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HomeMy WebLinkAboutORDINANCE BOOKS-1922-1923-1922-04-18 THRU 1923-09-121 RECOMMENDATION,ESTIMATE AND ORDINANCE. Recommendation by Board of local Improvements. To the Mayor and Aldermen of the City,of Evanston in the City Council Assembled: We'herewith submit an ordinance providing that the roadway of SIMPSON STREET in the City of Evanston, County of Cook, State of Illinois, from a point thirty-eight (38) feet west of the east lot line (produced south) of PIONEER ROAD to a point four hundred and eighty-one (481)'feet west of the west lot line (produced south) of PIONEER ROAD (to a width.of twenty-four (24) feet, including space to be occupied by curbing) also the roadways of all intersecting streets and alleys lying within said portion of said SIMPSON STREET and not included in the roadway thereof (to a width including space to be occupied by curbing of twenty-four (24) feet, for the roadway of PIONEER ROAD, fourteen (14) feet for the east roadway of HAWTHORNE LANE, fourteen (14) feet for the west roadway of HAWTHORNE LANE, and twenty (20) feet for the alley extending north from SIMPSON STREET through Block three (3), Common's and Best's Addition to Evanston) be improved by grading, curbing with a Portland cement concrete curb (having a vertical height of twenty-four'(24) inches and a width varying uniformly from six (6) inches at the top to eight (8) inches at the base thereof, said curb, where other than sandy soil is en- countered, to be placed on a base, six (6) inches in thickness, of sand or cinders). The concrete used in constructing said curb, to be composed by volume, of one (1) part of Portland cement, two (2) parts of clean, sharp sand, four (4) parts of crushed gravel or stone, mixed tivith sufficient clean water to give proper plasticity,' except that the top and exposed roadway faces of the curb are to be surfaced to a de th of one-half (J) inch with a mortar composed by volume of two (2� parts of Portland cemnet and three parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity, paving with a bituminous macadam pavement, consisting of a Portland cement concrete base five (5) inches in thickness, composed of Port- land cement, sand and gravel mixed by volume in ratio of 1:3:5 respectively,,with sufficient clean water to give proper plasticity, and a wearing surface three (3) inches in thickness, composed of broken limestone bound with two (2) applications of asphalt, liquified by heat, using therefor not less than two and one-half (2J) gallons of said asphalt for each and every square yard of finished pavement, the interstices between the stones used in the wearing surface to be filled with limestone screenings.or chips, said wearing surface to be finished with a coating of granite chips using therefor not less than one -hundred forty-fourth (1/144) of a cubic yard of said chips for each and every square yard of finished pavement, constructing neces- sary catch basins of hard burned sewer brick laid in a mortar composed by volume of one(1) part of Portland cement and one and one-half (w parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. Said catch basins to be placed (vertically) in the ground in such manner as to bring the tops of the iron covers here- in required for said ca;tchbasins, when in place to the upper surface of the proposed curbing. The walls of said catch basins to be eight (8) inches in thickness and to.have a vertical height of five and one- half (5J) feet, extending from the upper side of the plank floors to be provided for said catch basins, to the bottom of the cast iron cover3 to be provided for the basins, said basins to be cylindrical in form and to have an internal diameter of forty-two (42) inches, except that the internal diameter of the upper portion of said catch basins is to be regularly reduced to twenty-four (24) inches by means of eight (8) header courses of brick. Said catch basins to rest on a circular pine plank floor two(2) inches inthickness and to be equipped with a circular cast iron cover weighing not less than three hundred and thirty (330) pounds and having a vertical height of thirteen (13) inches. Said cover to be imbedded in mortar of the quality herein required for brick walls in catch basins. Said catch basins to be connected with the sewers now in place in said streets by means of vitri-fied, salt glazed, tile pipe having an internal diameter of nine (9) inches and of the type known as bell and spigot, the metal of which pipe to be thirteen -sixteenths (13/16) of an inch in thickness, the joints between said pipes to be sealed with a mortar of the kind and quality herein required for catch basins. Said connections to be made at the sewers by means of a the pipe "Y" branch, and at the catch basins,by means of a tile pipe elbow each of the internal 2 diameter, quality and thickness and laid in the manner herein re- quired for tile pipe used in connecting catch basins, also adjust- ing existing manholes by raising or lowering as the case inay re- quire the tops thereof to conform to the upper surface of the pro- posed improvement; together with an estimate of the cost of said improvement and recommendthe passage of said ordinance and the making of the improvement contemplated therein. Respectfully submitted, H. P. PEARSONS, WM. BLANCHARD, HAL W. SMITH, Board of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, Illinois. April 18,th, 1922. ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEPZNTS. To the Mayor and Aldermen of the City of Evanston in the City Council: The Board of Local Improvements of the City of Evanston having adopted a resolution that the roadway of SIMPSON STREET in the City of Evanston, County of Cook, State of Illinois, from a point thirty- eight (38) feet west of the east lot line (produced south) of PIONEER ROAD to a point four hundred and eighty-one (481) feet west of the west lot line (produced south) of PIONEER ROAD ( to a width of twenty- four (24) feet including space to be occupied by curbing) also the roadways of all intersecting streets and alleys lying within said portion of said SIMPSON STREET and not included in the roadway there- of( to a width including space to be occupied by curbing of twenty- four (24) feet,for the roadway of PIONEER ROAD, fourteen (14) feet for the east roadway of HAWTHORNE LANE, fourteen (14) feet for the west roadway of HAWTHORNE LANE, and twenty (20) feet for the alley extending north from SIMPSON STREET through Block three.(3), Common's and Best's Addition to Evanston) be improved by grading, curbing with a Portland cement concrete curb (having a vertical heighth of twenty- four (24) inches and a width varying uniformly from six (6) inches at the top to eight (8) inches at the base thereof, said curb, where other than sandy soil is encountered, to be placed on a base, six (6) inches in thickness, of sand or cinders). The concrete used in con- structing said curb, to be composed by volume of one (1) part of Port- land cement, two(2) parts of clean, sharp sand, four (4) parts of crushed gravel or stone, mixed with sufficient clean water to give proper plasticity, except that the top and exposed roadway faces of the curb are to be surfaced to a de th of one-half 4) inch with a mortar composed by volume of two (2y parts of Portland cement and three (3) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity, paving with a bituminous macadam pavement, con- sisting of a Portland cement concrete base five (5) inches in thickness, composed of Portland cement, sand and gravel mixed by volume in ratio of 1:3:5 respectively, with sufficient clean water to give proper plasticity, and a wearing surface three (3) inches in thickness, composed of broken limestone bound with two (2) applications of asphalt, liquified by heat, usi ng therefor not less than two and one-half (2-J) gallons of said asphalt for each and every square yard of finished pavement, the in- terstices between the stones used in the wearing surface to be filled with limestone screenings or chips, said wearing surface to be finished with a coating of granite chips using therefor not less than one one - hundred forty-fourth (1/144) of a cubic yard of said chips for each and every square yard of finished pavement, constructing necessary catch basins of hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement and one and one-half (11) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. Said catch basins to be placed (vertically) in the ground in such manner as to bring the tops of the iron covers herein required for said catch basins, whenin place to the upper surface of the proposed curbing. The walls of said catch basins to be eight (8) inches in thickness and to hhve a vertical heighth of five and one-half (6*) feet, extending from the -upper side of the plank floors to be provided for said catch basins, to the bottom of the cast iron covers to be provided for the basins, said basins to be cylindrical in form and to have an internal diameter of forty-two (42) inches, except that IZO][98 W the internal diameter of the upper portion of said catch basins is to be regularly reduced to twenty-four (24) inches by means of eight (8) header courses of brick. Said catch basins to rest on a circular pine plank floor two (2) inches in thickness and to be equipped with a circular cast iron cover weighing not less than three hundred and thirty (330) pounds and having a vertical heighth of thirteen (13) inches. Said cover to be imbedded in mortar of the quality herein required for brick walls in catch basins. Said catch basins to be connected with the sewers now in place in said streets by means of vitrified, salt glazed, the pipe having an in- ternal diameter of nine(9) inches and of the type known as bell and spigot, the metal of which pipe to be thirteen -sixteenths (13/16) of an inch in thickness, the joints between the said pipes to be sealed with a mortar of the kind and quality herein required for catch basins. Said connections to be made at the severs by means of a tile pipe "Y" branch, and at the catch basins by means of a tile pipe elbow each of the internal diameter, quality and thickness and laid in the manner herein required for the pipe used in connecting catch basins to sewers, also adjusting existing manholes by raising or lower- ing as the case may require the tops thereof to conform to the upper surface of the proposed improvement; and presented to the City of Evanston a recommendation that such improvement be made I hereby sub- mit an estimate of the cost of such improvement including labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment, as provided by law, viz: ESTIMATE OF COST. 720 cu. yds. of grading ® $1.50 per cu. yd............... $ 1,080.00 1350 lin. f t. of Portland cement concrete curb laid complete in place @$1.25 per lin, ft............ 1,687.50 1770 sq. yds. of concrete base for paving, laid complete in place © $1.80 per sq. yd................. 3,186.00 1770 sq. yds. of bituminous wearing surface for paving laid complete in place Q $1.40 per sq. yd..... 6. Brick catch basins, including cast iron covers plank floors and excavation complete in place @ $80.00 .each.. ... .. .. 85 line ft. of 9 inch internal diameter vitrified salt glazed tile pipe catch,basin connections average of depth of cut five (5) feet laid complete in place (including trenching and backfilling 01.00 per line ft.. .... . ... ..... 4 manholes adjusted and brought to.grade,@$10.00ea.... For lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment therefor not to exceed six per centum (6%) of the above, to -wit: 49,036.50......................... Total.................. 2,478.00 480.00 85.00 40.00 542.19 $ 9,578.69 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improve- ment and the lawful expenses attending the same. WM BLANCHARD. Engineer of the Board of Local Im- provements of the City of Evanston. Dated, Evanston, Illinois, .April 18th, 1922, N A N 0 R D I N A N C E. Providing that the the roadway of S DfPSON STREET in the City of Evanston, County of Cook, State.of Illinois, from a point thirty- eight (38) feet westof the east lot line (produced south) of PIONEER ROAD to a point, four hundred and eighty-one (481) feet west of the west lot line (produced south) of PIONEER ROAD (to a width of twenty-four (24) feet, including -space to be occupied by curbing) also the roadways of all intersecting streets and alleys lying within said portion of said SIMPSON STREET and not included in the roadway thereof (to a width including space to be occupied by curbing of twenty-four (24) feet, for the roadway of PIONEER ROAD, fourteen (14) feet for the east roadway of HAWTHORNE LANE, fourteen (14) feet for the west roadway of HA77THORNE LANE, and twenty420) feet for the alley extending north from SIMPSON STREET through Block three (3), Common's and Best's Addition to Evanston), be im roved by grading, curbing with a Portland cement concrete curb having a vertical heighth of twenty-four (24) inches and a width varying uniformly from six (6) inches at the top to eight (8) inches at the base thereof, said curb, where other than sandy soil is encountered, to be placed on a base, six (6) inches in thicknesse, of sand or cinders). The comerete used in construct- ing said curb, to be composed by volume, of one (1) part of Port- land cement, two (2) parts of clean, sharp sand, four(4�) parts of crushed gravel or stone, mixed with sufficient clean water to give proper plasticity, except that the top and exposed roadway faces of the curb are to be surfaced to a depth of one-half (J) inch with a mortar composed by volume of two(2) parts of Portland cement and three (3) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity, paving with a bituminous macadam pavement,.consisting of a.Portland cement, sand and gravel mixed by volume in ratio of 1:3:5 respectively, with sufficient clean water to.give.proper plasticity; and a wearing surface three (3) inches in thickness, composed of broken limestone bound with two-(2) applications.of asphalt liquified by heat, using therefor not less than two and one-half(2j) gallons of said asphalt for each and every square yard -of finished pavement, the intertices between the stones used in the wearing surface to be filled with limestone screenings or chips, said wearing surface to.be finished with a coating of granite chips using therefor not less then one One -hundred forty- fourth (1/144) of a cubic yard of said chips for each and every square yard of finished pavement,constructing necessary catch basins of hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement and one and one-half(li) parts of clean, sharp sand mixed with sufficient -clean -water to i�ve proper plasticity.., Said catch basins to be placed (vertically in the ground in such manner as to bring the tops of the iron covers here- in required for said catch basins, when in place to the upper surface of the proposed tubbing. The walls of the said catch basins to be eight (8).inches.in thickness and to have a vertical-heighth of five and one-half (5J) feet, extending from the upper side of the plank floors to be provided for.said catch basins, to the bottom of the cast iron covers to be provided for the basins, said basins to be cylindrical in form and to have an internal diameter of forty -tyro (42) inches, except that the internal diameter of the upper portion of said catch basins is to be regularly reduced to twenty-four (24) inches by means of eight (8) header courses of brick. Said catch basins to rest on a circular pine plank floor two(2) inches in thick- ness and to be equipped with a circular cast iron cover weighing not less than three hundred andthirty (330)pounds and having a vertical heighth of thirteen (13) inches. Said cover to be imbedded in mortar of the quality herein required for brick walls in catch basins. Said catch basins to be connected with the severs now in place in said streets by means of vitrified, salt glazed, tile pipe having an in- ternal diameter of nine (9) inches and ofthe type known as bell and spigot, the metal of which pipe to be thirteen -sixteenths (13/16) of an inch in thickness, the joints between said pipes to be sealed with a mortar of the kind and quality herein required for catch basins. Said connections to be made at the sewers by means of a tile pipe"Y" branch, and at the catch basins byt,means of a tile pipe elbow each of theinternal diameter, quality and thickness and laid in the manner herein required for tile pipe used in connecting catch basins to sewers, also adjusting existing manholes by raising or lowering as the case may require the tops thereof to conform to the upper surface of the proposed im provement. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvement shall be made within 110198 5 the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local improvement is as follows, to -wit: That the roadway of SIMPSON STREET in the City of Evanston, County of Cook, State of Illinois, from a point thirty-eight (38) feet ivest of the east lot line (produced south) of PIONEER ROAD to a point four hundred and eighty-one (481) feet viest of the rest lot line(produced south) of PIONEER ROAD (to a width of twenty-four (24) feet, including space to -be occupied by curbing) also.the roadways of all intersecting streets and alleys lying within said portion of said SIMPSON STREET and not included in the roadway thereof ( to a width including space to be occupied by curbing of twenty-four (24) feet, for the roadway of PIONEER ROAD, fourteen (14) feet for the ea t roadway of HAWTHORNE LADE, fourteen (14) feet for the west road- way of HAWTHORNE LANE, and twenty (20) feet for the alley extending north from SIMPSON STREET.through Block three (3), Common's and Best's Addition to Evanston „ be and the same is hereby ordered improved as follows: LOCATION OF ROADWAYS , . The center line of the roadways herein provided to be paved shall coincide with the center line of the respective streets and alleys within which said roadways are included. WIDTH OF ROADWAYS. The width of the roadways herein provided to be paved shall be as follows, measured in feet from back to back of the curb hereinafter specified and at right angles to the center line of the respective street or alley, as the case may be, to -wit: SIMPSON STREET At a point 38 feet west of the east lot line, produced south, of Pioneer Road 24 feet. At a point 481 feet vest of the west lot line, produced south, of Pioneer Road 24 feet. The Roadways of Hawthorne Lane. At the south curb line of Simpson Street 14 feet. At the south lot line of Simpson Street 14 feet. The alley extending north from Simpson Street through Block 3, Common:'s & Best's Addition to Evanston. At the north curb line of Simpson Street 20 feet. At the north lot line of Simpson Street 20 feet. THE WID`.CH OF ROADWAY AT INTERMEDIATE POINTS SHALL BE RESPECTIVELY PROPORTIONAL TO THE FOREGOING. GRADE OF ROADWAY AND CURB. The grade of the roadways herein provided to be paved, when finished, and the grade of the top of the curb hereinafter speci- fied, when completed and set in place, are hereby established as follows, measured in feet and decimal parts of a foot above the datum plane of the City of Evanston, to -wit: Transverse Section of Roadway. Crown Line. Gutter Line SIMPSON STREET. At a point 38 feet west of the east lot line, produced south, of Pioneer Road, At a point 481 feet west of the west lot line, produced south, of Pioneer Road The east roadway of HAWTHORITE LANE At the south curb line of Simpson Street At the south lot line of Simpson Street The west roadway of HAVJTHORNE LANE At the south curb line of Simpson Street At the south lot line of Simpson Street The alley extending north from Simpson Street through Block 3, Common's & Best's Addition to Evanston. 20.40 22.30 20.90 21.50 21.77 22.30 20.15 20.15 20.65 21.15 21.62 21.95 Top of Curb. 20.40 22.30 20.90 21.40 21.77 22.20 At the north curb line of Simpson Street 21.20 20.85 21.10 At the north lot line of Simpson Street 21,70 21.25 21.50 Pioneer Road At the north curb line of Simpson Street 20.40 20.15 20.40 At the north lot line of Simonson Street 20.60 20.35 20.60 (a) The grade of the crown line, gutter line and top of curb at intermediate points shall be respectively proportional to the foregoing. The datum plane hereinafter mentioned is the plane of low water mark of Lake Michigan in the year A. D., 1847, as established by the Trustees of the Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall,loca.ted at the north-west corner of Davis Street and Sherman Avenue, in said City of Evanston. The crown line hereinbefore mentioned shall be indentical with the center line of the respective roadways when completed. The gutter line hereinbefore mentioned shall be indentical with the line where the surface of the roadways when completed touches the face of the curbing on both sides of the respective roadways. The surface of the roadways herein provided to be paved when completed shall conform to the arc of a circle passing through the respective crown and gutter lines, and shall be true and sym- metrical. GRADING Prior to laying down the pavement thereon, the roadways spec- ified to be paved shall be cleaned in a thorough and workmanlike manner of all debris and rubbish, such as deteriorated pavements, crossings, box drains, culverts stumps, etc., The sub -grade shall be prepared by excavating the soil, or filling thereupon with other and suitable soil to such depths and shapes as will insure the finished pavement being at the grade established therefor. Spongy earth that is unfit to be left in the sub -grade shall be removed by the contractor without extra charge. • r . The sub -grade shall be rolled with a suitable roller or flooded with water, or both as may be found necessary and practicable to throughly compact same. Any depressions that may appear as the rolling or flooding of the sub -grade progresses shall be filled upon at the surface with suitable soil and throughly compacted as before specified. CATCH BASINS For the purpose of receiving storm waters from the surface of the roadway or roadways, as the case may be; herein provided to be paved six (6) catchbasins shall be constructed at the necessary points along the sides of the aforesaid roadway or roadways. Said catch basins shall be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catchbasins, when in place, to the upper surface of the proposed curbing. Said catch basins shall be•cylindrical in shape having an internal diameter of forty-two (42) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by means of eight (8) header courses of brick laid endwise and horizontally,to fit the iron covers hereinafter specified to be•furnished and set on walls of said catch basins. Said catch basins shall have wallas eight (8) inches thick, built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construc- tion of said catch basins shall be throughly wetted with water 1Z 19198 7 before being used and shall be laid in a mortar composed by volume of;one (1) part of Portland cement of the best quality and one and one-half (1f) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leaks e. Said catch basins shall each rest on a solid bottom of two (2� inch pinT2� lanks laid closely in side thickness and securely spiked to two pine stringers, or crQs;s; planks two (2) inches thick by six inches (6) inches wide. The laic bottom shall be made circular in form, and shall mea%ure sixty (60) inches in diameter and shall have its upper side placed five and and one-half (5J-) feet below the upper surface of the brick wall for said catch basiin. Said catch basin shall be connected with the sewer or sewers, as the case may be, now exist- ing or herein pr-ovided to be constructed, as the case may be, in and along the center line of the said roadway or roadways at the side of which the respective catch catch basins are to be constructed. Said catch basins shall be connected with the sewer, or sewers afore- said by means of vitrified, salt glazed, tile pipe having an inter- nal diameter of nine (9) inches and of the type known as "Bell and Spigot" the metal of which pipe shall be thirteen -sixteenths (13/16) of an inch in thickness and shall be not less than two (2) feet in length. Said pipe shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and.workman ship. All joints between the pipes shall be securely sealed with a mortar of the quality herein required for brick walls in catch basins. Each catch basin connection shall start in a nine (9) inch vitrified, salt glazed, tile pipe "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the sewer at a joint not less than six (6( feet in advance of the catch basin, measured along and in the downstream direction of the sewer from a point on said sewer directly opposite the catch basin. The pipes shall be laid true to line and grade and the connection shall enter the catch basin at a point two and one-half (2�) feet above the plank bottom. The pipe entering the catch basin through the brick walls thereof shall be an elbow with the bell end turned dowrraard inside the catch basin to form a trap. The pipe shall be laid in open trenches. The trenches shall be at least twelve (12) wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be back - filled as soon as practicable in order to occasion the least possible inconvenience to the public in'use of the street. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch basins shall each be equipped and fitted with a cast- iron cover weighing not less than three hundred thirty (330) pounds and having a vertical height of thirteen (13) inches, which cover shall be of the same size and pattern or equal. in size, quality and workmen -ship to the cast iron covers now in use on existing catch basins in Dempster Street between Ridhe Avenue and Dodge Avenue in said City of Evanston. Said catch basin covers herein provided to be furnished and set shall rest on the walls of the catch basins herein specified to be constructed. Said covers shall be imbedded in amortar of the quality herein required for brick'walls in said catch basins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the elevations hereinbefore specified for the top of the curb at the points where said catch basins are to be located. CONCRETE CURB. A con--rete curb shall be constructed on both side of the respective roadways herein provided to be paved. Said curb shall considt of a mixture by volume, of onepart of Portland cement, two parts of sand and four parts of crushed gravel or stone. Except that the top and exposed roadway face of the curb shall be surfaced to a depth of ohe-half inch with a mortar composed of two parts of Portland cement, and three parts of clean, sharp sand of the sizesand quality hereinafter specified for the sand to be used in making this curb. The crushed gravel or stone, specified for the body of the curb shall be clean, hard, free fc•om dust, loam, vegetable or other deleterious matter, and shall show sharp edged cubical fracturing; This crushed gravel or stone shall be of variable sizes, grading froma maximum dimension of one inch down to a minimum of one-fourth inch, and so proportioned that the particles capable of passing through a screen of three -fourths inch mesh will fill the voids in t_:e particles retained on such size screen, but without more than ten per cent excess ofthe smaller particles. 1`, The sand specified for the curb shall be free from clay, loam, vegetable or other deleterious matter. The grain shall be angular, and shall range in size from one -quarter inch down to the finest, but not more than three per cent shall pass through a sieve having (100) one hundred meshes per lineal inch. The sand shall be of such quality that mortar composed of one part of the cement hereinbefore specified and three parts of the sand, by weight, when made into briquette, will develop a tensile strength at least equal to the strength of a mortar of the same consistency and proportions made with the same cement and Standard Ottawa sand. The Portland cement specified for the curb shall be of such quality that representative samples collected from the shipments made for the job shall be capable of passing the tests for fine- ness, soundness, initial setting,'and tensile strength hereinaf-ter set forth for Portland cement. The sand and crushed gravel or stone shall be clean when de- livered on the job and shall be kept clean until used. In no case shall the sand and crushed gravel or stone, when used, contain frost or lumps of frozen matter. Forms shall be used in constructing the curb. The forias shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall Ve securely staked or other- wise held to the established lines and grades. Wooden forms shall be throughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have previously been used. The ingredients specified for the body of the curb shall be mixed in a batch machine mixer of a type that will insure a uniform mixture and product. Clean water, free from oil, acid alkali, or vegetable matter, shall be admitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the crushed gravel or stone from the mortar. Provided, that on such portions of the work as it may be impracticable to use the machine mixer,thorough and efficient hand mixing will be allowed. The equipment used, if any for hand mixing shall be as specified for mixing the surfacing mortar. The ingredients specified for the mortar to be used in surfacing the top and exposed roadway face of the curb shall be mixed on a movable, tight iron platform, of ample size to accomodate the ma- nipulations specified, e;ithout getting the ingredients off the plat- form or mixed i�-ith dirt. The Portland cement and sand specified for surfacing portions of the curb shall be thoroughly mixed on the platform with hoes or shovels, and until the color becomes uniform, after which sufficient water, of the quality hereinbeofre required, shallbe gently added, while the mixing continues, to produce a stiff and homogeneous mortar. The concrete and the finishing mortar after being prepared as specified shall be promptly deposited and compacted in the forms, in layers not exceeding six inches in depth. The back of the curb shall be worked with a spade to secure a well filled surface. The front uooer edge of the c urb shall be rounded to a radius of one and one- half inches in such manner that the planes of the top and roadway face of the curb will be tangent to the curve described by said radius. As soon as thc_ cement has sufficiently set, the forms shall be re- moved from the face of the curb; and the face mortar sha.l]. be promptly tZ19198 �9 troweled down hard and smooth, drawing the cement from the crushed gravel or stone as little as possible. The gloss shall be removed with a wet brush. The curb shall be constructed in sections not less than four feet not more than six feet in length. In constructing the curb, all templates used to form the sections shall be kept perpendicular to the top of the curb. All joints shall be neatly tool finished. The joint marking shall correspond to the joint made by the templates. The curb shall be twenty-four inches in depth, and the thickness shall vary uniformly from six inches at the top to eight inches at the Bottom ofth.e curb. The curb shall be built in such a manner that the roadway face will be vertical; that the back of the curb, at the top thereof shall be on the lines hereinbefore established. The curb at intersecting streets and alleys shall be constructed to true curves tangent to the intersecting curb lines proper. The radius of the curve to which the back of the curb shall conform shall conform shall be ter_ feet for intersecting street and alley curb lines, the curb shall be constructed paralleled to the center line of the respective roadways herein provided to be paved. The curb shall be constructed at such distances from the center line of the roadways, herein provided to be paved, as will give the respective width of road- ways hereinbefore specified and established, when measured from back to back of curb in the manner and on the lines hereinbefore set forth. Trenches shall -oe excavated to sufficient width and depth to receive the curb and necessary moulding frames. Wherever other than sandy soil is encountered the curb trenches shall be excavated to a depth of six inches below the bottom of the curb and shall be re -filled to such depth with sand or cinders. The sand or cinders shall be com- pacted with water or by hand tampers. The frames shall be securely fastened in place and shall be accurately brought to line and grade before they are filled with concrete. The grade and .line to which the frames are to be set shall be such as is necessary to insure the finish- ed curb being true to the lines and grades hereinbefore established therefor. MANHOLES TO BE ADJUSTED AND BROUGHT TO GRADE. The four(4) brick manholes now located within the space herein provided to be paved, and which are already equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said man- holes as may be necessary to bring the covers of the manholes to the height, above specified and also to insure a safe and serviceable roadway. In making said adjustme.nt, hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1-1 parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and qual- ity required for use in adjusting said walls. PORTLAND CE11ENT C ONCRE TE FOUNDATION. Upon the sub -grade prepared as hereinbefore specified, shall be constructed a Portland cement concrete foundation, five (5) inches thick. The concrete shall be composed by volume, of one (1) part of Portland cement; three13) parts of clean, hard grained, and sharp sand; and five (5) parts of clean, hard lime -stone or gravel broken or graded so as to yield a range of sizes (in longest dimension) from two(2) inches down to one-half (z) inch, and so proportioned as to produce a maximum number and minimum volume of interstices in the aggregate. The concrete shall be prepared by mixing the cement, sand and s stone or gravel in an approved batch mixer with sufficient clean water and nixing sufficiently to produce a plasticity best suited to the conditions of weather and soil. The concrete mixed as above specified, shall be promptly spread on the surface of the sub -grade to the required thickness; and to such shape and grade as will insure the upper surface of the foundation after being thoroughly compacted by rolling or tamping, being parallel with and three (3) inches below the grade hereinbefore specified for the finished roadway. The upper surface 'of the foundation shall not 10 be troweled smooth but shall be left moderately rough to grip the bituninous macadam pavement specified to be laid thereon. BITUMINOUS MACADAM PAYEKENT. Upon the foundation, prepared as hereinbefore specified, there shall be psread a layer of clean, hard, broken limestone ranging in size fromi a maximum dimension of two inches,to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of three (3) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon asthe stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone isfinished, and the layer thereof is dry, there shall be evenly applied to the lime- stone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to isnure not less than one and three quarters (IV gallons thereof being evenly spread on and used in each and every square yard of the roadway, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be iniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size ranging from the largest particle that would pass theough a sieve having circu- lar holes three -fourths in cif in diameter to the largest particle that vo uld pass through a sieve having circular holes one=fourth in ch in diameter. The limestone screenings shall be used in suf- ficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately fallowing the spread- ing of these limestone screenings the roadway so covered, shall be given a thorough rolling with a roller of the weight and type here- inbefore named.' This rolling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the roadway shall next be thoroughly cleaned of all loose stone, dirt le4ves or other foreign materiel thereon. After being so cleaned there shall be evenly applied to the surface of the pavement a second application of asphaltic cement of the same lind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread as to insure not less than three quarters (3/4) gallon thereof being evenly spread ans used'on each and every square yard of roadway. Immedaitely after the second application of asphaltic cement is made and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of the roadway. A final rolling of the roadway shall closely follow the spreading 'thereon of these granite chips. The final rolling shall be done with a roller of the weight and tupe hereinbefore named. The final rolling shall continue until the surface of the roadway is thoroughly compacted, and brought to a surface free from depressions and true to form and grade Any and all depressions developing during progress of the rolling, required in process of constructing the pavement herein pro- vided to be built, shall be filled, as the rolling continues, with the same respective kind of stone as tjat on which the roller is operating. The gutters shall be kept trimmed to the required thickness and grade as the work progresses. IZ19198 1t The cubic yardage of stone, herein required, shall be verified by measurement of volume thereof in cars, or other con- veyances, transporting same to said City, and prior to initial unloading, and shall be further verified by measured length of dumps and height of grade marks on the work. The stone shall be hauled on to the work boxes of uniform size and contents and of such shape as to enable an easy and exact determination of the volume contained therein to be made on the site. The asphaltic cement used in the improvement herein pro- vided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meet- ing the following requirements and of passing the following tests, to -wit: (1) The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural asphalt and a flux to be tested with and proven the best suited to the asphalt to be used; and $hall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pave- ments, and shall possess such chemical and physical properties and be so prepared for use as to best adapt it to the climatic. and traffic conditions of the roadway on which .it is to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit.. (3). It must have a penetration between 5 and 10 milli- meters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 grams for one minute. (4). It shall.be practically free from water, decompo- sition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be present in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindircal vessel two and one-half inches in diamtere, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as.above described. (7) It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95% . (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98*% shall be soluble in cold carbon tetrachloride. {9)•. The bitumen of the cement shall be soluble in 75 degrees Baume petroleum naptha, at the air temperature to the extent of not less than 72 per cent. (10).Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon• or• residue coke. MISCELLA11tOUS SPECIFICATIONS. BRIM All brick to be used in constructing catch basins and manholes and in adjusting catch basins, manholes and valve chambers for this improvement shall be. hard burner sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND. All sand to be used in the/improvement to be made shall be sharp and clean and shall vegetable or other deleterious matter nor more per cent, by weight, of clay. Said sand, when herein provided not contain than three (3) dry, shall pass a 12 sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve havin fifty ,(50) meshes per linear inch, and not more than five 15) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar.composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and propor- tion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL. All crushed lime stone or gravel to be used in the impr dve- ment herein provided to be made shall be tough, durable, gree from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTI AND CEMENT. The Portland cement to be used in the improvement herein provided to be made shall be of such quality that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and ten- sile strength, to -wit: Fineness. The cement shall be so ground that 92% will pass through a standard sieve, having 10,000 meshes and 75% will pass through a sieve having 40,000 meshes per square inch. foundness. A pat of neat cement, three an4 one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, protected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be imme diately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken bri quetts of the neat cement which have -remained in air one day and in water sic days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat cement. Age Strength 24 hours in moist air . 175 lbs. 7 days 1 day in moist air, 6 days in water) 500 lbs. 28 days day in moist air, 27 days in water) 600 lbs. One Part Cement, Three Parts Standard Ottawa Send Age Strength 7 days 1 day in moist air, 6 days in water) 200 lbs. 28 days day in moist air, 27 days in water) 275 lbs. The broquetts shall show no retrogression in strength within the period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required rests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker;* and shall be thoroughly protected against damage until used. $EWER PIPE. The tile pipe to be used in the improvement herein provided 1Zt9198 13 to be made shall be of the bell tupe. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly -Vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it within or without. Said pipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two- (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen-s+xteenths (13A6) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all the necessary labor shall be performed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board Of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston providing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of five hundred forty-two and 19AOO dollars ($542.19) being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collect- ing the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements", Approved June 14th, A.D.• 1897, and the amendments .thereto, and that 'said sum of five hundred forty-two and 19AOO dollars ($542.19) shall be. applied toward the cost of making, elvying and collecting such assess- ment. Section 4. That the aggregate amount herein ordered to be a asessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into ten (10) in- stallments in "he manner provided by:the statute in such case made and -provided, and each of said installments shall bear interest at the rate of six per centum per annum according to lawiuntil paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of five per centum per annum, payable annyally, and signed by the Mayor and by the Commissioner of Public Works, counter signed by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the provisions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improvements," approved June 14th, A.D. 1897, and the amendments theretp. Section 6.- That the Corporation Counsel be and he is hereby directed to file a petition in the,County Court of Cook County, Illinois, in=the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in,the manner prescribed by law. Section 7. That all ordinances or parts of ordinances con- flicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Coun4ll of the City of Evanston on the 18th day of April A.D. 1922. Approved: April 19, 1922. John F. Hahn, H.P. Pearsons,Mayor. City Clerk 14 10 IT ORDAINED BY THE CITY COUNCIL OF THE CITY DF EVANSTON. SECTION 1. It shali be unlawful for any corporation owning or operating any steam, elevated, electric, street or other railway in any part of the City of Evanston, to lay, cause or permit to be laid in, along or across any of the streets, alleys or public grounds of said,City, any track, siding, side track, switch or switch track or in any manner to obstruct, cause or permit to be obstructed, any of the streets, alleys or public grounds of said City, or any part thereof, without the permission of the City Council of said City being first thereto duly had and obtained, and the Com- missioner of Public Works of said City shall be and he is hereby authorized to immediately remove such tracks, sidings,_ side tracks, switches, switch tracks, or other obstructions as may be so laid, placed, erected or constructed in, along or across any of the streets, alleys or public grounds of said City in violation of this section, and for such prupose he is also hereby authorized to call to his assistance the police of said city. SECTION 2. Any corporation owning or operating any steam, elevated, electric, street or other railway which -by itself, -its agents or employees shall violate or cause or permit to be violated, or shall fail to observe any of the provisions of this ordinance, or any agent or employee �of such corporation who shall violate or cause Dr permit to be violated, or fail to observe the same, shall be fined in a sum of not less than One Hundred Dollars nor more than Two Hundred Dollars for each offense, and it shall be deemed a separate offense for each day any such track, siding, side track, switch, switvh track or other obstruction is kept or maintained in, along or across any of the streets, alleys or public grounds of the City of Evanston-, without such permission of said City Council. SECTION 3. Section 2348 of Chapter XLVI of the Evanston Code of 1915 adopted by the City Council of the City of Evanston March 26th, 1915, and all ordinances or parts of ordinances in conflict with any of the provisions of this ordinance, are hereby repealed. _- SECTION 4. This ordinance shall be in full force and effect from-and*after its passage, approval and publication,, according to Adopted' by the City Council of the City of ti Evanston on the,18th day of April A.D. 1922. Approved: April 19, 1922. John F. Hahn, H.P. Pearsons, City Clerk. Mayor. Published in News -Index . April 20, 1922. AN ORDINANCE TO ESTABLISH OFFICIAL TIME IN THE CITY OF EVAN ST ON DURING A PART OF THE YEAR 1922 AND TO ACC CMPLI SH DAYLIGHT SAVING THEREBY9 BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: -SECTION 1. Central standard time,shall hereafter be the official time within the City of Evanston for the transaction of all city business; except that from and after 2:00 A.g. on the last Sunday in April in the year 1922, official time for the City of Evanston shall be and,remain advanced one hour until 2:00 A.M. on the last,Sunday in September in the year 1922, when such official time shall cease, and by the deduction of one hour therefrom, be returned to Central standard time; and all legal or official proceedings of the City Council and all official business of the City shall be regulated thereby, and when, by ordinance, resolution or action of any municipal officer or body, an act must be performed at or within a prescribed time, it shall be so performed according to such official time. SECTION 2. All clocks or other timepieces in,or upon public buildings or other premises maintained at the expense of the City of Evanston, shall be set and run according to the official time as pro- vided in Section 1 hereof, and it is hereby made the duty of the officer or other person having control and charge of such building or 1119198 buildings and premises, to see that the said clocks or other 15 timepieces are set and run in accordance with the official time as provided by this ordinance. SECTION 3. All persons residing within the City, and all persons, firms or corporations doing business within the City are hereby requested to set and run any and all clocks or other timepieces under their control within the City in accordance with the official time as provided by Section 1 of this ordinance. SECTION 4. This ordinance,shall be in force and effect from and after its passage and approval.• Adopted by the City Council of the City of Evanston on the 18th day of April A.D. 1922. Approved April 19, 1922. John F. Hahn, H.P. Pearsons, City Clerk. Mayor. BE IT ORDAINED BY THE CITY COUNCIL OF,THE CIT`v OF EVANSTON: SECTION 1. That that part of the North and South alley lying between lots 80 and 89, and between the North 4.1.5 feet of lots 79 and 90 and that part of Park Street between the East line of Central Park Avenue and the West line of Hurd Avenue, in the City of Evanston, County of Cook and State of Illinois, as dedi- cated by plat of WESTERLAWN, a sub -division of lots 9,10,11, and 12, in the County Clerk's Division of Fractional Section 33 in Township 42 North, Range113, East of the Third Principal Meridian, it Cook County, Il-.inois-, said plat having been filed for record December 17th, -1915,,in the office -of the Recorder of Deeds of Cook County, Illinois, and entered in Book 140 of plats, Page 37, as Document 5772065, be and the same are hereby vacated, as the same have never been used by the public or adjacent property owners, and as the same are no longer required for public use, and the interests of the City of Evanston will be subserved by such vacation. SECTION 2. The vacation herein provided for is made in consideration of the dedication by the Trustees of Schools of Township 41 North, Range 14, East of the Third Principal Meridian, to the City of Evanston for the use of the public for street and highway purposes, of the North 41.5 feet of -lots 79 and-90, and the South 24.5 feet of lots 80 and 89, together with that portion of said vacated alley lying between said parts of lots 79,80,89 and 90, all in said WE STERLAW. 'SECTION 3. The plat hereto attached, showing in red coloring, and indicating by the words "Hereby Vacated", the property vacated, dnd alto showing=in yellow coloring, and indi- cating by the words "Dedicated for a Street", the property dedi- cated, is hereby approved and made a part of this ordinance, and the City Clerk is hereby directed to certify the same as such. SECTION 4. This ordinance shall be in full force and effect from and after its passage and approval and the filing in the office of the Recorder of Deeds of Cook -County, Illinois, of a certified copy of this ordinance, to which is attached a plat showing property vacated and dedicated. Adopted by the City Council of the City of Evanston on the 18th day of April A.D. 1922. f Approved: April 19, 1922. H.P. Pearsons, Mayor, 0 John F. Hahn, City Clerk. 16 AN ORDINANCE ` Amending an ordinance entitled "An Ordinance to classify, regulate and restrict the locations of trades and industries and the location of buildings designed for specified uses and to regulate and limit the height and bulk of buildings hereafter erected, to regulate and limit the intensity of the use of lot areas and to regulate and determine the area of yards, courts and other open spaces within and surrounding such buildings, and to establish the boundaries of districts for the said purposes and prescribing penalties for the violation of its provisions", adopted by the City.Council of the City of Evanston, January 18,.1921, by classifying*on the "Height Map" of said ordinance adopted January 18, 1921, as a 45 foot Height District instead of a 35 foot Height District, certain described property and prescribing penalties for a violation of its provisions. BE IT ORDAINED'BY THE CITY COUNCIL OF THE CITY OF EVANSTON, ILLINOIS: SECTION 1. That* the otdin ance entitled "An ordinance to classify, regulate and restrict the locations of trades and industries and the location of buildings designed for specified uses and to regulate and limit the height and bulk of buildings hereafter erected, to regulate and limit the intensity of the use of lot areas and to regulate and determine the area of yards, courts and other open spaces within and surrounding such buildings, and to establish the boundaries of districts for the said purposes and prescribing penalties for the violation of its provisions," adopted by the City Council of the City of Evanston January 18, 1921, be and the same hereby is amended as hereinbefore set forth. SECTION 2. That the district described as lots one (1) and two, (2) in Block 9 North Evanston in Section 12, Township 41 North Range thirteen (13) East of the Third Principal Meridian in the City of Evanston, Cook County, Illinois, otherwise known by street and house numbers as numbers 1800,1802,1804.01806, 1808, 18iO, 1812,1814 Central Street and 2537,2539,2541,2543,2545,2547,'2549 East Railroad Avenue, and classified on the "Height Map", 'said map being a part of said ordinance adopted January 18, 1921, as a 35 footheight district, be and the said district is hereby changed to a 45 foot height district. SECTION 3. The penalties provided for in the said ordinance adopted anuary 18, 1921 for a violation of any of its regulations and restrictions applicable to similarly situated 45 foot height districts, shall be applicable to said ordinance as herein amended. SECTION 4. All ordinances or parts of ordinances in con- flict with any of the provisions of this ordinance are hereby repealed. SECTION 5.� This ordinance shall be in effect from and after its passage, approval and publication according to law. Adopted by the City Council of the City of Evanston on the 2nd day of May A.D. 1922, Approved: May 24th, 1922. John'F. Hahn, H.P. Pearsons, City Clerk. Mayor. Pubiished in News Index May 24, 1922. AN ORDINANCE Amending an ordinance entitled "An ordinance to classify, regulate and restrict the location of trades and industries and the location of buildings designed for specified uses and to regulate and limit the height and bulk of buildings hereafter erected, to regulate and limit the intensity of the use of lot areas and to regulate and determine the area of yards, courts and other open spaces within and surrounding suph buildings, and.to establish the boundaries of districts for the said purposes.andprescribing penalties for the violation of its provisions", adopted by the City Council of the City of Evanston, January 18, 1921, by classifying on the "Use Map" and on the "Area Map" of said ordinance adopted January 18, 1921 as an "A" Residence District and as an "A" Area District respectively, instead of a "B" Residence and a "B" Area District respectively, certain described property and prescribing penalties for a violation of its provisions. IZ0108 17 BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON, ILLINOIS: SECTION 1. That the ordinance entitled "An ordinance to classify, regulate and restrict the locations bf trades and industries and the location of buildings designed` for specified uses and to regulate and limit the height and bulk of buildings hereafter erected, to regulate and limit the intensity of the use of lot areas and to regulate and determine the area of yards, courts and other open spaces within and surrounding such buildings and to establish the boundaries of such` districts for the said purposes and prescribing penalties for the violation of its provisions," adopted by the City Council of the City of Evanston, January 18, 1921, be and the same hereby is amended as hereinafter set forth. SECTION 2. That the district bounded on the North by Dempster Street on the East by the North and South alley between Maple Avenue and Elmwood Avenue, on the South by Crain Street, and on the West by the North and South alley between Maple Avenue and 'Oak Street, otherwise described as Lots 13,14,15,15,17.18,19,20, 21,22.23 and 24, Block Two (2) in 0. Huses' Addition to Evanston, all in the Northwest quarter of Section nineteen (19) Township forty-one "(41) North, Range fourteen (14) in the City of Evanston, Cook County, Illinois;- and as Lots 1,2,3,4,5,6,7,8,9,10 and 11, Block one (11) in D. A. Crain t s Sub-Aivi si on', all in the Northwest quarter bf Section nineteen (19), Town'ship Forty-one (41) North, Range fourteen (14)0 in the City of Evanston, Cook County, Illinois; and further described by street numbers as numbers - 1201 to 1241� Maple Avenue, both inclusive and 1200 to 1246 Maple Avenue, both inclusive; and classified on the "Use Map" and on the "Area Map", said maps being a part of said ordinance adopted January 18, 1921, as a "B" Residence District and as a "B" Area District respectibe, be and the said district hereby is changed to an "A" Residence District and an "A" Area District respectively. SECTION 3. The penalties provided in said ordinance adopted January'18, 1921, for a violation of any of its regulations and restrictions applicable to "A" Residence Districts and "A" Area Districts shall be applicable to said ordinance ag herein amended. 'SECTION 4. All ordinances or parts of ordinances in conflict with any of the provisions of this ordinance are hereby repealed. ' SECTION 5. This ordinance shall be in effect from and after its passage, approval and publication according to law. Adopted by the City Council of the City of Evanston on the 6th day of June A.D. 1922. Approved: June 8, 1922. John F. Hahn, H.P. Pearsons, City Clerk. Mayor. Published in News Index_ June 10, 1922, BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY 'OF EVANSTON: SECTION 1. Ih addition to the dutiefs prescribed in Sections 8,9 and 10 of Chapter II of the Evanston Code of 1915, the City Clerk shall act as Town Clerk of the T'own of the City of Evanston. ' The duties required by law to be performed by the Town Clerk, shall be performed by the City Clerk. The'office of the Town Clerk of the Town of the City of Evanston, end the office of City Clerk of the City of Evanston are hereby united in the same person. The City Clerk shall be the custodian and keeper of all the books, records, ordinances and papers of the City 'of Evanston, together with all of the books, records, ordinances and papers of the Town of the City of Evanston, and the compensation allowed to the City Clerk shall be in full of -his compensation for such duties as may be performed by him in his capacity as 1 8 Town Clerk of the Town of the City of Evanston. SECTION 2. In addition to the duties herein prescribed in Sections 53 to 63, both inclusive, of Article III of Chapter VI of the Evanston Code of 3.915, the City Treasurer shall act,as Town Collector of the Town of the City of Evanston. All duties re- quired by law to be performed by the Town Collector shall be per- formed by the City Treasurer. The office of Town Collector of the Town of the City of Evanston, and the City Treasurer of the City of Evanston are hereby united in the same person. The compen- sation of the City Treasurer shall be such amount as shall be fixed by the Annual Appropriation Ordinance and his compensation as Town Collector shall be'such amount`as shall be allowed by law. t SECTION 3. Section II of Chapter II of the Evan st on Code of 1915 is hereby repealed. SECTION 4. This ordinance shall be in full force and effect from and after its passage and approval according to law. Adopted by the City Council of the City of Evanston on the 6th day of June A.D. 1922, Approved: June 8, 1922., John F. Hahn', ` H.P. Pearsons, City Clerk. ` Mayor AN ORDINANCE Amending an ordinance entitled "An ordinance to classify, regulate and restrict the location of trades and industries and the location of buildings designed for specified uses and to regulate and limit the height' and bulk of buildings hereafter erected, to regulate and limit the intensity of the use of lot areas and to regulate and determine the area of yards, courts and other open spaces within and surrounding such buildings, and to establish the boundaries of districts for the said purposes and prescribing penalties for the violation of its provisions," adopted by the City Council of the City of Evanston. January 18th, 1921, by classifying on the "Use Map" and on the "Area Map" of said ordinance adopted Jnauary 18th, 1921, as a "C" Use District and as a "C" Area District, respectively, certain described property and prescribing penalties for a violation of its provisions. HE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON, ILLINOIS: SECTION 1. That the ordinance entitled "An ordinance to classify, regulate and restrict the locations of trades and industries and the location of buildings designed for specified uses and to regulate and limit the height and bulk of buildings hereafter erected, to regulate and limit the intensity of the use of lot areas and to regulate and determine the area of yards, courts and other open spaces within and surrounding such buildings and to establish the boundaries of districts for the said purposes and prescribing penalties for the violation of its provisions," adopted by the City Council 'of the City of Evanston, January 18th, 1921, be and the same hereby is amended as hereinafter set forth. SECTION 2. That the district described as lots 1 to 6, both inclusive, lots 11 to 15, both inclusive, and lots 16 to 20, both in- clusive, in Evanston Golf Subdivision West, a subdivision of that part of lot 34 in Baxter' s Subdivision, and that part of lot 20 in George Smith's Subdivision, lying West of the westerly line of -the right of way of the Chicago, Milwaukee and St. Paul Railway Co. in Ouilmette Reservation, in Township 42, North, Range 13, East of the Third Principal Meridian, in the City of Evanston, Cook County, Illinois, and classified on the "Use Map" and on the "Area Map", said maps being a part of said ordinance adopted January 18th, 1921, as an "A" Use District and as an "A" Area District, respectively,' be and the said district is hereby changed to a "C" Use District and to a "C" Area District, respectively. SECTION 3. The penalties provided for in the said ordinance adopted January 18th, 1921 for the violation of any of its regulations and restrictions applicable to similarly situated "C" Use Districts and "C" Area Districts shall be applicable to said ordinance as herein amended. 1Zt9i98 SECTION 4. All ordinances or parts of ordinances in �9 conflict with any of the provisions of this ordinance are hereby 7 repealed. SECTION 5. This ordinance shall be in: effect from and after its passage, approval and publication according to law. Adopted by the City Council of the City of / Evanston on the 6th day of June A.D. 1922. Approved: June 8, 1922. John F. Hahn, H.P. Pearsons, City Clerk. Mayor Published in News Index June 10, 1922, RECOMMENDATION , ESTIMATE AND ORDINANCE. RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanst cn in the City Council Assembled: We herewith submit an ordinance providing that the Public Alley extending from the north line of Lee Street to the south line of Greenleaf Street, in Block one (1), in the Resubdi- vision of Blocks 1 and 2 White's Addition to Evanston in the northeast one -quarter (-� of Section nineteen (19), Township forty-one (41) North, Range fourteen (14) East of the Third Prin- cipal Meridian, in the -City of Evanston, County of Cook, State of Illinois, be improved by grading, paving t,c a width of nineteen (19) feet with a Portland cement concrete pavement, six (6) inches in thickness, composed of Portland cement, clean sharp sand, and gravel miced by volume in ratio of 1:2:3 respectively, with suf- ficient clean water to give proper plasticity, using a prepared strip, one-half (*) inch in thickness and six (6) inches in width of bituminous filler for expansion joints in paving, constructing necessary catch basins of hard burned sewer brick, laid in a mortar composed by volume of one (1) part of Portland cement and one and one-half (*) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. Said catch basins to be placed vertically in the ground in such manner that the tops of the iron covers herein required to be placed thereon, whem set in place will be at the heighth of the upper surface of the proposed improvement. The walls of said catch basins to be eight (8) inches in thickness and to have a vertical heighth of four (4) feet. Said catch basins to be cylindrical in form and to have an internal diameter of thirty-six (36) inches, except, the diameter of the upper portion of said basins is to be regularly decreased to twenty-four (24) inches by means of three (3) header courses of brick. Said catch basins to rest upon a circular pine plank floor two (2) inches in thickness and to be equipped with a circular cast iron cover weighing not less than -three hundred sicty (360) pounds and haying a vertical heighth ofnine (9) inches, said cover to rest on top of the walls of said catch basins and to be imbedded in mortar of the kind and quality required for catch basins. Said catch -basins to,be connected with the, sewer now in p],ace in said alley by means of vitrified salt glazed, tile pipe having an internal diameter -of six (6) -inches. and of the tupe known as bell and spigot, the metal of which pipe shall have a thickness of three -fourths (3/4) of an inch, the joints between said pipes to • be sealed -with a mortar of the kind.and.quality required for catch basins. Said connections to be Ypade at the sewers by means of a tile pipe "Y" branch, and at the catch basins by means of a tile pipe elbow each of the internal diameter, quality and thick- ness and laid in the manner herein required for tile pipe used in connecting catch basins to sewers, also adjusting, existing man- holes' by raising or lowering as the case may require, the covers thereof to conform to the upper surface of the proposed improve- ment; together with an estimate of the cost of said improvement and recommend the passage of said ordinance and the making of the impr ovement contemplated herein. Respectfully submitted, H.P. PEARSONS, WM. BLANC HARD , HAL W. SMITH. Dated Evanston, Illinois, Board of Local Impr ovement s of June 6th, 1922, the City of Evanston, Illinois. 20 ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEMENTS: TO the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the' -City of Evanston having adopted a resolution that the Public Alley extending from the north -line of LEE STREET to the south line of GREENLEAF STREET, in Block one (1) in the Resubdivision of Blocks 1 and 2 White's Addition to Evanston, is the northeast one -quarter (4) of section nineteen (19). Township forty-one .(41) North, Range fourteen (14) East of the Third Principal Meridian, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving to a width of nineteen (19) feet with a Portland cement concrete pavement six (6) inches in thickness, composed of Portland cement,`clean sharp sand, and gravel mixed by volume.in ratio of.1:2:3 respectively, with sufficient clean ster to give proper plasticity, using a prepared strip, one-half (*) inch in thickness and six (6) inches in width of bituminous filler .for expansion joints in ,paving, constructing necessary catch basins of hard burned sewer brick, laid in a mortar composed by volume of one (1) part of Portland cement and one and one-half (1-1) parts of clean sharp sand, mixed with sufficient clean water to give proper plasticity. Said catch basins to be placed vertically in the ground in such manner that the tops of the iron covers herein required to be placed thereon, when set in place will be at the heighth of the upper surface of the proposed improvement. The walls of said catch basins to be eight (8) inches in thickness and to have a vertical heighth of four (4) feet. Said catch basins to be cylindrical in form and to have an,internal diameter of thirty- six (36) inches, except, the diameter of the upper ortion of said basins is to be regularly decreased to twenty-four M) inches by means of three (3) header courses of brick. Said catch basins to rest upon a circular pine plank floor two (2) inches in thickness and to be equipped with,a circular cast iron cover weighing not less than three hundred sixty (360) pounds and having a vertical heighth of nine (9) inches,,said cover to rest on top of the walls of said catch basins and to be imbedded in mortar of the kind and quality required for catch basins. Said catch basins to be connected with the sewer now in plane in said alley by means of vitrified, salt glazed, tile pipe having an internal diameter of six (6) inches and of the type known as bell and spigot, the metal of which pipe shall have a thick- ness of three -fourths (3/4) of an inch, the joints between said pipes to be sealed with a mortar of the.kind and quality required for catch basins. Said connections to be made at the sewers by means of a tile pipe "Y" branch, and at the catch basins by means of a tile pipe elbow each of the internal diameter, quality and thickness and laid in the manner herein required for tile pipe used in connecting catch basins to sewers, also adjusting existing manholes by raising or lowering as the case may require, the covers thereof to conform to the upper surface of the proposed improvement; and presented to the City Council of the City of Evanston a recommendation that such improvement be made I hereby submi.t an estimate of the cost of such improvement including labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment,. as provided by law, viz: ESTIMATE OF COST 513 cu.yds. of grading ® $1.60 per cu- yd. 1500 sq.yds. of concrete paving complete in place ® $2.75 per sq. yd. 2 brick catch basins including cast iron covers, plank floors and excavation, complete in place Eli 380 2 For 4 820.80 - 4125,00 - ® 970.00 each . . . . . . . . . . . . . . . . lin. ft. of tile pipe catch basin connections (average depth of cut five (5) feet including trenching and back filling),complete in place ® $1.00 per lin. ft. . lin. ft. of bituminous filler strips for expansion joints in paving, laid complete in place ® 10,e per lin. ft. . . manholes adjusted and brought to grade ® $10.00 each . . lawful ecpenses attending the proceedings for making said 140.00 25.00 38.00 . 20.00 improvement and the cost of making and collecting the . assessment therefor, not to exceed six per centu* (6%)' of the above, to -wit:, $516$.80 . . . . . . . . - . . 310.12 Total . . . . . . . $ 5478.92 1Z19198 2T . And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improvement and the lawful expenses attending the same. WM. ' BLANC HARD. Engineer of the Bayard of Local Im- provements of the City of Evanston. Dated Evanston, Illinois June 6th, 1922. AN CRDINANCE Providing that the P+sblic Alley extending from the north line of LEE STREET to the south line of GRPENLEAF STREET, in Block one (1) in the Resubdivision of Blocks 1 and2 'White's Addition to Evanston in the northeast one -quarter (-�: of -Section nineteen (19), Township forty-one (41) North, Range fourteen (14) East of the Third Principal Meridian, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving to a width of nineteen (19) feet with a Portland cement concrete pavement, six (6) inches in thickness, composed of Portland cement, clean sharp sand, and gravel mixed by volume in ratio of 1:2:3 respectively, with sufficient clean water to give proper plasticity, using a prepared strip, one-half () inch in thickness and six (6) inches in width of bituminous filler for expansion joints in paving, con- structing necessary catch basins of hard burned sewer brick, laid in a mortar composed by volume of one (1) part of Portland cement and one and one-hal-f (l*) parts of clean sharp sand, mixed with suffi- cient clean water to give proper plasticity. Said catch basins to be placed vertically in the ground in such manner that the tops of the iron covers herein required to be placed thereon, when set in place will be at, the heighth �of the upper surface of the proposed improvement. The walla of said catch basins to be eight 8 inches in thickness and to have a vertical heighth of four �4J feet. Said catch basins to be cylindrical in form and to have an internal diameter of thirty-six (36) inches, except, the diameter of the upper portion of said basins is to be regularly decreased to twenty- four (24) inches by means of three (3) header courses of brick. Said catch basins to rest upon a circular pine plank floor two (2) inches in thickness and to be equipped with a circular cast iron cover weighing not mess than three hundred sixty (360) pounds and having a vertical heighth of nine (9) inches, said cover to rest on top of the walls of -said catch basins and to be imbedded in mortar of the kind and quality required for catch basins. Said catch basins to be connected with the server now in place in said alley by means of vitrified salt glazed, tile pipe having an internal diameter of six (61 inches and of the type known as bell and spigot, the metal of which pipe shall have a thickness of three -fourths (3/4) of an inch, the joints between said pipes to be sealed with amortar of the kind and quality required for catch basins. Said connections to be made at the sewers by means of a tile pipe "Y" branch, and at the catch.basins by means of a tile pipe elbow each of the internal.diameter, quality and thickness and laid in the manner herein required for tile pipe used in connecting catch basins to sewers, also adjusting existing manholes by raising or lowering as the case may require, the covers thereof to conform to the upper surface of the proposed improvement. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvement shall be made within the City of Evanstcn, County of Cook, State of Illinois, the nature, character, locality and description of which local improvement is as follows, to -wit: That the Public Alley extending from the north line of Lee Street to the south line of Greenleaf Street, in Block one (1) in the Resubdivision of Blocks 1 and 2', Whit Ay Addition to Evanston in the northeast one -quarter (J) of Section nineteen (19) Township forty-one (41) North, Range fourteen (14) East of the Third Prin- cipal Meredian, in the City of Evanston, County of Cook, State of Illinois, be and the same is hereby ordered improved as follows: 22 LOCATION OF PAVEMENT The center line of the pavement herein provided to be con- structed shall coincide with the center line of the alley within which said pavement is included. WIDTH OF PAVETAE NT The width of the pavement herein provided, to be constructed shall be nineteen (19) feet. I < GRAZE OF PAVEMENT The grade of the .upper surface of the finished pavement herein provided t�o be constructed is hereby established as follows, measured in feet and decimal parts of a foot above the datum of the City of Evanston, to -wit: Transverse Section of Alley Outer Edges Center line of Pavement of Pavement At the north line of Lee Street 23.00 22.75 At, one hundred and thirty (13) feet north of Lee Street 23.85 23.60 At two hundred and thirty (2.30) feet north of,Lee Street 23,20 22.95 At two,hundred and ninety(290) feet south of Greenleaf Street 24.50 24.25 At two hundred (200) feet south of Greenleaf Street 23.85 23.60 At one hundred and seventeen (117) feet south of Greenleaf Street 24.40 24.15 At the south line of Greenleaf Street 23.50 23.25 The grade of the center line and outer edges of the pavement at intermediate points shall be respectively proportional to the fore- going, t < The datum plane hereinbefore mentiones is the plane of the low water mark of Lake Michigan in the year A.D. 1847, as established by the Trustees of Illinois and Michigan Canal and is 22.41 feet below the U.S. Geological Survey Be"nah Mark on the north side of the Sherman Ave nue entrance to the building known as City Hall, located at the northwest corner of Davis Street and Sherman Avenue, in said City of Evanston. . The upper surface of th9 pavement herein provided to be constructed, when completed, shall conform to the are of a circle passing through the respectibe grade points in the center line and at the outer edges of the pavement, and shall be true and symmetrical. Grading, The alley herein provided to be improved shall be -cleaned prior to the paving thereof, in a thorough manner of all deteriorated planking, blocking or other debris. The soil of the roadway shall then be excavated or filled upon with other suitable soil, as the case may be, to such depth and shape as will bring the upper surface of the finished pavement, when constructed as hereinafter specified to the elevations - and grades hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable self-propelling roller or flooding with water as the case may require. Depressions or holes appearing as the preparation of the sub -grade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left in the sub -grade, shall be removed by the contractor without extra charge. CONCRETE PAVEMENT Upon the subgrade,• when prepared as hereinbefore specified shall be constructed a concrete pavement, composed of Portland cement, sand and gravel mixed by volume in ratios of one part of cement, two parts sand, and three parts of gravel with sufficient clean water to give proper plasticity and in the manner hereinafter set forth. The concrete shall be spread on the sub -grade in such quantity and to such form that after being compacted in place it shall have a uniform thickness of stx inches. 1119198 The Portland cement to be used in making this concrete 23 pavement shall be of. such quality that representative samples collected from shipments made for the job shall be capable of passing the following tests, for fineness, soundness, initial setting, and tensile strength, to -wit: FINENESS. The cement shall be ground so that 92 % will pass through a standard sieve, having 10,000 meshes and 75% will pass through a sieve having 40,000 meshes per square inch. SOUNDNESS. A pat of neat cement, three and one-ha4.f inches in diameter, one half inch in thickness at the center and tapered t a a feather edge at the circumference, made on glass, shall remain in the air, protected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immeadiately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquette of this neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified for the neat pat. SETTING. The cement when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours.. TENSILE STRENGTH. Briquets one square inch in cross sec- tion made of the cement shall show tensile strength not less than as follows: Age 24 hours in moist air . 7 days (1 day in moist 28 days kl day in moist One part cement, 7 days 1 day in moist 28 days 1 day in moist Neat Cement Strength . 175 lbs. air, 6 days in water) 500 lbs. air, 27 days in water) 600 lbs: three parts Standard Ottawa sand. air, 6 days in water) 200 lbs. air, 27 days in water) 275 lbs. Tide briquette shall show no retrogression in strength within the period specified. The sand to be used for making the concrete shall be free from dust, clay, loam, vegetable or other deleterious matter. After the rolling has been completed the pavement shall be finished by two (2) applications of a belt made of canvas, not less than six (6) inches wide and not less than two (2) feet longer than the width of the pavement. For the first application, vigorous strokes at least twelve (12) inches long shall be used. The longitudinal movement of the belt along the pavement shall be very slight. The second application of the belt shall be immediately after the water glaze or sheen disappears, and the stroke of the belt shall be not more than four (4) inches, and the longitudinal movement shall bebontinuous for.,ward movement. A suitable bridge to span the width of the pavement shall be used to finish the joints, no part of which shall be in contact with the finished work. A notched straight edge ten (10) feet in length shall be used for testing each transverse "joint, prior to and subsequent to final finishing. The straight edge shall be placed over the joint, para- llel to the center line of the pavement and moved across from curb to curb. When the surface of the concrete upon testing shows to be high or low, concrete will be added or removed to bring the surface its true shape; The concrete adjoining transverse joints shall be dense in character and after rolling shall be finished with a wood float, which is divided through the center and which will permit finishing on both sides of the filler at the same time. 2 4• The finished surface of the concrete shall not vary more than one -eighth (1/8) of an inch from a two foot straight edge placed upon the concrete in any position. Workmen shall not walk on the freshly laid concrete; and no one shall be allowed ;on the concrete after it has been worked 'into form and position with a template or straight edge, until it has thoroughly hardened. EXPANSION JOINTS Transverse expansion joints not less than three-wighthe (3/8) inch or more than one-half (*) inch in wi,sth shall be placed across the pavement at right angle to the center line of the road- way; spaced so as not to exceed thirty-three and one-third (33 1/3) feet apart. All expansion joints shall extend through the entire thickness of the pavement. In these expansion joints there shall be placed a prepared strip of bituminous filler of the thickness hereinbefore specified for expansion joints and extending from the bottom of the pavement herein specified to the upper surface of the finished pavement. The upper edges of all joints and the upper outer edges of the pavement shall be neatly trowled to a radius of one -quarter (-k) inch. V The grains of sand .shall be angular and shall range in sixe from one -quarter inch down to the finest;- but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind -drifted send shall not be used. The sand shall be of such quality that the mortar composed of one part of the cement hereinbefore specified and three parts of sand,:by weight, when made into briquette, will develop a tensile strength at least equal to the strength of a mortar of the same consistency and pro- portion made"with the -same cement -and Standard O tawa sand. In no 'case shall the sand, when used for this concrete, contain frost or 'lumps of frozen'matter. -The gravel to be used in making this concrete shall be 'clean, hard, -free from dust, loam, vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable sizes grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (0 inch. In no case shall the gravel when used for this concrete contain frost or lumps of frozen matter. The sand and gravel shall be clean when delivered on the job, and shall be kept clean until used. The method used for measuring the ingredients in the con- crete shall be one that will insure a uniform proportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be considered one cubic foot. The'concrete shall be mixed in a batch machine mixer of a type that will insure a uniform distribution of the ingredients throughout the mass. Ingredients of the concrete or mortar shall be mixed to the desired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in color, and homogeneous. 'Clean water, free from oil, acidm alkali or veget- able matter shall be admitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the gravel from the mortar. ' The concrete shall be handled rapidly from the mixer to its place in the pavement., Successive batches shall be deposited in place on the sub -grade in a continuous operation so -that sections of the pavement between expansion joints, hereinafter specified, shall be entirely completed and without the use of intermediate cross forms or bulkheads. Concrete shall not be retempered or used that has partially hardened. The concrete shall be compacted and -brought to the established grade and shaped with a template or straight edge, and shall be brought to a comparatively even surface. After the concrete has been so brought to grade and shape, it hhall be finished by rolling with ah approved metallic roller, having a smooth even sruface. Said roller shall not be less than five feet in length, and not less than eight (8) inches nor more than twelve (12) inches in diameter and weighing not less than one hundred pounds (100 lbs). The roller shall be operated across the pavement from side to side 110198 c� of same, by means of ropes attached to each side of the roller, 2 5 at such angle with the center line of the pavement as to permit the roller to advance along the pavement two feet for each time across. After the roller has covered a given area in the manner desdribed, the same area shall be similarly roller by the roller for=not less than three (3) times at intervals of fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may be necessary,to remove excess water. All metalr maholes, catch basin covers, and other fixed objects shall be separated from the concrete pavement by a joint filler of the same character as hereinbefore specified for expan- sion joints; which joint.filler shall extend through the entire thickness of the pavement. As soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be sprayed with water; and it shall be kept thoroughly wet for at least ten days. As soon as it can be done without damage to the concrete, the surface thereof during hot and dry weather and if unshaded shall be covered with not less than one inch of earth, sawdust, straw or other suitable and available material, which covering shall be kept wet for at least four days after being placed. In dry hot weather freshly laid concrete shall be protected by a canvas covering until it can be sprinkled or covered as specified. The water and concrete aggregates shall be heated if at any time during the progress of the work the temperature is, or from weather reports will likely during the next twenty-four hours drop to (35) thirty-five degrees Fahrenheit. The concrete shall be protected against freezing for at least ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strength to resist- spring-ing out of shape. The f orms shall be securely staked or otherwise held to the established line, and their upper edges shall conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have previously been used. The pavement shall be thoroughly cleaned and open to the public as soon as the cement has set sufficiently to receive the traffic without injury to the surface or body of the concrete. CATCH BASINS For the purpose of receiving storm waters from the surface of the pavement herein provided to be constructed, two (2) catch ba-sins shall be constructed at the necessary points along the center line of said pavement. Said catch basins shall be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the turps of the iron covers herein required for said catch basins, when in place, to the upper surface of the proposed pavement. Said catch basins shall be cylindrical in shape having an internal diameter of thirty-six (36) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four ( 24 ) inches at the top of -the masonry by means of three (3) header courses of brick, laid endwise and horizontally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catch basins. Said catch -basins shall have walls eight (8) inches thick built (except as above specified for. header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch basins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one-(1) part of Portland cement of the best quality and one and one-half (1*) parts of clean, sharp sand mixed with sufficient clan water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch basins shall each rest on a solid bottom of two (2) inch pine planks laid closely in single thickness and securely spired to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. 26 The said bottom shall be made circular in form,,and shall measure fifty-four (54) inches in diameter and shall have its upper side placed four (4) feet below the upper surface of the brick wall for said catch basin. Said catch basins shall be connected with the sewer, or sewers as the case may be, now existing, or herein provided to be con- structed, as the case may be, in and along the center line of the said pavement, along which center line and over said sewer or sewers, the respective catch basins are to be constructed. Said catch basins shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed tale pipe having an internal diameter of six (6) inches and of the type known as "Bell and Spigot", the metal of which pipes shall be three -fourths (3/4) of an inch in thickness and shall be not less than two (2) feet in length. Said pipes shall be straight, smoot4, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and.workmanship. All joints between the pipe shall be securely sealed with a mortar of the quality herein required for brick walls in catch basins. Each catch basin connection shall start in a six-inch "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in toe said sewer at a point not less than eight (8) feet in advance of the center of the catchbasin measured along and in the downstream direction of the sewer. The pipe shall be laid true to line and grade and the connection shall enter the catch basin through the brick wall thereof at a point two and one. -half (2*) feet above the top of.the plank bottom of said catch basin. The pipe entering the catch basin through the brick wall thereof, shall be an elbow with the bell end turned downward inside the catch basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider,than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be back -filled as soon as practicable, in order to occasion the least possible incon- venience to the public in use of the alley, The trenches shall be promptly back -filled to a depth of twelve 112) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch basins shall each be equipped and fitted with a circular cast iron grate cover we4ghing not less than three hundred and sixty (360) pounds, said grate to be so constructed as to freely admit water from the surface of the pavement to the catch basin, and having a vertical heighth of nine (9) inches, the opening in said cover shall have a diameter of twent three (23) inches at the base and twenty-two and three -fourths (22 374-inches at the top thereof. Said catch basin covers herein provided to be furnished and set shall rest on the walls of the catch basins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls.in said catch basins. The walls shall be built to such height as will bring the tops of.the covers when set in place, to the upper surface of the pavement at the points where said catch basins are located. Said catch basins herein provided to be constructed, referring to the vertical axis thereof, shall be located as f01101Vs: On the center line of the alley herein provided to be paved: One at a point two hundred thirty (230) feet north of the north lot line of Lee Street. One at a point two hundred (200) feet south of the south lot line of Greenleaf Street. MANHOLES TO BE ADJUSTED AND BROUGHT TO GRADE The two brick manholes now located within the space herein provided to be paved, and which are already equipped with cast iron covers, shall have theft covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls o� said manholes as may be necessary to bring the covers of the manholes to the height above specified and also to insure a safe and serviceable roadway. In IZ19i98 2'7 making said adjustment, hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1*) parts of clean sharp sand mixed w_th sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. All the material used in the construction of the improve- ment hereinbefore specified shall beof the best quality and of a kind especially adapted for the purpose for which it shall be used, ,and all the necessary labor shall be performed in a good and work- manlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. SECTION 2. That the recommendation of the Board of Local Improvements of the City of Evanston providing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be andt;he same are hereby approved. SECTION 3. That said improvement shall be made and the whole cost there of including the sum of three hundred ten and 12/100 dollars ($310.12) being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assess- ment in accordance with an Act of the General Assembly of the State of Illinois, entitled"An Act Concerning Local Improvements", Approved June 11.4th, A.D. 1897, and the amendments thereto and that said sum of three hundred ten and 12AOO dollars ($310.121-shall be applied toward the cost of making, levying and collecting such assessment. SECTION 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into five installments, in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of five per centum per•annum according to law until paid. SECTION 5. And for the purpose of anticipating the col- lection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commis- sionscof Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the provisions of the Act of the General Assembly of .he State of Illinois, entitled,"An Act Concerning Local Improvements," approved June 14th.A.D. 1897, and the amendments thereto. SECTION 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner prescribed by law. SECTION 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. SECTION 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 6th day of June A.D. 1922. Approved: June 8th, 1922. John F. Hahn, H.P. Pearsons, City Clerk Mayor 28 RECOMENDATION, ESTIMATE AND ORDINANCE RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: We herewith submit an ordinance providing that the roadways of the following streets and alleys in the City of Evanston, County of Cook, State of Illinois, to -wit: the roadway of ' ASBURY AVENUE from the north line of CENTRAL STREET to the north LIMITS of said City of Evanston, to a width, including space to be occupied by curbing, of twenty-four (24) feet. The roadways of CHANCELLOR, LIVINGSTON and JENKS STREETS each from a point twenty-one (21)' feet east of the west line Qf ASBURY AVENUE to a point two hundred fifty-two (252) feet west of the west line of said AVENUE each to a width, including space to be occupied by curbing, of twenty-four (24),feet. The roadway of ISABELLA STREET fr = a point twenty-one (21) feet east of the west line of A SBURY AVENUE to a point two hundred fifty-two (252) feet west of the west line of said AVENUE to a width including, space to be occupied by curbing along the south side thereof of thirteen and one- half (13*) feet. Also the roadways to a width tincluding space to be occupied by curbing) of sixteen (16j feet of all intersecting alleys lying within said streets and not included in,the roadways thereof, be improved by grading, curbing with a Portland cement concrete curb (having a vertical heighth of twenty-four (24) inches and a width varying uniformly f rom six (6) inches at the top to eight (8) inches at the base thereof, said curb, where other than sandy soil is encountered, to be placed on a base, six (6) inches in thickness, of sand or cinders. The concrete used in constructing said curb, to be composed by volume of one 1 part of Portland cement, two (2) parts of clean sharp sand, four f4� parts of crushed gravel or stone, mixed with sufficient clean water to give proper plasticity, except that the top and exposed roadway faces of the curb are to be surfaced to a depth of one-half W inch with a mortar composed by volume of two (2) parts of Portland cement and three (3) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity, paving with a bituminous macadam pavement, consisting of a Portland cement concrete base five (5) inches in thickness, composed of Portland cement, sand and gravel mixed by volume in ratio of 1:3:5 respectively, with sufficient clean water to give proper plasticity, and a wearing surface three (3) inches in thickness, composed of broken limestone bound with two t2) applications of asphalt liquified by heat, using therefor not less than two and one-half (21) gallons of said asphalt for each and every square yard of finished pavement, the interstices between the stones used in the wearing surface to be filled with limestone screenings or chips, said wearing surface to be,finished with a coating of granite chips, usirigc-therefor not less than one one -hundred forty-fourth (lA44) of a cubic yard of said chips for each and every square yard of finished pavement, constructing necessary catch basins of hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement and one and one-half (1-J) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. Said catch basins to be placed (vertically) in the ground in such manner as to bring the tops of the iron covers herein required for said catch basins, when in place, to the upper surface of the proposed curbing. The walls of said catch basins to be eight (8) inches in thickness and to have a vertical heighth of five and one-half (5*) feet, extending from the upper side of the plank floors to be provided for said catch basins, to the bottom of the cast iron covers to be provided for the basins, said basins to be cylindrical in form and to have an internal diameter of forty-two (42) inches, except that the internal diameter of the upper portion of said catch basins is to be regularly reduced to twenty-four (24) inches by means of eight (8) header courses of brick. Said catch basins to rest on a circular pine plank floor two (2) inches in thickness and to be equipped with a circular cast iron cover weighing not less than three hundred and thirty (330) pounds and having a vertical heighth of thirteen (13) inches. Said cover to be imbedded in mortar of the quality herein required for brick walls in catch basins. Said catch basins to be connected with the sewers now in place in said streets by means of vitrified, salt glazedm tile pipe having an internal diameter of nine (9) inches and of the type known as bell and spigot, the metal of which pipe to be thirteen -sixteenths (13/16) of an inch in thickness, the joints between said pipes to be sealed with a mortar of the kind and quality herein required for catch basins. Said connections to be made at the sewers by means of tile pipe "Y" branchec, and at the catch basins by means of a tile pipe elbow each of the internal diameter, quality and thickness and laid in the manner herein required fog the pipe used in IZ19198 connecting catch basins to sewers, also adjusting existing 29 manholes and valve chambers by raising or lowering as the case may require the tops thereof to conform to the upper surface of the proposed improvement; together with an estimate of the cost of said improvement and recommend the passage of said ordinance and the making of the improvement contemplated therein. Respectfully submitted, H.P. PEARSONS, W. BLANCHARD, HAL W. SMITH. Boardt of Local Improvements of the City of Evanston, Illinois. Dated: Evanston, Illinois, June 6th, 1922. ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that the roadways of the following streets and alleys in the City of Evanston, County of Cook, State of Illinois, to -wit: the roadway of ASBURY AVENUE from the north line of CENTRAL STREET to the NORTH LIMITS of said City of Evanston, to a width, including space to be occupied by curbing, of twenty-four (24) feet. The roadways of CHANCELLOR, LIVINGSTON and JENKS STREETS each from a point; twenty-one (21) feet east of the west line of ASBURY AVENUE to a point two hundred fifty-two ( 252 ) feet west of the west line of said AVENUE, each to a width, in -eluding space to be .occupied by curbing, of twenty. -four. (24) feet. The roadway of ISABELLA STREET from a point twenty-one (21) feet east of t•he west- line of ASBURY AVENUE to a point two hundred fifty-two (252) feet west of the west line of said AVENUE. to a • wi•dth including space to .be. occupied by curbing along the south side thereof, of thirteen and one-half (13*) feet. Also .the • roadways, to a width (including space to be occupied by curbing) bf sixteen (16) feet, of all intersecting alleys lying within said streets and not included in the roadways thereof, be improved by grading, curbing with a Portland cement concrete curb (having a vertical-heighth of twenty-four (24)- inches and a width varying uniformly from six (6) inches at top to eight (8) inches at the base thereof, -said curb, where other than sandy soil is encountered, to be placed on a base, six (6) inches in thickness,. of.sand or cinders). The concrete used in constructing said curb, to be composed by volume of one (1) part of Portland cement, two (2) parts of clean sharp sand, four (4) parts of crushed gravel or stone, mixed with sufficient clean water to give proper plasticity, except that -the top and exposed roadway faces of the curb are to be surfaced to a depth of one-half (*) inch with a mortar com osed by,volume of two (•2) parts of Portland cement and three (3� parts of clean, sharp sand mixed with sufficient clean water to give • proper plasticity, paving with a bituminous macadam pavement, con- sisting of a Portland cement concrete base five (5) inches in thickness, composed of Portland cement, sand and gravel mixed by volume in ratio of 1:3:5 respectively, with sufficient clean water to give proper plasticity, and a wearing surface three (3) inches in thickness composed of broken limestone bound with two (2) applications of asphalt li uified by heat, using therefor not less than two and one-half (2*1 gallons of said asphalt for each and every square yard of finished pavement, the interstices be- tween the stones used in the wearing surface to be filled with limestone screenings or chips, said wearing surface to be finished with a coating of granite chips using therefor not less than one one -hundred forty-fourth (lA44) of a cubic yard of said chips for each and every square yard of finished pavement, constructing necessary catch basins, of hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement and one and one-half (1*) parts of clean, sharp sand mixed with suf- ficient clean water to give proper plasticity. Said catch basins to be placed (vertically) in the ground in such manner as to bring the tops of the iron covers herein required for said catch basins, when in place to the upper surface of the proposed curbing. The walls of said catch basins to be eight (8) inches in thickness and to have a vertical heighth of five and one-half (5*) feet, extending from the upper side of the plank floors to 30 be provided for .Rid basins, to the bottom of the cast iron covers to be provided for the basins, said basins to be cylindrical in form and to have an internal diameter of forty-two (42) inches, except that the internal diameter of the -upper portion of said catch basins is to be regularly reduced to twenty-four (24) inches by means of eight (8) header courses of brick. Said catch basins to rest on a circular pine plank floor two (2) inches in thickness and to be equipped with a circular cast iron cover weighing not less than three hundred and thirty (330) pounds and having a vertical heighth of thirteen (13) inches. Said cover to be imbedded in mortar of the quality herein required for brick walls in catch basins. Said catch basins to be connected with the sewers now in place in said streets by means of vitrified salt glazed, tile pipe having an internal diameter of nine (9) inches, and of -the type known as bell and spigot, the metal of, which pipe to be thirteen sixteenths (13A6) of an inch in thickness, the joints between said pipes to be sealed with a mortar of the kind and quality herein required for catch basins. Said connections to be made at the sewers by means of tile pipe "Y" branch, and at the catch basins by means of a tile pipe elbow each of the internal diameter, quality and thickness and laid in the manner herein regpired for tile pipe used in connecting catch basins to sewers, also adjusting existing manholes and valve chambers by raising or lowering as the case may require the tops thereof to conform to the upper surface of the proposed improvement; and presented to the City Council of the City of Evanston a recommendation that such improvement be, made I hereby submit an estimate of the cost of such improvement including labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assess- ment, as provided by law, viz: ESTIMATE OF COST 2500 cu. yds. of grading ® $150 per cu. yd. . . $ 30900.00 5500 line ft. of Portland cement concrete curb laid complete in place @ $1,= per line ft. 0 0 61,875.00 7400 Sq. yds. of concrete foundation laid complete in place ® $1.80 per sq. yde . 13,320.00 7400 sq. yde. of bituminous wearing surface laid complete in place ® $1.40 per sq. yd. 100360.00 24 brick catch basins including cast iron covers plank floors and excavation complete in place ® $8.00 each 1,920.00 LO manholes adjusted and brought to grade ® $10.00 each . . . . . 0 100.00 3 valve chambers adjusted and brought to grade ® $10.00 each 30.00 288 line ft. of nine (9) inch internal diameter tile pipe,catch basin connections, average depth of cut five (5) feet, laid complete in place including trenching and backfilling ® $1.00,per line ft. e e 288.00 For lawful expenses attending the proceedings for making said improvement and the cost of making and col- lecting the assessment therefor, not to exceed six per centum (6%) of the above, to -wit: $36,793.00 0 2.207 .58 Total . . o . . '$ 39, 000.58 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improvement and the lawful expenses attending the same. We BLANCHARD, Engineer of the Board of Local Im- provements of the City of Evan st on. Dated Evanston, Illinois. June 6th, 1922. AN ORDINANCE Providing that the roadways of the following streets and alleys in the City of Evanston, County of Cook, State of Illinois, to -wit: the roadway of ASBURY AVENUE from the n arth line of CENTRAL STREET to the NORTH LIMITS of said City of Evanston, to a width, including space to be occupied by curbing, of twenty-four (24) feet. The roadways of CHANCELLOR, LIVINGSTON and JENKS STREETS each from a point twenty-one (21) feet east of the west line of ASBURY AVER to a point two hundred fifty-two (252) feet west of the west line of said AVENUE, each to a width, including space to be occupied by curbing,, of twenty-four (24) feet. The roadway of ISABELLA STREET from a point twenty-one (21) IZ 0198 feet east of the west line of Asbury Avenue to a point two r hundred fifty-two (252) feet west of the west line of said AVENUE 0 to a w:.dth including space to be occupied by -curbing along the south side thereof, of thirteen and one-half (13J) feet. Also the roadways; to a width'(including space to be occupied by curbing) of sixteen (16) feet, of all intersecting alleys lying within said streets and not onc;uded in the roadways thereof, be improved by grading, curbing with a Portland cement concrete curb (having a vertical heighth of twenty-four (24) inches and a width varying uniformly from six (6) inches at the,top to eight (8),inches at the base thereof, said curb, where other than sandy soil is en- countered, to be placed on a base, six (6) inches in thickness, of sand or condere). The concrete used _n constructing said curb, to be composed by volume of one (1) part of Portland cement, two (2) parts of clean sharp sand, four (4) parts of crushed gravel or stone, mixed with sufficient clean water to give proper plasti- city, except that the top and exposed roadway faces of the curb are to be surfaced to a depth of one-half (*) :inch with a mortar com- posed by volume of two (2) parts of Portland cement and three (3) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity, paving with a bituminous macadam pavement, consisting of a Portland cement concrete base five (5) inches in thickness, composed of Portland cement, sand and gravel mixed by volume in ratio of 1:3:5 respectively, with sufficient clean water to give proper plasticity, and wearing surface three (3) inches in thickness, composed of broken limestone bound with two (2) applica- tions of asphalt, liquified by heat, using therefor not less than two and one-half (2f) gallons of -said asphalt for each and every square yard of finished pavement, the interstices between the stones used in the wearing surface to be filled with limestone screenings or chips, said wearing surface to be finished with a coating of granite chips using therefor not less than one one - hundred forty-fourth UA44) of a cubic yard of said chips for each axid every square yard of finished pavement, constructing necessary catch basins of hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement and one and one-half (1*) parts of clean, sharp sand mixed:with sufficient clean water to give proper plasticity. Said catch basins to be placed` (vertically) in the ground in such .Wanner as to bring the tops of the iron covers herein required for said catch basins, when in place to the upper surface of the proposed curbing. The walls of said catch basins to be eight (8) inches in thickness and to have a'vertical heighth of five and one-half (5f) feet, extending from the upper side of the plank floors to be provided for said catch basins, to the bottom of the cast iron covers: to be provided for the basins, said basins -to be- eylindri.;al in form and to have an internal diameter of forty-two (42) inches, except that the internal diameter of the upper portion of said catch basins is to be regularly reduced to twenty-four (24) inches by means of eight (8) header courses of brick. Said catch basins to rest on a circular pine plank floor two (2) inches in t hickness�and to be equipped with a circular cast iron cover weighing not less than three hundred and thirty (330)' pounds and having a vertical heighth of thirteen (13) inches. Said cover to be imbedded in mortar of the quality herein required for brick walls in catch basins. Said catch basins to be connected with the sewers now in place in said streets by means of vitrified, salt glazed, tile pipe having an internal diameter of nine (9) inches and of the tups known as bell and spigot, the metal of which pipe to be thirteen -sixteenths (13A6) of an inch in thickness, the joints between said pipes to be sealed with a mortar of the kind and quality herein required for catch basins. Said connections ,to be made at the sewers by means of a tile pi?e "Y" branch, and at the catch basins by means of a tile pipe elbow each of the internal diameter quality and thickness and laid in she manner herein required for tile pipe used in con- necting catch basins to sewers, also adjusting existing manholes and valve chambers by raising*or lowering as the lase may require the t6ps thereof to conform to -the upper surface of the proposed improvement. ' BZ IT'ORDAINSD BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvement shall be made within the City of Evanston, County of Cook, State of Illinois, the nsture, character, locality and description of which local improvement is as follows, to -wit: 32 That the roadways of the following streets and alleys in the City of Evanston, County of Cook, State of Illinois, to -wit: the roadway of ASBURY AVENUE from the north line of CENTRAL STREET to the NORTH LIMITS of said City of Evanston, to a width, including space to be occupied by curbing, of twenty-four (24) feet. The roadways of CHANCELLOR, LIVINGSTON and JENKS' STREETS each from a point twenty-one (21) feet east of the west line of ASBURY AVENUE to a point two hundred fifty-two (252) feet west of the west' line of said AVENUE, each to a width, including space to be occupied by curbing, of twenty-four (24) feet. The roadway of ISAVELLA STREET from a point twenty-one (21) feet east of the west line of ASBURY AVENUE to a point two hundred fifty-two (252) feet west'of the west .line of said AVENUE, to a width including spade to be occupied by curbing along the south side thereof, of thirteen and one-half (13*) feet. Also the roadways, to a width (including space to be occupied by curbing) of sixteen (16) feet, of all intersecting alleys lying within said streets and not included in the roadways thereof, be and the same are hereby ordered improved as follows: LOCATION OF ROADWAYS ` The center line of the roadways herein provided to be paved shall coincide with the center line of the respective streets and alleys within which said roadways are .included. WIDTH OF ROADWAYS The width of the roadways herein provided to be paved shall be as follows, measured in feet from back to back of the curb herein- after specified and at right angles to the center line of the respec- tive street or alley, as the case may be, to -wit: Asbury Avenue: At the north line of Central Street At north City limits Chancellor Street: At west curb line of Asbury Avenue At 231 feet west of Asbury Av. Livingston. Street: At west curb line of Asbury Avenue At 231 feet west of Asbury Avenue Jenks Street: At west curb line of Asbury Avenue at 231 feet west of Asbury Avenue Isabella Street: At west curb line of Asbury Avenue At 231 feet west of Asbury Avenue 24.00 feet 24.00 feet 24.00 feet 24.00 feet 24.00 feet 24.00 feet 24.00 feet 24.00 feet 13.50 feet 13.50 feet Alley 125 feet west of Asbury Avenue: At north curb line of Chancellor Street 16.00 feet At south curb line of Isabella Street 16.00 feet The width of roadway at intermediate points shall be respectively proportional to the foregoing. GRADE OF ROADWAY AND CURB The grade of the roadways herein provided to be paved, when finished, and the grade of the top of the curb hereinafter specified, when completed and set in place, are hereby established as follows, measured in feet and decimal parts of a foot above'the datum plane of the City of Evanston, to -wit: Crown Gutter Top of Transverse Section of Roadway Line Line Curb Asbury Avenue: At north line of Central St. 22.40 22.15 22.25 At 71 feet north of " "" 22.40 21.65 22.40 At center line of Chancellor St. west of Asbury Avenue 23.40 22.99 23.24 At 61 feet north of Chancellor St. 23.18 22.43 23.18 At center line of Livingston St. 24.35 23.98 24.23 At 205 feet north of of " 23.80 23.00 23.80 At center line of Jenks Street' 24.35 23.98 24.23 At 206 feet north of Jenks St. 23.70' 22.95 23.70 At south line of Isabella Street. 24.60 24.19 24.44 IZ19198Transverse Section of Roadway Chancellor Street.: Crown Gutter Top of Line Line Curb 33 At west curb line of Asbury Av. 23.40 22.93 23.24 At 65 feet west of Asbury Av. 23.24 22.50 23.24 At 133 feet west of Asbury Av. 23.40 22.99 23.24 At 221 feet west of Asbury Av. 23.24 22.50 23.24 At 231 of of If If to 23.24 22,84 23.24 Livingston Street: At west curb line of Asbury Av. 24.35 23.98 24.23 At 65 feet west of Asbury Av. 24.23 23.55 24.23 At 133 feet " if It If 24.35 23.98 24.23 At 221 feet "- " If " 24.23 23.58 24.23 At.231 " of to of If 24.23 23.83 24.23 Jenks Street: At west curb line of Asbury Av. 24.35 23.98 24.23 At 65 feet west of Asbury Av. 24.23 23.55 24.23 At 133 of of It of of 24.35 23.98 24.23 At 221 feet " " " " 24.23 23.58 24.23 At 231 feet of of to If 24.23 23.83 24.23 Isabella Street: At west curb line of Asbury Av. 24.60 24.19 24.44 At 65 feet west of Asbury.Av. 24.50 23.76 24.50 At 133 feet of of" It 24.75 24.40 24.65 At 221 " If If to of 24.80 24.00 24.80 At 231 feet " If of If 24.90 24.25 24.85 Alley 125 feet west of Asbury Av. At north curb line of Chancellor 23.40 22.99 23.24 At " lot to If . If 23.80 23.50 23.74 At south curb line of Livingston 24.35 24.00 24.23 At " lot If If of 24.85 24.50 24.73 At north curb line of If 24.35 24.00 24.23 At north lot line of " 24.85 24.50 24.73 At south curb line of Jenks St. 24.35 24.00 24.23 At of lot of of of If 24.85 24.50 24.73 At north curb line of to " 24.35 24.00 24.23 At north lot Of If If If 24.85 24.50 24.73 At south curb line of Isabella St. 24.75 24.40 24.65 At south lot line of Isabella St. 25.25 24.90 25.15 (a) The grade of the crown line, gutter line and top of curb at intermediate points shall be respectively proportional to the foregoing. The datum plane hereinafter mentione W is the plane of low water mark of Lake Michigan in the year A.D., 1847, as established by the Trustees of the Illinois and Michigan Canal and is 22.41 feet below the U.S, Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the northwest corner of Davis Street and Sherman Avenue, in said City of Evanston. The crown line hereinbefore mentioned shall be identical with the center line of the respective roadways when completed. The gutter with the lire where touches the face of r oadways. The surface when completed shall the respective crown symmentrieal. line hereinbefore mentioned shall be identical the surface of the roadways when completed the. curbing on both sides of the respective of the roadways herein conform to the arc of and gutter lines, and GRADING provided to be paved a circle passing through shall be true and Prior to laying down the pavement thereon, the roadways specified to be paved shall be cleaned in a thorough and workman- like manner of all debris and rubbish, such as deteriorated pave- ments, crossings, box drains, culverts, stumps, etc. The sub - grade shall be prepared by excavating the soil, or filling there- upon with ocher and suitable soil to such depths and shapes as will insure the finished pavement being at the ,grade established therefor. Spongy earth that is unfit to be left in the sub -grade shall be 3 4 removed by the contractor without extra charge. The sub -grade shall be rolled with a suitable roller or flooded with -water; or both as may be found necessary and practicable to thoroughly compact same. Any depressions that may appear as the rolling or flooding of the sub -grade progresses shall be filled upon -at the surface with suitable soil and thoroughly .compacted as before specified. CONCRETE CURB A concrete curb shall be constructed on both sides of the respective roadways herein provided to be paved. Said curb shall con- sist.of a mixture,.by volume, of one part of Portland cement, two parts of sand and four parts of crushed gravel or stone. Except that the top and exposed roadway face of the curb shall be surfaced to a depth of one-half inch with.a mortar composed of two parts of Portland cement and three parts of,clean sharp sand of the sizes hereinafter specified for the sand,to be.used in making this curb. The crushed gravel or stone specified for the body of the curb shall be clean, hard, free from dust, loam, vegetable or other deleterious matter, and shall show sharp edged cubical fracturing; This.crushed.gravel or stone shall be of variable sizes grading from a maximum dimension of one inch down to a minimum of one-fourth inch, and so proportioned that the particles capable of passing through a screen of three -fourths inch mesh will fill the voids in the particles retained on such size screen, but without more than ten per cent excess of the smaller particles. The sand -specified for the curb shall be free from clay, loam vegetable or -other -deleterious matter. The grain shal.l be angular, and shall range in size fron one -quarter inch down to the finest, but not more than 3 per cent shall pass through a sieve having (100) one hundred meshes per lineal inch. The sand -shall be of such quality that mortar composed of one part -of the cement•hereinbefore specified and three parts of the sand by weight, when made into briquette, will develop a tensile strength at least equal to the strength of a mortar of the same consistency and proportions made with the same cement and Standard Ottawa sand. The Portland cement specified for the curb shall be of such quality that representative samples collected from the shipments made for the job shall be capable of passing the tests for fineness, sound- ness, initial setting, and tensile strength hereinafter set forth for Portland cement. The sand and crushed gravel or stone shall be clean when delivered on the job and shall be kept clean until used. In no case shall the sand and crushed gravel or stone, when used, contain frost or lumps of frozen matter. Forms shall be used in constructing the curb,. The forms shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or other- wise held to the established lines and grades, Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have been previously used. The ingredients specified for the curb shall be mixed in a batch machine mixer of a tupe that will insure a uniform mixture and product. Clean water, free from oil, acid, alkali, or vegetable matter shall be admitted to the mixer in sufficient quantity to t)roduce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the crushed gravel or stone from the mortar. Provided, that on such portions of the work as it may be impracticable to use the machine mixer, thorough and efficient hand mixing will be allowed. The equipment used±, if any, for hand mixing shall be as specified for mixing the.surfacing mortar. The ingredients specified for the mortar to be used in surfacing the -top and exposed roadway, face of the curb shall be mixed on a movable, tight iron platform, of ample size to accommodate the manipulations specified without getting the ingredients off the plat- form or mixed with dirt. 110198 35 The Portland cement and sand specified for surfacing portions of the curb shall be thoroughly mixed on the platform with hoes or shovels, and until the color becomes uniform, after which sufficient water, of the quality hereinbefore required, shall be gently added, while the mixing xontinues, to produce a stiff and homogeneous mortar. The concrete and the finishing mortar after being prepared as specified shall be promptly deposited and compacted in the forms, in layers not exceeding six inxhes in depth. The back of the curb shall be worked witha spade to secure a well filled surface. The front upper edge of the curb shall be rounded to a radius of one and one-half inches in such manner that the planes of the top and roadway face of the curb will be tangent to the curve described by said radius. As soon as the cement has sufficiently set, the forms shall be removed from the face of the curb; and the face mortar shall be promptly trovoded down hard and smooth, drawing the cement from the crushed gravel or stone as little as possible. The gloss shall be removed with a wet brush. The curb shall be constructed in sections not less than four feet nor more than six feet in length. In constructing the curb, all templates used to form.the sections shall be kept per- pendicular to the top of the curb. All joints shall be neatly tool finished. The joint marking shall correspond to the joint made by the templates. The curb shall be twenty-four inches in depth, and the thickness shall vary uniformly from six inches at the top to eight inches at the bottom of the curb. The curb shall be built in such manner that the roadway face will be vertical; that the top will be at the grade hereinbefore established; and that the back of the curb, at the top thereof shall be on the lines hereinbefore established. The curb at intersecting alleys and streets, shall be constructed to true curves tangent to the intersecting curb lines proper. The radius of the curve to which the back of the curb shall conform shall be ten feet for intersecting street and six feet for intersecting alley curb lines. Except as above specified, for intersecting street and alley curb lines, the xurb shall be con- structed parallel to the center line of the respective roadways herein provided to be paved. The curb shall be constructed at such distances from the center line of the roadways, herein pro- vided to be paved, as will give the respective width of roadways hereinbefore specified and established, when -measured from back to back of curb in the manner and on the lines hereinbefore set forth. Trenches shall be excavated to sufficient width and depth to receive the curb and necessary moulding frames. Wherever other than sandy soil is encountered the curb trenches shall be excavated to a depth of six inches below the bottom of the curb and shall be re -filled to such depth with sand or cinders. The sand or cinders shall be compacted with water or.by hand tampers. The frames shall be securely fastened in place and shall be accurately brought to line and grade before they are filled with concrete. The grade and line to which the frames are to be set shall be such as is necessary to insure the finished curb being true to the lines and grades hereinbefcre established therefor. PORTLAND CEMENT CONCRETE FOUNDATION Upon the sub -grade prepared as hereinbefore specified, shall be constructed a Portland cement concrete foundation, five (5) inches thick, The concrete shall be composed by volume, of one (1) part of Portland cement; three (3) parts of clean, hard grained, and sharp sand; and five (5) parts of clean, hard lime- stone or gravel broken or graded so as to yield a range of sizes (in longest dimension) from two (2) inches down to one-half () inch, and so proportioned as to produce a maximum number and minimum volume of interstices in the aggregate. The concrete shall be prepared by mixing the cement, sand and stone or gravel in an approved batch mixer with sufficient clean water and mixing sufficiently to.produce a plasticity best suited to the conditions of weather and soil. The concrete mixed as above specified, shall be promptly s-oread on the surface of the sub -grade to the required thickness, and to such shape and grade as will insure the upper surface of 36 the foundation after being thoroughly compacted by rolling or tamping, being parallel with and three (3) inches below the grade hereinbefore specified for the finished roadway. The upper surface of the foundation shall not be troweled smooth but shall be left moderately rough to grip,the bituminous macadam pavement specified to be laid thereon. . BITUMINOUS MACADAM PAVEMENT Upon the foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard, broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly s read, and in sufficient quantity to insure a thickness of three (3� inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be evenly applied to the limestone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one and three quarters (li) gallons thereof being evenly spread on and used in each and every square yard of the roadway, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing.with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size ranging from the largest particle that would pass through a sieve having circu- lar,;holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diameter. The limestone screenings shall be used in suf- ficient quantity to snugly fill the interstices,in the course of stone to which same is applied. Immediately following the spreading of these limestone screenings the roadway so covered, shall be given a thorough rolling with a roller of the weight and type here- inbefore named. This rolling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the roadway shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be evenly applied to the surface of.the pavement a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread as to indure not les$ than three quarters M gallon thereof being evenly spread and used on each and every square yard of roadway. Immediately after the second application of asphaltic cement is made and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one -eighth inch. The gra,uite chips shall be spreadinn such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of the roadway. A final rolling of the roadway shall closely follow,the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The,final rolling shall continue until the surface of the roadway is thoroughly compacted, and brought to a surface, free from derpessions and true to form and grade. Any and all• depressions developing during progress of the rolling, required,in process of constructing the pavement herein provided to be built, shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller lZi9i98 is operating. The gutters shall be kept trimmed to the required 37 thickness and grade as the work progresses. The cubic yardage of stone, herein required, shall be verified by measurement of volume thereof in cars, or other con- veyances, transporting the same to said City, and prior to initial unloading, and shall be further verified by measured length of dumps and height of grade marks on the work. The stone shall be hauled on to the work in boxes of uniform size and contents and of such shape as to enable an easy and exact determination of the volume contained therein to be made on the site. ,The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following requirements and of passing the following tests, to -wit: - (1) TtLe asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural asphalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manu- facturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so prepared for use as to best adapt it to the climatic and traffic conditions of the roadway on which it is to be used. (2) Its specific gravity shall be.greater than 980 at 77 degrees Fahrenheit. (3) It must have a penetration between 5 and 10 milli- meters at 77 degrees�Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenehit under 200 grams for one minute. (4) It shall be practically free from water, decomposi- tion products, coke -or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be present in homogeneous solution, no granular constituent being present. (5) It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6) 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7) It shall be soluble in chemically pure carbon disul- phide at air temperature to the extent of at least 95%. (8) Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98*% shall be soluble in cold carbon tetrachloride. (9) The bitumen of the cement shall be soluble in 75 degrees Baunie petroleum, at the - air temperature to the extent of not less than 72 per cent. (10) Upon ignition, the bitumen of the cement shall yield' not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. CATCH BASINS. For the purpose of receiving storm waters from the surface of the roadway or roadways, as the case may be, herein provided to be paved twenty-four (24) catchbasins shall be con- structed at the necessary points along the sides of the aforesaid roadway or roadways. Said catchbasins shall be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops o-f the iron covers herein required for said catchbasins, when in place, to the upper surface of the proposed curbing. Said catchbasins shall be cylindrical in shape having an internal diameter of forty-two (42) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by 3 8 means of eight (8) header courses of brick laid endwise and horizontally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catchbasins. Said catchbasins shall have walls eight (8) inches thick, built (except,as above specified for header courses) of alernate vertical and horizontal courses. The brick used in the construction of said aatchbasins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1*) parts of clean, sharp sand mixed with suffi- cient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leaka e. Said catchbasins shall each rest on a solid bottom of two T2.) inch pine planks closely laid in single thickness and securely spiked to two 2 pine stringers, or cross planks two (2) inches thick by six �6� inches wide. The said bottom shall be made circular in form, and shall measure sixty (60) inches in diameter and shall have its upper side placed five and one-half (5*) feet below the upper surface of the brick wall for said catch basin. Said catch basin shall be con- nected with the sewer or sewers, as the case 'may be, now existing or herein provided to be constructed, as the case may be, in and along the center line of the said roadway or roadways at the side of which the respective catch basins are to be constructed. Said catch basins shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed, tile pipe having an internal diameter of nine (9) inches and of the type.known as "Bell and Spigot" the metal of which pipe shall be thirteen-oixteenths (13A6) of an inch in thickness and shall be not less than two (2) feet in length. Said pipe shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipes shall be securely sealed with a mortar of the quality herein required .for brick walls in catch basins. Each catch basin Connection shall start in a nine (9) inch vitrified, salt glazed, tile pipe "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the server at a point not less than six (6) feet in advance of the catch basin, measured along and in the downstream direction of the sewer from a point op said sewer directly opposite the catch basin. The pipes shall be laid true to line and grade and the connection shall enter the catch basin at a point two and one-half (2*) feet above the plank bottom. The pipe entering the catch basin through the brick Walls thereof shall be an elbow with the bell end turned downward inside the catch bason to form a trap. The pipe shall be laid in open trenches. The trenches -shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be backfilled as soon as practicable in order to occasion the least possible inconvenience to the public in use of the street. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch basins shall each be equipped and fitted with a castiron cover weighing not less than three hundred and thirty (330) pounds and having a vertical height of thirteen (13) inches, which cover shall be of the same size and pattern or equal in size, quality and workmanship to the castiron covers now in use on existing catch basins in Dempster Street between Ridge Avenue and Dodge Avenue in said City of Evanston. Said catch basin covers herein provided to be furnished and set shall rest on the walls of the catch basins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catch basins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the elevations herein - before specified for the top of the curb at the points where said catch basins are to be located. MANHOLES TO BE ADJUSTED AND BROUGHT TO GRADE The ten (10) brick manholes now located within the space herein provided to be paved, and which are already equipped with 110198 east iron covers, shall have their covers raised or lowered, as 39 the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said manholes as may be necessary to bring the covers of the manholes to the height above specified and also to insure a safe and serviceable roadway. In making said adjustment, hard bur ned,sewer brick laid in a mortar composed by volume of one (1) art of.Portland cement of the best quality and one and one-half l*) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be im- bedded in a mortar of the kind and wuality required for use in ad- justing said walls. VALVE CHAMBERS TO BE ADJUSTED AND BROUGHT TO GRADE 'The three (3) brick valve chambers now located within the "space herein provided to be paved, and which are already equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the Walls of said valve chambers as may be. necessary to bring the covers to the height above specified, and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a mortar, composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1j) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. BRICK All brick to be used in constructing catch basins and manholes dnd in adjusting catch basins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein.provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight, of cltay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent'of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100j) meshed per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of -a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL. All crushed lime stone or gravel to be used in the im- provement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CE".70T The Portland cement to be used in the improvement herein provided to be made shall be of such quality that represen- tative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength, to -wit: Fineness. The cement shall be so ground that 92% will pass through a standard sieve, having 10,000 meshes and 75% will pass through a sieve having 40,000 meshes per square inch. S6undness., A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, protected by a damp cloth, for twenty- four hours, and shall then be subjected to steam for four hours, 4 0 and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquette of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. .The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows. Age Neat Cement Strength 24 hours in moist air . 175 lbs. 7 days (1 day in moist air, 6 days in water) 500 lbs. 28 days (1 day in moist air, 27' days in water) . 600 lbs. One part Cement. Three Parts Standard Ottawa Sand 7 days (1 day in moist air, 6 days in water 200 lbs. 28 days (1 day in moist air, 27 days in water) 275 lbs. The briquette shall show no retrogression in strength within the period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the Bork shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The tile pipe to be used in the improvement herein provided to be made shall be of the bell type. Said ripe shall be cylindrical straight, smooth, sound thoroughly vitrified, sal;_t glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said pipe shall give a clear ring when lightly struck with a mason's hammer. Said'pipe shall be not less than two (2) nor more than three (3) feet in length. - The thickness of the metal of which pipd shall be respect- tively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13/16) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the improve- ment hereinbef ore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all the necessary labor shall be performed in a good and workman- like manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. SECTION 2. That the recommendation of the Board of Local Improvements of the City of Evanston providing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. SECTION 3. That said improvement shall be made and the whole cost thereof including the` sum of .two thousand two hundred seven and fifty-eightA O0 dollars ($9,207.58) being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein be paid far by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concern- ing Local Improvement$", approved June 14th, A.D. 1897, and the amendments thereto, and that said sum of two thousand two hundred seven and 58AOO dollars ($2,207.58) shall: be 'applied toward the cost of making, levying and collecting such assessment. 1��9i98 SECTION 4. That the aggregate amount herein ordered to be 41 assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into 10 in- stallments in the manner provided by the statute in such case :Wade and provided, and each of said installments, shall beart interest at the rate of five per centum per annum according to law until paid. SECTION 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments ,bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the provisions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improvements," approved Tune 14th, A.D. 1897, and the amendments thereto. SECTION 6. That the Corporation Counsel be and he is hereby directed to file a petition in the county Court of Cook County, Illinois, in the name of the City of Evanston, pwying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner prescribed by law. SECTION 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. SECTION 8. This ordinance shall be in force from and after"its passage. Adopted by the City Council of the City of Evanston on the 6th day of June A.D. 1922. Approved: June 8, 1922. John F. Hahn, H.P. Pearsons, City Clerk Mayor. RECQASMENDATION, ESTIMATE AND ORDINANCE. RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: We herewith submit an ordinance providing that the roadways of the following streets and alleys in the City of Evanston, County of Cook, State of Illinois, to -wit: the roadway of JACKSON AVENUE from the south line of LINCOLN STREET to a point forty-five (45) feet south of the north line of COLFAX STREET, the roadway of COLFAX STREET from a point twenty-one (21) feet east of the west line of JACKSON•AVENUE to the west line of ASHLAND AVENUE, tYfe :roadway of ASHLAND AVENUE from a point twenty-one (21) feet south of the north line of COLFAX STREET to the south line of LINC OLN STREET, each to a width, including space to be occupied by curbing, of twenty-four (24) feet, also the roadways of all inter- secting alleys lying within said portion of said streets and not included in the roadways thereof to adth, including space to be occupied by curbing, of sixteen (16rifeet, be improved by grading, curbing with a Portland cement concrete curb (having a vertical height of twenty-four (24) inches and a width varying uniformly from six (6) inches at the top to eight (8) inches at the base thereof, said curb, where other than sandy soil is encountered to be placed on a base six (6) inches in thickness of sand or cinders). The concrete used in constructing said curb to be composed by volume of one (1) part of Portland cement, two (2) parts of clean, sharp sand, four (4) parts of crushed gravel or stone,:mixed with sufficient clean water to give proper plasticity, except that the top and exposed roadway faces of the curb are to be surfaced to .. _-Do` 42 a de th of one-half (*) inch with a mortar composed by volume of two ?2) parts of Portland cement and three (3) parts of 'clean, sharp sand mixed with sufficient clean water to give proper plasticity, paving with a bituminous macadam pavement, consisting of a Portland cement concrete base five (5) inches in thickness, composed of Portland cement, sand and gravel, mixed by volume in ratio of 1:3:5 respectively, with sufficietn clean water to give proper plasticity and a wearing surface three (3) inches in thickness, composed of broken limestone bound with two (2) applications of asphalt, liquified by heat, using therefor not less than two and 'one-half (2*) gallons of said asphalt for each and every square yard of finished pavement, the interstices between the stones used in the wearing surface to be filled with limestone screenings or chips, said wearing surface to be finished with a coating of`granite chips using therefor not less than one one -hundred forty-fourth UA44) of a cubic yard of said chips for each and every square yard of finished pavement, constructing necessary catchbasins of hard burned sewer brie]; laid in a mortar composed b volume of one (1) part of Portland cement and one and one-half (1;� psrts`of clean, sharp sand mixed with sufficient clean water to give proper plasticity: Said catchbasins to be placed vertically in the ground in such manner'as to bring the tops of the`iron covers herein required for said catchbasinsm when in place to the upper surface of the proposed curbing. The walls of said catchbasins to be eight (a) inches in thickness and to have a vertical heighth of five and one- half (5*) feet, extending from the upper side of'the plank'floor to be provided for said basins, to the bottom of the cast iron cover to be provided for the basins, said basins to be cylindrical in form and to have an internal diameter of forty-two (42) inches, except that the internal diameter of the upper portion of said catchbasins is to be regularly reduced to twenty-four (24) inches by means of eight (8) header courses of brick. Said catchbasins to rest on a circular pine plank floor two (2) inches in thickness and to be equipped with a cast iron cover weighing not less than three hundred and thirty (330) pounds and having a vertical height of thirteen (13) inches. Said cover to be imbedded in mortar of the quality herein required for brick walls in catchbasins. Said catchbasins to be connected with the sewers now in place or to be constructed as the case may be, in said streets by means of vitrified, salt glazed, tile pipe having an internal diameter of nine inches and of the type known as bell and spigott, the metal'of which pipe to be thirteen -sixteenths (13A6) of an inch in thickness, the joints between said pipes to be sealed with a mortar of the kind and qu ality*hereih required for catchbasins. Said con- nections to be made at`the sewers by means of a tile pipe "Y" branch, and at the catchbasins by means of a tile pipe elbow each of the internal diameter, quality and thickness and laid in the manner herein required for tile pipe used in connecting catchbasins to sewers, con- atructing surface drainage sewers of vitrified, salt glazed, tile pipe having an internal diameter of nine (9) inches and of the type known as bell and spigott, the thickness of the metal in said pipes to be thirteen -sixteenths (13A6) of an inch, the joints between the said pipes to be sealed with a mortar of the kind and quality herein required for catchbasins. Adjusting existing,manholes and valve chamber by raising or lowering as the case may require, the tops thereof to conform to the upper surface of the proposed improvement; together with an estimate of the cost of said improvement and recommend the passage of said ordinance and the making of the improvement con- templated therein. Respectfully submitted, H.P. PEARSONS, WM. BLANCHARD, HAL W. SMITH. BJOard of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, Illinois, June 6th, 1922. - - - - - - - - - - ESTIMATE OF ENGI NESR OF BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled The Board of Local Improvements of the City of Evanston having adopted a resolution that , the roadways of the following IZ 0198 streets and alleys in the City of Evanston, County of Cook, State `� 3 of Illinois, to -wit: the roadway of JACKSON AVENUE from the south line of LINCOLN STREET to a point forty-five (45) feet south of the north line of COLFAX STREET, the roadway of COLFAX STREET from a point twenty-one (21) feet east of the west line of JACKSON AVENUE to the west line of ASHLAND AVENUE, the roadway of ASHLAND AVENUE from a point twenty-one (21) feet south of the north line of COLFAX STREET to the south line of LINCOLN STREET, each to a width', including space to be occupied by curbing, of twenty-four (2Q. feet, also the roadways of all intersecting alleys lying within said portion of said streets and not included in the roadways thereof to a width, including space to be occupied by curbing, of.sixteen (16),feet, be improved by grading, curbing with a Portland cement concrete curb (having a vertical heighth of twenty-four (24) inches and a width,varying uniformly from- six (6), inches at the, top to eight (8) inches at the base thereof, said curb, where other than sandy soil is encountered, to be placed on a base six (6) inches in thickness of sand or cinders). The concrete used in constructing said curb to be composed by volume of one (1) part of Portland cement, two (2) parts of clean, sharp sand, four (4) parts of crushed gravel• or. stone,. mixed with with sufficient clean water to give proper plasticity, except that the top exposed roadway faces of the curb are to be surfaced to a depth of one-half (*J) inch with a mortar composed by volume of two (2) parts of. Portland cement and three (3) parts of clean, sharp sand mixed with suffi- cient clean water to give proper plasticity, paving with,a bituminous macadam pavement, -consisting of a Portland cement concrete base Five (5) inches in thickness, composed of Portland cement, sand and gravel, mixed by volume in ratio of 1:3:5 respectively, with suffi- cient clean water to give proper plasticity, and a wearing surface three (3) inches in thickness, composed of broken limestone bound with two (2) applications of asphalt,,li uified by heat, using therefor no-t Iess- than two and one-half �2*:) gallons of said asphalt for each and every square yard of finished pavement, the interstices- between the stones used in the westing surface to be filled with limestone screenings or chips, said wearing surface to be finished with a coating of granite chips using therefor not less than one one -hundred forty-fourth (1/144) of a cubic yard of said chips for each and every square yard of finished pavement, con- structing necessary catchbasins of hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement and one and one-half (1-J) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. Said catchbasins to be placed bertically in the ground in such manner as to bring the tops of the iron covers herein required for said catchbasins, when in place to the upper surface of the proposed curbing. The walls of said catchbasins to be eight (8) inches in thickness and to have a vertical heighth of five and one-half (6*) feet, extend- ing from the upper side of the plank floor to be provided for .said, basins, to the bottom of the cast iron cover to be provided for the basins, said basins to be cylindrical in form and to have an interal diameter of forty-two (42) inches, except that the internal diameter of the upper portion of said catchbasins is to be regularly reduced to twenty-four.(24) inches by means of eight (8) header courses of brick. Said catchbasins to rest on a circular pine plank floor two (2) inches in thickness and to be equipped with a cast iron cover weighing not less than three hundred and thirty (330) pounds and having a vertical heighth hf thirteen (13) inches. Said cover to be imbedded in mortar of the quality herein required for brick walls in catchbasins. Said catchbasins to be connected with the sewers now in place or to be constructed as the case may be, in said streets by means of vitrified, salt glazed, tile pipe having an internal diameter of nine inches and of the type known as bell and spigott, the metal of which pipe to be thirteen -sixteenths (13/16) of an inch in thickness, the joints between said pipes to be sealed with a mortar of the kind and quality herein required for catchbasins. Said connections to be made at the sewers by means of a tile pipe "Y" branch, and at the catchbasins by means of a tile pipe elbow each of the internal diameter, quality and thickness and laid in the manner herein required for tile pipe used in connecting catchbasins to sewers, constructing surface drainage sewers of vitrified, salt glazed, the pipe having an internal diameter of nine (9) inches and of the type known as bell and spigott, the thickness of the metal of said pipes to be thirteen -sixteenths (13/16) of an inch, the joints between said pipes to be sealed with a mortar of the kind and quality herein re iuired for catchbasins. Adjusting existing man- holes and valve chamber,by raising or lowering as the case may require, the tops thereof to conform to the upper surface of the 44 proposed improvement; and presented to the City Counc 1 of the City of Evanston a recommendation that such improvement be made, I hereby submit an estimate of the cosh of such improvement in- cluding labor, material and lawful expenses attending the pro- ceedings for making said improvement and the cost of making and collecting the assessment, as provided by law, viz: , EST MATE OF COST 1580 cu. yds. of grading.® $1.50 per cu. yd. . . . $ 3060 tin. ft. of Portland cement concrete curb laid complete in place ® $1.25 per lin. ft. 4280 sqyds. of concrete base laid complete in place ® $1.80 per sq. yd. . . . . 4280 sq. yds. of bituminous wearing surface laid complete in place ® $1.40 per sq. yd. 0 . 300 lin. ft. of 9" internal diameter surface draina e sewers (average depth of cut five and one-half 15J) feet, laid complete in place including trenching and back filling ® $1.75 per lin. ft., . 11 brick catchbasins including cast iron covers, plank floors and excavation, complete in place ® $80.00 each 132 lin. ft. of 9" internal diameter tile pdpe catch basin connections (average depth of cut five (5) feet, including trenching and backfilling) laid complete in place ® $1.00 per lin. ft. 4 manholes adjusted and brought to,grade ® $10.00 each 1 valve chamber adjusted and brought to grade. . For lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment therefor,, not to exceed six per centum (6%) of the above, to -wit: $21,478.00 2,370.00 3,825.00 79704.00 5,992.00 525.00 880.00 132,00 40.00 10.00 1.288.68 Total . $ 22,766.68 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improvement and the lawful expenses attending the same. WM. BLANCHARD Engineer of the Board of Local Im- provements of the City of Evanston. Dated, Evanston, Illinois. June 6th, 1922, AN ORDINANCE Providing that the roadways of the following streets and alleys in the City of Evanston, County of Cook, State of Illinois, to -wit: the roadway of JACKSON AVENUE from the south line of LINCOLN STREET to a point forty-five (45) feet south of the north line of COLFAX STREET, the roadway of COLFAX STREET from a point twenty-one (21) feet east of the west line 6F JACKSON AVENUE to the west line of ASHLAND AVENUE, the roadway of ASHLAND AVENUE from a point twenty-one (21) feet south of the north line of COLFAX STREET to the south line of LINCOLN STREET, each to a width, including space to be occupied by curbing, of twenty- four (24) feet, also the roadways of all intersecting alleys lying within said portion of said streets and not included in thq roadways thereof to a width, including space to be occupied by curbing, of six- teen (16) feet, be improved by grading, curbing with a Portland cement concrete curb (having a vertical heighth of twenty-four (24) inches and a width varying uniformly from six (6) inches at the top to wight (8) inches at the base thereof, said curb, where other than sandy soil is encountered, to be placed on a base six (6) inches in thickness of sand or cinders). The concrete used in constructing said curb to be composed by volume of one (1) part of Portland cement , two parts (2) of,clean, sharp sand, four (4) parts of crushed gravel or stone, mixed with sufficient clean water to give proper plasticity, except that the top and exposed -roadway faces of the curb are to be surfaced to a depth of one-half (*) inch with a mortar composed by volume of two (2) parts of Portland cement and three (3) parts of clean, charp sand mixed with sufficient clean water to give proper plasticity, paving with a bituminous macadam pavement, consisting of a Portland cement concrete base five (5) inches in thickness, composed of Portland 1119198 45 cement, sand and gravel ,mixed by volume in ratio of 1:3:5 respectively, with sufficient clean water to give proper plasticity, and a gearing surface three (3) inches in thickness, composed of broken limestone bound with two (2) applications of asphalt, liquified by heat, using therefor not less than two and one-half (2*) gallons of said asphalt for each and every square yard of finished pavement, the interstices between the stones used in the wearing surface to be filled with limestone screenings or chips, said wearing surface to be finished with a coating of granite chips using therefor not less than one one -hundred forty-fourth (1/144) o: a cubic yard of said chips for each and ecery square yard of finished pavement, constructing necessary catchbasins of hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement and one and one-half (1*) parts of clean, sharp sand mixed with sufficient clean water to five proper plasticity. Said catchbasins to be placed vertically in the ground in such manner as to bring the tops of the iron covdrs herein required for .said catchbasins, when in place to the upper surface of the proposed curbing. The walls of said catchbasins to be eight (8) inches in thickness and to have a vertical heighth of five and one-half (5j)=feet, extending from the upper side of the plank floor to beprovided for said basins, to the bottom of the cast iron cover to be provided for the basins, said basins to be cylindrical in form and to have an internal diameter of forty-two (42) inches, except that the internal diameter of the upper portion of said catchbasins is to be regularly reduced to twenty-four (24) inches by means of eight (8) header courses of brick. Said catchbasins to rest on a circular pine plank floor two (2) inches in thickness and to be equipped with a cast iron cover weighing not less than three hundred and thirty (330) pounds and having a vertical heighth of thirteen (13) inches. Said cover to be imbedded in mortar of the quality herein required for brick walls in catchbasins. Said catchbasins to be connected with the sewers now in place or to to constructed as the case may be, in said streets by means of vitrified, salt galzed, tile pipe having an internal diameter of nine inches and of the type known as bell and spigott, the metal of -which pipe to be thirteen -sixteenths (13A6) of an inch in thickness, the joints between said pipes to be sealed with a mortar of the kind and quality herein required for catchbasins. Said connections to be made at the sewers by means df a tile pipe "Y" branch, and at the catchbasins by means of a tile pipe elbow each of the internal diameter, quality and thickness and laid in the manner herein required for tile pipe used in connecting catch - basins to sewers,•constructing surface drainage sewers of vitrified salt glazed, tile pipe having an internal diameter of nine (9) inches and of the type known as bell and spigott, the thckness of the metal in said pipes to be thirteen -sixteenths (13A6) of an inch, the joints between said pipes to be sealed with a mortar of the kind -and quality herein required for catchbasins. Adjusting existing -manholes -and valve chamber by raising or lowering as the case may require, the tops thereof to conform to the upper surface of the proposed improvement. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvement shall be made within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local im- provement is as follows; to -grit: That the roadways of the following streets and alleys in the City of 3vanston, County of Cook, State of Illinois, to -wit: the roadway of JACKSON AVENUE from the south line of LINCOLN STREET to a point forty-five (45) feet south of the north line of COLFAX STREET, the roadway of COLFAX STREET from a point twenty-one (21) feet east of the west line of JACKSON AVENUE to the west line of ASHLAND AVENUE, the roadway of ASHLAND AVENUE from a point twenty- one (21)•feet south of the north line of COLFAX STREET to the south line of LINCOLN STREET, each to a width, including space to be, occupied by curbing, of twenty-four (24) feet, also the roadways of all intersecting alleys lying within said portion of said streets and not included in the roadways thereof to a width, including space to be occupied by curbing, of sixteen (16) feet, be and the same is hereby ordered improved as follows: LOCATION OF ROADWAYS. The center line of the roadways herein provided to be 4 6 paved shall coincide with the center line of the respective streets and alleys within which said roadways are included. WIDTH OF ROADWAYS The width of the roadways herein provided to be paved shall be as follows, measured in feet from back to back of the curb hereinafter specified and at right angles to the center line of the respective street or alley, as the case may be, to -wit: Jackson Avenue: At the south lot line of Lincoln Street 24 feet At the south curb line of Colfax Street 24 feet Colfax Street: At west curb line of Jacksom Avenue 24 feet At west lot line of Ashland Avenue 24 feet Ashland Avenue: At north curb line of Colfax Street 24 feet At south lot line of Lincoln Street 24 feet Alley two hundred (200) feet south of Lincoln Street: At west curb line of Jackson Avenue 20 feet At west lot line of Jackson Avenue 20 feet At east lot line of Ashland Avenue 20 feet At west lot line of Ashland Avenue 20 feet The width of roadway at intermediate points shall be respectively proportional to the foregoing. GRADE OF ROADWAY AND CURB • The grade of the roadways herein provided to be paved, when finished, and the grade of the top of the curb hereinafter specified, when completed and set in place, are hereby established as follows, measured in feet and decimal parts of a foot aljoe the datum plane of the City of Evanston, to -wit: Transverse Section of Roadway. Crown Gutter Top of Line Line Curb Jackson Avenue: At south lot line of Lincoln St. 20.65 20.26 20.65 At one hundred eighty-five,(185) feet south of the south lot line of Lincoln Street 19.83 19.08 19.83 At two hundred ten (210) feet soutkx of the south lot line Lincoln Street 19.83 19.58 19.83 At ten (10) feet north of the north lot line of Colfax St. 19.05 18.30 19.05 At the north curb line of Colfax 19.25 18.80 19.05 Colfax Street: . At the west curb line of Jackson Av. 19.25 18.80 19.05 At :one hundred six (106) feet west of the west curb line of Jackson Av. 18.80 18.05 18.80 At two hundred six (206) feet west of the west curb line of Jackson Av, 19.25 18.75 19.00 At three hundred twenty-six (326) feet west of the west curb line:of Jackson Avenue 18.80 18.05 18.80 At the east curb line of Ashland Av. 19.50 19.05 19.30 Ashland Avenue: at the north curb line of Colfax St. 19.50 19.05 19.30 At ten (10) feet north of the north lot line of Colfax Street 19.25 18.56 19.25 At tvo hundred ten (210) feet north of the north lot line of Colfax St. 20.30 19.90 20.18 At two hundred thirty-five (235),feet north of the north lot line of Colfax Street 20.18 19.43 20.18 At the south lot line of Lincoln St. 21.45 21.00 21.35 JZ17178 ^Transverse Section of Roadway Alley two hundred (200) feet south of the south lot line of Lincoln St.: ,At the west curb line of Jackson Av. At west lot line of Jackson Av. At east lot line of Ashland Av. At the east curb line of Ashland Av. At the west curb line of Ashland Av. At the west lot line of Ashland Av. (a) Crown Gutter Top off Line Line Curb 4;7' 19.83 19.53 19.83 20.30 20.00 20.20 20.70 20.40 20.60 20.30 19.90 20.18 20.30 19.90 20.18 20.70 20.40 20.60 The grade of the crown line, gutter line and top of curb at intermediate points shall be respectively proportional to the foregoing. - The datum plane herein mentioned is the plane of low water mark of Lake Michigan in the year A.D. 1847, as established by the Trustees of the Illinois and Michigan Canal -and is 22.41 feet below the U.S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the northwest corner of Davis Street and Sherman Avenue, in said City of Evanston. , A,.,. ,.The crown line hereinbefore mentioned shall be identical with the center line of the respective roadways when completed. The gutter line hereinbefore mentioned shall be identical with the line where the surface of the roadways when completed touches the face of the curbing on both sides of the respective roadways. The surface of the roadways herein provided to be paved when completed shall conform to the are of a circle passing thrgQh the respective crown and gutter lines, and shall be true and symmetrical. GRADING Prior to laying down the pavement thereon, the roadways specified to be paved shall be cleaned in a thorough and workman- like manner of all debris and rubbish, such as deteriorated pave- ments, crossings, box drains, culverts, stumps, etc. The sub - grade shall be prepared by excavating the soil, or filling there- upon with other suitable soil to such depths and shapes as will insure the finished pavement being at the grade established therefor. Spongy earth that is unfit to be left in the sub -grade shall be re- moved by the contractor without extra charge. The sub -grade shall be rolled with a suitable roller or flooded with water, or both as may be found necessary and practi- cable to thoroughly compact same. Any depressions that may appear as the rolling or flooding of the sub -grade progresses shall be filled upon at the surface with suitable soil and thoroughly com- pacted as before specified. SURFACE DRAINAGE SEWERS For the purpose of carrying off storm waters from the surface of the pavement herein provided to be constructed, surface drainage sewers of vitrified, salt glazed, tile pipe shall be laid as' hereinafter specified. Said sewers shall be laid in open trenches in the ground in such manner as to conform to the elevations, lines and grades hereinafter specified. The pipe used in the construction of said sewers shall be of the type known as "Bell and Spigot" having an internal diameter of nine (9) inches, the metal of which pipe shall have a thickness ,of thirteen -sixteenths (13A6) of an inch and shall not be less than two (2) feet in length, cylindrical, straight, smooth, thorough- ly vitrified, salt glazed, free from cracks or blisters and of the best quality and workmanship. The joints between the pipes shall be securely sealed with a mortar composed by volume of one (1) part of Pcrtland cement 4-the best quality and one and one-half (l--) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The joints between said -pipes shall be wiped and pointed inside the pipes. The interior of the pipes 48 shall be kept free from dirt or refuse of every description and shall be left clean at the completion of the work. The open trenches excavated to receive said sewers, shall be -made at -least twelve (12) inches wider than the exterior diameter, of -the pipes so as to give at -least six (6) inches clearance on both sides of the pipes for sealing joints. The materials excavated shall be -kept compactly along the sides of the trench and shall be backfilled as soon as -practicable in,order to occasion the least possible incon- venience to the public in use of the street or alley as the case may be. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. The open and unconnected ends of said sewers shall each be securely closed with a salt glazed, vitrified tile disc, and sealed in the manner above specified for joints between pipes. Said sewer or sewers as the case may be shall be laid as follows, to -wit:' (1) In and along the center line of Colfax Street from and connecting with the sewer now in place along the center line of Colfax `Street thirty-one (31) feet east of A'bhland, thence west to the center line of Ashland Avenue, thence north along the center line of Ashland Avenue to a point ten (10) feet north of the north line of Colfax Street. The internal diameter of said sewer shall be nine (9) inches and the met6,1 of the pipe of which said sewer shall be constructed, shall be thirteen -sixteenths (13/16) of an inch. Said sewer shall be connected with the sewer now in place along the center line of Colfax Street thirty-one (31) feet east of Ashland Avenue. At its connection with the aforesaid sewer in Colfax Street, the elevation of the inside bottom of the sewer herein provided to be laid in Colfax Street and Ashland Avenue, shall be fourteen and seventy-two hundredths (14.72) feet above the datum plane hereinbefore defined and shall thence rise at a uniform rate to an elevation of fifteen and two -tenths (15.2) feet above said datum at its northern terminus. (2) In and along the center line of Ashland Avenue from and connecting with the sewer now in place along the center line of Ashland Avenue at the south line of Lincoln Street south to a point one hundred eighty-five (185) feet south of the south line of Lincoln Street. The internal diameter of said sewer shall be nine (9) inches and the metal of the pipe of which said sewer shall be constructed shall be thirteen -sixteenths of an inch. Said sewer shall be connected with the sewer now in place along the center line of Ashland Avenue at the south line of Lincoln Street at its connection with the aforesaid sewer in Ashland Avenue, the elevation of the inside bottom of the. sewer herein provided'to be laid in Ashland Avenue shall be fifteen (15) feet above the datum plane hereinbefore defined and shall rise thence at a uniform rate to an elevation of sixteen (16) feet above said datum at its southern terminus. CATCH BASINS For the purpose of receiving storm waters from the surface of the roadway or roadways, as the case may .be, herein provided to be paved eleven (11) catchbasins shall be constructed at the necessary points along the sides of the aforesaid roadway or roadways. Said catchbasins shall be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tope of the iron covers herein required for said catchbasins, when in place, to the upper surface of the proposed curbing. Said catch basins stall be cylindrical in shape having an internal diameter of forty-two (42) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by means of eight (8) header courses of brick laid endwise and horizontally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catchbasins. Said catchbasins shall have walls eight (8).inches thick, built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch basins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one(1) part of Portland cement of the best quality and one and one-half (1�) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch basins shall each rest on a 1Z19198 solid bottom of two (2) inch pine planks laid closely in single 4 9, thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular inform, and shall measure sicty (60) inches in diameter and shall have its upper side placed five and one-half (5-) feet below the upper surface of the brick wall for said catch basin. Said catch basin shall be con- nected with the sewer Dr sewers, as the case may be, now existing or herein provided to be constructed, as the case may be, in and along the center line of the said roadway or roadways at the side of which the respective catch basins are to be constructed. Said Catch basins shall be connected with the sewer or sewers aforesaid by means -of vitrified, salt glazed, tile pipe having an internal diameter of nine (9) inches and of the type known as "Bell and Spigot" the metal of which pipe shall be thirteen -sixteenths (13/16) of an inch in thickness and shall be not less than two (2) feet in length. Said pipe shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipes shall be securely sealed with a mortar of the quality herein required for brick walls in catch basins. Each catch basin connection shall start in a nine (9) inch vitrified, salt glazed, tile pipe "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the sewer at a point not less than six (6) feet in advance of the catchbasin, measured along and in the downstream direction of the sewer from a point on said sewer directly opposite the catch basin. The pipes shall be laid true to line and grade and the connection shall enter the catch basin at a point two and one- half (2*) feet above the brick walls thereof shall be an elbow with the bell end turned downward inside the catch basin to form a trap. The pipe shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materiels excavated shall be kept compactly along the sides of the trenches and shall be backfilled as soon as practicable in order to occasicn the least possible inconvenience to the public in the use of the street. The trenches shall be promptly backfilled to a depth of twelve (12),inches above the top of the pipes. Suitable soil shall be carefully packed under and arround the pipes. Said catch basins shall each be equipped and.fitted with a cast iron cover weighing not less than three hundred thirty (330) pounds and having a vertical, height of thirteen inches (13), which cover shall be of the same size and pattern or equal in size, quality and workmanship to the castiron covers now in use on exist- ing catch basins in.Dempster Street between Ridge Avenue and Dodge Avenue in said City of Evanston. Said catch basin.covers herein provided to be furnished and set shall rest on the walls of the catch basins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catch basins. The walls shall be built to such height as will bring the tops of the covers when in place, to the elevations hereinbefore specified for the top of the curb at the points where said catch basins are to be located. MANHOLES TO BE ADJUSTED AND BROUGHT TO GRADE The four (4) brick manholes now located within the space herein provided to be paved, and which are already equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said manholes as may be necessary to bring.the covers of the manholes to the height above specified and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1*) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imb.edded in a mortar of the kind and quality required for use in adjusting said walls. 50 VALVE CHAMBERS TO BE ADJUSTED AND BROUGHT TO GRADE. The one (1) brick valve chamber now located within the space herein provided to be paved, and which is already equipped with cast iron cover, shall have its cover raised or lowered, as the case may be, to bring the top thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said valve chamber as may be necessary to bring the cover to the height above specified, and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a mortar, composed by volume of one (1) art of Portland cement of the best quality and one and one-half (1j) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said cover shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. CONCRETE CURB A concrete curb shall be constructed on both sides of the respective roadways herein provided to be paved. Said curb shall consist of a mixture by volume, of on e� part of Portland cement, two -parts of sand and four parts of crushed gravel or stone. Except that the top and exposed roadway face of the curb shall be surfaced to a depth of one-half inch with a mortar composed of two parts of Portland cement and three parts of clean sharp sand of the sizes hereinafter specified for the sand to be used in making this curb. The crushed gravel or stone of the curb shall be clean, hard, free from dust, loam, vegetable or other deleterious matter and shall show sharp edged cubical fracturing; This crushed gravel or stone shall be of variable sizes, grading from a maximum dimension of one inch down to a minimum of one-fourth inch, and so proportioned that the particles capable of passing through a screen of three -fourths -inch mesh will fill the voids in the particles retained on such size screen, but without more than ten per cent excess of the smaller particles. The sand specified for the curb shall be free from clay, loam, vegetable or other deleterious matter. The grain shall be angulat, and shall range in size from one -quarter inch down to the finest, but not more than 3 per cent shall pass through a sieve having (100) one hundred meshes per lineal inch. The sand shall be of such quality that mortar composed of one part of the cement hereinbefore specified and three parts of the sand, by weight, when made into briquette, will develop a tensile strength at least equal to the strength of a mortar of the same con- sistency and proportions made with the same cement and Standard Ottawa sand. The Portland cement specified for the curb shall be of such quality that representative samples collected from the shipments made for the job shall be capable of passing the tests for fineness, sound- ness, initial setting, and tensile strength hereinafter set forth for Portland cement. The sand -and crushed gravel or stone shall be clean when delivered on the job and shall be kept clean until used. In no case shall the xand and crushed gravel or stone when used, contain frost or lumps of frozen matter. Forms shall be used in constructing the curb. The forms shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or other- wise held to the established lines and grades. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have previously been used. The ingredients specified for the body if the curb shall be mmxed in a batch micer of a type that will i.neure a uniform mixture and product. Clean water, free from oil, acid, alkali or vegetable matter shall be admitted to the mixer in sufficient quantity to produce a concrete of a consistency sugh that mortar will flush to the surface under light tamping, but which can be -or stone without causing a separation of the crushed grave l/TTom-ifie mortar. Provided, that on such portions of the work as it may be impracticable to use the machine mixer thorough and efficient hand mixing will be allowed. The equipment used, if any, for hand mixing shall be as specified for mixing the surfacing mortar. 1�i9198 The ingredients specified for the mortar to be used in surfacing the top and exposed roadway face of the curb shall be mixed on a movable, tight iron platform, of ample size to accomodate the manipulations specified, without getting the in- gredients off the platform or mixed with dirt. The Portland cement and sand specified for surfacing portions of the curb shall be thoroughly mixed on the platform with hoes or shovels, and until the color becomes uniform, after which sufficient water, of the quality hereinbefore required, shall be gently added, while the mixing continues to produce a stiff and homogeneous mortar. The concrete and the finishing mortar after being pre- pared as specified shall be promptly deposited and compacted in the forms, in layers not exceeding six inches in depth. The back of the curb shall be worked with a spade to secure a well filled surface. The front upper edge of the curb shall be rounded to a radius of one and one-half inches in such manner that the planes of the top and roadway face of the•curb will be tangent to the curve described by said radius. As soon as the cement has suf- ficiently set, the forms shall be removed from the face of the curb; and the face mortar shall be promptly troweled down hard and smooth, drawing the cement from the crushed gravel or stone as little as possible. The gloss shall be removed with a wet brush. The curb shall be constructed in sections not less than four feet nor more than six feet in length. In constructing the curb, all templates used to form the sections shall be kept per- pendicular to the top of the curb. All joints shall be neatly tool finished. The joint marking sha141 correspond to the joint made by the templates. The curb shall be twenty-four inches in depth, and the thickness shall vary uniformly from six inches at the top to eight inches at the bottom of the curb. The curb shall be built in such manner that the roadway face will be vertical;. that the top will be at the grade hereinbefore estab- lished; and that the back of the curb, at the top thereof shall be on the lines hereinbefore established. The curb at intersecting streets and alleys shall be constructed to true curves tangent to the intersecting curb lines proper. The adius of the curve to which the back of the curb shall conform shall be ten feet for intersecting street and six feet for intersecting alley curb lines. Except as above specified, for intersecting street and alley curb lines, the curb shall be con- structed at such distances from the center line of the roadways, herein provided to be paved, as will give the respective width of roadways hereinbefore specified and established, when measured from back to back of curb in the manner and on the lines herein - before set forth. Trenches shall be excavated to sufficient width and depth to receive the curb and necessary moulding frames. Where - ever other than sandy soil is encountered the curb trenehes shall be excavated to a depth of six inches below the bottom of the curb and shall be re -filled to such depth with sand or cinders. ,The sand or cinders shall be compacted with water or by hand tampers. The frames shall be securely fastened in place and shall be accurately brought to line and grade before they are filled•with concrete. The grade and line to which the frames are to be set shall be such as is necessary to insure the finished curb being true to the lines and grades hereinbefore established therefor. PORTLAND CEIMENT CONCRETE FOUNDATION Upon the sub -grade prepared as hereinbefore specified, shall be constructed a Portland cement concrete foundation, five (5) inches thick. The concrete shall be composed by volume, of one (1) part of Portland cement; three (3) parts of clean, hard grained, and sharp sand; and five (5) parts of clean, hard limestone or gravel broken or grades so as to yield a range of sizes (in longest dimension) from two (2) inches down to one- half W inch, and so proportioned as to produce a maximum number and minimum volume of interstices in the aggregate. 52 The concrete shall be prepared by mixing the cement, sand and stone or gravel in an approved batch mixer with suffi- cient clean water and mixing sufficiently to produce a plasticity best suited to the conditions of weather and soil. The concrete mixed as above specified, shall be promptly spread on the surface of the sub -grade to the required thickness, and to such shape and grade as will insure the upper surface of the foundation being thoroughl compacted by rolling or tamping, being parallel with and three (3T inches below the grade hereinbefore specified for the finished roadway. The upper surface of the foundation shall not be troweled smooth but shall be left moderately rough to grip the bituminous macadam pavement specified to be laid thereon. BITUMINOUS MACADAM PAVMLENT Upon the foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard, broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly s read, and in sufficient quantity to insure a thickness of three (33 inches thereof being spread on and used in•each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be evenly applied to the limestone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphalt cement in such quantities as to insure not less than one and three quarters (1-1) gallons thereof being evenly spread on and used in each and every square yard of the roadway, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size ranging from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes ones -fourth inch in diameter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screenings the roadway so covered, shall be given a thorough rolling with a roller of the weight and type.hereinbefore named. This rolling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the roadway shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be evenly applied to the surface of the pavement a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be- sufficient in quantity and so applied and spread as to insure not less than three quarters (3/4) gallon thereof being evenly spread and used on each and every square yard of roadway. Immediately after the second application of asphaltic cement is made and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, clean dry, hard granite chips of a size ranging from a maximum dimension of three - fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such manner and quantity,as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of the roadway. 1103198 A final rolling of the roadway shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named, The final rolling shall continue until the surface of the roadway is thoroughly compacted, and brought to a surface, free from depressions and true to from and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement herein`provided to be built, shall be filled, as the rolling continues, with the same, respec t ive kind of `stone as that on which the roller is operating. The gutter shall be kept trimmed to the required thickness and grade as the work progresses. The cubic yardage of stone, herein required, shall be verified by measurement of volume thereof in cars, or other con- veyances, transpofting same to said City, and prior to initial unloading, and shall be further verified by measured length of dumps and height of grade marks on the work. The stone shall be hauled on to the work in boxes of uniform size and contents and of such shape as to enable an easy and exact determination of the volume contained therein to be made on the site. The asphaltic cement used in the improvement herein pro- vided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following requirements and of passing the following tests, to -wit: (1). 'The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural asphalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so prepared for use as to best adapt it to the climatic and traffic conditions of the roadway on which it is to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. ` (3). It must have a penetration between 5 and 10 milli- meters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 grams for one minute. 53. (4) It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its pro- ducts, or other injurious matters, and the various hydrocarbons composing it shall be present in homogeneous solution, no granular constituent being present. (5) It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6) 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7). It shall be soluble in chemically pure carbon disul- phide at air temperature to the extent of at least 95%. (8) " Of the b71tuinen7 of the asphaltic cement which is soluable 'in '_carbon' disulphide at least 98*%5 shall be soluble in cold carbon tetrachloride. (9) The bitumen of the cement shall be soluble in 75 degrees Baume petroleum naptha, at the air temperature to the extent of not less than 72 per cent. (10) Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or resi duet coke. 54 BRICK All brick to be used in constructing catch basins and manholes and in adjusting catch basins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid iri the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per°cent, by weight, of clay. Said sand, when dry, shape pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, -and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at,least equal to the tensile strength of a mortar of the same consistency and pro- portion, made with the same cement and s tandard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed lime stone or gravel to be used in the improve- ment herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone c.antaining frost or lumps of frozen matter be used. PORTLAND CETIENT The Portland cement to be used in the improvement herein provided to be made shall be of such quality that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength, to -wit: Fineness. The cement shall be so ground that 925 will pass through a standard sieve, having 10,000meshes and 75P will pass through a sieve having 40,000 meshes p-er square inch. Soundness A pat of neat cement, three and -one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, protected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquette bf the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting The cement, when mixed with twenty-eight per cent (by weight) of v►a.ter, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: i Neat cement Aye Strength 2f hours in moist air . 175 lbs. 7 days (1 day in moist air, 6 days in water) 500 lbs. 28 days (1 day in moist air, 27 days in water). 600 lbs. One Part Cement. Three Parts'Standard Ottawa Sand 7 days (1 day in moist air, 6 days in water) . 200 lbs. 28 days, (1 day in moist air,' 27 days in water) 0 0 0 �275' lbs. 1Z19198 The briquette shall show no retrogression in strength within the period specified. W Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cemetn delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. The tile pipe to be used in the improvement herein provided tc.be made shall be of the bell type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would rencer it unfit for the service or load that would be imposed upon it from within or without. Said pipe. shall give a clear ring when lightly struck with a mason's hammer. Said pipe,shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows; For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13/16) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All material used in the construction of the improve- ment hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all the necessary ;abor shall be performed in a good and workmanlike manner. The entire improvement • here-inbefo=e provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. SECTION 2. That the recommendation of the Board of Local Improvements of the City of Evanston providing for said improvement together with the estimate of the cost thereof made by the Engineer of said Boord, both hereto attached, be and the same are hereby approved. SECTION 3. That said improvement shall be made and the whoel cost thereof including the sum of One thousand two hundred ejighty-eight and 68A OO dollars ($1,288.68) being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A.D. 1897, and the amendments thereto, and that the said sum of One thousand two hundred eighty-eight and 68AOO dollars ($1,288.68) shall be applied toward the cost of making, levying and collecting such assessment. SECTION 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into ten installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per certum per annum according to law until paid. M SECTION 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the.City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the provisions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improvements", approved June 14th, A.D; 1897, and the amendments thereto. SECTION 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner prescribed by law. SECTION 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. SECTION 7. This ordinance shall be in force from and after its passage. a Adopted by the City Council of the City of Evanston on the 6th day of June A. D.1 922. Approved: June a, 1922. John F. Hahn, H.P. Pearsons, City Clerk Mayor. 57 BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That the next regular meeting of the City Council be held in the Council Chamber in the City Hall, Evanston, Illinois, on Wednesday, July 5, 1922 at 8 otclock P.M. instead of on Tuesday, July 4, 1922, on account of the fact that July 4th is a holiday, SECTION 2. That the City Clerk notify the Mayor and all Aldermen, at least five days in advance of said meeting, of the change in the date thereof, as herein provided. SECTION 3. This ordinance shall be in effect from and after its passage and approval, according to law. Adopted by the City Council of the City of Evanston on the 20th day of June A.D. 1922. Approved.; June 21, 1922: John F. Hahn, H.P. Pearsons, City Clerk. Mayor. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That the Public Alley eight (8) feet in width, in the City of Evanston, Cook County, Illinois, lying east of and adjoining lots one to eight, both inclusive, in Block One (1), lots one to nine, both inclusive, in Block eight and lots one to five, both inclusive, in Block nine in Hinman's Addition to Evanston, as dedicated by the plat of said addition, said plat having been filed for record October 13th, 1874 in the office of the Recorder of Deeds of Cook County, Illinois, and entered in Book 9 of plate, page 14, as document 195527, be and the same is hereby vacated, as the same has never been used by the public or adjacent property owners for the purposes of a public alley, and the interests of the City of Evanston will be subse rued by such vacation. , SECTION 2. That plat hereto attached, showing in red coloring,.and indicating by the words, "Hereby Vacated", the property vacated is hereby approved and made a part of this ordinance and the City Clerk is hereby directed to certify the same as such. SECTION 3. This ordinance shall be in full force and effect from and after its passage and approval and the filing in the office of the Recorder of Deeds of Cook County, Illinois, of a certified copy of this ordinance, to which is attached a plat showing property vacated. \ 0 Adopted by the City Council of the City of Evanston on the 20th day of June A.D. 1922. 0� K Approved: June 21 1922 John F. Ha 1 PP o '� � H.P. Peareons, .City Clerk. (Y� Mayor. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVAN STON,ILLINOIS: SECTION 1. That the resolution adopted by the City Council on April 17, 1917, accepting an ordinance adopted by the Board of Trustees of The Sanitary District of Chicago on March 8, 1917, entitled: "An Ordinance granting the right, privilege and authority to the City of Evanston to construct, maintain; repair and operate a sewer across the right-of-way of The Sanitary District of Chicago" be and the said resolution hereby is repealed. SECTION 2. That the ordinance adopted by said Board of Trustees of The Sanitary District of Chicago on June 1, 1922, granting to the City of Evanston the right, privilege and authority to construct a sewer of five (5) feet internal diameter, together with an outfall eight (8) feet wide for said sewer to connect with the North Shore Channel of The Sanitary District of Chicago upon, under and through a strip of land twenty (20), feet in width, lying within that portion of the right-of-way of the North Shore Channel of The §ahitary District of Chicago, lying Northwesterly,of the North Shore'Channel at Emerson Street, in the Township,of Niles, in the County of Cook and State of'Illinois, be, and the said ordinance hereby is accepted by the City of Evanston; and that the City Clerk be and he is hereby authorized and directed to file a certified copy of thi's ordinance with the Clerk of The Sanitary District of Chicago within ten days after the passage hereof. SECTION 3. This ordinance shall be in full -force and effect from and after its passage and approval, according to law. Adopted by the City Council of the City of Evanston on the 20th day of June A.D. 1922. Approved; June,21, 1922;. John F. Hahn, H.P. Pearanns, City Clerk. Mayor AN ORDINANCE Amending Section 2495 of the Evanston Code of 1915 and prescribing penalties for a violation of any of its provisions. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF tVANSTON: SECTION 1. That Section 2495 of the Evanston Code of 1915, adopted by the City Council March 26, 1915, be and the same hereby is amended so that the same shall hereafter read and be as follows: 2495. Hotel Keeper, Etc. To Keep Receptacles for Ashes and Garbage and Remove Contents) It shail be the duty of every person, firm or corporation occupying, operating or con- trolling any hotel, restautant, boarding house, apartment house or flat building or building in which business of any kind what- soever is conducted for profit, or portion thereof,,within the City of Evanston, in which ashes and other waste arising from combustion or garbage and waste material of any sort whatever are produced therein, or upon the premises used in connection therewith, at his or its own expense solely, to remove or cause the same to be removed from the said buildings and premises, at such times and in such manner as the Commissioner of Streets may direct and not to use, in,connection with said buildings or premises or portions thereof any receptacle for,ashes provided for domestic use. Provided that all garbage shall be placed in proper metallic cans which shall be practically air and water -tight, and shall be removed daily from such buildings and premises, or portions thereof, and shall be disposed of either by burning in a properly constructed crematory which shall have been approved by the Street Commissioner, or by,dumping the.same at any dumping ground or place where garbage is dumped or deposited by the City under the direction and supervision of the Street Commissioner; and provided further that this section shall not apply to any apartment house or flat building containing less than five apartments or flats. SECTION 2. Any person, firm or corporation who shall violate, fail or refuse to comply with any 9f the provisions or re- quirements of this ordinance, shall be,fined,not less than Ten ,Dollars nor more than Three Hundred Dollars for each offense, and a separate and distinct offense shall be considered as having been committed for each and every day on which any person, firm or cor- poration shall be guilty -of any such violation, failure or refusal to com-cly with any of the provisions or requirements of this ordinance,. IZ 0198 59 SECTION 3. This ordinance shall be in full force and effect from and after its passage, approval and publication, according to law. Adopted by the City Council of tiae City of Evanston on the 5th day of July A.D. 1922. Approved: July 6th, 1922. John F. Hahn, H.P. Pearsons, City Clerk. Mayor. Published in News -Index July 7, 1922. AN ORDINANCE Amending. Sections 1318 and 1489 of the Revised Plumbing Code of the City of Evanston, Illinois, adopted by the City Council of the City of Evanston, Illinois, March 19, 1918. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON, ILLINOIS: SECTION 1. That Section 1318 of the Revised Plumbing Code of the City of Evanston, Illinois, adopted by the City Council of the City of Evanston, Illinois, March 19, 1918 be and the same is hereby amended to read as follows:: The plans and drawings filed with the Department of Buildings shall show the entire sewerage, drain, soil, waste, vent and supply pipes and the location of plumbing fixtures and such other details as may be required within the building or structure. In submitting plans for additional or reconstruction work, the old or original work shall, be indicated in black or blue lines and the new addition3lor reconstruction work by red lines. All sizes of pipes and traps shall be plainly marked. SECTION 2. That Section 1489 of the Revised Plumbing Code of the City of Evanston, Illinois, adopted by the City Council of the City of Evanston, Illinois, March 19, 1918, be and the same is hereby amended to read as follows: Refrigerator or Ice Box Wastes) The waste pipe from a refrigerator or ice box shall not be directly connected with any soil, rain or waste pipe, or with the drain or sewer, or, discharge upon the ground. It shall discharge into an open, water supplied and properly connected enameled iron sink placed not more than three and one-half (3*) feet above the basement floor, or may discharge into a basement floor drain provided with an approved backwater valve and supplied.with water through a faucet set over drain, such sink or drain shall be located in a well lighted and ventilated room. The waste ripe shall be as short as possible and disconnect from the refrigerator or ice box by at least two (2) inches and from the floor drain by at least six (6) inches; and where refrigerators or ice boxes are placed in buildings and upon two (2) or more floors, the waste and vent pipe thereof shall be continuous and shall run through the roof and in no case shall it open within six (6) feet of an open soil or vent pipe. Where there is an off set or change of diregtion on a refrigerator waste pipe in the basement there must be clean -outs to control the horizontal part of the pipe. The size of waste pi e for refrigerators for two (2) floors shall be one and one-half (1J5 inches, and for three (3) to five (5) floors shall be at least two (2), inches and two and one-half (2-J) inches for five (5) floors and over. Each refrigerator or ice box shall be provided with a suitable trap with an accessible trap screw or clean -out. Such trap shall be placed in the one and one- half (1j) inchwaste pipe and shall be'near the refrigerator or ice box. Such traps need not be separately revented. The stack need not be increased at the roof line. ` SECTION 3. All penalties provided for in the said Revised Plumbing Code of the City of Evanston, Illinois, adopted by the City Council of the City of Evanston, Illinois, March 19, 1918, for a violation cf any of the provisions or requirements of the sections • '� herein amended shall be applicable to the appropriate sections as amended herein. SECTION 4. All ordinances or parts. of ordinances in conflict with any of the provisions of this ordinance are hereby repealed. ,SECTION 5. This ordinance shall be in effect from and after its passage, -approval and publication ecording to law. Adopted by the City Council of the. City .of Evanston on the 5th day of July A.D. 1922, Approved: July 6th, 1922. John F. Hahn, H.P. Pea.rsons, City Clerk. Mayor. Published in News -Index July 7, 1922. AN ORDINANCE Amending an Ordinance entitled::"An Ordinance to classify, regulate and restrict the locations of trades and industries and the location of buildings designed for specified uses and to regulate and limit the height and bulk of buildings hereafter erected, to regulate and limit the intensity of the use of lot areas and to regulate and determine the area of yards, courts and other open spaces within and surrounding such buildings, and to establish the boundaries of districts for the said purposes, and prescribing penalties for the violation of its provisions", by classifying on the "Use Map" and on the "Area )dap" of said ordinance, adopted January 18th, 1921, as a "C" Commercial District and a "C" Area District, instead of a "B" Residence District end an "A" Area District, certain described property and prescribing penalties for the violation of i,ts provisions. , BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON, ILLINOIS: SECTION 1. That the ordinance entitles "An Ordinance to classify, regulate and restrict the locations of trades and industries and the location of buildings designed for specified uses and to regulate and limit the height and bulk of buildings hereafter erected, to regulate and limit the intensity of the use of lot areas and to regulate and determine the area of yards, courts and other open 'spaces within and surrounding such buildingsi,and to establish the boundaries of districts for the said purposes, and prescribing penalties for the violation of its provisi ons", adopted by the City Council of the City of Evanston, Illinois, on January 18th, 1921, be and the same hereby is amended as hereinafter set forth. SECTION 2. That the district described as lot seventeen (17) in block four (4), Section thirteen (13), Township forty-one (41 North, Range thirteen (1 3) East of the Third principal meredian in McNeil's Addition to Evanston in the City of Evanston, Cook County, Illinois, otherwise known by street and house numbers as 1825 and 1827 Emerson Street and 1901 to 1911, both inclusive, podge Avenue, be and the same is hereby changed from a "B" Residence District and an "A" Area District to a "C" Commercial District and a "C" Area District respectively. SECTION 3. The penalties provided for in the said ordinance adopted January 18th, 1921, for a violation of any of its regulations and restrictions and applicable to "C" Commercial Districts and "C" Area Di stricte, •shall be applicable to said ordinance as herein amended. SECTION 4. All ordinances or parts of ordinances in conflict with any of the provisions of this ordinance are hereby repealed. SECTION 5. This ordinance shall be in effect from and IZ0198 C1 after its passage, approval and publication according to law. Adopted by the City Council of the City of Evanston on the 5th day of July A.D. 1922.- Approved: July 6th; 1922. John F. Hahn, H.P. Pearsons, City Clerk Mayor. Published in News Index July 7, 1922. RECOAUZENDATION, ESTIMATE AND ORDINANCE. RECOMLCENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: We here*ith submit an ordinance providing for a system of combined storm water and house drainage sewers including a concrete bulkhead and a special manhole at the outfall of said sewers and including manholes, catch basins and "Y" branches for house and catch basin connections in the following described streets and right -of way, to wit: (1) An outlet sewer of five (5) feet internal diameter made of vitrified, salt glazed, tile segmental block, provided with a reinforced concrete bulkhead (equipped with a special manhole) at the outfall of said sewer andextending in a straight line along the line of said sewer produced to connect said sewer with the North Shore Channel of Thej Sanitary District of Chicago, including necessary manholes, to`be con- structed from its connection with said outfall along a line drawn fifty (50) feet Northeasterly from and parallel to the center line of that certain Public Highway in the Township of Niles in Cook County, in the Northeast one-quarter(j) of Section Fourteen (14), Township Forty -One (41) North, Range Thirteen (13) East of the Third (3rd) Principal Meridian, as shown on the plat of the County Clerk's.Division of said Northeast one -quarter (j), said plat being filed for record April 30, 1879 in the office of Recorder of,Deeds in Cook County, Illinois, and entered in Book of Plats 14, page 52 as Document number 220,114, said Public Highway being commonly called EMERSON ROAD or EMERSON STREET, to a point fifty (50) feet from (measured at right angles thereto) the westerly right-of-way line of said North Shore Channel of The Sanitary District of Chicago, thence in a straight line to a point in the Wester- ly right-of-way line of said North Shore Channel of The Sanitary District of Chicago, twelve (12) feet Northeasterly (measured at right angles there- to) from the center line of said EMERSON ROAD or STREET; thence along a line Northeasterly of and twelve (12) feet from center line of said EMERSON ROAD or STREET and the same extended to a point twelve (12) feet North of the South line of Section Eleven (11), Township forty-one (41) North, Range thirteen (13) East of the Third (3rd) Principal Meridian,, (2) A combined storm water and house drainage sewer in said City of Evanston_, made of vitrified, salt glazed, tile segmental block having an internal diameter of five (5) feet, connecting with the last named sewer and extending west therefrom along a line twelve (12) feet north of and parallel to the south line of said Section eleven (11) to a point eight (8) feet west of the line between the east and west -one- half(--) of said Section eleven (11). (3) A combined storm water and house drainage sewer in said City, made of vitrified, salt glazed, tile segmental block, connectin with the last named sewer and extending therefrom along a line eight �8) feet west of and parallel to the line between the east and west one-half (�) of said Section eleven (11), north to the south line of CENTRAL STREET in said City. Tze internal diameter of said sewer to be as follows, from its connection, with the last named sewer north to the north line of the southeast one -quarter (-J) of the mouthwest one -quarter (-J) of said Section eleven (11), four (4) feet, from the last named point to the south line of said CENTRAL STREET, forty-two (42) inches. (4) A combined storm water and house drainage sewer in said City, made of vitrified, salt glazed, tile segmental block, connecting with the last named sewer at the south line of said CENTRAL STREET and extending 62 therefrom in a straight line to a point being the intersection of the center line of said CENTRAL STREET with the center line (extended south) of CENTRAL PARK AVENUE north of said CENTRAL STREET and extending NORTH therefrom along said last named center line to the center line of PARK STREET. The internal diameter of said sewer to be as follows: from the south line of said CENTRAL, STEEET to -the center line of said CENTRAL STREET, forty-two (42) inches. From the center line of said CENTRAL STREET to the center line of said PARK STREET, thirty-six (36) inches. (5) A combined storm water and house drainage sewer in said City, made of vitrified, salt glazed, tile pipe, connecting with the last named sewer and extending thence north along the center line of said CENTRAL PARK AVENUE to the north limits of the City of Evanston. The internal diameter oft his sewer to be as follows, from its connection with said last named sewer to the center line of THAYER STREET as ex- tended from the west of CENTRAL PARK AVENUE,. thirty (30) inches. From the center line of "THAYER STREET as extended from the west of CENTRAL PARK AVENUE to the north limits of the City of Evanston, twenty (20) inches. Together with an estimate of the cost of such improvement and re- commend the passage of said ordinance and the making of the improvemnet conteViplated therein. Respectfully submitted, H. P. PEARSONS, TM BLANCHARD, HAL SMITH, Board of Local Improvements of the City of Evanston. Dated, Evanston, Illinois. June 20th, 1922. ESTIMATE OF 11MGINEER OF BOARD OF LOCAL IMPROVEM1,'NTS. To the Mayor and Aldermen of the City of Evanston in -the City Council Assembled: The Board of Local Improvements of the City of Evanston having Adopted a resolution for a system of combined storm water and house drainage sewers including a concrete bulkhead`a,nd a special manhole at the outfall of said sewers and including manholes, catch basins and "Y" branches for house and catch basin connections in the following described streets and right-of-way, to wit: (1) An outlet sewer of five (5) feet internal diameter made of vitrified, salt glazed, tile segmental block, provided with a reinforced concrete bulkhead (equipped with a special manhole) at the outfall of said sewer and extending in a straight line along the line of said sewer produced to connect said sewer with the North Shore Channel of The Sanitary District of Chicago, including necessary manholes, to be constructed from its connections with said outfall along a line drawn fifty (50) feet North- easterly from and parallel to the center line of that certain Public High- w!Y) in the Township of Niles in Cook County, in the Northeast one -quarter of Section Fourteen (14), Township Forty -One (41) North, Range Thirteen 13) East of the Third (3rd) Principal Meridian, as shown on the plat of the County Clerk's Division of said Northeast one -quarter (V ,-said plat being filed for record April 30, 1879 in the office of the Recorder of Deeds in Cook County, Illinois, and entered in Book of Plats 14, page 52 as Docu- ment number 220,114, said Public Highivay being commonly called EMERSON R04D or EMMERSON STREET, to a point fifty (50) feet from (measured at right angles thereto) the westerly right-of-way line of said North Shore Channel of The Sanitary District of Chicago, thence in a straight line to a point in the Westerly right-of-way line of said North Shore Channel of The Sanitary District of Chicago, twelve (12) feet Northeasterly (measured at right angles thereto) from the center line of said EMERSON ROAD or EMERSON STREET; thence along a line Northeasterly of and rwelve (12) feet from center line of said EMERSON ROAD or STREET and the same extended to a point twelve (12) feet North of the South line of Section Eleven (11), Township. forty-one (41) North, Range thirteen (13) East of the Third (3rd) Principal Meridian. (2) A combined storm water and house drainage sewer in said City of Evanston, made of vitrified, salt glazed, tile,segmental block having an tZ 19198 63 internal diameter of five (5) feet, connecting with the last named sewer and extending west therefrom along a line twelve (12) feet north of and parallel to the s,uth line of said Section eleven (11) to a point eight (8) feet viest of the line between the east and west one=half (�) of said Section eleven (11). (3) A combined storm water and house drainage sewer in said City, made of vitrified, salt glazed, tile segmental block, connecting with the last named sewer and extending therefrom along a line eight (8) feet greet of and parallel to the line between the east and west one-half W of said`Section eleven '(11), north to -the south line of CENTRAL STREET in siad City. The internal diameter of said surer to be as follows, from its connection with the last named sewer north to the north line of the southeast one -quarter (f) of the southwest one-quarter(j) of said Section eleven (11), four (4)"feet, from the last named point to the south line of said CENTRAL STREET, forty-two (42) inches. (4) A combined storm water and house drainage sewer in said City, made of vitrified, salt glazed, tile segmental block, connecting with the'last named sewer'at the south line of said CENTRAL STREET and extend- ing therefrom in a straight line to a point being the intersection of the center 1_ne of said CENTRAL STREET with the center line (extended south) of CENTRAL PARK AVENUE north of said CENTRAL STREET and extending NORTH therefrom along said last named center line to the center line of PARK STREET. The inte `real ' diameter • of said ' sewer to 'be as follows: .from the south line of said CENTRAL STREET to the center line of said CENTRAL STREET, forty-two (42)-inches. From the center line of said CENTF.JL STREET to the center line of said PARK STREET, thirty-six (36) inches. (5) A combined storm water and house drainage sewer in said City, made of vitrified, salt glazed, tile pipe, connecting with the last named sewer anc extending thence north along the center line of said CENTRAL PARK AVENUE to the north limits oft he City of Evanston. The internal diameter of this sewer to ,be _as follows, from its connection. with said last named sewer'to the center line of THAYER STREET as extended fro m the west of CENTRAL PARK AVENUE, thirty (30) inches. Prom the center line of THAYER STREET as extended from the west of CMTTRAL PARK AVENUE to the north limits of the City of Evanston, twenty (20) inches. And presented to the City Council of the City of Evanston, a re- commendation that such improvement be made I hereby submit an estimate of the cost of such improvement including, labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making and. collecting. the, assessment, as provided by law, viz: ESTIMATE OF COST. 80 Lin. ft. of reinforced concrete bulkhead at outfall of outlet sewer, including excavation and backfilling (average depth of cut twenty(20)feet) complete in place @ $90.00 per tin. ft.......................... 7#200.00 2940 Lin. ft. of 601' internal diameter vitrified, salt glazed, tile, 'segmental block sewer, including nec- essary "Y" branches for•house and catch basin con- nections, excavation, backfilling and removal of surplus excavation (average depth of cut twenty (20) feet) complete in place @ $29.00 per lin. ft....... $ 85,260.00 1375 Lin. ft. of 48" internal diameter vitrified, salt glazed, tile segmental block sewer, including nec- essary "Y" branches for house and catch basin con- nections, excavation and backfilling average depth, of cut 182 feet) complete in place @ ilg.00 per linft.26,125.00 2000 Lin. ft, of 42" internal diameter, vitrified, salt glazed, tile segmental block sewer, including nec- esoary "Y" branches for house and catch basin con- nections, excavation and backfilling average depth of cut 15J feet) complete in place @ 17.00 per lin ft...........................................0...... 34,000.00 70.0 Lin. ft. of 36" internal diameter, vitrified, salt glazed, tile segmental block sewer, including nec- essary "Y" branches for house and catch basin con- nections, excavation and backfilling (average depth of cut 14 feet) complete in place @ $14.00 per lin ft. 9,800.00 64 400 Lin. ft. of 30" internal diameter vitrified, salt glazed, tile pipe sewer, including necessary "Y" branches for house and catch basin connections, excavations and backfilling (average depth of cut-13 feet) complete in place Q$10.00 per lin. ft...$ 4,000.00 650 Lin. f t. of 20" internal diameter, vitrified, salt glazed, tile pipe sewer, including necessary "Y" branches for house and catch basin connections, ex- cavation and backfilling (average depth of cut 13 feet) complete in place @ $5.00 per lin.ft......... $ 3,250.00 1 Special manhole to be conctructed in connection with bulkhead and equipped with circular cast iron cover, complete in place ..................... 100.00 8 Brick manholes equipped with•circular, cast iron covers, complete in place, including excavation and back- fillin (for sewers having an internal diameter of 6011) @ 95.00 each............ ......:............:. 760.00 2 Brick manholes equipped with circular, cast iron covers complete in place, including excavation and backfilling (for sewers having an internal diameter of 48 inches) @$85.00 each ....................... $0 170.00 4 Brick manholes equipped with circular, cast iron covers, complete in place, including excavation and backfilling (for sewers having an internal diameter of forty-two inches) © $75.00 each................. Q 300.00 2 Brick manholes equipped with circular, cast iron covers, complete in place, including excavation and backfilling (for sewers having an internal diameter of thirty-six inches) Q $65.00 each ................ 130.00 2 Brick manholes equipped with circular, cast iron covers, complete in place, including excavation and backfilling' (for sewers having an internal diameter of thirty N ) inches Q $60.00 each................ $ 120.00 2 Brick manholes equipped with circular, cast iron covers, complete in place, including excavation and backfilling (for sewers having an internal diameter of -twenty inches) 9 $60.00 each.................... $p 120.00 39 Brick catch basins including connections to sewers circular cast iron covers, plank -floors, excavation and backfilling complete in place @$`p70.00 each..... $p - 2, 730.00 For lawful expenses attending the proceedings for making said improvement,arid the cost of making and collecting the assessment, therefor, not to exceed six per centum (6%) of the above, to -wit: $174,065.00 ................ $• 10;443.90 Total........... $ 184,508.90 And I hereby certify in my opinion the above estimate does not exceed the probable cost of the above proposed improvement and the lawful expenses'attending the sAme. 'Dated, Evanston, Illinois, June 20th; 1922. WM. BLANCHARD. . . . . . . . Engineer. . . of. the Board. . of. Local Im- provements of the City of Evanston. AN ORD INANCE . Providing that a system of combined storm water and house drainage sewers be constructed in the City of Evanston, Cook County, Illinois, also in a part of EICERSON ROAD or STF=,• 'and in a part of 'the Right- of-T-lay of the North Shore Channel of The Sanitary District of Chicago, in the Township of Niles, Cook County, Illinois. BE IT OPMAINED BY THE CITY COUNCIL OF THE CITY OF EsTANSTON: SECTION 1. That a local improvement shall be made within the City IZ01198 W of Evanston, Cook County, Illinois, also in a part of EIERSON, ROAD or STREET, and in a part of the RIGHT-OF-WAY of the North Shore Channel of The Sanitary District of Chicago, in the Township of Niles, Cook County, Illinois, the nature, character, locality and description of which local improvement is as follows, to -wit: (1) An outlet sewer of five (5) feet internal diameter made of vitrified, salt glazed, tile segmental block, provided with a rein- forced concrete bulkhead, (equipped with a special manhole) at the outfall of said sei°.er and extending in a straight line along the line of said sewer produced to connect said sewer with the North Shore Channel of the said The Sanitary District of Chicago, including neces- sary -manholes, shall be constructed from its connection with said out - fall along a line drawn fifty (50) feet Northeasterly from and paral- lel to the center line of that certain Public Highway in the Township of Niles, in said County, in the Northeast one-quarter(4) of Section Fourteen (14), Township Forty -One (41) North, Range Thirteen (13) East of the Third (3rd) Principal Keridian, as shown on the lat of the County Clerk's Division of said Northeast one -quarter W, said plat being filed for record April 30, 1879 in the Office of Recorder of Deeds in Cook County, Illinois and entered in Book of Plats 14, page 52 as document number 220,114, said Public Highway being -common- ly called EI)ERSON ROAD or EMERSON STREET, to a point fifty (50) feet from (measured at right angles thereo) the westerly right -of-way line of said. North Shore Channel of The Sanitary District of Chicag6, thence in a straight line to a point in the Westerly right-of-way line of said North Shore Channel of The Sanitary District of Chicago twelve (12) feet Northeasterly (measured at right angles thereto) from the center line of said EMERSON ROAD or STREET; thence along a line Northeasterly of and twelve (12) feet from the center line of said EIMPSON ROAD or STREET and the same extended, to a point twelve (12) feet North of the South line of Section Eleven (11) Township FortyOne (41) North, Range Thirteen (13) East of the Third Ord) Principal Meridian.. . The elevation of the bottom of the inside of said outlet sewer at its junction with said bulkhead shall be two and sixty-eight one hundredths (2.68) feet above the datum plane of said City of Evanston (hereinafter referred to as said datum) and the grade thereof shall thence rise at a uniform rate to an elevation of seven and six one - hundredths (7.06) feet above said datum at the Northwesterly terminus of said outlet sewer. (2) A combined storm water and house drainage sewer of five (5) feet internal diameter made of vitrified, salt glazed, tile segmental block, including necessary "Y" branches for house and catch basin con- nections and including necessary manholes and catch basins, shall be constructed in. the City of Evanston connecting with the last named out- let sewer, along a line twelve (12) feet north and parallel to the south line of said Section eleven (11) to a o. t eight (8) feet west of a line between the east and west one-halfp(-�) of said Section eleven (11). The elevation of the bottom of the inside of said sewer at its connection with said outlet sewer shall be seven and six one -hundredths (7.06) feet above said datum and the grade thereof shall thence rise at a uniform rate to an elevation of eight and twenty-two one hundredths (8-22/100) feet above said datum at the terminus of said sewer. (3) A combined storm water and house drainage sewer made of� vitrified, salt glazed, tile segmental block, including necessary "Y" branches for house and catch basin connections and including -nec- essary manholes and catch basins, shall be constructed in the said City of Evanston, connecting with the last named sewer, along a line eight (8) feet west of and parallel to the line between the east one-half and the west one-half of said Section eleven (11) to the south line of CEITTRAL STREET. The internal diameter of said sewer shall be as follows, fromits connections with the last named -sewer to the North line of the Southeast one -quarter (1) of the Southwest one-quarter(J) of said Section eleven (11) four (41 feet, from the last named point to the south line of CENTRAL STREET, forty-two (42) inches. The ele- vation of the bottom of the inside of said sewer at its connection with the last named sewer shall be eight and tv�enty-two one hundredths (8-22/100) feet above said datum and the grade thereof shall thence rise at a uniform rate to an elevation of ten and eighty-six one-hun- dred6s (10-86/100) feet above said datum at the north line of the South- east one -quarter (4) of the South west one -quarter (J) of said Section eleven (11) and dhall thence rise at a uniform rate to an elevation of fifteen and ninety-one one -hundredths (15-91/100) feet above slid datum at the south line of said CENTRAL STREET. A t9 (4). A combined storm water and house drainage sewer made of vitrified, salt glazed, tile segmental block, including necessary " "Y" branches for house and catch basin connections and including , necessary manholes and catch basins, shall be constructed in said City of Evanston, connecting with the last named sewer at the south lineof said CENTRAL STREET and extending therefrom in a straight line to a point being the intersection of the center line of said CWMIRIL STREET with the center line extended sDuth of CENTRAL PARK AVENUE north of said CENTRAL STREET and extending north therefrom along said last named center line to the center line of PARK STREET. The internal diameter of said sewer shall be as follows, from the south line of said CENTRAL STREET to the center line of said CENTRAL STREET; forty- two (42) inches, from the center line of said CENTRAL STREET to the center line of said PARK STREET, thirty-six (36) inches. The elevation of the bottom of the inside of sgid sewer at its connection with the said last named sewer shall be fifteen and. ninety- one one -hundredths (15-91/100) feet above said datum and the grade there- of shall thence rise.at a uniform rate to an elevation of seven -teen and nine -tenths (17 9/10) feet above said datum, at the terminus thereof. (5). A combined storm water and house drainage sewer made of vitrified, salt glazed, tile pipe including necessary "Y" branches for house and catch basin connections and including necessary manholes and catch basins shall be constructed in said City of Evanston, connecting with the last nained setrer at the terminus thereof, and extending there- from along the center line of said CENTRAL PARK AVENUE to the north limits of said City 6f Evanston. The internal diameter of said sewer to be as follows; from its connection with the last named sewer to the center line of THAYER STREET as extended from the west of said CINT RAL PARK AVENUE, thirty (30) inches. From said center line of said THAYER STREET to said North limits, twenty (20) inches. The elevation of the bottom of the inside of said sewer at its connection with the last named sever shall be seventeen and nine -tenths (17-9/10) feet above said datum and shall thence rise at a uniform rate to an elevation of nineteen and eighty-six one -hundredths (19-86/100) feet above said datum at the terminus thereof. 1:1 Is 5 a. RM, D The outlet sewer hereinbef ore specified to be constructed shall be provided with a reinforced concrete bulkhead at the outfall of said sewer at its connection with the North Shore Channelof The Sanitary District of Chicago, the extreme length of which bulkhead shall be eighty(80) feet. Eight (8) lines ofty:isted soft steel bars having an elastic limit of not less than fifty thousand (50,000) pounds per square inch and an original cross section of one (1) square inch shall be im- bedded in the concrete parallel to the longitudinal axis of the bulk- head and shall extend the entire length of the bulkhead as shown on plans therefor. All the concrete used in the construction of said bulk- head shall be composed of the best quality of Portland cement; clean sharp sand and the best quality of clean sharp crushed limestone. The concrete shall be thoroughly mixed, well wetted with clean water and put in place compactly in smooth forms. The entire manipulations shall be made in such manner and times as will insure a uniform, dense strong mass. Said. concrete shall be composed, by volume, of one (1) part of said cement, two (2) parts of said sand and four (4) parts of said lime- stone. The said limestone shall be crushed to such size that All parti- cles will pass through a sieve of one (1) inch mesh but be retained on a sieve of one-fourth (I) inch mesh. The broken limestone shall be so proportioned as regards range in sizes, that theparticles passing through a sieve of one-half (f) inch mesh will fill the voids of the particles retained on such sieve without more than ten per cent (101o) excess of the smaller particles. The said Portland cement shall be of a fineness permitting ninety-two per cent(92%) to pass through a sieve having one hundred (100) meshes to the lineal inch. And test pieces mixed with one (1) part of cement and three (3) parts of the sand shall develop a tensile strength of two hundred (260) pounds to the square inch, after being exposed to the atmosphere one (1) day and immersed in water six (6) days. Said bulkhead shall be pm vided with a special manhole, to be constructed of concrete of the kind and quality herein required for.the bulkhead. Upon the top'of said manhole there shall be placed a circular cast irop cover of the type known as "Chicago City Standard Heavy" and weighing not less than five hundred and forty (540) pounds, having an 1119198 6'7 extreme height of nine (9) inches and having an internal diameter at the top of twenty-three (23) inches. Said cover shall be provided with a tight, circular, cast iron lid having a diameter of twenty-two and three -fourths (22-3/4) inches and shall rest on the walls of said manhole and be imbedded in mortar of the kind and quality hereinafter required for manholes. Said concrete bulk- head to be constructed in accordance with the plans therefor, which plans are hereto attached and hereby made a part of these specifi- cations. Said plans, for,the purpose of identification, being marked exhibit "A" and exhibit "B". SEGMENTAL BLOCK AND TILE PIPE SEVERS The segmental block required to be.used in.the construction of said imbrovement shall be of the hollow type and of the kind known commercially as "Hollow Double Ring Interlocking Joint Segmental Block". The metal of said block shall be made of stoneware clay of the best quality, and shall be thoruoghly vitrified, and the inner surface,which would be exposed on the inside of the sewer shall be thoroughly and smoothly salt glazed. The thickness of the metal in the block used in constructing the inner ring of said sewers to be respectively as follows: For sewers having an internal diameter of sixty (60) inches not less than one (1) inch. For sewers having an internal diameter of forty-eight (48) inches not less than seven -eighths (7/8) of an inch. For sewers having an internal diameter of forty-two (42) inches not less than three -fourths (3/4) of an inch. For servers having an internal diameter of thirty-six (36) inches not less than three -fourths (3/4) of an inch. The blocks used in constructing the outer ring of said sewers to be,of the hollow type having.two (2) concentric rings supported by.not less than four (4) radial webs of metal per block. The thick- ness of the metal used in each web in constructing said outer ring to be respectively as follows: For sewers having an internal diameter of sixty (60) inches not less than one (1) inch. For sewers haa:ing an internal diameter of forty-eight (48) inches not less than seven -eighths (7/8) of an inch. For sewers having an internal diameter of forty-two (42) inches not less than three -fourths (3/4) of an inch. For servers having an internal diameter of thirty-six (36) inches not less than th ree-fourths(3/4) of an inch. The entire radial thick- ness of the two (2) rings of said blocks when laid in place to be respectively as follows: For sewers having an internal diameter of sixty (60) inches not less than seven and one -quarter (7J) inches. . For sewers Navin an internal diameter of forty-eight (48) inches not less than six (6� inches. For sewers having an internal diameter of forty-two (42) inches not less than five and one-half (5J) inches. For sewers having an internal diameter of thirty-six (36) irn hes not less than four and three -fourths (4-3/4) inches. The said blocks shall be made truly segmental in shape with respect to the circle to ehich they are respectively shaped and shall be made and finished practically straight with respect to the direct- ion of their length. Only straight block with respect to their length will be permitted in the bottom half of the sewer. Block that are but slightly warped will be permitted in the upper half of the sewer provided the warpage does not exceed one -eighth (1/8) of an.inch per foot along the center line of the block, in the direction of its length and provided that such block is in no wise unfit for use on account of imperfections in the material or workmanship or on account of injuries sustained. Each and every one of said block used in the said work shall be somnd and free from any and all defects or in- juries of a character or extent_ that would render same unfit f.or the service or incapable of sustaining the load that would be imposed from within or from without the sewer. The radial joints and the end joints between said blocks shall interlock or overlap in such manner as to prevent a continuous direct joint from the outer to the inner surface of the wall of the sewer and such joints shall be of a type that will readily permit of being sealed and made tight by the use of mortar which, shall be used in sufficient quantity to throughly fill said joints. 68 All surfaces on said blocks between joints shall be roughened or scarified. Said mortar to be composed by volume of one (1) part of Port- land cement of the best quality and two (2) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. Said mortar shall be mixed in batches of such quanities as will be used quickly. No retempered mortar nor any that has received fts initial set will be permitted to be used. The mortar shall be applied in such manner as not to fill or obstruct the voids in the outer ring of block, which are to form a continuous channel for sub-draiage. All joints that appear on the inner surface of the sewer shall be neatly pointed as soon as the forms are removed and all spilled mortar, if any, shall be removed from theinner surface of the sewer. Said block shall be laid in alternate rows (using the shorter lengths to start and close work) so the transverse joints will be staggered. The bottom or invert block shall be laid first, and in perfect conformity with the lines and grades hereinbefore specified for the sewer and the invert block shall be kept in advance of the side block during construction. The invert block shall be settled firmly into place and the other block shall be laid in this order and in a skillful manner until the sewer is completed through the spring line. Said block shall be made to lengths, of not more than two (2) feet nor less than one (1) foot. The width of the blocks to be used in the inner ring of said sewers, with reference tJ the internal diameter of said sewers shall be respectively as follows: For -sewers havin an internal diameter of sixty (60) inches, eleven and four -tenths �11-4/10) inches. For sewers having an internal diameter of forty-eight (48) inches, ten and four -tenths (19-4.10) inches. For sewers having an internal diameter of forty-two (42) inches, nine and one -tenths (9-1/10) inches. For sewers,having an internal diameter of thirty-six (36) inches, nine (9) inches. The width of the blocks to be used in the outer ring of said sewers_ with reference to the internal diameter of said sewers shall be res- pectively as follows: For sewers havin an internal diameter of sixty (60) inches, eleven and nine-tenths11-9/10) inches. - For sewers having an internal diameter of forty-eight (48) inches, ten and nine -tenths (10-9/10) inches. For sewers having an internal diameter of forty-two (42) inches, nine and five -tenths T9-5/10) inches. For sewers havin; an internal diameter of thirty-six (36) inches, nine and six -tenths (9-6/10) inches. Fine, dry and firm earth -shall be tamped well behind all block until, the spring line`is reached. A templet shall be used iri laying the invert and the lower half of the sewer. After the sewer has been brought to the spring line, a collapsible steel or wood from shall be used in turning the arch. As soon as the arch is completed, the forms shall be removed. The said.sewer shall be laid in open trenches. The trenches shall be made -deep and wide enough to accommodate the segmental block and tile pipe required for the respective size of sewer to be constructed. The bottom of the trench shall be excavated to conform as nearly as possible to the respective size and shape of the outer circumference of the sewer. Should soft _or treacherous ground be encountered, the trench shall be excavated to the rmcessary extent to permit same to be filled in with suitable material, as shall be done, and the work to proceed in a safe manner and in a compliance with the requirements therefor. ' Sheeting shall be used where the soil encountered is of such char- acter that.the work cannot be safely and properly installed without its use. The back filling shall start as soon -as the forms are removed. The first twelve(12) inches of the backfill above the spring line must be of selected fine, dry and firm earth thrown in with hand shovels and tamped in place, in layers not to exceed four (4) inches, each, in depth. The remainder of the back -filling shall be done in proper manner to insure no injury being done to the sewer. Surplus earth over and cb,ove that required to properly fill the trenches shall be promptly removed from the line of the work at the contractors expense. One vitrified, salt glazed, tile pipe house connection branch of the "Y" type of the quality herein specified for the pipe sewers and having an internal diameter of six (6) inches, the thickness, of the metal of which pipe shall be -izi9i98 Ok e' ° three -fourths (3/4) of an inch shall be provided in the ,segmental block and the pipe sewers herein required to be constructed with- in the City of Evanston, opposite each lot, piece and parcel of land having not to exceed (40) feet abutting upon said streets or upon the line of said sewers, except across streets, alleys, rail- road rights -of -way. One of said house connection branches shall also be placed in said sewers in the City of Evanston, opposite each full .twenty-five (25) feet exceeding fifteen (15) feet, so abutting, of each lot, piece and parcel of land having more than forty (46) feet abutting upon said streets or, upon the line of said sewers except across streets, alleys, railroad rights -of -way. Said house connection "Y" branches shall each have a bell end pointing away from and in the up -stream direction of the sewer. The bell end of -each house connection "Y" branch shall be closed with a vitrified, salt glazed tile disc sealed with mortar of the kind and quality specified for joints between segmental block and the pipe, respectively. . The tile pipe required to be used in the construction of said improvement shall be of the type known as "Bell and Spigot" pipe. Said pipe shall be cylindrical, straight, sound, smooth, through- ly vitrified, salt glazed and free from any and all defects or injuries of a character or extent that would render same unfit for the service or load that would be imposed from within or from with- out the sewer. Said pipe shall not be less than two (2) feet nor mpre than three (3) feet in length. The joints between said pipe shall be securely sealed with mortar of the kind and, quality hereinbefore specified to be used in making joints between segmental blocks. In case quick sand or excessive ground water is encountered, the joints between said pipes shall be securely sealed.by caulking with tarred oakum of the best quality and in sufficient quantity to compactly fill the joint spaces from the bottom of the bells of said pipe to one-third (1/3) the depth of said joints, and by compactly filling the remaining two-thirds (2/3 of the depth of siad joints with mortar of the kind and quality hereinbefore specified to be used in making joints between segmental blocks. The metal of said the pipe shall be of a thickness respectively as follows: The the pipe having an internal diameter of thirty (30) inches, not less than two and one-half (21) inches. For pipe having an internal diameter of twenty (20) inches, not less than one and tv,o-thirds, (1-2/3) inches. MkNHOLES. Twenty (20) brick manholes shall be built of hard burned sewer brick, upon the sewers hereinbefore provided to be constructed and shall be located at necessary points. Said manholes shall be placed vertically in the ground over the center line of the sewers hereinbe= �ore specified n sucrt manner as to ' rr rg t e too s of the iron o ers erein- requ fired �or said manholes when a.n ol�ce t� the surface o he adjacent ground. Said manholes shall be cylindrical in shape, having an internal dian.eter at the upper surface of the base herein described for tile pipe sewers thirty-six (36) inches and for segmental block sewers, respectively as follows: - For sewers having an internal four (74) inches. For sewers having an internal sixty (60) inches. Rbr sewers having an internal fifty-three (53) inches. For sewers having an internal forty-five (45) inches. diem.eter of sixty (60 inche,s-seventy diameter of ofrty-eight (48) inches - diameter of forty-two (42) inches - .diameter of thirty-six (36) inches - The brick walls of said manholes shall rest on the base here- in described and shall thence rise vertically to the lowest header course, thence being uniformly drawn iri to an internal diameter of twenty-four (24) inches at the top of the masonry to fit the iron covers herein specified to be furnished and set upon the walls of said manholes. Said header courses bhall be laid endwise and /0 horizontally. The number of header holes for tile pipe sewers shall be block sewers, shall be respectively For sewers having an internal (18) header -courses. For sewers having an internal twelve (12) header courses. For sewers having an internal nine (9) header courses. For sewers having an internal (6) header courses. courses required six (6) and for as follows: in said man - segmental diameter of sixty (60) inches -eighteen diameter of forty-eight (48) inches- diamteter of forty-two (42) inches - diameter of thirty-six (36) inches -six . The walls of said manholes shall rest upon the base thereof with- out offsetting and shall be ieght (8) inches thick, built (except as above specified for header courses) of alternate vertical and horizontal courses of brick. The brick used in the construction of -said manholes shall be thoroughly wetted with water before being placed and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and two (2) parts of clean sharp sand, mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. The base of each said manholes shall begin at apoint five (5) inches below the outside bottom of the sewer herein specified and shall extend upward to said outside bottom and along the sides of said sewer to a point midway between the top and the bottom of said sewer. Said base to be circular in form, the diameter of which base shall be sixteen (16) inches greater than the outside diameter of the sewer under and around which it is constructed. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sevier included in said rDnhole stall be omitted leaving the lower half thereof to form the invert of the manhole. Said manhole shall be equipped with a circular cast-iron over provided with a tight lid, weighing not less than five hundred and forty(540) pounds of the type known as "Chicagi CityStar_dard Heavy", having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two and three -fourths (3/.4) inches at the top thereof. Said manholes herein specified to be furnished and set shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the tops of the walls of said mAilholes, which walls shall be built to such height as will bring the tops of the covers when set in place to the surface of the adjacent ground. The manholes to be installed along each of the various sewers herein required to be constructed, not including the special man- hole required for concrete bulkhead, shall be as follows: For sewers having an internal diameter of sixty (60) inches -eight (8) manholes. For sewers having an internal diameter of forty-eight (48) inches - two ( 2 ) Manho 1 e s . For sewers having an internal diameter of forty-two (42) inches - four (4) Manholes. For sewers having an internal diameter of thirty-six (36) inches - two (2) Manholes. For sewers having an internal diameter of thirty (30) inches - two (2 ) Manholes. For sewers having an internal diameter of twenty (20) inches -two (2) Manholes. CATCH BASINS. Thirty-nine (39) brick catch -basins shall be constructed at necessary points along said sewers at the sides of the roadways in which said sewers are to be constructed. Said catch basins shall be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers here- in required ftt,said catch basins , when in place, to the upper surface of the adjacent ground. Said catch basins shall be cylin- drical in shape having an internal diameter of forty -tyro (42) inches at the bottom and upward to the lowest header course, being uniform- ly drawn in to twenty-four (24) inches at the top of the,masomry by means of eight (8) header courses of brick, laid endwise and hori- zontally, to fit the iron covers hereinafter specified to be 1Z 19198 171 furnished and set on the walls of said catch basins. Said catch basins shall have walls eight (8) inches thick built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch basins shall be throughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and two (2) parts of clean, sharp sand mixed with sufficient water to give proper plas- ticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch basins shall each rest on a solid bottom of two (2) inch pine planks laid closely in single thick- ness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure sixty (60) inches in diameter and shall its upper side placed six (6) feet and one (1) inch below the surface of the adjacent ground. Said catch basins shall be connected to the sewers hereinbefore specified to be constructed by means of vitrified, salt glazed, the pipe having an internal diameter of nine (9) inches and of the type known as "Bell and Spigot", the metal of which pipe shall be thirteen - sixteenths (13/16) of an inch in thickness. Said pipe shall be not less than two(2) feet nor more than three (3) feet in length. Said pipe shall be straight, smooth, thoroughly vitrified, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipes shall be securely sealed with a mortar of the kind and quality herein required for brick walls in catch basins. Each catch basin connection shall start in a vitrified, salt glazed, tile pipe "Y" branch of the internal diameter, quality and laid in the manner required for tile pipe used in making catchbasin connections, which"Y" branch shall be set in the sewer at a point not less than six (6) feet in advance of the catch basin, measured along and in the downstream direction of the sewer from a point on said sewer directly opposite the catch basin. The pipes shall be laid true to line and grade and the connection shall enter the catch basin at a point two and one-half (2�) feet above the plank bottom thereof. The pipe entering the catch basin through the brick walls thereof shall be an elbow with the bell end turned downward inside the catch basin to form a trap. The pipe shall be Laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes.for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be back - filled as soon as practicable in order to occasion the least possible inconvenience to the public in use of the roadways. The trenches shall be promptly back -filled to a depth of twelve (12) inches above the top of the pipe. Suitable soil shall be carefully packed under and around the pipe. Said catch basins shall each be equipped and fitted with.a circular,cast iron cover provided with a tight lid, of the type known as "=,ight Park" and weighing not less than one hundred and eighty (180) pounds, having an extreme height of six and five -eighths (6-5/8)inches and having an internal diameter of twenty-one (21) inches at the base and nineteen and three -fourths (19-3/4) inches at the top thereof. Said catch basin covers herein specified to be furnished and set shall be imbedded in mortar. of the kind and quality hereinbefore specified for brick walls in said catch basins. An inlet.or opening of -nine (9)-inches .in diameter Shall be made in the side. of . each said catch basins in such manner as to receive the water from the. ditches. Said inlet to be provided with a suitable iron grating placed in such manner as to prevent miscellaneous rubbish from entering the catch basin through said inlet. Said grating to consist of two (2) one-half (J) inch round, iron bars placed vertically in said outlet and in such manner as to divide the same into -three (3) equal parts. The ends of which bars shall be firmly imbedded in the walls of said catch basins. 72 BRICK All brick to be used in the improvement herein provided to be made shall be hard burned sewer brick of the best quality having full corners, dense texture and fracturing on sharp lines when broken. The brick shall be moistened before being laid in the work. SAND. All sand to be used in the improvement herein provided to -be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent,by weight, of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one (1) part of the cement herein specified and three (3)'parts of sand, by weight, when made into briquettes will develop a tensile strength at least aqual to the ten- sile strength of a mortar of the same consistency and proportion,made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen natter. CRUSHED STONE. All crused lime stone'to be used in the improvement herein pro- vided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT. The Portland cement to be used in the improvement herein pro- vided to be made shall be of such quality that representative samples selected from shipment shall be capable of padsing the following tests for fineness, soundness, initial setting and tensile strength, to -wit: FINENESS. The cement shall be so ground that 92% will pass through a standard sieve, having 10,000 meshes and 75% will pass through a sieve having 40,000 meshes per square inch. SOUNDNESS.A pat of neat cement, three and one-half (3fl inches in diameter, one-half Q) inch in thickness at the center and tapered to a feather edge at the.circumference, made on glass, shall remain in the air, protected by a damp cloth, for twenty-four (24) hours, and shall then be subjected to steam for four hours, and shall be immedi- ately thereafter immersed in boiling water for (4) hours. The pat must show no checking, warping or swelling, Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling speciified to the neat pat. SETTING. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty (30) minutes. It shall not develop hard set in less than one nor more than tan hours. TENSILE STRENGTH. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: NEAT CEMENT. AGE. STRENGTH. 24 7 hours days(I in moist air ... ... ...... .... .. ............ day in moist air, 6 days in water) ........... 175 500 lbs. lbs. 28 days(1 day in moist air, 27 days in water)........... 600 lbs. ONE PART CBMENT, T �� PARTS STANDARD OTTAWA SAND. AGE. STRENGTH. 7 days (1 day in moist air, 6 days in water).......... 200 lbs. 28 days (l.day in moist air, 27 days in water)......... 275 lbs. �r110198 The briquettes shall show no retrogression in strength within the period specified. 7 3' Samples of the cement proposed submitted in such quantities and at required tests to be made. to be used in the work shall be such time and place as will enable All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be throughly protected against damage until used. SEWER PIPE The tile pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindri- cal, straight, smooth,,sour_d, thoroughly vitrified, salt glazed and and free, from any and all defects or injuries of a character or extal t that would render it unfit for the service or load that would be imposed upon it from within or without. Said pipe shall give ;PL clear ring when light- ly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. DATUM PLANE The datum plane of the City of Evanston hereinbefore mentioned is the plane of low water mark,ofLakC Michigan in the year, A. D. 1847 as established by the Trustees of the Illinois and Michigan Canal, and is twenty-two and forty-one hundredths,(22.41) feet below the U. S. Geological Survey Bench Hark on the north side of the Sherman Avenue entrance to building known as City Hall, located at the northwest corner of Davis Street and Sherman Avenue in said City of Evanston. SECTION 2. That for the purpose of the improvement aforesaid, the following described and bounded territory within said City of Evanston is hereby created into and declared to be a drainage district, to -wit: All that part of the City of Evanston, Cook County, Illinois, lying north of the south line of Section Eleven (11), Township Forty- one T41) North, Renge thirteen (13) East of the Third (3rd) Principal Meridian and west of the center line of Bennett Avenue in said City of Evanston. The owners and the occupants of the lots, pieces and parcels of land lying within said drainage district hereinbefore described shall at all times hereafter be entitled to the use and benefit of the sewer system provided for by this ordinance. Right, permission, privilege and and authority are hereby given and granted to the present and future owners and occupants of the land lying within saidabbve named drainage limits to open and connect all ditches, drains and sewers which now exist or which may be hereafter constructed within said drainage dis trict,;into and with the said sewer system hereinbefore in this ordi- nance specified. SECTION 3. That the recommendation of the Board of Local Improvements of the City of Evanston providing for said improvement together with the estimate of the cost thereof made by the Engineer of said -Board, both -hereto attached, be and the same are hereby.approved. SECTION 4. That said improvement shall be made and the whole cost thereof including the sum of .ten thousand four hundred forty-three and ninety hundredths dollars ($10,443.90), being the amount included in the estimate of said Engineer, hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Cpncerning Local Improvements," approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of ten thousand four hundred and forty-three and ninety hun- dredths dollars ($10,443.90) shall be applied toward the cost of making, levying and collecting assessment. SECTION 5. That -the aggregate amount herein ordered to be assessed against the property, and also the assessment of each lot and parcel of land therein assessed, shall be divided into ten installments in the manner provided by the Statute in such case made and provided, and each of said installments shall bear interest at the rate of six - per centum per annum according to law until paid. 74 SECTION 6. And for the purpose of anticipating the col- lection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said in- stallments bearing interest at the rate of six per centum per.annum, payable annually, signed by the Mayor and by the Commissioner of Public Torks, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the provisions of the Act of the General Assembly of the State of Illinois, entitled,"An Act Concerning; Local Improvements; approved June 14th, A. D. 1897, and the amendments thereto. SECTION 7. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taker_ to levy a special assessment for said improvement,.in accordance with the provisions of this ordinance and in the manner prescribed by law. SECTION 8. That all ordinances or parts of ordinances con- flicting with this ordinance be and the same are hereby repealed. SECTION 9. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 5th day of July A. D. 1922. Approved July 6th, 1922. JOHN F. HAHN, H.P. PEARSONS, City Clerk. Mayor. - - - - - - - - - - - - - - - - - - - - - - - AN ORDINANCE. Amending Sections 1115 and 1118 of Article =II of Chapter XIX of the Evanston Code adopted Larch 26, 1915. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTIOIT 1. That Section 1115 of Article XXXVII of Chapter XIX of the Evanston Code adopted March 26, 1915, be and the same is hereby amended to read as follows: Frontage Consent - Vhere Required) It shall be unlawful for any person, firm or corporation to locate, build, construct or maintain on any lot or premises abutting upon any street in the city in which two-thirds (2/3) of the buildings on both sides of the street and between the nearest intersecting streets are used exclusively for residence purposes, any building,: structure or premises to be used wholly or in part for any livery, boarding or sales stable , automobile livery, public garage, building or premises for the keeping or storage of automobiles or other like vehicles for hire or profit, any hospital, reformatory, rescue or shelter institution, any blacksmith shop, lumber yard, foundry, machine shop, laundry, theatre, medical dispensary, sanitarium, oil or fuel selling station, junk stores or yards with- out that a permit from the Building Commissioner is first had and obtained, and without that the written consent of a majority of the, property according to the -frontage on each side of said street upon which such lot or premises abut, and between the nearest in- tersecting streets,•also the written consent of the owners of a majority of the frontage within one hundred (100) feet on each side of the proposed site on the said street, and when the pro- posed site is upon a corner lot, also the written consent of the owners of a majority of the remaining frontage on the same side of the side street on which such lot or -premises abut and between the nearest intersecting streets is first had and obtained; provided, that all establishments or used herein narm d which are located on any lot or premises which abut only upon a public alley or court shall be considered as fronting on the street immediately to the rear of such lot or premises, biit in such cases frontage consents of the property on the opposite side of such street need not be obtained . SECTION II.' That Section 1118 of Article XXXVII of Chapter 11z19198 7' XIX of,the Evanston Code, adopted March 26, 1915, be and the same is hereby amended to read as follows: "75 Location Near %Church or School) No hospital, reformatory, rescue,or shelter institution, blacksmith shop, foundry, machine shop or laundry, medical dispensary, sanitarium, junk stores or yards,,livery stables, boarding stables, oil or fuel selling sta- tions, or public garages, of any kind or description, shall here- after be erected or established within three hundred (300) feet of anz, property used for church, public or parochial school purposes without that the written consent of such church, public or parochial school is first had and obtained of the authorized, officers. The distance from any establishment herein named to any property used for a church, public or parochial school, shall be measured in a straight line when within the same block, but when an intersecting street intervenes, it shall,be measured along the nearest route by street or alley. SECTION? III., Penalties for a Violation of any of the provisions of this ordinance shall be the same penalties as are applicable to a violation of the said, sections of the Evanston Code of 1915 of which this ordinance is amendatory. SECTION IV. This ordinance shall be in force from and after its passage, approval and publication. Adopted by the City Council of the City of Evanston on the llth day of July A. D. 1922. Approved July 12th, 1922. JOHN F. HAHN, . H.P. PEARSONS, City Clerk. Mayor. Published in News Index, .July 13, 1922. AREAS, the development of the automobile traffic in the Commercial Districts of the City of Evanston has reached such pro- portions that the public streets are already inadequate to take care cf the same; and WHEREAS, the convenience and safety of the public demands that all vehicular traffic to and from property abutting upon the public streets in congested portions of Comrnefcial Districts where the same is obliged to pass in and out across public sidewalks be reduced as much as practicable; NOT THEREFORE, BE IT ORDAINED BY TM, CITY COUNCIL OF THE CITY OF EVAN TON, ILLINOIS. . SECTION I." It{ sl�a.11 be unlawful hereafter for any person to drive,' push, draw or otherwise move any wagon, cart or other vehicle, whether propelled by animal power, or otherwise, or aay motor vehicle, over or across any public sidewalk in any portion of the City of Evanston, without that the consent of the City Council thereto shall first have been had and obtained for such crossing of such public side- walk, �un_der a penalty of not less than Twenty -Five Dollars, nor more than Three Hundred Dollars for each offense. SECTION II, No person, firm or corporation shall hereafter build, construct,maintain or use any driveway leading from a public street in- to.private property within the Class "C" Commercial Districts included in the Evanston Zoning Ordinance adopted January 18, 1921 or any of the amendments thereof vrithout that the consent of the City Council thereto ( which consent shall at all times be subject to modification or re- vocation in the interest of public welfare), shall have first have been duly had and obtained, and until the applicant shall have otherwise complied with existing and herewith adopted ordinances and require- ments; and in addition thereto, shall have given a bond in the penal sum of Ten Thousand Dollars with good and sufficient surety, (to be appro*ed by the City Council)conditioned, among other things, that such permission and authority to construct and maintain such driveway shall be subject to modification or revocation by the City Council, without the consent of the applicant; and to the furiher condition that the - .,.�,... -�- .�. .-+Iw!. .. _�ry,...;...�r��T,.,..!Fr. +- ` �• -. T.�!!1.7R"�!", .j. ,�__ , .._ _ may{ 76 applicant shall indemnify and save harmless the City of Evanston from all liability for damages or expenses, resulting from, or by reason of or ofthe granting of such permission, or by reason of any act or thing done by the applicant by virtue of the permission herein provided for, under a penalty of not less than Twenty Five Dollars, nor more than Three Hundred Dollars for each offense, and each day that any such driveway is built, constructed, maintained or used by any such person, firm or corporation, contrary to any of the provisions of this ordinance, shall constitute a separate offense. SECTION 3... All ordinances or parts of ordinances in con- flict with any of the provisions of this ordinance are hereby re- pealed. SECTION 4. This ordinance shall be in effect from and after its passage, approval and publication. Adopted by the City Council of the City of Evanston on the llth day of July A. D.,1922. Approved July 12th, 1922. H. P. PEARSONS, Mayo r. Published in News Index July 13th, 1922. RECOIA-E- 1DATION, ESTI14ATE AND ORDINANCE. RECOP,r EFDATION BY BOARD OF LOCAL IMPROVE-IMTTS. JOHN F. HAHN, City Clerk. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: We herewith submit an ordinance providing that the public alleys in Block two (2) Hardin's Addition to Evanston, in the north-west one -quarter (J) of Section nineteen (19), Township forty-one (41) North, Ra,nSe fourteen (14) East of the Third (3rd) Principal Meridian, (excepting therefrom the public Alley lying north of and adjoining lots twelve (12) to eighteen (18), both in- clusive in said block two (2), in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland Cement Concrete pavement, using a bituminous filler strip for expansion joints in pavement, adjusting macadam paving adjoin- ing and connecting with the proposed improvement; together with an estimate of the cost of said improvement and recommend the passage of said ordinance and the malting of the improvement contemplated therein. Respectfully submitted, H. P. PEARSONS Win BLANCHARD HAL V1. Sla'ITH. Board of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, Illinois, September 19th, 1922. ESTIMATE OF ENGINEER OF BOARD OF LOCAL Iri:PROVE]VMTS . To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the :City of Evanst.Q,n having adopted a resolution that the public alleys in block two (2) Hardin's Addition to Evanston, in the northwest one -quarter (J) of Section nineteen (19), Township forty-one (41) North, Range four- teen (14) East of the Third (3rd) Principal Meridian, (excepting therefrom the public alley lying north of and adjoining lots twelve (12) to eighteen (18), both inclusive in said block two (2), in the City of Evanston, County of Cook, State of Illinois, be '. 1zt919s 77 be improved "ay grading, paving with a Portland Cement Concrete pavement, using a bituminous filler strip for expansion joints in pavem_net, adjusting macadam paving adjoining and connecting with the proposed improvement; and presented to the City Council of the City of Evanston a recommendation that such improvement be made, I herewith submit an estimate of the cost of such improvement as de- scribed in said resolution, including labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment, as provided by . law, viz: EST WTE OF COST 300 Cu yds. of g rading G $1.60 per cu. yd...............$ 1065 Sq. yds, of Portland Cement Concrete paving complete in place Q $2.75 per sq. yd.................. 280 Lin. ft. of bituminous filler strip for expansion joints in paving, laid complete in place @ 10/ per lin. ft......................................... 100 Sq. yds of macadam paving adjusted to grade @ $1.20 per sq.'yd..................................... For lawful expenses attending the pao ceedings for making said improvement and the cost of making and collectin the assessment therefor, not to exceed six per centum (6% of'the above, to -wit: $3,556.75 .......................0 480.00 2,928.75 28.00 120.00 213.40 Total ............... ............... $ 3,770.15 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improvement and the lawful expenses attending the same. (Signed) Vim. BLANCHARD Engineer of the Board of Local Im- provements of the City of Evanston'. Dated, Evanston, Illinois, September 19, 1922. AN ORDINANCE. Providing that the public alleys in Block two (2), Hardin's Addition to Evanston, in the northwest one -quarter (J) of Section nineteen (19),Township forty-one (41) North, Range fourteen (14) East of the Third (3rd) Principal Meridian, (exceptin therefrom the,public alley lying north cf and adjoining lots twelve t12) to eighteen (18), both inclusive in s. aid block two (2) , in the City of Evanston, County of Cook, State cf Illinois, be improved by grading, paving with a Portland Cement Concrete pavemriet, using a bituminous filler strip for expan- sion joints in pavement, adjusting macadam paving adjoining and con- necting with the proposed improvement. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY.OF EVANSTON: SECTION 1. That a local improvement shall be made within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local improvernent is as follows, to -wit: That the public alleys in block two (2), Ha.rdin's Addition to Evanston, in the north-west one -quarter (f) of Section nineteen (19), Township forty-one (41) North, Range fourteen (14) East of the Third Ord) Principal Meridian, (exceptin therefrom the public alley lying north and adjoining lots twelve (12� to eighteen (18), both inclusive in said block two (2), in the City of Evanston, County of Cook, State of Illinois, be and the same are hereby ordered improved as follows: Location of Pavement. The center line of the pavement herein provided to be constructed shall coincide with the center line of the alley within which said pavement is included. WIDTH OF PAVOIENT. The width of the pavement herein provided to be constructed WIN shall be fifteen (15) feet. GRADE OF PAVE zr,NT . The grade of the upper surface of the finished pavement here- in provided to be constructed is hereby established as follows, measured in feet and decimal parts of a, foot above the datum plane of the City of Evanston, to -wit: Transverse Section of Alleys Outer edges of Pavement. Alley herein provided to be paved and extending- east and- west in said Block 2. At the east line of Maple Ave. 23.85 At a point seventy {70) feet -east of the east line of Maple Avenue. At a point fifty-nine (59) feet west of the west line of Elmwood Avenue. At the west line of Elmwood Ave. Alley herein provided to be paved and extending north and south in said Block 2. At the north line of said alley At a point ninety-three (93) feet south of the north line of said alley. At the south line of said alley ALLEY PAVING. 24.15 22.00 20.50 23.10 23.50 23; 00 Center line of Pavement. 23.60 23.90 21.75 20.25 22.85 23.25 22.75 The grade of the center line and outer edges of the pavement at intermediate points shall be respectively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane of the low water mark of Lake Michigan in the year A. D. 1847, as established by the Trustees of Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of Shexzpan Avenue entrance to the building known as City Hall, located at the northwest corner of Davis Street and Sherman Avenue, in said City of Evanston. The upper surface of the pavement herein provided to be con- structed, when completed, shall conform to the arc of a circle pass- ing through the respective grade points in the center line and at the outer edges of the pavement, and shall be true and symmetrical. GRADING. The alley herein provided to be improved shall be cleaned prior to the paving thereof, in a thorough manner of all deterio- rated planking' blocking or other debris. The soil of the road- way shall then be excavated or filled upon with other suitable soil, as the erase may be, to such depth and shape as will bring the upper surface of the finished pavement, when constructed as hereinafter specified, to the elevations and grades hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable self propelling roller or flooding with water as the case may require. Depressions or holes appearing as the preparation of the sub -grade progresses shall be filled with suit- able soil. Spongy earth that is unfit to be left in the sub -grade, shall be removed by the contractor without extra charge. CONCRETE PAVEEENT - AL1Y_Y Upon the subgrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement, composed of Portland cement, sand and gravel mixed by volume in tatios of one part of cement, sand and gravel mixed by volume in ratios of one part of cement, two parts sand, and three parts of gravel with sufficient clean water to give proper plasticity and in the ::tanner hereinafter set forth. The concrete shall be spread on the sub -grade in such quantity and to such form that after being compacted in place it skull have a uniform thickness of six inches. The Portland cement to be used in making this concrete pavenent shall be of such quality that representative samples collected from shipments made for the job shall be capable of passing the following tests for fineness, soundness, initial setting, and tensile strength, to -wit: FINENESS. The cement shall be ground so that 92,1,716 will pass through a, standard sieve, having 10,000 meshes and 75% will pass through a.sieve having 40,000 meshes per square inch. SOUNDNESS. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at. the center and tapered to a feather edge at the eircumference,made on glass, shall re- main in the air, protected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquette of the neat cement which have remained in air one day and in water six days shall likewise withstand the steam- ing and boiling specified for the neat pat. SETTING. The cemnet when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall noy develop hard set in less than one nor more than ten hours. TENSILE STRENGTH. Briquettes one square inch in cross section made of the cement shall show tensile strength not less than as follows: NEAT CEIMENT . AGE. STRENGTH. 24 houre in moist air ........................ 175 lbs. 7 days (1 day in moist air, 6 days in water) 500 lbs. 28 days (1 day in moist air,27 days in water) 600 lbs. ONE PART CEMENT, THREE PARTS STANDARD OTTAWA SAND. AGE STRENGTH. 7. days 1 day in moist a.ir, .6 days in water 200 lbs. 28 days 1 day .in moist air,27 days in v✓ater) 275 lbs. The briquettes shall show no retrogression in strength within the period specified. The sand to be used for making the concrete shall be free from dust, clay, loam, vegetable or other deleterious matter. The ,rains of sand shall be angular and shall range in size from one -quarter inch down to the finest; but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind drifted sand shall not be used. The sand shall be of such quality that the mortar composed of one.. part of the cement hereinbefore specified and three parts of sand, by weight, wren made into briquettes, will de velop a tensile strength at least equal to the strength of a mortar of the same consistency and proportion made with the same cement and Standard Ottawa sand. In no case shall the sand, whrn used for this concrete, contain frost or 1-dmps of frozen -matter. The gravel to be used in making this concrete shall be clean, hard, free frcm dust, loam, vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable sizes grqding from.a maximum of two (2) inches down to a minimum of one-fourth (1-4) inch. In no case shall the gravel when used for this concrete contain frost or lumps of frozen matter. The sand and gravel shall be clean when delivered on -.the job., and shall be kept clean until used. The method used for measuring the ingredients in the concrete shall be one that will insure a uniform proportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be considered one cubic foot. The concrete shall be mixed in a batch machine mixer of a type that will insure a uniform distribution of the ingredients through- out the mass. Ingredients of the concrete or mortar shall be mixed to the desired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in color, and homogeneous. Clean water, free from oil, acid, alkali or vege- table matter shall be admitted to the mixer in sufficient quantity to rpoduce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled with- out causing,a separation of the gravel from the mortar. The concrete shall be handled rapidly from the mixer to its place in the pavement. Successive batches shall be deposited in place on the sub -grade in,a continuous operation so that sections of the pavement between expansion joints, hereinafter specified, shall be entirely completed and without the use of intermediate cross forms or bulkheads. Concrete shall not be retempered or used that has par tially hardened. The concrete shall be compacted and brought to the established grade and shaped with a template or straight edge, and shall be brought to a comparatively even sur- face. After the concrete has been so brought to grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even surface. Said roller shall not be less than five feet in length, and not less than eight (8) inches not more than twelve 412) inches in diameter and weighing not less than one hundred pounds (100 lbs.). The roller shall be operated across the pavement from side to side of same, by means of ropes attached to each side of the roller, at such angle with the center line of the pavement as to permit the roller to advance along the pave- ment two feet for each time across. After the roller has covered a given area in the manner'desckibed, the same area shall be simi= larly rolled by the roller.for not less than three (3) times at intervals of fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may be necessary to remove excess water. After the rolling has been completed the pavement shall be finished by two (2) applications of a belt made of canvas, not less than'six (6) inches wide and not less than two (2) feet longer than the width of the pavement. For the first application, vigorous strokes at least twelve (12)' inches long shall be used. The longitudinal movement of the belt along the pavemnet shall be very slight. The second application of the belt shall be immediately after the water glaze or sheen disappears, and the stroke of the belt shall be not more than four (4) inches, andtthe longitudinal move- ment'shall be a continuous forward movement. A suitable bridge to span the width of the pavement shall be used to finish the joints, no part of bhich shall be in contact with the finished work. A nothched straight edge ten (10) feet in length shall be used for testing each transverse joint, prior to and subsequent to final finiskiing. The straight edge shall be placed over the joint, parallel to the center line of the pavement and moved across from curb to curb. Vhen the surface of the concrete upon testing shows to be high or low „ concrete will be added or removed to bring the surface its true shape. The concrete adjoining transverse joints shall be dense in IZ 0198 S� character and after rolling shall be finished witta wood float, which is divided through the center and which will permit finish- ing on both sides of the filler at the same time. The finished surface of the concrete shall not vary more than one -eighth (1-8) of an inch from a two foot straight edge placed upon the concrete in any, position. Workmen shall not walk on the freshly laid concrete; and no one shall be allowed on the concrte after it has been worked into form and position with a template or straight edge, until it has thoroughly hardened. Transverse expansion joints not less than three -eighths (3/8) inch or more than one-half (*) inch in width shall be placed across the pavement at right angle to the center line of the roadway; spaced so as not to exceed thirty-three and one third (33-1/3) feet apart. All expansion joints shall extend through the entire thick- ness of the pavement. In these expansion joints there shall be placed a prepared strip of bituminous filler of the thickness here- inbefore specified for expansion joints and extending from the bot- tom of the pavement herein specified to the upper surface -of the finished pavement. The upper edges of all joints and the upper outer edges of the pavement shall be neatly troweled to a radius of one -quarter (1) inch. All metal, manholes, catch basin covers, and other fixed objects shall be separated from the concrete pavement by a joint filler of the sane character as hereinbefore specified for expansion joints; which joint filler shall extend through the entire thickness of the pavement. PROTECTION. As soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be sprayed, with water; and it shall be kept throughly wet for at least ten days. As soon as it can be done without damage to the concrete, the surface thereof, during hot and dry weather and if unshaded shall be covered with not less than one inch of earth, sawdust, straw or other suitable and available material, which covering shall be kept wet for at least four days after being placed. In dry and hot weather freshly laid concrete shall be protected by a canvas covering until it can be sprinkled or covered, as specified. The water and concrete aggregates shall be heated if at any time during the progress of the work the temperature is, or from weather reports will likely during the nest twenty-four hours drop to (35) thirty-five degrees Fahrenheit. The concrete shall be protected against freezing for at leat ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strngth to resist springing out of shape. The forms shall be securely staked or otherwise held to the established line, and their upper edges shall conform to the established grade. Wooden forms shall be throughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall'be removed from forms that have previously been used. .The pavement shall be throughly cleaned and open to the public as soon as the cement has set sifficiently to receive the traffic without injury to the surface or body J. of the concrete. ADJUSTMENT OF PRESENT MACADAM PAVING. The present macadam paving where the same adjoins the pro- posed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and quality composing said macadam paving and having been throughly compacted it shall form a base or foundation for a bi- tuminous macadam pavement to be placed thereon. The upper' surface of said base or foundation when completed shall be two -(2) inches below the finished grade of the proposed improvement where same adjoins said macadam paving. AM Upon the base of the foundation prepared as hereinbefore specified, there shall be spread a layer of clean, hard broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of lime- stone shall be evenly dpread, and in sufficient quantity to insure a thickness of two (2) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it mall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set -and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be a plied to the lime- stone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one (1) gallon thereof being evenly spread on and used in each and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic.cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, veget- able or othek deleterious substances, and -broken to a size ranging from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one- fourth (f) inch in diameter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the psreading of these limestone screenings the paving so covered, shall be given a through rolling with a roller of the weight and type hereinbefore named. This rolling shall continue until the screenings are driven into, and throughly bonded with, the layer of stone towhich same is applied. The surface of the paving shall next be throughly cleaned of all loose stone, dirt leaves or other foreign material thereon, after being so cleaned there shall be applied to the surface a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread, as to insure not less than three-quarters (3/4) gallon thereof being evenly spread and used on each and every square yard of paving. Immediately after the second applicatio# of asphaltic cement is made and spread -(and progressing therewith) there shall be ppread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one - eighth inch. The granite chips shall 13e spread in such manner and quantity as to insure not less than one one -hundred and forty- fourth of a cubic yard thereof being evening spread and used on each and every square yard of paving. A final rolling of the paving shall closely follow the spread- ing thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the pavement is throughly compacted, and brought to a surface, free from depressions and true to form and grade. Any and -all depressions developing during progress of the rolling, required in process of constructing the pavement shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representAtive samples collected from shipments thereof shall be capable of meeting the following requirements and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural asphalt and a flux to be tested with and proven the best suited to the asphalt to be usedi IZ19198 EOM and shall not be a by-product of the oil refining or gas manufac- turing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so pre- pared dor use as to best adapt it to the climatic and traffic con- ditions of the roadway on which it is to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 grams for one minute, (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its pro- ducts, other injurious matters, and the various hydrocarbons com- posing it shall be present in homogeneous solution, no granular constituent being present. (5). It must not flash below 35Q degrees Fahrenheit.when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than two (2) per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7), It shall be soluble it chemically pure carbon disul- phide at air temperature to the extent of at least 95%. (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98J-J shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in petroleum naptha, at the.air temperature to the extent of not less than 72 per ,cent. (10). Upon ignition, the bitumen of.the'cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or .residue coke. ,MISCELLANEOUS SPECIFICATIONS. BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work, SAND. All sand be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable of other deleterious matter nor more than three (3) per cent by weight of clay. Said sand, when -dry., shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five,(5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement here- in specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL. All crushed limestone or gravel to be used in the imrrovement herein provided to be made shall be tough, durable, free from vege- table or other deleterious matter and shall contain no soft flat or �AV elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT. ThO Portland cement to be used in the improvement herein pro vided to be made shall be of such quality that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit: FINENESS. The cement shall be so ground that 92% will pass through a standard sieve, having 10,000 meshes and 75% will pass through a sieve having 40;000 meshes per square inch. SOUNDNESS. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, protected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately there- after -immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Brokem briquettes of the neat cement which have remained in -air one day and in water six days shall like-' wise withstand the steaming and boiling specified to the neat pat. SETTING. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. TENSILE STRENGTH. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: NEAT CEMENT. AGE STRENGTH. 24 hours in moist air ............................ 175 lbs. 7 days (1 day in moist air, 6 days in water).... 500 lbs. 28 days tl day in moist air, 27 days in water)... 600 lbs. AGE ONE PART CEMENT, THREE PARTS STANDARD OTTAWA SAND Y,STRENGTH. 7 days (1 day in -moist air, 6 days in water)...' 200 lbs. 28 days 1 day in moist air,27 days in water)... 275 lbs. The briquettes shall show no retrogression in strength within the period specified. . Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound pack- ages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE. The tile pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, srflooth, sound, throughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said pipe shall give a clear ring when lightly struck with a masonts hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13/16) of an inch. IZ 0198 85 For pipe having an internal diameter of twelve (12) inches not less than one (1) inch All the'matekial used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind es- pecially adapted for the purpose for Which it shall be used, -and. all necessary labor shall be performed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendent of the Board of Local. Improvements of the City of Evanston. Section 2. That the recommendation of the'Board of Local Im- provements of the City of Evanston providing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approve, Section 3. That said improvement shall be made and the whole cost thereof includin the sum of,,two hundred thirteen and forty hundredths -Dollars (9213.40), beins, the amount included in the estimate of 'said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements; Approved June'14th, A, D. 1897, and the amendments thereto, and that said sum of two hundred thirteen and forty hundredths Dollars ($213.40) shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into five installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said install- ments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and the Commissioner of Public Torks, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the provisions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improvements," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner prescribed by law. Section 7. That all ordinances or parts of ordinances con- flicting with this ordinance be and the same are hereby repealed. Section'8. 'This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 19th day of September A. D. 1922. Approved, Sept. loth, 1922. JOHN F. HAHN, H. P. PEARSONS, City Clerk. Mayor,- RECOISAENDATION, ESTIMATE,AND ORDINANCE. RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: We herewith submit an ordinance providing that the Public Alley, extending from the north line of Hamilton Street to the south line of Dempster Street, in Block seventy-four (74). Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland cement concrete pavement, using a bituminous filler strip for expansion joints in pavement, constructing necessary catch basins, catch basin connections to surface drainage seder, adjusting manhole and macadam paving adjoining and connecting with the proposed improvement;:together with an estimate of the cost of said improvement and recommend the passage of said ordinance and the making of the improvement contemplated therein. Respectfully submitted, H. P. PEARSONS, Wm Blanchard, HAL W. SMITH. Board of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, Illinois. September 19, 1922. ESTIMATE OF ENGINEER OF BOARD OF LOCAL, IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that the Public Alley, extending from the north line of Hamilton Street to the south line of Dempster Street, in Block seventyrof our (74), Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland cement concrete pavement, using a bituminous filler strip for expansion joints in pavement, -constructing necessary catch basins, catch basin connections to surface drainage sewer, ad- justing manhole andmacadam paving adjoining and connecting with the proposed improvement; and presented to the City Council of th e City of Evanston a recommendation that such improvement be made, I here- with submit an estimate of the cost of such improvement, as described in said resolution, including labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment as provided by law, viz: f .500 cu. yds. of grading .1500 sq. yds of Portland complete in plac 450 Lin. ft. of bituninc expansion joint: place 0 10,e per 3 Brickcatch basins it plank bottoms, c completer in plE 20 Lin. f t. of catch bz drainage sewer, (5 ) feet, incluc laid emmnlete it ESTIMATE OF COST. a$1.60 per cu. yd................ cement concrete paving e @ $2.75 per sq. yd.............. us filler strip for in paving, laid complete in _ lin. ft.......................... cluding cast iron covers, xcavation and back filling, ce, @$75.00 each.........:..;..... sin connections to surface average depth of cut five ing trenching and back filling, nlace ® 91.00 Der lin. ft....... 1 Manhole adjusted to grade ............................ 80 sq. yds. of macadam paving adjusted to grade $1.20 per sq. yd..................................... For lawful expenses attending the proceedings for making said imrpovement and the cost of making and collecting the assessment therefor, not to exceed six per ventum (6%) of the above, to wit: $5,321.00 ......................... Total ........................$ $ 800.00 ,4,125.00 45.00 225.00 20.00 10.00 96,00 319.26 5,640.26 1zt9i98 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improvement and the lawful expenses attending the same. (Signed) Wm. BLANCHARD. Engineer of the Board of Local Im- provements of the City of Evanston, Dated, Evanston, Illinois, September 19, 1922. AN ORDINANCE. Providing that the Public Alley, extending from the north line of Hamilton Street to the south line of Dempster Street, in Block seventy-four (74), Village of Evanston, in the City of Evanston, County of Cook State of Illinois, be improved by grading, paving with a Portland cement concrete pavement, using a bituminous filler strip for expanison joints in pavement, constructing necessary catch basins, catch basin connections to surface drainage sewer, adjusting manhole and macadam paving adjoining and connecting with the proposed improvement. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVAN STON: SECTION 1. That a local -improvement shall be made with- in the City of Evanston, County of Cook „ State of Illinois, the nature, character, locality and description of which local improve- ment is as follows, to -wit': That the Public Alley, extending from the north line of Hamilton Street to the south line of Dempster Street, in Block seventy-four(74), Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be and the same is hereby ordered improved as follows: LOCATION OF PAVEMENT The center line of the pavement herein provided to be con- structed shall coincide with the center line of the alley within which said pavement is included. WIDTH OF PAVEMENT. The width of the pavement herein provided to be constructed shall be nineteen (19) feet. GRADE OF PAVEMENT. The grade of the upper surface of the finished pavement herein provided to be constructed is hereby established as follows, measured in feet and decimal parts of a foot above the datum plane of the City of Evanston, to -wit: Transverse Section of Alley: At north line of Hamilton Street, At 100 feetnorth of north line of Hamilton Street, At two hundred (200) feet north of north line of Hamilton Street, At two hundred ninety-five (295) feet north of north line of Hamilton Street, At three hundred seventy (370) feet north of north line of Hamilton St., At four hundred fifty-two (452) feet north 0 North line of Hamilton St., At five hundred fifty-four (554) feet north of north line of Hamilton Street, Outer Edges Center line of Pavement of Pavement. 14.00 13.75 13.50 13.25 14.40 • 14.15 13.60 13.35 14.50 - 14.25 13.80 13.55 14.50 14.25 At south line of.Dempster Street, 13.80 13.55 • q MOIJ ALLEY PAVING. The grade of the center line and outer edges of the pavement at intermediate points shall be respectively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane of the low water mark of bake Michigan in the year A. D. 1847,_as established by the Trustees of Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman entrance to the building known as City Hall, located at the northwest corner of Davis Street and Sherman Avenue, in said,City of Evanston. The upper surface of the pavement herein provided to be constructed, shall conform to the arc of a circle passing through .the respective grade points in the center line and at the outer edges of the pavement, and shall be true and symmetrical. GRADING. The alley herein provided to be improved'shall be cleaned prior to the paving thereof, in a thorough manner of all deteriorated planking, blocking or other debris. The soil of the roadway shall then be ex- cavated or filled upon with other suitable soil, as the case may be, to such depth and shape as will bring the upper , surface of the finished pavement, when constructed as hereinafter specified, to the elevations and grades hereinbefore established. The dub -grade shall be thoroughly compacted by means of a suitable self-propelling roller or flooding with water as the case may require. Depressions or holes appearing as the preparation of the sub -grade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left in the sub -grade, shall be removed by the contractor without extra charge. CONCRETE PAVEMENT- ALLEY Upon the subgrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement,.composed of Portland cement, sand and gravel mixed by volume in ratios of one part of cement, two parts sand, and three parts of gravel with sufficient clean water to give proper plasticity and in the manner hereinafter set forth. The concrete shall be spread on the sub -grade in such quantity and to such form that after being compacted in place it shall have a uniform thickness of six inches. The Portland cement to be used in making this concrete pavement shall be of such quality that. representative samples collected from shipments made for the job shall be capable of passing the following tests for fineness, soundness, initial setting, and tensile strength, to -wit: FINENESS. The cement srxall be ground so that 02,55 will pass through a standard sieve, havink 10,000 meshes and 75% will pass through a sieve having 40,000 meshes per square inch. SOUNDNESS. A pat of neat cement , three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a; feather edge at the circumference, -made on glass, shall remaL n in the air, protected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately there- after immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquette of the neat cement which have remained in air one day and in water six days shall like- wise withstand the steaming and boiling specified for the neat pat. SETTING. The cement when mixed with twenty-eight per cent (by weight) of water, shall nbt take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. TENSILE STRENGTH. Briquettes one square inch in cross section made of the cement shall show tensile strength not less than as follows: NEAT CEMENT. AGE STRENGTH 24 hours in moist air.. 175 lbs. 7 days(1 day in moist air, 500 lbs. 28 days(1 day in moist air, 27 days in water)........ 600 lbs. 1Zt9i98 ONE PART CEMENT, THREE PARTS STANDARD OTTAWA SAND. AGE. STRENGTH. 7 days 1 day in moist air, 6 days in water) 200 lbs. 28 days (l day in moist air, 27 days in water) 275 lbs. The briquettes shall show no retrogression in strength within the period specified. The sand to be used -for making the concrete shall be free from dust, c-ay, loam, vegetable or other deleterious matter. The grains of sand shall be angular and shall range in size from one -quarter inch down to the finest; but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Winddrifted sand shall not be used. The sand shall be of such quality that the mortar composed of one part of the cement hereinbefore specified and three parts of sand, by weight, when made into briquettes, will develop a tensile strength at least equal to the strength of a mortar of the same consistency'and proportion made with the same cement and Standard Ottawa sand. In no case shall the sand, when used for this concrete, contain frost or lumps of frozen matter. The gravel to be used in making this concrete shall be clean, hard, free from dust, loam, vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable sizes grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (1-4) inch. In no case shall the gravel when used for this concrete contain frost or lumps of frozen matter. The sand and gravel shall be clean when delivered on the job, and shall be kept clean until used. The method used for measuring the ingredients in the concrete shall be one that will insure a uniform proportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be considered one cubic foot. The concrete shall be mixe:d'in a batch machine mixer of a type that will insure a uniform distribution Of the ingredients through- out the mass. Ingredients of the concrete or mortar shall" be mixed to the desired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in cdlor, and homogeneous. Clean water, free from oil, acid, alkali or vege- table matter shall be admitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled with- out causj.ng a separation of the gravel from the mortar. The concrete shall be handled rapidly from the mixer to its place in the pavement. Successive batches. shall be deposited in place on the sub -grade in a continuous operation so that sections of the pavement between expansion joints, hereinafter specified, shall be entirely completed and without the use of intermediate cross forms or bulk -heads. Concrete shall not be retempered or used that has partially hardened. The concrete shall -be compacted and broughtto the established grade and shaped with a template or straight edge, and shall be brought to a comparatively even surface. After the concrete has been so brought to grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even surface. Said roller shall not be less than five feet in length, and not less than eight (8) inches not more than twelve MY inches in diameter and weighing not less than one hundred pounds (100 lbs). The roller shall be operated across the pavement from side to side of same, by means of ropes attached to each side of the roller, at such angle with the center line of the pavement as to permit the roller to advance along the pavement two feet for each time across. After the roller has covered a given area in the mahner described, the same area shall be similarly rolled by the roller for not less than three (3) times at intervals of fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may.be necessary to remove excess. water. 90 After the rolling has been completed the pavement shall be finished bSr two (2) applications of a belt made of canvas, not less than six (6) inches wide and not less than two (2) f.eet longer than the width of the pavement. For the first application, vigorous strokes at least twelve. (12) inches long shall be used. The longitudinal movement of the belt along the pavement shall be very slight. The second application of the belt shall be immediately after the water glaze or sheen disap ears, and the stroke of the belt shall be not more than four (4 inches, and the longitudinal move- ment shall be a continuous forward movement. A suitable bridge to span the width of the pavement shall be used to finish the joints, no part of which shall be in contact with the finished work. A notched straight edge ten (10) feet in length shall be used for testing each transverse joint, prior to and subsequent to final finishing. The straight edge shall be placed over the joint, parallel to the center line of the pavement and moved across from curb to curb. When the surface of the concrete upon testing shows to be high or low, concrete will be added or removed to bring the surface its -true shape. The concrete adjoining transverse joints shall be dense in character and after rollinf shall be finished with a wood float, which is divided through the center and which will permit finishing on both sides of the filler at the same time. The finished surface of the concrete shall not vary more than one -eighth (1-8) of .an inch from.a two foot steaight edge placed "upon the concrete in any position. Workmen shall not walk on the freshly laid concrete; and no one shall be allowed on the concrete after it has been worked in- to form and position with a template or straight edge, until it has thoroughly hardened. EXPANSION JOINTS. Transverse expansion joints not less than three -eighths (3/8) inch or more than one-half (1/2) inch in width shall -be placed across the pavement at right angle to ,the center line of the road- way; spaced so as not to exceed thirty-three and one-third (33 1/3) feet apart. All expansion joints shall extend through the entire thickness of the pavement. In these expanison joints there shall be placed a prepared strip of bituminous filler of the thickness hereinbefore specified for expansion joints and extending from the bottom of the pavement herein specified to the upper surface of the finished pavement. The upper edges of all joints and the upper outer edges of the pavement shall be neatly troweled to a radius of one -quarter (V inch. All metal, manholes catch basin covers, and other fixed objects shall be separated from the concrete pavement by a joint filler of the same character as hereinbefore specified for expansion joints; which joint filler shall extend throught the entire thickness of the pavement. PROTECTION. As soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be sprayed with wat@x; and it shall be kept thoroughly wet for at least ten days. As soon as it can be done without damage to the concrete, the surface thereof, during hot and dry weather and if unshaded shall be covered with not less than one inch of earth, sawdust, straw or other suitable and available material, which covering shall be kept wet for at least four days after being placed. In drys and hot weather freshly laid concrete shall be protected by a canvas covering until it can be sprinkled or covered, as specified. The water and concrete aggregates shall be heated if at any time during the progress of the work the temperature is, or from IZ 0198 weather reports will likely during the nest twenty-four hours 9 drop to (35) thirty-five degrees Fahrenheit. Teh concrete shall be'protected against freezing for at least ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established line, and their upper edges shall conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have previously been used. The pavement shall be thoroughly cleaned and open to the public as soon as the cement has set sufficiently to receive the traffic without injury to the surface or body of the concrete. CATCH BASINS For the purpose of receiving storm waters from the surface of the pavement herein provided to be constructed three (3) catch basins shall be constructed at the necessary points along the center line of said pavement. Said catch basins shall be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catch basins, when in place, to the upper surface of the proposed pavement. Said catch basins shall be cylindrical in shape having an internal diameter of thirty-pix (36) inches at the bottom and upward to the lowest header course, being uniformly, drawn in to twenty-four (24) inches at the tojof the masonry by means of three (3) header courses of brick, laid endwise and horizontally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catch basins. Said catch -basins shall have walls eight (8) inches thick built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch -basins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one andone-half (1-*) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch -basins shall each rest on a solid bottom of two (2) inch pine planks, laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall . measure fifty-four (54) inches in diameter and sbLall have its upper side placed four (4) feet below the upper surface of the brick Ball for said catch basin. Said catch -basin shall be connected with the sewer, or sewers as the case -may be, now existing, or herein provided to be con- structed, as the case may be, in and along the center line of the said pavement,along which center line and over said sewer or sewers, the respective catch -basins are to be constructed. S ch-basins shall be conneeted with the sewer or sewers afores means of vitrified, salt glazed tile pipe having an interns ORameter of six (6) inches and of the.type known as "Bell and Spigot," the metal of which pipes shall be three -fourths (3/4) of an incg in thickness and shall be not less then two (2) feet in length. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipe shall be securely sealed with a mortar of the quality herein required for brick walls in catch -basins. Each catch -basin connection shall start in a six-inch "Y" branch of the r-ality and laid in the manner required for sewers, which "Y" branch biia.11 be set in the said sewer at a point not less than eight (8) feet in advance of the center of the catch -basin measured along and in the down stream direction of the sewer. The pipe shall be laid true to line and grade and the conncection shall enter the catch- 92 basin through the brick wall thereof at a g point two and one-half (2J) feet above the top of the plank bottom of said catch -basin. The pipe entering the catch basin through the brick wall there- of, shall be elbow with the bell end turned downward inside the catch -basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be back -filled as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the alley. The trenches shall be promptly back -filled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch basins shall each be equipped and fitted with a circular cast iron grate cover weighing not less than three'hundred and sixty (360) pounds. Said grate to be so constructed as to freely admit water from the surface of the pay went to the catch - basin) and having a vertical height of nine (9y inches, the opening in said cover ,shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) inches at the top thereof. The diameter of the lid or grate for said covets shall be 22 3/4 inches. Said catch -basin coversherein provided to be furnished and set shall rest on the walls of the catch -basins herein speci- fied to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in,said catch -basins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the upper surface of the pavement at points where said catch basins are located. Said catch basins herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: One at a point one hundred (100) feet north of north line of Hamilton Street. One at a point two hundred ninety-five (295) feet north of the north line of Hamilton Street. One at a point four hundred fifty-two (452) feet north of the north line of Hamilton Street, MANHOLE TO BE ADJUSTED AND BROUGHT TO GRADE The one brick manhole now located within the space herein provided to be paved, and which are already equipped with cast iron cover,shall have their cover raised or lowered, as the case may be, t6 bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said man- hole as may be necessary to bring the cover of the manhole to the height above specified and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a. mortar composed by volume of one (1) part -of Portland cement of the best quality and one and one-half (11) parts of clean sharp sand mixed with sufficient clean.vrater to give proper plasticity, shall be used. Said cover shall be imbedded in a mortar of the kind and quality required for usetin adjusting said walls. ADJUSTMENT OF PRESENT MACADAM PAVING.ry W , The present macadam paving where the same.adjoinskhllpro= posed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and quality composing said macadam paving and having been thoroughly compacted it shall form a base or foundation for a bi- tuminous macadam pavement to be placed thereon. The upper surface of said base or foundation when completed shall be two (2) inches below the finished grade of the proposed improvement where same adjoins said macadam paving. Upon the base or foundation, prepared as hereinbefore speci- fied, there shall be spread a layer of clean, hard broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and insufficient quantity to insure a thickness of two (2) inches thereof being spread on and used in each and every square yard of the roadway. IZ0198 As soon as practicable of ter t he on the foundation, it shall be given self propelling road roller weighinh initial rolling shall end as soon as to creep under action of the roller. layer of limestone is spread an initial rolling with a not less than ten tons. The the stone is set and ceases As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be applied to the lime- stone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure . not less than one (1) gallon thereof being evenly spread on and used in each and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vege- table cr other deleterious substances, and broken to a size ranging from the largest particle that would pass through a sieve having : circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diameter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately follow- ing the spreading of these limestone screenings the paving so covered, shall be,given a thorough rolling with a roller of the weight and type hereinbefore named. This rolling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the paving shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material there- on, After being so cleaned there shall be applied to the surface a second application of asphaltic cement of the same kips and quality as that used in the first application. This second application shall be sufficient in quantity and so pplied and spread, as to insure not less than three-quarters ('gallon thereof being evenly spread and used on each and every square yard of paving. Immediately after the second application of asphaltic cement is made and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, clean, dry, hard granite chips of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one - eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of paving. A final rolling of -the paving shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the pavement is thoroughly compacted, and brought to a surface,,free from depressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is oerpating. The asphaltic cement used in the improvement herein pro- vided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meet- ing the following requirements and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural asphalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall 'not be a by-product of the oil refining or gas manufac- turing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so pre- pared for use as to best adapt it to the climatic and traffic con- ditions of the roadway on which it is to be used. MIA (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3). It must have a'penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under'100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be present in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New Yorlt state closed oil tester. (f). 50 grams of the cement upon being maintained at a uniform temperature of- 325 degrees Fahrenheit for five hours in a cylindrical vessel two.and-one-half inches in diameter, shall not lose more than two (2) per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7). It shall be soluble in chemically pure carbon disul- phide at air temperature to the extent of at least 95%. (8) . Of the bitumen of the' asphaltic cement which is soluble in carbon disulphide at least 9&Wo shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble � in petrol- eum naptha, at the air temperature to the extent of not less than 72 per cent. (10), Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more 15 per cent of fixed carbon or residue coke. 14ISCELLANEOUS SPECIFICATIONS. BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND. All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable .or other deleterious matter nor more than three (3) per cent, by weight of clay.Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand 'shall be of such quality that mortar composed of one part of the cement here- in specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of -frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from veget- able or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such quality that representative 110198 95 samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit: FINENESS. The cement shall be so ground that'92% will pass through a standard sieve, having 10,000 meshes and 7% will pass through a sieve having 40,000 meshes per square inch. SOUNDNESS. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air,protected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking,warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. SETTING. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. TENSILE STRENGTH. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: NEAT CEMENT. Age. Strength. 24 hours in moist air ......................... 175 lbs. 7 days lday in moist air, 6 days in water).. 500 lbs. 28 days day in moist air, 27 days in water) 600 lbs. ONE PART CEMENT, THREE PARTS STANDARD OTTAWA SAND. Age Strength. 7 days (1 day in moist air, 6 days in water). 200 lbs. 28 days 1 day in moist air,27 days in vrater). 275 lbs. The briquettes shall show no retrogression in strength within the period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE. The tile pipe to be used in the improvement herein provided to be made shell be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be -imposed upon it from within^ or without. Said pipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as f o llows : For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13/16) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch All the material used -in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall b6 used., and all necessary labor shall be performed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this 46 ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston providing for said improve- ment together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum ofthree hundred nineteen and twenty- six hundredths dollars ($319.26), being the mlount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with- an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improve- ments," Approved June 14th, A. D. 1897, L.nd the amendments thereto,. and that said sum of three hundred nineteen and twenty-six hundred- ths dollars 4319.26) shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into five installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six percentum per annum according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement,•bonds shall be issued payable out of said install- ments bearing interest at the rate of six per^centum per annu;i, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all re- spects conform to the provisions of the Act of the Geberal Assembly of the State of.Illinois, entitled, "An Act Concerning Local Im- provements," approved June 14th, A. D. 1897, and the amendments there- to. Section 6. That the Corporation Counsel -be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of -this ordinance and in the manner prescribed by law. Section 7. That all ordinances or parts of ordinances con- flicting v;ith this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 19th day of September A. D. 1922. Approved Sept. 20th, 1922. JOHN F. HAHN, H. P. PEARSONS, City Clerk. VFAYOR . IZ19198 97 RECOMPJMNDATION, ESTIMATE AND ORDINANCE. RECOMMENDATION..BY:BOARD_OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: 'We heresl;ith submit an ordinance providing that the Public Alley, extending from the north line of Lee Street to the south line of Greenleaf Street, in Block four (4) in the Subdivision of Blocks•four (4);-five (5) and six (6), Vhite's Addition to Evanston, in the Northeast one -quarter U) of Section nineteen (19), Township forty-one (41) North, Range fourteen (14) East of the Third (3rd) Princi- pal Meridian, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland cement concrete pavement, using a bituminous filler strip for expansion joints in pavement, con- structing necessary surface drainage sewers, catch basins, catch basin connections to surface drainage sewers and manhole, adjusting manhole and r nd macadam paving adjoining and connecting with the proposed im- provement; together with an estimate of,the cost of said -improvement and recoomed the passage of said ordinance and the making of the improvement contemplated therein. Respectfully submitted, H. P. PEARSONS Wm BLANCHARD HAL W..SMITH, Board -of Local Improvements of the City of Evanston, Illinois. Dated,Evanston, Illinois September 19, 1922. ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that the Public Alley, extending from the north line of Lee Street to the south line of Greenleaf Street, in Blcom four (4) in the Subdivision of Blocks four (4), five (5) and six-(6), White's Addition to Evanston, in the North east one -quarter (-•).of Section nineteen (19) , Township forty-one (41) North, Range fourteen (14) East of the Third (3rd) Principal Meridian, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland cement concrete pavement, using a bituminous filler strip for expansion joints in pavement, construct- ing necessary surface drainage sewers, catch basins, catch basin connections to surface drainagesewers and manhole, adjusting man- hole and macadam paving adjoining and connecting with the proposed improvement; and presented to the City Council of the City of Evanston a recommendation that such improvement be made, I herewith submit an estimate of the cost of such improvement as described in said resolution, including labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment, asprovided by law, viz: ESTIMATE OF COST. 260 Cu. yds, of grading @ $1.60 per cu. yd........... 416.00 1470 Sq. yds. of Portland cement concrete paving com- plete in place @ $2.75 per sq. yd................ 4,042.50 425 Lin. ft. of bituminous filler strip for expansion joints in paving, laid complete in place 010X per liri. ft......................................... 42.50 250 Lin. ft. of surface drainage sewers, average depth of Out six (6) feet, including trenching and back filling, laid complete in place © $2.35 per lin ft. 587.50 2 Brick catch basins including cast iron covers, plank bottoms, excavation and back filling, com- plete in place @ $75.00 each........... ............... 150.00 20 Lin. ft. of catch basin connections to surface drain- age sewers, average depth of cut five (5) feet, in- cluding trenching and back filling, laid complete in place @ $1.00 per. lin. f t.......................... 20.00 1 Brick manhole including cast iron cover, excavation and back filling, complete in place ................. 75.00 1 Manhole adjusted to grade ........................... 10.00 90 Sq. yds. of macadam paving adjusted to grade @ $1.20 per sq. yd..........................................108.00 For lawful expenses attending the proceedings for making said improvement and the cost of making and co lle ctin the assessment therefor, not to exceed six per centum (6%� of the above, to -wit: $5,451.50 ........................... 327.09 Total .................. $ 5,778.79 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improve- ment and the lawful expenses attending the same. (Signed) Wm. Blanchard, Engineer of'the Board of Local Imrpovements of the City of Evanston. Dated, Evanston, Illinois. September 19, 1922. AN ORDINANCE. Providing that the Public Alley, extending from the north line of Lee Street to the south line of Greenleaf Street, in Block four (4) in the Subdivision of Blocks four (4), five (5) and six (6), White's Addition to Evanston, in the Northeast one -quarter (J) of Section nineteen (19), Townshi forty-one (41) North, Range fourteen (14) East of the Third (3rd� Proncipal Meridian, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland cement concrete pavement, using a bituminous filler strip for expansion joints in pavement, constructing necessary sur- face drainage sewers, catch basins, catch basin connections to sur- face drainage sewers and manhole, adjusting manhole and macadam paving adjoining and connecting with the proposed improvement. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvement shall be made vd thin the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local im- provement is as follows, to -wit: That the Public Alley, extending from the north line of Lee Street to the south line of Greenleaf Street, in Block four (4) in the Subdivision of Blocks four (4), five (5) and six (6), White's Addition to Evanston, in the Northeast one -quarter (J) of Section nineteen (19), Township forty-one (41) North, Range fourteen (14) East of the Third Ord) Principal Meridian in the City of Eia nston, County of Cook, State of Illinois, be and the same is hereby ordered impm ved as follows: Location of Pavement The center line of the pavement herein provided to be con- structed shall coincide with the center fine of the alley within which said pavement is included. Width of Pavement The width of the pave went hereinprovided to be.constructed shall be nineteen (19) feet. 110198 GRADE OF PAVE10ENT . The grade of upper surface of the finished pavement herein provided to be constructed is hereby established as follows, measured in feet and decimal parts of a foot above the datum of the plane of the City of Evanston, to -wit: Transverse Section oft Alley Outer Edges Center line of Pavement. of Pavement. At the north line of Lee Street. 13.70 At one hundred and fifty(150)feet north of Lee Street. 14.4.0 At two hundred and thirty-seven (237) feet north of Lee Street, 13.50 At four hundred (400) feet north of Lee Street, 14.30 At four hundred and eighty-seven (487) feet north of Lee Street, 13.85 At five hundred and fifty-five (555) feet north of Lee Street, 14.20 At the south line of Greenleaf Street.13.75 ALLEY PAVING. 13.45 14.15 13.25 14.05 13.60 13.95 13.50 The grade of the center line and outer edges of the pavement at intermediate points shall be respectively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane of the low water mark of Lake Michigan in the year A. D. 1847, as established by the Trustees of Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the northwest corner of Davis Street and Sherman Avenue, in said City of Evanston. The upper surface of the pavement herein provided to be con- structed, when completed, shall conform to the arc of a circle passing through the respective grade points in the center line and at the outer edges of the pavement, and shall be true and symmetrical. GRADING. The alley herein provided to be improved shall be cleaned prior to the paving thereof,'in a thorough manner of all deteriorated planking, blocking o: other debris. The soil of the roadway shall then be excavated or filled upon with other suitable soil, as the case may be, to such depth and shape as will bring the upper surface of the finished pavement, when constructed as hereinafter specified, to the elevations and grades hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable self -grades here- inbefore established. The subgrade shall be thoroughly compacted by means of a suitable self-propelling roller or flooding with water as thea case may require. Depressions or holes appearing as the preparation of the subgrade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left in the sub -grade, shall be removed by the contractor without extra charge. CONCRETE PAVEMENT - ALLEY. Upon the subgrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement,composed of Po tland ement, sand and gravle mixed by volume in ratios of one part off cemeni,two parts sand, and three parts of gravel with sufficient clean water to give proper plasticity and in the manner hereinafter set forth. The concrete shall be spread on the 'sub -grade in such quantity and to such form that after being compacted in place it shall have a uniform rhick- ness of six inches. The Portland cement to be used in making this concrete pavement shall be of such quality that representative samples collected from shipments made for• the job shall be capable of passing the following tests for fineness, soundness, initial setting, and tensile strength, 100 to -wit: FINENESS. The cement shall be ground so that 920o will pass through a standard sieve, having 10,000 meshes and 75% will pass a sieve having 40,000 meshes per square inch. SOUNDNESS. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, protected by a•damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquette of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified for the neat pat. SETTING. The cement when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. TENSILE STRENGTH. Briquettes one square inch in cross section made of the cement shall show tensile steength not less than as follows: NEAT CEMENT. AGE STRENGTH. 24 hours in moist air... 175 lbs. 7 days (lday in moist air,-6 days in water)........... 500 lbs. 28 days (1 day in moist air, 27 days in water........... 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand. AGE. STRENGTH. 7 days 1 day in moist air, 6 days in water) . . . . .•. . ..6 200 lbs. 28 days day in moist air, 27 days in water)........ 275 lbs. The briquettes shall show no retrogression in strength within the period specified. The sand to be used for making the concrete shal 1 be free from dust, clay, loam, vegetable or other deleterious matter. The grains, of sand shall be angular and shall range in size from one -quarter inch down to the finest; but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind -drifted sand shall not be used. The sand shall be of such quality that the mortar composed of one part of the cement hereinbefore specified and three parts of sand, bty weight, when made into briquettes, will develop a tensile strength of a mortar of the same consistency and proportion made with the same cement and Standard Ottawa sand. In no case shall the sand, when used for this concrete, contain frost or lumps of frozen matter. The gravel to be used in making this concrete shall be clean, free from dust, loam vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravle shall be of variable sizes grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (f) inch. In no case shall the gravel -when used for tkiis concrete contain frost or lumps of frozen matter. The sand and gravel shall be clean when delivered on the job, and shall be kept clean until used. The method for used for measuring the ingredients in the con- crete shall be one that will insure a uniform proportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be considered one cubic foot. The concrete shall be mixed in a batch machine mixer of a type that will insure a uniform distribution of the ingredients through- out the mass. Ingredients of the concrete or mortar shall be mixed to the desired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in color, and homogeneous. Clean water,free from oil, acid, alkali or vegetable i-Zi9i98 01 matter shall be admitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled with- out causing a separation of the gravel from the mortar. The concrete shall be handled rapidly from the mixer to its place in the pavement. Successive batches shall be deposited in place on the sub -grade in a continuous operation so that sections of the pavement between expansion joints, hereinafter specified, shall be entirely completed and without the use of intermediate cross forms or bulk -heads. Concrete shall not be retempered or or used that has partially hardened. The concrete shall be com- pacted and brought to the established grade and shaped with a template or straight edge, and shall be brought to a comparatively even surface. After the concrete has been so brought to grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even surface. Said roller shall not be less than eight (8) inches nor more than twelve 12) inches in diameter and -weighing not less than one hundred ROO) pounds. The roller shall be operated across the pavement from side to side of same, by means of ropes attached to each side of the roller, at such angle with the center line of the pavement as to permit the roller to advance along the pavement two feet for each time across. After the roller has covered -a given area in the manner described, the same area shall be similarly rolled by the roller for not less than three (3) times at intervals of fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may be necessary to remove excess water. After the rolling has been completed the pavement shall be finished by two (2) applications of a belt made of canvas, not less than six (6) inches wide and not less than two (2) feet longer than the width of the pavement. For the first application, vigorous strokes at least twelve (12) inches long shall be used. The longitudinal movement of the belt along the pavement shall be very slight. the second application of the belt shall be immediqtely after the water glaze or sheen disappears, and the stroke of the belt shall be not more than four (4) inches, and the longitudinal move- ment shall be a continuous forward movement. A suitable bridge to span the width of the pavement shall be used "'o finish the joints, no part of which shall be in contact with the finished work. A notched straight edge ten (10) feet in length shall be used for testing each transverse joint prior to and subsequent to final finishing. The straight edge shall be placed over the joint, parallel to the center line of the pavement and moved across from curb to curb. When the surface of the concrete upon testing shows to'be high or low, concrete will be added or removed to bring the surface its true shape. The concrete adjoining transverse -joints shall be dense in character and after rolling shall be finished with a wood float, which is divided through the center and which will permit finish- ing on both sides of the filler at the same time. The finished surface of the concrete shall not vary more than one -eighth (1-8) of an inch from,atwo foot straight edge placed upon the concrete in any position. Workman shall not walk on the freshly laid concrete; and no one shall be allowed on the concrete after it has been worked into form and position with a template or straight edge, until it has thoroughly hardened. EXPANSION JOINTS. Transverse expansion joints not less than three -eighths (3/8) inch or more than one-half (J7) inch inwidth shall be placed across the pavement at right angle to the center line of the roadway; spaced so as not to exceed thirty-three and one-third (33-1/3) feet apart. All expansion joints shall extend through the entire thick- 102 ness of the pavement. In these expansion joints there shall be placed a prepared strip of bituminous filler of the thickness _. hereinbefore specified for expansion joints and extending from the bottom of the pavement herein specified to the upper surface of the finished pavement. The upper edges of all joints and the u,)per outer edges of the pavement shall be neatly troweled to a radius of one -quarter (-J) inch. All metal, catch basin covers, and other fixed objects shall be separated from the concrete pavement by a joint filler of the same character as hereinbefore specified for expansion joints; which joint filler shall extend through the entire thickness of the pavement. t� PROTECTION As soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be sprayed with water; and it shall be kept thoroughly wet for at least ten days. As soon as it can be done without damage to the concrete, the surface thereof during hot and dry w eather and if unshaded shall be covered with not less than one inch of earth, sawidust, straw or other suitable and available material, which covering shall be kept wet for at least four days after being placed. In dry and hot weather freshly laid concrete shall be protected by a canvass covering until it can be sprinkled or covered, as specified. ORDINANCE AND CONTRACT FORM (C) The water and concrete aggregates shall be heated if at any time during the progress of the work the temperature is, or frCM weather reports will likely durixig the next twenty-four hours drop to (35) thirty-five degrees Fahrenheit. The concrete shall be protected against freezing for at least ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, freefrom warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established line, and their upper edges shall. conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have previously been used. The pavement shall 'be thoroughly cleaned and open to the public as soon as the cement has set sufficiently to receive the traffic without injury to the surface or body of the concrete. SURFACE DRAINAGE SYNVERS For the purpose of carrying off storm waters from the surface of the pavement herein provided to be constructed, surface drainage sewrers of vitrified, salt glazed tile pipe shall be laid as hereinafter specified. Said sewers shall be laid in open trenches in the ground in such manner as to conform to the elevations, lines and grades hereinafter speci fied. The pipe used in the construction of said sewers shall be of the type known as "Bell and Spigot" having an internal diameter of nine (9( inches, the metal of which pipe shall have a thickness of thirteen -sixteenths (13/16) of an inch and shall be not less than two (2) feet in length, cylindrical, straight, smooth, thoroughly vitrified, salt glazed, free from cracks or blisters and of the best quality and workmanship. The joints between the pipes shall be securely sealed with a mortar composed by volume of one (1) post of Portland cement of the best quality and one and one-half (12) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The joints between said pipes shall be wiped and pointed inside the pipes. The interior of the pipes shall be kept free from dirt or refuse of every description and shall be left clean at the completion of the work. `i 0198 103 The open trenches excavated to receive said sewers, shall be made at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing joints. The materials excavated shall be kept compactly along the sides of the trench and shall be backfil.led as soon as practicable in order to occasion the least possible inconvenience to the public in the use of the street or alley as the case may be. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. The open and unconnected ends of said sewers shall each be securely clOsed with a salt glared vitrified tile disc, and sealed in the manner above specified for joints between pipes. Said sewer or sewers as the case may be shall be laid ,as follows, to -wit: (1) . In and along the center line of said alley from and con- necting with -the sewer now in place along said center line at a point one hundred and thirty-five (135) feet north of the north line of Lee Street to a point two hundred and thirty-seven (237) feet north of the north line of Lee Street. The internal diameter of said sewer shall be nine (9) inches. At its con- nection Frith the aforesaid sewer, the elevation of the inside bottom of this sewer shall be eight and ,six -tenths (8.6) feet above the datum plane hereinbefore defined and the grade thereof shall rise thence at a uniform rate to an elevation of nine (9) feet abcve said,datum plane at its terminus. (2). In and along the center line of said alley from and con- necting with the sewer now in place along the center line of Greenleaf Street to a point one hundred and fourteen (114) feet south of the south line of Greenleaf Street. The internal diameter of this sewer shall be nine (9) inches. At its con- nection with the last named sewer the elevation of the inside bottom of this sewer shall be eight (8) feet above said datum plane and 'the grade thereof shall rise thence at a uniform rate to an elevation of nine (9) feet above said datum plane at its terminus. CATCH BASINS For the purpose of receiving storm waters from the Surface cf the pavement herein provided to be constructed two (2) catch basins shall be constructed at the necessary points along the center line of said pavement. Said catch basins shall be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required =^or said catch basins:, when in place, to the upper surface -of the -proposed pavement. Said catch basins shall be cylindrical in shape having an internal diameter of thirty-six (36) inches at the bottom and upward to the lovaest header course, being uniformly drawn in to twenty-four (24) inches at -the top of the masonry by means of three (3) header courses of brick, laid endwise and horizontally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catch basins. Said catch -basins shall have malls eight (8) inches thick built (except as above specified for header courses.) of alternate vertical and horizontal courses. The brick used in the construction of said catchbasins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1-) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry jo=nts shall be neatly pointed and made secure against leakage. Said catch -basins shall each rest on a solid bottom of two (2) inch pine plants laid closely in single thickness and securely spiked to two t2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure fifty-four (54) inches in diameter and shall have its upper side placed four (4) feet below the upper surface of the brick wall for said catch -basins. 104 Said catch -basins shall be connected with the sewer, or sewers as the case may be, now existing, or herein provided to rconstructed, as the case may be, in and along the center line the said pavement, along which center line and over said sewer or sewers, the respective catch -basins are to be constructed. Said catch -basins shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed the pipe having an internal _diameter of six (6) inches and of the type known as "Bell and Spigot", the metal of which pipes shall be three fourths (-) of an inch in thickness and shall be not less than two (2) feet in length. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipe shall be securely sealed with a mortar of the `quality herein required for brick walls in catch basins. Each catch -basin connection shall start in a six-inch "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the said sewer at a point not less than eight (8) feet in advance of the center of the catch - basin measured along and in the doom stream direction of the sewer. The pipe shall be laid true to line and grade and the connection shall enter the catch -basin through the brick wall thereof at a point two and one-half (22) feet above the top of the plank bottom of said catch -basin. The pipe entering the catch basin throught the brick wall thereof, shall be an elbow with the bell end turned downward inside the catch -basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the oipes for sealing the joints. The ni%terials excavated shall be kept compactly along the sides of the trenches and shall be back -filled as soon as practicable, in order to occasion the feast possible inconvenience to the public in use of the alley. The trenches shall be promptly back -filled to a depth of ,twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch -basins shall each be equipped and fitted with a circular cast iron grate cover weighing not less than three hundred and sixty (360) pounds. Said grate to be so constructed as to freely admit water from the surface of the pavement to the catch -basin and having a vertical height of nine (9) inches, the opening in said cover shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) inches at the top thereof. The diameter of the lid or grate for said covers shall be 22J inches. Said catch -basin covers herein provided to be furnished and set shall rest on the walls of the catch-badns herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catch - basins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the upper surface of the pavement at points where said catch -basins are located. Said catch -basins herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: One at a point two hundred thirty-seven (237') feet north of the north line of Lee Street. One at a point four hundred eighty-seven (487) feet north of the north line of Lee Street. One brick manhole shall be built of hard burned sewer brick, upon the sewer or sewers, as the case may be, hereinbefore provided to be constructed and shall be located at the point hereinafter specified. Said manhole shall be placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbefore specified in such manner as to bring the top of the iron cover herein required for said manhole when in place to the upper surface of the proposed pavement. Said manhole shall. be cylindrical in shape having an internal diameter of thirty-six (36) inches at the upper surface of the base and upward to the lowest header course being uniformly drawn in to twenty-four (24) 1Zt9198 105 inches in diameter at the top of themasonry by means of six (6) header courses of -brick laid endwise and horizontally, the diammeter being decreased uniformly by each course to fit the iron cover hereinafter specified to be furnished and set on the vialls of said manhole. The wall of said manhole shall rest upon the base thereof without offsetting and shall be eight (8) inches thick, built (except as above specified for header courses) of alternate vertical and horizontal courses of brick. The brick used in the construction of said manhole shall be thoroughly wetted with water before being placed and shall be laid in a mortar comxosed•by volume of one (1) part of Portland cement of the best quality and one and one-half (?) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manhole shall begin at a point five (5) inches below the outside bottom of the sewer hereinbefore specified and shall extend upward to said outside bottom and along the sides of said sewer to a point midway between the top and bottom of said sewer, said base to be circular in form, the diameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manhole shall be neatly removed leaving the lower half thereof to form the invert of the man- hole. Said manhole shall each be equipped with a circular castiron cover having a tight lid, weighing not less than five hundred and forty (540) pounds, of the type known as "Chicago City Standard heavy" having an extreme height of nine 9) inches and having an internal diameter of twenty-four 24) inches at the base and twenty-two (22) and three fourths) inches at the top thereof. Said manhole cover herein specified to -be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the top of the walls of said manhole, which walls shall be built to such height as will bring the top of the cover when set in place, to the surface of the pavement hereinbefore specified. Said manholes herein provided to be' constructed, referring to the vertical acis thereof, shall be located as follows: On the center line of the alley, (herein provided to be paved) at a point one hundred (100) feet north of the north line of -Lee Street. MANHOLES TO BE -ADJUSTED AND BROUGHT TO GRADE. The one brick manhole now located within the space herein provided -to be paved, and which is already equipped with a, cast iron cover shall have the cover raised or lowered, as the case may be, to bring the top thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said manhole as may be necessary to bring the cover of the manhole to the height above specified and also to insure a safe and serviceable roadway. In malting said adjust- ment, hard burned serer brick laid in a mortar composed by volume of one (1) past of Portland cement of the best quality and one and one-half (1H parts of clean sharp sand mixed with sufficient clean water to -give proper plasticity, shall be used. Said cover shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. ADJUSTMENT OF PRESENT MACADAM PAVING. The present macadam paving where the same adjoins the proposed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and quality composing said macadam paving and having been thoroughly compacted it shall form a base or foundation for a bituminous macadam pavement to be placed thereon. The upper surface of said base or foundation when completed s1}all be two W inches below the finished grade of the proposed improvement where same adjoins said macadam paving. 106 Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of two (2) inches thereof being; spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be applied to the limestone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one (1) gallon thereof being evenly spread on and used in each and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the salne shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size ranging from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diameter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stome to which same is applied. Immediately following the spreading of these limestone screenings the paving so covered, shall be given a thorough rolling with a roller of the weight and type hereinbefore named. This rolling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the paving shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material liherebn. After being so cleaned there shall be applied to the surface a second application of asphaltic cement of the same kind and quality as that used in the first application. This second ap- plication shall be sufficient in quantity and so applied and spread, as to insure not less than three-quarters (i) gallon thereof being evenly spread and used on each and. every square yard of paving. Immediately after the second application of asphaltic cement is made .and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, clean, dry, hard granite chips of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension'of one -eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of paving. A final rolling of the paving shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the pavement is thoroughly compacted, and brought to a surface, free from de- pressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement shall be filled, v.s the rolling continues, with the same respective hind of stone as that on which the roller is operating. The asphaltic cement used in the improvement herein pro- vided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following requirements and of passing the following tests, to -wit: (1) The asphaltic cement shall consist of not less ttan sixty-five per cent refined, solid natural asphalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall net be a by-product of the oil refining or gas manuf ac- turkng industries. It shall be similar in character to that used tZ0195 107 successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so pre- pared for use as to best adapt it to the climatic and traffic con- ditions of the roadway on which it is to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penatration between 5 and 10 milli- meters at 77 degrees Fahrenheit under 100 grams for five seconds, and must nct be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 grams for one minute. (4). It shall be practically free from water, decompos- tion products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be present in homogeneous solution, no granular constituent being present. (5) . It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight' and the penetration of the residue shall not be leas than one-ha.lf that tested as above described. (7). It shall be soluble in chemically pure carbon disul- phide at air temperature to the extent of at least 950. (8). Of the bitumen of the asphal-tic cement which is soluble in carbon disulphide at least 98j%o shall be soluble in cold carbon to rachloride. (9). The bitumen of the cement shall be soluble in petroleum naptha, at the air temperature to the extent of not less than 72 per cent, (10).. Upon ignition, the bitumen of the cement shall yield not less than. 9 per cent nor more than 15 per cent of fixed carbon or residue coke. MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and man- holes and in adjusting c atchbaoins , manholes and valve chambers for this improvement shall be hard burned sevier brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent _of ,said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5 per cent of said sand shall pass a sieve having one hundred (100 meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement -and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of forzen matter. 108 CRUSHED STOITE OR GRAVEL. All crushed limestone or gravel to be used in the im- -_provement herein provided to be made shall be tough, durable, free .from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. POR TLAND CEi4H+ IT The Portland cement to be used in the improvement herein provided to be made shall be of such quality that representative samples selected from shipment shall be capable of passing the fol- lowing tests for .f.J neness, soundness, initial setting and tensile strength to -wit: FINENESS. The Cement shall be so ground .that 92 o will pass through a standard sieve, having 10,000 meshes and 75 o will pass through a sieve having 40,000 meshes per square inch. SOUNDITESS. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass,: shall remain in the air, protected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, z!arping or swelling. Broken browuettes of the neat cement .which have remained in air one day and in Crater sir, days shall likewise withstand the steaming and boiling specified to the neat pat. SETTING. The cement, when mixed with twenty-eight per- cent (by weight) of water, s#iall not take initial set in less than thirtiT minutes . It shall not develop hard set in less than one nor more than ten hours. TENSILE STRENGTH. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Age Neat Cement - Strength 24 hours in moist air . . 0 175 lbs. 7 days1 day in moist air, 6 days in water) 500 " 28 days �1 day in moist air, 27 days in water) 600 " One 'Dart cement. Three Darts Standard Ottawa Sand 7 days (1 day in moist air, 6 days in water) 200 lbs. 28 days 1 day in moist air, 27 days in water) 275 " The briquettes shall show no retrigression in strength within the period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such -time and place as will enable recuired tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the: maker; and shall be thoroughly protected against (femage until used. SEVIER PIPE The tile pipe to be used in the improvement herein pro- vided to b e made shall be of the bell and spigot type. Said pipe shell be cylindrical, straight, smooth, sound, thoroughly vitrified, _salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said pipe shall give a clear ring when lightly struck with a mason's harmer. Said pipe shall be not less than two (2) nor more than three. (3) feet in length. The thiclmess of the metal of which pipe shall be re- spectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13/16) of an inch. For pipe having an internal diameter of twekve (12) inches not less than one (1) inch. I� � 198 All the material used in the construction of the im- provement herdnbe.fore specified shall be of the best quality and of a Mind especially adapted for. the purpose for which it shall be used, and all necessary labor shall' be performed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under .the su-nerintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston providing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be -and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of three hundred twenty-seven and nine Hundredths dollars ($327.09) being the amount included in the estimate of said engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitles "An Act Concerning Local Improvements," Approved June 14th, A.D. 1897 and the amendir_ents thereto, and that said sum of three hundred twenty- seven and nine hundredths dollars ($327.09) shall be applied toward the cost of making,: -:levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into five_ installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to lase until -paid. Section 5. And for the purpose of anticipating the col- lection of the second and subsequent installments of said assess- ment for said improvement, bonds shall be issued bayable but of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shell in all respects conform to the provisions of the Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements", approved June 14th, A.D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner prescribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanstdn on the 19th day of Sept. A.D. 1922.. Approved: Sept. 20th, 1922. John F. Ha -in, H.P.' Pearsons, City Clerk. May or . 110 REC UAM-NiDJUION, ESTIMATE AND ORDINIdITCE RECONG.E,15DAT I ON BY BOARD OF LOCAL IhM_ ROVMTT,!TTS . To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: We herewith submit an ordinance providing that the :roadway of HURD A�rEATUE from a point ten (10) feet south of the 'north line of Harrison Street to a point ten (10) feet north of the south line of CENTRAL, STREET, also the roadway of the in- tersecting alley lying within said portion of said HURD AVENUE and not included in the roadway thereof, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, curbing with a Portland Cement Concrete curb, paving with a bituminous macadam pavement laid on a Portland Cement Concrete base or ..f- foundation, constructing catch basins and catch basin connections to sewer, adjusting manholes and catch oasins, together with an estimate -of the cost of said improvement and recommend the passage of said ordinance and the making of the improvement contemplated therein. Respectfully submitted, H.P. PEARSOiTS, +FIAT . PM.UTC HARD , HAL W. SMITH; Board of Local Improvements of,, the City of Evanston, Illinof`s. Dated, Evanston, Illinois, September 19, 1922. EST 1,1 ATE OF ENGINEER OF BOARD OF LCCAL IIIPROVEMIE!,NTS To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that the roadway of HURD AVENUE from a point ten (10) feet south of the north line ©f HARRISON STREET to a point ten (10)) feet north of the south line of CENTRAL STREET, ET, also , the roadway of the intersecting alley lying within said portion of said HURD A`rliNUE and not included in•the roadway thereof, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, curbing with a Portland Cement Concreto curb, paving with a bituminous macadam pavement laid on a Portland Cement Concrete base or foundation, constructing catch basins and catch basin con- nections to sewer, adjusting manholes and catch basins; and pre- sented to the City Council of the City of Evanston a recommendation that such improvement be made, I herewith submit 'an estimate of the cost of such improvement as described in said resolution, including labor, material and -lawful expenses attending the proceedings for makingsaid improvement and the cost of making and collecting the assessment, as provided by lair, viz: ESTIMATE OF COST 784 Cu. yds. of grading ® $1.60 per cu. yd. $ 1,254.40 1380 Lin. ft. of Portland cement Concrete curb laid complete in place ® $1,.25 per lin. ft. . . . . . 1,725.00 1855 Sq.- Yds. •of, Portland Cement Concrete base or foundation laid complete in place @ $] .80 per sq. yd. 3,339.00 1855 Sq. yds. of Bituminous macadam paving laid com- plete in place ® $1.59 per sq. yd. 2,782.50 2 Brick catch basins including cast iron covers, plank bottoms, excavation and back filling com- plete in place ® $75.00 each 150.00 30 Lin. ft. of catch basin connections to sewer, -average depth of cut five (5) feet, including trenchin and back filling, laid complete in place ® 1.00 per lin. ft. 30.00 3 manholes adjusted @ $10.00 each . 30.00 4 Catch basins adjusted 6 $10.00 each 40.00 IZ 0198 For lain ful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment therefor, not to exceed (6%) of the above, to -wit: $9,350.90 561.05 T o tal 99911.95 --- Jg4PW, . a! 1.11 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improve- ment and the lawful expenses attending the same. Wm. Blanchard, Engineer of the Beard of Local Im- provements of the City of Evanston. 'Dated, Evanston, -Illinois, September 19, 1922. AN ORDINANCE Providing that the roadway of HURD AVENUE from a point ten (10) • feet scuth of the north line of HARRISON STREET to a point ten (10) feet north of the south line of CENTRAL STREET, also the roadway of the intersecting alley lying within _ aid portion of said HURD AVENUE and not included in the roadway thereof, in the City of Evanston; County of Cook, State of Illinois, be improved by grading, curbing with a Portland Cement Concrete curb, paving with a bituminous macadam pavement laid on a Portland Cement - - Concree base or foundation, constructing catch basins and catch -basin connections to server, adjusting manholes and catch basins. BE IT ORDAIPIED BY THE CITY C OUNCIL OF THE CITY OF EVAITSTON: SECTION 1. That a local improvement shall be made within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of vrhich local im- provement is as follows, to -wit: That the roadway of HURD AVENUE from a point ten (10) feet south of the north line of HARRISON STREET to a point ten (10) feet ncrth of the south line of CENTRAL STREET, also the roadway pf the intersecting alley lying within said portion of said HURD AVENUE and not included in the roadway thereof, in the City of Evanston, County of Cool:, State of Illinois, be and the same is hereby ordered improved as follows: LOCATION OF ROADWAYS The center line of the roadways herein provided to be paved shall coincide with the center line of the respective streets and alleys within which said roadways are included. WIDTH OF ROADWAYS. The width of the roadways herein provided to be paved shall be as follows, measured in feet from back to back of the curb hereinafter specified and at right angles to the center line of the respective street or alley, as the case may be, to -wit: Roadway of Hurd Avenue. At ten (10) feet south of the north line of Harrison Street. 24 feet A;, ten (10) feet north of the south line of Central Street. 24 feet Roadway of Intersecting Alley. A. the east line of Hurd Avenue 16 feet At the west line of Hurd Avenue 16 feet The width of roadway at intermediate points shall be respectively proportional to the foregoing. GRADE OF ROADWAY AND CURB The grade of the roadways herein provided to be paved, 112 when finished, and the grade of the top of the curb hereinafter specified,.5vdien completed and set in place, are hereby established as follows, measured in feet and decimal parts of a foot above , the datum plane of the ' City of Evanston, to -wit: Transverse Section of Roadway. Crown Gutter Top of Line Line curb Hurd Avenue: At ten (10) feet north of -the south line of Central Street 28.70 28.30 AT one hundred ten (110) feet south of the south line of Central Street. 28.40 27.65 At one hundred forty-eight (148) feet south of the south line of Central Street 28.60 28.20 At a point two hundred sixty-eight (268) feet south of the south line of Central Street. 28.20 27.45 At a point three hundred eighty-eight (388) feet south of the south line of Central Street. At a point five hundred four (504) feet south of the south line of Central Street. At a point ten (10) feet south of the north line of Harrison Street Roadway of Intersecting Alley: At the wrest line of Hurd Av. At the east line of Hurd Av. 28.60 28.25 28.20 27.45 28.40 28.00 29.15 28.70 29.15 28.70 28.55 28.40 2.8.45 28.20 28.50 28.20 28.25 28.95 28.95 i The grade of the crown line, gutter line and top of curb at intermediate points shall be respectively proportional to the foregoing. ' The datum plane hereinafter mentioned is the plane of low water mark of Lake Michigan in the year A. D., 1847, as established by the Trustees of the Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the north -vest corner of Davis Street and Sherman Avenue, in said City of Evanston. The crown line hereinbefore mentioned shall be identical with the center line of the respective road- ways when completed. The gutter line hereinbefore mentioned shall be identical with the line where the surface of the road- ways when completed touches the face of the curbing on both sides of the respective roadways. The surface' of the roadways herein provided to be paved when completed shall conform to the arc of a circle passing through the respective crown and gutter lines, and shall be true and symmetrical. GRADING Prior to laying down the pavement thereon, the roadways specified to be paved shall be cleaned in a thorough and workmanlike manner of all debris and rubbish, such as deteriorated pavements, crossings, box drains, culverts, stumps, etc. The sub -grade shall be prepared by excavating the soil, or filling thereupon I with other and suitable soil to such depths and shapes as will insure the finished pavement being at the grade established therefor. Spongy earth that is unfit to be left in the sub -grade shall be removed by the con- tractor without extra charge. The sub -grade shall be rolled with a suitable self-propelling roller or flooded with water, or both as may be found necessary and practicable to thoroughly compact same. Any depressions that may appear as the rolling or flooding of the sub -grade progresses shall be filled upon at the surface with suitable soil and thoroughly com- pacted as before specified. 110198 113 Ordinance or Contract (a) For[n: Paving. CONCRETE CURB A concrete curb shall be constructed on both sides of the respective roadways herein provided to be paved. Said curb shall consist of a mixture, by volume, of one part of Portland cement, two parts of sand and four parts of crushed gravel or stone. Except that the top and exposed roadway face of the curb shall be surfaced to a depth of one-half inch with a mortar composed of two parts of Portland cement and three parts of clean, sharp sand of the sizes and quality hereinafter specified for the sand to be used in making this curb.' The crushed gravel or stone specified for the body of the curb shall be clean, hard, free from dust, loam, vegetable or other deleterious matter, and shall show sharp edged cubical fracturing. This crushed gravel or stone shall be of variable sizes, grading from a maximum dimension of one inch down to a minimum of one-fourth inch, and so proportioned that the particles capable of passing through a screen of three -fourths inch mesh will fill the voids in the particles retained on such size screen, but without more than ten per cent excess of the smaller particles. The sand specified for the curb shall be free from clay, loam, vegetable or other deleterious matter. The grain.shall be angular, and shall range in size from one -quarter inch down to the finest, but not more than 3 per cent shall pass through a seive having (100) one hundred meshes per lineal inch. The sand shall be of such quality that mortar composed of one part of the cement hereinbefore specified and three parts of the sand, by weight, when made into briquetts, will develop a tensile strength at least equal to the strength of a mortar of the same consistency and proportions made with the same cement and Standard Ottawa sand. The Portland cement specified for the curb shall be of such quality that representative samples collected form the shipments made for the job shall be capable of passing the tests for fineness, soundness, initial getting, and tensile strength hereinafter set forth for Portland cement. The sand and crushed gravel or stone shall be clean when.delivered on the job and shall be kept clean until used. In no case shall the sand and crushed gravel or stone when used, contain frost or lumps of froz- en matte:. Forms shall be used in constructing the curb. The forms shall be sound, free from warp, and of suffici- ent strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established lines and grades. Wooden forms shall be thoroughly wetted and metal forms shall be oiled be- fore concrete is deposited against them. All mortar and dirt shall be removed from forms that have pre- viously been used. The ingredients specified for the body of the curb shall be mixed in a batch machine mixer of a type that will insure a uniform mixture and product. Clean water, free from oil, acid, alkali, or vegetable matter shall be admitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the crushed gravel or stone from the mortar. Provided, that on such portions of the work as it may be imprac- ticable to use the machine mixer, thorough and efficient hand mixing will be allowed. The equipment used, if any, for hand mixing shall be as specified for mixing the surfacing mortar. The ingredients specified for the mortar to be used in surfacing the top and exposed roadway face of the curb shall be mixed on a movable, tight iron platform, of ample size to accommodate the manipulations specified, without getting the ingredients off the platform or mixed with dirt. The Portland cement and sand specified for surfacing portions of the curb shall be thoroughly mixed on the platform with hoes or shovels, and until the color becomes uniform, after which sufficient water, of the quality hereinbefore required, shall be gently added, while the mixing continues, to produce a stiff and homogeneous mortar. The concrete and the finishing mortar after being prepared as specified shall be promptly deposited and compacted in the forms, in layers not exceeding six inches in depth. The back of the curb shall be worked with a wade to secure a well filled surface. The front upper edge of the curb shall be rounded to a radius of one and one-half inches in such manner that the planes of the top and roadway face of the curb will be tan- gent to the curve described by said radius. As soon as the cement has sufficiently set, the forms shall be re- moved from the face of the curb; and the face mortar shall be promptly troweled down hard and smooth, drawing the cement from the crushed gravel or stone as little as possible. The gloss shall be removed with - a vvet brush. 414 ..,The curb shall be constructed in sections not less than four feet nor more than six feet in length. In cony "structing the curb, all templates used to form the sections shall be kept perpendicular to the top of the curb. All joints shall be neatly tool finished. The joint marking shall correspond to the joint made by the tem- plates: The curb shall be twenty-four inches in depth, and the thickness shall vary uniformly from six inches at the top to eight inches at the bottom of the curb. The curb shall be built in such manner that the road- way face will be vertical; that the t op will be at the grade hereinbefore established; and that the back of the curb, at the top thereof shall be on the lines hereinbefore established. The curb at intersecting streets and alleys shall be constructed to true curves tangent to the intersecting curb lines proper. The radius of the curve to which the back of the curb shall conform shall be ten feet for intersecting street and six feet for intersecting alley curb lines. Except as above specified, for intersecting street and alley curb lines, the curb shall be constructed paralleled to the center line of the respective road- ways herein provided to be paved. The curb shall be constructed at such distances from the center line of the roadways, herein provided to be paved, as will give the respective width of roadways hereinbefore speci- fied and established, when measured from back to back of curb in the manner and on the lines hereinbefore set forth. Trenches shall be excavated to sufficient width and depth to receive the curb and necessary moulding frames. Wherever other than sandy soil is encountered the curb trenches shall be excavated to a depth of six inches below the bottom of the curb and shall be re -filled to such depth with sand or cinders. The sand or cinders shall be compacted with water or -by hand tampers. The frames shall be securely fastened in place and shall be accurately brought to line and grade before they are filled with concrete. The grade and line to which the frames are to be set shall be such as is necessary to insure the finished curb being true to the lines and grades hereinbefore established therefor. PORTLAND CEMENT CONCRETE FOUNDATION Upon the sub -grade prepared as hereinbefore specified, shall be constructed a Portland cement concrete base or foundation, five (5) inches thick. The concrete shall be composed by volume, of one (1) part of Portland cement; three (3) parts of clean, hard grained, and sharp sand; and five (5) parts of clean, hard limestone or gravel broken or graded so as to yield a range of sizes (in longest dimension) from two (2) inches down to one-half (1-2) inch, and so proportioned as to produce a maximum number and minimum volume of interstices in the aggregate. The concrete shall be prepared by mixing the cement, sand and stone or gravel in an approved batch mixer with sufficient clean water and mixing sufficiently to produce 'a plasticity best suited to the condi- tions of weather and soil. The concrete mixed as above specified, shall be promptly spread on the surface of the sub -grade to the required thickness, and to such shape and grade as will insure the upper surface of the foundation after be- ing thoroughly compacted by rolling or tamping, being parallel with and three (3) inches below the grade hereinbefore specified for the finished roadway. The upper surface of the foundation shall not be troweled smooth but shall be left moderately rough to grip the bituminous macadam pavement specified to be laid thereon. BITUMI\TOUS MACADAM PAVEMENT ` Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard, broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of three (3) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be evenly applied to the limestone ( at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one and three quarters (1 3-4) gallons thereof being evenly spread on and used in each and every square yard of the roadway, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement lereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone �- screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size rang- ing from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diam- eter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screen- ings the roadway so covered, shall be given a thorough rolling with a roller of the weight and type herein - before named. This rolling shall continue until the screenings are driven into, and thoroughly bonded with, ,the layer of stone to which same is applied. I The surface of the roadway shall next be thoroughly cleaned of all loose stone, dirt, leaves or' , foreign material thereon. After being so cleaned there shall be evenly applied to the surface of the pave ri lent' a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread as to insure not less than three quarters (3-4) gallon thereof being evenly spread and used on each and every square yard of road- way. Immediately after the second application of asphaltic cement is made and spread and progressing therewith there shall be evenly. spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one - eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of the roadway. A final rolling of the roadway shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the roadway is thoroughly compacted, and brought to a surface, free from de- pressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement herein provided to be built, shall be filled, as the rolling continues, with the sauce respective kind of stone as that on which the roller is operating. The gutters shall be kept trimmed to the required thickness and grade as the work progresses. The cubic yardage of stone, herein required, shall be verified by measurement of volume thereof in cars, or other conveyances, transporting same to said City, and prior to initial unloading, and shall be fur- ther verified by measured length of dumps and height of grade marks on the work. The stone shall be hauled on to the work in boxes of uniform size and contents and of such shape as to enable an easy and exact determination of the volume contained therein to be made on the site. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following require- ments and of passing the following test§, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural as- phalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used { successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so prepared for use as to best adapted to the climatic and traffic conditions of the roadway on which it is to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. '(3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit un- der 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various Hydrocarbons composing it shall be pres- ent in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95% (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98 /% shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in 75 degrees Baume petroleum naptha, at the air temperature to the extent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than.15 per cent of fixed carbon or residue coke. CATCHBASINS r For the purpose of receiving storm waters from the surface of the roadway or roadways, as the case may be, herein provided to be paved .� o catchbasins shall be constructed at the necessary points along the sides of the afore- said roadway or roadways. Said catchbasins shall be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catchbasins, when in place, to the upper surface of the proposed curbing. Said catchbasins shall be cylindrical in shape having an internal diameter of forty-two (42) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty- four (24) inches at the top of the masonry by means of eight (8) header courses of brick laid endwise and horizon- tally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catchbasins. Said catchbasins shall have walls eight (8) inches thick, built (except as above specified for header courses} of alternate vertical and horizontal courses. The brick used in the construction of said catchbasins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1/) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch - basins shall each rest on a solid bottom of two (2) inch pine planks laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure sixty (60) inches in diameter and shall have its upper side placed five and one-half (S/) feet below the upper surface of the brick wall for said catchbasins. Said catch - basins shall be connected with the sewer or sewers, as the case may be, now existing or herein provided to be con- structed, as the case may be, in and along the center line of the said roadway or roadways at the side of which the respective catchbasins are to be constructed. Said catchbasins shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed, tile pipe having an internal diameter of nine (9) inches and of the type known as "Bell and Spigot" the metal of which pipe shall be thirteen -sixteenths (13/16) of an inch in thickness and shall be not less than two (2) feet in length. Said pipe shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipes shall be securely sealed with a mortar of the quality herein required for brick walls in catch -basins. Each catchbasin connection shall start in a nine (9) inch vitrified, salt glazed, tile pipe "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the sewer at a point not less than six (6) feet in advance of the catchbasin, measured along and in the downstream direction of the sewer from a point on said sever directly opposite the catchbasin. The pipes shall be laid true to line and grade and the connection shall enter the catchbasin at a point two and one-half (2%) feet above the plank bottom. The pipe entering the catchbasin through the brick walls thereof shall be an elbow with the bell end turned downward inside the catchbasin to form a trap. The pipe shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be backfilled as soon as prac- it !1 ticable in order to occasion the least possible inconvenience to the public in use of the street. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed i under and around the pipes. Said catchbasins shall each be equipped and fitted with a castiron cover weighing not less than three hundred thirty (330) pounds and having a vertical height of thirteen (13) inches, which cover shall be of the same size and pattern or equal in size, quality and workmanship to the castiron covers now in use on existing catchbasins in Dempster Street between Ridge Avenue and Dodge Avenue in said City of Evanston. Said catchbasin covers herein provided to be furnished and set shall rest on the walls of the catchbasins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catchbasins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the elevations hereinbefore specified for the top of the curb at the points where said catchbasins are to be located. MANHOLES TO BE ADJUSTED AND BROUGHT TO GRADE The 1�m brick manholes now located within the space herein provided to be paved, and which are already i equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said manholes as may be necessary to bring the covers of the manholes to the height above specified and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one- half (1/) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. CATCH BASINS TO BE ADJUSTED AND BROUGHT TO GRADE The 9;v"j brick catch basins now located along the sides of the roadway or roadways, as the case may be, herein provided to be paved, shall have their covers raised or lowered as the case may be in such manner as to bring the tops thereof to the surface of the adjacent ground. Such adjustments as may be necessary shall be made to the walls of said catch -basins with hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1/) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. Said covers shall be imbedded in mortar of the quality hereinbefore specified in adjusting said walls. Said catch -basins shall be connected to the curbs by means of sewer pipes of the kind, size and quality and laid in the manner hereinbefore specified for pipe used in constructing surface drainage sewers. Openings shall be made in curbs at points of said connections in such manner as to permit free and un- interrupted passage of storm waters, from the surface of the pavement hereinbe.fore specified, to said basins. 1Z191981,17 MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter no r more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength 'of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portlatid cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit. Fineness. The cement shall be so ground that 92 % will pass through a standard sieve, having 10,000 meshes and 75% will pass through a sieve having 40,000 meshes per square inch. 4 Soundness. A, pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the ,period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE } The tile pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said 1pipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than.thirteen- sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. lb- All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Lnprovements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of Five hundred sixty—one and five hundredths dollars ($561.05 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of Five hundred sixty—one and five hundredths dollars ($561.05 ) shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into five installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston, on the 19th day of Sept. 1922. Approved: Sept. 20th, 1922. John F. Hahn, H.P. Pearsons, City Clerk. Mayor. IS tZI.9i98-- - REC UMEDATI ON, ESTIMATE AND ORDINANCE RECO19MIDATION BY n0 ARD OF TOCAL' ITQ)POVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: We hereaith submit an ordinance providing that the Pdblic'Alley, extending from the north line of Kedzie Street to the south .line of Fain Street, in Block ten (10) in the resub- division of Blocks nine (9) and ten (10) in White's Addition to Evanston, in the southeast one -quarter (J) of Section nineteen (19), Township forty-one (41) Norm, Range fourteen (14) East of the Third (3rd) Principal Meredian, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland cement concrete pavement, using a bitu- minous filler strip for expansion joints in pavement, construct- ing necessary surface drainage serer, catch basins, catch basin connections to surface drainage sewer and manholes, and adjusting macadam paving adjoining and connection with the proposed im- provement; together with an estimate of the cost of said im- provement and recommend the passage of -said ordinance and the making of the improvement contemplated therein. Respectfully submitted, H.P. PEARSONS, Wm. Blanchard, Hal W. Smith. Board of Local Improvements of the C City of Evanston, Illinois. Dated, Evanston, Illinois. September 19, 1922. ESTIMATE OF ENGI + +R OF BOARD OF LOCAL IN?ROVEMENTS To the Mayor and Aldermen of the City of Evanston having adopted a resolution that the Public Alley, extending from the north line of Kedzie Street to the south line of Main Street, in Block ten (10) in the resubdivision of Blocks nine (9) and ten (10) in Whit e' a Addition to Evanston, in the southeast one -quarter (J) of Section nineteen (19), Township forty-one (41) North, Range fourteen (14) East of the Third (3rd) Principal Meredi4n, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland cement concrete pavement, using a bituminous filler strip for expansion joints in pavement, constructing necessary surface drainage sewer, catch basins, catch basin connections to surface drainage sewer and manholes, and adjusting macadam paving adjoining and connecting with the proposed improvement; and presented to the City Council of the City of Evanston a recommendation that such improvement be made, I hereby submit an estimate of the cost of such improvement in- cluding labor, material and lawful expenses attending the pro- ceedings for making said improvement and the cost of making and collecting the assessment, as provided by laver, viz: ESTIMATE OF COST 420 cu. yds. of grading @ $1.60 per cu. yd. $ 672.00 1455 sq. yds. of Portland cement concrete paving complete in place ® $2.75 per sq. yd. 4,001.25 380 lin. ft. of bituminous filler strip for expansion joints in paving, laid complete in place ® 10¢ per lin. ft. 38.00 450 lin. ft. of surface drainage sever, average depth of cut six (6) feet, including trenching and back filling, laid complete in place @ $2.35 per 1,057.50 lin. ft. . . . . . . . . . . . . 0" 2 brick: catch basins including cast iron covers, plank bottoms, excavation and back filling, complete in place ® $75.00 each 150.00 20 lin. ft. of catch basin connections to surface drainage sever, average depth of cut five (5) , feet including trenching and back filling, laid complete in place @ $1.00 per lin. ft. 20.00 20 2 brick manholes including cast iron covers, excavation and back filling, complete in place, ® $75.00 each $ 150.00 110 sq. yds. of macadam paving adjusted to grade $1.20 per sq. yd. . . . 132.00 For lawful expenses attending the proceedings for making s,iid improvement -and the cost of making and collecting the assessment therefor, not to exceed six per centum (6%) of the above, to -wit: $6,220.75 373.24 Total $6,593.99 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed im- provement and the lawful expenses attending the same. Dated, Evanston, Illinois, September 19, 1922. Wm. Blanchard, Engineer of the Board of Local Im- provements of the City of Evanston. AN 0 RD INANCE providing that the Public Alley extending from the north line of Kedzie Street to the south line -of Main Street, in Block ten (10) in the resubdivision of Blocks `nine (9) and ten (10) in White's Addition to Evanston; in the southeast one -quarter (i) of Section nineteen (19), Township forty-one (41) North, Range fourteen (14) East of the Third (3rd) Principal Meredian; in the City of Evanston County of Cook, State of Illinois, be improved by grading, paving with a Portland cement concrete pavement, using a bituminous filler strip for expansion joints in pavement,' constructing necessary surface drainage sewer, catch basins, catch basin connections to surface drainage sewer and manholes, and adjusting macadam paving adjoining and connecting with the proposed improvement. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local iE..pro vemen t shall be made within the City of zvenston, County of Cook, State of Illinois., the nature character, locality and descri,)tion of which local improvement is as follows, to -wit: That the Public Alley, extending from the north line of Kedzie Street to the south line of Main Street, in Block ten (10) in the resubdivision of Blocks nine (9) and ten (10) in White's Ad6tion to Evanston, in the southeast one -qua: ter (J) of Section nineteen (19), Towns hi forty-one (41) North, Range" fourteen (14) East of the Third (3M Principal Meredian, in the City of Evanston County of Cook, State of Illinois, be and the same is hereby ordered improved as follows: Location of Pavement The center line of the pavement herein provided to be con- structed shall coincide with the center line of the alley within which said improvement is included. WIDTH OF PAVMTENT The width of the pave-ment herein provided to be constructed shall be nineteen (19) feet. ` Grade of Pavement The grade of the upper surface cf the finished pavement herein provided to be cons ructed is hereby established as follows, mea- our ed in fee and decimal parts of a foot above the datum plane of the City of Evanston, to —lit'.' Transverse Section of Alley At the north line of Kedzie Street At four hundred wighty-one (481) feet south of the south line of Main Street Outer Edges of Pavement 15.80 Center line of Pavement 15.55 16.45 16.20 1zt9i98 121 At four hundred nine (409) feet south of the south line of 1.,!-.in Street 15.95 15.70 At two hundred sixty-four (264) feet south of the south line of Main Street.- 16.70 16.45 At one hundred sixty-three (163 ). feet south of the south line of Main Street 16.00 15.75 At fifty-four (54) feet south of the south line of Pain Street 16.60 16.35 At the south line of Main Street 15.90 15.65 ALLEY PAVING The grade of the center line and outer edges of the pavement at intermediate points shall be respec- tively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane of the low water mark of Lake Michigan in the year A. D. 1847, as established by the Trustees of Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the northwest corner of Davis street and Sherman Avenue, in said City of Evanston. The upper surface of the pavement herein provided to be constructed, when completed, shall conform to the arc of a circle passing through the respective grade points in the center line and at the outer edges of the pavement, and shall be true and symmetrical. GRADING The alley herein provided to be improved shall be cleaned prior to the paving thereof, in a thorough manner of all deteriorated planking, blocking or other debris. The soil of the roadway shall then be ex- cavated or filled upon with other suitable soil, as the case may be, to such depth and shape as will bring the upper surface of the finished pavement, when constructed as hereinafter specified, to the elevations and grades' hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable self- propell.ing roller or flooding with water as the case may require. Depressions or holes appearing as the pre- paration of the sub -grade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left in the sub -grade, shall be removed by the contractor without extra charge. CONCRETE PAVEMENT —ALLEY Upon the .subgrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement, composed of Portland cement, sand and gravel mixed by volume in ratios of one part of cement, two parts sand, and three parts of gravel with sufficient clean water to give proper plasticity and in the manner here- inafter set forth. The concrete shall be spread on the sub -grade in such quantity and to such form that af- ter being compacted in place it shall have a uniform thickness of six inches. The Portland cement to be used in making this concrete pavement shall be of such quality that repre- sentative samples collected from shipments made for the job shall be capable of passing the following tests for fineness, soundness, initial setting, and tensile strength, to -wit: Fineness. The cement shall be ground so that 92 °Jo will pass through a standard sieve, having 10,000 meshes and 757o will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no check- ing, warping or swelling. Broken briquette of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified for the neat pat. Setting. The cement when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air .... . ............................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) .................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. The sand to be used for making the concrete shall be free from dust, clay, loam, vegetable or other deleterious matter. 1-22 The grains of sand shall be angular and shall range in size from one -quarter inch down to the finest; but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind - drifted sand shall not be used. The sand shall be of such quality that the mortar composed of one part of the cement hereinbefore specified and three parts of sand, by weight, when made into briquettes, will de- velop a tensile strength at least equal to the strength of a mortar of the same consistency and proportion made with the same cement and Standard Ottawa sand. In no case shall the sand, when used for this concrete, contain frost or lumps of frozen matter. The gravel to be used in making this concrete shall be clean, hard, free from dust, loam, vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable sizes grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (1-4) inch. In no case shall the gravel -when used for this concrete contain frost or lumps of frozen matter. The sand and gravel shall be clean when delivered on the job, and shall be kept clean until used. The method used for treasuring the ingredients in the concrete shall be one that will insure a uniform proportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be considered one cubic foot. The concrete shall be mixed in a batch machine mixer of a type that will insure a uniform distribution of the ingredients throughout the mass. Ingredients of the concrete or mortar shall be mixed to the de- sired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in color, and homogeneous. Clean water, free from oil, acid, alkali or vegetable matter shall be ad- mitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the gravel from the mortar. The concrete shall be handled rapidly from the mixer to its place in the pavement. Successive batches shall be deposited in place on the sub -grade in a continuous operation so that sections of the pavement be- tween expansion joints, hereinafter specified, shall be entirely completed and without the use of inter- mediate cross forms or bulk -heads. Concrete shall not be retempered or used that has partially hardened. The concrete shall be compacted and brought to the established grade and shaped with a template or straight edge, and shall be brought to a comparatively even surface. After the concrete has been so brought to grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even sur- face. Said roller shall not be less than five feet in length, and not less than eight (8) inches not more than twelve (12) inches in diameter and weighing not less than one hundred pounds (100 lbs.). The roller shall be operated across the pavement from side to side of same, by means of ropes attached to each side of the roller, at such angle with the center line of the pavement as to permit the roller to advance along the pavement two feet for each time across. After the roller has covered a given area in the manner de- scribed, the same area shall be similarly rolled by the roller for not less than three (3) times at intervals of fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may be necessary to remove excess water. After the rolling has been completed the pavement shall be finished by two (2) applications of a belt made of canvas, not less than six (6) inches wide and not less than two (2) feet longer than the width of the pavement. For the first application, vigorous strokes at least twelve (12) inches long shall be used. The longi- tudinal movement of the belt along the pavement shall be very slight. The second application of the belt shall be immediately after the water glaze or sheen disappears, and the stroke of the belt shall be not more than four (4) inches, and the longitudinal movement shall be a continuous forward movement. A suitable bridge to span the width of the pavement shall be used to finish the joints, no part of which shall be in contact with the finished work. A notched straight edge ten (10) feet in length shall be used for testing each transverse joint, prior to and subsequent to final finishing. The straight edge shall be placed over the joint, •parallel to the center line of the pavement and moved across from curb to curb. When the surface of the concrete upon testing shows to be high or low, concrete will be added or removed to bring the surface its true shape. The concrete adjoining transverse joints shall be dense in character and after rolling shall be finished with a wood float, which is divided through the center and which will permit finishing on both sides of the filler at the same time. The finished surface of the concrete shall not vary more than one -eighth (1-8) of an inch from a two foot straight edge placed upon the concrete in any position. Workmen shall not walk on the freshly laid concrete; and no one shall be allowed on the concrete after it has been worked into form and position with a template or straight edge, until it has thoroughly hardened. EXPANSION JOINTS Transverse expansion joints not less than three -eighths (3I8) inch or more than one-half (1I2) inch in width shall be placed across the pavement at right angle to the center line of the roadway; spaced so as not to exceed thirty-three and one-third (33 113) feet apart. All expansion joints shall extend through the entire thickness of the pavement. In these expansion joints there shall be placed a prepared strip of bi- tuminous filler of the thickness hereinbefore specified for expansion joints and .extending from the bottom of the pavement herein specified to the upper surface of the finished pavement. The upper edges of all joints and the upper outer edges of the pavement shall be neatly troweled to a radius of one -quarter (%) inch. 119198 A all All metal, manholes, catch basin covers, and other fixed objects shall be separated from the concrete pavement by a joint filler of the same character as hereinbefore specified for expansion joints; which joint filler shall extend through the entire thickness of the pavement. PROTECTION PLATES As soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be spray- ed with water; and it shall be kept thoroughly vet for at least ten days. As soon as it can be done without damage to the concrete, the surface thereof, during hot and dry weather and if unshaded shall be covered with not less than one inch of earth, sawdust, straw or other suitable and available material, which cover- ing shall be kept vet for at least four days after being placed. In dry and hot weather freshly laid con- crete shall be protected by a camas covering until it can be sprinkled or covered, as specified. The water and concrete aggregates shall be heated if at any time during the progress of the work the temperature is, or from weather reports will likely during the next twenty-four hours drop to (35) thirty- five degrees Fahrenheit. The concrete shall be protected against freezing for at least ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established line, and their upper edges shall conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have previously been used. The pavement shall be thoroughly cleaned and open to the public as soon as the cement has set suffici- ently to receive the traffic without injury to the surface or body of the concrete. SURFACE DRAINAGE SEWERS For the purpose of carrying off storm waters from the surface of the pavement herein provided to be constructed, a surface drainage sewerXof vitrified, salt glazed, tile pipe shall be laid as hereinafter specified. Said sewerKshall be laid in open trenches in the ground in such manner as to conform to the elevations, lines and grades hereinafter specified. The pipe used in the construction of said sewer* shall be of the type known as "Bell and Spigot" having an internal diameter of nine (9) inches, the metal of which pipe shall have a thickness of thirteen -sixteenths (13/16) of an inch and shall be not less than two (2) feet in length, cylindrical, straight, smooth, thoroughly vitrified, salt glazed, free from cracks or blisters and of the best quality and workmanship. The joints between the pipes shall be securely sealed with a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1/ ) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The joints between said pipes shall be wiped and pointed inside the pipes. The interior of the pipes shall be kept free from dirt or refuse of every description and shall be left clean at the completion of the work. The open trenches excavated to receive said sewer, shall be made at least twelve (12) inches wider than the ex- terior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing joints. The materials excavated shall be kept compactly along the sides of the trench and shall be backfilled as soon as practic- able in order to occasion the least possible inconvenience to the public in use of the street or alley as the case may be. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. The open and unconnected ends of said sewer# shall each be securely closed with a salt glazed, vitrified tile disc, and sealed in the manner above specified for joints between pipes. Said sewer or sewers as the case may be shall be laid as follows, to -wit: (1) In and along the center line of said alley from and connecting with the sever now in place along the center line of Main Street to a point* four hundred nine (409) feet south of the south line of Main Street. The internal diameter of this sewer shall be nine (9 ) inches. At its connection with the ,ewer in Main Street, the elevation of the inside bottom of this sewer shall be eight and eight -tenths (8.8) feet above said datum plane and the grade thereof shall rise thence at a uniform rate to an elevation of eleven (11) feet above said datum plane at its terminus. 124 Ordinance and Contract Form Alley Pavement. CATCH BASINS For the ur o e of receivingstorm waters from the surface of the pavement herein provided to be con- structed tWO C2� catch basins shall be constructed at the necessary points along the center line of said pavement. Said Catch basins sholl be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catch basins, when in place, to the upper surface of the proposed pavement. Said catch basins shall be cylindrical in shape . having an internal diameter of thirty-six (36) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by means of three (3) header courses of -brick, laid endwise and horizontally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catch basins. Said catch -basins shall have walls eight (8) inches thick built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch - basins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 112) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch -basins shall each rest on a solid bottom of two (2) inch pine planks, laid closely in single thickness and securely spiked to two .(2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure.fift3--four (54) inches in diameter and shall have its upper side placed four(4) feet below the upper surface of the brick wall for said catch -basin. Said catch -basins shall be connected with the sewer, or sewers as the case may be, now existing, or herein provided to be constructed, as the case may be, in and along the center line of the said pavement, along which center line and over said sewer or sewers, the respective catch -basins are to be constructed. Said catch -basins shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed tile pipe having an internal diameter of six (6) inches and of the type known as "Bell and Spigot," the metal of which pipes shall be three -fourths (314) of an inch in thickness and shall be not less than two (2) feet in length. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipe shall be se- curely sealed with a mortar of the quality herein required for brick walls in catch -basins. Each catch -basin connection shall start in a six-inch "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the said sewer at a point not less than eight (8) feet in advance of the center of the catch -basin measured along and in the down stream direction of the sewer. The pipe shall be laid true to line and grade and the connection shall enter the catch -basin through the brick wall thereof at a point two and one-half (2 112) feet above the top of the plank bottom of said catch -basin. The pipe entering the catch -basin through the brick wall thereof, shall be an elbow with the bell end turned downward inside the catch -basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be back -filled as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the alley. The trenches shall be promptly back -filled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch -basins shall each be equipped and fitted with a circular cast iron grate cover weighing not less than three hundred and sixty (360) pounds. Said grate to be so constructed as to freely admit water from the surface of the pavement to the catch -basin) and having a vertical height of nine (9) inches, the opening in said cover shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) inches at the top thereof. The diameter of the lid or grate for said covers shall be 22 314 inches. Said catch -basin covers herein provided to be furnished and set shall rest on the walls of the catch -basins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catch -basins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the upper surface of -the pavement at points where said catch -basins are located. Said catch -basins herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: One at a point one hundred sixty-three (163) feet south of the south line of Main Street. One at four hundred nine (409) feet south of the south line of Main Street. t 1-2 5 Paving Ordinance and Contract. Alley or Street. MANHOLES Ca/ brick manholes shall be built of hard burned sewer brick, upon the sewer or sewers, as the case may be, hereinbefore provided to be constructed and shall be located at the points hereinafter specified. 'Said manholes shall be placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbefore specified in such manner as to bring the tops of the iron covers herein required for said manholes when in place to the upper surface of the proposed pavement. Said manholes shall be cylindrical in shape having an internal diameter of thirty- six (36) inches at the upper surface of the base and upward to the lowest header course being uniformly drawn in to twenty-four (24) inches in diameter at the top of the masonry by means of six (6) header courses of brick laid end- wise and horizontally, the diameter being decreased uniformly by each course to fit the iron covers hereinafter specified to be furnished and set on the walls of said manholes. The walls of said manholes shall rest upon the base thereof without offsetting and shall be eight (8) inches thick, built (except as above specified for header courses) of alter- nate vertical and horizontal courses of brick. The brick used in the construction of said manholes shall be thoroughly wetted with water before being placed and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1;/2) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manholes shall begin at a point five (5) inches below the outside bottom of the sewer hereinbefore specified and shall extend upward to said outside bottom and along the sides of said sewer to a point midway between the top and bottom of said sewer, said base to be circular in form, the diameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manholes shall be neatly removed leaving the lower half thereof to form the invert of the manhole. Said manholes shall each be equipped with a circular castiron cover having a tight lid, weighing not less than five hundred and forty (540) pounds, of the type known as "Chicago City Standard Heavy" having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two (22) and three - fourths (/) inches at the top thereof. Said manhole covers herein specified to be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the tops of the walls of said manholes, which walls shall be built to such height as will bring the tops of the covers when set in place, to the surface of the pavement hereinbefore specified. Said manholes herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: One at the center line of Main Street. One at a point one hundred eighty-nine (189) feet south of the south line of Hain Street. I' 126 ADJUSTMENT OF PRESEM IGE CADAM PAVING . The present macadam paving there the swine adjoins the pro- posed imptovernent shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and quality composing said macadam paving and having been thoroughly compacted it shall form a Iwase or founda- tion for a bituminous macadam pavement to be placed thereon. The upper surface of said base or foundation when completed shall be two (2) inches below the finished grace of the proposed im- provement Where same adjoins said macadam paving. Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard broken limestone ranging in size from a maximum dimension of two inches to a mini- mum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of two (2) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling; shall end as soon as the -stone is set and ceases to creep under action of the roller. As soon a: the initial rolling of the limestone is finished, and. the layer thereof is dry, there shal). be applied to the lime - store (at a temperature not less than 250 nor more than 275 degrees Fahrenheito an asphaltic cement in such quantities as to insure not less than one (1) gallon thereof being evenly spread on and used in each and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to ixfnich the same shall have been applied shall be uniformly covered with dry and herd limestone screenings, free from clay, loam, dust, veget- able or other deleterious substances, and broken to a sixe ranging from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in dia.rreter. The limestone screenings shall be used in suf- ficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the soread- ing of these limestone screenings the paving so covered, shall be given a thorough rolling with a roller of the weight and type here- inbefore named. This rolling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to Which same is applied. The surface of the pavir_g shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be applied to the surface a second application of asphaltic cement of the same kind and quality as that used in the first application. This second. application shall be sufficient in quantity and so a plied and spread, as to insure not _less than three-quarters (3/4) gallon thereof being evenly spread and used on each and every square yard of paving. Immediately after the second application of asphaltic cement is made and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, clean, dry, hard, granite chips; of a size ranging from a maximum dimension of three-fcurths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundredth and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of paving. A final rolling of the paving shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the vreight and type hereinbefore named. The final rolling shall continue until the surface of the pavement is thorough- ly compacted, and brought to a surface, free from depressions and true to form and grade. - ti .v 'fi•er 12 _ Any and all depressions developing during progress of the rolling, required in process of constructing the pavement shall be filled, as the rolling continues, with ` the same respective kind Bf stone as that on which the roller is operating. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that tepre-- sentative samples collected from shipments thereof shall be capable of meeting the following requirements and of passing the following tests, to -wit: (1) The asphaltic cement shall consist of not less than sixty-five per cent refired, solid natural asphalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. it shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so prepared for use as to best adapt it to the climatic and traffic conditions of the roadway on which it is to be used. (2) Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3) It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 grams for one minute. (4) It shall be practically free from water, decom- position products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, end the various hydrocarbons composing it shall be present in ho- mogeneous solution, no granular constituent being present. (6) It must not flash below 350 degrees Fahrenheit vrhen tested in a New York State closed oil burner. (6) 50 grams of the cement upon being maintained at a uni fcrm temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in dieter, shall not lose more than 2 per cent in i,-aeight, and the penetration of the residue shall be not less than one-half t)xat tested as above described. (7) It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95 0. (8) Of the bitumen of -the asphaltic cement which is soluble in carbon disulphide at least 98J-o shall be soluble in cold carbon tetrachloride. (9) The bitumen of the cement shall be soluble in petroleum naptha, at the air temperature to the extent of not less than 72 per cent. (10) Upon ignition, the bitumen of the ce_nient shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more. than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit: Fineness. The cement shall be so ground that 92 % will pass through a standard sieve, having 10,000 meshes and 75% will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist'air....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the .period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The tile ,pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said spipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal. of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. fZ 0198 - 129 All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of i dollars ($ ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of dollars ($ ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annuin according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 19th day of Sept. A.D. 1922. Approved: Sept. 20th, 1922 :John F. Hahn, H.P. Pearsons, City Clerk. Mayor. r 130 RECOME-NDATI ON, ESTIMATE AND ORDINANCE. REC GAVENDAT I ON BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: We herewith submit.an ordinance providing that the Public Alley, extending from the north line of Hamilton Street to the south line of Dempster Street, in Block seventy-six (76), Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland cement concrete pavement, using a bitLminous filler strip for expansion joints in pavement, constructing necessary surface drainage sewer, catch basins, catch basin connections to surface drainage sewer and manholes, adjusting macadam paving adjoining and connecting with the proposed improvement; together with an estimate of the cost of said improvement and recommend the lbassage of said ordinance and the making of the improvement contemplated therein. Respectfully submitted, H.P. Pearsons, Wm. Blanchard, Hal W . Sm i th . Board of Local Improvements of the City pf Evanston, Illinois Dated, Evanston, Illinois. September 19, 1922. ESTIMATE OF ENGINEER OF BOARD OF LOCAL IBQPROVEIV +NTS . To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that the Public Alley, extending from the north line of Hamilton Street to the south line of Dempster Street, in Block seventy-six (76), Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Porttand cement concrete pave- ment, using a bite-mincus filler strip for expansion points in pavement, constructing necessary surface drainage sewer, catch basins, catch basin connections to surface drainage sewer and manholes, adjusting macadam paving adjoining and connecting with the proposed improvement; and presented to the City Council of the City of Evanston a recommendation that such improvement be made, I hereby submit an estimate of the cost of such improvement including labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making :.md collecting the assessment, as provided by law, viz: ESTM�TE OF COST 383 cu. yds. of grading ® $1.60 per cu. yd. . $ 1500 sq. yds. of Portland cement concrete paving complete in place @ $2.75 per sq. yd. 450 lin. ft. of bituminous filler strip for expansion joints in paving, laid complete in place Q 10/ per lin. ft. 580 lin. ft. of surface drainage sevier, average depth of cut seven and one half (7-) feet including trenching and back filling, laid complete in place @ $2.35 per lin. ft. 2 brick catch basins including cast iron covers plank bottoms, excavation and back filling, complete in place ® $75.00 each . . 20 lin. ft. of catch basin connections to surface drainage serer, average depth of cut five (5) feet including trenching and back filling, laid complete in place @ $1.00 per lin. ft. 2 brick manholes including cast iron covers, exca- vation and back filling, complete in place ® $75.00 each 612.80 4,125.00 45.00 1,363.00 150.00 20.00 150.00 �91 131 For lawful expenses attending the proceedings for malting said improvement and the cost of making and collectin the assessment therefor, not to exceed six per centum (6%� of the above, to -wit: $6, 573.80 . . . $ 394.42 6,968.22 Total 0 0 0 . And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improve- ment and the lawful expenses attending the same. En. Blanchard, Engineer of the Board of Local Improve- ments of the City of -iEvenston, Illinois. Dated, Evanston, Illinois. September 19, 1922.. AN ORDINANCE Providing that the Public Alley, extending from the north line of Hamilton Street to the south line of Dempster Street, in Block seventy-six (76), Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland cement concrete pavement, using a bitu- minous filler strip for expansion joints in pavement, constructing necessary surface drainage sewer, catch basins, coach basin con- nections to surface drainage sewer and manholes, adjusting macadam paving adjoining and connecting with the proposed im- ps oven^ ent . BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVAI\TSTON:. SECTION 1. That a local improvement shall be made within the City of Evanston, County ofCook, State of Illinois, the nature,. character, locality and description of which local im- provement is as follows: to -wit: That the Public Alley, extending from the north line of Hamilton Street to the south line of Dempster Street, in Block seventy-six (76), Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be and the sane is hereby ordered improved as follows: Location of Pavement. The center line of the pavement herein provided to be con- structed shall coincide with the center line of the alle-Ir within which said pavement is included. Width of Pavement The width of the pavement herein provided to be constructed shall be nineteen (19) feet. Grade of Pavement The .grade of the upper surface of the finished pavement herein provided to be constructed is hereby established as follows, measured in feet and decimal parts of a foot above the datum plane of the City of Evanston, to -wit: Transverse Section of Alley Outer Edge Center line of Pavement of Pavement At the north line of Hamilton St. 24.00 23.75 At thirty-twd (32) feet north of the north line of Hamilton Street. 24.20 23.95 At five hundred twenty-six (526) feet south of the south line of Dempster St. 23.50 23.25 At four hundred thirty-one (431) feet south of the south line of Demp�, ter St. 24.00 23.75 At three hundred seventeen (317) feet south of the south line of Dem1mter St. 23.4.0 23.15 At one hundred sixty-five (165) feet south of the south line of Deng; ter St. 24.20 23.95 1.32 At the south line of Dempster Street 23.35 23.10 ALLEY PAVING The grade of the center line and outer edges of the pavement at intermediate points shall be respec- tively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane of the low water mark of Lake Michigan in the year A. D. 1847, as established by the Trustees of Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the northwest corner of Davis street and Sherman Avenue, in said City of Evanston. The upper surface of the pavement herein provided to be constructed, when completed, shall conform to the arc of a circle passing through the respective grade points in the center line and at the outer edges of ine pavement, and shall be true and symmetrical. GRADING The alley herein provided to be improved shall be cleaned prior to the paving thereof, in a thorough manner of all deteriorated planking, blocking or other debris. The soil of the roadway shall then be ex- cavated or filled upon with other suitable soil, as the case may be, to such depth 4nd shape as will bring the upper surface of the finished pavement, when constructed as hereinafter specified, to the elevations and grades hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable self- propelling roller or flooding with water as the case may require. Depressions or holes appearing as the pre- paration of the sub -grade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left in the sub -grade, shall be removed by the contractor without extra charge. CONCRETE PAVE\TENT—ALLEY Upon the subgrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement, composed of Portland cement, sand and gravel mixed by volume in ratios of one part of cement, two parts sand, and three parts of gravel with sufficient clean water to give proper plasticity and in the manner here- inafter set forth. The concrete shall be spread on the sub -grade in such quantity and to such form that af- ter being compacted in place it shall have a uniform thickness of six inches. The Portland cement to be used in snaking this concrete pavement shall be of such quality that repre- sentative samples collected from shipments made for the job shall be capable of passing the following tests for fineness, soundness, initial setting, and tensile strength, to -wit: Fineness. The cement shall be ground so that 92 % will pass through a standard sieve, having 10,000 meshes and 757o will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no check- ing, warping or swelling. Broken briquette of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified for the neat pat. Setting. The cement when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. The sand to be used for making the concrete shall be free from dust, clay, loam, vegetable or other deleterious matter. The grains of sand shall be angular and shall range in size from one -quarter inch down to the finest; but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind - drifted sand shall not be used. The sand shall be of such quality that the mortar composed of one part of the cement hereinbefore specified and three parts of sand, by weight, when made into briquettes, will de- velop a tensile strength at least equal to the strength of a mortar of the same consistency and proportion made with the same cement and Standard Ottawa sand. In no case shall the sand, when used for this concrete, contain frost or lumps of frozen matter. 1�3 The gravel to be used in making this concrete shall be clean, hard, free from dust, loam, vegetable or other ' deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable sizes grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (1-4) inch. In no case shalt the gravel when used for this concrete contain frost or lumps of frozen matter. The sand and gravel shall be clean when delivered on the job, and shall be kept clean until used. The method used for treasuring the ingredients in the concrete shall be one that will insure a uniform proportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be considered one cubic foot. The concrete shall be mixed in a batch machine mixer of a type that will insure a uniform distribution of the ingredients throughout the mass. Ingredients of the concrete or mortar shall be mixed to the de- sired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in color, and homogeneous. Clean water, free from oil, acid, alkali or vegetable matter shall be ad- mitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to ,the surface under light tamping, but which can be handled without causing a separation of the gravel from the mortar. The concrete shall be handled rapidly from the mixer to its place in the pavement. Successive batches shall be deposited in place on the sub -grade in a continuous operation so that sections of the pavement be- tween expansion joints, hereinafter specified, shall be entirely completed and without the use of inter- mediate cross forms or bulls -heads. Concrete shall not be retempered or used that has partially hardened. The concrete shall be compacted and brought to the established grade and shaped with a template or straight edge, and shall be brought to a comparatively even surface. After the concrete has been so brought to grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even sur- face. Said roller shall not be less than five feet in length, and not less than eight (8) inches not more than twelve (12) inches in diameter and weighing not less than one hundred pounds (100 lbs.). The roller shall be operated across the pavement from side to side of same, by means of ropes attached to each side of the roller, at such .angle with the center line of the pavement as to permit the roller to advance along the pavement two feet for each time across. After the roller has covered a given area in the manner de- scribed, the same area shall be similarly rolled by the roller for not less than three (3) times at intervals of fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may be necessary to remove excess water. After the rolling has been completed the pavement shall be finished by two (2) applications of a belt made.of canvas, not less than six (6) inches wide and not less than two (2) feet longer than the width of the pavement. For the first application, vigorous strokes at least twelve (12) inches long shall be used. The longi- tudinal movement of the belt along the pavement shall be very slight. The second application of the belt shall be immediately after the water glaze or sheen disappears, and the stroke of the belt shall be not more than four (4) inches, and the longitudinal movement shall be a continuous forward movement. A suitable bridge to span the width of the pavement shall be used to finish the joints, no part of which shall be in contact with the finished work. A notched straight edge ten (10) feet in length shall be used for testing each transverse joint, prior to and subsequent to final finishing. The straight edge shall be placed over the joint, parallel to the center line of the pavement and moved across from curb to curb. When the surface of the concrete upon testing shows to be high or low, concrete will be added or removed to bring the surface its true shape. The concrete adjoining transverse joints shall be dense in character and after rolling shall be finished with a wood float, which is divided through the center and which will permit finishing on both sides of the filler at the same time. The finished surface of the concrete shall not vary more than one -eighth (1-8) of an inch from a two foot straight edge placed upon the concrete in any position. Workmen shall not walk on the freshly laid concrete; and no one shall be allowed on the concrete after it has been worked into form and position with a template or straight edge, until it has thoroughly hardened. EXPANSION JOINTS Transverse expansion joints not less than three -eighths (3I8) inch or more than one-half (1I2) inch in width shall be placed across the pavement at right angle to the center line of the roadway; spaced so as not to exceed thirty-three and one-third (33 113) feet apart. All expansion joints shall extend through the entire thickness of the pavement. In these expansion joints there shall be placed a prepared strip of bi- tuminous filler of the thickness hereinbefore specified for expansion joints and extending from the bottom of the pavement herein specified to the upper surface of the finished pavement. The upper edges of all joints and the upper outer edges of the pavement shall be neatly troweled to a radius of one -quarter (/) inch. All metal, manholes, catch basin covers, and other fixed objects shall be separated from the concrete 'pavement by a joint filler of the same character as hereinbefore specified for expansion joints; which joint filler shall extend through the entire thickness of the pavement. -• PROTECTION_ ---- -----`'" . ,— -- - T - soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be spray- edith water ; and it shall be kept thoroughly wet for at least ten days. As soon as it can be done without cl`amage to. -the concrete, the surface thereof, during hot and dry weather and if unshaded shall be covered ith"no wt less than one inch of earth, sawdust, straw or other suitable and available material, which cover - in' -,shall be kept vet for at least four days after being placed. In dry and hot weather freshly laid con- crete shall be protected by a canvas covering until it can be sprinkled or covered, as specified. The water and concrete aggregates shall be heated if at any time during the progress of the work the temperature is, or from weather reports will likely during the next twenty-four hours drop to (35) thirty- five degrees Fahrenheit. The concrete shall be protected against freezing for at least ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established line, and their upper edges shall conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have previously been used. The pavement shall be thoroughly cleaned and open to the public as soon as the cement has set suffici- ently to receive the traffic without injury to the surface or body of the concrete. SURFACE DRAINAGE SEWER16- For the purpose of carrying off storm waters from the surface of the pavement herein provided to be constructed, 0. surface drainage sewer& of vitrified, salt glazed, tile pipe shall be laid as hereinafter specified. Said sewer* shall be laid in open trenches in the ground in such manner as to conform to the elevations, lines and grades hereinafter specified. The pipe used in the construction of said sewer@ shall be of the type known as "Bell and Spigot" having an internal diameter of nine (9) inches, the metal of which pipe shall have a thickness of thirteen -sixteenths (13/16) of an inch and shall be not less than two (2) feet in length, cylindrical, straight, smooth, thoroughly vitrified, salt glazed, free from cracks or blisters and of the best quality and workmanship. The joints between the pipes shall be securely sealed with a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 /2) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The joints between said pipes shall be wiped and pointed inside the pipes. The interior of the pipes shall be kept free from dirt or refuse of every description and shall be left clean at the completion of the work. The open trenches excavated to receive said sewers, shall be made at least twelve (12) inches wider than the ex- terior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing joints. The materials excavated shall be kept compactly along the sides of the trench and shall be backfilled as soon as practic- able in order to occasion the least possible inconvenience to the public in use of the street or alley as the case may be. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. The open and unconnected ends of said sewers shall each be securely closed with a salt glazed, vitrified tile disc, and sealed in the manner above specified for joints between pipes. Said sewer or sewers as the case may be shall be laid as follows, to -wit: In and along the center line of said alley from and connecting with the sewer now in Mace along the center line of Dempster Street to a. point five hundred twenty-six (526) feet south of the south line of Demim ter Street. The internal diameter of this sewer shall be nine (9) inches. At its connection with said sewer in Dempster Street the elevation of tje inside bottom of this sewer shall be eleven and eigh-tenths (11.8) feet above the datum plane hereinbefore defined and the grade thereof shall rise thence at a uniform rate to an elevation of nineteen and one-half (19J-) feet above sFiid datum plane at its terminus. Ordinance and Contract .Form Alley Pavement. CATCH BASINS For the purpose of receiving storm waters from the surface of the pavement herein provided to be con- structed two t2 ) catch basins shall be constructed at the necessary points along the center line of said pavement. Said Catch basins sholl be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catch basins, when in place, to the upper surface of the proposed pavement. Said catch basins shall be cylindrical in shape having an internal diameter of thirty-six (36) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by means of three (3) header courses of brick, laid endwise and horizontally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catch basins. Said catch -basins shall have walls eight (8) inches thick built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch - basins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 112) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch -basins shall each rest on a solid bottom of two (2) inch pine planks, laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure.fifty-four (54) inches in diameter and shill have its upper side placed four(4) feet below the upper surface of the brick wall for said catch -basin. Said catch -basins shall be connected with the sewer, or sewers as the case may be, now existing, or herein provided to be constructed, as the case may be, in and along the center line of the said pavement, along which center line and over said sewer or sewers, the respective catch -basins are to be constructed. Said catch -basins shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed tile pipe having an internal diameter of six (6) inches and of the type known as "Bell and Spigot," the metal of which pipes shall be three -fourths (314) of an inch in thickness and shall be not less than two (2) feet in length. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipe shall be se- curely sealed with a mortar of the quality herein required for brick walls in catch -basins. Each catch -basin connection shall start in a six-inch "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the said sewer at a point not less than eight (8) feet in advance of the center of the catch -basin measured along and in the down stream direction of the sewer. The pipe shall be laid true to line and grade and the connection shall enter the catch -basin through the brick wall thereof at a point two and one-half (2 112) feet above the top of the plank bottom of said catch -basin. The pipe entering the catch -basin through the brick wall thereof, shall be an elbow with the bell end turned downward inside the catch -basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be back -filled as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the alley. The trenches shall be promptly back -filled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch -basins shall each be equipped and fitted with a circular cast iron grate cover weighing not less than three hundred and sixty (360) pounds. Said grate to be so constructed as to freely admit water from the surface of the pavement to the catch -basin) and having a vertical height of nine (9) inches, the opening in said cover shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) inches at the top thereof. The diameter of the lid or grate for said covers shall be 22 314 inches. Said catch -basin covers herein provided to be furnished and set shall rest on the walls of the catch -basins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catch -basins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the upper surface of the pavement at points where said catch -basins are located. Said catch -basins herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: One at a point one hundred and four (104) feet north of thenorth line of Hamilton Street. One at a point three hundred thirteen (313) feet north of the north line of Hamilton Street. a_ 36 Paving Ordinance and Contract. Alley or Street. MANHOLES Two (2) brick manholes shall be built of hard burned sewer brick, upon the sewer or sewers, as the case may be, hereinbefore provided to be constructed and shall be located at the points hereinafter specified. Said manholes shall be placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbefore specified in such manner as to bring the tops of the iron covers herein required for said manholes when in place to the upper surface of the proposed pavement. Said manholes shall be cylindrical in shape having an internal diameter of thirty- six (36) inches at the upper surface of the base and upward to the lowest header course being uniformly drawn in to twenty-four (24) inches in diameter at the top of the masonry by means of six (6) header courses of brick laid end- wise and horizontally, the diameter being decreased uniformly by each course to fit the iron covers hereinafter specified to be furnished and set on the walls of said manholes. The walls of said manholes shall rest upon the base thereof without offsetting and shall be eight (8) inches thick, built (except as above specified for header courses) of alter- nate vertical and horizontal courses of brick. The brick used in the construction of said manholes shall be thoroughly wetted with water before being placed and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manholes shall begin at a point five (5) inches below the outside bottom of the sewer hereinbefore specified and shall extend upward to said outside bottom and along the sides of said sewer to a point midway between the top and bottom of said sewer, said base to be circular in form, the diameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manholes shall be neatly removed leaving the lower half thereof to form the invert of the manhole. Said manholes shall each be equipped with a circular castiron cover having a tight lid, weighing not less than five hundred and forty (540) pounds, of the type known as "Chicago City Standard Heavy" having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two (22) and three - fourths (/) inches at the top thereof. Said manhole covers herein specified to be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the tops of the walls of said manholes, which walls shall be built to such height as will bring the tops of the covers when set in place, to the surface of the pavement hereinbefore specified. Said manholes herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: One at a point three hundred eighty-eight (388) feet north of the north line of Hamilton Street. One at the center line of Dempster Street. - ice' i 9 i 9 8 ADJUSTMENT OF PRESENT MACAMAY1 PAVING. 13'7 The present macadam paving where the same adjoins the pro- posed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and quality composing said macadam paving -and having been thoroughly compacted it shall form a base or founda- tion for a bituminous macadam pavement to be placed thereon. The upper surface of said base or foundation when completed shall be two (2) inches below the finished grade of the proposed improve- ment where same adjoins said macadam paving. Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard broken limestone ranging in size from a maximum. dimension of two inches to a minimum dimension of three -fourths inch. This layerof limestone shall be evenly spread, and in sufficient quantity to insure a thickness of two (2) inches thereof being spread on and used in each and every square yard of. the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons-. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be applied to the lime- stone (at a temperature not less than 250 nor :r.ore than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one 11) gallon thereof being evenly spread on and used in each and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size ranging from the largest particle that vic:uld pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass thrcug?i a sieve having circular holes one-fourth inch in diameter. The limestone screenings shall be used in .sufficient quantity to snugly fill the inter- stices in the course of stone to vLich same is applied. Imme- diately follo-ring the spreading of these limestone screenings the paving so covered, shall be given a thorough rolling with a roller of the weight and type hereinbefore named. This rolling shall continue until the screenings are driven into, and thorough- ly bonded with, the layer of stone to which same is app-lied. The surface of the paving shall next be thoroughly cleaned of all loose .stone, dirt, leaves or other foreign material thereon. After being so clenaed there shall be applied to the tiurfa,ce a second application of asphaltic cement of the same kind and quality as that used in the first application. This :second ap- plication shall be sufficient in quantity and so applied and spread, as to insure not less than three-quarters (3/4) gallon thereof being evenly spread and used on each and every square yard of paving. Immediately after the second application of asphaltic cement is made and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one - eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of paving. 138 A final rolling of the paving shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the pavement is thoroughly compacted, and brought to a surface free from depressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing -the pavement shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The asphaltic cement used in the improvament herein pro- vided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following requirements and of passing the follmring tests, to -wit: (1) The asphaltic cement shall consist of got less than sixty -fiver percent refined, solid natural asphalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical pro perties and be so prepared for use as to best adapt it to the climatic and traffic conditions of the roadway on which it is to used. (2) Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3) It must have a Aene trati on between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 grams for one minute. (4) It shall be practically free from water, decomposition products, coke or inert carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons com- posing it shall be present in homogeneous solution, no granular constituent being )resent. (5) I must not flash below 350 degrees Fahrenheit when tested in a kew York state closed oil tester. (6) _ 50 grams of the cement upon being maintained at a uniform temperature of 32o degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2. per cent in weight, and the penetration of the residue shall not be -less than one-half that tested as above described. (7) It shall be soluble in chemically pure carbon disul- phide at air temperature to the extent of at least 95f. (8) Of ' the vitumen of the asphaltic cement Which is soluble in carbon disulphide at least 98f% shall be soluble in cold carbon tetrachloride. (9) The bitumen of the cement shall be soluble in petrol- eum naptha, at the air temperature to the extent of not less than 72 per cent. (10) Upon ignition, the bitumne of the cement shall yield not. less than 9 per cent nor more than 15 per cent of fixed carbon o.- residue coke. MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. j SAND I All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength pf a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit: Fineness. The cement shall be so ground that 927o will pass through a standard sieve, having 10,000 meshes and 757o will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight ,per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ..............................:.. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the ,period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The the pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said spipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. 110 t 779 All the material used in the construction of the impnovement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of three hundred ninety-four and forty+ -two hundredths dollars ($394.42 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of three hundred ninety-four and forty-two hundredths dollars ($ 394.42 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed. against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into f ive installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 19th day of Sept. A.D. 1922. Approved: Sept. 20th, 1922. John F. Kahn, H.P. Pearsons, City Clerk. Mayor. �1 i9198. j 1.41 RECOMNETTDAT ION, ESTIMATE AND ORDIIIANCE RECOMMENDATION BY BOARD OF LOCAL ITAPROV=.LTTS. To the Mayor and Aldermen of the City of Evanston in the City Council As`s embl ed :: We herewith submit an ordinance providinS that the Public Alleys in Block seventeen (17) Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Porltnad Cement Concrete pave- ment, using a bituminous filler strip 'for expansion joints in pavement, constructing necessary surface drainage sewer, marf- hole, catch basin and catch basin connection to surface drainage sewer also adjusting brick and mavadamm paving adjoining and connecting with the proposed improvement; together with an estimate of the cost of* said improvement and recommend the passage of said ordinance and the making of the improvement contemplated therein. Respectfully submitted, H.P. Pearsons, Wm. Blanchard, Hal W. Smith. Board of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, Illinois. September 19, 1922. ESTIa4ATE OF ENGIATEER OF BOARD OF LOCAL EF-PROVE110TS . To the Mayor fund Aldermen of the City of Evanston in the City =Council Assembled: The Board of Local Iraprovi-nnents of the City of Evanston having ado ted a resolution that the Public Alleys in Block seventeen (17� Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Porltand Cement Concrete pavementm using a bituminous filler strip for expansion joints in pavement, con- structing necessary surface drainage sewer, manhole, catch basin and catch basin connec-Lion to surface drainage dewer also adjusting brick and macadam paving adjoining and connecting with the proposed improvement; and presented to the City Council of the City of Evanston a recommendation that such improvement be inade, I hereby submit an estimate of the cost of such improve- ment including labor, material and lawful expenses attendir�; -the proceedin-s for making said improvement and the cost of making and collecting the assessment, as provided by lair, viz: ESTIIZ'kTE OF COST 310 Cu. yds. of grading Q $1.60 per cu. yd. . 1500 Sq. yds. of Porltand Cement concrete paving complete in place ® $2.75 per sq. yd. 460 Lin. ft. of bituminous filler strip for expansion joints in paving, laid complete in place ® 10,d per lino ft. . 200 Lin. ft. of surface drainage sewers, average depth of cut six (6) feet including trenching and irack- filling laid complete in place @ $2.35 per lin ft. 1 brick catch basin including cast iron cover, plank bottom, excavation and back filling, complete in place 10 lin. ft. of catch basin connections to surface drainage sewer, average depth of cut five (5 ) feet, including trenching and back filling, laid complete in place ® $1.00 per lin. oft. 0 . 1 brick manhole including cast iron cover, excavation and back filling comple to in place 45 sq. yds. of macadam paving adjusted to grade @ 151.20 pdr sq. yd. 496.00 4,125.00 46.00 470.00 75.00 ; 10.00 75.00 54.00 142 140 sq. yds. of brick paving adjusted to grade ® $1.20 per sq. yd. t 168.00 For lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment therefor, not .to exceed six per centum (6%) of the above, to-wi:t:, '.' $5,519.00 0 331.14 Total 5,850.14 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improve- ment and the lawful expenses attending the same. Wm. Blanchard Engineer of the Board of Local Im- provements of the City of Evanston. Dated, Evanston, Illinois, September 19, 1922. 'AN ORDINANCE Providing that the Public Alleys in Block seventeen (17) Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving; with a Portland cement concrete pavement, using a bi tiaminous' filler strip for expansion joints in pavement, constructing necessary surface drainage sewer manhole, catch basin and catch basin connection to surface drainage sewer also adjusting brick and macadam oaving adjoining and con- necting with the proposed improvement. BE IT (RDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvement shall be made within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local improvement is as follows, to -wit: That the Public Alleys in Block seventeen (17) Village of Evanston, in the City of Evanston, County of Cook, State of Illinois be` and the same are hereby ordered improved as follows: Location of Pavement The center line of the pavement herein provided to be con- structed shall coincide with the center line of the alley Within which said pavement is included. Width of Pav err. en t The width of the pavement herein provided to be constructed shall be nineteen (19) feet. Grade of Pavement The grade of the upper surface of the finished pavement herein provided to be constructed is hereby established as follows; Measured in feet•'and decimal'parts'of a foof above'the datum plane of the City of Evanston, to -wit: Outer Edges Center line Transverse Section of Alley. of Pavement of Pavement Alley extending east and west in said Block 17. At the- east- line -of 'Berisori Ave.' 19.05 18.80 At ninety-five (95) feet east of the east line of Benson Avenue. 19..95 19.70 At one -hundred fifty -;five (155) -feet west of Sherman Avenue. 19.50 19.25 At the west line of Sherman Ave. 17 .15 ' 16.95 1!1.0198 143 Alley extending north and south in said Bloch 17. At a point three hundred feet south of Clark Street. 19.50 19.25 At a point two hundred fifty (250) feet south of Clark Street. 19.80 19.55 At the south line of Clark Street. 17.30 17.05 ALLEY PAVING The grade of the center line and outer edges of the pavement at intermediate points shall be respec- tively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane of the low water mark of Lake Michigan in the year A. D. 1847, as established by the Trustees of Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the northwest corner of Davis street and Sherman Avenue, in said City of Evanston. The upper surface of the pavement herein provided to be constructed, when completed, shall conform to the arc of a circle passing through the respective grade points in the center line and at the outer edges of the pavement, and shall be true and symmetrical. GRADING The alley herein provided to be improved shall be cleaned prior to the paving thereof, in a thorough manner of all deteriorated planking, blocking or other debris. The soil of the roadway shall then be ex- cavated or filled upon with other suitable soil, as the case may be, to such depth and shape as will bring the upper surface of the finished pavement, when constructed as hereinafter specified, to the elevations and grades hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable self- propelling roller or flooding with water as the case may require. Depressions or holes appearing as the pre- paration of the sub -grade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left in the sub -grade, shall be removed by the contractor without extra charge. CONCRETE PAVEMENT —ALLEY Upon the subgrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement, composed of Portland cement, sand and gravel mixed by volume in ratios of one part 'of cement, two parts sand, and three parts of gravel with sufficient clean water to give proper plasticity and in the manner here- inafter set forth. The concrete shall be spread on the sub -grade in such quantity and to such form that af- ter being compacted in place it shall have a uniform thickness of six inches. The Portland cement to be used in making this concrete pavement shall be of such quality that repre- sentative samples collected from shipments made for the job shall be capable of passing the following tests for fineness, soundness, initial setting, and tensile strength, to -wit: Fineness. The cement shall be ground so that 92 % will pass through a standard sieve, having 10,000 meshes and 75ojo will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at 'the circumference, made on glass, shall remain .in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no check- ing, warping or swelling. Broken briquette of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified for the neat pat. Setting. The cement when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (I day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water). ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (I day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period Wecified. The sand to be used for making the concrete shall be free from dust, clay, loam, vegetable or other deleterious matter. AAA The grains of sand shall be angular and shall range in size from one -quarter inch down to the finest; but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind - drifted sand shall not be used. The sand shall be of such quality that the mortar composed of one part of the cement hereinbefore specified and three parts of sand, by weight, when made into briquettes, will de- velop a tensile strength at least equal to the strength of a mortar of the same consistency and proportion made with the same cement and Standard Ottawa sand. In no case shall the sand, when used, for this concrete, contain frost or lumps of frozen matter. The gravel to be used in making this concrete shall be clean, hard, free from dust, loam, vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable sizes grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (1-4) inch. In no case shall the gravel when used for this concrete contain frost or lumps of frozen matter. The sand and gravel shall be clean when delivered on the job, and shall be kept clean until used. The method used for measuring the ingredients in the concrete shall be one that will insure a uniform proportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be considered one cubic foot. The concrete shall be mixed in a batch machine mixer of a type that will insure a uniform distribution of the ingredients throughout the mass. Ingredients of the concrete or mortar shall be mixed to the de- sired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in color, and homogeneous. Clean water, free from oil, acid, alkali or vegetable matter shall be ad- mitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the gravel from the mortar. The concrete shall be handled rapidly from the mixer to its place in the pavement. Successive batches shall be deposited in place on the sub -grade in a continuous operation so that sections of the pavement be- tween expansion joints, hereinafter specified, shall be entirely completed and without the use of inter- mediate cross forms or bulk -heads. Concrete shall not be retempered or used that has partially hardened. The concrete shall be'compacted and brought to the established grade and shaped with a template or straight edge, and shall be brought to a comparatively even surface. After the concrete has been so brought to grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even sur- face. Said roller shall not be less than five feet in length, and not less than eight (S) inches not more than twelve (12) inches in diameter and weighing not less than one hundred pounds (100 lbs.). The roller shall be operated across the pavement from side to side of same, by means of ropes attached to each side of the roller, at such angle with the center line of the pavement as to permit the roller to advance along the pavement two feet for each time across. After the roller has covered a given area in the manner de- scribed, the same area shall be similarly rolled by the roller for not less than three (3) times at intervals of fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may be necessary to remove excess water. After the rolling has been completed the pavement shall be finished by two (2) applications of a belt made of canvas, not less than six (6) inches wide and not less than two (2) feet longer than the width of the pavement. For the first application, vigorous strokes at least twelve (12) inches long shall be used. The longi- tudinal movement of the belt along the pavement shall be very slight. The second application of the belt shall be immediately after the water glaze or sheen disappears, and the stroke of the belt shall be not more than four (4) inches, and the longitudinal movement shall be a continuous forward movement. A suitable bridge to span the width of the pavement shall be used to finish the joints, no part of which shall be in contact with the finished work. . A notched straight edge ten (10) feet in length shall be used for testing each transverse joint, prior to and subsequent to final finishing. The straight edge shall be placed over the joint, -parallel to the center line of the pavement and moved across from curb to curb. When the surface of the concrete upon testing shows to be high or low, concrete will be added or removed to bring the surface its true shape. The concrete adjoining transverse joints shall be dense in character and after rolling shall be finished with a wood float, which is divided through the center and which will permit finishing on both sides of the filler at the same time. The finished surface of the concrete shall not vary more than one -eighth (1-8) of an inch from a two foot straight edge placed upon the concrete in any position. Workmen shall not walk on the freshly laid concrete; and no one shall be allowed on the concrete after it has been worked into form and position with a template or straight edge, until it has thoroughly hardened. EXPANSION JOINTS Transverse expansion joints not less than three -eighths (318) inch or more than one-half (1I2) inch in width shall be placed across the pavement at right angle to the center line of the roadway; spaced so as not to exceed thirty-three and one-third (33 113) feet apart. All expansion joints shall extend through the entire thickness of the pavement. In these expansion joints there shall be placed a prepared strip of bi- tuminous filler of the thickness hereinbefore specified for expansion joints and extending from the bottom of the pavement herein specified to the upper surface of the finished pavement. The upper edges of all joints and the upper outer edges of the pavement shall be neatly troweled to a radius of one -quarter (/) inch. All metal, manholes, catch basin covers, and other fixed objects shall be separated from the concrete %pavement by a joint filler of the same character as hereinbefore specified for expansion joints; which joint filler shall extend through the entire thickness of the pavement. PROTECTION itINOW As soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be spray- ed with water; and it shall be kept thoroughly vet for at least ten days. As soon as it can be done without damage to the concrete, the surface thereof, during hot and dry weather and if unshaded shall be covered with not less than one inch of earth, sawdust, straw or other suitable and available material, which cover- ing shall be kept `vet for at least four days after being placed. In dry and hot weather freshly laid con- crete shall be protected by a canvas covering until it can be sprinkled or covered, as specified. The water and concrete aggregates shall be heated if at any time during the -progress of the work the temperature is, or from weather reports will likely during the next twenty-four hours drop to (35) thirty- five degrees Fahrenheit. The concrete shall be protected against freezing for at least ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established line, and their upper edges shall conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have previously been used. The pavement shall be thoroughly cleaned and open to the public as soon as the cement has set suffici- ently to receive the traffic without injury to the surf ace or body of the concrete. SURFACE DRAINAGE SEWER For the purpose of carrying off storm waters from the surface of the pavement herein provided to be constructed, surface drainage sewe* of vitrified, salt glazed, tile pipe shall be laid as hereinafter specified. Said sewers shall be laid in open trenches in the ground in such manner as to conform to the elevations, lines and grades hereinafter specified. The pipe used in the construction of said sewere shall be of the type known as "Bell and Spigot" having an internal diameter of nine (9) inches, the metal of which pipe shall have a thickness of thirteen -sixteenths (13/16) of an inch and shall be not less than two (2) feet in length, cylindrical, straight, smooth, thoroughly vitrified, salt glazed, free from cracks or blisters and of the best quality and workmanship. The joints between the pipes shall be securely sealed with a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 T/z ) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The joints between said pipes shall be wiped and pointed inside the pipes. The interior of the pipes shall be kept free from dirt 'or refuse of every description and shall be left clean at the completion of the work. The open trenches excavated to receive said sewer, shall be made at least twelve (12) inches wider than the, ex- terior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing joints. The materials excavated shall be kept compactly along the sides of the trench and shall be backfilled as soon as practic- able in order to occasion the least possible inconvenience to the public in use of the street or alley as the case may be, The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. The open and unconnected ends of said sewer/ shall each be securely closed with a salt glazed, vitrified tile disc, and sealed in the manner above specified for joints between pipes. Said sewer or sewers as the case may be shall be laid as follows, to -wit: In and along said alley, extending east and west in said Block 17, from and connecting with the sewer now in place along a line twenty-six (26) feet west of the -east line of Benson Avenue to a point one hundred sixty- five (165) feet east of said Benson Avenue. The internal diameter of this sewer shall be nine (9) inches. At its connection with the sewer in Benson Avenue -the elevation of the inside bottom of this sewer shall be thirteen (13) feet above the datum plane her.einbefore defined and the grade thereof shall rise thence at a uniform rate to an elevation of fourteen (14) feet above said datum gat it's terminus. 146 CATCH BASINS For the purpos o receiving storm waters from the surface of the pavement herein provided to be con- structed one 1 catch basins shall be constructed at the necessary points along the center line of said pavement. Said Catch basin sholl be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the top$ of the iron cover* -herein required for said catch basirm, when in place, to the upper surface of the proposed pavement. Said catch basing shall be cylindrical in shape having an internal diameter of thirty-six (36) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by means of three (3) header courses of brick, laid endwise and horizontally, to fit the iron covert hereinafter specified to be furnished and set on the walls of said catch basins. Said catch -basing shall have walls eight (8) inches thick built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch - basins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 112) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch -basin* shall each rest on a solid bottom of two (2) inch pine planks, laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure.fifty-four (54) inches in diameter and shall have its upper side placed four(4) feet below the tipper surface of the brick wall for said catch -basin. Said catch=basing shall be connected with the sewer, or sewers as the case may be, now existing, or herein provided to be constructed, as the case may be, in and along the center line of the said pavement, along which center line and over said sewer or sewers, the respective catch-basiiy are to be constructed. Said catch -basing shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed tile pipe having an internal diameter of six (6) inches and of the type known as "Bell and Spigot," the metal of which pipes shall be three -fourths (314) of an inch in thickness and shall be not less than two (2) feet in length. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipe shall be se- curely sealed with a mortar of the quality herein required for brick walls in catch -basins. Each catch -basin connection shall start in a six-inch "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the said sewer at a point not less than eight (8) feet in advance of the center of the catch -basin measured along and in the down stream direction of the sewer. The pipe shall be laid true to line and grade and the connection shall enter the catch -basin through the brick wall thereof at a point two and one-half (2 112) feet above the top of the plank bottom of said catch -basin. The pipe entering the catch -basin through the brick wall thereof, shall be an elbow with the bell end turned downward inside the catch -basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be back -filled as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the alley. The trenches shall be promptly back -filled to a depth of twelve (12)'inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch -basin# shall each be equipped and fitted with a circular cast iron grate cover weighing not less than three hundred and sixty (360) pounds. Said grate to be so constructed as to freely admit water from the surface of the pavement to the catch -basin) and having a vertical height of nine (9) inches, the opening in said cover shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) inches at the top thereof. The diameter of the lid or grate for said covers shall be 22 314 inches. Said catch -basin covert herein provided to be furnished and set shall rest on the walls of the catch -basins herein specified to be constructed. Said covert shall be imbedded in a mortar of the quality herein required for brick walls in said catch -basin. The walls shall be built to such height as will bring the tope of the cover' when set in 'place, to the upper surface of the pavement at points where said catch -basin& are located. Said catch -basin# herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: On the center line of, the alley extending east and west in said Block 17, at a point one hundred sixty-five (165) feet east of the east line of Benson Avenue. T49 1- 8­� MANHOLES One (2b}ick manholeovshall be built of hard burned sewer brick, upon the sewer or sewers, as the case may be, hereinbefore provided to be constructed and shall be located at the point& hereinafter specified. Said manhole&shall be placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbefore specified in such manner as to bring the topf of the iron cover` herein required for said manhole] when in place to the upper surface of the proposed pavement. Said manholes shall be cylindrical in shape having an internal diameter of thirty- six (36) inches at the upper surface of the base and upward to the lowest header course being uniformly drawn in to twenty-four (24) inches in diameter at the top of the masonry by means of six (6) header courses of brick laid end- wise and horizontally, the diameter being decreased uniformly by each course to fit the iron covers hereinafter specified to be furnished and set on the walls of said manhole#. The walls of said manholes shall rest upon the base thereof without offsetting and shall be eight (8) inches thick, built (except as above specified for header courses) of alter- nate vertical and horizontal courses of brick. The brick used in the construction of said manholes, shall be thoroughly wetted with water before being placed and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manholqJ shall begin at a point five (5) inches below the outside bottom of the sewer hereinbefore specified and shall extend upward to said outside bottom and along the sides of said sewer to a point midway between the top and bottom of said sewer, said base to be circular in form, the diameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manholes shall be neatly removed leaving the lower half thereof to form the invert of the manhole. Said manhole* shall each be equipped with a circular castiron cover having a tight lid, weighing not less than five hundred and forty (540) pounds, of the type known as "Chicago City Standard Heavy" having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two (22) and three - fourths ( Y4) inches at the top thereof. Said manhole covers herein specified to be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the tops of the walls of said manholes, which walls shall be built to such height as will bring the tops of the covers; when set in place, to the surface of the pavement hereinbefore specified. Said manholeg herein provided to be constructed, referring to the vertical axis thereof, shall be j located as follows: At a point twenty-six (26) feet west of the east line of Benson Avenue and on the center line, produced west, of the alley extending east and west in said Block seventeen (17) . ADJUST + OF PRESENT MACADAM PAVING The present macadam paving where the wane adjoins the pro- posed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and quality composing said macadam paving and hiving been thoroughly compacted it shall form a base ox founda- tion for a bituminous macadam pavement to be placed thereon. The upper surface of said base or foundation when completed shall be two (2) inches below the finished grade of the proposed improve- ment where same adjoins said macadam paving. Upon the base or foundation, prepared as hereinbefore speci- fied, there shall be spread a layer of clear., hard broken lime- stone ranging in size from a macimum dimension of two inches to a ninimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of two (2) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given :'an initial rolling with a self propelling road roller weighing not less than ten tons. The, initial rolling shall end as soon.as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be applied to the limestone , (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one (1) gallon thereof being evenly spread on and used in each and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. Ir r;,448 . Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have .been applied shall be uniformly covered' with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken toa size ranging from the largest particle that would pass through a sieve having circular holes three -"fourths inch in diameter to the largest particle that would pass through a sievE. having circular holes one-fourth inch in diameter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screenings the paving so covered, shall be given a thorough rolling with a roller of the weight and type hereinbefore named. This rolling shall continue unG-'l the screenings are driven into, and thoroughly bonded with, the layer of stome to which same is applied. The surface of the paving shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material the- eon'. After being so cleaned there shall be applied to the surface a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread, as to insure not less than three-quarters (3/4) gallon thereof being evenly spread and used on each and every square yard of paving. Immediately after the second application of asphaltic cement is nade and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one hundred and forty-fourth of a cubic yard thereof being; evenly spread and used on each and every square yard of paving. A f inal rolling of the paving shall cl os ely f ollow the spreading thereon of these granite chips. The final rolling shall be done lrlith a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the pavement is thoroughly compacted, and brought to a surface free from depressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement shall be.filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The asphaltic cement used in the improvement herein pro- vided to be mode shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following requirements and of passing the following tests, to -grit : (1) The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural asphalt and a flux to be tested r:,ith and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or as manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such c:�_emical and physical properties and be so prepared for use as to best adapt it to the climatic and traffic conditions of the roadway on which it is to be used. (2) Its specific gravity shall be greater than 980 at 77 degrees Fahrenehit. (3) It must have ' a penetration between 5 and 10 milli- meters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 grams for one minute. (4) It shall be practically free from water, decompo- sition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hvdric2rbons composing it shall be present in homogeneous solution, no granular constituent being present. (5) It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6) 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a �1119198 149 cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 percent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7) It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95J. (8) Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98zf shall be soluble in cold carbon tetrachloride. (9) The bitumen of the cement shall be soluble in petro- leum raptha., at the air temperature to the extent of not less than 72 per cent. (10) Upon ignition, the yield not less than 9 per cent fixed carbon or residue coke. bitumen of the cement shall nor more than 15 per cent of ADJUST ' hNT OF PRESENT BRICK PAVING The present brick paving, where the same adjoins the proposed improvement, shall be adjusted to conform to the upper surface of the proposed improvement w'nen completed and in place. Said adjustment shall be made in the same manner and with the same kind of material originally used in constructing said present brick paving. MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be har d burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAN D CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit. Fineness. The cement shall be so ground that 92 °Jo will pass through a standard sieve, having 10,000 meshes and 757o will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight Per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: _—•-�*,��--�".�i-i.LZ"- _.. _ _._.,.,w,_ _ - ...q.,.,�,n�!�.I�r ,mod.:,, Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. i 28 days (1 day in moist air, 27 days in water) ................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 23 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the naives, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The tile ,pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said pipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch All the material used in the construction of the impriovement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of three hundred thirty-one and fourteen hundredths dollars ($ 331.14 )� being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of three hundred thirtypone and fourteeh hundredths dollars ($ 331.14 )� shall be applied toward the cost of malting, let ying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into five installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 19th day of Sept. A.D. 1922. Approved: Sept. 20th, 1922. John F. Hahn, H.P. Pearsons, Mayor. City_'. Clerk. 151 RECOMMENDATION, ESTIMATE AND ORDINANCE. REC CIWENDATI ON BY BOARD OF LOCAL IMPROV TENTS . To the Mayor and Aldermen of the City of Eva ston in the City Council Assembled. We herewith submit an ordinance providing that the Public Alley, extending from thenorth line of Kedzie Street to the south -line of Main Street, "said alley lying east of and adjoining lots 6ne'(10 to tivelve (12) tboth inclusive) in Block "B", in the resubdivision of blocks eight (8) and "B" White's Addition to Evanston, in the southeast one -quarter (i) of Section nineteen (19) Township forty-one (41) North, Range fourteen (14) East of the Third (3rd) Principal Meredian, in the City of Evanston, County'of'Codk,'State of'Illinois,,be improved by grading, paving v;ith a Portland Cement Concrete pavement, using a bituminous filler strip for expansion joints in pave- ment, constructing necessary surface drainage sewer, catch basins, catch b asin connections to surface drainage sewer and manhole, adjusting'macadam paving -adjoining and connecting iii.th the pro- posed improvement; together with an estimate of the cost of said improvement and recommend the passage of said ordinance and the making of the improvement contemplated therein. Respectfully submitted, H.P. Pearsons, Wm. Blanchard, Hal W. Smith, Board of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, Illinois, September 19, 1922. ESTIId,= OF ENGINEER OF BOARD OF LOCAL IMPROVELENTS To the Mayor and Aldermen of the City of Evanston in the City Council Assembled:, The Board of Local Improvements of the City of Evanston having adopted a resolution that the Public Alley, extending from the north line of Kedzie Street to the south line of Alain Street, said alley lying east of and adjoining lots one (1) to twelve (12) both inclusive) in Block "B" in the resubdivision of Blocks eight (8) and "B" White's Addition to -Evanston, in the southeast one -quarter (T) of Section nineteen (19), Township forty-one (41) North, Range fourteen (14) East of the Third (3rd) Principal Meredian, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland cement concrete pavement, using a bituminous filler strip f-or expansion joints in pavement, constructing necessary surface drainage sewer, catch b asins, catch basin connections to surface drainage sewer and manhole, adjusting macadam paving adjoining and connecting with the proposed improvement; and presented to the City Council of the City of Evanston a. recom- mendation that such improvement be made, I herewith submit an estimate of thecost of such improvement as described in said resolution, including labor, material and lawful expenses atteriding the proceedings for making said improvement and the cost of making and cone cting the assessment as provided by law, viz; ESTIMATE OF COST 275 Cu. yds . of grading @ $1: 60 per cu . yd . 440.00 1200 sq. yds of Portland Cement Concrete paving complete in place @ $2.75 per sq. yd. 3,3001.00 325 Lin. ft. of bituminous filler strip for expansion joints in paving, laid complete in place O 10.e pet lin. ft. 32.50 152 450 Lin. ft. of surface drainage sewer, average depth , of cut six (6) feet, including trenching and backfilling, laid complete in place ® $2.25 .per line f t. e e e e e e e $ 1,012.50 2 Brick catch basins including cast iron covers plank bottoms, excavation and back filling complete in place @ $75.00 each 150.00 20 Lin.ft. of catch o asin connections to surface drainage sewer, average depth of cut four and one-half (41) feet, including trenching and back filling, laid complete in place Q $1e00 per line fte e . . e o - 9 20.00 1 Brick manhole including cast iron cover, excavation and back filling complete in place 75'.00 75 sq. yds. of macadam paving; adjusted to grade 0 $1.20 per sq. yd. . . . e . . . . 90.00 For lawful expenses attending the proceedings for making said improvement and thecost of making and collecting the assessment therefor, not to exceed six per centum )6%) of the above, to -wit: $5,120.00 307.20 Total $5, 427 .20 And I hereby certify that in my opinion the above estimate does not exceed 'the probable cost of the above proposed improvement and the lawful expenses attending the same. Wm. Blanchard, Engineer of the 'Board of Local Im- provements of the City of Evanston. Dated, Evanston, Illinois. September 19, 1922. AN ORDINANCE Providing that the Public Alley, extending from the north line of Kedzie Street to the south line of Main Street, said alley lying east of and adjoining lots one (1) to twelve (12) (both inclusive) in Block "B" in tie resubdivision of blocks eight (8) and "B" White's Addition to Evanston, in the southeast one - quarter (J) of Sectio# nineteen (19), Township forty-one (41) North, Range fourteen (14) East of the Third (3rd) Principal Meridian, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland Cement Concrete pavement, using a bituminous filler strii) for expansion joints in pavement, constructing; necessary surface drainage sewer, catch basins, catch basin connections to surface drainage sewer and manhole, adjusting macadam paving adjoining and connecting with the proposed improvement. BE IT GRDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. Thata local improvement shall be made within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local improvement is as follows, to -wit: That the Public Alley, extending from the north line of Kedzi,e Street to the south line of Main Street, said alley lyin east of and adjoining lots one (1) to twelve (12) (both inclueive� in Block "B" in the Resubdivision of blocks eight (8) and "B" White's Addition -to Evanston, in the southeast one -quarter (-J) of -section nineteen 119), Townshi forty-one (41) North, Range fourteen (14) S East of the Third (3rd Principal Meredian, in the City of Evanston County of Cook, State of Illinois, be and the same is hereby ordered _improved as follows: Location of Pavement The center line of the pavement herein provided to be con- structed shall coincide with the center line of the alley within which said pavement is included. iZ1919815� Width of Pav e ine n t The width of the paverrient herein provided to be con- structed shall be fifteen (15) feet. Grade of Pavement The grade of the upper surface of the finished pavement herein provided to be constructed is hereby established as follows, measured in feet and decimal parts of a foot above the datum plane of the City of Evanston, to -wit: Outer Edges Center line Transverse Section of Alley of Pave:.ient Of Pavement At the north line of Kedzie Street 11.00 10.75 At eighty-five (85) feet north of the north line of Kedzie Street. 11.50 11.25 At one hundred ninety-five (195) feet north of north line of Kedzie Street 11.00 10.75 At three hundred fifty (350) feet north of the north line of Kedzie Street. 12.80 12.55 At four hundred twenty-five (425) feet north of north line of Kedzie Street 12.30 12.05 At four hundred seventy-five (475) feet north of north line of Kedzie Street 12.85 12.60 Ak +-- Rl1 ifli line of Vain Street.- 11.80 11.55 ALLEY PAVING The grade of the center line and outer edges of the pavement at intermediate points shall be respec- tively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane of the low water mark of Lake Michigan in the year A. D. 1847, as established by the Trustees of Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the northwest corner of Davis street and Sherman Avenue, in said City of Evanston. The upper surface of the pavement herein provided to be constructed, when completed, shall conform to the arc of a circle passing through the respective grade points in the center line and at the outer edges of ine pavement, and shall be true and symmetrical. GRADING The alley herein provided to be improved shall be cleaned prior to the paving thereof, in a thorough manner of all deteriorated planking, blocking or other debris. The soil of the roadway shall then be ex- cavated or filled upon with other suitable soil, as the case may be, to such depth and shape as will bring the upper surface of the finished pavement, when constructed as hereinafter specified, to the elevations and grades hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable self- propelling roller or flooding with water as the case may require. Depressions or holes appearing as the pre- paration of the sub -grade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left in the sub -grade, shall be removed by the contractor without extra charge. CONCRETE PAVEMENT —ALLEY Upon the subgrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement, composed of Portland cement, sand and gravel mixed by volume in ratios of one part of cement, two parts sand, and three parts of gravel with sufficient clean water to give proper plasticity and in the manner here- inafter set forth. The concrete shall be spread on th e sub -grade in such quantity and to such form that af- ter being compacted in place it shall have a uniform thickness of six inches. The Portland cement to be used in making this concrete pavement shall be of such quality that repre- sentative samples collected from shipments made for the job shall be capable of passing the following tests for fineness, soundness, initial setting, and tensile strength, to -wit: Fineness. The cement shall be ground so that 92 °Jo will pass through a standard sieve, having 10,000 meshes and 75°fo will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no check- ing, warping or swelling. Broken briquette of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified for the neat pat. Setting. The cement tivhen mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show tensile strength not less than as follows: 154 Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) .................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. The sand to be used for making the concrete shall be free from dust, clay, loam, vegetable or other deleterious matter. The grains of sand shall be angular and shall range in size from one -quarter inch down to the finest; but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind - drifted sand shall not be used. The sand shall be of such quality that the mortar composed of one part of the cement hereinbefore specified and three parts of sand, by weight, when made into briquettes, will de- velop a tensile strength at least equal to the strength of a mortar of the same consistency and proportion made with the same cement and Standard Ottawa sand. In no case shall the sand, when used for this concrete, contain frost or lumps of frozen matter. The gravel to be used in making this concrete shall be clean, hard, free from dust, loam, vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable sizes grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (1-4) inch. In no case shall the gravel when used for this concrete contain frost or lumps of frozen matter. The sand and gravel shall be clean when delivered on the job, and shall be kept clean until used The method used for treasuring the ingredients in the concrete shall be one that will insure a uniform proportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be considered one cubic foot. The concrete shall be mixed in a batch machine mixer of a type that will insure a uniform distribution of the ingredients throughout the mass. Ingredients of the concrete or mortar shall be mixed to the de- sired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in color, and homogeneous. Clean water, free from oil, acid, alkali or vegetable matter shall be ad- mitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the gravel from the mortar. The concrete shall be handled rapidly from the mixer to its place in the pavement. Successive batches shall be deposited in place on the sub -grade in a continuous operation so that sections of the pavement be- tween expansion joints, hereinafter specified, shall be entirely completed and without the use of inter- mediate cross forms or bulk -heads. Concrete shall not be retempered or used that has partially hardened. The concrete shall be compacted and brought to the established grade and shaped with a template or straight edge, and shall be brought to a comparatively even surface. After the concrete has been so brought to grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even sur- face. Said roller shall not be less than five feet in length, and not less than eight (8) inches not more than twelve (12) inches in diameter and weighing not less than one hundred pounds (100 lbs.). The roller shall be operated across the pavement from side to side of same, by means of ropes attached to each side of the roller, at such angle with the center line of the pavement as to permit the roller to advance along the pavement two feet for each time across. After the roller has covered a given area in the manner de- scribed, the same area shall be similarly rolled by the roller for not less than three (3) times at intervals of fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may be necessary to remove excess water. After the rolling has been completed the pavement shall be finished by two (2) applications of a belt made of canvas, not less than six (6) inches wide and not less than two (2) feet longer than the width of the pavement. For the first application, vigorous strokes at least twelve (12) inches long shall be used. The longi- tudinal movement of the belt along the pavement shall be very slight. The second application of the belt shall be immediately after the water glaze or sheen disappears; and the stroke of the belt shall be not more than four (4) inches, and the longitudinal movement shall be a continuous forward movement. A suitable bridge to span the width of the pavement shall be used to finish the joints, no part of which shall be in contact with the finished work. A notched straight edge ten (10) feet in length shall be used for testing each transverse joint, prior to and subsequent to final finishing. The straight edge shall be placed over the joint, parallel to the center line of the pavement and moved across from curb to curb. When the surface of the concrete upon testing shows to be high or low, concrete will be added or removed to bring the surface its true shape. The concrete adjoining transverse joints shall be dense in character and after rolling shall be finished with a wood float, which is divided through the center and which will permit finishing on both sides of the filler at the same time. The finished surface of the concrete shall not vary more than one -eighth (1-8) of an inch from a two foot straight edge placed upon the concrete in any position. 1�i9i98 155 , Workmen shall not walk on the freshly laid concrete; and no one shall be allowed on the concrete after it has been worked into form and position with a template or straight edge, until it has thoroughly hardened. EXPANSION JOINTS Transverse expansion joints not less than three -eighths (318) inch or more than one-half (1I2) inch in width shall be placed across the pavement at right angle to the center line of the roadway; spaced so as not to exceed thirty-three and one-third (33 113) feet apart. All expansion joints shall extend through the entire thickness of the pavement. In these expansion joints there shall be placed a prepared strip of bi- tuminous filler of the thickness hereinbefore specified for expansion joints and extending from the bottom of the pavement herein specified to the upper surface of the finished pavement. The upper edges of all joints and the upper outer edges of the pavement shall be neatly troweled to a radius of one -quarter (%) inch. All metal, manholes, catch basin covers, and other fixed objects shall be separated from the concrete pavement by a joint filler of the same character as hereinbefore specified for expansion joints; which joint filler shall extend through the entire thickness of the pavement. PROTECTION PLATES As soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be spray- ed with water; and it shall be kept thoroughly vet for at least ten days. As soon as it can be done without damage to the concrete, the surface thereof, during hot and dry weather and if unshaded shall be covered with not less than one inch of earth, sawdust, straw or other suitable and available material, which cover- ing shall be kept vet for at least four days after being placed. In dry and hot weather freshly laid con- crete shall be protected by a canvas covering until it can be sprinkled or covered, as specified. The water and concrete aggregates shall be heated if at any time during the progress of the work the temperature is, or from weather reports will likely during the next twenty-four hours drop to (35) thirty- five degrees Fahrenheit. The concrete shall be protected against freezing for at least ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established line, and their upper edges shall conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have previously been used. The pavement shall be thoroughly cleaned and open to the public as soon as the cement has set suffici- ently to receive the traffic without injury to the surface or body of the concrete. SURFACE DRAINAGE SEWER# For the purpose of carrying off storm waters from the surface of the pavement herein provided to be constructed, surface drainage sewer# of vitrified, salt glazed, tile pipe shall be laid as hereinafter specified. Said sewers shall be laid in open trenches in the ground in such manner as to conform to the elevations, lines and grades hereinafter specified. The pipe used in the construction of said sewer$ shall be of the type known as "Bell and Spigot" having an internal diameter of nine (9) inches, the metal of which pipe shall have a thickness of thirteen -sixteenths (13/16) of an inch and shall be not less than two (2) feet in length, cylindrical, straight, smooth, thoroughly vitrified, salt glazed, free from cracks or blisters and of the best quality and workmanship. The joints between the pipes shall be securely sealed with a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1/ ) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The joints between said pipes shall be wiped and pointed inside the pipes. The interior of the pipes shall be kept free from dirt or refuse of every description and shall be left clean at the completion of the work. The open trenches excavated to receive said sewerp, shall be made at least twelve (12) inches wider than the ex- terior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing joints. The materials excavated shall be kept compactly along the sides of the trench and shall be backfilled as soon as practic- able in order to occasion the least possible inconvenience to the public in use of the street or alley as the case may be. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. The open and unconnected ends of said sewer&shall each be securely closed with a salt glazed, vitrified tile disc, and sealed in the manner above specified for joints between pipes. Said sewer or sewers as the case may be shall be laid as follows, to -wit: Ina and alonS the center line of said alley from and connecting with the sewer now in place along the center line of Main Street, to a paint four hundred five k405) feet south of the south line of said Main Street. The internal diameter of this sewer shall be nine (9) inches. At its connection with said sewer in Main Street the eleva- tion of the inside bottom of this sewer shall be five (5) feet above the datum -olane hereinbefore defined and the grade thereof shall rise thence at a uniform rate to an elevation of seven (7) feet above said datum plane at its terminus. t , Ordinance and o Contract Form Alley Pavement. CATCH BASINS For the purpose of receiving storm waters from the surface of the pavement herein provided to be con- structed - Two (2 ) catch basins shall be constructed at the necessary points along the center line of said pavement. Said Catch basins sholl be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catch basins, when } in place, to the upper surface of the proposed pavement. Said catch basins shall be cylindrical in shape having an internal diameter of thirty-six (36) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by means of three (3) header courses of brick, laid endwise and horizontally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catch basins. Said catch -basins shall have walls eight (8) inches thick built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch - basins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 1J2) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch -basins shall each rest on a solid bottom of two (2) inch pine planks, laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure.fifty-four (54) inches in diameter and shall have its upper side placed four(4) feet below the upper surface of the brick wall for said catch -basin. Said catch -basins shall be connected with the sewer, or sewers as the case may be, now existing, or herein provided to be constructed, as the case may be, in and along the center line of the said pavement, along which center line and over said sewer or sewers, the respective catch -basins are to be constructed. Said catch -basins shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed tile pipe having an internal diameter of six (6) inches and of the type known as "Bell and Spigot," the metal of which pipes shall be three -fourths (314) of an inch in thickness and shall be not less than two (2) feet in length. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipe shall be se- curely sealed with a mortar of the quality herein required for brick walls in catch -basins. Each catch -basin connection shall start in a six-inch "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the said sewer at a point not less than eight (8) feet in advance of the center of the catch -basin measured along and in the down stream direction of the sewer. The pipe shall be laid true to line and grade and the connection shall enter the catch -basin through the brick wall thereof at a point two and one-half (2 112) feet above the top of the plank bottom of said catch -basin. The pipe entering the catch -basin through the brick wall thereof, shall be an elbow with the bell end turned downward inside the catch -basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be back -filled as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the alley. The trenches shall_ be promptly back -filled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. ff i Said catch -basins shall each be equipped and fitted with a circular cast iron grate cover weighing not less than three hundred and sixty (360) pounds. Said grate to be so constructed as to freely admit water from the surface of the pavement to the catch -basin) and having a vertical height of nine (9) inches, the opening in said cover shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) inches at the top thereof. The diameter of the lid or grate for said covers shall be 22 314 inches. Said catch -basin covers herein provided to be furnished and set shall rest on the walls of the catch -basins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catch -basins. The walls shall be built to such height as will bring the tops of the covers when set in 'place, to the upper surface pf the pavement at points where said catch -basins are located. Said catch -basins herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: One at a point one hundred seventy-five (175) feet south of the south line of Main Street. One at a point four hundred five (405) feet south of the south line of Main Street. ,. MANHOLES :5 1 z One (1) brick manhole* shall be built of hard burned sewer brick, upon the sewer or sewers, as the case may V be, hereinbefore provided to be constructed and shall be located at the points hereinafter specified. Said manhole/ shall A. be placed vertically in the ground over the center line of the sever or sewers, as the case may be, hereinbefore specified in such manner as to bring the tops of the iron covers herein required for said manholes when in place to the upper surface of the proposed pavement. Said manholes shall be cylindrical in shape having an internal diameter of thirty- six (36) inches at the upper surface of the base and upward to the lowest header course being uniformly drawn in to twenty -lour _(24) inches in diameter at the top of the masonry by means of six (6) header courses of brick laid end- wise and horizontally, the diameter being decreased uniformly by each course to fit the iron covers, hereinafter specified to be furnished and set on the walls of said manhole* The walls of said manhole& shall rest upon the base thereof without offsetting and shall be eight (8) inches thick, built (except as above specified for header courses) of alter- nate vertical and horizontal courses of brick. The brick used in the construction of said manholes shall be thoroughly wetted with water before being placed and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manhole& shall begin at a point five (5) inches below the outside bottom of the sewer hereinbefore specified and shall extend upward to said outside bottom and along the skies of said sewer to a point midway between the top and bottom of said sewer, said base to be circular in form, the diameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manholearshall be neatly removed leaving the Iower half thereof to form the invert of the manhole. Said manholes shall each be equipped with a circular castiron cover having a tight lid, weighing not less than five hundred and forty (540) pounds, of the type known as "Chicago City Standard Heavy" having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two (22) and three - fourths (%) inches at the top thereof. Said manhole covers herein specified to be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the tops of the walls of said manhole*, which walls shall be built to such height as will bring the tops of the covers when set in place, to the surface of the pavement hereinbefore specified. Said manholes herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: At a point two hundred fifty (250) feet south of the south line of Main Street. ADJUS I ETST OF PRESENT MACADAM PAVING The present macadam paving where the same adjoins the pro - Posed improvenent shall be acid us ted in such mar!-ner that after having, been excavated..br filler :upon; as -the case may be,_with materials of kind and quality composing said macadam paving and having been thoroughly compacted it shall form a base or founda- tion for a bituminous macadam pavement to be placed thereon. The upper surface of said base or foundation when completed shall be two (2) inches below the finished grade of the proposed improve- ment where same adjoins said macadam paving. Upon the base or foundation, prepared as hereinbefore speci- fi ed, there shall be spread a layer of clean, hard broken lime- stone ranging in size from a maximum dimension of two inchs to a minimum dimension of three -fourths inch. This layer of lime- stone shall be evenly spread, and in sufficient quantity to in- sure a thickness of two (2) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self rpopelling road roller weighting not less than ten tons. The initial rolling; shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial; rolling of the limestone is finished and the layer thereof is dry, there shall be applied to the lime- --stone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one (1) gallon thereof being; evenly spread on and in each and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which _. "•,r�.�.wr_.....----.- z-.,....._,.._--•..— .. .___.._....__..,.fi�,..A_•�'�... .--..... _ . .:.-�.-r.re.-.�--....-,Kra- _ _ . .. -the same shall hate been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to,a size ranging from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diameter. The limestone screenings shall be used in sufficient quantity to snugly fill the inter- stices in the course of stone to which same is applied. Imme- diately following the spreading of these limestone screenings the paving so covered, shall be given a thorough rolling with a roller of the weight and type hereinbefore named. This rolling shall continue until the screenings are driven into, and thorough- ly bonded with, the layer of stone to which same is applied. The surface of the paving shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shal2 be applied to the surface a second application of asphaltic cement of the same kind and quality as that used in the first application. This second appli- cati on shall b e sufficient in quantity and so applied and spread., as to insure not less than three-quarters (3/4) gallon thereof being evenly spread and used on each and every square yard of paving. Iirimediately after the second application of asphaltic cement is made and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a nnximvm dimension of three -fourths inch to a m:Lnimum dimension of one -eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one hundred and f (..rty-four th of a cubic yard thereof being evenly spread and used on each and every square yard of paving. A final rolling of the paving shall closely follow the spread- ing thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the pavement is thoroughly compacted, and brought to a surface, free from de- pressions and true to form and grade. Any and all depressions developing during progress of the rollin,, reuuired in process of constructing the pavement shall be filled, as the rolling continues, with the sane respective kind of stone as that on which the roller is operating. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following requirements and of passing the following tests, to-wir : • (1) The asphaltic cement shall consist of not less than siXty-five per cent refined, solid natural asphalt, and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manu- facturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so prepared for use as to best adapt it to theclimatic and traffic conditions of the roadway on which it is to be used. (2) Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3) It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahren- heit under 200 grams for one minute. (4) It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products or other injurious matters, and the various hydrocarbons composing it shall be present in hor_iogeneous solution, no granular consti- tuent being present. (5) It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6) 50 grams of the cement upon being maintained at a uniform temp�:ra,ture of 325 degrees Fahrenheit for five hours in a cylindri- V019198 j �1 cal vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7) It shall be soluble in chemically pure carbon disul- phide at air temperature to the extent of at least 95%. (8) Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98L°o shall be soluble in cold carbon tetrachloride. (9) The b itumien of the cement shall be soluble in petro- leum nap tha, at the air temperature to the extent of not less than 72 per cent,. (10) Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue cnkP_ MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to-wi.t:. Fineness. The cement shall be so ground that 92 % will pass through a standard sieve, having 10,000 meshes and 75% will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in hater) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1- day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the .period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or &stamp of the maker; and shall be thoroughly protected azajnat d_a_maae, until_used. - — 160 SEWER PIPE The tile ,pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said !pipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of . a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of Three hundred seven and twenty hundredths dollars ($ 307.20 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of Three hundred seven and twenty -hundredths dollars ($307.20 )� shall be applied toward the cost of snaking, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into five installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court Of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evwnston en the 19th day of Sept. A.D. 1922. Approved: Sept. 20th, 1922. John F. Hahn, H.P. Pearsons , City Clerk. Mayor . 1119198 RECOM1+LENI)AT ION, ESTIMATE AND ORDI N.WCE REC aME15DATION BY BOARD OF LOCAL II\riM- OVEI,=I,TTS . To the Mayor and Aldermen of the City of Evanston in the City Council Ascerribled: We herewith submit an ordinance providing; that the Public alley; extending from the north line of Grove :street to the south line of Davis Street, in Block sixty-one (61), Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving; with a Portland cement concrete pavement, using a bituminous filler strip for expansion joints in pavement, constructing necessary surface drainage serer, catch basin, catch basin connection to surface drainage sewer and adjusting brick paving adjoining; and connect- ing with the proposed improvement; together with an estimate of the cost of said improvement and recommend the passage of said ordinance and the making of the improvement contemplated' therein. Respectfully submitted, H.P. Pearsons, Vhn. Blanchard, Hal W. Smith. Board of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, Illinois, September 19, 1922. ESTIi A'2E 01' EATGII?EER OF BOARD OF LOCAL I=.1PROV12Q1TTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that the Public Alley, extending from the north line of Grove Street to the south line of Davis Street, in Block sixty-one (61) Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland cement concrete pavement, using a bituminous filler strip for expansion joints in pavement, con- structing necessary surf,ice drainage sewer, catch basin, catch basin connection to surface drainage sewer and =adjusting brick paving adjoining and connecting with the proposed improvement; and presented to. the City Council of the. City of Evanston a recommendation that such improvement be made, I herewith submit an estimate of the cost of such improvement as described in caid resolution, includin„ labor, material and lawful ex,.)enses attending the proceedings for making said improvement and the cost of making and collecting; the assessment, as provided by 1alu, viz : ESTIMATE OF COST. 200 CU. YDS. OF GRADING @ $p1.60 per cu. yd. 320.00. 1100 sq. yds. of Portland cement concrete paving complete in place @ $2.75 per sq. yd. . . 3,025.00 275 lin. ft. pf bituminous filler strip for expansion joints in paving, laid complete in place @ 10¢ per lin. ft. 260 lin. ft. of surface drainage sewer, average depth of cut six (6) feet, including trenching ,and back filling, laid complete in place @ $2.35 per lin. ft. . . . 1 brick catch basin, including cast iron cover, plank bottom, excavation and back filling, comple-te in place 10 lin, ft. of catch basin connection to surface drainage sewer, average -depth of cut five (5 ) feet, including trenching and bagk filling, laid comple to in place CQ �1.00• pe-r lin. i't. 27.50 611.00 75.90 10.00 162 47 sq. iTds. of brich paving adjusted_ to grade $1.20 per sq. yd. $56.40 For lm�iful expenses attending the proceedings for making said improvement and the cost of making: and collect_-ng the assessment therefor, not to exceed six per centum 16%) of the above, to -wit: 41V124.90 247.49 Total $ 4,.372.39 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above pro- posed improvement and the lawful expenses attending the same. Dated, Evanston, Illinois, September 19, 1922. Wm. Blanchard, Engineer of the Board of Local Improvements of the City of Evanston. AN ORD INANCE Providing that the Public Alley, extending from the north line of Grove Street to the south line of Davis Street, in Block sixty- one (61), Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland cement concrete pavement, uQ ing a bituminous filler strip for expansion joints in pavement, constructing necessary surface drainage sewer, catch basin, catch basin connection to surface drainage sewer and adjusting brick paving. adjoining and connecting with the proposed improvement. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvement shall be made within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local improvement is 'as follovis, to -wit: That the Public Alley, extending from the north line of Grove Street to the south line of Davis Street, in Bloxk ,Sixty- one (61) , Village of Evanston, in the City of Evanston, County of Cool:, State of Illinois, be and the same is hereby ordered im- proved as follows: Location of ,Pavement The center line of the pavement herein provided to be constructed shall coincide with the center line of the alley within which said pavement is included. Width of Pavement The width of the pavement herein provided to be construct- ed -shall be nineteen •(19). feet. Grade of Pavement The grade of the upper surface of the finished pavement herein provided to. be_ conot ruc•ted is, hereby gstablished as follows; measured in feet and decimal parts of a foot above the datum plane of the City of Evanston, to -writ : Outer Edges Center line Transverse Section Alley- of Pavement of Pavement At the north line of Grove Street. 26.00 25.75 At seventy-five (75) feet north of the north line of Grove Street.. 26.85 26.60 At two hundred sixty-three (263) feet north of the north line of Grove Street. 25.90 25.65 At four hundred (400) feet northof the north line of Grove Street. 26.60 26.35 At the south line of Davis Street. 25.75 25.50 Ik- 163 ALLEY PAVING The grade of the center line and outer edges of the pavement at intermediate points shall be respec- tively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane of the low water mark of Lake Michigan in the year A. D. 1847, as established by the Trustees of Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the northwest corner of .Davis street and Sherman Avenue, in said City of Evanston. The upper surface of the pavement herein provided to be constructed, when completed, shall conform to the arc of a circle passing through the respective grade points in the center line and at the outer edges of the pavement, and shall be true and symmetrical. GRADING The alley herein provided to be improved shall be cleaned prior to the paving thereof, in a thorough manner of all deteriorated planking, blocking or other debris. The soil of the roadway shall then be ex- cavated or filled upon with other suitable soil, as the case may be, to such depth and shape as will bring the upper surface of the finished pavement, when constructed as hereinafter specified, to the elevations and grades hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable self- propelling roller or flooding with water as the case may require. Depressions or holes appearing as the pre- paration of the sub -grade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left in the sub -grade, shall be removed by the contractor without extra charge. CONCRETE PAVEMENT —ALLEY Upon the subgrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement, composed of Portland cement, sand and gravel mixed by volume in ratios of one part of cement, two parts sand, and three parts of gravel with sufficient clean water to give proper plasticity and in the manner here- inafter set forth. The concrete shall be spread on the sub -grade in such quantity and to such form that af- ter being compacted in place it shall have a uniform thickness of six inches. The Portland cement to be used in making this concrete pavement shall be of such quality that repre- sentative samples collected from shipments made for the job shall be capable of passing the following tests for fineness, soundness, initial setting, and tensile strength, to -wit: Fineness. The cement shall be ground so that 92 °Jo will pass through a standard sieve, having 10,000 meshes and 757o will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no check- ing, warping or swelling. Broken briquette of the neat cement which have remained in air one day and in water six days shill likewise withstand the steaming and boiling specified for the neat pat. Setting. The cement when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ........................................................ 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) .................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. The sand to be used for making the concrete shall be free from dust, clay, loam, vegetable or other deleterious matter. The grains of sand shall be angular and shall range in size from one -quarter inch down to the finest; but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind - drifted sand shall not be used. The sand shall be of such quality that the mortar composed of one part of the cement hereinbefore specified and three parts of sand, by weight, when made into briquettes, will de- velop a tensile strength at least equal to the strength of a mortar of the same consistency and proportion made with the same cement and Standard Ottawa sand. In no case shall the sand, when used for. this concrete, contain frost or lumps of frozen matter. The gravel to be used in making this concrete shall be clean, hard, free from dust, loam, vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable sizes grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (1-4) inch. In no case shall the gravel when used for this concrete contain frost or lumps of frozen matter. . 164 The sand and gravel shall be clean when delivered on the job, and shall be kept clean until used The method used for measuring the ingredients in the concrete shall be one that will insure a uniform proportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be considered one cubic foot. The concrete shall be mixed in a batch machine mixer of a type that will insure a uniform distribution of the ingredients throughout the mass. Ingredients of the concrete or mortar shall be mixed to the de- sired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in color, and homogeneous. Clean water, free from oil, acid, alkali or vegetable matter shall be ad- mitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the gravel from the mortar. The concrete shall be handled rapidly from the mixer to its place in the pavement. Successive batches shall be deposited in place on the sub -grade in a continuous operation so that sections of the pavement be- tween expansion joints, hereinafter specified, shall be entirely completed and without the use of inter- mediate cross forms or bulk -heads. Concrete shall not be retempered or used that has partially hardened. The concrete shall be compacted and brought to the established grade and shaped with a template or straight edge, and shall be brought to a comparatively even surface. After the concrete has been so brought to grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even sur- face. Said roller shall not be less than five feet in length, and not less than eight (8) inches not more than twelve (12) inches in diameter and weighing not less than one hundred pounds (100 lbs.). The roller shall be operated across the pavement from side to side of same, by means of ropes attached to each side of the roller, at such angle with the center line of the pavement as to permit the roller to advance along the pavement two feet for each time across. After the roller has covered a given area in the manner de- scribed, the same area shall be similarly rolled by the roller for not less than three (3) times at intervals of fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may be necessary to remove excess water. After the rolling has been completed the pavement shall be finished by two (2) applications of a belt made of canvas, not less than six (6) inches wide and not less than two (2) feet longer than the width of the pavement. For the first application, vigorous strokes at least twelve (12) inches long shall be used. The longi- tudinal movement of the belt along the pavement shall be very slight. The second application of the belt shall be immediately after the water glaze or sheen disappears, and the stroke of the belt shall be not more than four (4) inches, and the longitudinal movement shall be a continuous forward movement. A suitable bridge to span the width of the pavement shall be used to finish the joints, no part of which shall be in contact with the finished work. A notched straight edge ten (10) feet in length shall be used for testing each transverse joint, prior to and subsequent to final finishing. The straight edge shall be placed over the joint, -parallel to the center line of the pavement and moved across from curb to curb. When the surface of the concrete upon testing shows to be high or low, concrete will be added or removed to bring the surface its true shape. The concrete adjoining transverse joints shall be dense in character and after rolling shall be finished with a wood float, which is divided through the center and which will permit finishing on both sides of the filler at the same time. The finished surface of the concrete shall not vary more than one -eighth (1-8) of an inch from a two foot straight edge placed upon the concrete in any position. Workmen shall not walk on the freshly laid concrete; and no one shall be allowed on the concrete after it has been worked into form and position with a template or straight edge, until it has thoroughly hardened. EXPANSION JOINTS Transverse expansion joints not less than three -eighths (318) inch or more than one-half (112) inch in width shall be placed across the pavement at right angle to the center line of the roadway; spaced so as not to exceed thirty-three and one-third (33 113) feet apart. All expansion joints shall extend through the entire thickness of the pavement. In these expansion joints there shall be placed a prepared strip of bi- tuminous filler of the thickness hereinbefore specified for expansion joints and extending from the bottom of the pavement herein specified to the upper surface of the finished pavement. The upper edges of all joints and the upper outer edges of the pavement shall be neatly troweled to a radius of one -quarter (/ ) inch. All metal, manholes, catch basin covers, and other fixed objects shall be separated from the concrete pavement by a joint filler of the same character as hereinbefore specified for expansion joints; which joint filler shall extend through the entire thickness of the pavement. PROTECTION PLATES As soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be spray- ed with water; and it shall be kept thoroughly wet for at least ten days. As soon as it can be done without damage to the concrete, the surface thereof, during hot and dry weather and if unshaded shall be covered with not less than one inch of earth, sawdust, straw or other suitable and available material, which cover- ing shall be kept wet for at least four days after being placed. In dry and hot weather freshly laid con- crete shall be protected by a canvas covering until it can be sprinkled or covered, as specified. IZ0198 The water and concrete aggregates shall be heated if at any time during the progress of the lvork the temperature is, or from weather reports will likely during the next twenty-four hours drop to (35) thirty- five degrees Fahrenheit. The concrete shall be protected against freezing for at least ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established line, and their upper edges shall conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have previously been used. The pavement shall be thoroughly cleaned and open to the public as soon as the cement has set suffici- ently to receive the traffic without injury to the surf ace or body of the concrete. SURFACE DRAINAGE SEWEhy For the purpose of carrying off storm waters from the surface of the pavement herein provided to be constructed, Q, surface drainage sewer, of vitrified, salt glazed, tile pipe shall be laid as hereinafter specified. Said sewed shall be laid in open trenches in the ground in such manner as to conform to the elevations, lines and grades hereinafter specified. The pipe used in the construction of said sewer& shall be of the type known as "Bell and Spigot" having an internal diameter of nine (9) inches, the metal of which pipe shall have a thickness of thirteen -sixteenths (13/16) of an inch and shall be not less than two (2) feet in length, cylindrical, straight, smooth, thoroughly vitrified, salt glazed, free from cracks or blisters and of the best quality and workmanship. The joints between the pipes shall be securely sealed with a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 / ) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The joints between said pipes shall be wiped and pointed inside the pipes. The interior of the pipes shall be kept free from dirt or refuse of every description and shall be left clean at the completion of the work. The open trenches excavated to receive said sewers, shall be made at least twelve (12) inches wider than the ex- terior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing joints. The materials excavated shall be kept compactly along the sides of the trench and shall be backfilled as soon as practic- able in order to occasion the least possible inconvenience to the public in use of the street or alley as the case may be. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. The open and unconnected ends of said sewer$ shall each be securely closed with a salt glazed, vifrified tile disc, and sealed in the manner above specified for joints between pipes. Said sewer or sewers as the case may be shall be laid as follows, to -wit: (1) In and along the center line of said a_ -ley from and connecting with the sever now in place along the center line of Davis Street to a point one hundred eighty-seven (187) feet south of the south line of said Davis Street. The internal diameter of this sewer shall be nine (9) inches. At its connection wit the aforesaid sewer in Davis Street; the elevation of theinside bottom of this server shall be nineteen and eight -tenths (19.8) feet above the datum plane herein - before defined and shall rise thence at a uniform rateto an elevation of twenty-one (21) feet above said datum plane, at the terminus thereof. CATCH BASIN# For the purpose of receiving storm waters from the surface of the pavement herein provided to be con- structed one (1) catch basing shall be constructed at the necessary points along the center line of said pavement. Said Catch basing sholl be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron coverer herein required for said catch basins, when in place, to the upper surface of the proposed pavement. Said catch basin& shall be cylindrical in shape having an internal diameter of thirty-six (36) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by means of three (3) header courses of brick, laid endwise and horizontally, to fit the iron coveriv hereinafter specified to be furnished and set on the walls of said catch basin#. Said catch -basins shall have walls eight (8) inches thick built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch - basins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 112) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch -basins shall _ewO rest on a solid bottom of two (2) inch pine planks, laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure,fifty-four (.� inches in diameter and F shall have its upper side placed four(4) feet below the upper surface of the brick wall for said catch -basin: Said catch -basin, shall be connected with the sewer, or sewers as the case may be, now existing, or herein provided to be constructed, as the case may be, in and along the center line of the said pavement, e along which center line and over said sewer or sewers, the respective catch -basin& are to be constructed. Said catch -basin& shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed the pipe having an internal diameter of six (6) inches and of the type known as "Bell and Spigot," the metal of which pipes shall be three -fourths (314) of an inch in thickness and shall be not less than two (2) }` feet in length. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipe shall be se- curely sealed with a mortar of the quality herein required for brick walls in catch -basin#, Each catch -basin connection shall start in a six-inch "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the said sewer at a point not less than eight (8) feet in advance of the center of the catch -basin measured along and in the down stream direction of the sewer. The pipe shall be laid true to line and grade and the connection shall enter the catch -basin through the brick wall thereof at a point two and one-half (2 112) feet above the top of the plank bottom of said catch -basin. The pipe entering the catch -basin through the brick wall thereof, shall be an elbow with the bell end turned downward inside the catch -basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be back -filled as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the alley. The trenches shall be promptly back -filled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch-basiniwshall each be equipped and fitted with a circular cast iron grate cover weighing not less than three hundred and sixty (360) pounds. Said grate to be so constructed as to freely admit water from the surface of the pavement to the catch -basin) and having a vertical height of nine (9) inches, the opening in said cover shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) inches at the top thereof. The diameter of the lid or grate for said coverAwshall be 22 314 inches. Said catch -basin cover`.herein provided to be furnished and set shall rest on the walls of the catch -basins herein specified to be constructed. Said cover& shall be imbedded in a mortar- of the quality herein required for brick walls in said catch -basins. The walls shall be built to such height as will bring the tops of the covers. when set in 'place, to the upper surface of the pavement at points where said catch -basin&, are located. Said catch-basiry herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: On the center line of the alley (herein provided to be paved) at a point one hundred eighty—seven (187) feet south of the south line of Davis Streeo ADJUSTMENT OF PRESENT BRICK PAVING The present brick paving, where the same adjoins the proposed improvement, shall be adjusted to conform to the upper surface of the proposed improvement when completed and in place. Said adjustment shall be made in the same manner and with the same kind of material originally used in constructing said present brick paving. MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3). per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for l fineness, soundness, initial setting and tensile strength to -wit: %Z19198 167 i Fineness. The cement shall be so ground that 92 % will pass through a standard sieve, having 10,000 meshes and 757o will pass through a sieve having 40,000 meshes per square inch. Soundness.. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 23 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 23 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The tile pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said Spipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. at a --+ r All the material used in the construction of the impnovement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of Two hundred forty-s even and forty -+nine hundredths dollars (1247.49 ), being the amount'included in the estimate of said Engineer hereto attached, as the'cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of Two hundred forty-seven and forty-nine hundredths dollars ($�47.49 ), shall be applied toward the cost of malting, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into installments iri the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annuin according to law until paid. Section S. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the 17ayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City -of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the • same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 19th day of Sept. A.D.1922. Approved: Sept. 20th, 1922. John F. Hahn, H.P. Pearsons, City Clerk. Mayor. L, . i998 TIM., AN ORDINANCE ' �Zy. OF TI3E -CITY OF EVANSTON FOR A GENERAL TAX LEVY WITHIN THE LIMITS OF THE DISSOLVED AND DISCONTINUED EVIJi,STON NORTHWEST PARK DIOTRICT FOR THE FISCAL YEAR OF SAID EVANSTON NORTHWEST PARK DISTRICT ENDS_' G MARCH 31, 1923. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVAiISTON, ILLINOIS: Section 1. That whereas the Evanston Northwest Park District whose limits lie Wholly within the City of Evanston has been duly dissolved and discontinued as the result of an election duly held in said district for said purpose on April 1, 1919, and by, an order duly entered in the County Court of Cook County, Illinois, on to -wit, April 11, 1919, siad petition to dissolve bearing the general No. 42171 in said Court, and whereas by an amendment approved June 24, 1915 and in force July 1, 1915, to an Act -of the General Assembly of the State of Illinois entitled, "An Act to provide for the organization of park districts and the transfer of submerged lands to those bordering on navigable bodies of water", approved June 24, 1895 and in force July 1, 1895, the power is duly vested by operation c.f law in the members of the City Council of -the City of Evanston to levy taxes within the limits of said dissolved and discontinued the Evanston Northwest Park District for the pur.)o:.,e of paying its outstanding debts, obligations or liabilities and the necessary elTenses of closing up the business of such Park District. NOW, TIIE?EFORE the sum of Three Thousand One Hujdred and Seventy -Five Dcllars ($3,175.00) being the amount necessary to be collected from the tax levy for the year 1922 within the limits of the Evanston Northwest Park District, be and the same is hereby levied and assessed on all real and personal property lying within the limits of said dis- solzred and discontinued district subject to taxation according to the valuation of such property as the same is or she11 be assessed. for State and County purposes for, the year 1922 as follows: BONDED INDEBTEDNESS FUNDS. For the Principal of two bonds dated October 1, 191.2,, as heretofore levied by ordinance of The Evanston Northwest Park District, .adopted August 8, 1912, $ 1,000.00 For Principal of tijTo bonds dated April 1, 1916, 1,000.00 For interest on bonds dated October 1, 1912, as heretofore levied by ordinance of the Evanston Northwest Park. District, adopted August 8, 1912, 450.00 i For .interest on bonds dated July 15, 1915, as heretofore levied by ordinance of the Evanston Northwest Park District adopted April 8, 1915, 1 270.00 For .interest on bonds dated April 1, 1916, as heretofore levied by ordinance of the Evanston Northwest Park District adopted March 9, 1916, 315.00 $ 3,035.00 JWOUNTS DUE ON INISTALT21ENTS OF SPECIAL ASSES3.2,!ER1S. For flth installment of Special Assessment No. 632 in the County CSurt, Cook County, Illinois, for paving Colfax Street assessed against Lots 1 to 8 both inclusive and Lots. 19 and 20 in Block 4 in Ewing's Addition to Evanston, the property of the Evanston Northwest Park. District,. 140.00 3,175.00 Section 2. That the City Clerk of the City of Evanston, Illinois, be andhe is hereby directed to file with the County Clerk of Cook County, Illinois, within the time required = by law a copy of this, ordinance duly certifies by said City Clerk. Section 3. This ordinance shall be in force from and after its passage. � Adopted by the City Council of the City of Evanston on the 19th.day of Sept. A.A. 1922. Approved: Sept. 19th, 1922. John F. Hahn, H.P. Pears ons , City Clerk. Mayor. . -mow 170 AIT ORDINANCE LEVYING MUNICIPALL AND PUBLIC LIBIHARY TAXES IN THE CITY OF EVAli ST01 IN THE COUNTY OF COOK AND STATE OF ILLI NOI'" FOR THE FISCAL YEAR BEGITTNING JAINARY 1st., AND ENDING DECEMBER 31st, 1922. BE IT ORDAINED BY THE CITY COUNCIL OF TIC CITY OF EVAN3 T ON: Section 1. That the amounts of the appropriation to be raised by taxation for the corporate purposes of said city heretofore wade by said City Council durint the first quarter of the distal year beginning the first day of January, 1922, and embraced in Section One of the Annual Appropriation Bill or Ordinance of said City, adopted by the City Council on the 21st day of February, 1922, and approved by the Mayor of said City on the 24th day of February, 1922, and the said ap- propriation being more specifically set forth hereinafter, as well as the ?)urpose for which said appropriations were made, be and the same are hereby levied, to -wit: DEPARTIIMNT OF PUBLIC �dIQFFiS . For salary of commissioner of public works and city engineer at $466 2/3 per month, 5,600.00 For maintenance of motor c.ehicle of commissioner of public works and city engineer at $40 per month, 480.00 For salary of first assistant engineer at 6250 per month, 3,000.00 For salary of second assisstant engineer at $155 per month, 1,860.00 For salary of third assistant engineer at $120 per month, 1,440.00 For salary of draughtsman for 8 1/3 months at %1120 per month, 1,000.00 For salary of consulting; engineer at $325 per month for six. months, 1,950.00 For salary of clerk at $110 per month, 1,320.00 For salary of stenographer and clerk at $10D per month, 1,200.00 For pos-tage., stationery, map s , draught ing material and instruments and miscellaneous supplies, 700.00 For maintenance and supplies for two motor vehicles and for trading in one Ford touring car for new Ford car, 1,200.00 For deparlanent's share of garage overhead, 162.50 For freight, express and transportation, 60.00 For sidewalk approaches, 200.00 For special assessment blanks and forms, 450.00 Total appropriation, 20, 622.50 Which includes receipts estimated to be received from engineering services, 900.00 Also receipts estimated to be received from sewer permits, 1,000.00 Also receipts estimated to be received from water permits, . 1,700.00 Also recei-ots estimated to be received from pole and heating mains permits, 400.00 Also miscellaneous receipts estimated at, 100.00 Also receipts from grade fees, estimated at, � 150.00 Also amount to be transferred from the Sewer Dept.., 1,000.00 Also amount, to be transferred from the Water Department, 4,000.00 Also amount to be transferred from Small Parks Department, 1,000.00 Also amount to be transferred from Department of Buildings for Stenographic Services, 300.00 Add 5% for probable deficiency arising in the collection of this appropriation, 503.63 �10, Total amount to be raisec by taxation, 576.13 �1zt9i98 DEPARMEEST OF BUILDINGS 171 For salary of chief -of inspections at $225 per month, 2,700.00 And while acting as Building Commis- sioner an additional �75 per month, 900.00 For salary of zoning enforcing officer at $56 per -month, 600.00 For maintenance of motor vehicle of Building Commissioner at $40 per month, 480.00 For salary of sanitary inspector at $200 per month, 2,400.00 For salary of fire alarm and police telephone electrician at $175 per month, 2,100.00 For salary of electrical and building inspector at $175 per month, 2,100.00 For salary of permit clerk at $150 per month, 1,800.00 For department's share of salary of s ten ographer. , j time at $100 per month, 300.00 For extra labor- in connection vrith boiler, elevator, tuilding, smoke and miscellaneous inspections, 900.00 For maintenance and supplies for three motor vehicles at 1035 per month each 1,260.00 For postage, stationery and miscellaneous supplies, - 450.00 For freight, express and transportation, 250.00 For labor and material for maintenance of fire alarm telegraph system, 400.00 For labor and rrLaterial fur maintenance of .police telephone and flashlight system, 1 800.00 For maintaining and improving storage battery and switchboard, 200.00 For garage supe•rvisi on, three cars at $81.25 per year, 243.75 For neru Ford automobile, 500.00 Total appropriation, 18,383.75 Which includes estimated rec-eipts to be received from building permits, 5,000.00 Also receipts from electrical permits, inspections and registrations, estimated at, 5,000.00 Also receipts from plumbing and gas fitting permits and inspections, estimated at, 2,133.75 Also receipts from boiler, elevator, smoke and miscellaneous permits and inspections„ estimated at, 1,600.00 Also amount to be transferred from fire depa,rtxnent, for supervision labor and material for, maintain- ing fire alarm _telegraph system, 1,500.00 Also amount to be transferred from Police Department for supervision, labor and material for maintaining police telephone and flashlight system, 2,300.00 Also -amount to be transferred from Street Lighting for supervision of "traffic Signals" and "Davis and Main St-reet District Lighting", 250.00 Also amount to be transferred from Water Department for work of permit clerk, 600.00 Total appropriation, 18,383.75 1 SEWER . DEPARTIJENT . For salary of foreman at $160 per month For labor, For maintenance and supplies for three motor vehicles ,,:).nd tools, For department's share of garage overhead, For new material, . For transfer to Department of Public Works, Total appropriation, Which includes receipts estimated to be received from underground work done by the department, Add 5% for probable deficiency arising in the collection of this appropriation, Total amount to be raised by .L axation, STREET LIGHTING. For 450 overhead arcs at $62.50 per year (including cit ,'s portion of lighting Sheridan Place, For 170 underground arcs at $72.50 per year, For ornaa-,qental lighting Davis Street District, For ornamental lighting Main Street District, For light.-ng Safety Islands, For subway posts and signal lights, For ornamental lighting Fountain Square, For transfer to Department of Buildings for labor, Total appropriation, Which includes amount to be paid by Northwestern Elevated Railway Company for 1922 and last half of 1921, Also amount to be paid by Chicago & Northwestern Railway Company, Add 5% for probable deficiency arising in the collection of this appropriation, Total amount to be raised by taxation, 1,920.00 8,.253.00 1,500.00 243.75 800.00 1,000.00 13,716.75 ,350.00 668.34 28,125.00 12,325.00 400.00 150.00 400.00 775.00 400.00 250.00 42,825.00 1,200.00 1,652.50 1,998.62 t DEPARTIMINT OF STREETS For salary of commissioner at $325 per month, 3,900.00 For maintenance of motor vehicle of commissioner of -streets at $40 per month, 480.00 For salary of two foremen at $160 per month each, 3,840.00 For clerical help at $110 per month, 1,320.00 For salary of ba.rnman at $100 per month, 1,200.00 For salary of watchman at $90 -per month, 1,080.00 For labor, t 56,880.00 For.purchase and maintenance of horses harness, wagons, tools and general supplies and removing and burying dead animals, 13,000.00 For maintenance and repairs to motor trucks and automobiles, 9,000.00 For snow plowing and plows,- 500.00 For sidewalk repairs, 500.00 For purchase of new -equipment, 7,535.00 For maintenance, tools and equipment for garage, 2,000.00 Total appropriation, 101,235.00 Which includes amount. to be transferred from Public Works Department for gasoline and oil, 800.00 Also amount to be transferred from Water Department, gasoline and oil, 1,500.00 Also amount to be transferred from Small Parks Department, team hire, gasoline and oil, 1,000.00 $ 14,035.09 $p 41,971.12 �izi9i98 Also amount to be transferred from Sewer .-I 173 Depastriient, gasoline and oil, 400.00 Also amount to be transferred frora Health Department, gasoline and oil, 1,000.00 Also amount to be` transferred from Department of Building:, ,gasoline and' oil, 1,000.00 Also amount to be transferred from Police Department, gasoline and oil, 400.00 Also receipts fro' street permits, ` estimma ted at, 100.00 Also amount to be received from sale of four trucks, two automobiles, junk and rubber, estimated at, 800.00 Also amount to be received from repair- ing street openings, estimated at, 1,800.00 Also amount estimated to be received from Evanston Street Railway Company under contract with city, 8,000.00 Also amount to be transferred from Street and Bridge Repair Dept. 36,`660.00 Also amount to be transferred from Garbage Department, 7,650.00 Add 5J for probable deficiency arising in the collection of this appro- priation, 2,006.25 Total amount to be raised by taxation, 42,131.25 PUBLIC BUILDINGS CITY .RALL ` For salary of janitor at $100 per month 1,200.00 For general supplies, 180.00 For heating and incidentals, 1,500.00 For lighting -and inciaentals, 400.00 For general repairs and alterations, 1,000.00 For contingent expenses, 125.00 4,405.00 GROVE STREET STATION. For heating and incidentals, 700.00 For lighting and incidentals, 700.00 For general repairs, alterations and furnishings, 1,800.00 I+'IRE STATION NO. 2 For heating and incidentals, 500.00 For lighting and. incidentals, 150.00 For general repairs and a.1 terati ons, 1,600.00 2,250.00 FIRE STATION NO. 3 For heating and incidentals, 450.00 For lighting'and incidentals, 150.00 For general rwepai`rs and alteration:, 400.00 1,000.00 DEPARTMEHIAL BUILDINGS. For heating and incidentals, 1,000.00 For lighting and incidentals, 500.00 For general repairs and alterations, 1,500.00 For salary of janitor at $100 per month, 1,200.00 For supplies, 200.00 4,400:00 Total appropriation, 15,255.00 Add 5% for probable deficiency arising in the collection of this appropriation, 762.75 Total amount to be raised by taxation, $16,017.75 POLICE DEP; RT'h.r,ivT For salary of chief of police at $300 per imont`h, 3,600.00 For s� 'Lary of captain at $175 per month, 2,100.00 For salary of detective sergeant at $165 per month, l,`980..00 For salary of 6 desk and patrol sergeants: at '$160 per month each, ll,b20.00 174 For salary of 41-atrolmen at $150 per month each, $ 73,800.00 For salary of policewoman and matron at $150 per month, 1,800.00 For salary of 2 switchboard operators at $125 per month each, 3,000.00 For expenses and toll charges, 700.00 For extra, help, 125.00 For salary of juvenile officer at $90 per month, 1, 080.-00 For salary of janitor at 4590 per month, 1,080.00 For salary of merrb'e,-•s of censor board, 1,200.00 For secret service vaork, 500.00 For maintenance of automobiles and motorcycles, t 4,600.00 For stationery, pr;_nting and supplies, 800.00 For jail board, - 500.00 For ammunition for police tarF,-,;et practice, 300.00 For extra pay for officers who qualify in revolver pract-ice for 1922, 350.00 For 4 new motorcycles, 1,900.00 For office fixtures, 150.00 For service and supplies for maintaining police telephone and flashlight system, 2,300.00 Total. appropriation, 119,085.00 Which includes receipts estimated to be received from licenses, dog tax -and fines, less amount to be credited to police pension fund and firemen's pension fund, 15, 000.00 also amount estimated to be received frcm censored films, 1,300.00 Add 5% for probable deficiency arising in the collection of this appropriation, 5,139.25 Total amount to be raised by taxation, LEGAL EXPELS)ES For salary of corporation counsel at $300 per month, for all legal services ex- clusive of special assessment pro- ceedings, the 'compensation for which services shall be assessed as nart of the cost of said proceedings and paid on c onf irmati an thereof, as provided by law, 3,600.00 For salary of city attorney `at $75 per month, 900.00 For legal expenses not otherwise provided for, 150.00 Total a. propriation; 4,650.00 Which includes receipts estimated to be received from assessments'confirmed and on which fees have not yet been paid, 1 1,250.00 Add 5% for probable deficiency arising in the collection of this appropriation, 170.00 Total amount to be raised by taxation, HEALTH DEPARTIU] ITT For salary of health commissioner at $150 per month, 1,800.00 For additional services as required by law, 300.00 For salary of food and dairy inspector at $185 per month, 2,220.00 For salary of health inspector at $170 per month, 2,040.00 For salary of bact•erioIoCJst and chemist ` at $100 per month., 1,200.00 For salary of laboratory assistant at $110 per month, 1,320.00 For office supplies, 200.00 107,924.25 3,570.00 31 918 T 7 5 1 For laboratory chemicals and supplies, For care of smallpox patients, fumigating, vaccine virus, anti -toxin, maintaining ambulance and supplies, For maintenance of two motor vehicles, For department Is hsare of garage overhead, For food and dairy inspection, For board of examiners of `plumbers, For medical inspection of schools, For supervision of weights and measures, For Infant Welfare work, For Gasoline and oil (health Commsr.) 350.00 400.00 800.00 162.50 100.00 240.00 1,500.00 75.00 6,000.00 100.00 Total appropriation, 18,807.50 Which includes amount estimated to be received from receipts from laboratory work done by the de- partment 300.00 Also amount to be received from beard of exami-ners of plumbers, estimated at 400.00 Also amount to received from examina- tion of scales, estimated at 300.00 Also r eceipts to be received from registration of births and deaths, estimated at 400.00 Add 5% for probable deficiency arising in the collection of this appropriation, 870.38 Total amount to be raised by taxation, 18,277.88 CITY CLERK'S OFFICE For salary of city clerk at $150 per month, 1 1,800.00 For salary of clerk and stenographer at $100 per month, 1,2CO.00 For salary of messenger at $8.33 1/3 per month, 100.00 For blankk books, stationery and supplies, 200.00 For new record books necessary for the work of 1922, 50.00 Total . e,>>propriati on, 3,350.00 Add 5% for probable deficiency arising in the collection of this appropria- tion, 167.50 Total amount to be :.wised by taxation, 3,517.50 CITY COMPTROLLER'S OFFICE For salary of genera_ clerk and stenog- rapher ai, $200 per month, 2, 400.00 For salary of clerk and stenographer at $150 per month, 1,800.00 For blank books, stationery and supplies, 250.00 For purchase of Burroughs Adding Machine, 260.00 Total appropriation, 4,710.00 Which includes amount to be transferred from special assessments, estimated ar 120.00 Also amount to be received from Evaijston Street Railway Company for auditing, 500.00 Add 5% for probable deficiency arising in the collection of this appropriation, 204.50 Total amount to be` raised by taxation,' 4,294.50 CITY'COLLECTOR 1,10 SUPERIME11DEiiT OF SPECIAL ASSESSMENTS OFFICE. For salary of city`eollector and superintendent of special assessments at $300 per montY: 3,600.00 For salary of clerk and stenographer at $100 per month, 1,200.00 For salary of clerk: at $90 per month, 1,080.00 For postage, 1,000.00 For blank books, stationery and supplies, 550.00 Fo:; checking ownership book to date, 75.00 1 • qor additional help, 1,400.00 For burglary insurance, 10.00 Total appropriation, 8,915.00 Which includes receipts from all the asseso,nents Npread and confirmed,on which fees have not been paid, es- timated at 1,500.00 Also for sp ec ial lasses sment collections, estimated at- 1,700.00 Also amount for rebating assessments, estimated at, 100.00 Also amount to be transferred from the Water Fund 1,000.00 Add 5% for probahle deficiency arising in the collec cion of this appropriation, 230.75 Total amount to be raised by taxation, 4,845.75 PRINTING For printing; not otherwise provided for 1,322.00 Total appropriation, 1,322.00 Add 5% for probable deficiency arising in the collection of this appropriation 66.16 Total amount to be raised by taxation, 1,368.10 SALARIES OF CITY OFFICERS. For salary of Mayor at $333 1/3 per month, 4,000.00 For salary of treasurer at $50 per month, 600.00 For aldermen at $10 each and page at $2 per meeting, 3,408.00 Fbr.stenographer'at $5 per session, 120.00 Total appropriation, 8,128.00 Which includes interes on public funds estimated at- 3,500&00 Add 57 for probable deficiency arising in the collection of this appropriation, 231.40 Total at.iour_t to be raised by taxation, 4,859.40 CIVIL SERVICE COMIISSION For salary of three commissioners at $75 each 225.00 For' salary of chief examiner at $25 per month, 300.00 For expenses of the commission for clerk hire, printing, telephone, stationery and incic.ental expenses, 275.00 Total appropriations 800.00 Add 5% for probable deficiency arising in -the collection of this appropriation, 40.00 Total amount to be raised by taxation, 840.00 MISCELLANEOUS FUND For the payment of judges and clerks of election, election printing and rent of rooms for the municipal election to be held April 4, 1922, For -office help, supplies, °e te. for Treas,rer's Office, For salary of general clerk under comp- troller's direction; at �p100 per month For Workmen's Compensation and Employers Liability Insurance, 1,500.00 3,000.00 1,200.00 2,000.00 C _1% 1zt9jt98 For improvements to Fire Alarm telegraph and police telephone and flashlight systems, 4,800.00 For support of widows and orphans of sol- dier's and sailors as per requisitions of John A. Logan Post, 900.00 For the Evanston Historical Society, 50.00 For evanston Hospital Association, for services, 350.00 For St. Francis Hospital Association, for services, 350.00 For Visiting Nurse Association, for services, 150.00 For Evan ston Sa. ii ta.rium and Training School for services, 250.00 For zoning expenses, 500.00 For mayor's contingent fund, 600.00 For tax investigation and auditing books, ` 1, 200.00 For city's share of special assessments, 11800.00 Total appropriation, 18,650.00 0 Add 5% for probable deficiency arising in the collection of this appropriation, 932.50 Total amount to, be raised by taxation, —' 19,582.50 CONTINGENT FUND For contingent expenses not incl ded in appropriation to cover unforseen requirements, accidents, etc., 14,000eOO Total appropriation, 14,000.00 Add 5110 for probable deficiency arising in the collection of this appropriation 700.00 Total amount to� be raised by taxation, IIvTER.EST ACCOUNT For library site bonds, 164.00 For library building bonds, 300.00 For municipal building bonds, 1,600.00 For departmental building bonds, 720.00 For water works betterment bonds, 5,600.00 For lake shore improvement bonds, 1,250.00 For fire apparatus and equipment bonds, 750.00 Total appropriation, 10, 384.00 Add 57for probable deficiency arising in the collection of this appropriation, 519.20 Total amount to be raised by taxation, ` SINKING FUND For library sire bonds, 2,000.00 For departmental building bonds, 2,000.00 For vvrater works. betterment bonds, 5,000.00 For library building bonds, 2`500.00 For lake shore improvement bonds, 5:000.00 For fire apparatus and equipment bonds, 5,000.00 Total appropria,i on, 21, 500.00 Add 5% for probable deficiency arising in the collection of this appropriation, 1,075`.00 Total amount to be raised by ta---ation, S P E C I A L F U N D S PUBLIC LIBRARY For salaries of employes and sundry expenses, 43,200.00 Total appropriation, 43,200,00 Which includesamount estimated to be re- ceived from special tax of one and eight -tenths mills on the dollar for library purposes, as provided by lava, 43,200.00 Total appropriation, 43,200.00 14,700.00 10,903.20 22,575.00 177 C 178 FIREAUM I S PENSION FUND For payment of pensions and sundry expenses, 7,965.64 Total appropriation, 7,965.64 Which includes unexpended balance of 1921, 1,442.71 Also receipts estimated to be received from tax on -insurance premiums (2) , 1, 500.00, Also receipts estimated to be received from 1`0 of licenses, -100.00, Also recei t.s estimated. to be received from 1, of salaries, 500.0& Also amount, estimated to be received from special tax of tyro -tenths of a mill on, t1 e dollar f'or firemen's pension fund, as provided by law, 4,422.93 Total appropriation, 7,965.64 POLICE PENSION FTjJND For payment of pensions and sundry expenses, 14,055.72 t Total appropriation, 14,055.72 Which includes unexpended balance of 1921, 2,121.33 Also amount to be received from 101 of regular licenses, estimated at 800.00 Also amount estimated to be received from 3/4 of dog licenses, — 1,200.00 Also amount estimated to be received from 10`0 of regular fines, 800.00 Also amount est-imated to be received ' from 10% of automobile fines, 200.00 Also amount estimated to be received from 1% of salaries, 500.00 Also amount estimated to be received from interest cn bonds, 1,800.00 Also amount estimated to be received from special tax of three -tenths of a mill on the dollar for police pension fund, as provided by law, 6,634.39 Total appropriation.. 14,055.72 GARBAGE SYSTEA2 Fo-r department's share of superintendence and clerical help, 1,800.00 For labor, 15,330.00 For trasnfer to Department of Streets for use of horses, equipment, maintenance, supplies and -department's share of overhead expense, 5,850.00 For purchase of` equipment and maintenance, 7,600.78 For overdraft of 1921, t 905.39 Total° appropriation, 31,486.17 Which includes special garbage receipts estimated at, 2,000.00 Which includes also receipts estimated to be received from special tax of one and one-third mills on the dollar on all taxable property in the City of Evanston as provided by law, 29,486.17 Total appropriation, 31,486.17 STREET AND BRIDGE REPAIR DEPARTIMM FOR THE'TOWNSHIP OF THE CITY OF EVANSTON, For department's share of superintendence and clerical help, 5,160.00 For equipment and tools, 4,500.00 For replacement and repairs of bridges and maintaining' streets,, boulevards and highways, 43,894.57 For transfer to Department of Streets for use of horses, equipment, employes, supplies and department's share of overhead expense, 31,500.00 IZi9198 For over draft of 1921, f` For maintenance of three trucks, one automobile, one roller, .repairs, insurance, etc., For maintenance and repairs to streets, For department's share of municipal garage, Total appropriation, 6,959.13 4,000.00 23,519.13 400.00 119,932.83 Which includes receipts estimated to be received from wheel tax licenses, 28,000.00 Which includes also receipts estimated to be received from automobile fines, 2,,000.00 Also receipts estimated to be received from special tax of two and four - tenths mills on the dollar for street and bridge purposes and tax of sixteen and two-thirds cents on One Hundred Dollars of valuation to cover a con- tingency existing as decided by City Council, as provided by law, 89,932.00 Total appropriation, 119,932.83 SNIIALL PARKS For labor, teaming and incidentals, 12,518.60 For hose and supplies, 1,200.00 For athletic supplies, 500.00 For plants, trees, shrubs and vines, 500.00 F.or eater supply and -drainage, 250.00 For upkeep and improvement of buildings, 300.00 For fencing .grounds, and walks and drives, 100.00 For lighting, heating, telephone and incidentals, 400.00 For maintenance and repairs to automobile, including team hire and feed, 1,200.00 For department's share of garage overhead, 81.25 For insurance, 15.92 For overdraft of 1921, 1,913.49 For small park's share of -p eci al assess- ments, 1,330.00 For patrolling and cleaning beaches, 900.00 For purchase of land for small park and bathing beach purposes, 4,000.00 For shall park's share of expense of Public Works Dep artrient, 1,000.00 For construction of fences for lake shore protection, 5,000.00 For creation of sinking fund for payment of mortgages due in 1922, 12,000.00 For interest on indebtedness on park property. and taxes, 1,020.00 Total appropriation, 44,229.26 Maich includes amount estimated to be received from special tax of two mills on the dollar for park pur- poses, as provided by law, 44,229.26 t TOtal appropriation, 44,229.26 AMOUNTS TO BE RAISED BY TAXATION General fund, 308,531.22 Bonds and Interest, 33,478.20 Special Funds, 217,905.58 Total by taxation, 559,915.00 That .this amount of Five Hundred and fifty nine thousand, nine hundred and fifteen hundredths Dollars ($559,915.00) having been ascertained by said City Council to be the mount to be raised by taxation and to be collected from the tax levy of said fiscal year be and the same is hereby levied and assessed upon the real and personal property subject to taxation within the said City of Evanstjn, in the County of Cook and State of Illinois, as the same is ascertained and equalized for State and County purposes for the current year, said tax so levied being for the current fiscal year of said city. 1 r) 9 _jd 17 III SECTIOiT 2. , That the sum of money.aletvied by Section One of this ordinance shall be applied as herein set forth to the payment of the -particular debts and appropriations mentioned, and when collected ana paid to the City Treasurer,- shall be disbursed by him for- the yaayment of :said debts and appropriations according to their respective amounts as 'itemized in said appropriation bill. All moneys levied under this ordinance for library purposes when maid to said City Treasurer shall be placed by him to the credit of the Library Fund of Evanston Public Library, and shall not be disbursed for any other, purpose . Section 3. That the City Clerk shall make and file with the County Clerk of said County of Cook. a duly certified copu of this ordinance, and -that he shall also certify to the said County Clerk that the amount levied and assessed by Section One of this Ordinance is required by said City to be levied by taxation as aforesaid and extended upon the appropriate tax books for the fiscal year beginning January 1st, 1922 and ending December 31st, 1.922. Section 4. This ordnance shall be in fu)_]_ force and effect from and after its passage and approval. Adopted by the City Council of treCity of Evanston on ,the 19th day of September A.D. 1922. Approved: Sept. 19, 1922. John F. Hahn, H.P. Pearsons, City Clerk. Mayor. RECO18t, NDAT ION, ES,C IhUTE AND ORDINANCE. REG 112,IENDATION. BY BOARD OF LOCAL ILPROVMa''TT`^S. , To the Mayor and Alderman of the City of Evanston in the City Council Assembled: , We herewith submit an ordinance providing that the roadway of Forestview Road, extending from a point ten (10) feet south of the north lot line of Payne Street to the south lot line of Colfax Street, also the roadway.of intersecting street and alleys lying within said portion of said Forestview Road and not included in the roadway thereof, in the City,of Evanston, County of Cook, State of Illinois, be improved by grading, curbing with a Portland Cement Concrete Curb, paving with a bituminous macadam pave�,ent laid on a Portland Cement Concrete base or foundation, adjusting catchbasins , manholes, valve chambers and macs:darn paving adjoining and connecting with the pro- T)osed i.m;)roverent; tggether with an estimate of the cost of said improvement and rec cmmend the passage of said ordinance and the making of the i_,prove?nent c, nteri.)lated there-n. Respectfully submitted, H.P. Pearsons, WF ,q- Blanchard, Hal W. Smith. Board of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, . Illinois. October 17th, J922. EST M` TE OF ENGIN 'EA OF BOARD OF LOCAL IMPROVE*IE-ITTS . To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Panston having adopted a resolution that the roadway of Forestview Road, extending from a point ten (10) feet south of the north lot line of Payne Street to the south lot line of Colfa I Street, also the road- way of intersecting street and alleys lying within said portion of said Fprestview Road and not 'included in the roadway thereof, in tzt9198 the City of Evanston, County of Cook, State of Illinois, be 1O1 improved by grading, curbing with a Portland Cement Concrete Curb, paving with a bituminous nn.cadam pavement laid on a Portland Cement Concrete base or foundations, adjusting catch basins, manholes, valve chambers --md macadam paving adjo n:ing and con- necting with the proy)osed improvement; and :;resented to the City Council of the City of Evanston a recommendation that such improvement be made, .I hereby submit an estimate of the cost of such improvement as described in said resolution including labor, mterial and lawful expenses attending the proceedi :.ngs for making said improvement and the cost of making and collecting the assess- ment, ac provided by law, viz: ES T IMTE OF CC: ST 1387 cu. yds. of grading @ $1.60 per ca yd. 2,219.20 3400 lin. ft. of Portland Cerient Concrete Curb laid complete in p11-ce @ $1.25 per !in. ft. 4,250.00 4400 sq. yds. of bituminous macadam paving laid complete i n p)-ace @ $1. 40 per sq. yd. 6, 160.00 4400 sq. yds. of Portla.rd Cement Concrete base or foundation laid complete in place O $1.80 per sq. yd. 71 920.00 14 catch basins adjusted to grade @ $12.00 each 168.00 7 manholes adjusted to grade at $12.00 each 84.00 2 valve chambers adjusted to grade ® $12.00 each 24.00 60 sq. yds. c f macadam paving adjusted to grade @ $1.20 per sq . yd. 72.00 For lawful expenses attendinv; the proceedings for 'ra,l:ing said improvement and the cost of making and collecting the assessment therefor, not to exceed six per centum -(6%) of the above, to -wit: $20 , 897 .20 . . 1,253.83 Total- 6 22,151.03 And I hereby certify that in my opinion the above estimate dces not exceed the probable cost of the above proposed improve- ment and the lawful expenses attending the same. Whi. Blanchard, Engineer of the Board of Local Im- prover.erts of the City of Evanston. Dated, Evanston, Illinois. October 17th, 1922. AN ORDINANCE Providing that the roadway of Forestview_ Road, extending from a point ten (10) feet south of thenorth lot line of Payne Street to the south l-ot line of Colfax Street, also the roadway of in- tersecting street and alleys lying within said portion of said Forestview Road and not included in the roadway thereof, in the City 6f Evanston, County of Cook, State of Illinois, be improved by.grading, .curbing.with a Portland Cement Concrete Curb, paving with a bituminous macadam pavement laid on a Portland Cement Con- crete base or foundation, adjusting catch basins, manholes,valve y chambers and macadam paving adjoining and connecting with the proposed improvement. BE- IT ORDAINED BY "CIE CI`iY COMMIL OF THE C!TY OF EVA-STON: SECTION 1. That a local improvement shoal be made within the City of Evanstcn, County of Cook, State of Illinois, the nature, character, locality and deocription of which local improvement is as.follows, to -wit:. T4at the roadway of Forestview Road, extending from a point ten (10) feet south- of the north lot line of Pa;;gze Street to the south lot line of Colfax Street, also the roadway of intersecting street and alleys lying; viitl-_in said ,)ortion of said Forestview Road and not included in.the roadway thereof, in theCity of Evanston, County of Cook, State of Illinois, be and the sane are hereby ordered improved as follows: 182 LOCATION OF ROADWAYS The center line of the roadways herein provided to be paved shall coincide with the center _line of the respective streets and alleys, within which said roadways are included. WIDTH OF ROADWAYS. The width of the roadways herein provided to be paved shall be as follows, measured in f eet from back to back of the curb hereinafter specified and at right angles to the center line of the respective street or alley, as the case may be, to -wit: Roadway of Colfax. Street : At ten (10) feet south of thenorth li ne of Pay'_he St.. 24 feet At the south line of Colfax Street. 24 feet Roadway of Grant Street: At the east line of Forestview Road 24 feet At the west line of Forestview Road 24 feet Roadway of intersecting alley one hundred fifty (150) feet south of Colfax Street: • At the east line of Forestview Road 16 feet At the west line of Forestview Road 16 feet The width of roadway at intermediate points shall be respectively proportional to the foregoing. GRADE . OF . RU DWAY 1TD . CURB The grade of the roadways herein provided to be paved, when finished and the grade of the top of the cirb hereinafter specified, when completed and set in place, are hereby estab- lished as follows, measured in feet and decimal parts of a foot above the datum plane of the City of Evanston, to -wit: Crown Gutter Top of Transverse Section of Roadway line line curb Forestview Road: At the south line of Col_f,)x St. .. At a point cne hundred (166) feet south cf the south line of Colfa;; St. At a point one hundred fifty-eight. (158) feet south of the south line of Colfax Street. At a point two hundred eighty-seven (287) feet south of the south line of Colfax Street. At a point three hundred sixty- seven (367) south of the south line of Colfax Street. At a,point forty hundred ninety- one (491) feet south of the south line c.f Colfax Street At a point twenty-one (21) feet south of the north line of Grant Street At a point twenty-one (21) feet north of the south line of Grant Street At a point sixty (60) feet south of the south line of Grant Street At a:point one hundred forty-six (146) feet south of the south line of Grant Street. At a point five hundred twenty-five (525) feet north of the north line of Payne Street At a point four hundred ten (410) feet north of the north line of Payne Street. At a point two hundred eighty (280) feet north of the north line of Payne Street. 27.15 26.70 26.95 26.80 26..2.0 26.80 26.95 26.50 26.75 26.55 25.80 26.55 26.65 26.20 26.45 26.30 25.55 26.30 26.45 26.00 26.25 26.45 26.00 26.25 26.10 25.35 26.10 26.25 25.80 26.05 26.00 25..25 26.00 26.25 25.80 26.05 25.85 25.15 25.85 13 198 Transverse Seoti tin of Roadway Forestview Road: At a point two hundred. twelve (212) feet north of the north line of Payne Street At a point seventy-two (72) feet north of the north line of Payne Street. At a point. ten (10) feet south of the north line of Payne Street Grant Street: At the east line of Forestview Road At the wrest line of Forestview Road Crown Gutter line line 25.95 25.50 25.55 24.80 25.75 25..30 26.60 26.15 26.60 26.15 Top of curb 10 25.75 25.55 25.55 26.40 26.40 Alley one hundred fifty (150) feet south of the south line of Colfax Street: At the east line of Forestview Rd. 27.45 27.00 27.25 At the crest line of Forestview Rd. 27.45 27.00 27.25 The grade of the crown line, gutter line and top of curb at intermediate points shall be respectively proportional to the foregoing. The datum plane hereinafter mentioned is the plane of low water mark of Lake Michigan in the year A. D., 1847, as established by the Trustees of the Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the north-west corner of Davis Street and Sherman Avenue, in said City of Evanston. The crown line hereinbefore mentioned shall be identical with the center line of the respective road- ways when completed. The gutter line hereinbefore mentioned shall be identical with the line where the surface of the road- ways w4en completed touches the face of the curbing on both sides of the respective roadways. The surface of the roadways herein provided to be paved when completed shall conform to the arc of a circle passing through the respective crown and gutter lines, and shall be true and symmetrical. GRADING Prior to laying down the pavement thereon, the roadways specified to be paved shall be cleaned in a thorough and workmanlike manner of all debris and rubbish, such as deteriorated pavements, crossings, box drains, culverts, stumps'etc. The sub -grade shall be prepared by excavating the soil, or filling thereupon with other and suitable- soil to such depths and shapes as will insure the finished pavement being at the grade established therefor. Spongy earth that is unfit to be left in the sub -grade shall be removed by the con- tractor without extra charge. The sub -grade shall be rolled with a suitable self-propelling roller or flooded with water, or both as may be ,found necessary and practicable to thoroughly compact same. Any depressions that may appear as the rolling or flooding of the sub -grade progresses shall be filled upon at the surface with suitable soil and thoroughly com- pacted as before specified. i J CONCRETE. CURB A concrete curb shall be constructed on both sides of the respective roadways herein provided to be paved. Said curb shall consist of a mixture, by volume, of one part of Portland cement, two parts of sand and four parts of crushed gravel or stone. Except that the top and exposed roadway face of the curb shall be surfaced to a depth of one-half inch with a mortar composed of two parts of Portland cement and three parts of clean, sharp sand of the sizes and quality hereinafter specified for the sand to be used in making this curb. The crushed gravel or stone specified for the body of the curb shall be clean, hard, free from dust, loam, vegetable or other deleterious matter, and shall show sharp edged cubical fracturing. This crushed gravel or stone shall be of variable sizes, grading from a maximum dimension of one inch down to a minimum of a I one-fourth inch, and so proportioned that the particles capable of passing through screen of three -fourths inch mesh will fill the voids in the particles retained on such size screen, but without more than ten per cent excess of the smaller particles. 1 The sand specified for the curb shall be free from clay, loam, vegetable or other deleterious matter. The grain shall be angular, and shall range in size from one -quarter inch down to the finest, but not more than 3 per cent shall pass through a seive having (100) one hundred meshes per lineal inch. The sand shall be of such quality that mortar composed of one part of the cement hereinbefore specified and three parts of the sand, by weight, when made into briquetts, will develop a tensile strength at least equal to the strength of a_ mortar of the same consistency and proportions made with the same cement and Standard Ottawa sand. The Portland cement specified for the curb shall be of such quality that representative samples collected form the shipments made for the job shall be capable of passing the tests for fineness, soundness, initial setting, and tensile strength hereinafter set forth for Portland cement. , F'"_ - FRE The sand and crushed gravel or stone shall be clean when delivered on the job and shall be kept clean until used. In no case shall the sand and crushed gravel or stone when used, contain frost or lumps of froz- en matter. Forms shall be used in constructing the curb. The forms shall be sound, free from warp, and of suffici- ent strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established lines and grades. Wooden forms shall be thoroughly wetted and metal forms shall be oiled be- fore concrete is deposited against them. All mortar and dirt shall be removed from forms that have pre- viously been used. The ingredients specified for the body of the curb shall be mixed in a batch machine mixer of a type that will insure a uniform mixture and product. Clean water, free from oil, acid, alkali, or vegetable matter shall be admitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the crushed gravel or stone from the mortar. Provided, that on such portions of the work as it may be imprac- ticable to use the machine mixer, thorough and efficient hand mixing will be allowed. The equipment used, if any, for hand mixing shall be as specified for mixing the surfacing mortar. The ingredients specified for the mortar to be used in surfacing the top and exposed roadway face of the curb shall be mixed on a movable, tight iron platform, of ample size to accommodate the manipulations specified, without getting the ingredients off the platform or mixed with dirt. The Portland cement and sand specified for surfacing portions of the curb shall be thoroughly mixed on the platform with hoes or shovels, and until the color becomes uniform, after which sufficient hater, of the quality hereinbefore required, shall be gently added, while the mixing continues, to produce a stiff and homogeneous mortar. The concrete and the finishing mortar after being prepared as specified shall be promptly deposited and compacted in the forms, in layers not exceeding six inches in depth. The back of the curb shall be worked with a spade to secure a well filled surface. The front upper edge of the curb shall be rounded to a radius of one and one -Half inches in such manner that the planes of the top and roadway face of the curb will be tan- gent to the curve described by said radius. As soon as the cement has sufficiently set, the forms shall be re- moved from the face of the curb; and the face mortar shall be promptly troweled down hard and smooth, drawing the cement from the crushed gravel or stone as little as possible. The gloss shall be removed with a wet brush. The curb shall be constructed in sections not less than four feet nor more than six feet in length. In con- structing the curb, all templates used to form the sections shall be kept perpendicular to the top of the curb. All joints shall be neatly tool finished. The joint marking shall correspond to the joint made by the tem- plates. The curb shall be twenty-four inches in depth, and the thickness shall vary uniformly from six inches at the top to eight inches at the bottom of the curb. The curb shall be built in such manner that the road- way face will be vertical; that the t op will be at the grade hereinbefore established; and that the back of the curb, at the top thereof shall be on the lines hereinbefore established. The curb at intersecting streets and alleys shall be constructed to true curves tangent to the intersecting curb lines proper. The radius of the curve to which the back of the curb shall conform shall be ten feet for intersecting street and six feet for intersecting alley curb lines. Except as above specified, for intersecting street and alley curb lines, the curb shall be constructed paralleled to the center line of the respective road- ways herein provided to be paved. The curb shall be constructed at such distances from the center line of the roadways, herein provided to be paved, as will give the respective width of roadways hereinbefore speci- fied and established, when measured from back to back of curb in the manner and on the lines hereinbefore set forth. Trenches shall be excavated to sufficient width and depth to receive the curb and necessary moulding frames. Wherever. other than sandy soil is encountered the curb trenches shall be excavated to a depth of six inches below the bottom of the curb and shall be re -filled to such depth with sand or cinders. The sand or cinders shall be compacted with water or by hand tampers. The frames shall be securely fastened in place and shall be accurately brought to line and grade before they are filled with concrete. The grade and line to which the frames are to be set shall be such as is necessary to insure the finished curb being true to the lines and grades hereinbefore established therefor. PORTLAND CEMENT CONCRETE FOUNDATION Upon the sub -grade prepared as hereinbefore specified, shall be constructed a Portland cement concrete base or foundation, five (5) inches thick. The concrete shall be composed by volume, of one (1) part of Portland cement; three (3) parts of clean, hard grained, and sharp sand; and five (5) parts of clean, hard limestone or gravel broken or graded so as to yield a range of sizes (in longest dimension) from two (2) inches down to one-half (1-2) inch, and so proportioned as to produce a maximum number and minimum volume of interstices in the aggregate. The concrete shall be prepared by mixing the cement, sand and stone or gravel in an approved batch mixer with sufficient clean water and mixing sufficiently to produce a plasticity best suited to the condi- tions of weather and soil. The concrete mixed as above specified, shall be promptly spread on the surface of the sub -grade to the required thickness, and to such shape and grade as will insure the upper surface of the foundation after be- ing thoroughly compacted by rolling or tamping, being parallel with and three (3) inches below the grade hereinbefore specified for the finished roadway. The upper surface of the foundation shall not be troweled smooth but shall be left moderately rough to grip the bituminous macadam pavement specified to be laid thereon. 185 BITUMINOUS MACADAM PAVEMENT Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard, broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of three (3) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and- the layer thereof is dry, there shall be evenly applied to the limestone ( at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one and three quarters (1 3-4) gallons thereof being evenly spread on and used in each and every square yard of the roadway, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size rang- ing from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diam- eter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screen- ings the roadway so covered, shall be given a thorough rolling with a roller of the weight and type herein - before named. This rolling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the roadway shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be evenly applied to the surface of the pavement a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficiert in quantity and so applied and spread as to insure not less than three quarters (3-4) gallon thereof being evenly spread and used on each and every square yard of road- way. Immediately after the second app ication of asphaltic cement is made and spread and progressing therewith there shall be evenly spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximurr dimension of three -fourths inch to a minimum dimension of one - eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of the roadway. A final rolling of the roadway shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the roadwa; is thoroughly compacted, and brought to a surface, free from de- pressions and true to form and grade. Any and all depressions developing luring progress of the rolling, required in process of constructing the pavement herein provided to be built, ;hall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The gutters shall be kept trimmed to the required thickness and grade as the work progresses. The cubic yardage of stone, herein - equired, shall be verified by measurement of volume thereof in cars, or other conveyances, transporting flame to said City, and prior to initial unloading, and shall be fur- ther verified by measured length of dumFs and height of grade marks on the work. The stone shall be hauled on to the work in boxes of uniforrk size and contents and of such shape as to enable.an easy and exact determination of the volume contained thtrein to be made on the site. The asphaltic cement used in the im )rovement herein provided to be made shall be of such quality that representative samples collected from shil ments thereof shall be capable of meeting the following require- ments and of passing the following tests to -wit: (1). The asphaltic cement shall con; ist of not less than sixty-five per cent refined, solid natural as- phalt and a flux to be tested with and proven, the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so prepared for use as to best adapted to the climatic and traffic conditions of the roadway on which it is to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit un- der 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various Hydrocarbons composing it shall be pres- ent in homogeneous solution, no granular constituent being present. (5). It must not flash below 360 degrees Fahrenheit when tested in a New York state closed oil tester. / (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95%. (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98 /%a shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in 75 degrees Baume petroleum naptha, at the air temperature to the extent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. MANHOLES TO BE ADJUSTED AND BROUGHT TO GRADE The 7 brick manholes now located within the space herein provided to be paved, and which are already equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said manholes as may be necessary to bring the covers of the manholes to the height above specified and also to insure a safe and serviceable roadway. In malting said adjustment, hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one- half (1/) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. VALVE CHAMBERS TO BE ADJUSTED AND BROUGHT TO GRADE The 2 brick valve chambers now located within the space herein provided to be paved, and which are already equipped with cast iron covers, shall have their. covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said valve chambers as may be necessary to bring the covers to the height above specified, and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a mortar, composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 1-2) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. CATCH BASINS TO BE ADJUSTED AND BROUGHT TO GRADE The 14 brick catch basins now located along the sides of the roadway or roadways, as the case may be, herein provided to be paved, shall have their covers raised or lowered as the case may be in such manner as to bring the tops thereof to the surface of the adjacent ground. Such adjustments as may be necessary shall be made to the walls of said catch -basins with hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1%) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. Said covers shall be imbedded in mortar of the quality hereinbefore specified in adjusting said walls. Said catch -basins shall be connected to the curbs by means of sewer pipes of the kind, size and quality and laid in the manner hereinbefore specified for pipe used in constructing surface drainage sewers. Openings shall be made in curbs at points of said connections in such manner as to permit free and un- interrupted passage of storm waters, from the surface of the pavement hereinbefore specified, to said basins. ADJUSTIl E11 OF PRESENT MAC OAM PAVING. 18, 7 The present macadam paving where the same adjoins the proposed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and quality composing said macadam paving and having been thoroughly compacted it shall form a base or founda- tion for a bituminous macadam pavement to be placed thereon. The up_0er surface of said base or foundation when completed shall be two (2) inches below the finished grade of the proposed improve- ment where same adjoins said macadam paving. Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths -inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of two (2) inches thereof being; spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be applied to the limestone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one (1) gallon thereof being evdnly spread on and used in each and every square yard of paving, in ad.d.ition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement-hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size ranging from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diameter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screenings the paving so covered, shall be given a thorough rolling with a roller cf the weight and type hereinbefore named. This rolling shall continue until the screenings are driven into, and. thor- oughly bonded with, the layer of stone to which same is applied. The surface of the paving shall next be thoroughly cle-aned of all loose stone, dirt,leaves or other foreign material thereon, After being so cleaned there shall be applied to the surface a second application of asphaltic cement of the sarle kind and quality as that used in the first application. This second application :hall be sufficient in quantity and so applied and spread, as to :insure not less than three-quarters (3/n) gallon t?-.:erecf being evenly spread and used on each and every square yard of paving. Immediately after the second a,-,,plica- tion of asphaltic cement is made and spread (and progressing therewith). there shall be spread on the surface of the roa&-iay -o treated, clean, dry, hard granite chips, of a size ranging fropm a maximum dimension of three -fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of paving. A final rolling of the paving shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall c ontinue until the surface of the pavement is thoroughly compacted, and brought to a surface free from depressions and true to form and grade. I1P_ �V© Any and all depressions developing during progress of the rolling, required in process of constructing the pave- ment shall be filled, as the rolling continues, with the same resuective kind of stone as that on which the roller is operating. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the follmiing requirements and of passing the following testsm to -wit: (1) The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural asphalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pave- ments, and shall possess such chemical and physical properties and be so prepared for use as to best adapt it to the climatic and traffic conditions of the roadway on which it is to be used. (2) Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3) It must have a penetration between 5 and 10 milli- meters at 77 degrees Fahrenheit under 100 grams fro five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 grams for one minute. (4) It shall be practically free from water, deccripo- sition products, coke or inert free carbon, coal tar or any of its products, or ether injurious matters, and the various hydrocarbons composing it shall be present in homogeneous solution, no granular constituent being present. , (5) It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6) 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a c� lindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shell not be less than one-half that tested as above described. (7) It shall be soluble in chemically pure carbon disulphide at air tff-i'iperature to tie extent of at least 95%. (8) Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98-21fo shall be soluble in cold carbon tetrachloride. (9) The bitumen of the cement shall be soluble in petroleum naptha, at the air temperature to the extent of not less than 72 per cent. (10) Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. • MISCELLANEOUS SPECIFICATIONS, • N `_-BRICK - All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and •cleansand shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per •linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit: Fineness. The cement shall be so ground that 92 % will pass through a standard sieve, having 10,000 meshes and 75% will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain -in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7. days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the .period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on. the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The tile ,pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it, unfit for the service or load that would be imposed upon it from within or without. Said Spipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an t.,inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. 190 All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance. shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section•2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of twelve hundred fifty—three and eighty—three hundredths dollars ($ 1,253.83 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making,' levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of twelve hundred fifty—three and eighty—three hundredths dollars ($ 1,253.83 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into ten installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance.and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 17th day of October A.D. 1922. Approved: Oct. 18th, 1922. John F. Hahn, H.P. Pearsons, City Clerk Play o r . W­fq it 0"s- RECOVICITDATION, ES"'IM(1iTE AND ORDINANCE RECOANMENDATI ON BY BOARD OF LOCAL IYPRO17ET ETTTS To the Vayor'and Aldeirneri of theCity 6f Evanston in the City Council Assenbled: We herewith submit an ordinance providing that the"roadway Of Colfax"Street from the vest curb line of Ridge Avenue to th6 east curb line of Bryant Avenue, also the roadway of Bryant Avenu6 from the north lot line of Grant Street to the southeasterly Right -of -Way line of The Sanitary District of Chicago, also the roadways of intersecting alleys lying within said portion of said Bryant Avenue and said Colfax Street and.not included in the roadways thereof, in the City of Evanston, County of Cook, State of Illinois, be irproved by grading, curbing with a Portland Cement Concrete curb, paving; �:aith a bituminous mzcada pavement laid on a Portland Cement Concrete base or foundation, constructing catch basins, catch basin connections to surface drainage sewer, adjusting catch basins, manholes, valve chambers and brick paving adjoining and connecting with the proposed im- provement; together with an estimate of the cost of said im- provement'and recommend the passage of said ordinance and the making of the improvement contemplated therein. Resp--ctfully submitted, H.P. Pea.rsons, Wt. Blanchard, Hal W . Smith , Board of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, Illinois. October 17th, 1922. ESTIW!TE OF ENGINEER OF BOARD OF LOGE., IMPROVZIRYITS t To the Mayor and Alden,ien of theCity of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that the roadway of Colfax Street from the .vest curb line of Ridge Avenue to the east curb line of Bryant Avenue, also the roadway of Bryant Avenue from the north lot line of Grant Street to the southeasterly Right of Way line bf The Sanitary District of Chicago, also the` roadways of inter- secting alleys lying within said portion of said Bryant Avenue and said Colfax Street and not included in the roadways thereof in the City of Evanston, County -of Cook, State of Illinois, be improved by grading, curbing with a Portland Cement Concrete curb, paving with a bituminous macadam pavement laid on a Portland Cement Concrete base or foundation, constructing catch basins, catch basin connections to surface drainage sewer, adjusting catch basins, manholes, valve chambers and brick paving adjoining and connecting with the proposed improvement; and presented to the City Council of the City of Evanston, a recommendation that such improvement be made, I herewith submit an estimate of the cost of such improvement, as described in said resolution, including.labor, mm%terial and lev✓ful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment, as provided by law, viz: ESTIMATE OF COST 1600 Cu. yds. of grading @ $1.60 per cu. yd. $2, 560.00 3150 Lin, ft. of Portland Cement Concrete curb laid complete in place ® $1.25 per lin.ft. 3,937.50 4300 Sq. yds. of bituminous macadam paving laid complete in place ® $1.40 per sq. yd. . 6,020.00 4300 Sq. yds. of Portland Cement Concrete base or foundation laid complete in place ® $1.80 per sq. yd. 7,740.00 192 7 Brick catch basins including cast iron covers, plank bottoms, excavation and back filling c arplete in place @ $80.00 each . . $ 560.00 90 Lin. fr. of catch basin connections to surface drainage sewer, averarre depth of cut four (4) feet including trenching and back filling, laid complete in place @ $1.00 per lin. ft. 90,.00 4 Catch basins adjusted to grade ® $12.00 each 48.00 6 Manholes adjusted to grade ® $12. 00 each . 72.00 2 Valve chambers adjusted to grade @ $12.00 each . 24.00 80 Sq. yds. of brick paving adjusted Cgs $1.20 per sq.yd. 96.00 For lawful expenses attending the proceediri;s for making said improvement and the cost of making and collecting the assessment therefor, not to exceed six per centum (6%) of the above, to -writ: $21,147.50 1,268.85 Total 22, 416.35 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improvement and the 1p.wful expenses attending the same. Wm. Blanchard, Engineer of the Board of Local Im- provements of the City of Evanston. Dated, Evanston, Illinois. October 17th, 1922. AN ORD =ANCE Providing . that the roadway of Colfax Street from the wrest curb line of Ridge Avenue to the east curb line of Bryant Avenue, also the roadway of Bryant Avenue from the riortri lot line of Grant Street to the southeasterly Right of Way of The Sanitary District of Chicago, also the roadways of intersecting alleys lying within said portion of said Bryant Avenue and said Colfax Street end not included in the roadways thereof in theCity of Evanston, County of Cook, State of Illinois, be improved by grading, curbing with a Portland Cement Concrete curb, paving with a bituminous macadam pavement' laid on a .Portland Cement Concrete base or foundation, constructing catch basins, catch basin connections to surface drainage sewer, adjusting catch basins,' manholes, valve chambers and brick paving adjoining and connecting with the proposed improvement. BE IT ORDAIXED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvement shall be' ru de within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local improvement is as follows, to -wit: That the roadway of Colfax Street from the west curb .line of Ridge Avenue to'the east curb line of Bryant. Avenue, also the roadway of Bryant Avenue from the north lot line of Grant Street to the southeasterly Right of Way line of The Sanitary District of Chicago, also the roadways of intersecting alleys lying within said portion of said Bryant Avenue and said Colfax Street and not included in the roadways thereof in the City of Evanston, County of Cook, State of Illinois, be and the same are hereby ordered improved as follows: LOCATION OF ROADWAYS The center line of the roadways herein provided to be paved shall coincide with the center line of the respective streets and alleys within vrnich said roadways are included. WIDTH OF, ROADWAYS The width of tie roadways herein provided to be paved shall be as follows, measured in feet'froxn back to back of the curb hereinafter specified and at right angles to the center line of the respective street : or alley, as the case may be, to -writ: 19 w Roadway of Colfax Street: At the wrest curb line of Ridge Avenue 24 feet At the east curb line of Bryant Avenue 24 feet Roadway of Bryant Avenue: At the north line of Grant Street 24 feet At the southeasterly Right of Way line of the Sanitary District of Chicago 24 feet Roadway of Intersecting Alley one hundred forty* (140) feet `east of Bryant Avenue: At the south line of Colfax Street 16 feet At the north line of Colfax Street 16 feet Roadway of Intersecting_Alley one hundred fifty (150) feet west of Ridge Avenue At the south line of Colfax Street 16 feet At the north line of Colfax Street 16 feet Roadway of Intersecting Alley Vio hundred thirty- one -and sixty-seven hundredths (231.67) feet south of Colfax Street: At the east line of Bryant Avenue 20 feet At the wrest line of Bryant,Avenue 20 feet. The width of roadway at intermediate points shall be respectively proportional to the foregoing. GRADE OF ROADWAY AND CURB The grade of the road--.iays herein provided to be paved, when finished, and the grade of the top of the curb hereinafter specified, When completed and set in place, are hereby established as follows, measured in feet and decimal parts of a foot above the datum plane of the City of Evanston; to -wit: Crown Gutter Top of Transverse Section_ of Roadway. line line curb Colfax Street: 'At the west curb line of Ridge Avenue 35.00 At the west lane of Ridge Avenue 35.00 At a -point seven hundred forty-six (746) feet east of the east line of Bryant Avenue 34.55 At a point seven hundred twenty-six (726 Y feet .east of the east line of Bryant Avenue 33.90 At a point- seven hunt red six (706) feet east of -the east line of Bryant Avenue32.90 At a oint six hundred eighty-six - M6) feet east of the east line of Bryant Avenue 31.60 At a point six hundred sixty-six (666) feet east of the east line of Bryant Avenue 30.10 At a point six hundred forty-six (646) feet east of the east line of Bryant Avenue 28.60 At a point six hundred twenty-six (626) feet east of the east line of Bryant Avenue 27.15 At a point six hundred six (606) feet east of the east line of Bryant Avenue 25.80 At a point five hundred eighty-six. (586) feet east of the east line of Bryant Avenue 24.55 At a point five hundred sixty-six (566) feet east of the east line of Bryant Avenue 23.50 At a point five hundred fcrty-six (546) feet east of the east line of Bryant Avenue 22.50 At a point fivd'hundred twenty-six (526) feet east of the east line of Bryant Avenue 21.60 At a point five hundred six (506) feet east of the east line of Bryant Av. 21.00 34.25 35.00 34.50 35.00 34.05 34.55 33.40 33.90 32.48 32.90 31.18 31.60 29.68 30.10 28.38 28.60 26.73 27.15 25.38 25.80 24.13 24.55 23.08 23.50 22.08 22.50 21.o8 21.60 20.58 21.00 194 Crown Gutter Top of Transverse Section of Roadvrav line line, curb Colfax Street: (coat) At a point four hundred eighty- six (486) feet east of the east line of Bryant Avenue 20.05 19.63 20.05 ". At a point four hundred sixty-six (466) feet east of the east line of Bryant Avenue 20.25 19.83 20.25 At a 'point two hundred forty-six (246) feet east of the east line of Bryant Avenue 19.30 18,57 19.40. At a point one hundred forty-eight (148) feet east of the. east line of Bryant. Avenue 19.60 19.15 19.40. At a point ninety-one (91) feet east of the east 1 ne of Bryant Av. 19.40 18.65 19.40 At a point twenty-one (21) feet west of the east line of Bryant Av. 19.70 19.25 19.50 Bryant Avenue-.. At the north line of Grant Street 19.20 18.75 -19.00 At a po9.nt sixty-five (65) feet north of the north line of Grant St. 19.60 18.25 19.00 At a point two hundred forty-one (241) and sixty-seven hundredths (; 6 7 ) feet south of Colfax Street 19.50 19.05 19.30 At a point one hundred twenty-one (121) feet south of Colfax Street 19.20 18.45 19.20 At a point thirty-three (33) feet north of the south line of Colfax Street 19.70 19.25 19-.50 ,At a point fifty-five (55) feet north of the north line of Colfax Street. 19.50 118.75 19.50 At the southeasterly Right -of -Way line of the Sanitary District of Chicago = 19.70 19.25 19.50 Alley one hundred forty (140) feet, east of Bryant Avenue: At the north -line of Colfax Street 20.10 '19.65 19.90 At the south lure of Colfax Street 20 .10 19.65 19.90 Alley one hundred fifty (150) feet west of Ridge Avenue: At the north l in-e of Colfax Street 27.02 26.57 26.82 At the south line of Colfax Street 27.02 26.57 26.82 Alley two hundred thirty-one and sixty. seven hundredths (231.67) feet south of Colfax Street: At the west line of Bryant Avenue 20.00 19.55 19.80 At the s;•rast line of Bryant Avenue 20..00 19.55 19.80 9 T ' The grade of the crown line, gutter line and top of curb at intermediate points shall proportional to the foregoing. 19 be respectively o The datum plane hereinafter mentioned is the plane of low water mark of Lake Michigan in the year A. D., 1847, as established by the Trustees of the Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the north-west corner of Davis Street and Sherman Avenue, in said City of Evanston. The crown line hereinbefore mentioned shall be identical with the center line of the respective road- ways when completed. The gutter line hereinbefore mentioned shall be identical with the line where the surface of the road- ways when completed touches the face of the curbing on both sides of the respective roadways. The surface of the roadways herein provided to be paved when completed shall conform to the arc of a circle passing through the respective crown and gutter lines, and shall be true and symmetrical. GRADING Prior to laying down the pavement thereon, the roadways specified to be paved shall be cleaned in a thorough and workmanli a manner of all debris and rubbish, such as deteriorated pavements, crossings, box drains, culverts, stumps,�e c. The sub -grade shall be prepared by excavating the soil, or filling thereupon with other and suitable soil to such depths and shapes as will insure the finished pavement being at the grade established therefor. Spongy earth that is unfit to be left in the sub -grade shall be removed by the con- tractor without extra charge. The sub -grade shall be rolled with a suitable self-propelling roller or flooded with water, or both as may be found necessary and practicable to thoroughly compact same. Any depressions that may appear as the rolling or flooding of the sub -grade progresses shall be filled upon at the surface with suitable soil and thoroughly corn, pacted as before specified. CONCRETE CURB A concrete curb shall be constructed on both sides of the respective roadways herein provided to be paved. Said curb shall consist of a mixture, by volume, of one part of Portland cement, two parts of sand and four parts of crushed gravel or stone. Except that the top and exposed roadway face of the curb shall be surfaced to a depth of one-half inch with a mortar composed of two parts of Portland cement and three parts of clean, sharp sand of the sizes and quality hereinafter specified for the sand to be used in making this curb. The crushed gravel or stone specified for the body of the curb shall be clean, hard, free from dust, loam, vegetable or other deleterious matter, and shall show sharp edged cubical fracturing. This crushed gravel or stone shall be of variable sizes, grading from a maximum dimension of one inch down to a minimum of one-fourth inch, and so proportioned that the particles capable of passing through a screen of three -fourths inch mesh will fill the voids in the particles retained on such size screen, but without more than ten per cent excess of the smaller particles. The sand specified for the curb shall be free from clay, loam, vegetable or other deleterious matter. The grain shall be angular, and shall range in size from one -quarter inch down to the finest, but not more than 3 per cent shall pass through a seive having (100) one hundred meshes per lineal inch. The sand shall be of such quality that mortar composed of one part of the cement hereinbefore specified and three parts of the sand, by weight, when made into briquetts, will develop a tensile strength at least equal to the strength of a mortar of the same consistency and proportions made with the same cement and Standard Ottawa sand. The Portland cement specified for the curb shall be of such quality that representative samples collected form the shipments made for the job shall be capable of passing the tests for fineness, soundness, initial setting, and tensile strength hereinafter set forth for Portland cement. The sand and crushed gravel or stone shall be clean when delivered on the job and shall be kept clean until used. In no case shall the sand and crushed gravel or stone when used, contain frost or lumps of froz- en matter. Forms shall be used in constructing the curb. The forms shall be sound, free from warp, and of suffici- ent strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established lines and grades. I-NTooden forms shall be thoroughly wetted and metal forms shall be oiled be- fore concrete is deposited against them. All mortar and dirt shall be removed from forms that have pre- viously been used. The ingredients specified for the body of the curb shall be mixed in a batch machine mixer of a type that will insure a uniform mixture and product. Clean water, free from oil, acid, alkali, or vegetable matter shall be admitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the crushed gravel or stone from the mortar. Provided, that on such portions of the work as it may be imprac- ticable to use the machine mixer, thorough and efficient hand mixing will be allowed. The equipment used, if any, for hand mixing shall be as specified for mixing the surfacing mortar. The ingredients specified for the mortar to be used in surfacing the top and exposed roadway face of the curb shall be mixed on a movable, tight iron platform, of ample size to accommodate the manipulations specified, without getting the ingredients off the platform or'mixed with dirt. 196 c The Portland cement and sand specified for surfacing portions of the curb shall be thoroughly mixed on the platform with hoes or shovels, and until the color becomes uniform, after which sufficient water,'of the quality hereinbefore required, shall be gently added, while the mixing continues, to produce a stiff and homogeneous mortar. The concrete and the finishing mortar after being prepared as specified shall be promptly deposited and compacted in the forms, in layers not exceeding six inches in depth. The back of the curb shall be worked with a spade to secure a well filled surface. The front upper edge of the curb shall be rounded to a radius of one and one-half inches in such manner that the planes of the top and roadway face of the curb will be tan- gent to the curve described by said radius. As soon as the cement has sufficiently set, the forms shall be re- moved from the face of the curb; and the face mortar shall be promptly troweled down hard and smooth, drawing the cement from the crushed gravel or stone as little as possible. The gloss shall be removed with a wet brush. The curb shall be constructed in sections not less than four feet nor more than six feet in length. In con- structing the curb, all templates used to form the sections shall be kept perpendicular to the top of the curb. All joints shall be neatly tool finished. The joint marking shall correspond to the joint made by the tem- plates. The curb shall be twenty-four inches in depth, and the thickness shall vary uniformly from six inches at the top to eight inches at the bottom of the curb. The curb shall be built in such manner that the road- way face will be vertical; that the t op will be at the grade hereinbefore established; and that the back of the curb, at the top thereof shall be on the lines hereinbefore established. , The curb at intersecting streets and alleys shall be constructed to true curves tangent to the intersecting curb lines proper. The radius of the curve to which the back of the curb shall conform shall be ten feet for intersecting street and six feet for intersecting alley curb lines. Except as above specified, for intersecting street and alley curb lines, the curb shall be constructed paralleled to the center line of the respective road- ways herein provided to be paved. The curb shall be constructed at such distances from the center line of the roadways, herein provided to be paved, as will give the respective width of roadways hereinbefore speci- fied and established, when measured from back to back of curb in the manner and on the lines herembefore set forth. Trenches shall be excavated to sufficient width and depth to receive the curb and necessary moulding frames. Wherever other than sandy soil is encountered the curb trenches shall be excavated to a depth of six inches below the bottom of the curb and shall be re -filled to such depth with sand or cinders. The sand or cinders shall be compacted with water or by hand tampers. The frames shall be securely fastened in place and shall be accurately brought to line and grade before they are filled with concrete. The grade and line to which the frames are to be set shall be such as is necessary to insure the finished curb being true to the lines and grades hereinbefore established therefor. PORTLAND CEMENT CONCRETE FOUNDATION Upon the sub -grade prepared as hereinbefore specified, shall be constructed a Portland cement concrete base or foundation, five (5) inches thick. The concrete shall be composed by volume, of one (1) part of Portland cement; three (3) parts of clean, hard grained, and sharp sand; and five (5) parts of clean, hard limestone or gravel broken or graded so as to yield a range of sizes (in longest dimension) from two (2) inches down to one-half (1-2) inch, and so proportioned as to produce a maximum number and minimum volume of interstices in the aggregate. The concrete shall be prepared by mixing the cement, sand and stone or gravel in an approved batch mixer with sufficient clean water and mixing sufficiently to produce a plasticity best suited to the condi- tions of weather and soil. The concrete mixed as above specified, shall be promptly spread on the surface of the sub -grade to the required thickness, and to such shape and grade as will insure the upper surface of the foundation after be- ing thoroughly compacted by rolling or tamping, being parallel with and three (3) inches below the grade hereinbefore specified for the finished roadway. The upper surface of the foundation shall not be troweled smooth but shall be left moderately rough to grip the bituminou' macadam pavement specified to be laid thereon. 197 BITUMINOUS MACADAM PAVEMENT ! Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of "clean, hard, broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of three (3) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. ' i As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be evenly applied to the limestone ( at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one and three quarters (1 3-4) gallons thereof being evenly spread on and used in each and every square yard of the roadway, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size rang- ing from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diam- eter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screen- ings the roadway so covered, shall be given a thorough rolling with a roller of the weight and type herein - before named. This rolling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the roadway shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be evenly applied to the surface of the pavement a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread as to insure not less than three quarters (3-4) gallon thereof being evenly spread and used on each and every square yard of road- way. Immediately after the second application of asphaltic cement is made and spread and progressing therewith there shall be evenly spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one - eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of the roadway. A :inal rolling of the roadway shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the roadway is thoroughly compacted, and brought to a surface, free from de- pressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement herein provided to be built, shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The gutters shall be kept trimmed to the required thickness and grade as the work progresses. The cubic yardage of stone, herein required, shall be verified by measurement of volume thereof in cars, or other conveyances, transporting same to said City, and prior to initial unloading, and shall be fur- ther verified by measured length of dumps and height of grade marks on the work. The stone shall be hauled on to the work in boxes of uniform size and contents and of such shape as to enable an easy and exact determination of the volume contained therein to be made on the site. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following require- ments and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural as- phalt and a flux to be tested with and proven the beat suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so prepared for use as to best adapted to the climatic and traffic conditions of the roadway on which it is to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit un- der 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various Hydrocarbons composing it shall be pres- ent in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. `'. (6). 50 grams of the cem_erit upon being maintained at a uniform temperature 'of 326 degrees Fahrenheit, for five hours -in a cylindrical vessel two and .one-half inches in diameter, shall not lose more than 2 per' cent in weight, 'and the penetration of the residue shall not be less than one-half that tested as above described. (r). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95,%. (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98 %% shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in 75 degrees Baume petroleum naptha, at the air temperature to the extent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than.9 per cent nor more than 15 per cent of fixed carbon or residue coke. CATCHBASINS For the purpose of receiving storm waters from the surface of the roadway or roadways, as the case may be, herein provided to be paved seven catchbasins shall be constructed at the necessary points along the sides of the afore- said roadway or roadways. Said catchbasins shall be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catchbasins, when in place, to the upper surface of the proposed curbing. Said catchbasins shall be cylindrical in shape having an internal diameter of forty-two (42) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty- four (24) inches at the top of the masonry by means of eight (8) header courses of brick laid endwise and horizon- tally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catchbasins. Said catchbasins shall have walls eight (8) inches thick, built (except as above specified for header courses) of aiternate vertical and horizontal courses. The brick used in the 'construction of said catchbasins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1%) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch - basins shall each rest on a solid bottom of two (2) inch pine planks laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure sixty (60) inches in diameter and shall have its upper side placed five and one-half (5/) feet below the upper surface of the brick wall for said catchbasins. Said catch - basins shall be connected with the sewer or sewers, as the case may be, now existing or herein provided to be con- structed, as the case may be, in and along the center line of the said roadway or roadways at the side of which the respective catchbasins are to be constructed. Said catchbasins shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed, tile pipe having an internal diameter of nine (9) inches and of the type known as "Bell and Spigot" the metal of which pipe shall be thirteen -sixteenths (13/16) of an inch in thickness and shall be not less than two (2) feet in length. Said pipe shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipes shall be securely sealed -, ith a mortar of the quality herein required for brick walls in catch -basins. Each catchbasin connection shall start in a nine (9) inch vitrified, salt glazed, tile pipe "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the sewer at a point not less than six (6) feet in advance of the catchbasin, measured along and in the downstream direction of the sewer from a point on said sewer directly opposite the catchbasin. The pipes shall be laid true to line and grade and the connection shall enter the catchbasin at a point two and one-half (2% ) feet above the plank bottom. The pipe entering the catchbasin through the brick walls thereof shall be an elbow with the bell end turned downward inside the catchbasin to form a trap. r The pipe shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be backfilled as soon as prac- ticable in order to occasion the least possible inconvenience to the public in use of the street. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed' under and around the pipes. Said catchbasins shall each be equipped and fitted with a castiron cover weighing not less than three hundred thirty (330) pounds and having a vertical height of thirteen (13) inches, which cover shall be of the same size and pattern or equal in size, quality and workmanship to the castiron covers now in use on existing catchbasins in Dempster! Street between Ridge Avenue and Dodge Avenue in said City of Evanston. Said catchbasin covers herein provided to be furnished and set shall rest on the walls of the catchbasins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catchbasins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the elevations hereinbeforespecified for the top F of the curb -at the points where said catchbasins are to be located. . I,� a.n4,: � A?r..:•J:.-,i ii: i''ii �*ggC',-.,r` ', f' «f' .!a 1:'i l_. ?c k. RON _..'loom9 �- -- - - MANHOLES TO 13E ADJUSTED AND BROUGHT TO GRADED The '6 brick manholes now located within the space herein provided to be paved, and which are already , equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the i tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said manholes as may be necessary to bring the covers of the manholes to the height above specified and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one- half (1/) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. VALVE CHAMBERS TO BE ADJUSTED AND BROUGHT TO GRADE The 2 brick valve chambers now located within the space herein provided to be paved, and which are already equipped wit4 cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said valve chambers as may be necessary to bring the covers to the height above specified, and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a mortar, composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 1-2) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. CATCH BASINS TO BE ADJUSTED AND BROUGHT TO GRADE The 4 brick catch basins now located along the sides of the roadway or roadways, as the case may be, herein, provided to be paved, shall have their rovers raised or lowered as the case may be in such manner as to bring the tops thereof to the surface of the adjacent ground. Such adjustments as may be necessary shall be made to the walls of said catch -basins with hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1/) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. Said covers shall be imbedded in mortar of the quality hereinbefore specified in adjusting said walls. Said catch -basins shall be connected to the curbs by means of sewer pipes of the kind, size and quality and laid in the manner hereinbefore specified for pipe used in constructing surface drainage sewers. Openings shall be made in curbs at points of said connections in such manner as to permit free and un- interrupted passage of storm waters, from the surface of the pavement hereinbefore specified, to said basins.. ADJUSTMENT OF PRESENT BRICK PAVING The present brick paving, where the same adjoins the proposed improvement, shall be adjusted to conform to the upper surface of the proposed improvement when completed and in place. Said adjustment shall be made in the same manner and with the same kind of material originally used in constructing said present brick paving. MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated -jparticles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAN D CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -twit: Fineness. The cement shall be so ground that 92 7o will pass through a standard sieve, having 10,000 meshes and 757o' will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, • h warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the en at pat. _ Setting. The cement, when mixed with twenty- eight Per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the .period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The tile pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said :pipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. I For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of twelve hundred sixty—eight and eighty—five hundredths dollars ($1,268.85 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of twelve hundred sixty—eight e d eiZhty—five hundredths dollars ($1,268.85 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into ten installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the 1Tavor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8.' This ordinance shall be in force from and after its passage. Adopted by the City Council of theCity of Evanston on the 17th day of October A.D. 1922. Approved. Oct. 18th, 1922. John F. Hahn, City Clerk. H.P. Pea.rsons, Mayor. AIT ORDINANCE lip ,t2 is AMENDING AN ORDINANCE ENTITLED "An ordinance to classify, regulate and restrict the locations of trades and industries and the loca- tion of buildings designed for specified uses and to regulate and limit the height and bulk of buildings hereafter erected, to .regulate and limit the intensity of the use of lot areas and to regulate and determ ine the area of yards, courts and other open_ spaces within and surrounding such buildings, and to establish the boundaries of districts for the said purposes and prescribing penalties for the violation of its provisions," adopted by the City Council of the City of Evanston, January 18, 1921, by classi- fying on the "Use Map" of said ordinance adopted January 18, 1921 as a "C" Commercial District instead of a "B" Residence District certain described property and prescribing penalties for a viola- 'tion of its provisions. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVA ,)'TON, ILLINOIS: SECTION 1. That the ordinance entitled "An ordinance to classify, regulate and restrict the locations of trades and industries land the location of buildings designed for specified uses and o regulate and limit the height and bulk of buildings hereafter erected,,to regulate -and limit the intensity of the use of lot areas and to regulate o;nd determine the area of yards, courts and other open spaces within and surrounding such buildings and to establish the boundaries of districts for the said purposes and prescribing penalties for the violation of its provisions," adopted by the City Council of the City of Evanston, January 18, 1921, be and the same hereby is amended as hereinafter set forth. SECTION 2. That the district described as that part of Lot ten (10) in Block twenty (20) , Village of Evanston, in the East half of fractional section eighteen (18), Township forty-one (41) North, Range Fourteen (14) South of Church Street in the City of Evanston, Cook County, Illinois, lying east of the west one hundred seven and four tenths (107.4) feet thereof, and having a frontage on Davis Street of ninety-three and two tenths (93.2) feet, more or less, and a frontage on Hinman Avenue of sixty-six and eight hundredths (66.08) feet, more or less, otherwise known by street and house numbers as numbers 501,503, 505 and 507 Davis Street, and numbers 1600, 1602 and 1604 Hinman Avenue 'arid classified on the "Use Mari", said map being a part of said ordinance adopted January 18, 1921, as a "B" Residence District, be and the said district hereby is changed to a "C" Commercial District. SECTION 3. The penalties provided for in the said ordinance adopted January 18, 1921, for a violation of any of its regulations andrestrictions applicable to "C" Commercial Districts shall be an-olicable to said ordinance as herein amended. SECTION 4. All ordinances or parts of ordinances in con- flict with any of the provisions of this ordinance are hereby rep ea led. SECTION 5. This ordinance shall be in effect from and after its passage, ap-proval, pub licati on and recording according to law, Adopted by of Evanston A.D. 1922. the City Council on the 17th d-ay John F.- Approved: Oct. 18th, 1922. H.P. Pearsons, Mayor. Published in News' Index October 19, 1922. of the City of October, HaTi , City Clerk. 6 _ 2o2 RECOMMENDATION, ESTIMATE AND ORDINANCE RECOIJDENDATION BY BOARD OF LOCAL IMPRO VEIENT S To the Mayor and Aldennen of the City of Evanston in the City Council Assembled: We herewith submit an ordinance providing that the roadway of Harvard Street from the west curb line of Ridge Avenue to the east lot line of Asbury Avenue, also the roadway of intersecting street and alleys lying tivithin said portion of said Harvard Street and not included in the roadway thereof, in the City of Eva-qston, County of `Cook, State of Illinois, be improved by grading, curbing with a Porltnad Cement Concrete Curb, paving -with a bituminous inacadam pavement laid on a Portland Cement Concrete base or foundation, constructing surface drainage sewer, catch basins, catch basin connections to surface. drainage sewer, and manhole, adjusting catch basins, and manhole~; together with an estimate of the cost of . said improvement and recommend the passage of said ordinance and the making of the improvement con- templated therein. Respectfully submitted, H.P. Pearsons, Wm. Blanchard, Hal W. Smith, Board of Local Impro vein ents of the City of Evanston, Illinois. Dated, Evanston, Illinois. October 31st, 1922. ESTIMATE OF M\TGINEER OF BOARD OF LOCAL IMPROVI±MENTS To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board 'of Local Improvements of the City of Evanston having; adopted a resolution that the roadway of Harvard Street from the west curb line of Ridge Avenue to the e-:ast lot line of Asbury Avenue, also the roadway of intersecting street and alleys ling within said portion of said Harvard Street and not included in the roadway thereof, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, curbing with a Portland Cement Coner.ete Curb,' paving with a bituminous macadam pavement laid on a Portland Cement Concrete base or foundation, construct- ing surface drainage sewer, catch basins, catch basin connections to suxfa.ce drainage sewer, and manhole, adjusting catch basins, and manholes; and presented to the City Council of the City of Evanston a rec�=endottion that such `improvement be made, I here- with submit an estimate of the cost of said improvement as des- cribed in said resolution, including labor, material and lawful ehpenses attending the proceedings for making said improvement and the cost of making and collecting the assessment, as provided by law, viz: ESTIMATE OF COST 1425 Cu. yds. of grading 8 $1.60 per cu. yd. $ 2,280.00 3000 Lin. ft. of Portland Cement Concrete Curb laid complete in place ® $1.25 per lin. ft. 3,760.00 4000 sq. yds. of Portland Cement Concrete base or foundation laid complete in Llace @ $1.80 per sq. ,yd. 7,200.00 4000 sq. yds. of bituminous macadam paving laid complete in place © $1.50 per sq, yd. 6,000.00 90 Lin. ft. of 9" internal diameter surface drainage sewer averar-;e •depth of cut five (5) feet including trenching and back filling laid complete in place © $2.35 per lin. ft. 211.50 2 Brick Catch basins including cast iron covers plank bottoms, excavating and back filling •com- plete in place © $75.00 each 150.00 24 Lin. ft. of 9" internal diameter catch b asin ccnnections to surface drainage sewer, average depth of cut four (4) feet, including trench - in F and back f illing , laid complete in place ® 1.00 per lin. ft. 24.00 1 brick ma.n1l_ole including cast iron cover exca nation & back filling complete, in place 75.00 203 8 catch basins adjusted to grade O $12.00 each $ 96.00 6 manholes adjusted to ,grade @ $12. 00 each 72.00 For lawful expenses attending the proceedings for making said improvement and the cost of mating and collecting the assessment therefor, not to exceed six per centum (6%) of the above, -to-wit: $19,858.50y1.191.51 Total 21,050.01 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the .above prop sed improve- ment and the lawful expenses attending the same. Dated Evanston, Illinois. October 31st, 1922. V1m. Blanchard Engineer -of the Board of Local Im- p rov ement s of the City of Evanston. AN ORD 11TANCE Providing that the .roadway of Harvard Street from the west curb line of Ridge Avenue to the east lot line of Asbury Avenue, also the roadway of intersecting street and -alleys lying within said portion of -said Harvard Street and not included in the roadway thereof, in the City of Evanston, County of Cook, State of Illinois, be improved by -grading, curbing with a Portland Cement Concrete Curb, paving with a bituminous macadam pavement laid on a Portland Cement Concrete base or foundation, constructing surface drainage sewer, catch basins, catch basin connections to surface drainage sewer, and manhole, adjusting catch basins, and manholes. BE IT ORDAIIIED BY THE CITY COUNCIL OF THE CITY OF EVAITSTON: SECTION 1. That a local improvement shall be made within theCity of -Evanston, County of Cook, State of Illinois, the nature, character, locality and description of vhich local im- provement is as follows, to -wit: That the roadway of Harvard Street from the west curb _line of Ridge Avenue to the east lot line of Asbury Avenue, also the roadway of-intersecti.n,; street and alleys lying within sai_d.portion of said Harvard Street and not included in the roadway thereof, in the- City of Evanston, County of Cook, Stateof Illinois, be and the same is hereby ordered improved as f ollows: LOCATION OF ROADWAYS The -center line of the roadways herein provided to be paved shall coincide with the center line of the respective streets and alleys within which said roadways are included. WIDTH OF ROAMYS The 1vidth of- the roadways herein provided to be paved shall be as follows, measured in feet from back to back of the curb herein specified and at right angles to the center line of the respective street or alley, as the case may be, to -wit : = Roadway of Harvard Street: At the west curb line of Ridge Avenue 24 feet At the east lot line of Asbury Avenue 24 feet Roadway of Barton Avenue: At the sout'i line of Harvard Street 24 feet At the north line of Harvard Street 24 feet Roadway of dntersec.ting alley. one hundred seventy- five (175) feet yiest of Ridge Ave..ue: At the sol.zth curb line of Harvard Street 20 feet At the south line of Harvard Street 20 feet '204 Roadway of intersecting alley one hundred seventy-two (172) feet west of Barton Avenue: At . the north line of Harvard Street 20 feet.. At the south line of Harvard Street 20 .feet The width of roadway at intermediate points shall be respectively proportional to the foregoing. Grade of Roadwav and Curb The grade of the roadways herein provided to be paved, when finished, and the grade of the top of the curb hereinafter speci- fied, when completed and set in place, are hereby estab)ished as follows, measured in feet and decimal parts of a foot above the datum plane of the City of Evanston, to -wit: Crown Gutter top of Transverse Section of Roadway. line line curb Harvard Street: At the west curb line of Ridge Ave. At the viest lot line of Ridge Ave. At a point seven hundred tvrenty- six (726) feet east of the east line of Barton Avenue At a -point seven hundred sixteen (716) feet east of the east line 37.00 36.5 0 37.00 37.45 37.00 37.25 36.13 36.53 36.13 of Barton Avenue 35.98 35.48 35.98 At a point six hundred ninety-six (696) feet east of the east line of Barton Avenue At a point six hundred eighty-six (686) feet east of the east line of Barton Avenue At a point six hundred sixteen (616) feet east of the east line of Barton Avenue At a point five hundred six (506) feet east of the east line of Barton Avenue At a point three hundred ninety-six (396) feet east of the east line of Barton Avenue At a point three hundred nine (309) feet east of the east line of Barton Avenue - At a point two hundred twenty-two (222) feet east of the east line Barton Avenue At a point twenty-one (21) feet west of the east line of Berton Avenue At a point twenty-one (21) feet east of the west line of Barton Ave, At a point one hundred forty (140) feet west of the west line of Barton Ave. At a point one hundred eighty-two (182) feet west of the !rest line of Barton Avenue At a point one hundred (100) feet 35.68 35.18 35.68 35.50 35.00 35.50 34.00 33.25 34.00 32.60 32.10 32.60 32.10 31.50 32.10 32.50 32.05 32.30 of 32.30 31.60 32.30 34.20 33.50 34.20 33.50 33.05 32.30 33.00 east of the east line of Asbuty Ave.32.30 At the east line of Asbury Ave. 32,60 Barton Avenue: At the north line of Harvard St. At the south line of Harvard St. Alley one hundred seventy-five (1.75t) feet west of the west line of Ridge Av. At the south line of Harvard St. 34.35 34.35 32.50 31 .5 5 32.15 33. 90 33.90 34.00 34.00 33.05 32.80 32.30 32.40 34.15 34.15 36.55 36.1.0 36.35 Alley one hundred seventy-two (172) feet west of the west line of Barton Avenue: At the south line of Harvard St. 33.50 33.05 33.30 At the north line of Harvard St. 33.50 33.05 33.30 Tti'e, ga f the `crbwri line; gizter line. and trip of to `frifi=rrit _iate point's shall be respectively propor onal.'to the foregoing. The datum plane hereinafter mentioned is the plane of low water mark of Lake Michigan in the year A. D., 1847, as established by the Trustees of the Illinois and Michigan Canal and is 22.41. feet below the U. S: Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the north-west corner of Davis Street and Sherman Avenue, in said City of Evanston. The crown line hereinbefore mentioned shall be identical with the center line of the respective road- ways when completed. The gutter line hereinbefore mentioned shall be identical with the line where the surface of the road- ways when completed touches the face of the curbing on both sides of the respective roadways. The surface of the roadways herein provided to be paved when completed shall conform to the arc of a circle passing through the respective crown and gutter lines, and shall be true and symmetrical. GRADING Prior to laying down the pavement thereon, the roadways specified to be paved shall be cleaned in a thorough and workmanlike manner of all debris and rubbish, such as deteriorated pavements, crossings, box drains, culverts, stumps, etc. The sub -grade shall be prepared by excavating the soil, or filling thereupon with other and suitable soil to such depths and shapes as will insure the finished pavement being at the grade established therefor. Spongy earth that is unfit to be left in the sub -grade shall be removed by the con- tractor without extra charge. The sub -grade shall be rolled with a suitable self-propelling roller or flooded with water, or both as may be found necessary and practicable to thoroughly compact same. Any depressions that may appear as the rolling or flooding of the sub -grade progresses shall be filled upon at the surface with suitable soil and thoroughly com- pacted as before specified. CONCRETE CURB A concrete curb shall be constructed on both sides of the respective roadways herein provided to be paved. Said curb shall consist of a mixture, by volume, of one part of Portland cement, two parts of sand and four parts of crushed gravel or stone. Except that the top and exposed roadway face of the curb shall be surfaced to a depth of one-half inch with a mortar composed of two parts of Portland cement and three parts of clean, sharp sand of the sizes and quality hereinafter specified for the sand to be used in making this curb. The crushed gravel or stone specified for the body of the curb shall be clean, hard, free from dust, loam, vegetable or other deleterious matter, and shall show sharp edged cubical fracturing. This crushed gravel or stone shall be of variable sizes, grading from a maximum dimension of one inch down to a minimum of one-fourth inch, and so proportioned that the particles capable of passing through a screen of three -fourths inch mesh will fill the voids in the particles retained on such size screen, but without more than ten per cent excess of the smaller particles. The sand specified for the curb shall be free from clay, loam, vegetable or other deleterious matter. The grain shall be angular, and shall range in size from one -quarter inch down to the finest, but not more than 3 per cent shall pass through a seive having (100) one hundred meshes per lineal inch. The sand shall be of such quality that mortar composed of one part of the cement hereinbefore specified and three parts of the sand, by weight, when made into briquetts, will develop a tensile strength at least equal to the strength of a mortar of the same consistency and proportions made with the same cement and Standard Ottawa sand. The Portland cement specified for the curb shall be of such quality that representative samples collected form the shipments made for the job shall be capable of passing the tests for fineness, soundness, initial setting, and tensile strength hereinafter set forth for Portland cement. The sand and crushed gravel or stone shall be clean when delivered on the job and shall be kept clean until used. In no case shall the sand and crushed gravel or stone when used, contain frost or lumps of froz- en matter. Forms shall be used in constructing the curb. The forms shall be sound, free from warp, and'of suffici- ent strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established lines and grades. Wooden forms shall be thoroughly wetted and metal forms shall be oiled be- fore concrete is deposited against them. All mortar and dirt shall be removed from forms that have pre- viously been used. The ingredients specified for the body of the curb shall be mixed in a batch machine mixer of a type that will insure a uniform mixture and product. Clean water, free from oil, acid, alkali, or vegetable matter shall be admitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the crushed gravel or stone from the mortar. Provided, that on such portions of the work as it may be imprac- ticable to use the machine mixer, thorough and efficient hand mixing will be allowed. The equipment used, if any, for hand mixing shall be as specified for mixing the surfacing mortar. The ingredients specified for the mortar to be used in surfacing the top and exposed roadway face of . the curb shall be mixed on a movable, tight iron platform, of ample size to accommodate the manipulations specified, without getting the ingredients off the platform or mixed with dirt. 206 The Portland cement and sand specified for surfacing portions of the curb shall be thoroughly mixed, on the platform with hoes or shovels, and until the color becomes uniform, after which sufficient water, of the quality hereinbefore required, shall be gently added, while the mixing continues, to produce a stiff and homogeneous mortar. The concrete and the finishing mortar after being prepared as specified shall be promptly deposited and compacted in the forms, in layers not exceeding six inches in depth. The back of the curb shall be worked with a spade to secure a well filled surface. The front upper edge of the curb shall be rounded to a radius of one and one-half inches in such manner that the planes of the top and roadway face of the curb will be tan- gent to the curve described by said radius. As soon as the cement has sufficiently set, the forms shall be re- moved from the face of the curb; and the face mortar shall be promptly troweled down hard and smooth, drawing the cement from the crushed gravel or stone as little as possible. The gloss shall be removed with a vet brush. The curb shall be constructed in sections not less than four feet nor more than six feet in length. In con- structing the curb, all templates used to form the sections shall be kept perpendicular to the top of the curb. All joints shall be neatly tool finished. The joint marking shall correspond to the joint made by the tem- plates. The curb shall be twenty-four inches in depth, and the thickness shall vary uniformly from six inches at the top to eight inches at the bottom of the curb. The curb shall be built in such manner that the road- way face will be vertical; that the t op will be at the grade hereinbefore established; and that the back of the curb, at the top thereof shall be on the lines hereinbefore established. The curb at intersecting streets and alleys shall be c&structed to true curves tangent to the intersecting curb lines proper. The radius of the curve to which the back of the curb shall conform shall be ten feet for intersecting street and six feet for intersecting alley curb lines. Except as above specified, for intersecting street and alley curb lines, the curb shall be constructed paralleled to the center line of the respective road- ways herein provided to be paved. The curb shall be constructed at such distances from the center line of the roadways, herein provided to be paved, as will give the respective width of roadways hereinbefore speci- fied and established, when measured from back to back of curb in the manner and on the lines herembefore set forth. Trenches shall be excavated to sufficient width and depth to receive the curb and necessary moulding frames. Wherever other than sandy soil is encountered the curb trenches shall be excavated to a depth of six inches below the bottom of the curb and shall be re -filled to such depth with sand or cinders. The sand or cinders shall be compacted with water or by hand tampers. The frames shall be securely fastened in place and shall be accurately brought to line and grade before they are filled with concrete. 'The grade and line to which the frames are to be set shall be such as is necessary to insure the finished curb being true to the lines and grades hereinbefore established therefor. PORTLAND CEMENT CONCRETE FOUNDATION Upon the sub -grade prepared as hereinbefore specified, shall be constructed a Portland cement concrete base or foundation, five (5) inches thick. The concrete shall be composed by volume, of one (1) part of Portland cement; three (3) parts of clean, hard grained, and sharp sand; and five (5) parts of clean, hard limestone or gravel broken or graded so as to yield a range of sizes (in longest dimension) from two (2) inches down to one-half (1-2) inch, and so proportioned as to produce a maximum number and minimum volume of interstices in the aggregate. The concrete shall be prepared by mixing the cement, sand and stone or gravel in an approved batch mixer with sufficient clean water and mixing sufficiently to produce a plasticity best suited to the condi- tions of weather and soil. The concrete mixed as above specified, shall be promptly spread on the surface of the sub -grade to the required thickness, and to such shape and grade as will insure the upper surface of the foundation after be- ing thoroughly compacted by rolling or tamping, being parallel with and three (3) inches below the grade hereinbefore specified for the finished roadway. The upper surface of the foundation shall not be troweled smooth but shall be left moderately rough to grip the bituminous macadam pavement specified to be laid thereon. u IZ 0198 � 207 BITUMINOUS MACADAM PAVEMENT Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard, broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of three (3) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be evenly applied to the limestone ( at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one and three quarters (1 3-4) gallons thereof being evenly spread on and used in each and every square yard of the roadway, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size rang- ing from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diam- eter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screen- ings the roadway so covered, shall be given a thorough rolling with a roller of the weight and type herein - before named. This rolling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the roadway shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be evenly applied to the surface of the pavement a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread as to insure not less than three quarters (3-4) gallon thereof being evenly spread and used on each and every square yard of road- way. Immediately after the second application of asphaltic cement is made and spread and progressing therewith there shall be evenly spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one - eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of the roadway. A final rolling of the roadway shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the roadway is thoroughly compacted, and brought to a surface, free from de- pressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement herein provided to be built, shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The gutters shall be kept trimmed to the required thickness and grade as the work progresses. The cubic yardage of stone, herein required, shall be verified by measurement of volume thereof in cars, or other conveyances, transporting same to said City, and prior to initial unloading, and shall be fur- ther verified by measured length of dumps and height of grade marks on the work. The stone shall be hauled on to the work in boxes of uniform size and contents and of such shape as to enable an easy and exact determination of the volume contained therein to be made on the site. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following require- ments and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural as- phalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical I- ,--------^--•---' --ter �- -�'� 208 ' properties and be so prepared for use as to best adapted to the climatic and traffic conditions of the roadway on which it is to be used. (2). Its specific gravity shall be greater than 980 at 77- degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under - 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit un- der 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or -inert free carbon, coal tar or any of its products, or other injurious matters, and'the various hydrocarbons composing it shall be pres- ent in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95%. (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98 /% shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in 75 degrees Baume petroleum naptha, at the air temperature to the extent of not less than 72 per cent. 1; (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per �L cent of fixed carbon or residue coke. SURFACE DRAINAGE SEWER# For the purpose of carrying off storm waters from the surface of the pavement herein provided to be constructed, surface drainage sewer# of vitrified, salt glazed, tile pipe shall be laid as hereinafter specified. Said sewer# shall be laid in open trenches in the ground in such manner as to conform to the elevations, lines and grades hereinafter specified. The pipe used in the construction of said sewer# shall be of the type known as "Bell and Spigot" having an internal' diameter of nine (9) inches, the metal of which pipe shall have a thickness of thirteen -sixteenths (13/16) of an inch and shall be not less than two (2) feet in length, cylindrical, straight, smooth, thoroughly vitrified, salt glazed, free from cracks or blisters and of the best quality and workmanship. The joints between the pipes shall be securely sealed with a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1%) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The joints between said pipes shall be wiped and pointed inside the pipes. The interior of the pipes shall be kept free from dirt or refuse of every description and shall be left clean at the completion of the work. The open trenches excavated to receive said sewerie, shall be made at least twelve (12) inches wider than the ex- terior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing joints. The materials excavated shall be kept compactly along the sides of the trench and shall be backfilled as soon as practic- able in order to occasion the least possible inconvenience to the public in use of the street or alley as the case may be. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. The open and unconnected ends of said sewers shall each be securely closed with a salt glazed, vitrified tile disc, and sealed in the manner above specified for joints between pipes. Said sewer or sewers as the case may be shall be laid as follows, to -wit: (1) In and alon'g the center line of Harvard Street from and connecting with the sewer now in place along the center line of said Harvard Street at a point one hundred seventy-two (172) feet crest of the vest line of Barton Avenue, .rest to a point one hundred (100) feet east of the east line of Asbury Avenue. The internal die neter of this server shall be nine (9) inches. At its connection Nith the aforesaid sevrer in Harvard Street, the elevation of the inside bottom of this sewer shall be twenty-seven and sill -tenths (27.6) feet above 4he datum plane hereinbefore defined and the grade thereof shall rise thence at a uni-. form rate to ar- elevation of twenty-seven and eight -tenths (27.8) feet s above said datum plane at its terminus. MANHOLE® One brick manhole# shall be built of hard burned sewer brick, upon the sewer or sewers, as the case may be, hereinbefore provided to be constructed and shall be located at the points hereinafter specified. Said manholesshall be placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbefore specified in such manner as to bring the tops of the iron covert herein required for said manholes when in place to the upper surface of the proposed pavement. Said manhole: shall be cylindrical in shape having an internal diameter of thirty- six (36) inches at the upper surface of the base and upward to the lowest header course being uniformly drawn in to twenty-four (24) inches in diameter at the top of the masonry by means of six (6) header courses of brick laid end- wise and horizontally, the diameter being decreased uniformly by each course, to fit the iron covers- hereinafter specified to be furnished and set on the walls of said manhole+. The walls of said manhole* shall rest upon the base thereof without offsetting and shall be eight (8) inches thick, built (except as above specified for header courses) of alter- nate vertical and horizontal courses of brick. The brick used in the construction of said manholer shall be thoroughly wetted with water before being placed and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1;42) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manholeg shall begin at a point five (5) inches below the outside bottom of the sewer hereinbefore specified and shall extend upward to said outside bottom and along the sides of said sewer to a point midway between the top and bottom of said sewer, said base to be circular in form, the diameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manhole# shall be neatly removed leaving the lower half thereof to form the invert of the manhole. Said manhole► shall amok be equipped with a circular castiron cover having a tight lid, weighing not less than five hundred and forty (540) pounds, of the type known as "Chicago City Standard Heavy" having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two (22) and three - fourths (Y4) inches at the top thereof. Said manhole covers herein specified to be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the tops of the walls of said manholer, which walls shall be built to such height as will bring the tops, of the covers when set in place, to the surface of the pavement hereinbefore specified. Said manholes herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: ine on the center line of Harvaru Street t,.t I)oint one hundred (100) _'eet ca.3t of the cast line of Asbury Avenue. CATCHBASINS For the purpose of receiving storm waters from the surface of the roadway or roadways, as the case may be, herein provided to be paved tt(o catchbasins shall be constructed at the necessary points along the sides of the afore- said roadway or roadways. Said catchbasins shall be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catchbasins, when in place, to the upper surface of the proposed curbing. Said catchbasins shall be cylindrical in shape having an internal diameter of forty-two (42) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty- four (24) inches at the top of the masonry by means of eight (8) header courses of brick laid endwise and horizon- tally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catchbasins. Said catchbasins' shall have walls eight (8) inches thick, built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catchbasins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1/) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch - basins shall each rest on a solid bottom of two (2) inch pine planks laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure sixty (60) inches in diameter and shall have its upper side placed five and one-half (5/) feet below the upper surface of the brick wall for said catchbasins. Said catch - basins shall be connected with the sewer or sewers, as the case may be, now existing or herein provided to be con- structed, as the case may be, in and along the center line of the said roadway or roadways at the side of which the respective catchbasins are to be constructed. Said catchbasins shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed, tile pipe having an internal diameter of nine (9) inches and of the type known as "Bell and Spigot" the metal of which pipe shall be thirteen -sixteenths (13116) of an inch in thickness and shall be not less than two (2) feet in length. Said pipe shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipes shall be securely sealed with a mortar of the quality herein required for brick walls in catch -basins. 210 Each catchbasin connection shall start in a nine (9) inch vitrified, salt glazed,.tile pipe "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the sewer at a point not less than six (6) feet in advance of the catchbasin, measured along and in the downstream direction of the sewer from a point on said sewer directly opposite the catchbasin. The pipes shall be laid true to line and grade and the connection shall enter the catchbasin at a point two and one-half (2/) feet above the plank bottom. The pipe entering the catchbasin through the brick walls thereof shall be an elbow with the bell end turned downward inside the catchbasin to form a trap. The pipe shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be backfilled as soon as prac- ticable in order to occasion the least possible inconvenience to the public in use of the street. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catchbasins shall each be equipped and fitted with a castiron cover weighing not less than three hundred thirty (330) pounds and having a vertical height of thirteen (13) inches, which cover shall be of the same size and pattern or equal in size, quality and workmanship to the castiron covers now in use on existing catchbasins in Dempster Street between Ridge Avenue and Dodge Avenue in said City of Evanston. Said catchbasin covers herein provided to be furnished and set shall rest on the walls of the catchbasins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catchbasins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the elevations hereinbefore specified for the top ,,of the curb at the points where said catchbasins are to be located. MANHOLES TO BE ADJUSTED AND BROUGHT TO GRADE The G brick manholes now located within the space herein provided to be paved, and which are already equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said manholes as may be necessary to bring the covers of the manholes to the height above specified and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one- half (1/) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. 'i ne hick valve chambers now located within the space herein provided to be paved, and wh' re already equipped wit c covers, shall have their covers raise e may be, to bring the tops thereof to the surface o ent rt�'iinistied. Such adjustment shall be made to the walls of said valve chambers as may be eS"S"ary b 'n�- the covers to the height above specified, and also to insure a safe and servicea way. In making said ment, hard burned sewer brick laid in a mortar, composed b e of one (1) part of Portland cement of thality and one and one-half (1 1-2) part can sharp sand mixed with sufficient clean water to give proper p ' shall be used. Said —Covers shall be imbedded in a mortar of the kind and quality required for use in adjusting sai8'wa114, _ CATCH BASINS TO BE ADJUSTED AND BROUGHT TO GRADE The 8 brick catch basins now located along the sides of the roadway or roadways, as the case may be, herein provided to be paved, shall have their rovers raised or lowered as the case may, be in such manner as to bring the tops thereof to the surface of the adjacent ground. Such adjustments as may be necessary shall be made to the walls of said catch -basins with hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (7/) parts of clean - sharp sand mixed with sufficient clean water to give proper plasticity. Said covers shall be imbedded in mortar of the quality hereinbefore specified in adjusting said walls. Said catch -basins shall be connected to the curbs by means of sewer pipes of the kind, size and quality and laid in the manner hereinbefore specified for pipe used in constructing surface drainage sewers. Openings shall be made in curbs at points of said connections in such manner as to permit free and un- interrupted passage of storm waters, from the surface of the pavement hereinbefore specified, to said basins. 1Z.19198� 21 MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes'and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious' matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (26) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that .mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the.same consistency and proportion, made with the same cement and standard Ottawa .sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL .All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT . The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit: Fineness. The cement shall be so ground that 927o will pass through a standard sieve, having 10,000 meshes and 757o will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water sit days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ... .......................... 500 lbs. 28 days (1 day in moist air, 27 days in water) .................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ...... :.......................... 275 lbs. The briquettes shall show no retrogression in strength within the .period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. �I _21. SEWER PIPE The tile ,pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said 1pipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole. cost thereof including the sum of eleven hundred ninety-one and fi_ ty-one hundredths dollars ($ 1,191.51 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of eleven hundred ninety-one and fifty-one hundredths dollars ($ 1,191.51 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into ten installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest ,at the rate of six per centum per annum according to law until paid. Section S. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the '_ layor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cool: County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of theCity of Evanoton-on the 31st day of October A.D. 1922. Approved: Oct. 31st,1922. John F. Hahn, H.F. Pea rson's, City Clerk Mayor 17 r WOE�T3�ATI0 ESTIVATE AND ORDINUCE REC IE T ATIOTT BY BOARD OF LOCAL IMIROVEMENTS . To the Piayor and -Aldermen of the City of Evanston in the, City Council Assembled: We herewith submit an ordinance providing that nhe xoadway of Oakton Street; from the crest lot line of Ridge Avenue to the east lot lire of Asbury Avenue, also the roadway of interseoting street and alleys lying within said portion of said Oakton Street and not included in the roadway thereof, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, curbing with a Portland Cement Concrete Curb, paving with a bituminous macadam pavement ladi on a Portland Cement Concrete base or foundation, constructing catch basins, catch basin connections to surface drainage sewer, ad- justing catch basins, manholes, valve chambers and macadam paving adjoining and connecting with the proposed improvement; together with an estimate of the cost of said imDrovenent and recom2rend the passage of said ordinance and the naLinS of the improvement contemplated therein. Respectfully subvitted, H. P. Pearsons, Wt. Blanchard, Hal W. Smith. Board of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, Illinois. October 31, 1922. ESTIMATE OF ENGINERR OF BOARD OF LOCAL IlPROVI ENTS To the Mayor and Aldermen of the City of Evanston in the City :Council Assembled: The Board of Local Improvements of theCity of Evanston having adopted a resolution that the roadwy of Oakton Street, from the crest lot line of Ridge Avenue to the .east lot line of Asbury Avenue, also the roadway of intersecting street and alleys lying vdthin said portion of said OAkton Street and not included in the roadway thereof, in the City of Evanston, County of Cook, State of Illinois, be im proved by grading, curbing with a Portland Cement Concrete Curb, paving with a bituminous macadam Ri vement laid on a Portland Cement Concrete base or f _undati on, construct- ing catch basins, catch basin connections to surface drainage sewer, adjusting catch b asins, manholes, v ,lve chozr,bers and macadam paving adjoining and connecting with the proposed im- provement; and presented to the City Council of theCity of' Evanston a recommendation that said improvement be made, I here- with submit an estimate of the cost of said improvement as des- cribed in said resolution, including labor, material and lawful expenses attendii.g the proceedings for making said improvement and the cost of making and collecting the assessment, as provided by law, viz: ESTIMATE OF COST 22QQ Cu. yds. of grading @ $1.60 per cu. yd. $ 2800 Lin: ft. of,Portland Cement Concrete curb laid complete in place © $1.25 per !in. ft. 4500 Sq. ,yds. of Portland Cement Concrete base or foundation laid complete in place @ $1.80 per sq. yd. . 4500 Sq. yds. of bituminous macadam paving laid complete in place O $1.40 per sq. yd. . . 6 brick catch b asins including cast;iron covers, plank bottoms, excavation and back filling, complete in place @ $75.00 each . . 90 Lin, ft. of 9" internal diameter catch basin connections to surface drainage server, average depth of out six (6) feet, including trenching and back filling, laid com plete in place @ $1.00 per lin. ft . . 3,520.00 3,500.00 8,100.00 6,300.00 450.00 90.00 _"J 214 6 catch basins adjusted to grade @ $12.00 each . 72.00 4 manholes adjusted to grade @ $12.00 each . 48.00 2 valve chambers adjusted to grade @ $12.00 each 24.00 75 sqyds. of macadam paving adjusted to grade @ $1.20 per sq. yd. . . . . . . . . . . 90.00 For lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment therefor, not to exceed six (6) per centum of the above, to -wit: $22,194.00 . 1.331#64 Total $ 239525.64 And I hereby certify,that in my opinion the above estimate does not exceed the probable cost of the above proposed improvement and the lawful expenses attending the. same* Dated, Evanston, Illinois. October 31st.9 1922. 1m. Blanchard, Engineer of the. Board of Local Im- provements of the. City of Evanston. AN ORDINANCE Providing that the roadway of Oakton Street, from the west lot line of Ridge Avenue to the east lot line of Asbury Avenue, also the roadway of intersecting street and alleys lying within said portion of said Oakton Street and not included in the roadway thereof, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, curbing with a• Portland .Cement Concrete Curb, paving with a bituminous macadam pavement laid on a Portland Cement Concrete base or foundation, constructing catch basins, catch basin connections to surface drainage sewer, adjusting catch basins, manholes, valve chambers and macadam paving adjoin- ing and connecting with the proposed improvement. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvement shall be made within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local improve- ment is as follows, to -wit: I That the roadway of Oakton Street, from. the west lot line of Ridge Avenue to the east lot line of Asbury Avenue, also the roadway of intersecting street and alleys lying within said portion of said Oakton Street and not included in the roadway thereof, in the City of Evanston, County of Cook, State of ,Illinois, be and the same is hereby ordered .improved as follows: LOCATION OF ROADWAYS The center line of the roadways herein provided to be paved shall coincide with the center line..of the respective streets and alleys within which said roadways are included. WIDTH OF ROADWAYS The width of the roadways herein provided to be paved shall be as follows, measured in feet from back to back of the curb here- inafterispecified and .at right angles to the center line ,of the respective street or alley, as the case may be, to -wit: Roadway of Oakton Street: At. the west -line -of Midge Avenue • 30 feet At the east line of Asbury Avenue 30 feet Roadway of Barton Avenue: At the south line of Oakton Street 24 feet At the north line-of-Oakton Street 24 feet Roadway of intersecting alley one hundred seventy-five (175) feet west of Ridge Avenue: At the south line of Oakton Street 20 feet At the north line-of-Oakton Street 20 feet Roadway of intersecting alley one hundred 215 sixty-five (166) feet west of Barton Avenue: At the north.curb line of Oakton Street 20 feet At the north line of Oakton Street 20 feet The width of roadway at intermediate. points shall be respectively proportional to the f oregoing. GRADE. OF ROADWAY AND CURB The grade of the roadways herein provided to be paved, when finished, and the grade of the top of the curb hereinafter speci- fied, when completed and set in place, are hereby established as follows, measured in feet and decimal parts of a foot above the datum plane of the City of Evanston, to -wit: Crown Gutter Top of Transverse Section of Roadway. line line curb Oakton Street: At the west line of Ridge Ave. 37.25 36.90 37.15 At a point twenty-five (25) feet west of the west line of Ridge Av. 37.10 36.60 37.10 At a point fifty (50) feet west of the west line of Ridge Avenue 36.60 36.10 36.60 At a point seventy-five (75) feet west of the west line of Ridge Avenue 35.85 35.35 35.85 At a point one hundred (100) feet west of the west line of Ridge Avenue 35.10 34.60 35.10 At a point one hundred twenty-five (125) feet west of the west line of Ridge Avenue 34.50 34.00 34.50 At a point one hundred fifty (150) feet west of the west line of Ridge Avenue 34.00 33.50 34.00 At a point three hundred ten (310) feet east of the east line of Barton Av. 31.10 30.60 31.10 At a point two hundred eighty-five(285) feet east of the east line of Barton Avenue 130.85 30.35 30.85 At a point two hundred sixty (260) feet east of the east line of Barton Avenue 30.70 30.20 3 0.7 0 At a point one hundred (100) feet east of the east line of Barton Avenue 30.70 29.97 30.80 At the east line of Barton Avenue 31.00 30.55 30.80 At a point twenty-one (21) feet west of the east line of Barton Avenue 30.80 30.05 30.80 At a point twenty-one (21) feet east of the west line of Barton Avenue 30.80 30.05 30.80 At the west line of Barton Avenue 31.02 30.57 30.82 At a point seventy-five (75) feet west of the west line of Barton Avenue. 30.91 30.16 30.91 At a point one hundred seventy-five (175) feet west of the west line of Barton Avenue 31.20 30.75 31.00 At a point one hundred(100) feet east of the east line of Asbury Ave rrae 31.09 30.34 31.09 At the east line of Asbury Avenue 31.40 30.95 31.20 Barton Avenue: At the north line.of Oakton St. 31.15 30.70 30.95 At the south line of Oakton St. 31.15 30.70 30.95 Alley one hundred seventy-five (175) feet west of the west line -of Ridge Avenue: At the south line of Oakton Street 34.35 33.90 34.15 At the north line of Oakton Street 34.35 33.90 34.15 Alley one hundred sixty-five (165) feet west of the west line of Barton Avenue: At the north line of Oakton St. 31.70 31.25 31.50 rM A d-% The grade of the crown line, gutter line and top of curb at intermediate points shall be respectively proportional to the foregoing. The datum plane hereinafter mentioned is the plane of low water mark of Lake Michigan in the year A. D., 1847, as established by the Trustees of the Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the north-west corner of Davis Street and Sherman Avenue, in said City of Evanston. The crown line hereinbefore mentioned shall be identical with the center line of the respective road- ways when completed. The gutter line hereinbefore mentioned shall be identical with the line where the surface of the road- ways when completed touches the face of the curbing on both sides of the respective roadways. The surface of the roadways herein provided to be paved when completed shall conform to the arc of a circle passing through the respective crown and gutter lines, and shall be true and symmetrical. GRADING Prior to laying down the pavement thereon, the roadways specified to be paved shall be cleaned in a thorough and -k4 rkmanlike manner of all debris and rubbish, such as deteriorated pavements, crossings, box drains, culverts,nstumps, etc. The sub -grade shall be prepared by excavating the soil, or filling thereupon with other and suitable soil to such depths and shapes as will insure the finished pavement being at the grade established therefor. Spongy earth that is unfit to be left in the sub -grade shall be removed by the con- tractor without extra charge. The sub -grade shall be rolled with a suitable self-propelling roller or flooded with water, or both as may be found necessary and practicable to thoroughly compact same. Any depressions that may appear as the rolling or flooding of the sub -grade progresses shall be filled upon at the surface with suitable soil and thoroughly comr pacted as before specified. CONCRETE CURB A concrete curb shall be constructed on both sides of the respective roadways herein provided to be paved. Said curb shall consist of a mixture, by volume, of one part of Portland cement, two parts of sand and four parts of crushed gravel or stone. Except that the top and exposed roadway face of the curb shall be surfaced to a depth of one-half inch with a mortar composed of two parts of Portland cement and three parts of clean, sharp sand of the sizes and quality hereinafter specified for the sand to be used in making this curb. The crushed gravel or stone specified for the body of the curb shall be clean, hard, free from dust, loam, vegetable or other deleterious matter, and shall show sharp.edged cubical fracturing. This crushed gravel or stone shall be of variable sizes, grading from a maximum dimension of one inch down to a minimum of one-fourth inch, and so proportioned that the particles capable of passing through a screen of three -fourths inch mesh will fill the voids in the particles retained on such size screen, but without more than ten per cent excess of the smaller particles. The sand specified for the curb shall be free from clay, loam, vegetable or other deleterious matter. The grain shall be angular, and shall range in size from one -quarter inch down to the finest, but not more than 3 per cent shall pass through a seive having (100) one hundred meshes per lineal inch. The sand shall be of such quality that mortar composed of one part of the cement hereinbefore specified and three parts of the sand, by weight, when made into briquetts, will develop a tensile strength at least equal to the strength of a mortar of the same consistency and proportions made with the same cement and Standard Ottawa sand. The Portland cement specified for the curb shall be of such quality that representative samples collected form the shipments made for the job shall be capable of passing the tests for fineness, soundness, initial setting, and tensile strength hereinafter set forth for Portland cement. The sand and crushed gravel or stone shall be clean when delivered on the job and shall be kept clean until used. In no case shall the sand and crushed gravel or stone when used, contain frost or lumps of froz- en matter. Forms shall be used in constructing the curb. The forms shall be sound, free from warp, and of suffici- ent strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established lines and grades. Wooden forms shall be thoroughly wetted and metal forms shall be oiled be- fore concrete is deposited against them. All mortar and dirt shall be removed from forms that have pre- viously been used. The ingredients specified for the body of the curb shall be mixed in a batch machine mixer of a type that will insure a uniform mixture and product. Clean water, free from oil, acid, alkali, or vegetable matter shall be admitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the crushed gravel or stone from the mortar. Provided, that on such portions of the work as it may be imprac- ticable to use the machine mixer, thorough and efficient hand mixing will be allowed. The equipment used, if any, for hand mixing shall be as specified for mixing the surfacing mortar. The ingredients specified for the mortar to be used in surfacing the top and exposed roadway face of the curb shall be mixed on a movable, tight iron platform, of ample size ,to accommodate the manipulations specified, without getting the ingredients off the platform or mixed with dirt. 11t9198- 1 The Portland cement and sand specified for surfacing portions of the curb shall be thoroughly mixed on the platform with hoes or shovels, and until the color becomes uniform, after which sufficient water, of the quality hereinbefore required, shall be gently added, while the mixing continues, to produce a stiff and homogeneous mortar. The concrete and the finishing mortar after being prepared as specified shall be promptly deposited and compacted in the forms, in layers not exceeding six inches in depth. The back of the curb shall be worked with a spade to secure a well filled surface. The front upper edge of the curb shall be rounded to a radius of one and one-half inches in such manner that the planes of the top and roadway face of the curb will be tan- gent to the curve described by said radius. As soon as the cement has sufficiently set, the forms shall be re- moved from the face of the curb; and the face mortar shall be promptly troweled down hard and smooth, drawing the cement from the crushed gravel or stone as little as possible. The gloss shall be removed with a vet brush. The curb shall be constructed in sections not less than four feet nor more than six feet in length. In con- structing the curb, all templates used to form the sections shall be kept perpendicular to the top of the curb. All joints shall be neatly tool finished. The joint marking shall correspond to the joint made by the tem- plates. The curb shall be twenty-four inches in depth, and the thickness shall vary uniformly from six inches at the top to eight inches at the bottom of the curb. The curb shall be built in such manner that the road- way face will he vertical; that the t op will be at the grade hereinbefore established; and that the back of the curb, at the top thereof shall be on the lines hereinbefore established. The curb at intersecting streets and alleys shall be constructed to true curves tangent to the intersecting curb lines proper. The radius of the curve to which the back of the curb shall conform shall be ten feet for intersecting street and six feet for intersecting alley curb lines. Except as above specified, for intersecting street and alley curb lines, the curb shall be constructed paralleled to the center line of the respective road- ways herein provided to be paved. The curb shall be constructed at such distances from the center line of the roadways, herein provided to be paved, as will give the respective width of roadways hereinbefore speci- fied and established, when measured from back to back of curb in the manner and on the lines hereinbefore set forth. Trenches shall be excavated to sufficient width and depth to receive the curb and necessary moulding frames. Wherever other than sandy soil is encountered the curb trenches shall be excavated to a depth of six inches below the bottom of the curb and shall be re -filled to such depth with sand or cinders. The sand or cinders shall be compacted with water or by hand tampers. The frames shall be securely fastened in place and shall be accurately brought to line and grade before they are filled with concrete. The grade and line to which the frames are to be set shall be such as is necessary to insure the finished curb being true to the lines and grades hereinbefore established therefor. PORTLAND CEMENT CONCRETE FOUNDATION Upon the sub -grade prepared as hereinbefore specified, shall be constructed a Portland cement concrete base or foundation, five (5) inches thick. The concrete shall be composed by volume, of one (1) part of Portland cement; three (3) parts of clean, hard grained, and sharp sand; and five (5) parts of clean, hard limestone or gravel broken or graded so as to yield a range of sizes (in longest dimension) from two (2) inches down to one-half (1-2) inch, and so proportioned as to produce a maximum number and minimum volume of interstices in the aggregate. The concrete shall be prepared by mixing the cement, sand and stone or gravel in an approved batch mixer with sufficient clean water and mixing sufficiently to produce a plasticity best suited to the condi- tions of weather and soil. The concrete mixed as above specified, shall be promptly spread on the surface of the sub -grade to the required thickness, and to such shape and grade as will insure the upper surface of the foundation after be- ing thoroughly compacted by rolling or tamping, being parallel with and three (3) inches below the grade hereinbefore specified for the finished roadway. The upper surface of the foundation shall not be troweled smooth but shall be left moderately rough to grip the bituminous macadam pavement specified to be laid thereon. 218 BITUMINOUS MACADAM PAVEMENT Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard, broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of three (3) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be evenly applied to the limestone ( at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one and three quarters (1 3-4) gallons thereof being evenly spread on and used in each and every square yard of the roadway, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size rang- ing from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diam- eter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screen- ings the roadway so covered, shall be given a thorough rolling with a roller of the weight and type herein - before named. This rolling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the roadway shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be evenly applied to the surface of the pavement a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread as to insure not less than three quarters (3-4) gallon thereof being evenly spread and used on each and every square yard of road- way. Immediately after the second application of asphaltic cement is made and spread and progressing therewith there shall be evenly spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one - eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of the roadway. A final rolling of the roadway shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the roadway is thoroughly compacted, and brought to a surface, free from de- pressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement herein provided to be built, shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The gutters shall be kept trimmed to the required thickness and grade as the work progresses. The cubic yardage of stone, herein required, shall be verified by measurement of volume thereof in cars, or other conveyances, transporting same to said City, and prior to initial unloading, and shall be fur- ther verified by measured length of dumps and height of grade marks on the work. The stone shall be hauled on to the work in boxes of uniform size and contents and of such shape as to enable an easy and exact determination of the volume contained therein to be made on the site. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following require- ments and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural as- phalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical 919s 2$9 BITUMINOUS MACADAM PAVEMENT; properties and be so prepared for use as to best adapted to the climatic and traffic conditions of the roadway i on which it is to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit un- der 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be pres- ent in homogeneous solution, no granular constituent being present. (5). It must not flash below 360 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95%. (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98 /% shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in 75 degrees Baume petroleum naptha, at the air temperature to the extent of not less than 72 per cent. (10)., Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. CATCHB ASINS For the purpose of receiving storm waters from the surface of the roadway or roadways, as the case may be, herein provided to be paved SAX ' catchbasins shall be constructed at the necessary points along the sides of the afore- said roadway or roadways. Said catchbasins shall be constructed of hard burned sewer brick and, placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catchbasins, when in place, to the upper surface of the proposed curbing. Said catchbasins shall be cylindrical in shape having an internal diameter of forty-two (42) inches at the bottom and upward to the lowest header course, being unifornily drawn in to twenty- four (24) inches at the top of the masonry by means of eight (8) header courses of brick laid endwise and horizon- tally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catchbasins. Said catchbasins shall have walls eight (8) inches thick, built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catchbasins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1%) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch - basins shall each rest on a solid bottom of two (2) inch pine planks laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure sixty (60) inches in diameter and shall have its upper si(le placed five and one-half (5/) feet below the upper surface of the brick wall for said catchbasins. Said catch - basins shall be connected with the sewer or sewers, as the case may be, now existing or herein provided to be con- structed, as the case may be, in and along the center line of the said roadway or roadways at the side of which the respective catchbasins are to be constructed. Said catchbasins shall be connected with the sewer or sewers aforesaid i by means of vitrified, salt.glazed, tile pipe having an internal diameter of nine (9) inches and of the type known as "Bell and Spigot" the metal of which pipe shall be thirteen -sixteenths (13/16) of an inch in thickness and shall be not less than two (2) feet in length. Said pipe shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipes shall be securely sealed with a mortar of the quality herein required for brick walls in catch -basins. Each catchbasin connection shall start in a nine (9) inch vitrified, salt glazed, tile pipe "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the sewer at a point not less than six (6) feet in advance of the catchbasin, measured along and in the downstream direction of the sewer from a point on said sewer directly opposite the catchbasin. The pipes shall be laid true to line and grade and the connection shall enter the catchbasin at a point two and one-half (2/) feet above the plank bottom. The pipe entering the catchbasin through the brick walls thereof shall be an elbow with the bell end turned downward inside the catchbasin to form a trap. i The pipe shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exferior i. 1 6 4 1 learance on both sides of the pipes for sealing the joints. diameter of the pipes so as to give. at east sip. ( ) me ies c The materials excavated shall be kept compactly along the sides of the trenches and shall be backfilled as soon as prac- ticable in order.to occasion the least possible inconvenience to the public in use of the street. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the tqp of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catchbasins shall each be equipped and fitted with a castiron cover weighing not less than three hundred thirty (330) pounds and having a vertical height of thirteen (13) inches, which cover shall be of the same size and pattern or equal in size, quality and workmanship to the castiron covers now in use on existing catchbasins in Dempster Street between Ridge Avenue and Dodge Avenue in said City of Evanston. Said catchbasin covers herein provided to be furnished and set shall rest on the walls of the catchbasins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catchbasins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the elevations hereinbefore specified for the top of the curb at the points where said catchbasins are to be located. MANHOLES TO BE ADJUSTED AND BROUGHT TO GRADE The 4 brick manholes now located within the space herein provided to be paved, and which are already equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said manholes as may be necessary to bring the covers of the manholes to the height above specified and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one- half (1/) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. VALVE CHAMBERS TO BE ADJUSTED AND BROUGHT TO GRADE The 2 brick valve chambers now located within the space herein provided to be paved, and which are already equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said valve chambers as may be necessary to bring the covers to the height above specified, and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a mortar, composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 1-2) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the -kind and quality required for use in adjusting said walls. CATCH BASINS TO BE ADJUSTED AND BROUGHT TO GRADE The 6 brick catch basins now located along the sides of the roadway or roadways, as the case may be, herein provided to be paved, shall have their covers raised or lowered as the case may be in such manner as to bring the tops thereof to the surface of the adjacent ground. , Such adjustments as may be necessary shall be made to the walls of said catch -basins with hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1%) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. Said covers shall be imbedded in mortar of the quality hereinbefore specified in adjusting said walls. Said catch -basins shall be connected to the curbs by means of sewer pipes of the kind, size and quality and laid in the manner hereinbefore specified for pipe used in constructing surface drainage sewers. Openings shall be made in curbs at points of said connections in such manner as to permit free and un- interrupted passage of storm waters, from the surface of the pavement hereinbefore specified, to said basins. IZ 0198 ADJUSTMENT OF PRESE11T MACADAM PAVING 221 The present macadam paving where the'same adjoins the proposed improvement shall be adjusted in such manner that after having been excavated or filled uppn, as the case may be. -with materials of kind and qual.�ty composing said macadam paving and having been thoroughly compacted it shall form_ a base or founda- tion for a bituminous macadam pavement to be placed. thereon. The 'upper surface of said. base or foundation. when.. completed shall be two (2) inches below the finished grade of the. proposed improve- ment where same adjoins said macadam paving. Upon the base or foundation, prepared as hereinbef ore specifi-ed, there shall be spread a layer of clean, hard broken limestone ranging in size from a maximum -dimension of two inches to a minimum. dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of two (2) inches thereof being spread on and used in each and • every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an} initial.. rolling with a self propelling road roller weighing not less than -ten tons. The initial rolling shall. end.as soon as the . stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone- is. fini- shed, and the layer thereof is dry, there- shall be applied to the limestone (at a temperature -not less than.. 250 nor more than 275 degrees -Fahrenheit) an asphaltic cement. in. such quantities as. to insure not less than -one (1) gallon thereof being evenly spread on and used in each and every square yard -of paving, in addition to the squee-gee or second. application coat hereinafter required. Immediately after, and. progressing. with, the application of asphaltic cement- hereinbef ore required, the, surface towhich the s eene shall have been applied shall be uniformly covered with dry and hard limestone. screenings, free -from clay, loam, dust, vegetable or other deleterious sub*stanees, and broken to a size ranging from the largest particle that would pass through- a sieve having circular holes three -fourths.. inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diameter. The -limestone screenings -shall be used is sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following t.Le spreading of these. limestone screenings the paving so. covered, shall be given a thorough. rolling with a roller. of the weight and type hereinbef ore named. This rolling shall continue_ until the screenings are driven into, and -thoroughly bonded with, the layer of stone to which same is applied. The- surface of the paving shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon-*- After being so cleaned there shall be applied to the surface a s eci nd- applicati on- of asphaltic. cement of the same_ kind and wuality as that used in the first application. This second application. shall be sufficient in quantity and so ap lied and spread, as to insure not less than three-quarters �(3 4) gallon thereof being evenly spread and used. on. each. and every square yard of paving. Immediately after the second application of asphaltic cement is made and spread (and progressingtherewith) there shall be spread on the surface of the roadway so treated, clean dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such. quantity and manner as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each, and every square yard of paving. A final rolling of the paving shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinb.ef ore named. The final rolling shall continue until the surface of the pavement is thoroughly compacted, and brought to a surface, free from de- pressions -and true to form and grade. 222 Any and all depressions developing during progress of the rolling, required in process of constructing the pavement shall befilled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples colleQted from shipments thereof shall. be capable of -meeting the follovring requirements and of passing, the following tests, to -wit: (1) The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural asphalt and a flux. to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be• similar in character to that used successfully in.the..construction of sheet asphalt pavements, and shall possess such chemical and physical properties and. be so prepared for use as to best adapt it to the climatic and traffic con- ditions of the roadway on which it is to be used. (2) Its specific gravity shall be greater than.980 at 77 degrees Fahrenheit. (3) It must have a penetration between-5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and. must not be harder than one millimeter penetration at 32 degrees Fahren- heit under 200 grams for one minute. . (4) It shall be practically free -from water, decomposition products, coke or inert free carbon, coal tar or,any of its products, or other injurious matters, and -the various hydrocarbons composing it shall be present in homogeneous solution, no.granular constituent being present. - (5) It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6) 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches -in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7) It shall be e oluble in chemically pure carbon . disulphide at air temperature to the extent of at least .95%. (8) Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98jJ shall be soluble in cold carbon tetrachloride. (9) The bitumen of the cement shall be soluble in petroleum naotha, at the air temperature to the extent of not less than 72 per cent. (10) Upon ignition, the bitumen of the cement shall yield hot less than 9 per cent n.or more than 15 per cent of fixed carbon or residue coke. %1t9198 223 MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to. be made shall be sharp. and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used.' PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit. Fineness. The cement shall be so ground that 927o will pass through a standard sieve, having 10,000 meshes and 75% will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours., and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) .................................. 275 lbs. The briquettes shall show no retrogression in strength within the .period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. 224 SEWER PIPE The tile ,pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said Spipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of thirteen hundred thirty-one and sixty-four hundredths dollars ($ 1,331.64 )� being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of thirteen hundred thirty-one and sixty-four hundredths dollars ($ 1,331.64 )� shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into 10 installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section i. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps maybe taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council Evanston on the 31st day of 1922, John Approved: Oct. 31st, 1922. H.P. Pears ons , Mayor of the City of October A.D. F . Hahn, City Clerk. 1z][9198 225 RECOMMENDATION, ESTIMATE AND ORDINANCE RECOWNDATION BY BOARD OF LOCAL IMPROVrMENTS To the Mayor and Aldermen of the City of Evanston in tj,e City Counc it Assembled: We herewith submit an ordinance providing that a six inch (6) cast-iron water main, including necessary fire hydrants, valves, vavle chambers and special fittings be laid in the following streets in the City of Evanston, County of Cook, State of Illinois, viz: in Lyons Street, from and connecting with the cast iron water main now in place in HARTERY AVENUE, at a point eight (8) feet east of the center line thereof to a point eight (8) feet east of the center line of LAUREL AVENUE, in LAUREL AVENUE, from and connecting with cast iron water main herein provided to be laid in LYONS STREET at a point twenty-five (25) feet south of the north line thereof to the south line of EMERSON STREET; together with an estimate of the cost of said improvement and recommend the passage of said ordinance and the making of the improvement contemplated therein. Respe ctfully submitted, H.P. Pears.ons, Wm. Blanchard, Ha1W..- Smith. Board of Local Improvements of the City of Evanston, Illinois: Dated, Evanston, Illinois. October 31, 1922. ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEMENTS _ To the Mayor andAldermen of theCity of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that a six (6) inch cast Aron seater main,, including necessary -fire hydrants, valves, valve chambers and special fittings be laid in the following streets in the City of Evanston, County of Cook, State of Illinois, viz: in LYONS STREET, from and connecting with the cast iron water main now in place in HARTERY AVENUE, at a point eight (8) feet east of the center line thereof to a point eight (8) feet east of the center line of LAUREL AVENUE, in LAUREL AVENUE, frpm and connecting with cast iron water main herein provided to be laid in LYONS STREET at a point twenty-five (25) feet south of the north line thereof to the south line of EMERSON STREET; and presented to the City Council of the City of Evanston a recommendation that said improvement be made, I herewith submit an estimate of the cost of said improvement as described in said resolution, . including labor, material and lawful expenses attending the proceedings for making said improve- ment and the cost of making and collecting the assessment, as provided by law, viz: ESTIMATE OF COST 1080 lin* ft. of 6 in* internal diameter cast iron water main (average depth of cut 6f feet) including trenching and back. filling, also including cutting in and placing one 10 x 6 cast iron Tee in the cast iron water main now in place in Hartrey Avenue, complete in place ® $2.65 per lin. f t. . . : $2,862.00 2 Fire hydrants including necessary connections to water main, gate halves and cast iron valve boxes, also including excavation and back filling complete in place @ $125.00 each 250.00 .2 Six (6) inch valves including brick valve chambers cast iron covers, excavation and back filling complete in place @ $85.00 each 170.00 650# of special fittings ® 10X per lb. . 0 65.00 226For lawful expenses attending the proceedings for making said improvement and the cost of making and collectin the assessment therefor, not to exceed six per centum (611 - of the above, to -wit: ,#3,347.00 200.82 Total 3,547.82 And. I herebycertify that in my opinion the above estimate does not exceed the probable cost of the. above proposed. improvement and the lawful expenses attending the. same. Dated, Evanston, Illinois. October 31, 1922. Wm. Blanchard, Engineer of the Board provemen.tsof the City AN ORDINANCE of Loc al Im- of Evanston Providing that a six (6) inch cast iron water main, including necessary`fimhydrants, valves, valve chambers and special fittings be laid in the following.streets in the City of Evanston, County of Cook, State of Illinois, via: in LYONS STREET, from and connecting with the cast iron water main now in place in HARTREY AVENUE, at a point eight (8) feet east pf the center line -thereof to a point eight (8) feet east of the center line of LAUREL AVENUE, in LAUREL AVENUE. from and connecting with the -cast iron water main herein provided to be laid in LYONS STREET at a point twenty-five (25) feet south of the north line thereof to the .south line of DIERSON STREET. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvement shall be made within the City of Evanston, County of Cook, State of Illinois, the nature- character, locality and description of which local improve- ment is as follows-, to -wit: A six (6) iX/Ch cast iron water main, including necessary fire hudrants, valves, valve chambers and special. fittings shall be,. laid in the following streets in the City of Evanston,,County of Cook, State of Illinois, viz: in LYONS STREET, from and connecting with the cast iron water main now in place in. HARTREY AVENUE, a t a point eight (8) feet east of the center line thereof to a: point eight (8) feet east of the center line of LAUREL. AVENUE, in LAUREL AVENUE, from and connecting, with cast iron water main. herein provided to be laid in LYONS STREET AT A POINT Twen ty-five (25) feet south of the north- line thereof to the south line of Emerson Street. t ALIGNMENT The cast iron water main herein provided to be laid in LYONS STREET shall f oll ow a line wren ty-f iv a (25) feet south of and parallel with thenorth line thereof*, This cast iron water main shall connect with the cast iron water main now in place in HARTM AVENUE. The cast iron water Main herein rovided to be laid in LAUREL AVENUE shall follow a line eight (8� feet east of and parallel with the center line thereof. This cast ironw ater main shall connect with the cast iron water main herein provided to be laid in LYONS STREET. SIZES The inside diameter of the cast iron water main herein �6) rovided to be laid in LYONS STREET and LAUREL, AVENUE shall be six inches. . in GRADE The grade or elevation of the top of the cast iron w ater mains herein provided too be laid, when completed in place, is hereby established as follows, measured in feet and decimal parts of a foot above the datum plane of said City of Evanston, to -wit: Cast iron water main, in Lyons Street: A At eight (8) fee t- east of the c enter - 1 ine of Hartrey Avenue 11.80 At eight (8) feet east of the center line of Laurel Avenue. 12.50 Cast iron hater main in Laurel Avenue: At twenty-five (25) feet south of the north line of Lyons Street. 12.50 At the south line of Emerson Street. 12.85 The grade of the top of the main at intermediate points shall be respectively proportional to the foregoing. . DATUM PLANE The datum plane hereinbefore mentioned is the plane of low water mark of Lake Michigan in the year A. D. 1847 as established by the Trustees of Illinois and Michigan Canal, and is 22.41 feet below the U. S. Geo- logical Survey Bench Mark on the north side of the Sherman Avenue entrance to building known as City Hall, located at the north-west corner of Davis Street and Sherman Avenue, in said City of Evanston. EXCAVATION AND BACK FILLING The ground shall be excavated in open trenches. The trenches shall be at least eighteen inches wider than the exterior diameter of the pipes so as to give at least nine inches clearance on both sides of• the pipes for caulking the joints and setting special fittings. Excavations shall be made under the bell of each pipe so that the entire length of the pipe shall rest upon the bottom of the trench and be at the grade hereinbefore specified. The materials excavated shall be kept compact so as to occasion the least possible inconvenience to the public use of the street. The trenches shall be promptly back -filled to a depth of twelve inches above the top of the pipes. Sand or other suitable earth shall be carefully packed under and around the pipes. In no case from the commencement to the termination of the work, shall more than five hundred feet of trench be opened in ad- vance of the completed back -filling. Any and all pavements or crosswalks disturbed in the performance of the work shall be restored to a condition as safe and serviceable as before being disturbed. Free access shall be left to all fire hydrants and water gates. Provision shall be made for the flow of sewers, drains, or water courses disturbed during the prog- ress of the work. PIPES The pipes used in constructing the water main herein provided to be laid shall be coated bell and spigot, made in twelve -foot lengths, straight, cylindrical, smooth, free from cracks, sand holes and other imperfections of castings. The metal shall be of the best quality of cast iron used for the purpose and shall be uniform in thick- ness. The dimensions, thickness of metal and weight of the pipes and special fittings hereinafter specified shall be sufficient to insure the pipes and joints being capable of securely withstanding an internal hydraulic pressure of one hundred and fifty pounds per square inch. The spigots shall be concentrically placed inside the bells. All joints between the pipes, and fittings used in connection with the improvement herein provided to be made shall be closely fitted and thoroughly caulked. Said caulking shall consist of the best quality, for the purpose, of untarred rope yarn and soft caulking lead. Sufficient yarn shall be used to leave a depth of not less than two and one -quarter inches for lead in the bell after the yarn has been, as it shall be, well packed. After the yarn has been packed, as specified, molten lead shall be promptly poured into the remaining bell space in sufficient quantity to stand flush with the outside of the bell after the lead has been, as it shall be, thoroughly compacted with caulking hammer and tools. Before pouring the lead the joints shall be carefully wined out to make them clean and dry. The lead space shall be run full at one pouring. FUZE HYDRANTS. Fire hydrants shall be furnished and set at the points hereinafter specified and shall be connected, in the bast workmanlike manner, with the water main, herein provided to be laid, by means of six-inch cast iron pipes and fittings of the quality bereinbefore specified. Said hydrants shall be of the same pattern, or equal in duality and workmanship to, the cast iron body, bronze mounted, rubber faced gate type of fire hydrants in use on Lake Street between Dodge Avenue and Hartray Avenue in said City of Evanston. Said hydrants berein provided to be furnished and set shall open by turning to the left, and shall be provided with one four -inch steamer nozzle and two, two and one-half inch hose nozzles, matching threads of the Fire Department of said City, and shall have, at or near the foot of said hydrants, a secondary double gate valve equipped with a cast iron valve box. Said secondary valve shall be of the same pattern, or equal in quality and worialrbRtI the secondary valves on the existing fire hydrants aforesaid. Said cast iron valve boxes shall be I ZckyjaWeet in length and five inches in internal diameter, and shall be of the same pattern, or equal in quality and workmanship to, the adjustable cast iron valve boxes now in use on the existing fire hydrants aforesaid. six (6 ) The length of the hydrants herein provided to be furnished and set shall be feet from ground line to bottom of connecting pipe. The diameter of the seat ring or main valve opening of said hydrants shall be not less than four inches. The inside diameter of the stand pipe, or hydrant barrel, shall be not less than five and three-fourtbs inches. The hydrants herein provided to be furnished and set shall be placed at the following points, to -wit: On a line fifteen (15) feet west pf the east line of Laurel Avenue: One at a point ten (10) f eet north of the north line of Lyons Street. One at a point ten (10) feet south of the south line of Emerson Street. VALVES AND VALVE CHAMBERS. The water main herein provided to be laid shall be equipped with valves and valve chambers complete to . be located at the points hereinafter specified. Said valves shall be of the same pattern, or equai in quality and workmanship to, the cast iron body, bronze mounted, double gate valves now in use on the water main and within the existing valve chambers in Lake Street, from Dodge Avenue to Hartray Avenue, in said City of Evanston. Said valves shall open to the left and shall be set on and connected with the water main herein provided to be laid and within brick valve chambers to be constructed as follows: — Said vale chambers shall be cylindrical in shape, having an internal diameter of the dimensions herein- after set forth, at the bottom and upward to the loweEt header course, being drawn in at the top of the ma- sonry by means of twelve header courses laid endwise and horizontally, the diameter being decreased uniform- ly by each course, to twenty-four inches to fit the iron covers below specified. Said vale chambers shall have walls eight inches thick built of two courses of hard burned sewer brick placed, except as above specified for hNevLAtiffs, edgewise and in perpendicular courses and laid in mortar composed by volume of one part of ]>]4#34X}i7d3iaXflQc cement of the best quality and one and one-half parts of clean, coarse, sharp grained sand, containing no particles larger than would pass through a sieve of one -eighth inch mesh. The walls of said valve chambers shall start nine inches below the bottom of the water main. The joints in the brick work shall be neatly pointed. five Said Ave chambers shall each be equipped and fitted with a cast iron cover weighing not less than fit+ hundred etAV-.Uen pounds, which cover shall be of the same pattern, or equal in quality and workmanship to the cast iron valve chamber covers now in use on existing valve chambers in Lake Street, from Dodge Avenue to Hartray Avenue, in said City of Evanston. Said valve chamber covers herein specified to be furnished and set shall rest upon the walls of said valve chambers herein provided to be constructed, which walls shall be built to such -height as will bring the top of the covers, when set in place, three inches below the surface of the street. The location of the valve chambers herein provided to be constructed, referring to the vertical axis thereof; the size, or inside diameter of the seat ring, of the valves herein specified to be furnished and set, measured in inches; and the inside diameter of the last above mentioned valve chambers, measured in feet and decimal parts of a foot, at the bottom and upward to the lowest header course shall be as follows, to -wit: Location of Valves and Valve Chambers. Size of Diameter of Vales. Valve Chambers. On a line twenty-five (25) feet • south of the north line of Lyons Ste One at a point five (5) feet west of the west line of Hartrey Ave. 6" 4 fto On a line eight (8) feet east of the center line of Laurel Avenue: One at a point five (5) feet south of the south line of Emerson Ste 6" 4 ft e SPECIAL FITTINGS The water main herein provided to be laid shall be equipped with cast iron special fittings of the quality hereinbefore specified; the location, size of inside diameter in inches, and class of which fittings shall be as bielow specified. The unconnected or open ends of all pipes and special fittings required on the improvement herein pro- vided to be made shall be closed with cast iron plugs of the quality hereinbefore specified. Any and all crosses or tees required on said improvement shall have bell ends. Location of Special Fittings. Size. Class. On a line twenty-five (25) feet south of the north line of Lyons Street: At a point eight (8) feet east of the center line of Hartrey Avenue, 10" X 10" a 6" Tee At a point eight (8) feet east of the center line of Laurel Ave. 6" Cro s s IZ1919S- 229 All the material used in the construction of the impnovement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance ;hall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. .That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of two hundred and eighty—two hundredths dollars ($ 200.82 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of two hundred and eighty—two hundredths dollars ($200.82 ) shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into five installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section i. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are 'hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 31st day of October A.D. 1922. Approved: Oct. H.P . 31st., 1922. Pearson$, Mayor. John F. Hahn, City Clerk. 230 RECOMIENDATION, ESTIMATE AND ORDINANCE RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: We herewith submit an ordinance providing that a combined storm water and house drainage sewer be constructed of vitrified, salt glazed, tile pipe, including necessary brick manholes and catch basins, in Laurel Avenue, in the City of Evanston, County of Cook, State of Illinois, from and connecting with the sewer now in place along the center line of Emerson Street, south to the north line of Lyons Street; together with an estimate of the cost of said improvement and recommend the passage of said ordinance and the making of the improvement contemplated therein. Respectfully submitted, H.P. Pearsons, Wm. Blanchard, Hal W. Smith. Board of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, Illinois. October 31, 1922. ESTIMATE OF ENGI BEER. OF BOARD OF LOCAL IMPROVEWWTS . To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that a combined storm ira,ter and house drainage sewer be constructed of vitrified, salt glazed, tile pipe, including necessary brick manholes and catch basins, in Laurel Avenue, in the City of Evanston, County of Cook, State of Illinois, from and connecting with the sewer now in place along the center line of Emerson Street, south, to the north line of Lyons Street; and presented to the City Council of the City of Evanston a recommendation that such improvement be made, I here- with submit an estimate of the cost of said improvement as des- cribed in said resolution, including labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting -the assessment, as provided by law, viz: EST33LATE OF COST 700 lins f t. of 12 inch internal diameter, the pipe sewer, average depth of cut twelve (12') feet, in- cluding trenching and back filling,laid complete in place @ $2.50 per lin. ft. . .. . . . $ 1,750.00 4 brick manholes including cast iron covers, excavation _ nd. back filling, complete in place @ $85.00 each . . . . . . . . . . . 340.00 6 brick catch basins including cast iron covers, plank bottoms, excavation and back filling, complete in place 40 $85.00 each 0 0 . . . 510.00 For lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the -assessment therefor, not to exceed six per c entum (61) of the above, t o-wit : $2, 600.00 . ,156.00 Total 2,756.00 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improvement and the lawful expenses attending the same. Wm. Blanchard, Engineer of the Board of Local Im- pr o vem ent s of the City of Evans tD n. Dated, Evanston, Illinois. October 31st, 1922, IZ19198 AN . ORD 12UNCE 231'' Providing that a combined storm water and house drainage sewer. be constructed of vitrified, salt glazed, tile pipe; including neces- sary brick manholes and catch, basins-, in Laurel Avenue, in the City of Evanston, County. of Cook, State of Illinois, from -and con- necting with the sewer now in place along the center line of Emerson Street, south, to the north line of Lyons Street. BE -IT ORDAINED BY THE.. CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvement shall be made within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of thich local improvement is as follows, to -wit: That a combined storm water and house drainage sewer made of vitrified, salt galzed, tile pipe shall be constructed in and along the center line of Laurel Avenue from and connecting vrith the sewer now in place along the center _line of Emerson Street, south to the north line of Lyons Street. This sewer shall be connected with the sewer- now in place along the center line of Emerson Street. The internal diameter of this sewer shall be twe; ve. (12) inches. The metal of said pipe shall have a thick- ness of not less• than one (1) inch. The elevation of the bottom of the inside of this sewer at its connection with the serer now in place along the center line of Emerson. Street shall be five (5) feet above the datum plane hereinafter defined And the grade thereof shall rise thence at a uniform rate to an elevation of seven and one-half (7-J) feet above said datum at the north line of Lyons Street. DATUM PLANE The datum plane hereinbef ore mentioned is the plane of low water mark of Lake Michigan in the year, A.D. 1847 as estab- lished by the Trustees of Illinois -and Michigan Canal, and is twenty -tyro and forty-one hundredths (22.41) feet below the U.S. Geological Survey. Bench Mark on the north side of the Sherman Avenue entrance to building known as City Ha7,1, located at the north-west corner of Davis Street and Sherman Avenue in said City of Evanston. EXCAVATION AND BACK FILLING The ground shall be excavated in open trenches. The !drenches shall be at least twelve inches wider than the exterior diameter of the pipes so as to give at least six inxhes clearance on both sides of the pipes for sealing the joints and setting and closing Y branches. The materials excavated shall be kept compact and shall be backfilled as soon as practicable,. in order to occasion the least possible inconvenience to the public in use of the street. The trenches shall be promptly back -filled to a depth of twelve (12) inches above the top of the pipes. The soil shall be carefully packed under and around the pipes. In no case from the commencement to the termination of the work shall more than five hundred feet of trench b e opemed in advance of the completed back -filling. Any and all pavements or corsswalks disturbed in the performance of the work shall be restored to a condition as safe and serviceable as before being disturbed. Free access shall be left to all fire hydrants and water gates. Provision shall be made for the flow of sewers, drains or water courses- distrrbed during the progress of the work. BRICK All brick used in the improvement herein provided to be made shall be hard burned sewer brick of the best quality. The brich shall be moistened shortly before being -laid in the work. CEMENT All cement used in the improvement herein provided to be made shall be Portland cement of the best quality. The cement shall be carefully protected from moisture, freshly mixed for the work in hand, and shall be used before initial setting has occured. SAND All s and used for mortar in the improvement herein provided 32 to be made shall be clean, coarse and sharp grained; contain- ing no particles larger than would pass through a sieve of one -eighth inch mesh. PIPES Socket pipes:, cylindrical, smooth, straight, thoroughly vitrified, well glazed sound, and. in all. respects of the best quality and workmanship for the purpose, shall be used in build- ing the sewer herein provided to be constructed. The pipes shall give a clear sharp ring when struck with a mason's hammer. The pipes shall be not less than two feet in 1eng.th. The joints between the pipes shall be securely sealed with the same. quality of mortar herein specified for manholes and catch basins-. The joints shall be wiped -and- pointed inside the pipes., The interior of the pipes shall be kept free from dirt or refuse of every description as the work progresses, and shall be left clean at the completion of the work. One six-inch Y-branch, or house connection . slant, shall be placed in the sewer, -herein provided to be constructed, in front of and for the use, of, each and every lot of subdivided land having a direct frontage of thirty feet or less on the line of said improvement; and in addition thereto one suoh;. Y-branch .shall be placed in s aid sewer in front of and .for the use of each and every thirty feet frontage of each and every lot of subdivided land having a greater direct frontage thanthirty feet -on the line of said improvement. Any and all property subdivided .into lots in such manner as to side on the line -of said improvement shall have one such Y-branch placed ins aid sewer opposite and for. the use of each and every thirty feet of such siding, except the front seventy-five feet thereof. Unsubdivided tracts abutting on the line of said improve- ment shall have one such Y-branch placed in said sewer opposite and for the use of each -and every thirty feet of such tract so abutting. The -openings in Y-branches shall be closed with standard vitrified, tile discs, sealed with cement mortar as specified for joints between pipes. MANHOLES T Four brick manholes shall be built of hard burned sewer brick, upon the sewer or sewers, as the case may be, hereinbefore provided to be constructed and shall be located at the points hereinafter specified. Said manholes shall be placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbefore specified in such manner as to bring the tops of the iron covers herein required for said manholes when in place to the upper surface of the proposed pavement. Said manholes shall be cylindrical in shape having an internal diameter of thirty- six (36) inches at the upper surface of the base and upward to the lowest header course being uniformly drawn in to twenty-four (24) inches in diameter at the top of the masonry by means of six (6) header courses of brick laid end- wise and horizontally, the diameter being decreased uniformly by each course to fit the iron covers hereinafter specified to be furnished and set on the walls of said manholes. The walls of said manholes shall rest upon the base thereof without offsetting and shall be eight (8) inches thick, built (except as above specified for header courses) of alter- nate vertical and horizontal courses of brick. The brick used in the construction of said manholes shall be thoroughly wetted with water before being placed and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1%) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manholes shall begin at a point five (5) inches below the outside bottom of the sewer hereinbefore specified and shall extend upward to said outside bottom and along the sides of said sewer to a point midway between the top and bottom of said sewer, said base to be circular in form, the diameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manholes shall be neatly removed leaving the lower half thereof to form the invert of the manhole. Said manholes shall each be equipped with a circular castiron cover having a tight lid, weighing not Iess than five hundred and forty (540) pounds, of the type known as "Chicago City Standard Heavy" having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two (22) and three - fourths (Y4) inches at the top thereof. Said manhole covers herein specified to be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the tops of the walls of said manholes, which walls shall be built to such height as will bring the tops of the covers when set in place, to the surface of the pavement hereinbefore specified. Said manholes herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: IZ19i98 233 On the center line of Laurel Avenue: One at the south line of Emerson Street. One at a- point one hundred thirty-three (133) feet south of the south line of Emerson Street. One at a point three hundred eighty-one and sixty nine one hundredths (381.69) feet south of the south line of Emerson. Street. , One at the north line of Lyons Street. CATCH B ASIM Six brick catch basins shall be built and connected with the sewers herein provided to be constructed. Said catch basins shall be constructed in the manner below specified. Said catch basins shall be cylindrical in shape, having an internal, diameter of f orty-two inches at the bottom and upward to the lowest header course, being drawn in at the top of the masonry by means of twelve header courses laid endwise and horizintally. The diameter shall be decreased uniformly by each header course to fit the iron covers hereinafter specified to be placed on said catch basins. Said catch basins shall. have walls eight inches thick, built, except as above specified, of two courses of brick placed edgewise in perpendicular courses. The brick used in the con- struction of said catch basins shall be laid in mortar composed by volume of one part of Portland cement and one and one-half parts of sand. Said catch basins shall rest on a solid bottom of two inch pine planks laid closely in single thickness cend securely spiked to pine stringers, or cross planks., two inches thick by six inches wide. The bottom shall be made circular in form and. shall measure sixty inches in diameter. Said catch basins shall be six and one-half feet deep measured from the top of the plank bottom aforesaid to the top of the iron covers hereinafter specified to be furnished and set. The upper surface of which covers shall be placed at the elevation of the adjacent ground. Said catchb asins shall be connected with the sewer of oresaid by means of vitrified, salt glazed, tile pipes having an internal diameter of nine inches. The pipes shall be of the type and quality, and the joints shall be sealed in the manner hereinbefore specified for tile pipe sewers. Each catch b asin connection shall s tart in a nine inc4 Y-branch, which shall be set in the aforesaid sewer at a point not less than six feet in advance of the catchbasin, measured along and in the down -stream direction of the sewer from a point on said sewer directly opposite the catch basin. The pipes shall be laid true to line and grade, and the- connection shall enter the catch • asin at a point two and one-half feet above its bottom. The pipe entering the catch basin through the brick walls thereof shall be an elbow with the socket end turned downward inside. of the catch basin to form a trap. Said catch basins shall each be equipped with a cast iron cover weighing not less. than one hundred eighty -pounds, which - c overshall b e of the same size and, pattern or equal in size, quality and workmanship to the cast iron covers now in use on existing catch basins in Hinman Avenue between University Place and Lee Street in said City of Evanston* Said catch basin. -covers herein provided to be furnished and set shall rest on the walls of said catch basinsherein specified to b e con- structed, which . all shall be built to such height as will bring the top of the covers, %, hen set in place, to the eleva- tions herein specified therefor. Said catch.basins. shall be located at necessary points along said sewers along the gutter line's of the roadway thereof. An inlet nine (9) inches in dianeter shall be made in the side of each catchbasin in such manner as to receive the water from the ditches. Said inlet shall beprovided with a suitable iron grating placed in such a manner as to prevent miscellaneous rubbish from entering the catchbasin through said inlet. Said grating to consist of two (2) one-half (*) inch round iron bars placed vertically, the ends of which bars shall be firmly embedded in the wails of said catch basin in such manner as to divide said inlet into three (3) equal parts* Imo- 234 SECTION 2. That for the purpose of making -the im- provement aforesaid, the following described territory within the said: City of Evanston is hereby createdinto and declared to be a drainage. district, to -wit: Lots nine (9) to .twenty-five (25) both inclusive, in Block One - (1) and lot One . (1) and Lots twenty-six (26) to forty- one (41) (both inclusive) Block two (2) , Arthur . T. McInt osh's Church Street Addition to. Evanston, a subdivision -of- Bart of the southwest one -quarter (j) of the northwest -one -quarter (it of Section thirteen (13.) Township forty-one (41.) North, Range thirteen (13) East of the third. (3rd) Principal Meredian. The owners -and occupants of the -lots, pieces and parcels of land lying within. said drainage district hereinbef-ore described shall at all times hereafter be entitled to the use and. benefit of the sewers -provided by this ordinance. Right, permi-ssion, privilege and authority are hereby given a.nd..granted to the present and future owners and -occupants of thelands lying within said above named drainage limits to open and connect all ditches, drains and sewers which now exist and. may beheza.fter constructed within said district, into and with the said servers-. hereinbefore_ in this ordinance specified. All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Sectionol. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section4. That said improvement shall be made and the whole cost thereof including the sum of one hundred fifty—six and no hundredths dollars ($ 156.00 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements, Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of one hundred fifty—six and no hundredths dollars ($ 156.00 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 5. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into five installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annuum according to law until paid. Section 6. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the '_Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 01 That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section S That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanstoh on the 31st day of October A.D. 1922. Approved Oct. 31st, 1922. John F. Hahn, H.P. Pearsons, City Clerk. Mayor 1Z0i98 RECOMMENDATION, ESTIMATE AND ORDINANCE 235 RECOMENDAT.ION BY BOARD OF LOCAL IMPROVE16ENTS To the Mayor and Aldermen of the: City of .E"vanston in the City Couftci.l`Assembled: We herewith submit an -ordinance providing that the publicalley, extending from the north line of Greenleaf Street to the south line of H ilton Street in Block eighty (80) Village of Evanston, in the City of Evanston, County of Cook, State of Illinois; be improved by grading, paving with a Portland cement Concrete pavement, using a bituminous filler strip for expansion joints in pavement, constructing surface drainage sewer, catch basin, catch basin connection to surface drainage sewer, and man- holes, adjusting present macadam paving adjoining and connecting with the proposed improvement; together with an estimate .of the cost of said improvement and recommend`the.passage of said ordinance aid the making of the.improvement contemplated.°therein. Respectfully submitted, H.P. Pearsons, Wm. Blanchard, Hal W. Smith, Board of Local Improvements of the City of Evanston, Illinois. `Dated, Evanston, Illinois. October 31st, 1922." ESTIMATE_ OF ENGINEER OF BOARD OF LOCAL IMPROVEMTS To the. Mayor and Aldermen of the City of Evanston in the City Counc l Assembled: The . Board of Local Improvements of the City of Evans to n having, adopted a resolution. that the public alley, extending fr cm the north line of Greenleaf Street to the south line of Hamilton Street in Block eighty (80) Village of Evanston, in the City of Evanston, County of Cook, State of Illinois,.be improved by grading, paving with a Portland Cement Concrete pavement, using a bituminous filler strip for expansion joints in pavement, constructing surface drainage sewer, catch o asin, c atchbasin connection to surface drainage sewer, and manholes, adjusting present macadam paving adjoining and connecting with the proposed improvement; and presented to the City Council of .the City of Evanston a recom- mendation that such improvement be made, I herewith submit an estim- ate of the cost of such improvement, as described in said r eso- lution, including labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment, as provided by law, viz: ESTIMATE OF COST 280 Cu. yds. of grading @ $1.60 per cu. yd. 448.00 1360 Sq. yds. of Portland Cement Concrete paving ccmplete in place 0 $2.75 per sq. yd. . . . . 30740.00 325 Line ft. of bituminous filler strip for expansion joints in paving laid complete in place 10,e per lin. ft. . . . . . . . . . . . 32.50 275 Lin. ft. of surface drainage sewer, average, depth of cut five (5) feet includin4g trenching and back - filling laid complete in place 0 $2.35 per lin.ft. 646.25 ' 1 brick catch b asin including cast iron cover plank bottom, excavation and back filling complete in place . : . . . . . . . . . . . . 75.00 10 Line ft. of catchbasin connections to surface ` drainage seiner, average depth of cut four (4) feet, including trenching and back filling., laid complete in place ®' $1.00 per lin. ft. . . . . 0 0 10,00 2 brick manholes including cast iron cover, excava- tion and back filling, complete in place @ $75.00 each . `. . . . . . . . . . . . . 150,00 90 Sq. yds. of Macadam paving adjusted to grade $V20 per sq. yd. . 0 . 0 0 0 0 0 0 . 108.00 236For lawful expenses attending the proceedings for making r said improvement and the cost of making -and collecting the assessment therefor, not to exceed six per centum (6%) of the above, to -wit: $5,209.75 . . . 312.58 Total 5,522.33 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improvement and the lawful expenses attending the same. Wm. Blanchard. Dated, Evanston, Illinois. October 31, 1922, Engineer of Improvements Evanston. AN. ORDINANCE the. Board of Local of the City of Providing that the public alley, extending from the north line of Greenleaf, Street to the south line of Hamilton Street in Block eighty (80) Village of Evanston; in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland cement concrete pavement, using a bituminous filler strip for expansion joints in pavement, constructing surface drainage sewer; catch b asin, catch b asin connection to surface drainage sewer, and manholes, adjusting present macadam paving adjoining and con- jecting with the proposed improvement. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvement shall. be made within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local improvement is as follows, to -wit: That the public alley, extending from the north line of Greenleaf Street to the south line of Hamilton Street in Block Eighty (80) Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be and the same is hereby ordered improved as follows: Location of Pavement The center -line of the pavement herein provided to be constructed shall, coincide with the center line of the alley within which said pavement is included. Width of Pavement The width of the pavement herein provided to be con- structed shall be nineteen (19) feet. Cade -of Pavement The grade of the upper surface of the finished pavement herein provided to be constructed is hereby established as follows, measured in' feet and decimal parts of a foot above the datum plane of the City of Evanston, to -wit: Transverse Section of Ailey Af the north line of Greenleaf. St. At ninety-five (95) feet north of . Greenleaf Street At' two hundred' and thirty-two (232 )'feet north of Greenleaf Street At three` hundred and thirty-two (332) feet north of Greenleaf Street At` f our hundred' and seveinty' (470) feet north of Greenleaf Street At the south line of Hamilton Street buter Edge Center line of pavement of pavement 13.35 12.90 14.05 13.80 12.80' 12.55 13.30 13.05 14.25 14.00 13.80 13.55 ALLEY PAVING The grade of the center line and outer edges of the pavement at intermediate points shall be respec- tively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane of the low water mark of Lake Michigan in the year A. D. 1847, as established by the Trustees of Illinois and Michigan Canal and is 22.41 feet below the - U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the northwest corner of Davis street and Sherman Avenue, in said City of Evanston. The upper surface of the pavement herein provided to be constructed, when completed, shall conform to the arc of a circle passing through the respective grade points in the center line and at the outer edges of the pavement, and shall be true and symmetrical. GRADING The alley herein provided to be improved shall be cleaned prior to the paving thereof, in a thorough manner of all deteriorated' planking, blocking or other debris. The soil of the roadway shall then be ex- cavated or filled upon with other suitable soil, as the case may be, to such depth and shape as will bring the upper surface of the finished pavement, when constructed as hereinafter specified, to the elevations and grades hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable self- propelling roller or flooding with water as the case may require. Depressions or holes appearing as the pre- paration of the sub -grade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left in the sub -grade, shall be removed by the contractor without extra charge. CONCRETE PAVEMENT —ALLEY Upon the subgrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement, composed of Portland cement, sand and gravel mixed by volume in ratios of one part of cement, two ,parts sand, and three parts of gravel with sufficient clean water to give proper plasticity and in the manner here- inafter set forth. The concrete shall be spread on the sub -grade in such quantity and to such form that af- ter being compacted in place it shall have a uniform thickness of six inches. The Portland cement to be used in making this concrete pavement ,shall be of such quality that repre- sentative samples collected from shipments made for the job shall be capable of passing the following tests for fineness, soundness, initial setting, and tensile strength, to -wit: Fineness. The cement shall be ground so that 92 % will pass through a standard sieve, having 10,000 meshes and 7517o will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no check- ing, warping or swelling. Broken briquette of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified for the neat pat. Setting. The cement when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ......................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) .................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. • 275 lbs. The briquettes shall show no retrogression in strength within the period specified. The sand to be used for making the concrete shall be free from dust, clay, loam, vegetable or other deleterious matter. The grains of sand shall be angular and shall range in size from one -quarter inch down to the finest; but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind - drifted sand shall not be used. The sand shall be of such quality that the mortar composed of one part of the cement hereinbefore specified and three parts of sand, by weight, when made into briquettes, will de- velop a tensile strength at least equal to the strength of a mortar of the same consistency and proportion made with the same cement and Standard Ottawa sand. In no case shall the sand, when used for this concrete, contain frost or lumps of frozen matter. The gravel to be used in making this concrete shall be clean, hard, free from dust, loam, vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable sizes grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (1-4) inch. In no case shall the gravel when used for this concrete contain frost or lumps of frozen matter. 77 v, 38 8 The sand and gravel shall be clean- When deliveired on the job, and shall be kept clean until used. The method used for measuring the ingredients in the concrete shall be one that will insure a uniform proportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall lie considered one cubic foot. The concrete shall be mixed in a batch machine mixer of a type that will insure a uniform distribution of the ingredients throughout the mass. Ingredients of the concrete or mortar shall be mixed- to the de- sired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in color, and homogeneous. Clean water,'free from oil, acid, alkali or vegetable matter shall be ad- mitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the gravel from the mortar. The concrete shall be handled rapidly from the mixer to its place in the pavement. Successive batches shall be deposited in place'on the sub -grade in a continuous operation so that sections of the pavement be- tween expansion joints, hereinafter specified, shall be entirely completed and without the use of inter- mediate cross forms or bulk -heads. Concrete shall not be retempered or used that has .partially hardened. The concrete shall be compacted and brought to the established grade and shaped with a template or straight edge, and shall be brought to a comparatively even surface. After the concrete has been so brought to grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even sur- face. Said roller shall not be less than five feet in length, and not less than eight (8) inches not more than twelve (12) inches in diameter and weighing not less than one hundred pounds (100 lbs.). The roller shall be operated across the pavement from side to side of same, by means of ropes attached to each side of the roller, at such angle with the center line of the pavement as to permit the roller to advance along the pavement two feet for each time across. After the roller has covered a given area in the manner de- scribed, the same area shall be similarly rolled by the roller for not less than three (3) times at intervals of fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may be necessary to remove excess water. After the rolling has been completed the pavement shall be finished by two (2) applications of a belt made of canvas, not less than six (6) inches wide and not less than two (2) feet longer than the width of the pavement. For the first application, vigorous strokes at least twelve (12) inches long shall be used. The longi- tudinal movement of the belt along the pavement shall be very slight. The second application of the belt shall be immediately after the water glaze or sheen disappears, and the stroke of the belt shall be not more than four (4) inches, and the longitudinal movement shall be a continuous forward movement. A suitable bridge to span the width of the pavement shall be used to finish the joints, no part of which shall be in contact with the finished work. A notched straight edge ten (10) feet in length shall be used for testing each transverse joint, prior to and subsequent to final finishing. The straight edge shall be placed over the joint, parallel to the center line of the pavement and moved across from curb to curb. When the surface of the concrete upon testing shows to be high or low, concrete will be added or removed to bring the surface its true shape. The concrete adjoining transverse joints shall be dense in character and after rolling shall be finished with a wood float, which is divided through the center and which will permit finishing on both sides of the filler at the same time. The finished surface of the concrete shall not vary more than one -eighth (1-8) of an inch from a two foot straight edge placed upon the concrete in any position. Workmen shall not walk on the freshly laid concrete; and no one shall be allowed on the concrete after it has been worked into form and position with a template or straight edge, until it has thoroughly hardened. EXPANSION JOINTS Transverse expansion joints not less than three -eighths (318) inch or more than one-half (1I2) inch in width shall be placed across the pavement at right angle to the center line of the roadway; spaced so as not to exceed thirty-three and one-third (33 113) feet apart. All expansion joints shall extend through the entire thickness of the pavement. In these expansion joints there shall be placed a prepared strip of bi- tuminous filler of the thickness hereinbefore specified for expansion joints and extending from the bottom of the pavement herein specified to the upper surface of the finished pavement. The upper edges of all joints and the upper outer edges of the pavement shall be neatly troweled to a radius of one -quarter (% ) inch. All metal, manholes, catch basin covers, and other fixed objects shall be separated from the concrete pavement by a joint filler of the same character as hereinbefore specified for expansion joints; which joint filler shall extend through the entire thickness of the pavement. PROTECTION NMWWiF As soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be spray- ed with water; and it shall be kept thoroughly wet for at least ten days. As soon as it can be done without damage to the concrete, the surface thereof, during hot and dry weather and if unshaded shall be covered' with not less than one inch of earth, sawdust, straw or other suitable and available material, which cover`-' ing shall be kept wet for at least four days after being placed. In dry and hot weather freshly laid con-F }` crete shall be protected by a canvas covering until it can be sprinkled or covered, as specified. f . -00 110198 239 The water and concrete aggregates shall be heated if at any time during the progress of the work the temperature is, or from weather reports will likely during the next twenty-four hours drop to (35) thirty- five degrees Fahrenheit. The concrete shall be protected against freezing for at least ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established line, and their upper edges shall conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed f rom forms that have previously been used. The pavement shall be thoroughly cleaned and open to the public as soon as the cement has set suffici- ently to receive the traffic without injury to the surf ace or body of the concrete. SURFACE DRAINAGE SEWER` For the purpose of carrying off storm waters from the surface of the pavement herein provided to be constructed, surface drainage sewers of vitrified, salt glazed, tile pipe shall be laid as hereinafter specified. Said sewerarshall be laid in open trenches in the ground in such manner as to conform to the elevations, lines and grades hereinafter specified. . The pipe used in the construction of said sewerdrshall be of the type known as "Bell and Spigot" having an internal diameter of nine (9) inches, the metal of which pipe shall have a thickness of thirteen -sixteenths (13/16) of an inch and shall be not less than two (2) feet in length, cylindrical, straight, smooth, thoroughly vitrified, salt glazed, free from cracks or blisters and of the best quality and workmanship. The joints between the pipes shall be securely sealed with a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 / ) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The joints between said pipes shall be wiped and pointed inside the pipes. The interior of the pipes shall be kept free from dirt or refuse of every description and shall be left clean at the completion of the work. The open trenches excavated to receive said sewers,, shall be made at least twelve (12) inches wider than the ex- terior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing joints. The materials excavated shall be kept compactly along the sides of the trench and shall be backfilled as soon as practic- able in order to occasion the least possible inconvenience to the public in use of the street or alley as the case may be. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. The open and unconnected ends of said sewer& -shall each be securely closed with a salt glazed, vitrified tile disc, and sealed in the manner above specified for joints between pipes. Said sewer or sewers as the case may be shall be laid as follows, to -wit: (1). In and along the center line of said alley from and connecting with the sewer now in place along the center line of Greenleaf Street to a point three hundred twenty-three and one-half (323.5) feet south of the south line of Hamilton Street. The internal diameter of this sewer shall be nine (9) inches. At its connection with the aforesaid sewer, the elevation of the inside bottom of this sewer shall be eight (8) feet above the datum plane hereinbefore defined and the grade thereof shall rise at a uniform rate to an elevation of nine and thirty-five hundredths (9.35) feet above said datum plane at its terminus. CATCH BASIN# For the purpose of receiving storm waters from the surface of the pavement herein provided to be con- structed one (1,) catch basins shall be constructed at the necessary pointooalong the center line of said pavement. Said Catch basing sholl be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catch basin*, when in place, to the upper surface of the proposed pavement. Said catch basin# shall be cylindrical in shape having an internal diameter of thirty-six (36) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by means of three (3) header courses of brick, laid endwise and horizontally, to fit the iron cover, hereinafter specified to be .furnished and set on the walls of said catch basins. Said catch -basins shall have walls eight (8) inches thick built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch - basin* shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) 'part of Portland cement of the best quality and one and one-half (1 112) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch -basing shall eaek rest on a solid bottom of two (2) inch pine planks, laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. 240 The said bottom shall be made circular in form, and shall measure.fifty-four (54) inches in diameter and shall have its upper side placed four(4) feet below the upper surface of the brick wall for said catch -basin. Said catch -basing shall be connected with the sewer, or sewers as the case may be, now existing, or herein provided to be constructed, as the case may be, in and along the center line of the said pavement, along which center line and over said sewer or sewers, the respective catch -basins aie to be constructed. Said catch -basing shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed tile pipe having an internal diameter of six (6) inches and of the type known as "Bell and Spigot," the metal of which pipes shall be three -fourths (314) of an inch in thickness and shall be not less than two (2) feet in length. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipe shall be se- curely sealed with a mortar of the quality herein required for brick walls in catch -basins. Each catch -basin connection shall start in a six-inch "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the said sewer at a point not less than eight (8) feet in advance of the center of the catch -basin measured along and in the down stream direction of the sewer. The pipe shall be laid true to line and grade and the connection shall enter the catch -basin through the brick wall thereof at a point two and one-half (2 112) feet above the top of the plank bottom of said catch -basin. The pipe entering the catch -basin through the brick wall thereof, shall be an elbow with the bell end turned downward inside the catch -basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be back -filled as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the alley. The trenches shall be promptly back -filled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch -basing shall each be equipped and fitted with a circular cast iron grate cover weighing not less than three hundred and sixty (360) pounds. Said grate to be so constructed as to freely admit water from the surface of the pavement to the catch -basin) and having a vertical height of nine (9) inches, the opening in said cover shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) inches at the top thereof. The diameter of the lid or grate for said covers shall be 22 314 inches. Said catch -basin covers herein provided to be furnished and set shall rest on the walls of the catch -basins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catch -basing. The walls shall be built to such height as will bring the tops of tl).e cover# when set in place, to the upper surface of the pavement at points where said catch -basins Ire located. Said catch -basing herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: 1GZANHOLES Two brick manholes shall be built of hard burned sewer brick, upon the sewer or sewers, as the case may be, hereinbefore provided to be constructed and shall be located at the points hereinafter specified. Said manholes shall be placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbefore specified in such manner as to bring the tops of the iron covers herein required for said manholes when in place to the upper surface of the proposed pavement. Said manholes shall be cylindrical in shape having an internal diameter of thirty- six (36) inches at the upper surface of the base and upward to the lowest header course being uniformly drawn in to twenty-four (24) inches in diameter at the top of the masonry by means of six (6) header courses of brick laid end- wise and horizontally, the diameter being decreased uniformly by each course to fit the iron covers hereinafter specified to be furnished and set on the walls of said manholes. The walls of said manholes shall rest upon the base thereof without offsetting and shall be eight (8) inches thick, built (except as above specified for header courses) of alter- nate vertical and horizontal courses of brick. The brick used in the construction of said manholes shall be thoroughly wetted with water before being placed and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1;/2) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manholes shall begin at a point five (5) inches below the outside bottom of the sewer hereinbefore specified and shall extend upward to said outside bottom and along the sides of said sewer to a point midway between the top and bottom of said sewer, said base to be circular in form, the diameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manholes shall be neatly removed leaving the lower half thereof to form the invert of the manhole. Said manholes shall each be equipped with a circular castiron cover having a tight lid, weighing not less than five s hundred and forty (540) pounds, of the type known as "Chicago City Standard Heavy" having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two (22) and three - fourths (Y4) inches at the top thereof. Said manhole covers herein specified to be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the tops of the walls of said manholes, which walls shall be built to such height as will bring the tops of the covers when set in place, to the surface of the pavement hereinbefore specified. Said manholes herein provided to be constructed, referring to the vertical axis thereof, shall be located*as follows:: One at the center line of Greenleaf Street. One at one hundred (100) feet north of the; north line of Greenleaf Street iZ19i98 ADJUSTMENT OF PRESENT MACADAM PAVING 241 The present macadam paving where the same adjoins the pro- posed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with ma terials of kind and quality composing said macadam paving and having been thoroughly compacted it shall form a base or founda- tion for a bituminous macadam pavement to be placed thereon. The upper surface of said base or foundation when completed shall -be two (2) inches below the finished grade. of thepraposed improvement where same adjoins said macadam. paving. Upon the base or foundation, prepared as hreeinbefore ep eci- fied, there shall be spread a layer of clean, hard broken lime- stone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of lime- stone shall be evenly spread, and in sufficient quantity to insure a thickness of two (2) inches thereof being spread on and used in each and every square yard of the roadway. As -soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone.. is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished and the layer thereof is dry, there shall be applied to the lime- stone (at a temperature not less than 250 nor more than 275 degrees F hrenheit) an asphaltic cement in such quantities as to insure nol less. than one (1) gallon thereof being evenly spread on and used in each and every square yard of paving, in addition to the squee-gee or,second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust Vegetable or other. deleterious substances, and broken to a size ranking from the. largest particle that would pas.a through. a sieve having circular holes three -fourths inch in diameter to the largest particle that would. pass through a sieve having circular holes -one-fourth inch in diameter. The limestone screenings shall be used in sufficient quantity- to snugly fill the inter- stices in the course of stone to which same is applied. ' Imme- diately following the spreading of these limestone screenings the paving so covered, shall be given a thorough rolling with a roller of the weight and. type hereinbefore named. This rol- ling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the pavingshall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be applied to the surface a second application of asphaltic cement of the same kind and quality as that used in the first application. This s econd application shall be su ficient in quantity and.so ap lied and spread, as to insure not less than three-quarters (34 ) fal lon thereof being evenly spread and used on each and every square yard of paving. Immediately after the second application of asphaltic cement is made and -spread (and.progressing therewith) there shall be spread on the surface of the roadway so treated, clena, dry, hard granite chips, of a size ranging from a maxi- mum dimension of three -fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such manner and wuantity as to insure not less than on one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of paving. A final rolling of the paving shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type here- inbefore named. The final rolling shall continue until the surface of the pavement is. thoroughly compacted, and brought to a surface, free from depressions and true to form and grade. Any and all depressions developing during progress of the 242 rolling, required in process of constructing the pavement shall be, filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The asphaltic cement used in the improvement herein pro- vided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meetin the following..requirementsand of passing the following tests, to -wit: (1) The asphaltic cement shall consist of not less that sixty-five per cent refined, solid natural asphalt and a flux to be tested with and: proven the best suited to the asphalt to be used; and shall not be a by-product of theoil refining or gas manufacturing industries. It shall be similar in character to that used success- fully in the construction of sheet asphalt .pavements, and shall possess such chemical and physical properties and be so prepared for use as to best adapt it to the climatic and traffic conditions of the roadway on Which it is to be used. (2) Its specific gravity shall be greater. than 980 at 77 degrees Fahrenheit. (3) It•must have.a penetration between 5 and 10 millimeters at 77 degrees, Fahrenheit under 100 grams -for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahren- heit under 200 grams for one minute. (4) It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be present in homogeneous solution, no granular constituent being _)resent. (5) It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6) 50 grams of the cement upon being maintained at a. uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7) It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95/. (8) . Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98*9 shall be soluble in cold carbon tetrachloride. (9) The bitumen of the cement shall be soluble in petrol- eum naptha, at the air temperature to the extent of not less than 72 per cent. (10) Upon ignition, the bitumen of the cement shall yield not less than .9 per cent nor more than 15 per cent of fixed carbon or residue coke. 1Zt9198 243 MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit: Fineness. The cement shall be so ground that 927fo will pass through a standard sieve, having 10,000 meshes and 757Jo will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lhs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the naives, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE — The tile ,pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for' the service or load that would be imposed upon it from within or without. Said Sipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. 244 All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of Three hundred twelve and fifty—eight hundredths dollars ($ 312.58 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of three hundred twelve and fifty—eight hundredths dollars ($312.58 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into five installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annuin according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal 'of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved Jurie 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Cour of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a specia. assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 31st day of October A.D. 1922. Approved: Oct. 31st 1922 John F. Hahn, H.P. Pearsons, City Clerk. Mayor. ' 1Zi9198 245 RECCNDATION, ESTIMATE AND ORDINANCE REC CmMND-ATION BY BOARD OF LOCAL WROVE TS . To the Mayor and Aldermen of the City of Evanston in the City Council. Assembled: . - - - - - - - We herewith submit an ordinance providing that the public alle in the rear of lots fourteen (14) to twenty t20 ) Mboth inclusive and the north thirteen (13) feet of lot thirteen ), in block --one (1) in the resubdivision of blocks four (4) and five (5) Gibbs, Ladd and George's Addition to Evanston, in the northeast one -quarter (J) of Section nineteen (19) Township forty-one (41) North, R nge fourteen {14) East- af- the- Third Principal. Meridian, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland Cement Concrete pavement, using a bituminous filler strip f:or expansion joints in, pavement, constructing necessary surface drainage sewer, catc7A basin, catch basin connection to surface drainage sewer and manhole, adjusting macadam paving adjoining and connecting with the proposed improvement; together with an es- timate of the cost of said improvement and recommend the passage of said ordinance and the making of the improvement contemplated therein. Respectfully submitted, H.P. Pears©as, Wme Blanchard, Hal W. Smith. Board of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, Illinois. October 31, 1922/ ESTIMATE. OF ENGINEER OF BOARD OF LOCAL IMPROVE11-I:NTS e To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that the ublic alley in the rear of lots fourteen 14) to twenty .(20) Mth inclusive) and the north thirteen (13 feet of lot thirteen .13), in block one (1) in the resubdivision of -blocks four (4) and five (5) Gibbs, Ladd and Georges Addition to Evanston, in the northeast one quarter (-J) of section nineteen (19) Township forty-one (41) North, Range fourteen (14) East of the Third Principal Meridian, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland Cement Concrete pave- ment, using a bituminous filler strip for ezpansion joints in pavement, constructing necessary surface drainage sewer, catch basin, catch basin connection to surface drainage sewer and man- hole adjusting macadam paving adjoining and connecting with the proposed improvement; and presented to the City Council of the City of Evanston a r ec anmendat ion that such improvement be made, I herewith submit an estimate of the cost of said improvement as described in said resolution, including labor, material and law- ful expenses attending the proceedings for making said improve- ment and the cost of making and collecting the assessment, as provided by law, viz: 130 Cu. yds. of 545 Sq. yds. of c omple to in 150 Lin. ft. of joints in p; per line ft 235 Line f t e of ESTIMATE OF COST grading @ $1.60 per cu. yd. 208.00 Portland Cement Concrete paving place @ $2.75 per sq,, yd. . e 1,498.75 bituminous filler strip for expansion iving, laid complete in place ® 10,0 15.00 surface drainage sewer, average 246 depth of cut five (5) feet including trenching and back filling, laid complete in place @ $2.35 per lino f t. e o - . $ 552.25 1 Brick catch b asin including cast- iron cover, vlank bottom, excavation and back filling complete in place . . . . e e : 75.00 10 Lin. ft. of catch basin connection to surface drainage sewer, average depth of cut five (5) feet including trenching and back filling laid complete in place ® $1e00 per line ft. o 10.00 1,Brick manhole including cast iron cover, exca- vation and back filling,' complete in place 75.00 30 Sq. yds. of macadam paving adjusted $1.20 per s q * yd. . . . o - . . . o 36.00 For lawful expenses attending the proceedings for making said improvement. and the cost of making and colledting the assessment therefor, not to exceed six per centum (6%) of the above, to -wit: $2,470.00 148.20 Total 2*618.20 And I hereby certify th4t in my opinion the above estimate does not exceed the probable cost of the above proposed improve- ment and the lawful expenses attending the same. Dated, Evanston, Illinois. October 31st, 1922. Wmo Blanchard. Engineer of the Board of Local Im- provements of the City of Evanston. AN ORDINANCE Providing that the public alley in the rear of lots fourteen (14) to twenty (20) (both inclusive) and the north thirteen (13) feet of lot thirteen (13), in block one (1), in the resubdivision of blocks four. (4) and five (5) Gibbs, Ladd and George's Addition to Evanston, in the northeast one quarter (J) of section nineteen (19) Township forty-one (41) North, Range fourteen (14) East of the Third Principal Meridian, in the City of Evanston, County of Cook, State of Illinois, be improved. by grading, paving with a Portland Cement Concrete pavement, using a bituminous filler strip for expansion joints in pavement, constructing necessary surface dra.imge sewer, catch basin, catch basin connection to sruface drainage sewer and manhole, adjusting macadam paving adjoining and connecting with the proposed improvement. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION le That a local improvement shall be made within the -City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local improvement is as follows, to -wit': That the Public Alley in the rear of lots fourteen (14) to twenty (20) (both inclusive) and the north thirteen (13) feet of lot thirteen (13), in block one (1) in the resubdivision of blocks four (4) and five (5) Gibbs, Ladd and George's Addition to Evanston, in the northeast one quarter (J) of section nineteen (19),.Township forty-one (41) North, Range fourteen (14) east of the Third Principal Meridian, in the City of Evanston, County of Cook, State of Illinois be and the same is hereby ordered improved as: follows: Location of Pavement The center line .of the pavement herein provided to be con- structed shall coincide with the center line of the alley w-ithin which said improvement is inc llxded. Width of Pavement The width of the pavement herein provided to be - constructed shall be twelve (12) feet. % 0198 Grade. -of Pavement 247 The grade of the upper surface of the finished pavement herein provided to be constructed is hereby established as follows, measured in feet and decimal parts of a foot above the datum plane of the City of Evanston, to -wit: Transverse Section of Alley Outer edges Center line of pavement of alley At the south line bf Lee Street 14.30 14.05 At eighty-seven (87) feet eouth.of the. south line of Zee Street . 15.20 14.95 At one hundred ninety-nine (199) feet south of the south line of Lee Street 14.60 14.35 At the south line of the north thirteen (13) feet of Lot thirteen (13) 15.40 15.15 ALLEY PAVING The grade of the center line and outer edges of the pavement at intermediate points shall be respec- tively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane of the low water mark of Lake Michigan in the year A. D. 1847, as established by the Trustees of Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the northwest corner of Davis street and Sherman Avenue, in said City of Evanston. The upper surface of the pavement herein provided to be constructed, when completed, shall conform to the arc of a circle passing through the respective grade points in the center line and at the outer edges of the pavement, and shall be true and symmetrical. GRADING The alley herein provided to be improved shall be cleaned prior to the paving thereof, in a thorough manner of all deteriorated planking, blocking or other debris. The soil of the roadway shall then be ex- cavated or filled upon with other suitable soil, as the case may be, to such depth and shape as will bring the upper surface of the finished pavement, when constructed as hereinafter specified, to the elevations and grades hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable self- propelling roller or flooding with water as the case may require. Depressions or holes appearing as the pre- paration of the sub -grade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left in the sub -grade, shall be removed by the contractor without extra charge. CONCRETE PAVEMENT —ALLEY Upon the subgrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement, composed of Portland cement, sand and gravel mixed by volume in ratios of one part of cement, two ,parts sand, and three parts of gravel with sufficient clean water to give proper plasticity and in the manner here- inafter set forth. The concrete shall be spread on th e sub -grade in such quantity and to such form that af- ter being compacted in place it shall have a uniform thickness of six inches. The Portland cement to be used in snaking this concrete pavement shall be of such quality that repre- sentative samples collected from shipments made for the job shall be capable of passing the following tests for fineness, soundness, initial setting, and tensile strength, to -wit: Fineness. The cement shall be ground so that 92 Jo will pass through a standard sieve, having 10,000 meshes and 757o will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no check- ing, warping or swelling. Broken briquette of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified for the neat pat. Setting. The cement when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) .................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) .................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. The sand to be used for making the concrete shall be free from dust, clay, loam, vegetable or other deleterious matter. __ �_ • The grains of sand shall be angular and shall range in size from one -quarter inch down to the finest; but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind - drifted sand shall not be used. The sand• shall be of such quality that the mortar composed of one part of the cement hereinbefore specified and three parts of sand, by weight, when made into briquettes, will de- velop a tensile strength at least equal to the strength of a mortar of the same consistency and proportion made with the same cement and Standard Ottawa sand. In no case shall the sand, when used for this concrete, contain frost or lumps of frozen matter. The gravel to be used in making this concrete shall be clean, hard, free from dust, loam, vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable sizes grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (1-4) inch. In no case shall the gravel when used for this concrete contain frost or lumps of frozen matter. The sand and gravel shall be clean when delivered on the job, and shall be kept clean until used. The method used for measuring the ingredients in the concrete shall be one that will insure a uniform proportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be considered one cubic foot. The concrete shall be mixed in a batch machine mixer of a type that will insure a uniform distribution of the ingredients throughout the mass. Ingredients of the concrete or mortar shall be mixed to the de- sired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in color, and homogeneous. Clean water, free from oil, acid, alkali or vegetable matter shall be ad- mitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the gravel from the mortar. _ The concrete shall be handled rapidly from the mixer to its place in the pavement. Successive batches shall be deposited in place on the sub -grade in a continuous operation so that sections of the pavement be- tu,een expansion joints, hereinafter specified, shall be entirely completed and without the use of inter- mediate cross forms or bulk -heads. Concrete shall not be retempered or used that has partially hardened. The concrete shall be compacted and brought to the established grade and shaped with a template or straight edge, and shall be brought to a comparatively even surface. After the concrete has been so brought to grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even sur- face. Said roller shall not be less than five feet in length, and not less than eight (8) inches not more than twelve (12) inches in diameter and weighing not less than one hundred pounds (100 lbs.). The roller shall be operated across the pavement from side to side of same, by means of ropes attached to each side of the roller, at such angle with the center line of the pavement as to permit the roller to advance along the pavement two feet for each time across. After the roller has covered a given area in the manner de- scribed, the same area shall be similarly rolled by the roller for not less than three (3) times at intervals of fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may be necessary to remove excess water. After the rolling has been completed the pavement shall be finished by two (2) applications of a belt made of canvas, not less than six (6) inches wide and not less than two (2) feet longer than the width of the pavement. For the first application, vigorous strokes at least twelve (12) inches long shall be used. The longi- tudinal movement of the belt along the pavement shall be very slight. The second application of the belt shall be immediately after the water glaze or sheen disappears, and the stroke of the belt shall be not more than four (4) inches, and the longitudinal movement shall be a continuous forward movement. A suitable bridge to span the width of the pavement shall be used to finish the joints, no part of which shall be in contact with the finished work. A notched straight edge ten (10) feet in length shall be used for testing each transverse joint, prior to and subsequent to final finishing. The straight edge shall be placed over the joint, parallel to the center line of the pavement and moved across from curb to curb. When the surface of the concrete upon testing shows to be high or low, concrete will be added or removed to bring the surface its true shape. The concrete adjoining transverse joints shall be dense in character and after rolling shall be finished with a wood float, which is divided through the center and which will permit finishing on both sides of the filler at the same time. The finished surface of the concrete shall not vary more than one -eighth (1-8) of an inch from a two foot straight edge placed upon the concrete in any position. Workmen shall not walk on the freshly laid concrete; and no one shall be allowed on the concrete, after it has been worked into form and position with a template or straight edge, until it has thoroughly hardened. EXPANSION JOI\TS Transverse expansion joints not less than three -eighths (318) inch or more than one-half (1I2) inch in width shall be placed across the pavement at right angle to the center line of the roadway; spaced so as not to exceed thirty-three and one-third (33 113) feet apart. All expansion joints shall extend through the entire thickness of the pavement. In these expansion joints there shall be placed a prepared strip of bi- tuminous filler of the thickness hereinbefore specified for expansion joints and extending from the bottom of the pavement herein specified to the upper surface of the finished pavement. The upper edges of all joints and the upper outer edges of the pavement shall be neatly troweled to a radius of one -quarter (/ ) inch. 249 All metal, manholes, catch basin covers, and other fixed objects shall be separated from the concrete pavement by a joint filler of the same character as hereinbefore specified for expansion joints; which joint filler shall extend through the entire thickness of the pavement. a PROTECTllON- As soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be spray- ed with water; and it shall be kept thoroughly vet for at least ten days. As soon as it can be done without damage to the concrete, the surface thereof, during hot and dry weather and if unshaded shall be covered with not less than one inch of earth, sawdust, straw or other suitable and available material, which cover- ing shall be kept wet for at least four days after being placed. In dry and hot weather freshly laid con- crete shall be protected by a canvas covering until it can be sprinkled or covered, as specified. The water and concrete aggregates shall be heated if at any time during the progress of the work the temperature is, or from weather reports will likely during the next twenty-four hours drop to (35) thirty- five degrees Fahrenheit. The concrete shall be protected against freezing for at least ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established line, and their upper edges shall conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have previously been used. The pavement shall be thoroughly cleaned and open to the public as soon as the cement has set suffici- ently to receive the traffrc without injury to the surf ace or body of the concrete. SURFACE DRAINAGE SEWER For the purpose of carrying off storm waters from the surface of the pavement herein provided to be constructed, surface drainage sewer# of vitrified, salt glazed, tile pipe shall be laid as hereinafter specified. Said sewers shall be laid in open trenches in the ground in such manner as to conform to the elevations, lines and grades hereinafter specified. The pipe used in the construction of said sewere shall be of the type known as "Bell and Spigot" having an internal diameter of nine (9) inches, the metal of which pipe shall have a thickness of thirteen -sixteenths (13/16) of an inch and shall be not less than two (2) feet in length, cylindrical, straight, smooth, thoroughly vitrified, salt glazed, free from cracks or blisters and of the best quality and workmanship. The joints between the pipes shall be securely sealed with a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1/) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The joints between said pipes shall be wiped and pointed inside the pipes. The interior of the pipes shall be kept free from dirt or refuse of every description and shall be left clean at the completion of the work. The open trenches excavated to receive said sewerv, shall be made at least twelve (12) inches wider than the ex- terior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing joints. The materials excavated shall be kept compactly along the sides of the trench and shall be backfilled as soon as practic- able in order to occasion the least possible inconvenience to the public in use of the street or alley as the case may be. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. The open and unconnected ends of said sewer* shall each be securely closed with a salt glazed, vitrified tile disc, and sealed in the manner above specified for joints between pipes. Said sewer or sewers as the case may be shall be laid as follows, to -wit: (1) In and along the center line of sgid alley from and connecting with the sewer now in place along the center line of Lee Street to a ppint one hundred ninety-nine (199) feet south of the gouth line of Lee Street. The internal diameter of this sewer shall be nine (9) inches. At ills connection with the aforesaid sewer, the elevation of the in- side bottom of this sewer shall, be nine and thirty hundredths (9.30) feet above the datum plane hereinbefore defined and the grade thereof shall rise thence at a uniform rate to an elevation often and' five - tenths (10.5) feet above said datum plane at its terminus* 250 CATCH BASIN# For the purpose of receiving storm waters from the surface of the pavement herein provided to be con- structed one (1) catch basin# shall be constructed at the necessary points along the center line of said pavement. Said Catch basin sholl be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the topsof the iron covers herein required for said catch basins, when in place, to the upper surface of the proposed pavement. Said catch basins shall be cylindrical in shape having an internal diameter of thirty-six (36) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by means of three (3) header courses of brick, laid endwise and horizontally, to fit the iron covert hereinafter specified to be furnished and set on the walls of said catch basin#. Said catch -basins shall have walls eight (8) inches thick built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch - basins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 112) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch -basins shall aaak rest on a solid bottom of two (2) inch pine planks, laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure.fifty-four (54) inches in diameter and shall have its upper side placed four(4) feet below the upper surface of the brick wall for said catch -basin. Said catch -basins shall be connected with the sewer, or sewers as the case may be, now existing, or herein provided to be constructed, as the case may be, in and along the center line of the said pavement, along which center line and over said sewer or sewers, the respective catch -basins A to be constructed. Said catch -basins shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed tile pipe having an internal diameter of six (6) inches and of the type known as "Bell and Spigot," the metal of which pipes shall be three -fourths (314) of an inch in thickness and shall be not less than two (2) feet in length. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipe shall be se- cures sealed with a mortar of the quality herein required for brick walls in catch -basins. Syai d Fpmk- catch -basin connection shall start in a six-inch "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the said sewer at a point not less than eight (8) feet in advance of the center of the catch -basin measured along and in the down stream direction of the sewer. The pipe shall be laid true to line and grade and the connection shall enter the catch -basin through the brick wall thereof at a point two and one-half (2 112) feet above the top of the plank bottom of said catch -basin. The pipe entering the catch -basin through the brick wall thereof, shall be an elbow with the bell end turned downward inside the catch -basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be back -filled as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the alley. The trenches shall be promptly back -filled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch -basin, shall eseh be equipped and fitted with a circular cast iron grate cover weighing not less than three hundred and sixty (360) pounds. Said grate to be so constructed as to freely admit water from the surface of the pavement to the catch -basin) and having a vertical height of nine (9) inches, the opening in said cover shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) inches at the top thereof. The diameter of the lid or -grate for said coverp shall be 22 314 inches. Said catch -basin covert herein provided to be furnished and set shall rest on the walls of the catch -basing herein specified to be constructed. Said cover* shall be imbedded in a mortar of the quality herein required for brick walls in said catch -basins. The walls shall be built to such eight as will bring the tops .o� the coverer when set in place, to the upper surface of the pavement atApoints where said catch-basi%i ame located. Said catch -basin# herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: On the center line of the alley herein provided to be paved at a point one hundred andninety-nine (199) feet south of the south line of Lee Street. 11, 010 8 MANHOLE# 251 One brick manholes shall be built of hard burned sewer brick, upon the sewer or sewers, as the case may be, hereinbefore provided to be constructed and shall be located at the points hereinafter specified. Said manholes shall be placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbefore specified in such manner as to bring the tops of the iron covers herein required for said manholes when in place to the upper surface of the proposed pavement. Said manholes shall be cylindrical in shape having an internal diameter of thirty- six (36) inches at the upper surface of the base and upward to the lowest header course being uniformly drawn in to twenty=four (24) inches in diameter at the top of the masonry by means of six (6) header courses of brick laid end- wise and horizontally, the diameter being decreased uniformly by each course to fit the iron covers hereinafter specified to be furnished and set on the walls of said manholes. The walls of said manholes shall rest upon the base thereof without offsetting and shall be eight (8) inches thick, built (except as above specified for header courses) of alter- nate vertical and horizontal courses of brick. The brick used in the construction of said manholes shall be thoroughly wetted with water before being placed and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1;/) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manholes shall begin at a point five (5) inches below the outside bottom of the sewer hereinbefore specified and shall extend upward to said outside bottom and along the sides of said sewer to a point midway between the top and bottom of said sewer, said base to be circular in form, the diameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manholes shall be neatly removed leaving the lower half thereof to form the invert of the manhole. Said manholes shall each be equipped with a circular castiron cover having a tight lid, weighing not less than five hundred and forty (540) pounds, of the type known as "Chicago City Standard Heavy" having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two (22) and three - fourths (3/4) inches at the top thereof. Said manhole covers herein specified to be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the tops of the walls of said manholes, which walls shall be built to such height as will bring the tops of the covers when set in place, to the surface of the pavement hereinbefore specified. Said manholes herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: At the center Line of Lee Street. ADJUSTMENT OF PRESENT MACADAM PAVING The present macadam paving where the same adjoins the proposed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and quality composing said 4iacadam paving and }paving been thoroughly compacted it shall form a base or foundation for a bi tuminoud macadam pavement to be placed thereon. The upper surface of said base or foundation when completed shall be two (2) inches below the finished grade of the proposed improvement where same adjoins said macadam paving. Upon the base or foundation, prepared. as hereinbefore specified, there shall be spread a layer of clean, hard broken limestone ranging in size from a maximum dimension of two inches to. a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of two (2) inches thereof being spread on and used in each and every square yard of the roadway. As spon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing nor less than ten tons . The initial rolling shall end as sornt as the stone is - set and ceases to creep under action of the roller. Y As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be applied to the limestone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one (1) gallon thereof being evenly spread on and used in each and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application 252 of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size ranging from ' the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diameter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which the same is applied. Immediately following the spreading of these limestone screenings the paving so covered, shall be given a thorough rolling with a roller of the weight and type hereinbefore named. This rolling shall continue until the screen- ings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the paving shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be applied to the surface a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread, as to insure not less than three-quarters (J-) gallon thereof being evenly spread and used on each and every square yard of paving. Imne diately after the second application of asphaltic cement is made and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximu* dimension of three -fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of paving. A final rolling of the paving shall cl os ely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the pavement is thoroughly compacted, and brought to a surface, free from depres- sions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement shall be filled, as the rolling; continues, with the same respective kind of stone as that on which the roller is operating. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples col- lected from shipments thereof shall be capable of meeting the fol- lo,ring requirements and of passing the following tests, to -wit: (1) The asphaltic cement shall cosist of not less than sixty-five per cent refined, solid natural asphalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a. by-product of the oil refining or gas manufacturing in- dustries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so prepared for use as to best adapt it to the climatic and traffic conditions of the road- way on which it is to be used. (2) .-Its specific gravity shall be greater than 980 at 77 degrees. Fahrenheit. (3) It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and.must not be harder than one millimeter penetration at 32 degrees Fahren- heit under 20�0 grams for one minute. (4) It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be present in homogeneous solution, no granular constituent being present. WN 253 (5) It must not flash velow 350 degrees --Fahrenheit when tested in a New York state closed. oil tester. (6) 50 grams of the cement upon being. maintained at a uniform temperature. of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7) It shall be. soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95%. (8) Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98-f% shall. be soluble in cold carbon tetrachloride. (9) The bitumen of the cement shall be soluble in petroleum naptha, at the air temperature to the extent of not less than 72 per cent. (10) Upon ignition, the bitumen of the cement shall yield not less than 9 Per cent nor more than 15 per cent of fixed carbon or residue coke. MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be har d burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and -standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to-wi.t: Fineness. The cement shall be so ground that 92 % will pass through a standard sieve, having 10,000 meshes and 75°fo will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: .r Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength "r days (1 clay in moist air, 6 days in water) ................................. 200 lbs. 28 days 1 day in moist air, 27 days in water) ........... 275 lbs. ___;, 25 The briquettes shall show no retrogression in strength within the period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and -at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The tile ,pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said Spipe shall give a clear ring when lightly s;ruck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: . For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. . Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston. provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of one hundred forty—eight and twelnty—hundredths dollars ($148.20 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of one hundred forty—eight and twenty hundredths dollars ($148.20 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into five installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued parable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 31st day of October A.D. 1922. Approved: Oct. 31st. 1922 John F. Hahn, H.P. Pears ons , City Clerk. May or i IZ 1919 S BE IT ORDAINED BY THE CITY COUNCIL OF TIDE CITY OF 255 EVANST ON: R SECTION 1. That the public alley (twen.ty (20) feet in width) lying east of and adjoining Lots fifteen (15) and Sixteen (16) in Ridge Terrace Subdivision of Lot One (1 in County Clerk's Division of that: part of the Northwest quarter 4) of fractional Section Seven (7) , Township Forty One (41) North, Range Fourteen (14). East of the Third (3rd) Principal Meridian, lying east of Ridge Road, in the City of Evanston, in the County of Cook and State of Illinois, be and the same is .hereby vacated,. as the same is no longer required for public use, and the interests of the City of Evanston will be subserved by such vacation* SECTION 2. The plat. hereto attached showing, in red coloring, the property vacat-ecL, is hereby approved and made a part of this ordinance, and the City Clerk is hereby directed to certify the sane as such. SECTION 3. This ordinance shall be in full force and effect from and after its passage and approval and the filing in the office of the Recorder of Deeds of Cook County, Illinois, of. a certified copy of this ordinance, to which is attached a plat showing property vacated. Adopted by the City Council of theCity of Evanston on the 5th day of Decenber,ad 1922. Approved: Dec. 6, 1922 John F. Hahn, H.P. Pearsons, City Clerk. Mayor* BE IT ORDAINED. BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That Section 10 of the ordinance entitled: "An Ordinance authorizing the Evanston Traction Company to construct, reconstruct, operate and maintain a system of street railways in streets and public ways of the City of Evanston." -adopted August 6, 1913, be and the same is amended so, as to read as follows, to -wit: Section 10,. The Company hereby agrees to comply with a12 reasonable regulations as to the service of the said street railway system which may be prescribed from time to time by the City Council of said City. The company may permit advertisements in its cars but no advertisement shall be placed upon the outside of any car and only the space between the top of the windows and the transom of the car shall be used for advertise. ments on the inside of the cars. No advertisement of intoxicating liquors shall be permitted in said cars. The Company is hereby authorized and permitted to operate funeral cars and separate cars for the use of the Unite. States Post Office Department for the carriage of mail. . SECTION 2. That Section 13 of said ordinance be and the .same is amended so as to read as follows, to -wit: K Section 13 . No passes of any kind or description shall be issued or given to any person. . Employees, officers and directors of the Company, the Commissioner of Public Works, and policemen and firemen in full uniform shall be carried upon the street railway system of the Company without the payment of fare. SECTION 3. That Evanston Railway Company. shall, at its own expense and within thirty (30) days from this date, remove from Howard Avenue its building containing a waiting room. 256 SECTION 4. That all pasts of ordinances in conflict with this ordinance, are hereby repealed. SECTION 5. That this ordinance shall be. in full force and effect from the date of its acceptance in writing by Evanston 'Railway Companlx- provided such acceptance be within ten (10) days from t e date of the adoption of this ordinance, and if written acceptance is not filed within ten (10) days from the date of its adoption, this ordinance shall be null and void. Adopted, by the City Council of the City cC Evanston on the 5th day of December A.D. 1922. Approved: Dec. 6, 1922 John F. Hahn, H,.P. Pearsons, City Clerk. Mayor. HE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON. SECTION 1. That hereafter all bonds which are now, or tray hereef ter be required by any of the ordinances of the City of Evanston, or by action of the City Council, shall be approved by the Corporation Counsel as to form, and by the City Clerk as to the financial responsibility, of. the sureties thereon, with the exception of bonds of City Officers, which, as heretofore, shall continue to be approved by the City Council, and all such bonds, Yhen so approved by the Corporation Counsel and the City Clerk, shall not require any further acti-on by the City Council. - All such bonds shall have endorsed thereon the approval of the Corporation Counsel and the City Clerk, and when so approved, shall be immediately filed in the office of the City Clerk: SECTION 2. It shall be the duty of the. City Clerk to require the sureties to justify separately upon blank forms, to be furnished by him for such purpose, and to be attached to the bond, that they are respectively worth the sums stated in their respective justifications, over and above all debts and liabilities by them owing, or incurred, or for which their property islia.ble, or encumbered at the time of jus tificatiom, and over and above all exemptions by law of their property from execution. Such justifi- cations shall further contain a description of all real estate or interests therein, owned by each surety, and the amount and date of. maturity of all encumbrances thereon, together with a list of all other bonds and similar obligations filed by each surety at the time, q till in force. The net property value in such justifications shall, in the aggregate, amount to not less than the penalty of the bond, and if, at any time, such net property value shall amount to less than the penalty of the bond, the principal obligator shall immediately furnish additional security satisfactory to the City Clerk, so that at all times the net property value scheduled by the surety or sureties on each bond, while in force, shall amount to not less than the penalty of such bond. Provided, however, that in lieu of such .sureties any surety company licensed to carry on business in Illinois, and at the time in good standing, may be accepted as surety on such bonds. SECTION 3. . All ordinances or parts of ordinances now in force, providing for, the approval of such bonds by the. City Council, shall continue to be in full force and effect in every respect, excepting only as to the method of the approval thereof, which method shall be as in this ordinance. SECTION. This ordinance shall be in effect from and after its passage and approval Adopted by the City Council of the City of Evanston on the 16th day of January A.D. 1923. Approved: Jany. 18, 1923. John ' F. Hahn, H.P. Pdarsons, City Clerk. May or . 1Zi9198 257 BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. The maximum gross weight hereafter to be per- mitted on the road surface of any street, alley or other public highway of the City of Evanston, through any two wheels on the same axle of any motor or other vehicle, shall not exceed sixteen thousand poundjs, nor shall it exceed eight hundred pounds per inch of width of ti're upon such wheels provided that toe gross weight, including the -weight of the, vehicle and the maximum load of any vehicle shall not exceed twenty-four thousand pounds; and the gross 'weight, .including the weight,of the vehicle and; the maximum load of any trailer or semi -trailer vehicle pulled or towed by a motor vehicle, shall not exceed thirty-two thousand pounds. SECTION 2. All motor vehicles and all trailers or other vehicles in tow thereof or thereunto attached, operating upon, along or` across the streets; alleys or improved public highways of the City of`Evanston,. shall have tires of rubber or some , material of equal resilience, provided that tires shall be con- sidered defective and shall not be permitted to be used if the, rubber or other material. has been worn or otherwise reduced to a thickness of less than three -fourths of an inch, or if such tires have been so worn or otherwise damaged as to cause undue vibration when the`article is in motion, or to cause undue concentration of the wheel load on the surface of the road; and provided further, that this reauirement shall not apply to agricultural tractors or traction engines of agricultural machinery, including wagons being used for agricultural purposes in tow thereof, or to trailers carrying agricultural products drawn by trucks, at a speed of not to exceed ten miles per hour, or to road rollers or road building machinery. SECTION 3. Any person, firm or corporation vioLating any of the provisions of this ordinance, upon conviction, shall be fined not less than Ten Dollars, nor more than Three Hundred Dollars for each offense. SECTION 4. All ordinances or parts of ordinances in cbn- flict with any of the provisions of this ordinance, are hereby rep e�aled9 SECTION 5. This ordinance shall be in full force and effect from and after its passage, approval and publication, according to law. .Adopted by the City Council of theCity of Evanston on the 6th day of Feby. A.D. 1923. Approved: Feby. 7th, 1923 John F. Hahn, H.P. Pears ons , City C1 erk. Published in News Index Mayor. February 9th, 1923*, AN ORDINANCE Amending an Ordinance entitled "An Ordinance to classify, Regulate and Restrict the locations of trades and industries and the location of buildings designed for - specified uses and to regulate and limit "the height and bulk of buildings hereafter erected, to regulate and limit the intensity of the use of Lot Areas and to regulate and determine the area of yards, courts and other open spaces within and surrounding such buildings, and to establish the boundaries of districts for the said purposes and prescribing penalties for the violation of its provisions." by classifying on the Use Map of sd d Ordinance adopted January 18, 1921, as an "A" Residence District instead of a "B" Residence District, certain described property pre- scribing penalties for a violation of its provisions: BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANST CN, ILLINOIS : SECTION 1. That the Ordinance entitled: "An Ordinance to classify, r egulate and restrict the locations of trades and indus- tries, and the location of buildings designed for specified uses and to regulate and limit the height and bulk of buildings hereafter 258 erected, to regulate and limit the intensity of the use of lot areas and to regulate and determine the area of yards, courts, and other open spaces within and surrounding such buildings and to establish the boundaries of districts for the said purposes and prescribing penalties for the violation of its 'provisions, " adopted by the City Council of the City of Evanston, January 18, 1921, be and the same hereby is amended as hereinafter ser forth. SECTION 2. That the district described a's : Lots 1 to 6 both inclusive, Compton's Resubdivision of Lot 1, Block 7 and lots 2 to 8 both inclusive in Pitner's Addition to Evanston in Block 7, a subdivision of a part of the Northeast Quarter, Section 24, Township 41 North, Range 13, commencing on the West line of the East Half of said Quarter Section 13, 13-1/3 chains North -of Southwest corner thereof, thence North 9.10 chains, thence East to East line of said East half, thence South 9.10 chains, thence West to point of beginning; also that part lying West of Ridge Road of South half, south half, Northwest Quarter, Northwest Quarter, Section 19, Township 41, North, Range 14,; and lots 10 2,3, and 4 in Block 1, Ridge Subdivision of South half of Southeast Quarter of the Northeast Quarter, and the South 217.90 feet of North half of Southeast Quarter of Northeast Quarter of Section 24, Township 41 North, Range 13, East of the Third Principal Meridian; otherwise known by street and house numbers as 1000-1046 inclusive, Asbury Avenue; 1300-1314 inclusive, Greenleaf Street; 1301-1315 inclusive, Lee Street, in the City of Evanston, Cook County, State of Illinois, and classified on the "Use Map" and on the "Area Map", said maps being a part of said Ordinance adopted January 18, 1921, as a "B" Residence District, be and the said districts are ,hereby changed to an "A" Residence District. SECTION 3. The penalties provided for in the said Ordinance adopted January 18, 1921, for a violation of 'any of its regulations and restrictions, applicable to an "A" Residence District shall be applicable to mid Ordinance am herein amended. SECTION 4. All ordinances or parts of ordinances in con- flict with any of the provisions of this ordinance are hE=eby repealed. SECTION 3. This ordinance shall be in effect from and after its passage, approval and publication, according to, law. Adopted by the City Council of the City of Evanston on the 6th day of Feby.A.D. 1923. Approved: Feby. 7th, 1923. John F. Kann, H.P. Pearsons, City Clerk. Mayor . ,Pub 1 i shed in Evanston News Index February 9th, 1923. IZ0198 259 BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON, ILLINOIS: SECTION 1. ' This maximum weight hereafter to be permitted on the road surface of any street,alley or other public highway of the City of Evanston, through ally two wheels on the same axle of any motor or other vehicles, shall not exceed sixteen thousand pounds, nor shall it exceed eight hundred pounds per inch of width of tire upon such wheels, provided that the gross weight, including the weight of the vehicle and the maximum load oT any vehicle shall not exceed twenty-four thousand pounds; and the gross weight, including the weight of the vehicle and and the maximum weight of the vehicle and the maximum load of any trail- er or semi -trailer vehicle pulled or towed by motor vehicle, shall not exceed thirty-two thousand pounds. SECTION 2. All motor vehicles and all trailers or other vehicles in'tow thereof or thereunto attached, operating upon, along or across the streets, alleys or improved public highways of the City of Evanston, shall have tires of rubber or some material of equal resilience, provided that the tires shall be considered defec- tive and shall not be permitted to be used if the rubber or other material has been worn or otherwise reduced to a thickness of less than three -fourths of an inch, of if such tires have been so worn or otherwise damaged as to cause undue vibration when the vehicle is in motion, or to cause undue concentration of the wheel load on the surface of the road; and provided further, that this requirement shall not apply to agricultural tractors or traction engines of ag- ricultural machinery, including wagons being used for agricultural purposes in tow thereof, or to trailers carrying agricultural pro- ducts drawn by trucks, at a speed of not to exceed ten miles per hour, or to road rollers or road building machinery. SECTION 3. Any person, firm or corporation violating any of the provisions of this ordinance, upon conviction, shall be fined not less than Ten Dollars, nor more than Two Hundred Dollars for each offense. SECTION 4. All ordinances or parts of ordinances in con- flict with any of the provisions of this -ordinances, are hereby re- pelaed. SECTION 5. This ordinance shall be in full force and effect from and fater its passage, approval and publication, according to law. Adopted by the City Council of the City of Evanston on the 6th day of Feby. A. D. 1923. Approved Feby filth 1923. JOHN F. HAHN, H.P.PEARSONS, City Clerk. Mayor rliblished in News Index, Feb. 9th, 1923. AN ORDINANCE making appropriations for corporate purposes for the fiscal year beginning January 1st and ending December 31st, 1923. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: Section 1. That the following sums, or so much thereof as may be authorized by law, be and the same are hereby appropriated for the fiscal year beginning January 1st, 1923, and ending December 31st, 1923. 1 DEPARTMENT OF PUBLIC WORKS. For salary of commissioner of public works and city engineer at $466.2/3-per month, $5,600.00 For maintenance of motor vehicle of commissioner of public works and city engineer at $40.00 per month for ten months, 400.00 For salary of• f irst assistant engineer at $275 per month, 3,300.00 For salary of,second assistant engineer at $175 per month, 2, 100.00 260 Dept. of Pub. Wks.Cond. For saluy of third assistant engineer at $140 per month, For salary of draughtsman at $175 per month, For salary of clerk at $110 per month, For salary of clerk of Board of Local Improvements at $25 per month, For salary of stenographer and clerk at $110 per month, For postage, stationery, maps, draughting material and instruments and mis- cellaneous supplies, For maintenace and supplies for two motor vehicles and for trading in one Stearns Knight touring car for a new Dodge Sedan car, For department's :share of --garage overhead, For freight, express and transportation, For sidewalk approaclAes, For special assessment blanks and forms, Total appropriation, Which includes receipts estimated to be received from engineering services, Also receipts estimated to be received from sewer permits, Also receipts estimtated to be received from grater permits, Also receipts estimated to be received from pole and heating mains permits, Also receipts from grade fees, estimated at Also miscellaneous receipts estimated at Also amount to be transferred from the Sevier Department, Also amount to be transferred from the Water Department, Also amount to be transferred from Small Parks Department, Add 5,% for probable deficiency arising in the collection of this appropriation, Total amount to be raised by taxation, IiEPARTMM OF BUILDINGS For salary of chief of inspections at $225 per month for four months at $275 per month for eight months, And while actin as building commissioner an additional 175 per month for four months • and $91 2/3 per month for eight months, For salary of zoning enforcing officer at $50 per month, For maintenance of motor vehicle of Building Commissioner at $40 per month, For salary of sanitary inspector at $215 per month, For maintenance of motor vehicle of sanitary inspector at $40. per month, For salary of fire alarm and police telephone electrician at $185 per month, For salary of electrical and building inspec- tor at $185 per month, For salary of permit clerk at 160. per month, For salary of stenographer at 190 per month, For extra labor in connection with boiler, elevator, building, smoke and miscellane- ous inspections, For maintenance and supllies for three motor . vehicles at $35 per month each, For postage, -stationery and miscellaneous supplies, For freight, express and transportation, For labor and material for maintenance of fire alarm telegraph system, For labor and material for maintenance of police telephone and flashlight system, For maintaining and improving storage battery and switchboard, 1,680.00 2,100.00 1,320.00 300.00 1,320.00 1,200.00 2,000.00 162.50 60.00 400.00 450.00 22,392.50 2,000.00 2,000.00 2,500.00 400.00 300.00 100,00 1,000.00 49000.00 1,000.00 454.62 3,100.00 11033.33 600.00 480.00 2,580.00 480.00 20220.00 2,920.00 1,920.00 1,080.00 3,020.00 1,260.00 1,036.25 250.00 400,00 800.00 200.00 $ 9,547.12 149198 Dept. of Bldgs. Cond. 261 For garage supervision three cars at $81.25 per year, 243.75 Total appropriation, $ 22,923.33 Which includes,estimated receipts to be re- ceived from building permits, 8,000.00 Also receipts from electrical permits, inspec- tions, and registrations, estimated at, 5,000.00 Also receipts from plumbing and gas fitting permits and inspections, estimated at, 3,473.33 Also receipts from b6iler, elevator, smoke and miscellaneous permits and inspections, estimated,at, 1,800.00 Also amount to be transferred from fire de- partment for supervisions, labor and material from maintaining fire alarm telegraph system, 1,500.00 Also amount to be transferred from police de- partment for supervisions, labor and ma- terial for maintaining police telephone and flashlight system, 2,360.00 Also amount to be transferred from Street Light- ing for supervision of "Traffic Signals", and "Davis and Main Street -District Light- ing+l , 250.00 Also amount to be transferred from Water Depart- ment for work of permit clerk, 600.00 Total appropriation, $22,923.33 SEWER DEPARTMENT For salary of forenab at $160 per month, for six months and $175 per month for six months., 2,010.00 For labor, 9,078.00 For maintenance, and. supplies for three motor vehicles and tools including trading in one Ford roadster for new Ford roadster, 1,500.00 For departmentlo share of garage overhead, 243.75 For new material, 800.00 For transfer to Department of Public Works, 1.000.00 , Total appropriation, 14,631:7 5 Which includes receipts estimated to be re- ceived from underground work done by the department, 600.00 Add 5°o for probable deficiency arising in the collection of this appropriation, 701,58 Total amount to be raised by taxation, 14,733.33 STREET LIGHTING For 850 overhead and underground lights (including, city's portion of light- ing Sheridan Place), 409450.00 For ornamental lighting Davis Street Dis- trict, 300.00 For ornamental lighting 11ain Street Dis- trict, 150.00 For lighting safety islands, 400.00 For new subway posts and signal lights and connecting safety lights with street lighting system, 775.00 For ornamental lighting Fountain Square, 400.00 For transfer to Department of Buildings for labor,,- 250.00 Total appropriation, 42,725.00 Which includes amount to be paid by North- western Elevated Railway Company for 1922 and 1923, 10600.00 Also amount to be paid by Chicago & North Western Railway Company for 1922 and 1923, 3,305.00 Add 5% for probable deficiency arising in the collection.of this appropriation, 1.891.00 Total amount to be raised by taxation, $ 399711.00 262 DEPARTMENT OF STREETS For salary of commissioner at $325 per month for four months and $391 2/3 per month for eight months, 40433.33 For maintenance of motor vehicle of com- missioner of streets at $40 per month, 480.00 For salary of one foreman at $160 per month for six months and at $185 per month for six ,months, 2,070.00 For salary of one foreman at $160 per month for six months and- at $175 per month — for six months, 2,010.00 For salary of clerk and stenographer at $135 per month, 1,620.00 For salary of barnman at $100 per month, 1,200.00 For salary of watchman at $90 per month for six months and at $100 per month for six months, 1,140.00 For salary of clerk and weigh master at $135 per month for ten months, 1, 350.00 For salary of alley inspector at $135 per month for ten months, 10350.00 For salary of garage superintendent at $225 per month for ten months, 2,250.00 For salary of dey mechanics at $175 per month far ten months, 1,750.00 For salary of night mechanic at $160 per month for ten months, 1,600.00 For labor, 42,435.00 For purchase and maintenance of horses, harness, wagons, tools and general supplies and removing and burying dead animals, 6,000.00 For maintenance and repair to motor trucks and automobiles, 250200.00 For snow plowing and plows, 500.00 For sidewalk repairs, 500.00 For purchase .of new equipment, 20500.00 For maintenance, tools and equipment for garage, . 2.000.00 . Total appropriation, 100:388.33 Which includes amount to be transferred from Public Works Department, for gasoline and oil, estimated at 900.00 Also amount to be transferred from Water Department, gasoline and oil, estimated at 1,300.00 Also amount to be transferred from Small Parks Department, team hire, gasoline and oil, estimated at 1,000.00 Also amount to be transferred from Sewer Department, gasoline and oil, esti- mated at 900,00 Also amount to be transferred from health Department, gasoline and oil, esti- mated at. 1,800.00 Also amount to be transferred from Depart - went of Buildings, gasoline and oil, estimated at 1,000.00 Also amount to be transferred from Police Department, gasoline and oil, estimated at 1 .1,400.00 Also amount to be transferred from Fire Department, gasoline and oil, esti- mated at. 200.00 Also receipts.from street permits, estimated at 100.00 Also amount to be received from sale of one Ford truck, one automobile, junk and rubber, estimated at 200.00 Also amount to be received from maintenance of and supplies f or privately owned automobiles of city employees, estimated at 2,700.00 Also amount estimated to be received from Evanstmn Street Railway Company under contract with city, 9,000.00 110198 Dept. of Streets Cond. 263 Also amount to be transferred from. Street and Bridge Repair Department, esti- mated at Also amount to. be transferred from Garbage System, estimated at Add 5% for probable- deficiency arising in the collection of this appropriation, Total amount to be raised by taxation, PUBLIC BUILDINGS CITY HALL Fora salary, of janitor, at $110 per month, 1,320.00 For general supplies, 350.00 For heating, 730.00 For lighting and incidentals, 500.00 For general repairs and alterations,3,000.00 For contingent expenses, 250.00 38,170.00 7,020.00 1,734.92 $ 6,150.00 GROVE STREET STATION For heating, 505.00 For lighting and incidentals, 500.00 For general repairs and alterations, 900.00 1,903.00 FIRE STATION NO. 2 For heating, 700.00 For lighting and incidentals, 100.00 For general repairs and alterations, 500.00 1,300.00 FIRE STATION NO. 3 For heating, 600.00 For lighting and incidentals, 100.00 For general repairs and alterations, 200.00 900.00 DEPARTMENTAL BUILDINGS For heating, 3,000.00- For lighting and incidentals,. 500.00 For general repairs and alterations, 750.00 For salary.of janitor at $110 per month, 1,320.00 For supplies, 400.00 5,970.00 T,otal appropriation, 16,225.00 Vhich includes receipts from sale of coal to employees of city, estimated at 2,000.00 Add 5% for probable deficiency arising i•n the.collection of this appropriation, 711.25 POLICE DEPARTMENT For salary of chief of police at $300. per month for four months and at $333 1/3 per month for eight months, 3,866.66 For salary of captain at $175 per month .for six months and at $200 per month for six months, 2,250.00- For salary of detective sergeant at $165 per month for six months and at $185 per month for six months, 2,100.00 For salary of 6,.desk and patrol sergeants at $160 per month each for six months and at $180 per month each for six months, 12,240.00 For salary of 41 patrolmen at $150 per month each for six months and at $160 per month each for six months, 76,260.00 For salary of 4 motorcycle police at $150 er month each for six months and at 165 per month each for=:six months, 7,560.00 For salary of six new men at $125 per month each for three months, at $150 per month each for three months and at $160 per month each for six months, 10,710.00 For salary of policewoman and matron at $150 per month for six months and at $160 per month for six months, 1,860.00 36,/433.25 14,936.25 2 6 4 Police Dept. Cond., For salary .of 2 switchboard operators at $125 per month each for six months and at $145 per month each for six months, 3#240.00 For expenses and toll charges, 700.00 For extra help, 185.00 For salary of juvenile officer at $90 per month;1,080.00 For salary of janitor at $100 per month, 1,200.00 For salary of members of censor board, 10200.00 For secret service work, 500.00 For maintenance of automobiles and motorcycles,4,600.00 For stationery, printing and supplies, 800.00 For jail board, 800.00 For ammunition for police target practice, 300.00 For extra pay for officers who qualify in revolver practice for 1922, 696.00 For 4 new automobiles, 3 old ones in exchange, 3,788.00 For office fixtures, 200.00 For services and supplies for maintaining police telephone and flashlight system, 2.300.00 Total appropriation, 138,435.66 Which includes receipts estimated to be received from licenses, dog tax and fines, less amount to be credited to police pen- sion fund and firemen's pension fund, 18,000.00 Also amount estimated to be received from , censored films, . 1,300.00 Add 5% for probable deficiency arising in the collection of this appropriation, 5.956.78 Total amount to be raised by taxation, $125,092.44 FIRE DEPARTMENT For salary of fire marshal at $300 per month for four months and at $333 1/3 per month for eight months, 3,866.66 TRUCK CO. NQ.1 For salary of assistant fire marshal at $175 per month for six months and at $200 per month for six months, 2,250.00 For salary of lieutenant at $160 per month for six months an,d- O.t $180_'per'. month for six months, 2,040.00 For salary of 11 firemen at $150 per month each for six months and at $160 per month each for six months, 20,460.00 ENGINE CO. NO. 1 For sakay of. captain at $165 per month for six months and at $185 per month for six months, 2,100.00 For salary of lieutenant at $160 per month for six months and at $180 per month for six months, 2,040.00 For salary of motor engineer at $157.60 per month for six months and at $167.50 per month for six months, 1,950.00 For salary of assistant motor engineer at $152.50 per month for six months and at $162.50 per month for six months, 1,890.00 For salary of 9 firemen at $150 er month each for six months and at.160 per month each for six months, 16,740.00 ENGINE CO. NO. 2 For salary of captain at $165 per month for six months and at $185 per month for six months, 2,100.00 For salary of lieutenant at $160 per month for six months and at $180 per month for six months, 2,040.00 For salary of engineer at $157.50 per month for six months and at $167.50 per month for six months, 1,950.00 For salary of assistant engineer at $152.50 per month for six months and at $162.50 per month for six months-,i 1,890.00 For salary of 8 firemen at 11PO per month each for six months and at 160 per month each for six months, 14,880800 z o i g s Fire Dept. Cond. 265 ' ENGINE CO. NO. 3 For salary of captain at $165 per month for six months and at 8185 per month for six months, 2,100.00 For salary of lieutenant at $160 per month for six months and at $180 per month for six months, 2,040.00 For salary of motor engineer at $157.50 per rionth for six months and at $167.50 per month for six months 1,950.00 For salary of assistant motor engineer at $152.50 per month for six months and at $162.50 per month for six months, 1,890.00 For salary of 6 firemen at $150 per month, each for six months and at $160 per month -each for six months, 11,160.00 For re -pairs, maintenance and supplies, 5,000.00 For purchase of new hose, 700.00 For service and supplies for maintaining .Sire alarm telegraph system, 1,500.00 Total appropriation, 102,536.66 Which includes amount to be raised from tax on fire insurance premiums,. less amount to be credited to the firemen's pension",und, estimated at, 1,700.00 Also amount to be transferred from -the Water Fund, 100.836.66 Total appropriation, 1022536.66 LEGAL EXPENSES For salary of corporation counsel at $300 per month for f our'months and at $350 per month for eight months, for all regal services exclusive of special •assessment proceedings, the compensation for which services shall be assessed as part of the cost of said proceedings and paid on confirmation thereof, as provided by law, 4,000.00 For sa'_ary•of city attorney at $75 per month for four months and at $100 per month for eight months, 1,100.00 .For legal expenses not otherwise provided for, 150.00 Total appropriation, 5,250.00 'Which includes receipts,.estimated to be received from assessments confirmed and on which fees have not yet been paid, 1,250.00 Add 5% for probable deficiency arising in the collection of this appropriation, 200.00 Total amount to be raised by taxation, HEALTH DEPARTMENT' For salary of helath commissioner at $150 per month, 1,800.00 For additional services as required by law, 300.00 For salary of food and dairy inspector at $200 per month, 2,400.00 For salary of health- inspector at $185 per month, 11 29220.00 For salary of bacteriologist and chemit;VI-at $100 per month, IS200.00 For salary of laboratory assistant at $120 per month, -. 1,440.00 For office supplies, 200.00 For laboratory chemicals and supplies, 250.00 For care of smallpox -patients, fumigating, vaccine virus, anti -toxin, maintaining ambulance and supplies, 200.00 For maintenance of four m'o:tor vehicles, 1,000.00 For department's share of garage overhead, 325.00 For food and dairy inspection, 100.00 For salary of one new inspector at $150 per month for ten months, 1,500.00 $ 40200.00 2 6 S _ Health Dept. Cond. Forrtrading in 3 old cars and purchase of 4 new ones, 10'458;80 For board of examiners of plumbers, 240.00 For medical inspection of schools, 1,500.00 For supervision of weights and measures 75.00 For infant welfare work, 6,700.00 For gasoline and oil (health commissioner), 100.00 Total appropriation, 23,008.80 Which includes amount estimated to be received from receipts from laboratory work done 'by the department, 300.00 Also amount to be received from board of examiners of plumbers, estimated at 400.00 Also amount to be received from examination of scales, estimaed. at 300.00 Also receipts to be received from registration of births 'and deaths, estimated at 423.00 Add 5% for probable deficiency arising in the collection of this appropriation, 1,079.29 Total amount to be raised by taxation, $ 22,665.09 CITY CLERK'S OFFICE. For salary of city clerk at $150 per month, 1,800.00 For salary of clerk and stenographer, at $125 per month, 1,500.00 For salary of messenger at $8.33 1/3 per month, 100.00 For blank books, stationery and supplies, 200.00 For new record books necessary for the work. of 1923, 50.00 For purchase of a new typewriter, 104.50 Total appropriation, Add 5% for probable deficiency arising in .30754.50 the collection of this appropriation, 187.72 Total amount to be raised by `taxation, 3,942.22 CITY COMPTROLLER'S OFFICE For salary of general clerk and stenographer at $225•per month, 2,700.00 For salary of clerk and stenographer at $160 per month, 1,920.00 For blank books; stationery and supplies, 250.00 For purchase of -new Remington typewriter, old in exchange, 100.00 Total appropriation, 4,970.00 Which includes amount to be transferred from special assessments, estimated at 150.00 Also amount to be received from Evanston Street Railway Company, for auditing, 500.00 Add 5% for probable deficiency arising in the collection of this appropriation, 216.00 Total amount to be raised by taxation, • 4,536.00 CITY COLLECTOR AND SUPERINTENDENT OF SPECIAL ASSESSMENTS' OFFICE. For salary of city collector and superin- tendent of special assessment at $300 per month, 3,600.00 For salary of clerk and stenographer at $125 per month, 1,500.00 For salary of clerk at $95 per month,- 1,140.00 For salary of clerk at.$90 per month, 1,080.00 For postage, - 1,000.00 For blank books, , sta.tionery and supplies, 850.00 For checking ownership book to date, 75.00 For additional help, 1,000.00 For burglary insurance, 11.00 Total appropriation, 10,256.00 Which includes receipts from all the assessments spread and confirmed on which fees have not yet been paid, estimated at, 1,500.00 Also/special assessment collections for -estimated at, 1,700.00 11t9198 City Collector-Cond., 267 Also amount for rebating assessments, estimated at, 100.00 Also amount to be transferred from the Water Fund, 1,000.00 Add 5% for probable deficiency arising in the collection of this appropriation, 297.80 Total amount to be raised by taxation, � PRINTING For printing not otherwise provided for, 1,322.00 Total appropriation, 1,322.00 Add 5% for probable deficiency arising in the collection of this appropriation, 66.10 Total amount to be raised by taxation, SALARIES OF CITY OFFICERS For salary of mayor at $333 1/3 per month, 4,000.00 For salary of treasurer at $50 per month for four months and $150 per month for eight months, 1,400.00 For office help, supplies and incidental expenses -of Treasurer's office, 3,600.00 For aldermen at $10 each and page at $2 per meeting, 3,408.00 Fro stenographer at $5 per Council session, 120.00 Total appropriation, 12$28.00 Which includes interest on public funds, estimated at, 3,500.00 Add 5% for probable deficiency arising in the collection of this appropriation, 451.40 CIVIL SERVICE COMMISSION For salary of three commissioners at $75 each, 225.00 For salary of chief examiner at $25 per month, 300.00 For expenses of the commission for clerk hire, printing, telephone, stationery and incidental expenses, 300.00 Total appropriation, 825.00 Add 5% for probable deficiency arising in the collection of this appropriation, 41.25 Total amount to be raised by taxation, MISCELLANEOUS FUND For the payment 'of :judges and -. clerks of election, -election printing and rent of rooms for the municipal election to be. held April 3, 1923; 1, 500. 00 For salary of general clerk under comp- troller's Airection at $116 per month, 1,320.00 For Workmen's Compensation and Employers' Liability insurance, 2,000.00 For improvements to fire alarm telegraph and police telephone and flashlight systems, 3,500.00 For support of widows and orphans of soldiers and sailors as.per requisi- tions of John A. Logan -Po st', ' 900.00 For Evanston Historical Society, 50.00 For Evanston Hospital Association, for services, I 1 350.00 For St. F$ancis Hospital Association, for services, 350.00 For Visiting Nurse Association, for services, 150.00 For Evanston Sanitarium and Training School for services, 250.00 For zoning expenses, 700.00 For mayor's contingent fund, 6000,00 For tax investigation, 31,600.00 For auditing of .city books, 500.00 6,253.80 it388.10 $ 9,479.40 866.25 268 68 Miscellaneous,Continued. For city's share of special assessments, Total appropriation, Add 5% for probable deficiency arising in the collection of this appropriation, Total amount to be raised by taxation, CONTINGENT FUND For contingent expenses not included in appropriation to cover unf orseen requirements, accidents, etc., Total appropriation, Add 5% for probable deficiency arising in the collection of this appropriation, Total amount to be raised by taxation, WATER DEPARTMENT NT PUMPING STATION For salary of superintendent of water department at $250 per month for six months and at $333 1/3 per month for six months, For salary of first assistant engineer at $175 per month for six months and at $200 per month for six months, For salary of second assistant engineer at $165 per month for six months and at 1175 per°month for six months, For.salary of third assistant engineer at : :$165, per -month for six months and at ;$175, per month for six months, For salary of,three firemen at $150 per month each for six months and at $160 per -month each for six months, For salary of two oilers at $150 per month each for six months and at $160 per month each for six months, For salary of machinist at $150 per month for six months and at $160 per month for six months, ,Vor salary of,two relief men at $150 per month each for six months and at $160 per month each for six months, For maintenance of motor vehicle of superin- tendent,of water department at $40 per month for 12 months, less credit of $90 for Ford Roadster to be sold, For fuel, For oil and waste, For lights and lighting, For repairs and tools, For repairs to buildings, For repairs to intake, For sinking fund for depreciation, For repairs to -boilers and engines and incidentals, For completing and equipping boiler room alterations, For contingent bond issue to provide funds to pay the cost of purchase and install- ation of additional pumping apparatus and equipment for municipal water works, FILTRATION PLANT For salary of first operator at $165 per month for six months and at $175 per month for six months, For salary of three ordinary operators at $150 per month each for six months and at $160 per month each for six months, For extra, help, For chemicals for filtration plant, For laboratory supplies. For electric light and supplies, For general repairs and alterations, For material and supplies, 210.00 15,980.00 799.00 $ 16,779.00 14.000.00 14,000.00 700.00 0 14,7 00.00 3,500.00 22250.00 2,040.00 2,040.00 5,580.00 3,720.00 1,860.00 3,720.00 390.00 23,000,00 700.00 100.00 1,200.00 20 000.00 2,000.00 18#546.52 20000.00 5,000.00 7 5.000 r 00, 29040.00 5,580.00 600.00 4,500.00 .250.00 75.00 1,200.00 300.00 1541646.52 1Z0198 269 Water Dept. Filtration Cond. For contingent bond issue to provide funds to pay the cost.of enlarging filtration plant, 275,000.00 289,545.00 WATER MAINS DEPART20NT For salary of assistant superintendent at $1.65 per month for six months and at $175 per month for six months, 2,040.00 For salary of four,mechanics at $135 per month each for six months and at $140 per month each for six months, 60600.00 For ,extra help, 1,500.00 For maintenance and supplies for one motor truck, _ 700.00 For department's share of garage overhead, 81.25 For maintenance of horses, harness, wagons and tools, 10000.00 For maintenance and repairs to water mains system, 5,000.00 For lowering of water mains, 7,000.00 For installing 30" feed main, Orrington and Sherman Avenues, 209000.00 For sinking fund,for additional water mains, 5.000.00 48,921.25 RATES AND INSPECTIONS For salary of clerk at $100 per month, 1,200.00 - For department's share of work of permit clerk, 600.00 For salary of water officer at $160 per month, for six months and at $175 per month for six months 2,010.00 For salary of water inspector at $135 per month for six months and at $150 per month for six months, 1,710.00 For salary of meter man at $135 per month for six months and at $150 per month for six months, 1,710.00 For salary of meter reader at $135 per month, 1,620.00 For maintenance and supplies for two motor vehicles, including trading in one Ford Roadster for Dne. new Ford Roadster, 900.00 For department's share of garage overhead, 162.50 For meter repair parts, 9,000.00 For miscellaneous expenses of meter department, 50.00 For blank water rolls, receipts, tax notices, stationery and supplies, 10000.00 For contingent expenses of water department, 500.00 20,462;50 For transfer to Fire Department; 100,836.66 For tranfer to Public Works Department 4,000.00 For tranf er to City aollector's Office, 1.000.00 105,836.66 � 619,411.93 Which includes unexpended balance of 1922, 38,411.93 Also estimated receipts from water tax, re- ceipts from use of water in connection with building and sidewalk permits and contract with Wilmette, all of which is specifically, appropriated for the water department, 2100000.00 Also miscellaneous receipts, estimated at, 12, 000.00 Also receipts estimated to be received from sale of meters and parts, 9,000.00 Also receipts estimated to be received from sale of bonds, 350.000.00 Total appropriation, $ 619,411.93 INTE119ST ACCOUNT For library site bonds, 84.00 For library building bonds, 200.00 For municipal building bonds, 1,440.00 For departmental building bonds, 640.00. For water works betterment bonds, 5,400.00 For lake shore improvement bonds, 1,000.00 For fire apparatus and equipment bonds, 500.00 Total -appropriation, 9,264.00 Add 5% for probable deficiency arising in the collection of this appropriation, 463.20 Total amount to be raised by taxation, $ 9,727.20 2'7 SINKING FUND For payment of bonds: For library site bonds, 2,100.00 For departmental building bonds, 2,000.00 For water works betterment bonds, 5,000.00 For library building bonds, 2,500.00 For lake shore improvement bonds, 5,000.00 For fire apparatus and equipment bonds, 5,000.00 For municipal building bonds, 8.000.00 Total appropriation, 29,600.00 Add 5% for probable deficiency arising in the collection of this appropriation, 1,480.00 Total amount to be raised by taxation, $ SPECIAL FUNDS PUBLIC LIBRARY For salaries of employes and sundry expenses,45.270.00 Total -appropriation, 45,270.00 Which includes amount estimated to be received from special tax of one and eight tenths mills on the dollar for library purposes, as provided by law, 45.270.00 Total appropriation, 45,270.00 FIREMEN'S PENSION FUND. For payment of pensions and sundry expenses, 7.321.58 Total appropriation, 7,321.58 Which includes unexpended balance of 1922, 602.09 Also receipts estimated to be received from tax on insurance premiums (*), 1,700.00 Also receipts estimated to be received from 1% of licenses, 100.00 Also receipts estimated to be received from 1% of salaries 500.00 Also amount .estimated to. be received from special tax of two -tenths of a mill on the dollar for firemen's pension fund, as provided by law, 4.419.49 Total appropriation, 7,321.58 POLICE PENSION FUND. For payment -of pensions and sundry expenses, 13.519.66 Total appropriation, 139519.66 Which includes unexpended balance of 1922, 590.42 Also amount •t o be received from 10% of regular licenses, estimated at, 1,100.00 Also amount •estimated' to' be received from 3/4 of dog licenses, 700.00 Also amount estimated to be received from 10% of regular fd.nes, 800.00 Also amount estimated to be received from 10% of automobile fines, 600.00 Also amount estimated to be received from 1% of salaries, 900.00 Also amount :estimated to be received from interest on bonds, 2,200.00 Also amount estimated to be received from special. tax of three -tenths of a mill on the dollar for police pension fund, as provided -by law, 6.629.24 Total appropriation, 130519.66 GARBAGE SYSTEM For department's share of superintendence and clerical help, 2,800.00 For labor, 17,730.00 For coal and -supplies, 4,800.00 For repairs to incinerator, 1, 500.93 For tranfer to Department of Streets for use of horses, equipment, maintenance, supplies and department's share of overhead expense, 4,220,00 .Forrefund to special customers; 271.00 Total appropriation, 31,321.93 310080.00 lZ t " 9 8 Garbage System, Cond., which includes unexpended balance of 1922, 858.64 which includes also special garbage receipts, estimated at, 1,000.00 Which includes also receipts estimated to be received from special tax of one and one- third mills on the dollar on all taxable property in the City of Evanston, as provided by law, 29.463.29 Total appropriation, $ 310321.93 STREET AND BRIDGE REPAIR DEPARTMENT FOR THE TOWNSHIP OF THE CITY OF EVANSTON. For department's share of superintendence and clerical help, 69670.00 For equipment and tools, 119350.00 For replacement and repairs of bridges and maintaining streets, boulevards and highways, 27,600.00 For transfer to Department of Streets for use of horses, equipment, employes, supplies and department's share of overhead expense, 31,500.00 For maintenance and repairs to streets, 70,608.97 For ddpartment's share of municipal garage, 500.00 Total appropriation, 148,228.97 Which includes unexpended balance of 1922, 18,365.18 Which includes also receipts estimated to be received from wheel tax licenses, 350000.00 Which includes also receipts estimated to be received from automobile fines, 3,000.00 Which includes also amount estimated to be - received from repairing street open- ings, 2,000.007 Also receipts estimated to be received from special tax of two and four -tenths, mills on the dollar for street and bridge purposes and tax of sixteen and two-thirds cents on One Hundred Dollars of valuation to cover a con- tingency existing as decided by City Council, as provided by law, 89.863.79 Total appropriation, $ 148,228.97 SMALL PARKS For labor and teaming, 26,814.84 For hose and all supplies, 2,500.00 For athletic supplies, 500.00 For plants, trees, shrubs and vines, 1,500,00 For water supply and drainage, 250,00 For upkeep and improvement of buildings, 300.00 For fencing grounds and walks and drives, 250.00 For lighting, heating and.telephone, 1,000.00 For maintenance and repairs to automobile, including trading in one Ford Roadster for one one -ton truck, and including team hire and feed, 1, .500.00 For department's share of garage overhead, 81.25 For insurance, 8.40 For overdraft of 1922, 3,340.45 For small park's share of special assessments, 1,150.00 For patrolling and cleaning beaches, 1,500.00 For small park's share gf expense of Public Work's Department, 1,000.00 For construction of fences for lake shore protection, 1,500.00 For interest on indebtedness and taxes on park property, 1,000.00 For contingent bond issue to provide funds to pay the cost of improving Boltwood Park, 50,000.00 For contingent bond issue to provide funds to pay the estimated cost amounting to $150,000.00 of acquisition for park purposes by purchase or condemnation of private lands bordering on Lake Michigan, 2'71- 272 Small parks, Cond. including riparian rights; part of said lands lying East of Sheridan Square and between Keeney Street and South Boulevard and the remainder thereof lying East of Sheridan Road and between South Boulevard and the North line of Calvary Cemetery extended East; and also in like manner at an estimated cost.of $30,000.00 to acquire lands for park purposes in the Sixth Ward, Total appropriation, $ Which includes amount estimated to be received from special tax of two mills on the dollar for park purposes, as provided by law, Which includes also amount estimated to be received from sale of bonds, Total. appropriation, PLAYGROUNDS For equipment, conduct and maintenance of the following named and loc- ated public playgrounds in the City of Evanston: MASON PARK, BOUNDED ON the north by Church Street, obi the East by Florence Avenue, on the South by Davis Street and on the West by Dewey Avenue. ACKERMAN PARK, bounded on the North by Central Street, on the East by Elm Avenue, on the West by McDaniel Avenue and on the South by the public alley between Central Street and Harri- son Street. ELLIOT PARK, bounded on the North by Hamilton Street, on the West by Lake Shore Boulevard, on,the South by Green- leaf Street and on the East by Lake Michigan. LAKE FRON PARK (1). bounded on the North by University Place, on ,the South 'by Greenwood Boulevard, on_the West by Sheri- dan Road and on the East by Lake Michigan., LAKE FRON PARK.(2) bounded on the North by Greenwood Boulevard, on the West by Lake Shore Boulevards, on the South by Hamilton Street and on the East by Lake Mich- igan. 180,000.00 274,194.94 44,194.94 230.000.00 274,194.94 BOLTWOOD PARK bounded on the South by Main Street, on the East by Florence Avenue, on the West by Dodge Avenue and on the North by Lee Street, 29.486.17 Total'appropriation, $ 29,486.17 Which includes amount estimated to be received 'from special tax of one and one-third mills on each dollar of assessed valuation of all tax- able property within the corporate limits of the City of Evanston, as provided'by law, 29.486.17 Total appropriation, $ 299486.17 110198 2'73 SUMMARY OF GENERAL FUND Unexpended balance re -appropriated, 38,411.93 Resources other than taxation (exclusive of transfers), 360.891.33 399t303.26 To be raised by taxation: For general purposes, 309,774.54 Add 5% for probable deficiency arising in the collection of this appropriation, 15.488.71 3259263.25 For bonds and interest, 38,864.00 Add 5% for probable def ici ency aris;. ng in the collection of this appropriation, 1.943.20 40.807.20 Total appropriation for general purposes, 765,373.71 SUMMARY OF SPECIAL FUNDS Unexpended balances re -appropriated, 20,416.33 Resources other than taxation, 49,600.00 To be raised by taxation, 249.326.92 Total appropriation -for special purposes, 319.343.25 Total appropriation, 10084,716.96 Including Contingent.Bond Issues, 580.000,00 Grand total appropriation, 1,664,716.96 AMOUNTS TO BE RAISED BY TAXATION General Fund, 325,263.25 Bonds and interest, 40,807.20 Special Funds, 249.326.92 Total by taxation, 615,397.37 Section 2. This ordinance shall be in full force and effect from and after its passage, approval and publication ac- cording to law. Adopted by the City Council of the City of Evanston on the Sixth day of February, A. D. 1923. JOHN F. ' HAHN, - City Clerk. Approved February 8th, A. D. 1923. H. P. PEARSONS, Mayor Published in : News -Index, Feb. 12th, 1923. 2"74 RECOM IMIDATION, . ESTIMATE and ORDINANCE. RECODENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and*Aldermen of the City of Evanston in the City Council Assembled: We herewith submit an ordinance providing that the roadway of Sheridan Square, also the roadways of the intersecting alleys lying within said Sheridan Square and not included in the roadway thereof, in the City of Evanston, County of _Cook, State of Illinois, be improved by grading -,curbing with a Portland Cement Concrete Curb, paving with a bituminous macadam pavement laid on a Portland Cement Concrete base or^foundation, constructing catch basins, catch basin connections to sewer, adjusting manholes and valvechambers; together with an estimate of the cost of said improvement and recommend the passage of said ordinance and the making of the improvement contem- plated therein. Respectfully submitted, H. P. PEARSONS Wm. BLANCHARD HAL W. SMITH Board of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, Illinois. February 6th, 1923. ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that the roadway of Sheridan Square, also the roadways of the intersecting alleys lying within said Sheridan Square and not included in the roadway thereof, in the City of Evanston, County of Cook, State of Illinois, be improved by grading,'curbing with a Portland Cement Concrete Curb, paving with a bituminous macadam pavement laid on a Portland Cement Concrete base or foundation, constructing catch basins, catch basin connections to sewer, adjusting manholes and valve chambers; and presented to the City Council of the City of Evanston, a re- commendation that such improvement be made, I herewith submit an estimate of the cost of such improvement, as described in said re- solution, including labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment as provided by law, viz: 41 ESTIMATE OF COST. 1400 Cu. yds. of grading @ $1.60 per cu. yd.............$ 2600 Lin, ft. of Portland Cement Concrete Curb laid complete in place @ $1.25 per lin. ft.............. 5100 Sq. yds. of Portland Cement Concrete base or foun- dation laid complete in place @ $1.80 per sq. yd... 5100 Sq. yds. of bituminous macadam paving laid com- plete in place @ $1.40 per sq. yd.................. 10 Brick catch basins, including cast iron covers, plank bottoms, excavation and back filling complete in place @ $80.00 each.. .... .. .... .. 200 Lin. f t. of 9" internal diameter, vitrified, salt lazed, tile pipe catch basin connections to sewer average depth of cut six (6) feet including trench- ing and back filling laid complete in place @$1.00 per lin. ft............... .. ..... ........... 5 Manholes adjusted to grade @ $12.00 each.......... 2 Valve chambers adjusted to grade @ $12.00 each.... 29240.00 3,250.00 9,180.00 7,140.00 " 800.00 200.00 60.00 24.00 IZ0108 275 For lawful expenses attending the proceedings for malting said improvement and the cost of makin and collecting the assess ment.therefor, not to exceed six 16) per centum of the above, to-wit:$22,894.00 .............................. .. 1.373.64 Total. ...................$ 24,267.64 And I hereby 'certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improvement and the lawful expenses attending the same. 1. Wm. BLANCHARD Engineer of the Board of Local Im- provements of the City of Evanston. Dated, Evanston, Illinois. February 6th, 1923. �AN ORDINANCE. Providing that the roadway of Sheridan Square, also the roadways of the intersecting alleys lying within said Sheridan Square and not included•in the roadway thereof, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, curbing with a Portland Cement Concrete Curb, paving with a bituminous macadam pavement laid on a Portland Cement*Concrete base or foundation, constructing catch basins, catch basin connections to sewer, adjust- ing manholes and valve chambers. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON. SECTION I. That a local improvement shall be made within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local improvement is as follows, to -wit: That the roadway of Sheridan Square, also the roadways of the intersecting alleys lying within said Sheridan Square and not included in the roadway thereof, in the City of Evanston, County of Cook, State of Illinois, be and the same are hereby ordered im- proved as follows: LOCATION OF ROADWAYS. The center line of the roadways herein provided to be paved shall coincide with the center line of the respective street and alleys within which said roadways are included. 77IDTH OF ROAMAYS The width of the roadways herein provided to be paved shall be as follows, measured in feet from back to back of the curb here- inafter specified and at right angles to the center line of the re- spective street or alley, as the case may be, to -wit: Sheridan Square: At the south end thereof At the west end thereof 36 feet. 36 feet. The width of roadway at intermediate points shall be re- spectively proportional to the foregoing. GRADE OF ROADWAY AND CURB The grade of the roadways herein provided to be paved, when finished, and the grade of the top of the curb hereinafter speci- fied, when completed and set in place, are hereby established as follows, measured in feet and decimal parts of a foot above the datum plane of the City of Evanston, to -wit: Transverse Section of Roadway. Crown Line. Gutter Line. Top of Curb. Sheridan Square: At the south end thereof I 1 10.25 9.80 10.05 276 (Crown Line) (Gutter Line) (Top of Curb) f At one hundred.twelve (112) feet north of the south end thereof . ' 9.73 9.18 9.93 At two hundred twelve (212) f eet north 'of the south 'end' thereof. 10.20 9.75 10.00 At three hundred eighty-seven (387) feet north of the South end thereof. 9.10 8.55 9.30 At four hundred thirty-nine (439) feet north of the South end thereof. 19.46 9.00 9.25 At six hundred eighty-eight (688) feet north of the South end thereof. 8.30 7.75 8,50 At seven hundred eighteen (718) feet north of the South end thereof. 8.70 8.25 8.50 At three hundred eighty-two ' (382) feet east of Sheridan Rd.8.70 8.25 8.50 At three hundred forty (340) feet east of Sheridan Road. 8.30 7.75 8.50 At one hundred seventy-five (175) feet east of Sheridan Road. 10.13 9.68 9.93 A,, one htandred forty (140 ) feet east of Sheridan Road 9.80 9.25 10.00 At the east line of Sheridan Road. 11.45 11.10 11.35 The grade of the crown line, gutter line and top of curb at intermediate points shall be respectively proportional to the foregoing. The datum plane hereinafter mentioned is the plane of low water mark of Lake Michigan in the year A. D., 1,047, as established by the Trustees of the Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the north-west corner of Davis Street and Sherman Avenue, in said City of Evanston. The crown line hereinbefore mentioned shall be identical with the center line of the respective road- ways when completed. The gutter line hereinbefore mentioned shall be identical with the line where the surface of the road- ways when completed touches the face of the curbing on both sides of the respective roadways. The surface of the roadways herein provided to be paved when completed shall conform to the arc of a circle passing through the respective crown and gutter lines, and shall be true and symmetrical. GRADING Prio- to laying down the pavement thereon, the roadways specified to be paved shall be cleaned in a thorough and workmanlike manner of all debris and rubbish, such as deteriorated pavements, crossings, box drains, culverts Wtumps, etc. The sub -grade shall be prepared by excavating the soil, or filling thereupon with other and suitable soil to such depths and shapes as will insure the finished pavement being at the grade established therefor. Spongy earth that is unfit to be left in the sub -grade shall be removed by the con- tractor without extra charge. The Sub -grade shall be rolled with a suitable self-propelling roller or flooded with water, or both as may be found necessary and practicable to thoroughly compact same. Any depressions that may appear as the rolling or flooding cf the sub -grade progresses shall be filled upon at the surface with suitable soil and thoroughly corn, pacted as before specified. a 19198 _- Ordinance or contract Form. Paving. ,r (a) e CONCRETE CURB 2'7'.7 A concrete curb shall be constructed on both sides of the respective roadways herein provided to be paved. Said curb shall consist of a mixture, by volume, of one part of Portland cement, two parts of sand and four parts of crushed gravel or stone. Except that the top and exposed roadway face of the curb shall be surfaced to a depth of one-half inch with a mortar composed of two parts of Portland cement and three parts of clean, sharp sand of the sizes and quality hereinafter specified for the sand to be used in making this curb. The crushed gravel or stone specified for the body of the curb shall be clean, hard, free from dust, loam, vegetable or other deleterious matter, and shall show sharp edged cubical fracturing. This crushed gravel or -stone shall be of variable sizes, grading from a maximum dimension of one inch down to a minimum of one-fourth inch, and so proportioned that the particles capable of passing through a screen of three -fourths inch mesh will fill the voids in the particles retained on such size screen, but without more than ten per cent excess of the smaller paroles. The sand specified for the curb shall be free from clay, loam, vegetable or other deleterious matter. The grain shall be angular, and shall range in size from one -quarter inch down to the finest, but not more than 3 per cent shall pass through a seive having (100) one hundred meshes per lineal inch. The sand shall be of such quality that mortar composed of one part of the cement hereinbefore specified and three parts of the sand, by weight, when made into briquetts, will develop a tensile strength at least equal to the strength of a mortar of the same consistency and proportions made with the same cement and Standard Ottawa sand. The Portland cement specified for the "curb shall be of such quality that representative samples collected form the shipments made for the job shall be capable of passing the tests for fineness, soundness, initial setting, and tensile strength hereinafter set forth for Portland cement. The sand and crushed gravel or stone shall be clean when delivered on the job and shall be kept clean until used. In no case shall the sand and crushed gravel or stone when used, contain frost or lumps of froz- en matter. Forms shall be used in constructing the curb. The forms shall be sound, free from warp, and of suffici- ent strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established lines and grades. Wooden forms shall be thoroughly wetted and metal forms shall be oiled be- fore concrete is deposited against them. All mortar and dirt shall be removed from forms that have pre- viously been used. The ingredients specified for the body of the curb shall be mixed in a batch machine mixer of a type that will insure a uniform mixture and product. Clean water, free from oil, acid, alkali, or vegetable matter shall be admitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the crushed gravel or stone from the mortar. Provided, that on such portions of the work as it may be imprac- ticable to use the machine mixer, thorough and efficient hand mixing will be allowed. The equipment used, if any, for hand mixing shall be as specified for mixing the surfacing mortar. The ingredients specified for the mortar to be used in surfacing the top and exposed roadway face of the curb shall be mixed on a movable, tight iron platform, of ample size to accommodate the manipulations specified, without getting the ingredients off the platform or mixed with dirt. The Portland cement and sand specified for surfacing portions of the curb shall be thoroughly mixed on the platform with hoes or shovels, and until the color becomes uniform, after which sufficient water, of the quality hereinbefore required, shall be gently added, while the mixing continues, to produce a stiff and homogeneous mortar. The concrete and the finishing mortar after being prepared as specified shall be promptly deposited and compacted in the forms, in layers not exceeding six inches in depth. The back of the curb shall be worked with a spade to secure a well filled surface. The front upper edge of the curb shall be rounded to a radius of one and one-half inches in such manner that the planes of the top and roadway face of the curb will be tan- gent to the curve described by said radius. As soon as the cement has sufficiently set, the forms shall be re- moved from the face of the curb; and the face mortar shall be promptly troweled down hard and smooth, drawing 'the cement from the crushed gravel or stone as little as possible. The gloss shall be removed with a wet brush. CONCRETE CURB —Continued Ordinance or Contract Form. Paving. (b) The curb shall be constructed in sections not less than four feet nor more than six feet in length. In con- structing the curb, all templates used to form theosections shall be kept perpendicular to the top of the curb. All joints shall be neatly tool .finished. The joint marking shall correspond to the joint made by the tem- plates. The curb shall be twenty-four inches in depth, and the thickness shall vary uniformly from six inches at the top to eight inches at the bottom of the curb. The curb shall be built in such manner that the road- way face will be vertical; that the t op will be at the grade hereinbefore established; and that the back of the curb, at the top thereof shall be on the lines hereinbefore established. The curb at intersecting streets and alleys shall be constructed to true curves tangent to the intersecting curb lines proper. The radius of the curve to which the back of the curb shall conform shall be ten feet for intersecting street and six feet for intersecting alley curb lines. Except as above specified, for intersecting street and alley curb lines, the curb shall be constructed paralleled to the center line of the respective road- ways herein provided to be paved. The curb shall be constructed at such distances from the center line of the roadways, herein provided to be paved, as will give the respective width of roadways hereinbefore speci- fied and established, when measured from back to back of curb in the manner and on the lines hereinbefore set forth. Trenches shall be excavated to sufficient width and depth to receive the curb and necessary moulding frames. Wherever other than sandy soil is encountered the curb trenches shall be excavated to a depth of six inches below the bottom of the curb and shall be re -filled to such depth with sand or cinders. The sand or cinders shall be compacted with water or by hand tampers. The frames shall be securely fastened in place and shall be accurately brought to line „and grade before they are filled with concrete. The grade and line to which the frames are to be set shall be such as is necessary to insure the finished curb being true to the lines and grades hereinbefore established therefor. PORTLAND CEMENT CONCRETE FOUNDATION Upon the sub -grade prepared as hereinbefore specified, shall be constructed a Portland cement concrete base or foundation, five (5) inches thick. The concrete shall be composed by volume, of one (1) part of Portland cement; three (3) parts of clean, hard grained, and sharp sand; and five (5) parts of clean, hard limestone or gravel broken or graded so as to yield a range of sizes (in longest dimension) from two (2) inches down to one-half (1-2) inch, and so proportioned as to produce a maximum number and minimum volume of interstices in the aggregate. The concrete shall be prepared by mixing the cement, sand and stone or gravel in an approved batch mixer with sufficient clean water and mixing sufficiently to produce a plasticity best suited to the condi- tions of weather and soil. 9 The concrete mixed as above specified, shall be promptly spread on the surface of the sub -grade to the required thickness, and to such shape and grade as will insure the upper surface of the foundation after be- ing thoroughly compacted by rolling or tamping, being parallel with and three (3) inches below the grade hereinbefore specified for the finished roadway. The upper surface of the foundation shall not be troweled smooth but shall be left moderately rough to grip the bituminous macadam pavement specified to be laid thereon. BITUMINOUS MACADAM PAVEMENT Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard, broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of three (3) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be evenly applied to the limestone ( at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one and three quarters (1 3-4) gallons thereof being evenly spread on and used in each and every square yard of the roadway, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size rang- ing from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diam- I eter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screen- ings the roadway so covered, shall be given a thorough rolling with a roller of the weight and type herein - before named. This rolling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. i�i9198 . 279 The surface of the roadway shall next be thoroughly cleaned of all loose stone, dirt, leaves or other, foreign material thereon. After being so cleaned there shall be evenly applied to the surface of the pavement a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread as to insure not less than three quarters (3-4) gallon thereof being evenly spread and used on each and every square yard of road- way. Immediately after the second application of asphaltic cement is made and spread and progressing ' therewith there shall be evenly spread on the surface of the roadway so treated, clean, dry, hard granite _1 chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one - eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of the roadway. A final rolling of the roadway shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the roadway 'is thoroughly compacted, and brought to a surface, free from de- pressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement herein provided to be built, shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller.is operating. The gutters shall be kept trimmed to the required thickness and grade as the work progresses. The cubic yardage of stone, herein required, shall be verified by measurement of volume thereof in cars, or other conveyances, transporting same to said City, and prior to initial unloading, and shall be fur- ther verified by measured length of dumps and height of grade marks on the work. The stone shall be hauled on to the work in boxes of uniform size and contents and of such shape as to enable an easy and exact determination of the volume contained therein to be made on the site. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following require- ments and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural as- phalt and a flux to be tested with and proven the beat suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical Ordinance or (b) Contract Form. BITUMINOUS MACADAM PAVEMENT properties and be so prepared for use as to best adapted to the climatic and traffic conditions of the roadway 1 on which it is to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit un- der, 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various Hydrocarbons composing it shall be pres- ent in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 96%. - (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98 /% shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in 75 degrees Baume petroleum naptha, at the air temperature to the extent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 percent nor more than 15 per cent of fixed carbon or residue coke. PIT 280 is Duplex Catchbasin for Paving. Ordinance or Contract. Sewer in Place. CATCHBASINS For .the purpose of receiving storm waters from the surface of the roadway or roadways, as the case may be, herein provided to be paved ten catchbasins shall be constructed at the necessary points along the sides of the afore- said roadway or roadways. Said catchbasins shall be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catchbasins, when in place, to the upper surface of the proposed curbing. Said catchbasins shall be cylindrical in shape having an internal diameter of forty-two (42) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty- four (24) inches at the top of the masonry by means of eight (8) header courses of brick laid endwise and horizon- tally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catchbasins. Said catchbasins shall have walls eight (8) inches thick, built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catchbasins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1/) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch - basins shall each rest on a solid bottom of two (2) inch pine planks laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure sixty (60) inches in diameter and shall have its upper side placed five and one-half (5/ ) feet below the upper surface of the brick wall for said catchbasins. Said catch - basins shall be connected with the sewer or sewers, as the case may be, now existing or herein provided to be con- structed, as the case may be, in and along the center line of the said roadway or roadways at the side of which the respective catchbasins are to be constructed. Said catchbasins shall be connected with the sewer or sewers aforesaid by ineans of vitrified, salt glazed, tile pipe having an internal diameter of nine (9) inches and of the type known as "Bell and Spigot" the metal of which pipe shall be thirteen -sixteenths (13/16) of an inch in thickness and shall be not less than two (2) feet in length. Said pipe shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipes shall be securely sealed -,vith a mortar of the quality herein required for brick walls in catch -basins. Each catchbasin connection shall start in a nine (9) inch vitrified, salt glazed, tile pipe "Y" branch of the quality and laid in the ]Wanner required for sewers, which "Y" branch shall be set in the sewer at a point not less than six (6) feet in advance of the catchbasin, measured along and in the downstream direction of the sewer from a point on said sewer directly opposite the catchbasin. The pipes shall be laid true to line and grade and the connection shall enter the catchbasin at a point two and one-half (2/ ) feet above the plank bottom. The pipe entering the catchbasin through the brick walls thereof shall be an elbow with the bell end turned downward inside the catchbasin to form a trap. The pipe shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be backfilled as soon as prac- ticable in order to occasion the least possible inconvenience to the public in use of the street. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catchbasins shall each be equipped and fitted with a castiron cover weighing not less than three hundred thirty (330) pounds and having a vertical height of thirteen (13) inches, which cover shall be of the same size and pattern or equal in size, quality and workmanship to the castiron covers now in use on existing catchbasins in Dempster Street between Ridge Avenue and Dodge Avenue in said City of Evanston. Said catchbasin covers herein provided to be furnished and -set shall rest on the walls of the catchbasins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required foi brick walls in said catchbasins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the elevations hereinbefore specified for the top of the curb at the points where said catchbasins are to be located. IZ19198 281 MANHOLES TO BE ADJUSTED AND BROUGHT TO GRADE The 5 brick manholes now located within the space herein provided to be paved, and which are already equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall' be made to the walls of said manholes as may be necessary to bring the covers of the manholes to the height above specified and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one- half (1/) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. VALVE CHAMBERS TO BE ADJUSTED AND BROUGHT TO GRADE The 2 brick valve chambers now located within the space herein provided to be paved, and which are already equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said valve chambers as may be necessary to bring the covers to the height above specified, and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a mortar, composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 1-2) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. Ordinance or (a) Contract Form. MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the. same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be'made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit: Fineness. The cement shall be so ground that 92 % will pass through a standard sieve, having 10,000 meshes and 75% will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when ,mixed with twenty-eight Per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. • 1 X.. •. ' • 1 -fe One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 daystin water) ............. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall sho_w'no retrogression in strength within the .period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound.. packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. Ordinance or Contract Form. (b) SEWER PIPE The tile pipe to be used in the improvement herein provided to be made shall be of the bell and spigot .type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said 'pipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof itwlpuding the sum of thirteen hundred seventy-three and sixty-four hundred dollars ($ 1373.64 )� i being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of thirteen hundred seventy-three and sixty-four hundredths dollars ($ 1, 37 3. 64 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into ten installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum -per annum according to law until paid. fSection 3. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at f the rate of six per centum per annum, pavable annually, and signed by the Mayor and by the Commissioner of I{ Public Work countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14tb, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted: by the City Council of the City of Evanston on the 6th day of Febry A. D. 1923. Approved Febry 7th,1923. JOHN F. HA", H. P. PEARS01M, City Clerk. Mayor. 1Z19198 283 RECONMENDATION, ESTIMATE AND ORDINANCE. RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Alderman of the City of Evanston in the City Council Assembled: Wig herewith,submit an.ordinance providing that the following rgadways_in the City of Evanston, County of Cook, State of Illinois,.to-wit: the roadway of LINCOLNWOOD DRIVE from a point twenty-one (21) feet south of the north lot line of PAYEE STREET, to a point one hundred fifty-eight (158) feet north of the north lot line of LINCLON STREET, the roadway of LINCOLN STREET, from the east lot line of LINCOLNWOOD DRIVE, to a point seventy-one (71) feet east of said lot line, the roadway of COLFAX STREET, from the east lot line of LINCOLNWOOD DRIVE to a point seventy-one (71) feet east of said lot line, also the roadways of intersecting streets and alley lying within said portion of said LINCOLNWOOD DRIVE and not included in the roadway thereof, be improved by grading, curbing, paving with a bituminous macadam pavement laid on a Portland cement concrete base or foundation, constructing necessary catch basins and catch basin connections to sewer, adjusting catch basins, manholes and valve chambers, together with an estimate of the cost of said improvement and recommend -the passage of said ordinance and the making of the improvement contemplated therein. Respectfully submitted, H. P. PEARSONS, WM. BLANCHARD, HAL V . SMITH, Board of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, Illinois, February 6th, 1923. ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that the following roadways in the City of Evanston, County of Cook, State of Illinois, to -wit: the road- way of 'LINCOLNWOOD DRIVE from a point twenty-one (21) feet south of the north lot line of PAYEE STREET, to a point one hundred fifty- eight (158) feet north of the`north lot line -of LINCOLN STREET, the roadway of LINCOLN STREET, from the east lot line of LINCOLNWOOD DRIVE, to a point seventy-one (71) feet east of said lot line, the roadway of COLFAX STREET, from the east lot line of LINCOLNWOOD DRIVE to a point seventy-one (71) feet east of said lot line, also the roadways of intersecting streets and alley lying within said portion of said LINCOLNWOOD DRIVE andnot included in the roadway thereof, be improved by grading, curbing, paving with a bituminous macadam pavement laid on a Portland cement concrete base or foundation, constructing necessary catch basins and catch basin conncections to sevrer, adjusting catch basins, manholes and valve chambers; and presented to the City Council of the City of Evanston a recommendation that such improvement be made, I hereby submit an estimate of the,cost of such improvement as described in said reso- lution, including labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment, as provided by law, viz: ESTIMATE OF COST,. 2700 Cu. yds. of grading @ $1.60 per cu. yd............ $ 4320.00 5750 Lin. ft. of Portland cement concrete curb laid t complete in place @ $1.25 per lin ft.............. 7,187.50 7600 Sq. yds. of Portland cement concrete base or foundation laid complete in place @ $1.80 per sq.yd. 13,680.00 7600 Sq. yds. of bituminous macadam paving ladi com- plete in place @$1.45 per sq. yd.................... 11,020.00 284 4 Brick catch basins including cast iron covers, plank.bottoms, excavation and.back filling, com- plete in place @ $80.00 each .... ................ $ 320.00 68 Lin. ft. of nine- inch internal diameter, vitri- fied, salt glazed, tile pipe catch basin connec- tions to sewer (average depth of cut five (5) feet) laid complete in place, including trenching and back filling ® $1.00 per lin. ft................. 68.00 11 Catch basins adjusted @ $12.00 each... ......... o. 132.00 10 Manholes adjusted to grade @ $12.00 each......... 120.00 4 Valve chambers adjusted to grade © $12.00 each... 48.00 For lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment therefor, not to exceed six (6) per cen- tum of the above, to -wit: $36,895.50................ 2.213.73 Total, $ 39,109.23 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improve- ment and the lawful expenses attending the same. WM. BLANCHARD, Engineer of the Board of Local Improvements of the City of Evanston. Dated, Evanston, Illinois, February 6th, 1923.. . AN ORDINANCE. Providing that the following roadways in the City of Evanston, County of Cook, State of Illinois, to -wit: the roadway of LINCOLNWOOD DRIVE from a point twenty-one (21) feet south of the north lot line of PAYNE STREET, to a point one hundred fifty-eight (158) feet north of the north lot line of LINCOLN STREET, the roadway of LINCOLN STREET, from the east lot line of LINCOLNWOOD DRIVE, to a point seventy-one (71) feet east of said lot line, the roadway of COLFAX STREET, from the east lot line of LINCOLNWOOD DRIVE to a point seventy-one (71) feet east of said lot line, also the roadways of intersecting streets and alley lying within said portion of said LINCOLNWOOD DRIVE and not included in the roadway thereof, be improved by grading, curbing, paving with a bituminous macadam pavement laid on a Portland cement concrete base or f6undation, constructing necessary catch basins and catch basin connections to sewer, adjusting catch basins, man- holes and valve chambers. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVWSTON: SECTION 1. That a local imppovement shall be made with- in the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local improve- ment -is as follows, to -wit: That the following roadways in the City of Evanston, County of Cook, State of Illinois, to -wit: the roadway of LINCOLNWOOD DRIVE from apoint twenty-one (21) ;feet south of the north -lot line of PAYNE STREET, to a point one hundred fifty-eight (158) feet north of the north lot line of LINCOLN STREET, the roadway of LINCOLN STREET, from the east lot line of LINCOLNWOOD DRIVE, to a point seventy-one (71) feet east of said lot line, the roadway of COLFAX STREET, from the east lot line of LINCOLNWOOD DRIVE to a point seventy-one (71) feet east of said lot line, also the road- ways of intersecting streets and alley lying within said portion of said LINCOLNWOOD DRIVE and not included in the roadway thereof, be and the same are hereby ordered improved as follows: LOCATION OF ROADWAYS The center line of the roadways herein provided to be paved shall coincide with the center line of the respective streets and alleys within which said roadways are included. WIDTH OF ROADWAYS The width of the roadways herein provided to be paved 1 �9i98 285 shall be as follows, measured in feet from back to back of the curb hereinafter specified and at right angles to the center line of the respective street or alley,'as the case may be, to -writ: LINCOLIMOOD DRIVE: At a point twenty-one (21) feet south of the 24 feet. south lot line of Payne Street, At a point one hundred fifty-eight (158) feet north of the north lot line of Lincoln Street. 24 feet. LINCOLN STREET: ' At the east curb line of Lincolnwood Drive 24 feet. At a point seventy-one (71) feet east of the east lot line of Lincolnwood Drive. 24 " COLFAX STREET: At the west lot line of Lincolnwood Drive. 24 feet At a point seventy-one (71) feet east of the east lot line of Lincolnwood Drive. 24 " GRANT STREET: At the west lot line of Lincolnwood Drive. 24 " At the east lot line of Lincolnwood -Drive. 24 " Alley one hundred ninety (190) feet south of Lincoln - Street: At the east curb line of Lincolnwood Drive. 16 " At the east lot line of Lincolnwood Drive. 16 " The width of roadway at intermediate points shall be respectively proportional to the foregoing. GRADE OF ROADWAY AND CURB The grade of the roadways herein provided to be paved, when finished, and the grade of the top of the curb hereinafter specified, when completed and set in place, are hereby established as follows, measured in feet and decimal parts of a foot above the datum plane of the City of Evanston, to -wit: Crown Line. Gutter Line. Top of Curb. LINCOLNWOOD DRIVE: At a point one hundred fifty-eight (158) feet north of the north Lot line of Lincoln Street. 28.00 27.50 28.00 At the center line of Lincoln St. 27.00 26.05 27.00 At a point one hundred ninety-eight (198) feet south of the south lot line of Lincolrr-Street. 27.90 27.40 27.90 At the center line of Colfax St., 26.90 26.40 26.90 At a point two hundred forty (240) feet south.of. the south lot line of Colfax Street. 27.80 27:30 27.80 At the center line of Grant St. 26.50 26.00 26.50 At the south lot line of Grant St. 26.50 26i25 26.50 At a point one hundred eighty (180) feet south of the south lot line of Grant Street. 26.30 25.55 26.30 At a nt three hundred seventy- five feet south of the south M5) lot line of Grant Street. 27.00 26.55 26,80 At -a point five hundred seventy ( 570 ) feet south of the south lot line of Grant Street. 26.00 25.25 26.00 At a. point forty-five (45) feet north of the north lot line of Payne Street. 26.50 26.0p 26.30 At a point twenty-one (21) feet south of the north lot line of Payne St. 26.30 25.75 26.30 Lincoln Street: At a point seventy-one (71) feet east of the east lot line of Lincolnwood Drive. 27.40 26.95 27.20 Colfax Street At the west lot line of Lincoln- wood Drive. 27.20 26.75 27.00 At a point seventy-one (71) feet east of the east lot line of Lincolnwood Drive. 27.50 27.05 27.30 Grant Street: At the west lot line of Lincolnwood Drive. 26.90 26.45 26.70 At the east lot line of Lincolnwood Drive. 26.90 26.45 26.70 Alley at one hundred ninety (190) feet south of the south lot line of Lincoln Street: At the east lot line of Lincolnwood Drive. 28.60 28.15 28.40 For straight curb Street paving ordinance. The grade of the crown line, gutter line and top of curb at intermediate points shall be respectively proportional to the foregoing. The datum plane hereinafter mentioned is the* plane of low water mark of Lake Michigan in the year A. D., 1847, as established by the Trustees of the Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the north-west corner of Davis Street and Sherman Avenue, in said City of Evanston. The crown line hereinbefore mentioned shall be identical with the center line of the respective road- ways when completed. The gutter line hereinbefore mentioned shall be identical with the line where the surface of the road- ways when completed touches the face of the curbing on both sides of the respective roadways. The surface of the roadways herein provided to be paved when completed shall conform to the arc of a circle passing through the respective crown and gutter lines, and shall be true and symmetrical. GRADING Prior to laying down the pavement thereon, the roadways specified to be paved shall be cleaned in a thorough and workmanlike manner of all debris and rubbish, such as deteriorated pavements, crossings, box drains, culvertsslumps, etc. The sub -grade shall be prepared by excavating the soil, or filling thereupon with other and suitable soil to such depths and shapes as will insure the finished pavement being at the grade established therefor. Spongy earth that is unfit to be left in the sub -grade shall be removed by the con- tractor without extra charge. The sub -grade shall be rolled with a suitable self-propelling roller or flooded with water, or both as may be found necessary and practicable to thoroughly compact same. Any depressions that may appear as the rolling or flooding of the sub -grade progresses shall be filled upon at the surface with suitable soil and thoroughly com- pacted as before specified. 287, Ordinance or Contract Form. Paving. (a) CONCRETE CURB A concrete curb shall be constructed on both sides of the respective roadways herein provideto be d paved. Said curb shall consist of a mixture, by volume, of one part of Portland cement, two parts of sand and four. parts of crushed gravel or stone. Except that the top and exposed roadway face of the curb shall ' be surfaced to a depth of one-half inch with a mortar composed of two parts of Portland cement and three ; parts of clean, sharp sand of the sizes and quality hereinafter specified for the sand to be used in making this curb. The crushed gravel or stone specified for the body of the curb shall be clean, hard, free from dust, loam, vegetable or other deleterious matter, and shall show sharp edged cubical fracturing. This crushed gravel or stone shall be of variable sizes, grading from a maximum dimension of one inch down to a minimum of one-fourth inch, and so proportioned that the particles capable of passing through a screen of three -fourths inch mesh will fill the voids in the particles retained on such size screen, but without more than ten per cent excess of the smaller particles. The sand specified for the curb shall be free from clay, loam, vegetable or other deleterious matter. The grain shall be angular, and shall range in size from one -quarter inch down to the finest, but not more than 3 per cent shall pass through a seive having (100) one hundred meshes per lineal inch. The sand shall be of such quality that mortar composed of one part of the cement hereinbefore specified and three parts of the sand, by weight, when made into briquetts, will develop a tensile strength at least equal to the strength of a mortar of the same consistency and proportions made with the same cement and Standard Ottawa sand. The Portland cement specified for the curb shall be of such quality that representative samples collected form the shipments made for the job shall be capable of passing the tests for fineness, soundness, initial setting, and tensile strength hereinafter set forth for Portland cement. The sand and crushed gravel or stone shall be clean when delivered on the job and shall be kept clean until used. In no case shall the sand and crushed gravel or stone when used, contain frost or lumps of froz- en matter. Forms shall be used in constructing the curb. The forms shall be sound, free from warp, and of suffici- ent strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established lines and grades. Wooden forms shall be thoroughly wetted and metal forms shall be oiled be- fore concrete is deposited against them. All mortar and dirt shall be removed from forms that have pre- viously been used. The ingredients specified for the body of the curb shall be mixed in a batch machine mixer of a type that will insure a uniform mixture and product. Clean water, free from oil, acid, alkali, or vegetable matter shall be admitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the crushed gravel or stone from the mortar. Provided, that on such portions of the work as it may be imprac- ticable to use the machine mixer, thorough and efficient hand mixing will be allowed. The equipment used, if any, for hand mixing shall be as specified for mixing the surfacing mortar. The ingredients specified for the mortar to be used in surfacing the top and exposed roadway face of the curb shall be mixed on a movable, tight iron platform, of ample size to accommodate the manipulations specified, without getting the ingredients off the platform or mixed with dirt. The Portland cement and sand specified for surfacing portions of the curb shall be thoroughly mixed on the platform with hoes or shovels, and until the color becomes uniform, after which sufficient water, of the quality hereinbefore required, shall be gently added, while the mixing continues, to produce a stiff and homogeneous mortar. The concrete and the finishing mortar after being prepared as specified shall be promptly deposited and compacted in the forms, in layers not exceeding six inches in depth. The back of the curb shall be worked with a spade to secure a well filled surface. The front upper edge of the curb shall be rounded to a radius of one and one-half inches in such manner that the planes of the top and roadway face of the curb will be tan- gent to the curve described by said radius. As soon as the cement has sufficiently set, the forms shall be re- moved from the face of the curb; and the face mortar shall be promptly troweled down hard and smooth, drawing the cement from the crushed gravel or stone as little as possible. The gloss shall be removed with a vet brush. CONCRETE CURB —Continued Ordinance or Contract (b) Form. Paving. The curb shall be constructed in sections not less than four feet nor more than six feet in length. In con- structing the curb, all templates used to form the sections shall be kept perpendicular to the top of the curb. All joints shall be neatly tool finished. The joint marking shall correspond to the joint made by the tem- plates. The curb shall be twenty-four inches in depth, and the thickness shall -vary uniformly from six inches at the top to eight inches at the bottom of the curb. The curb shall be built in suc11 manner that the road- way face will be vertical; that the t op will be at the grade hereinbefore established; and that the back of the curb, at the top thereof shall be on the lines hereinbefore established. The curb at intersecting streets and alleys shall be constructed to true curves tangent to thVters, cting curb lines proper. The radius of the curve to which the back of the curb shall conform shall bet for intersecting street and six feet for intersecting alley curb lines. Except as above specified, for intersecting street and alley curb lines, the curb shall be constructed paralleled to the center line of the respective road- ways herein provided to be paved. The curb shall be constructed at such distances from the center line of the roadways, herein provided to be paved, as will give the respective width of roadways hereinbefore speci- fied and established, when measured from back to back of curb in the manner and on the lines herembefore set forth. Trenches shall be excavated to sufficient width and depth to receive the curb and necessary moulding frames. Wherever other than sandy soil is encountered the curb trenches shall be excavated to a depth of six inches below the bottom of the curb and shall be re -filled to such depth with sand or cinders. The sand or cinders shall be compacted with water or by hand tampers. The frames shall be securely fastened in place !!! and shall be accurately brought to line and grade before they are filled with concrete. The grade and line to which the frames are to be set shall be such as is necessary to insure the finished curb being true to the lines and grades hereinbefore established therefor. For Bituminous Macadam Paving. Ordinance or Contract Form. PORTLAND CEMENT CONCRETE FOUNDATION Upon the sub -grade prepared as hereinbefore specified, shall be constructed a Portland cement concrete base or foundation, five (5) inches thick. The concrete shall be composed by volume, of one (1) part of Portland cement; three (3) parts of clean, hard grained, and sharp sand; and five (5) parts of clean, hard limestone or gravel broken or graded so as to yield a range of sizes (in longest dimension) from two (2) inches down to one-half (1-2) inch, and so proportioned as to produce a maximum number and minimum volume of interstices in the aggregate. The concrete shall be prepared by mixing the cement, sand and stone or gravel in an approved batch mixer with sufficient clean water and mixing sufficiently to produce a plasticity best suited to the condi- tions of weather and soil. The concrete mixed as above specified, shall be promptly spread on the surface of the sub -grade to the required thickness, and to such shape and grade as will insure the upper surface of the foundation after be- ing thoroughly compacted by rolling or tamping, being parallel with and three (3) inches below the grade hereinbefore specified for the finished roadway. The upper surface of the foundation shall not be troweled smooth but shall be left moderately rough to grip the bituminous macadam pavement specified to be laid thereon. 1�t9i98 289 t Ordinance or (a) Contract Form. BITUMINOUS MACADATAI PAVEMENT Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard, broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of three (3) inches thereof being spread on and used in each and every square yard of the roadway. « As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be evenly applied to the limestone ( at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one and three quarters (1 3-4) gallons thereof being evenly spread on and used in each and every square yard of the roadway, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size rang-. ing from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diam- eter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screen- ings the roadway so covered, shall be given a thorough rolling with a roller of the weight and type herein - before named. This rolling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the roadway shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be evenly applied to the surface of the pavement a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread as to insure not less than three quarters (3-4) gallon thereof being evenly spread and used on each and every square yard of road- way. Immediately after the second application of asphaltic cement is made and spread and progressing therewith there shall be evenly spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one - eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of the roadway. A final rolling of the roadway shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the roadway is thoroughly compacted, and brought to a surface, free from de- pressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement herein provided to be built, shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The gutters shall be kept trimmed to the required thickness and grade as the work progresses. The cubic yardage of stone, herein required, shall be verified by measurement of volume thereof in cars, or other conveyances, transporting same to said City, and prior to initial unloading, and shall be fur- ther verified by measured length of dumps and height of grade marks on the work. The stone shall be hauled on to the work in boxes of uniform size and contents and of such shape as to enable an easy and exact determination of the volume contained therein to be made on the site. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following require- ments and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural as- phalt and a flux to be tested with and proven the beat suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical 290 Ordinance or (b) Contract Form. BITUMINOUS MACADAM PAVEMENT properties and be so prepared for use as to best adapted to the climatic and traffic conditions of the.roadway on which it is to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and,must not be harder than one millimeter penetration at 32 degrees Fahrenheit un- der 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar sing it shall be pres- or any of its products, or other injurious matters, and the various hydrocarbons compo ent in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95%. (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98 /% shall be soluble in cold carbon tetrachloride. naptha, at the air (9). The bitumen of the cement shall be soluble in 75 degrees Baume petroleum temperature to the extent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. CATCHBASINS For the purpose of receiving storm waters from the surface of the roadway or roadways, as the case may be, herein provided to be paved four catchbasins shall be constructed at the necessary points along the sides of the afore- said roadway or roadways. Said catchbasins shall be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catchbasins, when in place, to the upper surface of the proposed curbing. Said catchbasins shall be cylindrical in shape having an internal diameter of forty-two (42) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty- four (24) inches at the top of the masonry by means of eight (8) header courses of brick laid endwise and horizori- tally, to -fit the iron covers hereinafter specified to be furnished and set on the walls of said catchbasins. Said catchbasins shall have walls eight (8) inches thick, built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catchbasins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1%) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch - basins shall each rest on a solid bottom of two (2) inch pine planks laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure sixty (60) inches in diameter and shall have its tipper side placed five and one-half (5/) feet below the upper surface of the brick wall for said catchbasins. Said catch - basins shall be connected with the sewer or sewers, as the case may be, now existing or herein provided to be con- structed, as the case may be, in and along the center line of the said roadway or roadways at the side of which the respective catchbasins are to be constructed. Said catchbasins shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed, tile pipe having an internal diameter of nine (9) inches and of the type known as "Bell and Spigot" the metal of which pipe shall be thirteen -sixteenths (13/16) of an inch in thickness and shall be not less than two (2) feet in length. Said pipe shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipes shall be securely sealed with a mortar of the quality herein required for brick walls in catch -basins. Izt9l9s 4 29t Each catchbasin connection shall start in a nine (9) inch vitrified, salt glazed, tile pipe "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the sewer at a point not less than six (6) feet in advance of the catchbasin, measured along and in the downstream direction of the sewer from a point on said sewer directly opposite the catchbasin. The pipes shall be laid true to line and grade and the connection shall enter the catchbasin at a point two and one-half (2/ ) feet above the plank bottom. The pipe entering the catchbasin through the brick walls thereof shall be an elbow with the bell end turned downward inside the catchbasin to form a trap. The pipe shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior, diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints.. The materials excavated shall be kept compactly along the sides of the trenches and shall be backfilled as soon as prac- ticable in order to occasion the least possible inconvenience to the public in use of the street. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catchbasins shall each be equipped and fitted with a castiron cover weighing not less than three hundred thirty (330) pounds and having a vertical height of thirteen (13) inches, which cover shall be of the same size and { pattern or equal in size, quality and workmanship to the castiron covers now in use on existing catchbasins in Dempster Street between Ridge Avenue and Dodge Avenue in said City of Evanston.. Said catchbasin covers herein provided to be furnished and set shall rest on the walls of the catchbasins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catchbasins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the elevations hereinbefore specified for the top of the curb at the points where said catchbasins are to be located. Paving Ordinance and Contract. MANHOLES TO BE ADJUSTED AND BROUGHT TO GRADE The 10 brick manholes now located within the space herein provided to be paved, and which are already . equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said manholes as may be necessary to bring the covers of the manholes to the height above specified and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick, laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one- . half (I/) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. VALVE CHAMBERS TO BE ADJUSTED AND BROUGHT TO GRADE The 4 brick valve chambers now located within the space herein provided to be paved, and which are already equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said valve chambers as may be necessary to bring the covers to the height above specified, and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a mortar, composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 1-2) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. CATCH BASINS TO BE ADJUSTED AND BROUGHT TO GRADE The 11 brick catch basins now located along the sides of the roadway or roadways, as the case may be, herein provided to be paved, shall have their covers raised or lowered as the case may be in such manner as to bring the tops thereof to the surface of the adjacent ground. Such adjustments as may be necessary shall be made to the walls of said catch -basins with hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (I/) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. Said covers shall be imbedded in mortar of the quality hereinbefore specified in adjusting said walls. Said catch -basins shall be connected to the curbs by means of sewer pipes of the kind, size and quality and laid in the manner hereinbefore specified for pipe used in constructing surface drainage sewers. Opening shall be made in curbs at points of said connections in such manner as to permit free and un- interrupted passage of storm waters, from the surface of the pavement hereinbefore specified, to said basins. 292 Ordinance or (a) Contract Form. MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAN D CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit: Fineness. The cement shall be so ground that 927o will pass through a standard sieve, having 10,000 meshes and 757o will pass through a sieve having•40,000 meshes per square inch. ' Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. I-Z19198 293 MISCELLANEOUS SPECIFICATIONS —Continued Ordinance or Contract Form. (b) SEWER PIPE The tile pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said 1pipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: inch. For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths. (13116) of an For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof ' c din a sum of Yit' z�i"d� rs Two Thousand two hundred thirteen ar�d seventy-three dollars ( 2,213.73), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of two thousand two hundred thir- teen and seventy-three hundredths dollars ($ 2,213.73 }, shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into 10 installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section '). And for the purpose of anticipating the collection of the second and subsequent installments of 'said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the naive of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Counoil of the City of Evanston on the 6th day of Febry A. D. 1923. Approved Febry 7th 1923. JOHN F. RAIN, H. P. PEARSONS, City Clerk. Mayor. 2.94 RECOMMENDATION, ESTIMATE AND ORDINANCE. RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: We herewith submit an ordinance providing that the roadway of CLEVELAND STREET from the west lot line of RIDGE AVENUE to the east lot line of ASBURY AVENUE, also the road- way of intersecting street lying within said portion of said CLEVELAND STREET and not included in the roadway thereof, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, curbing with.a Portland Cement Concrte Curb, paving with a bituminous macadam pavement laid ona Portland Cement Con- crete base or foundation, constructing catch basins and catch basin conncections to sewer, adjusting manholes, catch basins, valve chambers and present macadam paving adjoining and connect- ing with the proposed improvements; together with an estimate of the cost of said improvement and recommend the passage of said ordinance and the making of the improvement contemplated therein. Respectfully submitted, H. P PEARSONS il• r AIM. BLANCHARD HAL W . SMITH Board of Local Improvements of the City,of Evanston, Illinois. Dated, Evanston, Illinois. February 6th, 1923. ESTIMATED OF ENGINEER OF BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that the roadway 'of CLEVELAND STREET from the west lot line of RIDGE AVENUE to the east lot line of ASBURY AVENUE, also the roadway of intersecting street lying with- in said portion of said CLEVELAND STREET and not included in the roadway thereof, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, curbing with a Portland Cement Concrete Curb, paving with a bituminous macadam pavement laid on a Portland Cement Concrete base or foundation, constructing catch basins and catch basin connections to sewer, adjusting manholes, catch basins, valve chambers and present macadam paving adjoining and connecting with the proposed improvement; and presented to the City Council of the City of Evanston, a recommendation that such improvement be made, I herewith submit an estimate of the cost of such improvement, as described in said resolution, including labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assess- ment, as provided by law, viz: ESTIMATE OF COST 1200 Cu. yds. of grading ® $1.60 per cu. yd..............$.1,920.00 2400 Lin. ft. of Portland Cement Concrete Curb laid complete in place © $1.25 per lin. ft ............... 3,000.00 3200 Sq. yds. of Concrete base or foundation laid com- plete in place @ $1.80 per sq. yd................... 5,760.00 3200 Sq. yds of bituminous macadam paving laid com- plete in place @ $1.40 per sq. yd................... 4,480.00 6 Brick basins including cast iron covers, plank bottoms, excavation and back filling, complete in place ® $75.00 each ..................... 450,00 75 Lin. ft. of 9" internal diamtere, vitrified, salt glazed, the pipe catch basin connections to sewer, (average depth of out five (5) feet in- cluding trenching and backfilling laid com- plete in place 1.00 per lin. ft ................... 75.00 110108 295 2 Valve Chambers adjusted to grade @ $12.00 each........$ 4 Manholes adjusted to grade @ $12.00 each .............. 6 Catch basins adjusted to grade @ $12.00 each.......... 75 Sq. yds. of macadam paving adjusted @$1.20 per sq. yd. For lawful expenses attending the proceedings for making. said improvement and the cost of making and collecting the assessment therefor, not to exceed six (6) per centum of the above,'to-wit: $15,919.00........................ Total................... 24.00 48.00 72.00 90.00' 955.14 $16,874.14 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improvement and the lawful expenses attending the same. Wm. Blanchard. Engineer of the Board of Local Im- provements of the City of Evanston. Dated, Evanston, Illinois. February 6th, 1923. AN ORDINANCE. Providing that the roadway of CLEVELAND STREET from the west lot line of RIDGE AVENUE to the east lot line of ASBURY AVENUE, also the roadway of intersecting street lying within said portion of said CLEVELAND STREET and not included in the oradway thereof in the City of Evanston, County of Cook, State of Illinois, be im- proved by grading, curbing with a Portland Cement Concrete Curb, paving with a bituminous macadam pavement laid in a Portland Cement Concrete base or foundation, constructing catch basins and catch basin connections to sewer, adjusting manholes, catch basins, valve chambers and present macadam paving adjoining and connecting with the proposed improvement. B% IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvement shall be made within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local improvement is as follows, to -wit: That the roadway of CLEVELAND STREET from the west lot line of RIDGE AVENUE to the east lot line of ASBURY AVENUE, also the road- way of intersecting street lying within said portion of said CLEVE- LAND STREET and not included in the roadway thereof, in the City of Evanston, County of Cook; State of Illinois, be and the same are here- by ordered improved as follows: LOCATION OF ROADWAYS The center of the roadways herein provided to be paved shall coincide with the center line of the respective streets and alleys with- in which said roadways are included. WIDTH OF ROADWAYS The width of the roadways herein provided to be paved shall be as follows, measured in feet from back to back of the curb herein- after specified and at right angles to the center line of the respective street or alley, as the case may be, to -wit: CLEVELAND STREET: At the west lot line of Ridge Avenue. 24 feet. At the east lot line of Asbury Avenue. 24 feet. BARTON AVENUE: At the south curb line of Cleveland St. 24 feet. At the south line of Cleveland Street. 24 feet. The width of roadway at intermediate points shall be respectively proportional to the foregoing. 296 GRADE OF ROADWAY AND CURB The grade of the roadways herein provided to be paved, when finished, and the grade of the top of the curb hereafter speci- fied, when completed and set in place,'ar_'hereby established as follows, measured in feet and decimal parts of a foot above the datum plane of the City of Evanston, to -wit: Transverse Section of Roadway. Crown Line Gutter Line. Top of Curb. CLEVELAND STREET: At the west lot line of Ridge.Avenue. 37.40 36.90 37�40 At four -hundred fifty(450) feet east of Barton Avenue. 35.10 34.60 35.10 At three hundred fifty(350) feet east of Barton Avenue, 34.10 33.60 34.10 At two hundred fifty (250) feet east of Barton Avenue, 33.50 33.00 33.50 At one hundred twenty-five (125) feet east of Barton Ave. 33.10 32.60 33.10 At twenty-three (23) feet west of the east line of Barton Avenue. 32.65 32.15 32..65 At twenty-three (23) feet east of the west line of Barton Avenue. 32.65 32.15 32.65 At seventy-five (75) feet east of the east line of Asbury Avenue. 32.00 31.25 32.00 At the east lot line of Asbury Avenue. 32.00 31.75 32.00 BARTON AVENUE: At the south line of Cleveland Street. 32.90 32.55 32.80 The grade of the crown line, gutter line and top of curb at intermediate points shall be respectively proportional to the fore- going. The datum plane hereinafter mentioned is the plane of low water mark of Lake Michigan in the year A. D., 1847 as established by the Trustees of the Illinois and Michigan Canal and,is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as the City Hall, located on the north-west corner of Davis Street and Sherman Avenue, in said City of Evanston. The crown line hereinbefore mentioned shall be identical with the center line of the respective road -ways when completed. The gutter line hereinbefore mentioned shall be identical with the line where the surface of the roadways when completed touches the face of the curbing on both sides of the respective roadways. The surface of the roadways herein provided to be paved when completed shall conform tb. the -;arc of a circle passing through the respective crown and gutter lines, and shall be true and symmetrical. GRADING Prior to laying down the pavement thereon, the roadways spec- ified to be paved shall be cleaned in a thorough and workmanlike manner of all debris and rubbish, such as deteriorated pavements, crossings, box drains, culverts, trees, stumps, etc. The sub -grade shall be prepared by excavating the soil, or filling thereupon with other suitable and'suitable soil to such depths and shapes as will insure the finished pavement being at the grade established therefor. Spongy earth that is unfit to be left in the sub -grade shall be removed by the contractor without extra charge. The sub -grade shall be rolled with a suitable self propelling roller or flooded with water, or both as may be found necessary and 11-19198 297 practicable to throughly compact same. Any depressions that may appear as the rolling or flooding of the sub -grade progresses shall be filled upon at the surface with suitable soil and thrpughly com- pacted as before specified. Ordinance or Contract (a) Form. Paving. CONCRETE CURB A concrete curb shall be constructed on both sides of the respective roadways herein provided to be paved. Said curb shall consist of a mixture, by volume, of one part of Portland cement, two parts of sand and four parts of crushed gravel Qr stone. Except that the top and exposed roadway face of the curb shall be surfaced to a depth of one-half inch with a mortar composed of two parts of Portland cement and three parts of clean, sharp sand of the sizes and quality hereinafter specified for the sand to be used in making this curb. The crushed gravel or stone specified for the body of the curb shall be clean, hard, free from dust, loam, vegetable or other deleterious matter, and shall show sharp edged cubical fracturing. This crushed gravel or stone shall be of variable sizes, grading from a maximum dimension of one inch down to a minimum of one-fourth inch, and so proportioned that the particles capable of passing through a screen of three -fourths inch mesh will fill the voids in the particles retained on such size screen, but without more than ten per cent excess of the smaller particles. The sand specified for the curb shall be free from clay, loam, vegetable or other deleterious matter. The grain shall be angular, and shall range in size from one -quarter inch down to the finest, but not more than 3 per cent shall pass through a seive having (100) one hundred meshes per lineal inch. The sand shall be of such quality that mortar composed of one part of the cement hereinbefore specified and three parts of the sand, by weight, when made into briquetts, will develop a tensile strength at least equal to the strength of a mortar of the same consistency and proportions made with the same cement and Standard Ottawa sand. The Portland cement specified for the curb shall be of such quality that representative samples collected form the shipments made for the job shall be capable of passing the tests for fineness, soundness, initial setting, and tensile strength hereinafter set forth for Portland cement. The sand and crushed gravel or stone shall be clean when delivered on the job and shall be kept clean until used. In no case shall the sand and crushed gravel or stone when used, contain frost or lumps of froz- en matter. Forms shall be used in constructing the curb. The forms shall be sound, free from warp, and of suffici- ent strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established lines and grades. Wooden forms shall be thoroughly wetted and metal forms shall be oiled be- fore concrete is deposited against them. All mortar and dirt shall be removed from forms that have pre- viously been used. The ingredients specified for the body of the curb shall be mixed in a batch machine mixer of a type that will insure a uniform mixture and product. Clean water, free from oil, acid, alkali, or vegetable matter shall be admitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the crushed gravel or stone from the mortar. Provided, that on such portions of the work as it may be imprac- ticable to use the machine mixer, thorough and efficient hand mixing will be allowed. The equipment used, if any, for hand mixing shall be as specified for mixing the surfacing mortar. The ingredients specified for the mortar to be used in surfacing the top and exposed roadway face of the curb shall be mixed on a movable, tight iron platform, of ample size to accommodate the manipulations specified, without getting the ingredients off the platform or mixed with dirt. The Portland cement and sand specified for surfacing portions of the curb shall be thoroughly mixed on the platform with hoes or shovels, and until the color becomes uniform, after which sufficient water, of the quality hereinbefore required, shall be gently added, while the mixing continues, to produce a stiff and homogeneous mortar. The concrete and the finishing mortar after being prepared as specified shall be promptly deposited and compacted in the forms, in layers not exceeding six inches in depth. The back of the. curb shall be worked with a spade to secure a well filled surface. The front upper edge of the curb shall be rounded to a radius of one and one-half inches in such manner that the planes of the top and roadway face of the curb will be tan- gent to the curve described by said radius. As soon as the cement has sufficiently set, the forms shall be re- moved from the face of the curb; and the face mortar shall be promptly troweled down hard and smooth, drawing the cement from the crushed gravel or stone as little as possible. The gloss shall be removed with a .vet brush. 298 CONCRETE CURB —Continued Ordinance or Contract Form. Paving. (b) The curb shall be constructed in sections not less than four feet nor more than six feet in length. In con- structing the curb, all templates used to form the sections shall be kept perpendicular to the top of the curb. All joints shall be neatly tool finished. The joint marking shall correspond to the joint made by the tem- plates. The curb shall be twenty-four inches in depth, and the thickness shall vary uniformly from six inches at the top to eight inches at the bottom of the curb. The curb shall be built in such manner that the road- way face will be vertical; that the t op will be at the grade hereinbefore established; and that the back of the curb, at the top thereof shall be on the lines hereinbefore established. The curb at intersecting streets and alleys shall be constructed to true curves tangent to the intersecting curb lines proper. The radius of the curve to which the back of the curb shall conform shall be ten feet for intersecting street and six feet for intersecting alley curb lines. Except as above specified, for intersecting street and alley curb lines, the curb shall be constructed paralleled to the center line of the respective road- ways herein provided to be paved. The curb shall be constructed at such distances from the center line of the roadways, herein provided to be paved, as will give the respective width of roadways hereinbefore speci- fied and established, when measured from back to back of curb in the manner and on the lines herembefore set forth. Trenches shall be excavated to sufficient width and depth to receive the curb and necessary moulding frames. Wherever other than sandy soil is encountered the curb trenches shall be excavated to a depth of six inches below the bottom of the curb and shall be re -filled to such depth with sand or cinders. The sand or cinders shall be compacted with water or by hand tampers. The frames shall be securely fastened in place and shall be accurately brought to line and grade before they are filled with concrete. The grade and line to which the frames are to be set shall be such as is necessary to insure the finished curb being true to the lines and grades hereinbefore established therefor. For Bituminous Macadam Paving. Ordinance or Contract Form. PORTLAND CEMENT CONCRETE FOUNDATION Upon the sub -grade prepared as hereinbefore specified, shall be constructed a Portland cement concrete base or foundation, five (5) inches thick. The concrete shall be composed by volume, of one (1) part of Portland cement; three (3) parts of clean, hard grained, and sharp sand; and five (5) parts of clean, hard limestone or gravel broken or graded so as to yield a range of sizes (in longest dimension) from two (2) inches down to one-half (1-2) inch, and so proportioned as to produce a maximum number and minimum volume of interstices in the aggregate. The concrete shall be prepared by mixing the cement, sand and stone or gravel in an approved batch mixer with sufficient clean water and mixing sufficiently to produce a plasticity best suited to the condi- tions of weather and soil. The concrete mixed as above specified, shall be promptly spread on the surface of the sub -grade to the required thickness, and to such shape and grade as will insure the upper surface of the foundation after be- ing thoroughly compacted by rolling or tamping, being parallel with and three (3) inches below the grade hereinbefore specified for the finished roadway. The upper surface of the foundation shall not be troweled smooth but shall be left moderately rough to grip the bituminous macadam pavement specified to be laid thereon. IZ 19198 Ordinance or Contract Form. (a) BITUMI\OUS MACADAM PAVEMENT Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard, broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of three (3) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be evenly applied to the limestone ( at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one and three quarters (1 3-4) gallons thereof being evenly spread on and used in each and every square yard of the roadway, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size rang- ing from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diam- eter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screen- ings the roadway so covered, shall be given a thorough rolling with a roller of the weight and type herein - before named. This rolling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the roadway shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be evenly applied to the surface of the pavement a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread as to insure not less than three quarters (3-4) gallon thereof being evenly spread and used on each and every square yard of road- way. Immediately after the second application of asphaltic cement is made and spread and progressing therewith there shall be evenly spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one - eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of the roadway. A final rolling of the roadway shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the roadway is thoroughly compacted, and brought to a surface, free from de- pressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement herein provided to be built, shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The gutters shall be kept trimmed to the required thickness and grade as the work progresses. The cubic yardage of stone, herein required, shall be verified by measurement of volume thereof in cars, or other conveyances, transporting same to said City, and prior to initial unloading, and shall be fur- ther verified by measured length of dumps and height of grade marks on the work. The stone shall be hauled on to the work in boxes of uniform size and contents and of such shape as to enable an easy and exact determination of the volume contained therein to be made on the site. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following require- ments and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural as- phalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical 3(")® ordinance or Contract Form. BITUMINOUS MACADAM PAVEMENT properties and be so prepared for use as to best adapted to the climatic and traffic conditions of the roadway on which it is to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters. at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit un- der 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various Hydrocarbons composing it shall be pres- ent in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95%. (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98 Y,% shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in 75 degrees Baume petroleum naptha, at the air ! temperature to the extent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. CATCHBASINS For the purpose of receiving storm waters from the surface of the roadway or roadways, as the case may be, herein provided to be paved SiX: catchbasins shall be constructed at the necessary points along the sides of the afore- said roadway or roadways. Said catchbasins shall be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catchbasins, when in place, to the upper surface of the proposed curbing, Said catchbasins shall be cylindrical in shape having an internal diameter of forty-two (42) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty- four (24) inches at the top of the masonry by means of eight (8) header courses of brick laid endwise and horizon- tally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catchbasins. Said catchbasins shall have walls eight (8) inches thick, built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catchbasins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1%) parts of clean, sharp sand mixed with sufficient clean water ._to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch - basins shall each rest on a solid bottom of two (2) inch pine planks laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure sixty (60) inches in diameter and shall have its upper side placed five and one-half (S/) feet below the upper surface of the brick wall for said catchbasins. Said catch - basins shall be connected with the sewer or sewers, as the case may be, now existing or herein provided to be con- structed, as the case may be, in and along the center line of the said roadway or roadways at the side of which the ;respective catchbasins are to be constructed. Said catchbasins shall be connected with the sewer or sewers aforesaid Eby means of vitrified, salt glazed, tile pipe having an internal diameter of nine (9) inches and of the type known as "Bell and Spigot" the metal of which pipe shall be thirteen -sixteenths (13/16) of an inch in thickness and shall be not ,,:Jess than two (2) feet in length. Said pipe shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks Ik. and blisters, and in all respects of the best quality and workmanship. All joints between the pipes shall be securely sealed «-ith a mortar of the quality herein required for brick walls in catch -basins. 301 Each catchbasin-connection shall start in a nine (9) inch vitrified, salt glazed, tile pipe "Y" branch of the qua and -laid in the manner required for"sewers, which "Y" branch shall be set in the sewer at a point not less than six feet in advance of the catchbasin, measured along and in the downstream direction of the sewer from a point on sewer directly opposite the catchbasin. The pipes shall be laid true to line and grade and the connection shall enter catchbasin at a point two and one-half (2/) feet above the plank bottom. The pipe entering the catchbasin through brick walls thereof shall be an elbow with the bell end turned downward inside the catchbasin to form a trap. The pipe shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exte diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joi The materials excavated shall be kept compactly along the sides of the trenches and shall be backfilled as soon as pi ticable in order to occasion the least possible inconvenience to the public in use of the street. The trenches shall promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully pac under and around the pipes. Said catchbasins shall each be equipped and fitted with a castiron cover weighing not less than three hundred I thirty (330) pounds and having a vertical height of thirteen (13) inches, which cover shall be of the same size and pattern or equal in size, quality and workmanship to the castiron covers now in use on existing catchbasins in Dempster Street between Ridge Avenue and Dodge Avenue in said City of Evanston. Said catchbasin covers herein provided to be furnished and set shall rest on the walls of the catchbasins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catchbasins. The walls shall be built to such height as will bring the.tops of the covers when set in place, to the elevations hereinbefore specified for the top of the curb at the points where said catchbasins are to be located. Paving Ordinance and Contract. MANHOLES TO BE ADJUSTED AND BROUGHT TO GRADE The 4 brick manholes now located within the space herein provided to be paved, and which are already equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said manholes as may be necessary to bring the covers of the manholes to the height above specified and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one- half (1/) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls.' VALVE CHAMBERS TO BE ADJUSTED AND BROUGHT TO GRADE j i The 2 brick valve chambers now located within the space herein provided to be paved, and which are already equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said valve chambers as may be necessary to bring the covers to the height above specified, and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a mortar, composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 1-2) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. s CATCH BASINS TO BE ADJUSTED AND BROUGHT TO GRADE The 6 brick catch basins now located along the sides of the roadway or roadways, as the case may be, herein provided to be paved, shall have their covers raised or lowered as the case may be in such manner as to bring the tops thereof to the surface of the adjacent ground. Such adjustments as may be necessary shall be made to the walls of said catch -basins with hard burned sewer brick laid in a mortar composed by volume of one ,(1) part of Portland cement of the best quality and one and one-half (1/) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. Said covers shall be imbedded in mortar of the quality hereinbefore specified in adjusting said walls. Said catch -basins shall be connected to the curbs by means of sewer pipes of the kind, size and quality and laid in the manner hereinbefore specified for pipe used in constructing surface drainage sewers. Openings shall be made in curbs at<points of said connections in such manner -as to permit free and un- interrupted passage of storm waters, from the surface of the pavement hereinbefore specified, to said basins. 302 ADJUSTMENT OF PRESENT MACADAM PAVING. The present macadam paving where the.sameadjoins the pro- posed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and quality composing said macadam paving and having been thoroughly compacted itishall form a base or foundation for bi- tuminous macadam pavement to be placed thereon, The upper surface of said base or foundation when completed shall be two (2) inches below the finished grade of the proposed improvement where same adjoins said macadam paving. Upon the base or foundation, prepared as hereinbefore speci- fied, there shall be spread a layer of clean, hard broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of two (2) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be applied to the lime- stone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one (1) gallon thereof being evenly spread on end used in each and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size ranging from the largest particle that would pass through a sieve having circu- lar holes three -fourths inch in diameter to the largest particle that would pass through a sieve having . circular holes one-fourth inch in diameter. The limestone screenings shall be used in suf- ficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spread- ing of these limestone screenings the paving so covered, shall be given a thorough rolling with a roller of the weight and type here- inbefore named. This rolling shall continue until the screenings are driven into, and throughly bonded with, the layer of stone to which same is applied. The surface of the paving shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be applied to the surface a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread, as to insure not less than three-quarters (3/4) gallon thereof being evenly spread and used on each and every square yard of paving. Immediately after the second application of asphaltic cement is made and spread (and progressing therev&th) there shall be spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of thhree-fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such a manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of paving. A final rolling of the paving shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the pavement is thoroughly compacted, and brought to a surface, free from de- pressions and true to form and grade. 303 Any and all depressions developing during progress of the rolling, required in process of constructing the pavement shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The asphaltice cement used in the improvement herein pro- vided to be made shall be of such quality that represent#.tive samples collected from shipments thereof shall be capable of meeting the following requirements and of passing the following tests,to-wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural asphalt and a flux to be tested with and proven the best suited to the asphalt to be used and shall not be a by-product of the oil refining or gas manufac- turing industries. It shall be similar in character to that uesed successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so pre- pared for use as to best adapt it to the climatic and traffic -con- ditions of the roadway on which it is to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahren- heit under 200 grams for one minute. (4). It shall be practically free from water,decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be present in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel tw6 and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the one penetration of the residue shall not be less than one-half that tested as above described. (7). It shall be soluble in chemically pure carbon disul- phide at air temperature to the extent of at least 95% (8). Of this bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98J; shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in petrol- eum napha, at the air temperature to the extent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. 304 Ordinance or Contract Form. (a) MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be har d burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit: Fineness. The cement shall be so ground that 92 % will pass through a standard sieve, .having 10,000 meshes and 75% will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight Per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) .......:......................... 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. 305 MISCELLANEOUS SPECIFICATIONS —Continued Ordinance or Contract Form. (b) SEWER PIPE The tile pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from I any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said Spipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of nine hundred fifty—five and fourteen, hundredths dollars ($ 955.14 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of nine hundred fifty—five and fourteen hundredths dollars ($955.14 ) shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into ten installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, pavable annually, and sighed by the '..Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6.. That_ the Corporation. Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. 1. Adopted by the City Council of the City of Evanston -on'the 6th day of Febry A. D. 1923. Approved Febry 7th 1923. JOHN F. HAHN, H. P. PEARSONS, City Clerk, Mayor. 30'6 RECO2MNDATION, ESTIMATE AND ORDINANCE. RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: We herewith submit an ordinance providing that the Public Alley, extending from the north line of HAMILTON STREET to the south line of DEMPSTER STREET, in Block seventy-five (75), Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland cement concrete pavement, using a bituminous filler strip for expension j.oints in pavement, constructing necessary catch basins, catch basin connections to surface drainage sewer, adjusting manholes and macadam paving adjoining and connecting with the proposed improvement; to- gether with an estimate of the cost of said improvement and recommend the passage of said ordinance and the making of the improvement con- templated therein. Respectfully submitted, H. P PEARSONS WM. BL•ANCHARD. HAL 'W. SMITH. Board of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, Illinois. February 6th, 1923. ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that the Public Alley, extending from the north line of HAMILTO N STREET to the south line of DEEPSTER STREET, in Block seventy-five (75), Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland Cement Concrete pavement, using a bituminous filler strip for expansion joints in pavement, constructing necessary catch basins, catch basin connections to surface drainage sewer, ad- justing manholes and macadam paving adjoining and connecting with the proposed improvement; and presented to the City Council of the City of Evanston a recommendation that such improvement be made, I herewith submit an estimate of the cost of said improvement as described in said resolution, including labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making 9-nd collecting the assessment, as provided b law, viz: EST IMATE OF C OST 425 Cu. yds. of grading & $1.60 per cu. yd.................... 680.00 1450 Sq. yds. of Portland cement concrete paving com- plete in place @ $2.75 per sq. yd............. .........3,987.50 450 Lin. ft. of bituminous filler strip for expansion joints in paving, laid complete in place 0 12 g per lin. ft ..... .. .............................. 54,00 3 Brick catch basins including cast iron covers, plank bottoms,.excavation and back filling, complete in place Q•$80.00 each ..................................... 240.00 30 Lin ft. of 9 " internal diameter, vitrif ied, salt glazed tile pipe catch basin connections to sur- face drainage sewer, average depth of cut five (5) feet, including trenching and back filling, 1$id complete in place @ $1.00 per lin.ft............... 30.00 2 Manholes adjusted to grade Q $12.00 each ................ 24.00 80 Sq. yds. of macadam paving adjusted e- $1.20 per sq. yd.. 96.00 For lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment therefor, not to exceed six per centum (6%) of the above, to -wit: $5,111.50 ...................... 306.69 Total ............. $5,418.19 J. And I hereby certify :that in my opinion the above estimate does not exceed the probable cost of the above proposed improvement and the lawful expenses attending the same. Wm. BLANCHARD, Engineer of the Board of Local Im- provements of the City of Evanston. Dated, Evanston, Illinois. February 6th, 1923. AN ORDINANCE. Providing that the Public Alley, extending from the north line of HAMILTON STREET to the south line of Dempster Street, in Block seventy-five (75), Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland Cement Concrete pavement, using a bituminous filler strip for expansion joints in pavement, constructing necessary catch basins, catch basin connections to surface drainage sewer, adjusting manholes and macadam paving adjoining and connecting with the proposed improvement. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvement shall be made within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local improvement is as follows, to -wit: That the Public Alley, extending from the north line of HAMILTON STREET to the south line of DEMPSTER STREET „ in Block seventy- five (75), Village of Evanston, in the City of Evanston, County of Cook, State of Illinois, be and the same is hereby ordered improved as Follows: LOCATION OF PAVEMENT The center line of the pavement herein provided to be con- structed shall coincide with the center line of the alley within which said pavement is included. WIDTH OF PAVEMENT The width of the pavement herein provided to be constructed shall be nineteen (19) feet. GRADE OF PAVEMENT The grade of the upper surface of the finished pavement here- in provided to be constructed is hereby established as follows, measured in feet and decimal parts of a foot above the dc_tum of the City of Evanston, to -wit: Transverse Section of Alley Outer Edges of Pavement At the south line of Dempster Street. 19.30 At a point sixty-six (66) feet south of the south line of Dempster Street. 19.65 At a point one hundred twenty-six(126) feet south of the south line of Dempster Street. 19.30 At a point two hundred twenty-one (221) feet south of the south line of Dempster Street. 19.90 At a point two hundred ninety-one(291) feet south of the south line of Dempster Street. 19.40 At a point four hundred fifty-one (451) feet south of the south line of Dempster Street. 20.10 Center line of Pavement: 19.05 19.40 19.05 19.65 19.15 19.85 308 At a point five hundred fifty-eight (558) feet south of the south line of Dempster Street. 18.95 18..70 _At the north line of Hamilton Street. 19.60 19.35 Alley Paving. Ordinance Form. ALLEY PAVING The grade of the center line and outer edges of the pavement at intermediate points shall be respec- tively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane of the low water mark of Lake Michigan in the year A. D. 1847, as established by the Trustees of Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the northwest corner of Davis street and Sherman Avenue, in said City of Evanston. The upper surface of the pavement herein provided to be constructed, when completed, shall conform to the arc of a circle passing through the respective grade points in the center line and at the outer edges of the pavement, and shall be true and symmetrical. GRADING The alley herein provided to be improved shall be cleaned prior to the paving thereof, in a thorough manner of all deteriorated planking, blocking or other debris. The soil of the roadway shall then be ex- cavated or filled upon with other suitable soil, as the case may be, to such depth and shape as will bring the upper surface of the finished pavement, when constructed as hereinafter specified, to the elevations and grades hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable self- propelling roller or flooding with water as the case may require. Depressions or holes appearing as the pre - Para tion of the sub -grade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left , in the sub -grade, shall be removed by the contractor without extra charge. Ordinance and (a) Contract. CONCRETE PAVEMENT —ALLEY I Upon the subgrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement, composed of Portland cement, sand and gravel mixed by volume in ratios of one part of cement, two parts sand, and three parts of gravel with sufficient clean water to give proper plasticity and in the manner here- inafter set forth. The concrete shall be spread on the sub -grade in such quantity and to such form that of-. ter being compacted in place it shall have a uniform thickness of six inches. The Portland cement to be used in making this concrete pavement shall be of such quality that repre- sentative samples collected from shipments made for the job shall be capable of passing the following tests for fineness, soundness, initial setting, and tensile strength, to -wit: Fineness. The cement shall be ground so that 92 Jo will pass through a standard sieve, having 10,000 meshes and 757o' will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no check- ing, warping or swelling. Broken briquette of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified for the neat pat. Setting. The cement when mixed with twenty-eight per cent (by weight) of water, shall not take ,initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten l hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show tensile strength not less than as follows: Neat Cement 'age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) .................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. The sand to be used for making the concrete shall be free from dust, clay, loam, vegetable or other deleterious matter. a 11 1m.-9-98-,- 2_09 The grains of sand shall be angular and shall range in size from one -quarter inch down to the finest; but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind - drifted sand shall not be used. The sand shall be of such quality that the mortar composed of one part of the cement hereinbefore specified and three parts of sand, by weight, when made into briquettes, will de- velop a tensile strength at least equal to the strength of a mortar of the same consistency and proportion made with the same cement and Standard Ottawa sand. In no case shall the sand, when used for this 1 concrete, contain frost or lumps of frozen matter. The gravel to be used in making this concrete shall be clean, hard, free from dust, loam, vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable sizes- grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (1-4) inch. ; In no case shall the gravel when used for this concrete contain frost or lumps of frozen matter. The sand and gravel shall be clean when delivered on the job, and shall be kept clean until used The method used for measuring the ingredients in the concrete shall be one that will insure a uniform proportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be considered one cubic foot. The concrete shall be mixed in a batch machine mixer of a type that will insure a uniform distribution of the ingredients throughout the mass. Ingredients of the concrete or mortar shall be mixed to the de- sired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in color, and homogeneous. Clean water, free from oil, acid, alkali or vegetable matter shall be ad- mitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the gravel from the mortar. The concrete shall be handled rapidly from the mixer to its place in the pavement. Successive batches shall be deposited in place on the sub -grade in a continuous operation so that sections of the pavement be- tween expansion joints, hereinafter specified, shall be entirely completed and without the use of inter- mediate cross forms or bulk -heads. Concrete shall not be retempered or used that has partially hardened. The concrete shall be compacted and brought to the established grade and shaped with a template or straight edge, and shall be brought to a comparatively even surface. After the concrete has been so brought to grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even sur- face. Said roller shall not be less than five feet in length, and not less than eight (8) inches not more than twelve (12) inches in diameter and weighing not less than one hundred pounds (100 lbs.). The roller shall be operated across the pavement from side to side of same, by means of ropes attached to each side of the roller, at such angle with the center line of the pavement as to permit the roller to advance along the pavement two feet for each time across. After the roller has covered a given area in the manner de- scribed, the same area shall be similarly rolled by the roller for not less than three (3) times at intervals of . fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may be necessary to remove excess water. After the rolling has been completed the pavement shall be finished by two (2) applications of a belt made of canvas, not less than six (6) inches wide and not less than two (2) feet longer than the width of the pavement. For the first application, vigorous strokes at least twelve (12) inches long shall be used. The longi- tudinal movement of the belt along the pavement shall be very slight. j The second application of the belt shall be immediately after the water glaze or sheen disappears, and the stroke of the belt shall be not more than four (4) inches, and the longitudinal movement shall be a continuous forward movement. A suitable bridge to span the width of the pavement shall be used to finish the joints, no part of which shall be in contact with the finished work. A notched straight edge ten (10) feet in length shall be used for testing each transverse joint, prior to and subsequent to final finishing. The straight edge shall be placed over the joint, -parallel to the center line of the pavement and moved across from curb to curb. When the surface of the concrete upon testing shows to be high or low, concrete will be added or removed to bring the surface its true shape. The concrete adjoining transverse joints shall be dense in character and after rolling shall be finished with a wood float, which is divided through the center and which will permit finishing on both sides of the filler at the same time. The finished surface of the concrete shall not vary more than one -eighth (1-8) of an inch from a two foot straight edge placed upon the concrete in any position. Workmen shall not walk on the freshly laid concrete; and no one shall be allowed on the concrete after it has been worked into form and position with a template or straight edge, until it has thoroughly hardened. EXPANSION JOINTS Transverse expansion joints not less than three -eighths (318) inch or more than one-half (112) inch in . width shall be placed across the pavement at right angle to the center line of the roadway; spaced so as not to exceed thirty-three and one-third (33 113) feet apart. All expansion joints shall extend through the entire thickness of the pavement. In these expansion joints there shall be placed a prepared strip of bi- tuminous filler of the thickness hereinbefore specified for expansion joints and extending from the bottom of the pavement herein specified to the upper surface of the finished pavement. The upper edges of all joints and the upper outer edges of the pavement shall be neatly troweled to a radius of one -quarter (%) inch. 310 All metal, manholes, catch basin covers, and other fixed objects shall be separated from the concrete jpavement by a joint filler of the same character as hereinbefore specified for expansion joints; which joint filler shall extend through the entire thickness of the pavement. PROTECTIONS .� As soon as the concrete has hardened sufficiently to prevent being pitted, -the surface shall be spray- ed with water; and it shall be kept thoroughly vet for at least ten days. As soon as it can be done without !damage to the concrete, the surface thereof, during hot and dry weather and if unshaded shall be covered � vith not less than one inch of earth, sawdust, straw or other suitable and available material, which cover- ing shall be kept wet for at least four days after being placed. In dry and` hot weather freshly laid con- crete shall be protected by a canvas covering until it can be sprinkled or covered, as specified. CONCRETE PAVEMENT -ALLEY —Continued Ordinance and Contract Form. (c) The water and concrete aggregates shall' be heated if at any time during the progress of the work the temperature is, or from weather reports will likely during the next twenty-four hours drop to (35) thirty- five degrees Fahrenheit. The concrete shall be protected against freezing for at least ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established line, and their upper edges shall conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have previously been used. The pavement shall be thoroughly cleaned and open to the public as soon as the cement has set suffici- ently to receive the traffic without injury to the surface or body of the concrete. Alley Pavement. CATCH BASINS For the purpose of receiving storm waters from the surface of the pavement herein provided to be con- structed three (3) catch basins shall be constructed at the necessary points along the center line of said pavement. Said Catch basins sholl be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catch basins, when in place, to the upper surface of the proposed pavement. Said catch basins shall be cylindrical in shape having an internal diameter of thirty-six (36) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by means of three (3) header courses of brick, laid endwise and horizontally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catch basins. Said catch -basins shall have walls eight (8) inches thick built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch - basins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 112) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch -basins shall each rest on a solid bottom of two (2) inch pine planks, laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches hide. The said bottom shall be made circular in form, and shall measure.fifty-four (54) inches in diameter and shall Nave its upper side placed four(4) feet below the upper surface of the brick wall for said catch -basin. Said catch -basins shall be connected with the sewer, or severs as the case may be, now existing, or herein provided to be constructed, as the case may be, in and along the center line of the said pavement, along which center line and over said sewer or sewers, the respective catch -basins are to be constructed. Said catch -basins shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed tile pipe having an internal diameter of six (6) inches and of the type known as "Bell and Spigot," the metal of which pipes shall be three -fourths (314) of an inch in thickness and shall be not less than two (2) feet in length. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipe shall be se- curely sealed with a mortar of the quality herein required for brick walls in catch -basins. j Each catch -basin connection shall start in a six-inch "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the said sewer at a point not less than eight (8) feet in advance of the center of the catch -basin measured along and in the down stream direction of the sewer. The pipe shall be laid true to line and grade and the connection shall enter the catch -basin through the brick wall thereof at a point two and one-half (2 112) feet above the top of the plank bottom of said catch -basin. The pipe entering the catch -basin through the brick wall thereof, shall be an elbow with the bell end turned downward inside the catch -basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be back -filled as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the alley. The trenches shall be promptly back -filled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Izoigs 311 Said catch -basins shall each be equipped and fitted with a circular cast iron grate cover weighing not less than three hundred and sixty (360) pounds. Said grate to be so constructed as to freely admit water from the surface of the pavement to the catch -basin) and having a vertical height of nine (9) inches, the opening in said cover shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) inches at the top thereof. The diameter of the lid or grate for said covers shall be 22 314 inches. Said catch -basin covers herein provided to be furnished and set shall rest on the walls of the catch -basins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catch -basins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the upper surface of the pavement at points where said catch -basins are located. Said catch -basins herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: One at a point one hundred twenty-six (126) feet south of the south line of Dempster Street. One at a point two hundred ninety-one (291) feet south of the south line of Dempster Street. One at a point five hundred fifty-eight ( 558 ) feet south of the south line of Dempster Street. MANHOLES TO BE ADJUSTED AND BROUGHT TO GRADE The 2 brick manholes now located within the space herein provided to be paved, and which are already equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said manholes as may be necessary to bring the covers of the manholes to the height above specified and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one- half (1%) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. ADJUSTIENT OF PRESENT MACADAM PAVING. The present macadam paving where the same adjoins the pro- posed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and quality composing said macadam paving and having been thoroughly compacted it shall form a base or foundation for a bi- tuminous macadam pavement to be placed thereon. The up er surface of said base or foundation when completed shall be two p(2) inches below the finished grade of the proposed improvement where same adjoins said macadam paving. Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of .clean, hard broken lime- stone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure.a thickness of two (2) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial -rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be applied to the limestone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one (1) gallon thereof being evenly spread on and used in each and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbef ore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam,dust, vegetable or other deleterious substances, and broken to a size ranging from the.largest ; particle that would pass through a sieve having circular holes three - fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one Fourth inch in diameter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which the same is applied. 312 Immediately following the spreading of these limestone screenings the paving so covered, shall be given a thorough rolling with a roller of the weight and type. hereinbefore named. This rolling shall continue until the screenings are driven into, and thorough- ly bonded with, the layer of stone to which same is applied. The surface of the paving shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be applied to the surface a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread, as to insure not less than three-quarters (3/4) gallon thereof being evenly spread and used on each and every square yard of paving. Immediately after the second application of asphaltic cement is made and spread ( and progressing therewith) there shall be spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty- fourth of a cubic yard thereof being,evenly spread and used on each and every square yard of paving. A final rolling ofthe paving shall closely follow the spreading thereon of these granite. chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the pavement is thoroughly compacted, and brought 'to a surface, free from de- pressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement shall be filled, as the rolling continues, with the same respective kind of stone as that which the roller is operating. The asphaltic cement used in the improvement herein pro- vided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following requirements and of passing the following tests, to -wit: • (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural asphalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufac- turing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so pre- pared for use as to best adapt it to the climatic and traffic con- ditions of the roadway on which it is to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 milli- meters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 grams for one minute. (4). It shall be practically free from water, decomposi- tion products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be present in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6).. 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of -,the residue shall not be less than one-half that tested as above des.. cribed: (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95%. 313 (8). Of the bitumen of the asphaltic cement which is so soluble in carbon disulphide at least 98T1% shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in petrol- eum napha, at the air temperature to the extent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. Ordinance or (a) Contract Form. MISCELLANEOUS SPECIFICATIONS All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or'lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles., In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit: Fineness. The cement shall be so ground that 92 % will pass through a standard sieve, having 10,000 meshes and 75% will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength , 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist'air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the .period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. 314 VT .MISCELLANEOUS SPECIFICATIONS —Continued Ordinance or (b) Contract Form. SEWER PIPE The tile ,pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that ,would be imposed upon it from within or without. Said spipe shall give a clear ring when lightly struck ;with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the improvement hereinbefore specified shall be of the best quality E .and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. ' Section 3. That said improvement shall be made and the whole cost thereof including the sum of three hundred six and sixty—nine hunidredths dollars ($ 306.69 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of three hundred six and sixty—nine hundredths dollars ($ 306.69 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property; and also the assessment on each lot and parcel of land therein assessed, shall be di'dded into five installments in the I manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section i. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at fthe rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 6th day of Febry A. D. 1923. Approved Febry 7th, 1923. John F. Hahn, H. P. Pearsons, City Clerk. Mayo.r. f1t9198 RECOMMENDATION, ESTIIv1ATE AND ORDINANCE. 315 RECOIDONDATION BY BOARD OF LOCAL, IMPROVElaNTS . To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: We herewith submit an ordinance providing that the Public Alleys extending: from the north line of Simpson Str et to the south line of Noyes Street in Gaft'ield's Subdivision of "th east five hundred twelve (512) feet of the south one-half W the south one- half ( ) of the m uthwrest one -quarter (-t) of Section seven (7) , Town- ship forty-one (41) North, Range fourteen (14) East of the Third Principal Meridian -and in Block ninety-one (91) Village of Evanston, excepting th-erefrom the Public Alleys lying within the,west•two hundred ten and three-quarters(210-3/4) feet of said Block ninety-one (91), in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland Cement Concrete pavement, using a bituminous filler strip for expansion joints in pavement, constructing necessary surface.drainage sewer, catch basins, catch basin connections to surface drainage sewer and manholes, adjusting present macadam paving adjoinging and connecting with the proposed improvement; together with an gstimate of the cost of said improvement and recommend the passage of said ordinance and the making of the improvement contemplated there- in. Respectfully submitted, H. P. PEARSONS, `7m. BLANCHARD , Hal W . SMITH, Board of Local Improvements of the City of Evanston, Illinois. Dated,Evanston, Illinois February 6th, 1923. ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEIVIFNTS . To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Imrpovements of the City of Evanston having adopted a resolution that the Public Alleys extending from the north line , of Simpson Street to the south line of Noyes Street in Gaffiledts Subdivision of the east five hundred twelve (512) feet of the south one- half(-) of the south one-half ('J) of the southwest one -quarter (*) of Section seven (7), Township forty-one (41) North, Range fourteen (14) East of the Third (3rd) Principal Meridian and in Block ninety-one (91) Village of Evanston, excepting therefrom the Public Alleys lying with- in the west two hundred ten and three-quarters (210-;-) feet of said Block ninety-one (91), in the City of Evanston. County of Cook, State of Illinois, be improved by grading, paving with a Portland Cement Con- crete pavement, using a bituminous filler strip for expansion joints in pavement, constructing necessary surface drainage sewer, catch basins, catch basin connections to surface drainage sewer and manholes, adjust- ing present macadam paving adjoining and connecting with the proposed improvement; and presented to the City Council of the City of Evanston a recommendation that such improvement be made, I herewith submit an estimate of the cost of said improvement as described in said resolution, including labor,,material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment, as provided by law, viz: ESTIMATE OF COST. 713 Cu. Yds. of grading @ $1.60 per cu. yd............... $ 1,140.80 2300 Sq. yds. of Portland Cement Concrte paving complete in place @ $2.75 per sq. yd................. 6,325.00 656 Lin. ft. of bituminous filler strip for expansion joints in paving laid complete in place @12,0 per lin. ft.......................................... 78.72 316 880 Lin. ft. of nine inch internal diameter, -vitrified, salt glazed, tile pipe surface drainage sewer (average depth of cut six (6) feet laid complete in place in- cluding trenching and back filling @ $2.35 per lin.f t.$2,068.00 4 Brick manholes including cast iron covers, excavation and back filling complete in place @$80.00 each....... 320.00 4 Brick catch.basins including cast iron covers, plank bottoms, excavation and back filling complete in place at $80.00 each..... 320.00 40 Lin. ft. of 9 " internal diameter, vitrified, salt glazed, tile pipe catch basin connections to,surfa.ce drainage sewer, average depth of cut five (5) feet, including trenching and back filling, laid complete in place @ $1.00 per lin. ft........................... 40.00 90 Sq. yds. of macadam paving adjusted @$1.20 per sq. yd. 108.00 For lawful expenses attending the proceddings for making said improvement and the cost of making and collecting the assessment therefor not to exceed six (6) per centum of the above, to -wit: J10,400.52 ........................ 624.03 Total...............11,024.55 And I hereby certify that in my opinion the abvoe estimate does not exceed the probable cost of the above proposed improvement and the lawful expenses attending the same. elm. Blanchard. Engineer of the Board of Local Improvements of the City of Evanston. Dated, Evanston, Illinois. February 6th, 1923. AN ORDINANCE Providing that the Public Alleys extending from the north line of Simpson Street to the south line of Noyes Street in Gaffield's Subdivision of the east five hundred twelve (512) feet of the south one-half (+) of the south one-half (*) of the southwest one-quarter(f) of Sections even (7) Township forty-one (41) Norht, Range fourteen (14) East of the Third (3rd) Principal Meridian and in Block ninety-one (91), Village of Evanston, excepting there- from the Public Alle s lying within the west two hundred ten and three-quarters (210 ) feet of said Block ninety-one 191) in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland Cement Concrete pavement, using a bituminous filler strip for expansion joints in pavement, constructing necessary surface drainage sewer, catch basins, catch basin connections to surface drainage sewer and manholes, adjusting present macadam paving adjoining and connecting with theproposed improvement. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvements hall be made within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local im- provement is as follows, to -wit: That the Public Alleys extending from the north line of Simpson Street to the south line of Noyes Street in Gaffield's Subdivision of the east five hundred twelve (519) feet of the south one-half (t) of the south one-half (*) of the southwest one -quarter (-f) of Section seven (7), Township forty-one (41) North, Range fourteen (14) East of the Third (3rd) Principal Meridian and in Block ninety-one (91) Village of Evanston, excepting therefrom the public Alleys lying within the west two hundred ten and three-quarters (210-*) feet of said Block ninety- one (91), in the City of Evanston, County of Cook, State of Illinois, be and the same are hereby ordered improved as follows: LOCATION OF PAVEMENT The center line of the pavement herein provided to'be con- structed shall coincide with the center line of the alley within which "said improvement` 'i's included. Width of Pavement 317 The wisths of the pavement herein provided tobe cori- structed shall be as follows: At the north line of Simpson Street, 19 feet. At a point seven hundred sixty-eight (768) ft* north of Simpson Street 19 feet. At a point one hundred forty-five (145) feet west of Orringt on Avenue 19 feet. At a point one hundred eighty (180) ft . south of Noyes Street 15 feet At the south line of Noyes Street 15 feet Grade of Pavement The grade of the upper surface of the finished pavement herein provided to be constructed is hereby established as follows, measured in feet and decimal parts of a foot above the datum plane of the City of Evanston, to -wit: Transverse Section of Alley Outer Edges Center Line of Pavement of Pavement At the north line of Simpson Street. 17.75 18.00 At a point fifty-eight (58) feet north of the north line of Simpson Ste 18180 18.55 At a point one hundred fifty-eight (158) feet north of the north line of Simpson St. 18.20 17.95 At a point two hundred thirty-three (233) feet north of the north line of Simp- son Street 18.60 18.35 At a point four hundred wighty-three (483) feet north of the north line of Simpson Street. 17.40 17.15 At a point five hundred thirty-three (533) feet north of the north line of Simpson Street 17.80 17.55 At a point six hundred fifty-eight (658 ) feet north of the north line of Simpson Street 17.20 16.95 At a point seven hundred sixty-eight (768) feet north of the north line of Simpson Street 17,80 17.55 At a point one hundred forty-five (145) feet west of the west line of Orrington Avenue 17.20 16.95 At the south line of Noyes Street 18.20 17.95 ALLEY PAVING The grade of the center line and outer edges of the pavement at intermediate points shall be respec- tively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane of the low water mark of Lake Michigan in the year A. D. 1847, as established by the Trustees of Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the northwest corner of Davis street and Sherman Avenue, in said City of Evanston. The upper surface of the pavement herein provided to be constructed, when completed, shall conform to the arc of a circle passing through the respective grade points in the center line and at the outer edges of the pavement, and shall be true and symmetrical. GRADING The alley herein provided to be improved shall be cleaned prior to the paving thereof, in a thorough manner of all deteriorated planking, blocking or other debris. The soil of the roadway shall then be ex- cavated or filled upon with other suitable soil, as the case may be, to such depth and shape as will bring the upper surface of the finished pavement, when constructed as hereinafter specified, to the elevations and grades hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable self- propelling roller or flooding with water as the case may require. Depressions or holes appearing as the pre- paration of the sub -grade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left in the sub -grade, shall be removed by the contractor without extra charge. CONCRETE PAVEMENT —ALLEY Upon the subgrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement, composed of Portland cement, sand and gravel mixed by volume in ratios of one part of cement, two ,parts sand, and three parts of gravel with sufficient clean water to give proper plasticity and in the manner here- inafter set forth. The concrete shall be spread on th e sub -grade in such quantity and to such form that af- ter being compacted in place it shall have a uniform thickness of six inches. The Portland cement to be used in making this concrete pavement shall be of such quality that repre- sentative samples collected from shipments made for the job shall be capable of passing the following tests for fineness, soundness, initial setting, and tensile strength, to -wit: Fineness. The cement shall be ground so that 927o will pass through a standard sieve, having 10,000 meshes and 75% will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at -the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- 1 tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no check- ing, warping or swelling. Broken briquette of the neat cement which have remained in air one day and in !i water six days shall likewise withstand the steaming and boiling specified for the neat pat. Setting. The cement when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) .................................. 600 lbs. 3 One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. i The' sand to be used for making the concrete shall be free from dust, clay, loam, vegetable or other deleterious matter. The grains of sand shall be angular and shall range in size from one -quarter inch down to the finest; but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind - drifted sand shall not be used. The sand shall be of such quality that the mortar composed of one part of the cement hereinbefore specified and three parts of sand, by weight, when made into briquettes, will de- velop a tensile strength at least equal to the strength of a mortar of the same consistency and proportion made with the same cement and Standard Ottawa sand. In no case shall the sand, when used for this l; concrete, contain frost or lumps of frozen matter. The gravel to be used in making this concrete shall be clean, hard, free from dust, loam, vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable sizes grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (1-4) inch. In no case shall the gravel when used for this concrete contain frost or lumps of frozen matter. The sand and gravel shall be clean when delivered on the job, and shall be kept Flean until used. The method used for measuring the ingredients in the concrete shall be one that will insure a uniform proportion of•materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be considered one cubic foot. The concrete shall be mixed in a batch machine mixer of a type that will insure a uniform distribution of the ingredients throughout the mass. Ingredients of the concrete or mortar shall be mixed to the de- sired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in color, and homogeneous. Clean water, free from oil, acid, alkali or vegetable matter shall be ad- mitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the gravel from the mortar. F: 319 The concrete shall be handled rapidly £roan the mixer to its place in the pavement. Successive batches , shall be deposited in place on the sub -grade in a continuous operation so that sections of the pavement be= tween expansion joints, hereinafter specified, shall be entirely completed and without the use of inter- mediate cross forms or bulk -heads. Concrete shall not be retempered or used that has partially hardened. The concrete shall be compacted and brought to the established grade and shaped with a template or straight edge, and shall be brought to a comparatively even surface. After the concrete has been so brought to grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even sur- face. Said roller shall not be less than five feet in length, and not less than eight (8) inches not more than . twelve (12) inches in diameter and weighing not less than one hundred pounds (100 lbs.). The roller shall be operated across the pavement from side to side of same, by means of ropes attached to each side of the roller, at such angle with the center line of the pavement as to permit the roller to advance along the pavement two feet for each time across. After the roller has covered a given area in the manner de- scribed, the same area shall be similarly rolled by the roller for not less than three (3) times at intervals of j fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or'as many times as may be , necessary to remove excess water. After the rolling has been completed the pavement shall be finished by two (2) applications of a belt made of canvas, not less than six (6) inches wide and not less than two (2) feet longer than the width Af the pavement. For the first application, vigorous strokes at least twelve (12) inches long shall be used. The longi- tudinal movement of the belt along the pavement shall be very slight. The second application of the belt shall be immediately after the water glaze or sheen disappears, and the stroke of the belt shall be not more than four (4) inches, and the longitudinal movement shall be a continuous forward movement. A suitable bridge to span the width of the pavement shall be used to finish the joints, no part of which shall be in contact with the finished work. A notched straight edge ten (10) feet in length shall be used for testing each transverse joint, prior to and subsequent to final finishing. The straight edge shall be placed over the joint, parallel to the center line of the pavement and moved across from curb to curb. When the surface of the concrete upon testing shows to be high or low, concrete will be added or removed to bring the surface its true shape. The concrete adjoining transverse joints shall be dense in character and after rolling shall be finished with a wood float, which is divided through the center and which will permit finishing on both sides of the filler at the same time. The finished surface of the concrete shall not vary more than one -eighth (1-8) of an inch from a two foot straight edge placed upon the concrete in any position. Workmen shall not walk on the freshly laid concrete; and no one shall be allowed on the concrete after it has been worked into form and position with a template or straight edge, until it has thoroughly hardened. EXPANSION JOINTS Transverse expansion joints not less than three -eighths (318) inch or more than one-half (112) inch in width shall be placed across the pavement at right angle to the center line of the roadway; spaced so as not to exceed thirty-three and one-third (33 113) feet apart. All expansion joints shall extend through the entire thickness of the pavement. In these expansion joints there shall be placed a prepared strip of bi- tuminous filler of the thickness hereinbefore specified for expansion joints and extending from the bottom of the pavement herein specified to the upper surface of the finished pavement. The upper edges of all joints and the upper outer edges of the pavement shall be neatly troweled to a radius of one -quarter (/) inch. All metal, manholes, catch basin covers, and other fixed objects shall be separated from the concrete pavement by a joint filler of the same character as hereinbefore specified for expansion joints; which joint, filler shall extend through the entire thickness of the pavement. I PROTECTION PLATES As soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be spray- ed with water; and it shall be kept thoroughly vet for at least ten days. As soon as it can be done without damage to the concrete, the surface thereof, during hot and dry weather and if unshaded shall be covered with not less than one inch of earth, sawdust, straw or other suitable and available material, which cover- ing shall be kept wet for at least four days after being placed. In dry and hot weather freshly laid con- crete shall be protected by a canvas covering until it can be sprinkled or covered, as specified. The water and concrete aggregates shall be heated if at any time during the progress of the work the temperature is, or from weather reports will likely during the next twenty-four hours drop to (35) thirty- five degrees Fahrenheit. The concrete shall be protected against freezing for at least ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established ' line, and their upper edges shall conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have previously been used. The pavement shall be thoroughly cleaned and open to the public as soon as the cement has set suffici- ently to receive the traffic without injury to the surf ace or body of the concrete. i OF— IY SURFACE DRAINAGE SEWER* For the purpose of carrying off storm waters from the surface of the pavement herein provided to be constructed, surface drainage sewero of vitrified, salt glazed, tile pipe shall be laid as hereinafter specified. Said sewer$)shall be laid in open trenches in the ground in such manner as to conform to the elevations, lines and grades hereinafter specified. The pipe used in the construction of said sewer# shall be of the type known as "Bell and Spigot" having an internal diameter of nine (9) inches, the metal of which pipe shall have a thickness of thirteen -sixteenths (13/16) of an inch and shall be not less than two (2) feet in length, cylindrical, straight, smooth, thoroughly vitrified, salt glazed, free from cracks or blisters and of the best quality and workmanship. The joints between the pipes shall be securely sealed with a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1/ ) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The joints between said pipes shall be wiped and pointed inside the pipes. The interior of the pipes shall be kept free from dirt or refuse of every description and shall be left clean at the completion of the work. The open trenches excavated to receive said seweip, shall be made at least twelve (12) inches wider than the ex- terior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing joints. The materials excavated shall be kept compactly along the sides of the trench and shall be backfilled as soon as practic- able in order to occasion the least possible inconvenience to the public in use of the street or alley as the case may be. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. The open and unconnected ends of said sewer* shall each be securely closed with a salt glazed, vitrified tile disc, and sealed in the manner above specified for joints between pipes. Said sewer a_ s....,... as the case may be shall be laid as follows, to -wit: In and along the center line of said alleys, fron and connecting with the sewer now in place along the center line of Simpson Street, north t o .a point seven hundred sixty-eight (768) feet north of the north line of Simpson Street thence east to a point one hundred fifty-three (153) feet west of the west line of Orrington Avenue. The internal diameter of this sewer shall be nine (9) inches. At its connection with the aforesaid sewer, the elevation of the in- side bottom of this sewer shall be ten (10) feet above the datum plane hereinbefore defined and the grade thereof shall rise thence at a uniform rate to an elevation of thirteen and four tenths (13.4) feet above said datum at its terminus. IZ19198 MANHOLES 321 a� Four brick manholes shall be built of* hard burned sewer brick, upon the sewer or severs, as the case may be, hereinbefore provided to be constructed and shall be located at the points hereinafter specified. Said manholes shall be placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbefore specified fi in such manner as to bring the tops of the iron covers herein required for said manholes when in place to the upper ' surface of the proposed pavement. Said manholes shall be cylindrical in shape having an internal diameter of thirty- six (36) inches at the upper surface of the base and upward to the lowest header course being uniformly drawn in to twenty-four (24) inches in diameter at the top of the masonry by means of six (6) header courses of brick laid end- wise and horizontally, the diameter being decreased uniformly by each course to fit the iron covers hereinafter specified to be furnished and set on the walls of said manholes. The walls of said manholes shall rest upon the base thereof without offsetting and shall be eight (8) inches thick; built (except as above specified for header courses) of alter- nate vertical and horizontal courses of brick. The brick used in the construction of said manholes shall be thoroughly wetted with water before being placed and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 /) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity.. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manholes shall begin at a point five (5) inches below the outside bottom of the sewer hereinbefore specified and shall extend upward to said outside bottom and along the sides of said sewer to a point midway between the top and bottom of said sewer, said base to be circular in form, the diameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manholes shall be neatly removed leaving the lower half thereof to form the invert of the manhole. Said manholes shall each be equipped with a circular castiron cover having a tight lid, weighing not less than five hundred and forty (540) pounds, of the type known as "Chicago City Standard Heavy" having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two (22) and three - fourths (/) inches at the top thereof. Said manhole covers herein specified to be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the tops of the walls of said manholes, which walls shall be built to such height, as will bring the tops of the covers when set in place, to the surface of the pavement hereinbefore specified. Said manholes herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: One at the center line of Simpson Street. One at a point two hundred thirty-three (233) feet north of the north line of Simpson Street. One at a point four hundred eighty-three (483) feet north of the north line of Simpson Street. One at a point seven hundred sixty-eight (768) feet north of the north line of Simpson Street* 7�"3 22 Alley eavemeni. CATCH BASINS For the purpose of receiving storm waters from the surface of the pavement herein provided to be con- structed Four (4) catch basins shall be constructed at the necessary points along the center line of said pavement. Said Catch basins sholl be constructed of hard burned sewer brick and placed -vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catch basins, when in place, to the upper surface of the proposed pavement. Said catch basins shall be cylindrical in shape having an internal diameter of thirty-six (36) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by means of three (3) header courses of brick, laid endwise and horizontally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catch basins. Said catch -basins shall have walls eight (8) inches thick built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch - basins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 112) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch -basins shall each rest on a solid bottom of two (2) inch pine planks, laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. ' The said bottom shall be made circular in form, and shall measure,fifty-four (54) inches in diameter and shall have its upper side placed four(4) feet below the upper surface of the brick wall for said catch -basin. Said catch -basins shall be connected with the sewer, or sewers as the case may be, now existing, or herein provided to be constructed, as the case may be, in and along the center line of the said pavement, along which center line and over said sewer or sewers, the respective catch -basins are to be constructed. Said catch -basins shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed tile pipe having an internal diameter of six (6) inches and of the type known as "Bell and Spigot," the metal of which pipes shall be three -fourths (314) of an inch in thickness and shall be not less than two (2) feet in length. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipe shall be se- curely sealed with a mortar of the quality herein required for brick walls in catch -basins. Each catch -basin connection shall start in a six-inch "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the said sewer at a point not less than eight (8) feet in advance of the center of the catch -basin measured along and in the down stream direction of the sewer. The pipe shall be laid true to line and grade and the connection shall enter the catch -basin through the brick wall thereof at a point two and one-half (2 112) feet above the top of the plank bottom of said. catch -basin. The pipe entering the catch -basin through the brick wall thereof, shall be an elbow with the bell end turned downward inside the catch -basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be back -filled as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the alley. The trenches shall be promptly back -filled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch -basins shall each be equipped and fitted with a circular cast iron grate cover weighing not less than three hundred and sixty (360) pounds. Said grate to be so constructed as to freely admit water from the surface of the pavement to the catch -basin) and having a vertical height of nine (9) inches, the opening in said cover shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) inches at the top thereof. The diameter of the lid or grate for said covers shall be 22 314 inches. Said catch -basin covers herein provided to be furnished and set shall rest on the walls of the catch -basins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catch -basins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the upper surface of the pavement at points where said catch -basins are located. Said catch -basins herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: One at a point one Jhundred fifty-eight (158) feet north of the north line of Simpson Street. One at a point four hundred eighty-three (483) feet north of the north line of Simpson Street. One at a point six hundred fifty-eight (658) feet north of the north line of Simpson Street. One at a point one hundred ninety (190) feet south of the south line of Noyes Street. IZ 0198 2 ADJUSTMENT OF PRESENT MACADAM PAVING 323 The present macadam paving where the same adjoins the pro- posed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and quality composing said macadam paving and having been thoroughly compacted it shall form a base or founda- tion for a bituminous macadam pavement to be placed thereon. The upper surface of said base Lr foundation when completed shall be two (2) inches below the finished grade of the proposed improvement where same adjoins said macadam paving. Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a•thickness of two (2) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layeer thereof is dry, there shall be applied to the limestone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one (1) gallon thereof being evenly spread on and used in each and every square yard. of paving, in addition to the squee-gee or second application coat herein- after required. Immediately after, and prigressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam dust, vegetable or other deleterious substances, and broken to a size ranging from the, largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diameter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied, Immediately following the spreading of these limestone screenings the paving so covered, shall be given a thorough rolling with a roller of the w4bight and type herein - before named. This rolling shall continue, until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the paving shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be Applied to the surface a second application of asphaltic cement of the same kind and quality that is used in the first application. This second application shall be sufficient in quantity and so applied and spread, as to insure not less than three-quarters (f) gallon thereof being evenly spread and used on each and every square yard of paving. Immediately after the second application of asphaltic cement is made and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maxi- mum diemension of three -fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of paving. A final rolling of the paving shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the pavement is thoroughly compacted, and brought to a surface, free from depressions and true to form and grade. 324 Any and all depressions developing during progress of the rolling, required in process of constructing the pavement sh$11 be filled, as the rolling continues, with the same respective k1hd of stone as that on which the roller is operating. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative sanples collected from shipments thereof shall be capable of meeting the following requirements and of passing the following tests, to -wit: (1) The asphaltic cement shall consist of not less than sixty -five -per cent refined, solid natural asphalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refininf or gas manu- facturing industries. It s7gal.l be similar in character to that greed successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so prepared for use as to best adapt it to the climatic and traffic conditions of the roadway on which it is to be used. (2) Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3) It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not 4e harder than one millimeter penetration at 32 degrees Fahrenehti under 200 grams for one minute. (4) It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or ether injurious matters, and the various hydricarbons composing it shall be present in homogeneous solution, no granular consti- tuent being present. (5) It must not flash below 350 degrees ]Fahrenheit when tested in a New York s tate closed oil tester. (6) 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of of the residue shall not be less than one-half that tested as above described. (7) It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95,%. (8) 0f the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98-J,% shall be soluble in cold carbon tetrachloride. (9) The bitumen of the cement shall be soluble in petroleum naptha, at the air temperature to toe extent of not less than 72 per cent. (10) Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. atq,987 - , -- 32_5 7 MISCELLANEOUS SPECIFICATIONS BRICK 1 All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick , shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit. - Fineness. The cement shall be so ground that 92 % will pass through a standard sieve, having 10,000 meshes and 75 Jo will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age I Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the .period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The tile ,pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said !pipe shall give a clear ring when lightly struck, with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of any inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. r,3 2G All .the material used in the construction of the impriovement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of six hundred twenty—four and three hundredths dollars ($ 624.03 ), being the amount. included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, ' A. D. 1897, and the amendments thereto, and that said sum of s hundred twenty—four and three hundredths dollars ($ 624.03 ), shape applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into five installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section 5. And,for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 6th day of Febye A. D. 1923. Approved Feby. 7th, 1923. John F. Hahn H.P. Pearsons, City Clerko Mayor IZ 0198 327 RECOMMENDATION, ESTIMATE AND ORDINANCE RECOMMENDATION BY BOARD OF LOCAL INPROVENENTS To the Mayor and Aldermen of the City of E'vansto n in City Council Assembled: We herewith submit an ordinance providing that a combined storm water and house drainage sewer be constructed of vitrified, salt glazed, tile pipe including necessary brick manholes and brick catch basins, Y-branches for house and catch basin connections to sewer, in FOWLER AVENUE in the City of Evanston, County of Cook, State of Illinois, from and connecting with the sewer now in place along the center line of LAKE STREET south to the center line of GREENWOOD STREET; together with an estimate of the cost of said improvement and recommend the passage of said ordinance and the making of the improvement contemplated therein. Respectfully submitted, H.P. PEARSONS, WM. BLANCHARD, . HAL W SMITH. Board of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, Illinois February 6th, 1923. ESTIMATE OF ENGINEER OF BOARD OF'LOCAL IMPROVEMENTS To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that a combined storm water and house drainage sewer be constructed of vitrified, salt glazed, tile pipe including necessary brick manholes and brick catch basins, Y-branches for house and catch basin connections to sewer, in FOWLER AVENUE in the City of Evanston, County of Cook, State of Illinois,. from and connecting with the sewer now in place along the center line of LAKE STREET south to the center line of- GREENWOOD STREET; and presented to the City Council of the Uity of Evanston a recommendation that such improvement be mane, I herewith submit an estimate of the cost of said improve- ment as described in said resolution, including labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assess- ment, as provided by law, viz: ESTIMATE OF COST 550 Lin. ft. of 12-inch internal diameter, vitrified, salt glazed, tile pipe sewer including necessary Y-branches for house and catchbasin connections laid complete in place including trenching and back filling (average depth of cut eleven (11) feet) ® 92.50 per lin. ft. ' . . $ 1,375.00 3 Birek manholes including.cast iron covers, exca- vation and backfilling complete in place 9 f100.00 each . . . . . . . . . . 300.00 2 Brick catch basins including connections to sewer circular cast iron coversi, plank floors, excava- tion and back filling complete in place ® $90.00 each . . . . . . . . 0 . . . • . . 180.00 For lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment therefor, not to exceed six (6) per centum of the above, to -wit: 01,855.00 111.30 Total 1,966.30 328 And I hereby certify that in my opinion the above estimate does'not exceed the probable cost of the above proposed improvement and the lawful expenses attending the same. Wm. Blanchard, Engineer of the Board of Local Im- provements of thelity of Evanston. Dated, Evanston, Illinois, February 6th, 1923. AN ORDINANCE Providing that a combined storm water and house drainage sewer be constructed of vitrified, salt: glazed, tile pipe including necessary brick manholes and brick catch basins, Y-branches for house and catch basin connections to sewer, in FOWLER AVENUE in the.City of Evanston, County of Cook, State of Illinois, from and connecting with the sewer now in place along the center line of LAKE STREET south to the center line of GREENWOOD ST + 1T. BE IT ORDAINED BY THE CITY - COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvement shall bemade within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality'and description of which local improvement is as follows, to -wit: That a combined storm water and house drainage sewer made of vitrified, salt glazed, tile pipe, shall be constructed in and along the center line of Fowler Avenue, from and connecting with the sewer now in place along the center line of Lake Street to the center line of Greenwood Street. The internal diameter of this sewer shall be twelve (12) inches. Said sewer shall be connected vii th the sewer now in place in Lade Street. At its connection with the aforesaid sewer in Lake Street, the elevation of.the inside bottom of the sewer herein provided to be laid shall be four (4) feet above the satum plane hereinafter defined and shall rise thence at a uniform. rate to an elevation of five (5) feet above said datum plane at the south line of Lake Street and shall rise thence at a uniform rate to an elevation of seven (7) feet above said datum plane at its terminus. DATUM PLANE The datum plane hereinbefore mentioned is the plane of low water mark of Lake Michigan in the year A.D.: 1847 as established by the Trustees of Illinois and Michigan Canal, and is twenty- two and forty-one hundredths (22.41)• feet below the U.S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to building known as City Hall, located at thenorthwest corner of Davis Street and Sherman Avenue in said City of Evanston. EXCAVATION AND BACK FILLING The ground shall be excavated in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints and setting and closing Y-branches. The materials excavated shall be kept compact and shall be backfilled as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the street. The trenches shall be promptly backfilled to a depth of twelve (12 ) inches above the top- of- the pipes. -The soil shall be carefully packed under and around the pipes. In no case from the commencement to the termination of the work shall more than five hundred feet of trench be opened in advance of the completed backfilling. Any and all pavements or crosswalks distrubed in the performance of the work shall be restored to a condition as safe and serviceable as before being distrubeder Free access shall be left to all fire hydrants and water gates. . Provision shall be made. for. the flow of sewers, drains or water courses disturbed during the progress of the work. BRICK All brick used in the improvement herein provided to be made shall be hard burned sewer brick of the best quality. The 329 brick shall be moistened shortly before being laid in the work. CEMENT All cement used in the improvement herein provided to be made shall be Portland cement of the best quality, The cement shall be carefully protected from moisture, freshly mixed for the work in hand, and shall be used before initial setting has occurred. SAND All sand used for mortar in the improvement herein pro- vided to be made shall be clean, coarse and sharp grained; containing no particles larger than would pass through a sieve of one -eighth inch mesh. Socket pipes, cylindrical, emooth,straight, thoroughly vitrified, well glazed, sound, and in all respects of the best quality and workmanship for the purpose, shall be used in building the sewer herein provided to be constructed. The pipes shall give a clear sharp ring whens truck with a mason's hammer. The popes shall be not less than two feet in length. The joints between the pipes shall be securely sealed with the same quality of mortar herein specified for manholes and catch basins. The joints shall be wiped and pointed inside the pipes. The interior of thepipes shall be kept free from dirt or refuse of every description as tJAe work progresses,' and shall be left clean at the completion of the work* The six-inch Y-branch, or house connection slant, shall be placed in the sewer, herein provided to be constructed, in front of and for the use of, each and every lot of subdivided land having a direct frontage of thirty feet or less on the line of said improvement; and in addition thereto ohe such Y-branch shall be placed in said sewer in front of and for the use of each and every thirty -feet of frontage of each and every lot of subdivided land having a greater direct frontage than thirty feet on the line of said improvement. Any and all property subdivided into lots in such manner as to side on the line of said improvement shall have one such Y-branch placed in said sewer opposite and for the use of each and every thirty feet of such siding, except the front seventy- five feet thereof. Unsubdivided tracts abutting on the line of said improve- ment shall have one such Y-branch placed in said sewer opposite and for the use of each .and every thirty feet of such tract so abutting. The openings in Y-branches shall be closed with standard, vitrified, tile discs, sealed with cement mortar as specified for joints between pipes. MANHOLES Three . brick manholes shall be built of hard burned sewer brick, upon the sewer or sewers, as the case may be, hereinbef ore provided to be constructed and shall be located at the points hereinafter specified. Said manholes shall he placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbef ore specified in such manner as to bring the tops of the iron covers herein required for said manholes when in place to the upper surface of the proposed pavement.- Said manholes shall be cylindrical in shape having an internal diameter of thirty- six (36) inches at the upper surface of the base and upward to the lowest header course being uniformly drawn in to twenty-four (24) inches in diameter at the top of the masonry by means of six (6) header courses of brick laid end- Nvise and horizontally, the diameter being decreased uniformly by each course to fit the iron covers hereinafter specified to be furnished and set on the walls of said manholes. The walls of said manholes shall rest upon the base thereof without offsetting and shall be eight (8) inches thick, built (except as above specified for header courses) of alter- nate vertical and horizontal courses of brick. The brick used in the construction of said manholes shall be thoroughly wetted with water before being placed and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. 330 The base of said manholes shall begin at a point five (5) inches below the outside bottom of the sewer hereinbefore specified and shall extend upward to said outside bottom and along the sides of said sewer to a point midway between the top and bottom of said sewer, said base to be circular in form, the diameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manholes shall be neatly removed leaving the lower half thereof to form the invert of the manhole. Said manholes shall each be equipped with a circular castiron cover having a tight lid, weighing not less than five hundred and forty (540) pounds, of the type known as "Chicago City Standard Heavy" having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two (22) and three - fourths (Y4) inches at the top thereof. Said manhole covers herein specified to be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the tops of the walls of said manholes, which walls shall be built to such height as will bring the tops of the covers when set in place, to the surface of the pavement hereinbefore specified. Said manholes herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: In Fowler Avenue: One at the south line of Lake Street One at a point two hundred fifty (250) feet south of the south line of Lake Street. One at the center line of Greenwood Street. CATCH BASINS Two brick catch basins shall be built and connected with the sewers herein provided to be constructed at the necessary points along said sewers. Said catch basins shall be constructed in the manner below specified. Said catch basins shall be cylindrical in shape, having an internal diameter of forty-two inches at the bottom and upward to the lowest header course, being drawn in at the top of the masonry by means of twelve header courses laid endwise and hori- zontally. The diameter shall be decreased uniformly by each header course to fit the iron covers hereinafter specified to be placed on said catch basins. Said catch basins shall have walls eight inches thick, built, except as above specified, of two courses of brick placed edgewise in perpendicular course&. The brick used in the construction of said catch basins shall be hard burned sewer brick and shall be laid in mortar composed by volume of one part of Portland cement and one and one-half parts of sand. Said catch basins shall rest on a solid bottom of two-inch pine planks laid closely in single thickness and securely spiked to two pine stringers, or cross planks, two inches thick by six inxhes wide. The bottom shall _be made circular in form, and shall measure sixty inches in diameter. Said catch basins shall be six and one-half feet deep measured from the top of the plank bottom aforesaid to the top of the iron covers hereinafter specified to be furnished and set. The upper surface of which covers shall be placed at the elevation of the ad ja- cent ground. Said catch basins shall be connected with the sewer aforesaid by means of vitrified, salt glazed, tile pipes having an internal diameter of nine (9) inches. The pipes shall be of the type and quality, and the joints shall be sealed in the manner herein - before specified for tile pipe sewers. Each catch basin connection shall start in a nine inch Y-branch, which shall be set in the afore- said sewer at a point not less than six feet in advance of the catch basin, measured along and in the downstream direction of the sewer from a point on said sewer directly opposite the catch basin. The pipes shall be laid true to line and grade, and the connections shall enter the catch basin at a point two and one-half (2*) feet above its bottom. The pipe entering the catch basin through the brick walls thereof shall be an elbow with the socket end turned downward inside of the catch basin to form a trap. Said catch basins shall each be equipped with a cast iron cover weighing not less than one hundred eighty (180) pounds which cover shall be of the same size and patter or equal size, quality and workmanship to the cast iron covers now in use on existing catch basins in Hinman Avenue between University Place and Lee Street in said City of Evanston. Said catch basin covers herein provided to be furnished and set shall rest on the Yells of said catch basins herein specified to be constructed, which walls shall be built to such height as will bring the top of the covers, when set in place, to the elevations herein specified therefor. Said catch basins shall be located at necessary points along said sewers along the gutter lines of the roadway thereof. 1119198 331 An inlet nine (9) inches in diameter shall be made in the side of each catch basin in such manner as to receive the water from the ditches. Said inlet shall be provided with a suitable iron grating placed in such manner as to prevent miscellaneous rubbish from entering the catch basin through said inlet. Said grating to consist of two (2) one- jalf inch round iron bars placed vertically, the ends of which bars shall be firmly embedded in the walls of said catch basin in such manner as to divide said inlet into three equal parts, For the purpose of making the improvement aforesaid, the following described territory within the said City of Evanston, is hereby created into and declared to be a drainage district, to -wit: Lots ten (10) to eighteen (18) (both inclusive) in Block five 5 and lots one (1) to nine (9) (both inclusive) in Block four t4; in Fowler and McDm iel's Subdivision of the southwest one -quarter #) of the southwest one -quarter (f) of Section thirteen (13), Township forty-one (41) North, Range thirteen(13) East of the third (3rd) Principal Meridian. The owners and occupants of the lots, pieces, and parcels of land lying within said drainage district hereinbefore de- scribed shall at all times hereafter be entitled to the use and benefit of the sewers provided by this ordinance. Right, Permission, privilege and authority are hereby given and granted to the present and future owners and` occupants of the lands lying within said above named drainage limits to open and connect all ditches, drains and sewers which now exist and may be here- after constructed within said district, into and with the said sewers hereinbefore in this ordinance specified. All the material used in the construction of the impriovement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of one hundred eleven and thirty hundredths dollars ($111.30 ) being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of one hundred eleven and thirty hundredths dollars ($ 111.30 ) shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into five installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of w said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the 'Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court • of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of theCity of Evanston on the 6th day of Feb. A.D. 1923. Approved: Feb. 7, 1923, John F. Hahn, H.P. Pearsons, City Clerk. Mayor. 332 RECOMMENDATION, ESTIMATE AND ORDINANCE RECOIMEITDATION BY BOARD OF LOCAL IIETROVEMENTS To the Mayor and Aldermen of theCity of Evanston in the City Council Assembled: We herewith submit an ordinance providing that a six (6) inch internal diameter, cast iron water main together with necessary fire hydrant, valves and valve chambers be laid in FOWLER AVENUE from and connecting with the cast iron water main now in place in LAKE STREET at a point ten (10) feet north of the center line ,thereof, to the north line of GtLr,.ziiwO0D STREET; together with an estimate of the cost of said improvement and rec mmend the passage of said ordinance and themaking of the improvement contemplated therein. Respectfully submitted, H.P. Pearsons, Via. Blanchard, Hal w. Smith. Board of Local Improvements of the City of Evanston, Illinois Dated, Evanston, Illinois, February 6, 1923. ESTIMATE OF ENGINBLR OF BOARD OF LOCAL IMPROVEMENTS To the Mayor and Aldermen of the City of Evanston in City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that a six (6) inch internal diameter, cast iron water main together with necessary fire hydrant, valves and valve chambers be laid in FOWLER AVENUE from and connecting with the cast iron water main now in place in LAKE STREET at a point ten (10) feet north of the center line thereof, to the north line of GREENWOOD STREET; and presented to the City Council of the City of Evanston a recommendation that said improvement be made, I here- with submit an estimate of the cost of said improvement, an de- scribed in said resolution, including labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment, as provided by lair, viz: ESTIMATE OF COST 530 Lin* ft. of six (6) inch internal diameter, cast iron water main (average depth of cut six (6) feet) laid complete in place including trenching and back filling ® $2.65 per line ft. . . . . . . . . $ 1,404.50 1 Fire hydrant including necessary connections to water main, gate valve and cast iron Va3.ve box also including excavation and back filling complete in place . . . . . . . . 150.00 2 Six (6) inch valves including brick valve chambers, cast iron covers, excavation and back filling complete in place ® V100.00 each . . . . . . e 200.00 For lawful expenses attending the proceedings for making said improvement and the cost of making and collect- ing the assessment therefor, not to exceed six (6) per centum of the above, to-wit:-$1,754.50 105.27 Total . . . * 10859.77 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improve- ment and the lawful expenses attending the same. Wm. Blanchard, Engineer of the Board of Local Im- provements of the City of Evanston. Dated, Evanston, Illinois February 6, 1923w algi98 AN ORDINANCE 333 Providing that a six (6) inch internal diameter, cast iron water main together with necessary fire hydrant, valves and valve chambers be laid in FOWLER AVENUE from and connecting with the cast iron water main now in place in LAKE STREET at a point ten (10) feet north of the -center line thereof, to the north line of GREENWOOD STREET. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvement shall be m de within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local improvement is as follows, to -wit: a six (6) inch internal diameter, cast iron water main together with necessary fire hydrant, valves and valve chambers shall be laid in FOWLER AVENUE from and connecting with the cast iron water main now in place in LAKE STREET at a point ten (10) beet north of the center line thereof, to the north line of GREENWOOD STREET. F=10u'J�I" M The cast iron water main herein provided to be laid in Fowler Avenue shall follow a line eight (8) feet east of and parallel with the center line of Fowler Avenue. This cast iron water main shall connect with the cast iron water main now in place in Lake Street. SIZES The inside diameter of the cast iron water main herein provided to be laid in Fowler Avenue shall be six (6) inches. GRADE The grade of elevation of the top of the cast iron water main herein provided to be laid, when complete in place, is hereby established as follows, measured in feet and decimal parts of a foot above the datum plane of said City of Evanston, to -wit: Cast iron Water Main in Fowler Avenue: At a point ten (101 feet north of the center line of Lake Street. 10.18 At the north line of Greenwood Street 10418 The grade of the top of the main at intermediate points shall be respectively proportional to the foregoing. DATUM PLANE The datum plane hereinbefore mentioned is the plane of low water mark of Lake Michigan in the year A. D. 1847 as established by the Trustees of Illinois and Michigan Canal, and is 22.41 feet below the U. S. Geo- logical Survey Bench Mark on the north side of the Sherman Avenue entrance to building known as City Hall, located at the north-west corner of Davis Street and Sherman Avenue, in said City of Evanston. EXCAVATION AND BACK FILLING The ground shall be excavated in open trenches. The trenches shall be at least eighteen inches wider than the exterior diameter of the pipes so as to give at least nine inches clearance on both sides of the pipes for caulking the joints and setting special fittings. Excavations shall be made under the bell of each pipe so that the entire length of the pipe shall rest upon the bottom of the trench and be at the grade hereinbefore specified. The materials excavated shall be kept compact so as to occasion the least possible inconvenience to the public use of the street. The trenches shall be promptly back -filled to a depth of twelve inches above the top of the pipes. Sand or other suitable earth shall be carefully packed under and around the pipes. In no case from the commencement to the termination of the work, shall more than five hundred feet of trench be opened in ad- vance of the completed back -filling. Any and all pavements or crosswalks disturbed in the performance of the work shall be restored to a condition as safe and serviceable as before being disturbed. Free access shall be left to all fire hydrants and water gates. Provision shall be made for the flow of sewers, drains, or water courses disturbed during the prog- ress of the work. PIPES The pipes used in constructing the water main herein provided to be laid shall be coated bell and spigot, made in twelve -foot lengths, straight, cylindrical, smooth, free from cracks, sand holes and other imperfections of castings. The metal shall be of the best quality of cast iron used for the purpose and shall be uniform in thick- ness. 334 The dimensions, thickness of metal and weight of the pipes and special fittings hereinafter specified shall be sufficient to insure the pipes and joints being capable of securely withstanding an internal hydraulic pressure of one hundred and fifty pounds per square inch. The spigots shall be concentrically placed inside the bells. All joints between the pipes, and fittings used in connection with the improvement herein provided to be made shall be closely fitted and thoroughly caulked. Said caulking shall consist of the best quality, for the purpose, of untarred rope yarn and soft caulking lead. Sufficient yarn shall be used to leave a depth of not less than two and one -quarter inches for lead in the bell after the yarn has been, as it shall be, well packed. After the yarn has been packed, as specified, molten lead shall be promptly poured into the remaining bell space in sufficient quantity to stand flush with the outside of the bell after the lead has been, as it shall be, thoroughly compacted with caulking hammer and tools. Before pouring the lead the joints shall be carefully wiped out to make them clean and dry. The lead space shall be run full at one pouring. FIRE HYDRANTtj A Fire hydrant4 shall be furnished and set at the point&hereinafter specified and shall be connected, in the bast workmanlike manner, with the water main, herein provided to be laid, by means of six-inch cast iron pipes and fittings of the quality hereinbefore specified. Said hydrant* shall be of the same pattern, or equal in quality and workmanship to, the cast iron body, bronze mounted, rubber faced gate type of fire hydrants in use on Lake Street between Dodge Avenue and Hartray Avenue in said City of Evanston. Said hydrantirberein provided to be furnished and set shall open by turning to the left, and shall be provided with one four -inch steamer nozzle and two, two and one-half inch hose nozzles, matching threads of the Fire Department of said City, and shall have, at or near the foot of said bydranto, a secondary double gate valve equipped with a cast iron valve box. Said secondary valve shall be of the same pattern, or equal in quality and workmagbe to the secondary valves on the existing fire hydrants aforesaid. Said cast iron valve boxeg shall be,,�,t,feet in length and five inches in internal diameter, and shall be of the same pattern, or equal in quality and workmanship to, the adjustable cast iron valve boxes now in use on the existing fire hydrants aforesaid. six The length of the hydrant% herein provided to be furnished and set shall be feet from ground line to bottom of connecting pipe. The diameter of the seat ring or main valve opening of said hydrants shall be not less than four inches. The inside diameter of the stand pipe, or hydrant barrel, shall be not less than five and three-fourtbs inches. The hydrant4herein provided to be furnished and set shall be placed at the following point#, to -wit: On a line sixteen (16) feet east of the center line of Fowler Avenue: At a point ten (10) feet north of the north line of Greenwood Street. VALVES AND VALVE CHAMBERS. The water main herein provided to be laid shall be equipped with valves and valve chambers complete to be located at the points hereinafter specified. Said valves shall be of the same pattern, or equal in quality and workmanship to, the cast iron body, bronze mounted, double gate valves now in use on the water main and within the existing valve chambers in Lake Street, from Dodge Avenue to Hartray Avenue, in said City of Evanston. Said vales shall open to the left and shall be set on and connected with the water main herein provided to be laid and within brick valve chambers to be constructed as follows: ' Said valve chambers shall be cylindrical in shape, having an internal diameter of the dimensions herein- after set forth, at the bottom and upward to the lowest header course, being drawn in at the top of the ma- sonry by means of twelve header courses laid endwise and horizontally, the diameter being decreased uniform- ly by each course, to twenty-four inches to fit the iron covers below specified. Said valve chambers shall have walls eight inches thick built of two courses of hard burned sewer brick placed, except as above specified for header urs as, edgewise and in perpendicular courses and laid in mortar composed by volume of one part of ��cernent of the best quality and one and one-half parts of clean, coarse, sharp grained sand, containing no particles larger than would pass through a sieve of one -eighth inch mesh. The walls of said valve chambers shall start nine inches below the bottom of the water main. The joints in the brick work shall be neatly pointed. f ive Said vf�62-t nibers shall each be equipped and fitted with a cast iron cover weighing not less than M= hundred jCdfiExkx pounds, which cover shall be of the same pattern, or equal in quality and workmanship to 'the cast iron valve chamber covers now in use on existing valve chambers in Lake Street, from Dodge Avenue J:to Hartrav Avenue, in said Citv of Evanston. Said vale chamber covers herein specified to be furnished and �et shall rest upon the walls of said vale chambers herein provided to be constructed, which walls shall be built 4o such height as will bring the top of the covers, when set in place, three inches below the surface of the street. The location of the valve chambers herein provided to be constructed, referring to the vertical axis thereof; the size, or inside diameter of the seat ring, of the valves herein specified to be furnished and set, measured in inches ; and the inside diameter of the last above mentioned vale chambers, measured in feet and decimal Fparts of a foot, at the bottom and upward to the lowest header course shall be as "follows, to -wit: Location of Vales and Valve Chambers. Size of Diameter of Valves. Vale Chambers. On a line eight (8) feet east of the center line of Fowler Avenue: One at a point five (51 feet south of the south line of Lake Street 6" 4 fto One at a point five (5) feet north of the north line of Greenwood St.. 6" 4 fto 335 All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of one hundred five and twenty—seven hundredths dollars ($105.27 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of one hundred five and twenty—seven hundredths dollars ($ 105.27 ) shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall he divided into f ive installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section S. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum pe r. annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 6th day of Feb. A.D. 1923. Approved Feb. 70 1923, John F. Hahn, N.P. Pearsons, City Clerk Mayor . 336 RECGMDdENDATION, ESTIMATE AND ORDINANCE REC0122NDATION BY BOARD OF LOCAL IMPROVEIENTS To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: We herewith submit an ordinance providing that a six (6 ) inch cast iron water main together with necessary fire hydrants, valves, valve chambers and special fittings, be laid in HOWARD STREET, from and connecting with the cast iron water main now in place in CUSTER AVENUE, to and connecting with the cast iron water main now in place in RIDGE AVENUE, in the City of Evanston, County of Cook, State of Illinois; together with an estimate of the cost of said improvement and recommend the passage of said ordinance and the malting of the improvement contemplated therein. Respectfully submitted, H.P. Pearsons, Vm. Blanchard, Hal w. Smith. Board of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, Illinois. February 6, 1923. ESTIMATE OF ENGINEER'OF BOARD OF LOCAL IMPROVEMENTS To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that a six (6) inch cast iron water main together with necessary fire hydrants, valves, valve chambers and special fittings, be laid in HOWARD STREET, fran and connecting with the cast iron water main now in place in CUSTER AVENUE, to and connecting with the cast iron water main now in place in RIDGE AVENUE, in the City of Evanston, County of Cook, State of Illinois; and presented to the City Council of the City of Evanston a recommendation that said improvement be made, I herewith submit an estimate of the cost of said improvement as described in said resolution, including labor material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment, as provided by law, viz: ESTIMTE OF COST 1300 Lin, ft. of 6" cast iron water main (average depth of cut six (6) feet) laid complete in place ® $2.70 per lino ft. . . . . . . #3, 510.00 2 Six inch valves including brick chambers, excavation and back filling complete in place ® $100.00 each 200.00 4 Fire hydrants including connection to water main, excavation and back filling, complete in place ® $125#00 each . . . . 500.00 1000 lbs. of special fittings complete in place ® 10je per lb. 100.00 For lawful expenses attending the proceedings for making said improvement and the cost of making and colleetin the assessment therefor, not to exceed six (61 per centum of the above, to -wit: $40310.00 . . . . . 258.60 Total . . . # 40 568.60 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improvement and the lawful expenses attending the same. Wm. Blanchard, Engineer of the Board of Local Im- provements of the City of Evanston. Dated, Evanston, Illinois. February b, 1923. IZ0198 AN O RD INANCE 33"7 Providing that a six (6) inch cast iron water main together with necessary fire hydrants, valves, valve chambers and special fittings, be laid in HOWARD STREET, from and connectiong with the cast iron water main now in place in CUSTER AVENUE, to and con- necting with the cast iron water main now in place in RIDGE AVENUE, in the City of Evanston, County of Cook, State of Illinois. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVMTON: SECTION 1. That a local improvement shall be made within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local im- provement is as follows, to -wit: a six (6) inch cast iron water main together with necessary fire hydrants, va ves, valve chambers and special fittings shall be laid in HOWARD STREET, from and connecting with the cast iron water main now in place in CUSTER AVENUE, to and connecting with the cast iron water main now in place in RIDGE AVENUE; in the City of Evanston, County of Cook, State of Illinois. ►17— _y The cast iron water main herein provided to be laid in Howard Street shall follow a line thirty-one (31) feet south of the north line of Howard Street. This cast iron water main shall connect with the cast iron water mains now in place in Custer Avenue and Ridge Avenue. SIZES The inside diameter of the cast iron water main herein provided to be laid in Howard Street shall be six (6) inches. • The grade or elevation of the top of the cast iron water main herein provided to be laid, when complete in place, is hereby established as follows, measured in feet and decimal tarts of a foot above the datum plane of said City of Evanston, to -Wit: Cast iron water main in Howard Street: At the west lot line of Custer Avenue 14#60 At the center line of Elmwood Avenue 19.60 At a point two hundred fifty (250) feet west of the center line of Elmwood Avenue 23.20 At the east lot line of Ridge Avenue 31.70 The grade of the top of the main at intermediate points shall be respectively proportional to the foregoing. DATUM PLANE The datum plane hereinbefore mentioned is the plane of low water mark of Lake Michigan in the year A. D. 1847 as established by the Trustees of Illinois and Michigan Canal, and is 22.41 feet below the U. S. Geo- logical Survey Bench :Bark on the north side of the Sherman Avenue entrance to building known as City Hall, located at the north-west corner of Davis Street and Sherman Avenue, in said City of Evanston. EXCAVATION AND BACK FILLING The ground shall be excavated in open trenches. The trenches shall be at least eighteen inches wider than the exterior diameter of the pipes so as to give at least nine inches clearance on both sides of the pipes for caulking the joints and setting special fittings. Excavations shall be made under the bell of each pipe so that the entire length of the pipe shall rest upon the bottom of the trench and be at _the grade hereinbefore specified. The materials excavated shall be kept compact so as to occasion the least possible inconvenience to the public use of the street. The trenches shall be promptly back -filled to a depth of twelve inches above the top of the pipes. Sand or other suitable earth shall be carefully packed under and around the pipes. In no case from the commencement to the termination of the work, shall more than five hundred feet of trench be opened in ad- vance of the completed back -filling. Any and all pavements or crosswalks disturbed in the performance of the work shall be restored to a condition as safe and serviceable as before being disturbed. Free access shall be left to all fire hydrants and water gates. Provision shall be made for the flow of sewers, drains, or water courses disturbed during the prog- ress of the work. PIPES The pipes used in constructing the water main herein provided to be laid shall be coated bell and spigot, made in twelve -foot lengths, straight, cylindrical, smooth, free from cracks, sand holes and other imperfections of castings. The metal shall be of the best quality of cast iron used for the purpose and shall be uniform in thick- ness. i i s, i3i lx1 agll'-.tt" glit of: thiw PJPFtii, _n einazxer fled sIMaT be sufHcien ;; a ,insure the 1� � ii jwiits, being- capable of securefy SvYtlrsl�'afiding �.Interna, hydraulic pressure of one hundred` and fifty pounds per square inch. The spigots shall' be concentrically placed inside the bells. All joints between the pipes, and fittings used in connection with the improvement herein provided -to be made shall be closely fitted and thoroughly caulked. Said caulking shall consist of the best quality, for the purpose, of untarred rope yarn and soft caulking lead. Sufficient yarn shall be used to leave a depth of not less -than two and one -quarter inches for lead in the bell after the yarn has been, as it shall be, well packed. After the yarn has been packed, as specified, molten lead shall be promptly poured into the remaining bell space ih sufficient quantity to stand flush with the outside of the bell after the lead has been, as it shall be, thoroughly compacted with caulking hammer and tools. Before pouring the lead the joints shall be carefully wiped out to make them clean and dry. The lead space shall be run full at one pouring. FIRE HYDRANTS. Fire hydrants shall be furnished and set at the points hereinafter specified and shall be connected, in the bast workmanlike manner, with the water main, herein provided to be laid, by means of six-inch cast iron pipes and fittings of the quality bereinbefore specified. Said hydrants shall be of the same pattern, or equal in quality and workmanship to, the cast iron body, bronze mounted, rubber faced gate type of fire hydrants in use on Lake Street between Dodge Avenue and Hartray Avenue in said City of Evanston. Said hydrants herein provided to be furnished and set shall open by turning to the left, and shall be provided with one four -inch steamer nozzle and two, two and one-half inch hose nozzles, matching threads of the Fire Department of said City, and shall have, at or near the foot of said hydrants, a secondary double gate valve equipped with a cast iron valve box. Said secondary valve shall be of the same pattern, or equal in duality and worknlj j p gt e secondary valves on the existing fire hydrants aforesaid. Said cast iron valve boxes shall be feet in length and five inches in internal diameter, and shall be of the same pattern, or equal in quality and workmanship to, the adjustable cast iron valve boxes now in use on the existing fire hydrants aforesaid. S 6 ) The length of the hydrants herein provided to be furnished and set shall be c]E feet from ground line to bottom of connecting pipe. The diameter of the seat ring or main valve opening of said hydrants shall be not less than four inches. The inside diameter of the stand pipe, or hydrant barrel, shall be not less than five and three -fourths inches. The hydrants herein provided to be furnished and set shall be placed at the following points, to -wit: On a line twenty-one (21) feet south of the north line of Howard Street: One at a point five (5) feet west of the west line of Custer Avenue. One at a point two hundred eighty-seven (287) feet west of the west line of Custer Avenue. One at a point five (5) feet west of the west line of Elmwood Avenue . • One at a point five (5) feet east of the east line of Ridge Avenue. VALVES AND VALVE CHAMBERS. The water main herein provided to be laid shall be equipped �vith valves and valve chambers complete to be located at the points hereinafter specified. Said valves shall be of the same pattern, or equal in quality and workmanship to, the cast iron body, bronze mounted, doable gate valves now in use on the water main and within the existing valve chambers in Lake Street, from Dodge Avenue to Hartray Avenue, in said City of Evanston. Said valves shall open to the left and shall be set on and connected with the water main herein provided to be laid and within brick valve chambers to be constructed as follows: — Said vale chambers shall be cylindrical in shape, having an internal diameter of the dimensions herein- after set forth, at the bottom and upward to the lowest header course, being drawn in at the top of the ma- sonry by means of twelve header courses laid endwise and horizontally, the diameter being decreased uniform- ly by each course, to twenty-four inches to fit the iron covers below specified. Said vale chambers shall have walls eight inches thick built of two courses of hard burned sewer brick placed, except as above specified for ftft3yWn&es, edgewise and in perpendicular courses and laid in mortar composed by volume of one part of,�,�,"LL,, cement of the best quality and one and one-half parts of clean, coarse, sharp grained sand, containing no particles larger than would pass through a sieve of one -eighth inch mesh. The walls of said valve chambers shall start nine inches below the bottom of the water main. The joints in the brick work shall be neatly pointed. f ive Said vbj.*tubers shall each be equipped and fitted with a cast iron cover weighing not less than hundred pounds, which cover shall be of the same pattern, or equal in quality and workmanship to the cast iron vale chamber covers now in use on existing vale chambers in Lake Street, from Dodge Avenue to Hartray Avenue, in said City of Evanston. Said valve chamber covers herein specified to be furnished and set shall rest upon the walls of said vale chambers herein provided to be constructed, which walls shall be built to such height as -,vill bring the top of the covers, when set in place, three inches below the surface of the street. The location of the vale chambers herein provided to be constructed, referring to the vertical axis thereof; the size, or inside diameter of the seat ring, of the valves herein specified to be furnished and set, measured in inches; and the inside diameter of the last above mentioned valve chambers, measured in feet and decimal parts of a foot, at the bottom and upward to the lowest header course shall be as follows, to -wit: Location of \Tal-es and Valve Chambers. Size of Diameter of On a line thirty-one (31) feet south Valves. Vale Chambers. of the north line of.Howard*Street: One at a point ten (10) feet west of the west line of Custer Avenue 6" 4 ft, One at a point ten (10) feet east of the east line: of. Ridge, Avenue 6" 4. f•to 1Z 19198 SPECIAL FITTINGS. 339 The water main herein provided to be laid shall be equipped with cast iron special fittings of the quality hereinbefore specified; The unconnected or open ends of all pipes and special fittings required on the improvement herein provided to be made shall be closed with cast iron plugs of the quality hereinbefore specified. Any and all crosses or tees required on said improvement shall have bell ends. Location of Special Fittings, Size Class On a line thirty-one (31) feet south of thenorth line of Howard Street: At a point five (5) feet west of the west line of Custer Avenue 6"x 6"x 6" Tee At a point two hundred eighty-seven (287) feet west of the west line of Custer Avenue 6"x 6"x 6" Tee At a point eight (8) feet east of the center line of Elmwood Avenue 6"x 6"x 6" Tee It a point five (5) feet west of the west line of Elmwood Avenue 6"x 6"x 6" Tee At a point five (6) feet east of the east line of Ridge Avenue 6"x 6"x .6" Tee All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of two hundred fifty-eight and sixt_* hundredths dollars ($ 258.60 )� being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of two hundred fifty-eight and sixty -hundredths dollars ($ 258.60 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into five installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of a said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the '.\7avor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Cleric under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance �vith and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel he and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 6th day if Feb. A.D. 1923. Approved: Feb. 7, 1923. John F. Hahn, H.P. Pearsons, City Clerk Mayor. 340 RECOMMENDATION, ESTIMATE AND ORDINANCE RECOWUNDATION BY BOARD OF LOCAL IMPROVEMENTS To the Mayor and Aldermen of the City of Evanston in t#e City Council Assembled: We herewith submit an ordinance providing that a combined storm water and house drainage sewer, made of vitrified, salt g]a zed, tile pipe, together with necessary brick catch basins and brick manholes be constructed in HOWARD STREET, from and connecting with the sewer now in place in CUSTER AVENUE to a point twenty-eight (28) feet east of RIDGE AVENUE, in the City of Evanston, County of Cook, State of Illinois; together with an estimate of the cost of said improvement and recommend the passage of said ordinance and the making of the improvement contemplated therein. Respectfully submitted, H.P. Pearsons, Wm. Blanchard, Hal W.. Smith . Board of Local Improvementsof the City of Evanston, Illinois. Dated, Evanston, Illinois, February 6, 1923. ESTIMATE OF ENGINM OF BOARD OF LOCAL IMPR OV MENTS . To the Mayor and Aldermen of the City of Evanston in City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that a combined storm water and house drainage sewer, made of vitrified, salt glazed, tile Pipe, together with necessary brick catch basins and brick manholes be construct4d in HOWARD STREET, from and connecting with the sewer now in place in CUSTER AVENUE to a point twenty-eight (28) feet east of RIDGE AVENUE, in the City of Evanston, County of Cook, State of Illinois; and presented to the City Council of the City of Evanston a recom- mendation that such improvement be made, I herewith submit an estimate of the cost of said improvement as described in said resolution, including labor, material and lawful exoenses attending the proceedings for making said improvement and the cost of making and collecting the assessment, asprovided by law, viz: ESTIMATE OF COST 750 Lino fto of twelve -inch internal diameter vitrified salt glazed, tile pipe sewer laid complete in place including trenching and back filling (average depth of out nine and one-half (9t) feet) $2.80 per line fte . . . . . . . . . . $ 2#100000 525 Line fte of nine -inch internal diameter, vitrified salt, glazed, tile pipe sewer laid complete in lace including trenching and back filling average depth of out nine (9) feet ) 41 $2.50 per line ft. . . . . . . . . . . . 10312950 5 brick manholes including cast iron covers, excavation and back filling complete in place ® $85.00 each . . . . . . . . . . . . 425.00 4 brick catch basins including cast iron covers, connections to sewer, plank bottoms, excava- tion and back filling complete in place 6 $85.00 each . . . 340.00 For lawful expenses attending the proceedings for making said improvement and the cost of making and colleetin the assessment therefor, not to exceed six (61 per centum of the above, to -wit: $4,177.50 . . . . 250.65 Total $ 49 428.15 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improve- ment and the lawful expenses attending the same. 1h. Blanchard, Dated: Evanston, Ills. Engineer of theBoard of Local Im- February 6, 1923., provements of theCity of Evanston* iZ 019 8 AN CRD 31TANCE 341 Providing that a combined storm water and house drainage sewer, made of votrified, salt glazed, tile pipe, together with necessary brick catch basins and brick manholes be constructed in HOWARD STREET, from and connecting with the sewer now in place in CUSTER AVENUE to a point twenty-eight (28) feet east of RIDGE AVENUU, in the City of Evanston, County of Cook, State of Illinois. HE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local imppovement shall be made within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of vdiich local im- provement is as follows, to -wit: That a combined . storm water and house drainage sewer made of vitrified, -salt lazed, tile ,pipe shall be constructed in and along a line forty 140) feet south of and parallel to the north line of Howard Street, from and connecting with the sewer now in place in Custer Avenue to a point twenty-eight (28) feet east of the east line of Ridge Avenue. The internal diameter of said sewer shall be twelve (12) inches from the sewer now in place in Custer Avenue to the center line of Elmwood Avenue. The internal diameter of this sewer shall be nine (9) inches from the center line of Elmwood Avenue to a.point twenty-eight (28) feet east of the east line of Ridge Avenue. Said sewer shall connect with the sewer now in place in Custer Avenue. At its connection with the aforesaid sewer in Custer Avenue, the elevation of the inside bottom of the sewer herein provided to be laid shall be twelve (12) feet above the datum plane hereinbefore defined and shall rise thence at a uniform rate to an elevation of sixteen and six tenths (16.6) feet above said datum at the center line of Elmwood Avenue and shall rise thence at a uniform rate to an elevation of twenty (20) feet above said datum at a point two hundred fifty (250 ) feet west of the center line of Elmwood Avenue qnd shall rise thence at a uniform rate to an elevation of twenty-eight (28) feet above said datum at a point twenty-eight (28) feet east of Ridge Avenue. DATUM FLAK The datum plane hereinbefore mentioned is the plane of lop water mark of Lake Michigan in the year, A. D. 1847 as established by the Trustees of Illinois and Michigan Canal, and is twenty-two and forty-one hundredths (22.41) feet below the U.S. Geological Survey Bench ]lark on the north side of the Sherman Avenue entrance to building known as City Hall, located at the northwest corner of Davis Street and Sherman Avenue in said City -of Evanston. EXCAVATION AND BACK FILLING The ground shall b6 excavated in open trenches. The trenches shall be at least twelve inches wider than'the exterior diameter of the pipes so as to give at least six inxhes clearance on both sides of the pipes for sealing the joints and setting and closing Y-branches. The materials excavated shall be kept compact and shall be backf illed as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the street. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. The soil shall be carefully packed under and around the pipes. In no case from the o a=encement to the termination of the work shall more than five hundred feet of trench be opened in advance of the completed backfilling. Any and all pavements or crosswalks disturbed in the performance of the work shall be restored to a condition as safe and serviceable as before being disturbed. Yree access shall be left to all fire hydrants and water gates. Provision shall be made for the flow of sewers, drains or water courses disturbed during the progress of the work* BRICK All brick used in the improvement herein provided to be made shall be hard burned sewer brick of the best quality. The brick shall be moistened shortly before being laid in the work. 1TI-1`i1T� - All cement used in the improvement herein provided to be made shall be Portland cement of the best quality. The cement 342 shall be carefully protected from moisture, freshly mixed for the work in hand, and shall be used before initial setting has occured. SAND All sand used for mortar in the improvement herein provided to : be made shall be clean, coarse and sharp grained; containing no particles larger than would pass through a sieve of one- ei glth inch mesh. PIPES Socket pipes, cylindrical, smooth, straight, thoroughly vitrified, well galzed, sound, and in all respects of the best quality and workmanship for the purpose, shall be used in build- ing the sewer herein provided to be constructed.. The pipes shall give a clear sharp ring when struck with a mason's hammer. The pipes shall be not less than two feet in length* The joints between the pipes shall be securely sealed with the same quality of mortar herein specified for manholes and catch c asins. The joints shall be wiped and pointed inside the pipes.. The interior of the pipes shall be kept free from dirt or refuse of every description as the work progresses, and shall be left clean at the completion of the work. The.six-inch Y-branch, or house connection slant, shall be placed in the sewer, herein provided to be constructed, in front of and for the use of, each and every lot of subdivided land having a direct frontage of thirty feet or less on the line of said improvement; and in addition thereto one such Y-branch shall be placed in said sewer in front of and .for the use of each and every thirty feet of frontage of each and every lot of subdivided land having a greater direct frontage than thirty feet on the line of said improvement. Any and all property subdivided into lots in such manner as toto side on the line of said improvement shall have one such Y-branch placed in said sewer opposite and for the use of each and every thirty feet of such siding, except the front seventy- five feet thereof. Unsubdivided .tracts abutting on the line of said improvement shall have one such Y-branch placed in said sewer opposite and for the uae .of each and every thirty -feet of such tract so abutting. Y'he openings in Y-branches shall be closed with standard vitrified, tile discs, sealed with cement mortar as specified for joints between pipes. MANHOLES Five brick manholes shall be built of hard burned sewer brick, upon the sever or sewers, as the case may be, hereinbefore provided to be constructed and shall be located at the points hereinafter specified. Said manholes shall be placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbef ore specified in such manner as to bring the tops of the iron covers herein required for said manholes when in place to the upper surface of the proposed pavement. Said manholes shall be cylindrical in shape having an internal diameter of thirty- six (36) inches at the upper surface of the base and upward to the lowest header course being uniformly drawn in to twenty-four (24) inches in diameter at the top of the masonry by means of six (6) header courses of brick laid end- wise and horizontally, the diameter being decreased uniformly by each course to fit the iron covers hereinafter specified to be furnished and set on the walls of said manholes. The walls of said manholes shall rest upon the base thereof without offsetting and shall be eight (8) inches thick, built (except as above specified for header courses) of alter- nate vertical and horizontal courses of brick. The brick used in the construction of said manholes shall be thoroughly wetted with water before being placed and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1,1Q parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manholes shall begin at a point five (5) inches below the outside bottom of the sewer hereinbefore specified and shall extend upward to said outside bottom and along the sides of said sewer to a point midway between the top and bottom of said sewer, said base to be circular in form, the diameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manholes shall be neatly removed leaving the lower half thereof to form the invert of the manhole. 1,119198- 343 Said manholes shall each be equipped with a circular castiron cover having a tight lid, weighing not less than five hundred and forty (W) pounds, of the type known as "Chicago City Standard Heavy" having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two (22) and three - fourths (�4) inches at the top thereof. Said manhole covers herein specified to be furnished and set, shall be imbedded, in mortar of the kind and quality hereinbefore specified and shall rest on the tops of the walls of said manholes, which walls shall be built to such height as will bring the tops of the covers when set in place, to the surface of the pavement hereinbefore specified. Said manholes herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: In Howard Street: One at the west line of Custer Avenue. One at three hundred (300) feet west of the west line of Custer Avenue. One at the center line of Elmwood Avenue. One at a point two hundred ten (210) feetw.est of the west line of Elmwood Avenue. One at a point twenty-eight (28) feet east of the east line of Ridge Avenue. CATCH BASINS Four brick c atch b asins shall be built and connected with .the sewers herein provided to be constructed at the necessary points along said sewers. Said catch b asins shall be constructed in the manner below specified. Said catch basins shall be cylindrical in shape, having an internal diameter of forty-two inches at the bottom and upward to the lowest header course, being drawn in at the top of the masonry by means of twelve header courses laid endwise and horizontally. The diameter shall be decreased uniformly by each header course to fit the iron covers hereinafter specified to be placed on said catch basins. Said catch basins shall have walls eight inches thick, built, except as above specified, of two courses of brick placed edgewise, in perpendicular courses. The brick used in the con- struction of said catch basins shall be hard burned sewer brick and shall be laid in mortar composed by volume of one part of Portland cement and one and one-half parts of sand. Said catch basins shall rest on a solid bottom of two-inch planks laid closely in single thickness and securely spiked to pine stringers, or cross planks, two inches thick by six inches wide. The bottom shall be made circular in form, and shall measure sixty inches in diameter. Said catch basins shall be six and one-half feet deep measured from the top of the plank bottom aforesaid to the top of the iron covers hereinafter specified to be furnished and set. The upper surface of Mich covers shall be placed at the elevation of the adjacent ground. Said catch basins shall be connected with the sewer aforesaid by means of vitrified, salt glazed, tile pipes having an internal diameter of nine inches. The pipes shall be of the type and quality, and the joints shall be sealed in the manner hereinbefore specified for tile pipe sewers. Each catch b asin connection shall start in a nine inch 1-branch, which shall be set in the aforesaid sewer at a point not less than six feet in advance of the catch basin, measured along and in the downstream direction of the sewer from a point on said sewer directly opposite the catch basin. The pipes shall be laid true to line and grade, and the connection shall enter the catch basin at a point two and one-half feet above its bottom. The pipe entering the catch basin through the brick walls thereof shall be an elbow with the socket end turned downward inside of the catch basin to form a trap. Said catch basins shall each be equipped with a cast iron cover weighing not less than one hundred eighty pounds,w hich cover shall be of the same size and pattern or equal in size, quality and workmanship to the cast iron covers now in use on existing catch basins in Hinman Avenue between University Place and Lee Street in said City of Evanston. Said catch basin covers herein provided to be furnished and set shall rest on the walls of said catch basins herein specified to be constructed, which w alls shall be built to such height as will b ring the top of the covers, when set in place, to the elevations herein specified therefor. Said catch asins shall be located at necessary points along said sewers along the gutter lines of the roadway thereof. An inlet nine (9) inches in diameter shall be 344 made in the side of each catch basin in such manner as to receive the water from.the ditches. Said inlet shall be provided with a suitable iron grating placed in such manner as to prevent miscellaneous rubbish from entering the catch basin through said inlet. Said grating to consist of two (2) one-half (*) inch round iron bars placed vertically, the ends of which bars shall be fimly embedded in the walls of said catch basin in such manner as to divide said inlet into three (3) equal parts. For the purpose of making the improvement aforesaid, the following described territory within the said City of Evanston is hereby created into and declared to be A drainage district, to -wit: Lots fifteen (15) to thirty-one (31) (both inclusive) in Block seven (7) and lots nineteen (19) to forty-one (41) (both inclusive) in Block eight (8) in Brummel and Case's Howard Terminal Addition to Evanston in the northwest one -quarter (-J) of Section thirty (30), Township forty-one (41) Nbrth, Range fourteen (14) East of the third (3rd) Principal. Meridians The owners and occupants of the lots, pieces and. parcels of land lying within s aid drainage district hereinbefore described shall at all times hereafter be entitled to the use and benefit of the seders provided by this ordinance. Right, permission, privilege and authority are hereby given and granted to the present and future owners and occupants .of the lands lying withinsaid above named drainage limits to open and connect all ditches, drains and sewers which now exist and may be hereafter constructed within said district, into and with the said sewers hereinbefore in this ordinance specified. All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of two hundred fifty and sixty—five hundredths dollars ($ 250s65 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting' the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of two hundred fifty and sixty—five hundredths dollars ($ 250,65 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into five installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public 'Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court kof Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special ,assessment for said improvement, in accordance With the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same Are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 6th day of Feb. A.D. 1923. Approved: Feb. 7, 1923. John F. Hahn, H.P. Pearsons, City Clerk. f Ma yor . AN ORDI NANCE 345 CALLING FOR AN ELECTION IN THE CITY OF EVANSTON AND IN TBE TOWN OF THE CITY OF EVANSTON TO BE HELD ON THE 3rd OF ,APRIL, 1923,E BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That.the annual election of the City of Evanston and Town of the City of Evanston be and the same is hereby ordered to be held in the city of Evanston on Tuesday, the third day of April A.D. 1923, between the hours of seven (7) o'clock in the morning and five (5) o'clock in the after- noon of said day for the purpose of electing the following officers for the said City of, Evanston and Town of the City of Evanston, to -wit: First: A Mayor Second: A City Clerk Third: A City Treasurer. Fourth: One Constable to fill the unexpired term caused by the death of Walter Sullivan. Fifth: Seven (7) Aldermen, One (1) Alderman in and for each ward, in the City of Evanst on for the term of two (2) years. Sixth: One (1) Alderman, in and for the First Ward to fill the unexpired term caused by the resignation of Melvin M. Hawley. Seventh: One (1) Alderman, in and for the Sixth Ward to fill the unexpired term c aused by the resignation of Malcolm B. Sterrett. SECTION 2. That at to the qualified voters, printed upon a separate said election there shall b e submitted the following . question, which shall be and distinct ballot: • For the adoption of an maintain the following named ordinance to equip, conduct and and located playgrounds: MASON PARK - Bounded by Church -Street, Florence Avenue, Davis St. and Dewey Avenue. ACIMMAN PARK - Bounded by Central Street, Elm Avenue, McDaniel Avenue and public alley between Central Street and Harrison Street. ELLIOT PARK - Bounded by liamilton Street, Lake- shore Blv. , Greenleaf Street and Lake Michigan. LAKE FRONT PARK (1) - Bounded by University Place, Greenwood Blv., Sheridan Rd. and Lake Tichigan. LAKE FRONT PARK (2) - Bounded by Greenwood Boulevard, Lakeshore Blv. Han ilton St. and Lake Michigan. BOLTWOOD PARK - Bounded by Main Street, Florence Avenue, Dodge Avenue and Lee Streeto to cost not to exceed $29,486.17, SECTION 3. That at said election there shall b,e submitted to the qualified Voters, the following question, which shall be printed upon a separate and distinct ballot: Shall bonds or obligations for the purpose ' of providing funds to pay the cost of enlarging the' YES Filtration Plant in the sum of V275,000.00 be ' issued by the City Council ? ' NO SECTION 4. That at said election there shall be submitted to the qualified voters, the following question, which shall be printed upon a separate and distinct ballot: t Shall bonds or obligations for th& purpose of providing funds to pay the cost of the purchase ' YES ' and installation of additional pumping apparatus and equipment for the Municipal Water works in the ' NO. '. -sum of $75,000.00 be issued by the City Council ? SECTION 5. That at said election there shall be submitted to the qualified voters, the following question, which shall be printed upon •a, separate and distinct ballot: R, jr Shall bonds or obligations for the purpose of providing funds to pay the cost of improving ' YES BOLTWOOD PARK in the sum, of :rp5p,000.00 be issued by the City Council ? ' NO SECTION 6. That at said election there shall be submitted tD the qualified voters, the following question, which shall be printed upon a separate and distinct ballot: Shall bonds or obligations for the purpose of providing funds to pay the estimated cost, amount-' YES i-ng to $150,000.00 of acquisition for park pur- ' poses by purchase or condemnation of private ' NO lands -b ordering; on Lake Michigan, including riparian rights; part of said lands lying east of Sheridan Square and between Keeney Street and South Boulevard; and the remainder thereof lying East of Sheridan Road and between South Boulevard and the North line of Calvary Cementer extended East; and also in like manner, at an estimated cost of #30, 000.00 to acquire lands for park purposes in the Sixth Ward, in the sum of 4180,000.00 be issued by the City Council ? SECTION 7. That the said election shall be held at the polling places herein provided for in the respective wards of said City, to -wit: First Ward: First Precinct, Polling Place, City Hall. Second Precinct, to " Police Station. Third Precinct, IN " .603 Dempster Street. Second Ward: A ' . First Precinct, " " 1632 Maple Ave Second Precinct, " " 1579; Maple Ave Third Precinct, " " ,805 Dempster St. Third Ward: First Precinct, " " 509 Main St. Second Precinct, " " Fire Station No. 2 Third Precinct, " " 539 Chicago Ave Fourth Ward: First Precinct, " " 701 Washington St. Second Precinct, " " Central School Third Precinct, 542 Asbury Ave Fifth Ward: First Precinct., " " 1942 Maple Ave Second Precinct, " " Foster Field Club House Third Precinct, " " Mason Park " Is Sixth Ward: First Precinct, " " 2008 Central St. Second Precinct, to Is 1929 Central St. Third Precinct, " " 2909 Central St. Seventh Ward: First: Precinct " " 1852 Sherman Ave Second Precinct, " to 2001 Maple Ave Third Precinct, of " Orrington Ave School. SECTION 8. Thatthe following named persons be and they are hereby appointed Judges and Clerks of said election, to —chit: FIRST WARD Judges First Precinct. Clerks J.A. Klein, A. 2. Horning Mrs. J. A. Payne, Fred Kappler Mrs. Be J. Houghtaling. Second Precinct. Henry J. Suhr, R • Be Huffman L. S. McGowan John A. Schreurs Warren D. Schreurs IZ 1 9198 34`."7 0 FIRST PARD Judges -Third Precinct. John Nally J. -J. Adams Margaret M. Doyle. Bijou Peterson Mrs. Ruth Milne John J. Steigelman, Harold J. Cook Edward M.`. Kelly E. S..Nordberg Mrs. Anna J. Nordberg William R. Sumner. Edwin Price Warren Edwards John G..Durno J. W. S. Reid W. L..McCague- U. G. Buck Paul H. Smythe F. A. Nordahl C.S. Roberts C. E. Hall W. J. Harris Miry J. Diettrich J. P. Shaffer Phil M. Knepper Jos. E. Wiltgen Gilbert C. Arndt Nathan I.�Noach Peter N.. Jans Co P. Steigleman Harry J. Crost, L. me Davis Thomas L. Hayes M. Be Johnson Charles Devine Fred C. Bryant Perry S. Bade J. Be Blair, Eva Orvis Charles H. Rose W. E. Buchon Mary Schumacher J. W.. Beckstr as A. J. McClaughry C. R. Johnson SECOND WARD First precinct. Second Precinct. Third Precinct. THIRD WARD First Precinct Second Precinct Third Precinct FOURTH WARD First Precinct. Second Precinct Third Precinct FIFTH WARD First Precinct Second Precinct Third Precinct. SI ZTH WARD First Precinct Second Precinct Third Precinct a Clerks Meta Haniltbn 1m. I. Dugdal e William Be Keefe Abbott Peterson Flora A. -Schaefer Irene C. Downie Catherine H. Adams Grace Schwartz Mrs. Margaret Dickinson Merrett S. Morgan John M. Prendergast H..A..Keyes Mrs. S. Be Buck Edith Ball Arthur J. Goodreau John P. Petry Xavier F. Pilon Caroline Edwards D. J. Dupre Mae Remich A. Forslund H. A. Olson Helen Dohse Mrs. Martha Twiggs Alice Decker Vivian Fiesel F. R. Butow H. C. Chandler Clara Stewart F.. A. Schumacher Mary S. Mohr Adolph F. Peterson 9 348 Judges H. G. Johns o n George W. Pattulo Edward A. ]Ne 1 s on H. G. Carlisle Tom Flood Marian C. , Hart Frank J. Kline S. C. Ingraham I. T. Logan SEVENTH WARD *First Precinct. Second Precinct Third Precinct Clerks George W. Crane William R. ,spear Mary H. Flood John W. Hyde Mrs. M.L. Anderson Mrs. Della Loberg SECTION 9. That the City Clerk is hereby directed to provide for giving, notice of said election and conducting the same as provided by Chapter 23 of the Revised Ordinances of the City of Evanston and as provided by law. SECTION 10. This ordinance shall be in force and effect from and after its passage and approval. Adopted by the City Council of the City of Evanston on the 6th day of March A.D. 1923. Approved March 7, 1923. John F. Hahn, H.P. Pearsons, . , City Clerk. Mayor. ., - - - - - - - - - - AN ORDINANCE Amending an ordinance entitled "An Ordinance to classify,. regulate and restrict the locations of trades and industries and the location of buildings designed for specified uses and to regulate and limit the height and bulk of buildings hereafter erected, to regulate and limit the intensity of the use of lot areas and to regulate and determine the area of yards, courts and other open spaces within and surrounding such buildings, and to establish the boundaries of districts for the said purposes and prescribing penalties for the violation of its provisions", adopted by the City Council of the City of Evanston January 18, 1921, by classifying on the "Height Map" of said ordinance adopted January 18, 1921 as a 45 foot Height District instead of a 35 foot Height District, certain described property and prescribing ,penalties for a violation of its provisions• BE ;-T ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON, ILLINOIS. SECTION 1. That the ordinance entitled "An ordinance to classify, regulate and restrict the locations of trades and industries and the location of buildings designed for specified uses and to regulate and limit the height and bulk of buildings hereafter erected, to regulate and limit the intensity of the use of lot areas and to regulate and determine the area of yards, courts and other open spaces within and surrounding such buildings and to establish the boundaries of districts for the said purposes and prescribing penalties for the violation of its provisions", adopted b7 the City Council of the City of Evanston January 18, 1921, be and the same hereby is amended as hereinafter set forth. SECTION 2. That the district described as lots 12 to 22 (both inclusive) in Block 37 and lots 7 and 8 in Block ,36 North Evanston,'in New Trier, Lots 3 to 10 (both inclusive) in Block 9 and Lot 1 in Block 89 North Evanston, in the East -t of Frac- tional Section 12, Township 41 North, Range 13, East of, the 3rd Principal meridian, all od said described property being -situated in the City of Evanston, Cook County, Illinois, otherwise known by Street and house numbers as numbers 1701 to 1815 (both inclu- sive) Central Street; 2600 to 2612 (both inclusive) Eastwood Avenue; 2600 to 2612 (both inclusive) Broadway Avenue; 1627- to 1633 (both inclusive) Central Street; 2601 to 2613 (both inclusive) Eastwood Avenue; 1700 to 1 730 (both inclusive) Central Street; 2526 to 2536 (both inclusive) Eastwood Avenue; 1630 and 1632 Central Street; 2523 to 2537 (both inclusive) Eastwood Avenue, and classified on the "Height Map", said map IZ 0198 being a part of said ordinance adopted January 18, 1921 as a 349 35 foot "Height District", be and the said district is hereby changed to a 45 foot Height District* SECTION 3. The penalties provided for in the said ordi- nance adopted January 18, 1921 for a violation of any of its regulations and restrictions applicable to similarly situated 45 foot Height Districts, shall be applicable to said ordinance as herein amended. SECTION 4. All ordinances or .parts 'of ordinances in conflict with any of the provisions of this ordinance are hereby repealed. " SECTION 5. This ordinance shall be in effect from and after its passage, approval andpublication according to law* Adopted by the City Council of the City of Evanston on the 6th day of ]larch A.D. 1923. Approved: March 7, 1923. John Fe Hahn, H. P. Pears ons, City Clerk. mayor, Published in Evanston hews Index March 9,' 1923. - - - - - - - - - - AN ORDINANCE Amending an ordinance entitled "An Ordinance to classify, regulate and restrict the locations of trades and industries and the location of buildings designed for specified uses and to regulate and limit the height and bulk of buildings hereafter erected, to regulate and limit the intensity of the use of lot areas and to regulate and determine the area of yards, courts and other open spaces within and surrounding such buildings, and to establish the boundaries of districts for the said purposes and prescribing penalties for the viola- tion of its provisions", adopted by the City Council of the City of Evanston, January 18, 19219 by amending Section 1 of said ordinance and prescribing penalties for a violation of its provisions. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON, ILLINOIS . SECTION 1. That the ordinance entitled "An ordinance to classify, regulate and restrict the locations of trades and industries and the location of buildings designed for specified uses and to regulate and limit the height and bulk of buildings hereafter erected, to regulate and limit the intensity of the use of lot areas and to regulate and determine the area of yards, courts and other open spaces within and surrounding such buildings, and to establish the boundaries of districts for the said purpose and prescribing penUties for the violation of its provisions", adopted by the City Council of the City of Evanston January 18, 1921, be and the same hereby is amended as here inaf ter set f orth'. SECTION 2. That Section-1 of the said ordinance be and the same is hereby amended so as to read and be as follows: Section 1. Definitions. For the purpose of this ordinance, c ertain terms and words are herewith defined as followsr Words used in the pres,nt tense include the future; words in the singular number include the plural number, and words in the plural number include the singular number; the word "Building" includes the word "structure"; the word "shall" is mandatory and not directory. Any words not herein defined shall be construed as defined in the Building Code of the City of Evanston, adopted March 26, 1915, and amendments thereto. 35M Accessory Building: A subordinate building or portion of main building, located in and occupying not more than 30,% of the rear yard of the main building, whose use is incidental to that of the main building, and which does not exceed twelve (12) feet in height. Alley: A public thoroughfare ndt over 24 feet wide Apartment house: A tenement house. Apartment Hotel: An apartment hotel is an apartment house in which are provided dining room accommodations for the joint use of the apartment house tenants. Apartment: A household unit in a tenement or apartment house, suitable for occupancy for one or more persons. Area: See "Building Area". Basement: A story partly under ground, which, unless sub- divided and used for tenant purposes, shall not be included as a s t•ory f or purposes of height• measurement. Boarding House: A boarding house is a building or place wherein table board is provided to five or more individuals pursuant to previous arrangement and not to any one who may apply. Building: A structure having a roof supported by columns or walls for the shelter, support or enclosure of persons, animals or chattels; and when s eparated by division wells from the ground up, and without openings, each portion of such building shall be deemed a separate building* Building Area: The maximum horizontal projected area of a building and its accessories, excluding open steps, terraces, and cornices projecting not more than thirty (30) inches. Community uarages: A series of private garages located jointly on a common lot and having no public shop or service in connection therewith, with capacity for not more than five auto- mobiles. Community garages may exceed a five automobile capacity provided the lot whereon such community garages are located shall contain 1,000 square feet for each automobile stored. Corner Lot: A lot situated at the junction of two or more streets, having a width not greater than fifty ^(50) feet. Depth of Rear Yard: The mean horizontal distance between the rear line of the building and the center line of the alley, where an alley exists, otherwise the rear lot line. Depth of Lot: The mean horizontal distance between the front and rear lot lines. District: Sections of the City of Evanston for which the regulations governing the height, the area, or the use of buildings and premises are the same. Height of Building: The vertical distance measured from the curb level opposite the middle of the front` of the building to the highest point of the roof for flat roofs; to the deck line for mansard roofs, and to the mean height level (between eaves and ridge) for gable, hip and gambrel roofs* where a building is located upon a terrace the height may be measured from the average ground level of the terrace at the building wall. Height of Court or Yard: +The vertical distance from the lowest level of such court or yard to the highest point of any bounding wall. Hotel: A hotel is a building in which board and lodgings are provided and offered to thepublic for compensation. As. such it is open to transient guests in contradistinction to a boarding, a lodging house, an apartment house or an apartment hotel which are herein specifically defined. Inner Court: An open unoccupied space surrounded on all sides by walls, or by walls and a lot line. Intensity of Use of Lot: That portion of the area of a 1NIZ which is occupied by or which maybe occupied under this ordinance by buildings and their accessorieso, Length of Outer Court: The mean horizontal distance between the open and closed ends of the court. " Lodging Houser A lodging house is a building or place providing lodgings to individuals pursuant to previous arrange- ment and not to any one who may apply. Lot: Land occupied or to be occupied by a building and accessory buildings and including the open spaces required under this ordinance. A lot may be land so recorded on the Records of the Recorder of Deeds of Cook County, Illinois. Lot Lines: The lines bounding a lot as defined herein. Non -conforming Use: A building .pr premises occupied by a use that does not conform with the regulations of the use district in which it is situated. Outer -court: An open unoccupied space on the same lot with a building, extending to and opening upon a street, alley or yard. Private Garage: A garage with a capacity for not more than four steam or motor -driven vehicles, Public Garage: Any premises used for housing or care of more than five steam or motor -driven vehicles, or where any such vehicles are equipped foir operation, repaired, or kept for remuneration, hire or sale, not including exhibition or show rooms for model cars, ` Private Stable: A stable with a capacity for not more than four horses, Public Stable: A stable. with a capacity for more than four horses, Rear Yard: An open unoccupied space on the same lot with a building between the rear line of the building '(excluding accessory buildings) and the rear line of the lot, for the full width of the lot. Side Yard: An open unoccupied space on the same lot with a building between the building and the side line of the lot extending through from the front building line to the rear yard. Single Family Dwelling: A detached building having accommodations for and occupied by only one family, Story: That portion of a building included between the surface of any floor and the surface of the floor next above` its or if there be no floor above it then the space between such floor and the ceiling next above it, provided that in 80 foot height Districts hotels and ap artment•hotels.may include mezzanine floors of not more than fifty per cent of the entire first floor area and such first floors including such mezzanine floors shall be held to be one story. Half Story: That portion of a building in the 35 foot height district, between the eaves and ridge lines of a pitched roof, Such space may be used for tenant purposes. zt Structural Alterations: Any change in the supporting` members of a building, such as bearing walls or partitions, columns, beams or'girders, excepting such alterations as may be required for the safety of the building. `tenement Houne: A building or portion thereof used or intended to be used as a residence for two or more families in separate apartments, Terrace: A natural or artificial earthen embankment between a building and its street front. The "height of terrace" shall be the difference in elevation between the average curb level opposite the front of the middle of the building and the average "elevation of the terrace at the building wall. 354 Tower: A subordinate enclosed structure projecting above e root line of a main building and having a roof supported by columns or walls. Such tower shall have a minimum height not less than one and one-half tirhe.s its maximum horizontal dimension (length or width) and may be used for tenant purposes. SECTION 3. All appropriate penalties in said ordinance now provided shall be applicable to said ordinance as amended. SECTION 4. All ordinances or parts of ordinances in conflict With any of the provisions `of this ordinance are hereby repealed. SECTION 5. This ordinance shall be in effect from'and after its passage, approval and publication according to law. Adopted by the City Council of .the City of Evanston on the bth day of March A.D. 1923. Approved: Published in Evanston News -.Index March 10, 1923. March 9, 1923. H.P. Pearsons, Mayor, John F. Hahn, City Clerk. AN ORDINANCE Providing for the Borrowing of money and issuing bonds of the City of Evanston, Cook County, Illinois, to the amount of Seventy-five thousand dollars ($75,000) for the purpose of providing funds to pay the cost of purchasing and installing additional pumping apparatus and equipment for the Municipal Water Works of said City, and providing for the collection of a direct annual tax for the payment of the principal and interest of said bonds. BE IT ORDAI BED, by the City Council of theCity of Evanston, Cook County, Illinois: Section 1. That for the purpose of providing for a general public improvement in the City of Evanston, Illinois, being the necessary costs and expenses of the purchase and installation of additional pumping apparatus and equipment for the Municipal Water Works, bonds of the said City of Evanston be issued to the amount of Seventy-five 'Thousand Dollars ($75, 000) in the denomination of One Thousand Dollars ($1000) each, numbered from one (1) to seventy-five (75) inclusive, bearing date of May 1, 1923, and be- coming due and payable in numerical order, Three Thousand Dollars ($3,000) each year for nineteen (19)' years commencing on May 1, 1924, and on the first day of May in each and every year thereafter until and including May 1, 1942, and Eighteen Thousand Dollars ($18,000) on May 1, 1943. Said bonds shall bear interest at the rate of four and one-half (4*) per cent per annum, payable semi - an nually on May 1 and November 1 of each year, which interest payments shall be evidenced by proper interest coupons attached to each of said bonds, and severally maturing on said interest payment dates, both principal and interest being payable at the office of the City Treasurer in the City of Evanston, State of Illinois. Section 2. The said bonds shall be signed, by the Igor of the said City of Evanston, and attested by the City Clerk of the said City under its corporate seal, and the interest coupons.thereto attached shall be signed and attested by said officials, respect-* ively, by their fac simile signatures and said officials shah., by the execution of said bonds, adopt as and for their respective proper` signatures, their respective fac simile signatures appearing upon said coupons. Said bonds and coupons shall be issued sub- stan tially in the f ollowing forms : (Form of Bond) U13ITED STATES OF AMEKICA STATE OF ILLINOIS COUNTY.OF COOK CITY OF EVANSTON MUNICIPAL WATER WORKS PUMPING APPARATUS BOND. NO $1,000. 1Z0i98 �3593 KNOW ALL MEN BY THESE PRESENTS: That the City of Evanston in the County of Cook and State of. Illinois, acknowledges itself to owe and for value received hereby promises to pay to bearer the sum of One Thousand Dollars (01, 000) on the first day of May, A.D. 19_, together with interest on said sum from the date hereof until paid, at the rate of four and one half (4*) per cent ,per annum, payable semi-annually on the first day of May and the first day of No.vember in each year upon presentation and surrender of the annexed interest coupons as they severally become due and payable. Both principal and interest are hereby made payable in lawful money of the United States at the office of the City Treasurer in the City of Evanston, State of Illinois. For the prompt payment of this bond, both principal and interest, as aforesaid, at maturity, the full faith, credit and resources of said City are hereby irrevocably pledged. This bond. is one of a series of bonds issued by said City for the purpose of paying the necessary expenses of the purchase and installation of additional pumping apparatus and equipment for the Municipal Water Works System of said City, pursuant to and in all respects in compliance with an Act entitled "An Actto provide for the incorporation of Cities and Villages", approved April loth, 1872, and all acts amendatory thereof, and an ordinance duly passed by the Council of said City and submitted to and approved by the voters of said City at an election duly called and held for that purpose. And it is hereby certified and recited that all acts, conditions and things required by the Constitution and laws of the State of Illinois to exist or to be done, precedent to and in the issuance of this bond have existed and have been properly done, happened and been performed in regular and due form as required by law; and that the indebtedness of said City, including this bond, does not exceed the constitutional or statutory limitations; and that provision has been made for the collection of a suffi- cient direct annual tax in addition to all other. taxes, on all the taxable property in said City to pay the interest hereon as the same falls due and also to pay and discharge the principal hereof at maturity. IN WITNESS WHEREOF, The City of Evanston, by its Council, has caused its corporate seal to be hereto affixed and this bond to be signed by its Mayor and attested by its City Clerk, and the coupons hereto attached to be signed and attested by said officers respectively, by their respective fac simile signatures, and said officers do, by the execution hereof, adopt as and for their respective proper signatures, their respective fac simile signatures appearing on said coupons, all as of the first day of May, 1923. Attest: City Clerk Mayor (Form of Coupon) NO* $ On the first day of , 19 , the City of Evanston, Cook bounty, Illinois, will pay to bearer Dollars at the office of the City Treasurer in the City of Evanston, State of Illinois, for interest due on thatdate on its Municipal Water Works Pumping Apparatus Bond Dated MW:_l, 1923, No. .. Attest: City C1 erk Mayor Section `3. That, in order to provide for the collection of a direct annual tax sufficient to pay the interest on said bonds as the same fal 1 s due, and to pay and discharge the principal thereof at maturity, there be and there is hereby levied upon all the taxable property within said City in each year while any of said bonds are outstanding, a direct annual tax sufficient for that purpose, and that there be and there is hereby levied upon 411 the taxable property within said City, and 354 in addition to all other taxes, the following direct annual tax, to -wit: For the year 1923, a tax sufficient to raise the sum of $6,375 to pay principal and interest; For the year 1924, a tax sufficient to raise the sum of 06,240 to pay principal and interest; For the year 1925, a tax sufficient to ra'ise the sum of 46,105 to pay principal and interest; For the year 19260 a tax sufficient to raise the sum of §50970 to pay principal and interest; For the year 19270 a tax sufficient to raise the sum of �5,835 to pay principal and interest; For the year 1928, a tax sufficient to raise the sum of 450700 to pay principal and interest; For the year 1929, a tax sufficient to raise the sum of jb 9 565 to pay principal and interest; For the year 1930, a tax sufficient to raise the sum of 45,430 to pay principal and interest; For the year 1931, a tax sufficient to raise the sum of 45,295 to pay principal and interest; For the year 1932, a tax sufficient to raise the sum of V5,160 to pay principal and interest; For the year 1933, a tax sufficient to raise ,the sum of *5,025 to pay principal and interest; For the year 1934s a tax sufficient to raise the sum of $4,890 to pay principal and interest; For the year 1935, a tax sufficient to raise the sum of §4,755 to pay principal and interest; For the year 1936, a tax sufficient to raise the sum of *4,620 to pay principal and interest; For the year 1937, a tax sufficient to raise the sum of 0,485 to pay principal and interest; For the year 19380 a tax sufficient too raise the sum of g4,350 to pay principal and interest; For the year 1939, a tax sufficient to raise the sum of §4,215 to pay principal and interest; For the year 1940, a tax sufficient to raise the sum of V4, 080 to pay principal and interest; For the year 1941 a tax sufficient to raise the sum of V3,945 to pay principal and interest; For the year 1942, a tax sufficient to raise the sum of g18,810,to pay principal and interest; That the interest and principal maturing at any ti*e- when there are not sufficient funds<on hand to pay the same, be promptly paid out of the general fund of the City and the said fund reim- bursed from the taxes hereby levied for such purpose, when the same are collected. Section 4. That forthwith, upon the approval of this ordinance by the voters of said City, a copy of this ordinance, certified by the•Clerk of said City, which clerk in and by his Certificate certi- fying said copy, shall certify to the approval of this ordinance by the voters of said City, shall be filed with the County Clerk of the County of Cook, who shall in and for each of the years 1923 to 1942 inclusive, ascertain the rate per cent required to produce the aggregate tax hereinbefore levied for each of said years respectively, and extend the same for collection on the Tax Books in connection IZ 01 8 with other taxes levied in eac in and by said City for genera and in each of said years such collected by said City in like poses for each of said years a collected, said taxes shall be principal and interest upon th e Section 5. That all ordinances, resolutions and orders, or parts thereof, in conflict with the provisions ,of this ordinance, be and the same are hereby repealed. Adopted by the City Council of the City of Evanston onthe 13th day of March A.D. 1923. Approved: March 13, 1923. John F. Hahn, H.P. Pearsons, City Clerk Mayor . AN ORDINANCE providing for borrowing money and issuing bonds of the City of Evanston, Cook County, Illinois, to the amount of two hundred and seventy-five thousand dollars ($275,000) for the purpose of pro- viding funds to pay the cost of enlarging the filtration plant and providing for the collection of a direct annual tax for the payment of the principal and interest of said bonds. BE IT ORDAINED, by the City Council of the City of Evanston, Cook County, Illinois: Section 1. That for the purpose of paying for a general public improvement in the City of Evanston, Illijois, being the necessary costs and expenses of enlarging the Filtration Plant, bonds of the said City of Evanston be issued to the amount of Two Hundred and Seventy-five Thousand Dollars (0275,000) in the denomination of One Thousand Dollars ($1000) each, numbered from one (1) to two hundred and seventy-five (275) inclusive, bearing date of May 1, 1923, and becoming due and payable in numerical order, Fourteen Thousand Dollars ($149000) each year for nineteen (19) years commencing on May 1, 1924, and on the first day of May in each and every year thereafter until and including May 1, 1942, and Nine Thousand Dollars ($9,000)-on May 1, 1943. Said bonds shall bear interest at the rate ofibur and one half (4*) per cent per annum, payable semi-annually, on may 1 and November 1, in each year, which interest payments shall be evidenced by proper interest coupons attached to each of said bonds, and severally maturing on said interest payment dates, both principal and interest being payable at the office of the City Treasurer in the City of Evanston, State of Illinois. Section 2. The said bonds shall be signed by the Mayor of the said City of Evanston, and attested by the City Clerk, of the said City under its corporate seal, and the interest coupons thereto attached shall be signed and attested by said officials, respectively, by their fac simile signatures and said officials shall, by the execution of said bonds, adopt as and for their respective proper signatures, their respective fac simile signatures appearing upon said coupons. Said bonds and coupons shall be issued substantially,in the following forms: (Form of Bond) UNITED STATED OF AMERICA STATE OF ILLINOIS COUNTY OF COOK CITY OF EVANST CK FILTRATION PLANT ENLARG=NT BOND 1D NO t 91,0000 KNOW ALL MEN BY THESE PRESENTS: That the City of Evanston in the County'of Cook and State of Illinois, acknowledges itself to owe and for value received hereby promises to pay to bearer the sum of One Thousand Dollars ($1000) on the first day of May, A.D. 19 , together with interest on said sum from the date hereof 35Q until paid, at the rate of four and one-half (4f) per cent per annum payable semi-annually on the first day of May and the first day of November in each year upon presentation and surrender of the annexed interest coupons as they severally become due and payable. Both principal and interest are hereby made payable in`lawful money of the United States at the office of the City Treasurer in the City of Evanston, State of Illinois. For the prompt payment of this bond, both principal and interest, as afgresaid, at maturity, the full faith, credit and resources of said City are hereby irrevocably pledggd. This bond is one of a series of bonds issued by said City for the purpose of paying the necessary expenses of enlarging the Filtration Plant of said City, pursuant to and in all respects in compliancq with an Aqt entitled "An Act to provide for the incor- poration of Cities and Villages", .approved April loth, 1872, and all acts amendatory thereof, and�an ordinance duly passed by the Council of said City and submitted to and approved by the voters of said City at an election duly called and held for that purpose. And it is hereby certified and recited that all acts, con- ditions and things required by the Constitution and laws of the State of Illinois to exist or to be done, precedent to and in the issuance of this bond have existed and have been properly done, happened and been performed in regular and `due form as required by law; and that the indebtedness of said City, including this bond, does not exceed the constitutional or statutory limitations; and that provisign has been made for the collection of a sufficient direct annual tax in addition to all other taxes, on all the taxable property in said City to pay the interest hereon as the same falls due and also to pay and discharge the principal hereof at maturity. IN WITNESS WHEREOF, The City of Evanston, by its Council, has caused its corporate seal to be hereto affixed and this bond to be signed by its Mayor and attested by its City Clerk, and the coupons hereto attached to be signed and at ested by said officers respectively, by their respective fac simile signatures, and said officers do, `by the execution hereof, adopt as and for their respective proper signatures, their respective fac simile signatures appearing on said coupons, all as of the first day of May, 1923. Attest: NO ` Mayor City Cl erk (Form of Coupon) CP 6n the first day of' , 19__,_, the City of Evanston, Cook County, Illinois, will pay•to bearer Dollars at the office of the City 'Treasurer in the City of Evanston, State of Illinois, for interest due on that date on its Filtration Plant Enlargement Bond dated,`May 1, 1923, No. . Attest: City Clerk Mayor Section 3. That, in order to provide for the collection of a direct annual tax sufficient to pay the interest on said bonds as the same falls due, and to pay and discharge the principal thereof at maturity, there be and there is hereby levied upon all the taxable property within said City in each year while any of said bonds are outstnading, a direct annual tax sufficient for that purpose, and that there be and there is hereby levied upon all the taxable property within said City, and in addition to all other taxes, the following direct annual tax, to -wit: For the year 1923, a tax sufficient to r aise the `sum of 926,375 to pay principal and interest; For the year 1924, a tax sufficient to raise the sum of g25,745 to pay principal and interest; For the year 1925, a tax sufficient to raise the sum of $25,115 to pay principal and interest; 110198 357 For the year 1926, a tax sufficient to raise th sum of ;24,485 to pay principal and interest; } For the year 19278 a tax sufficient to raise the sum•of §230855 to pay principal and interest; For the year 1928, a tax sufficient to raise the sum of $239225 to pay principal and interest; For the year 1929, a tax sufficient to raise th sum of $229595 to pay principal and interest; For the year 1930, a tax sufficient to raise the sum of g21,965 to pay principal and interest; Fvr the year 1931, a tax sufficient to raise the sum'of §21,335 to pay principal and interest; For the year 1932, a tax sufficient to raise the BUM of 420,705 to pay principal and interest; For the year 1933, a tax sufficient to raise the sum of $20,075'to pay principal and interest; For the year 1934, a tax sufficient to raise the sum of f190445 to pay principal and interest; For the year 1935, a tax sufficient to raise the sum of :�18,815 to pay principal and interest; For the. year 19369 a tax sufficient to raise the sum of V18,185 to pay principal and interest; For the year 1937, a tax sufficient to raise the sum of $17,555 to pay principal and interest; For the year 1938, a tax sufficient to raise the sum of 416,925 to pay principal and interest; For the year 1939, a tax sufficient to raise the sum of §16,295 to pay principal and interest; For the year 1940, a tax sufficient to raise the sum of §15,665 to pay principal and interest; For the year 1941, a tax sufficient to raise the sum of §15,035 to pay principal and interest; For the year 1942s a tax sufficient to raise the sum of §9,405 to pay principal and interest; 'That the interest and principal maturing at any time when there are not sufficient funds on hand to pay the same, be promptly paid out of the general fund of the City and the said fund reimbursed from the taxes hereby levied for such purpose, when the same are collected. Section 4. That forthwith, upon the approval of this ordinance by the voters of said City, a copy of this ordinance, certified by the Clerk of said City, which Clerk in and by his certificate certifying said copy, shall certify to the approval of this ordinance by the voters of said City, shall be filed with the County Clerk of the County of Cook, who shall in and for each of the years 1923 to 1942, inclusive, ascertain the•rate per cent required to produce the aggregate tax hereinbefore levied for each of said years respectively, and extend the same for collection on the Tax Books in connection with other taxes levied in each of said years respectively, in and by said City for general corporate purposes of said City, and in each of said years such annual tax shall be levied and collected by said City in like manner as taxes for general purposes for each of said years are levied and collected, and when collected, said taxes shall be used for the purpose of paying principal and interest upon the bonds hereinbefore described as the same shall mature. Section 5. That all ordinances, resolutions and orders, or parts thereof, in conflict with theprovisions of this ordinance, be and the same are hereby repealed. 358 Adopted by the City Cotnc it of the City of Evanston on the 13th day of March A.D. 1923. approved: March 13, 1923 John F. Mahn, H.P. Pearsons, City Clergy:. Mayor. AN ORDINANCE providing for borrowing money and issuing bonds of the City of Evanston, Cook County, Illinois, to the amount, of Fifty. Thousand Dollars ($50,000) to pay the cost of improving Boltwood Park, and Providing for the Collection pf a Direct Annual Tax for the payment of the principal and interest of said bonds. BE IT ORDAINED, by the City Council of the City of Evanston, Cook County, Illinois: Section 1. That for the purpose of paying for a general public improvement in the City of. -Evanston, Illinois, being the necessary costs and expenses of improving Boltwood Park, bonds of the said City of Evanston be issued to the amount of Fifty Thousand Dollars (.$50,000) in the denomination of One Thousand Dollars (61000) each, numbered from one (1) to fifty (50), inclu- sive, bearing date of May 1, 1923, and becoming due and payable in numerical order, Two Thousand Dollars ($2000) path year for nineteen (19) years commencing on May 1, 1924, and on the first day of May in each and every year thereafter until and including May 1, 1942, and Twelve Thousand Dollars (0129000) on May 1, 1943. Said bonds shall bear interest at the rate of four and one-half (4*) per cnet per annum, payable semi-annually, on May 1 and November 1 in each year, which interest payments shall be evidenced by proper interest coupons attached to each of said bonds, and severally maturing on said interest pay;ient dates, both principal and interest being payable at the office of the City Treasurer in the City of Evanston, State of Illinois. Section- 2. The said bonds shall be signed by the Mayor of the said City of Evanston, and attested by the City Clerk of the said City under its corporate seal, and the interest coupons thereto attached shall be signed and attested 79y said officials, respectively, by their fac simile signatures and said officials shall, by the execution of sa}d bonds, adopt as and for their respective proper signatures, their respective,fac simile signatures appearing upon said coupons. Said bonds and coupons shall be issued substantially in the following forms: (Form of Bond) UNITED STATED OF ANERICA STATE OF ILLINOIS COUNTY OF COOK CITY. OF EVANSTON BOLTWOOD PARK Ij0?ROVMrLEj T BOND tJ 0 FP1000 . KNOW ALL MEN BY THESE PRESENTS: That the City of Evanston in the County of Cook and State of Illinois, acknowledges itself to owe and for value received hereby promises to pay to bearer the sum of One Thousand Dollars ' ($1000) on the first day of May, A.D. 19_, together with interest on said sum from the date hereof until paid, at the rate of four and one-half (4--) per cent per annum, payable semi-annually on the first day of May and the first day of November in each year upon presentation and surrender of the annexed interest coupons as they severally become due and payable. Both principal and interest are hereby made payable in lawful money of the United States at the office of the City Treasurer in the City of Evanston, State of Illinois, For the prompt payment of this bond, both principal and interest, as aforesaid, at maturity, the full faith, credit and resources of said City are hereby irrevocably pledged. This bond is one of a series of bonds issued by said City for the purpose of paying the necessary expenses of improving Boltwood Park in said City, pursuant to and in all respects in compliance with an Act entitled "tin act to provide for the incor. IZ 19198 359 poration of Cities and Villages", approved April loth, 1872, and all a cts amendatory thereof, and an ordinance dilly passed by the Council of said City and submitted to and approved by the voters of said City at an election duly called and held for that pur- pose. And it is hereby certified and recited that all acts, con- ditions and things required by the Constitution and laws of the State of Illinois to exist or to be done, precedent to and in the issuance of this bond have l existed 5.nd have been properly done, happened and been performed in regular and due form as required by law; and that the indebtedness of said City, in- cluding.this bond, does not exceed the constitutional or statutory limitations; and that provision has been made for the collection of a sufficient direct annual tax in addition to all other taxes, on all the taxable property in said City to pay the interest hereon as the same falls due and also to pay and discharge the principal hereof at maturityo IN WITNESS tVHEREOF, The City of Evanston, by its Council has caused its corporate seal to be hereto affixed and this bond to be signed by its Mayor and attested by its City Clerk, and the coupons hereto attached to be signed and attested by said officers respectively, by their respective fac simile signatures, and said officers do, by the execution hereof, adopt as and for their respective proper signatures, their respective fac simile signatures appearing on said coupons, all as of the . first day of Mayt 1923. Mayor Attest: ` City Clerk (Form of Coupon) No. I On the first day of 19�, the City of Evanston, Cook County, Illinois, will pay to bearer Dollars at the office of the CitS, Treasurer in the City of Evanston, State of Illinois, for interest due on that date on its Boltwood Park Improvement Bond dated May 1, 1923, No . Attest City Clerk. Mayer Section 3. That in order to provide for the collection of a direct annual tax sufficient to pay the interest on said bonds as the same falls due, and to pay and discharge the principal thereof`at maturity, there be and there is hereby levied upon all the taxable property within said City in each year while any of said bonds are outstanding, a direct annual tax sufficient for that purpose, and that there be and there is hereby levied upon all the taxable property within said City, and in addition to all other taxes, the following direct annual tax, to -wit: ` For the year 1923, a tax sufficient to raise the sum of 44,250 to pay principal and interest; For the year 1924, a tax sufficient to raise the sum of V4,160 to pay principal and interest; For the year 1925, a tax sufficient to raise the sum of 04,070 to pay principal and interest; For the year 1926, a tax suff lcient to raise the sum of 43,980 to pay principal and interest; Yor the year 1927, a tax sufficient to raise the sum of §3;890 to pay principal and interest; For the year 1928, a tax sufficient to raise the sum of *3,800 to pay principal and interest; �t For the year 1929, a tax sufficient to raise the sum of §3,710 to pay principal and interest; For the year 1930, a tax sufficient to raise the sum of $3,62Q to pay principal and interest; For the year 1931, a tax sufficient to raise the sum of 43,530 to pay principal and interest; For the year 1932, a tax sufficient to raise the sum of V3,440 to pay principal and interest; For the year 1933, a tax sufficient to raise the am of V3,350 to pay principal and interest; For the year 1934, a tax sufficient to raise the sum of §3,260 to pay principal and interest; Y For the year 1935, a tax sufficient to raise the sum of *3,170 to pay principal and interest; For the year 1936, a tax sufficient to raise the sum of 43,080 to pay principal and interest; For the year 1937, a `tax sufficient to raise the sum of 42,990 to pay principal and interest; ` For the year 1938, a tax sufficient to raise the sum of 429900 to pay`principa.l and interest; For the year 1939, a tax sufficient to raise the sum of 42,810 to pay principal and interest; For the year 1940, a tax sufficient to raise the sum of 42,720 to pay principal and interest; For the year 1941, a tax sufficient to raise the sum of §2,630 to pay principal and interest; For the year 1942, a tax sufficient to raise the sum of §12,540 to pay principal and interest; That the interest and principal maturing at any time when there are not sufficient funds on hand to pay the same, be promptly paid out of the general fund of the City and the said fund reim- bursed from the taxes hereby levied for such purpose, when the same are collected. Section 4. That forthwith, upon the approval of this ordi- nance by the voters of said City, a copy of this ordinance, certified by the Clerk of said City, which Clerk in and by his certificate certifying said copy, shall certify to the approval of this ordinance by the. voters of said City, shall be f iled with the County Clerk of the Bounty of Cook, who shall in and for each of the years 1923 to 1942, inclusive, ascertain the rate per cent required to produce the aggregate tax hereinbefore levied for each of said years respectively, and extend the same for collection on the Tax Books in connection with other taxes levied in each of said years respectively, in and by said City, for general corporate purposes of said City, and in each of said years such annual tax shall be levied and collected by said City in like manner as taxes for general purposes for each of said years are `levied and collected, and when collected, said taxes shall be used for the purpose of paying principal and interest upon the bonds heretofore described as the same shall mature. Section 5. That all ordinances, resolutions and orders, or parts thereof, in conflict with the provisions Of' this ordinance, be and the same are hereby repealed• Adopted by the City Council of the City of Evanston on the 13th day of March A.D. 1923. Approved: March 13, 1923. John F. Hahn, H.P. Pearsons,City Clerke lay or . IZ 0198 AN ORDINANCE 361 providing for borrowing money and issuing bonds of the City of Evanston, Cook County, Illinois, to the amount of one hundred and fifty thousand Dollars ($150,000) for the purpose of pro- viding funds to pay the cost of acquiring for park purposes,. by purchase or condemnation, private lands pordering on Lake Michigan including riparian rights; part of said lands lying east of Sheridan Square and Between Keeney Street and South Boulevard; and the remainder thereof lying eastof Sheridan Road and between South Boulevard and the north line�of Calvary Cemetery extended east. BE IT ORDAINED, by the City Council Df the City of Evanston, Cook County, Illinois: Section 1. That for the purpose of paying f or a general public improvement in the City'of Evanston, Illinois, being the necessary costs and expenses of acquiring for park purposes, by purchase or condemnation, private lands bordering on Lake Michigan including the riparian rights; part of said.lands lying east of Sheridan Square and between Keeney Street and South Boulevard, and the remainder thereof lying east of Sheridan Road and between South Boulevard and the north line of Calvary Cemetery extended east, bonds of the said City of Evanston be issued to the amount of One Hundred and Fifty Thousand Dollars (8150,000) in the denomination of One Thousand Dollars ($1000) each,numbered from one (1) to one hundred and fifty (150) inclusive, bearing date of May 1, 1923, and becoming due and payable in numerical order, Seven Thousand Dollars ($7000) each year for nineteen (19) years commencing on May-1, 1924, and on the first day of May in each and every year thereafter until`and including May 1, 1942, and Seventeen Thousand Dollars ($17,000) on May 1, 19434 Said bonds shall bear interest at the rate of four and one-half (4*) per' cent per annum, payable semi-annually, on May 1 and November 1 in each year, which interest payments shall be evidenced by proper interest coupons attached to each of said bonds, and severally maturing on said interest payment dates, both principal and interest.being payable at the office of the City Treasurer in the City of Evanston, State of Illinois,, Section 2. The said bonds shall be signed by the Mayor of the said City of Evanston, and attested by the City Clerk of the said City under its corporate seal, and the interest coupons the3eto attached shall be signed and attested by said officials, respectively, by their fac simile signatures and said officials shall, by the execution of said bonds, adopt as and for their respective proper signatures, theri respective fac simile signatures appearing upon said coupons. Said bonds and coupons shall be issued substantially in the following forms: (Form, of Bond) UNITED STATES OF AhMICA STATE OF ILLINOIS COUNTY OF COOK. LA .Z _ _ CITY OF EVANST C LAKE FRONT LANDS ACQUISITION BOND NO 910000 KNOW ALL MEN BY THESE PRESENTS: That the City of Evanston in the County of Cook and State of Illinois, acknowledges it- self to owe and for value received hereby promises to pay to bearer the sum of One Thousand Dollars ($1000) on the first day of May, A.D. -19�, together with interest on said sum from the date hereof until paid, at the rate of four and one-half (4*) per cent per annum payable semi-annually on the first day of May and the first day of November in each year upon presenta- tion and surrender of the annexed interest coupons as they severally become due and payable. Both principal and interest are hereby made payable in lawful money of the United States at the office of the City Treasurer in the City of Evanston, State of Illinois. For the prompt payment of this bond, both principal and interest, as aforesaid, at maturity, the full faith, credit and resources of said City are hereby irrevocably pledged. This bond is one of a series of bonds issued by said City 36 2for the purpose of paying the necessary expenses of acquiring for park purposes by purchase or condemnation private lands bordering on Lake Michigan including riparian rights; part of said lands lying east of Sherjaan Square` and between Keeney Street and South Boulevard, and the remainder thereof lying east of Sheridan Road and between South Boulevard and the north line of Calvary Cemetery extended east t ' pursuant to and in all respects in compliance with an Act entitled "An Act to provide for the incorporation of Cities and Villages", approved April loth, 1872, and all acts amendatory thereof, and an ordinance duly passed by the Council of said City,and submitted to and approved by the voters of said City at an election duly called anA held for that purpose. And it is hereby certified and recited that all acts con- ditions and things required by the Constitution and laws of the State of Illinois to exist or to be done, precedent to and in the issuance of this bond have existed and have been properly done, happened and been performed in regular and due form as required by law; and that the indebtedness of said City, in- cluding this bond, does not exceed the constitutional or statutory limitations; and that provision has been made for the collection of a sufficient direct annual tax in addition to all other taxes, on all the taxable property in said City to pay the interest hereon as the same falls due and also to pay and dis- charge the principal hereof at maturity. IN WITNESS YJIiE'REOF, The City of Evanston, by its Council has caused its corporate seal to be hereto affixed and this bond tq be signed by its Mayor and attested by its City Clerk, and the coupons hereto attached to be signed and attested by said officers respectively, by their reppective fac simile signatures, and said officers do, by the execution `hereof, adopt as and for their re- spective proper signatures, theri respective fac simile signatures appearing ,on said coupons, all as of the first day of May, 1923. Attest: City Clerk , (Form of Coupon) No Mayor E On the first day of , 19 , the City of Evanston, Cook County, Illinois, will pay to bearer Dollars at the office of the City Treasurer in the City of Evanston, State of Illinois, for interest due on, that date on its Lake Front Lands. Acquisition Bond dated May 1, 1923, No . Attest: City Clerk. Mayor Section 3. That, in order to provide for the collection of a direct annual tax sufficient to pay the interest on said bonds as the same falls due, and to pay and discharge the principal thereof at maturity, there be and there is hereby levied upon all the taxable property within said City in each year while any of said bonds are outstnading, a direct annual tax sufficient for that purpose, and that; there be and there is hereby levied upon all the taxable property within said City, and in addition to all other taxes, the following direct annual tax, to -wit: For the year 1923, a tax sufficient to` raise the sum of *13,750 to pay principal `and interest; For the year 1924, a tax sufficient tor aise the sum of 013,435 to pay principal and interest; For the year 1925, a tax sufficient to raise the sum of §13,120 to pay principal and interest; For the year 1926, a tax sufficient to raise the sum of ;12,805 to pay principal and interest; IZ0198 For the year 1927, a tax sufficient to raise theme 63 sum of *12,490 to pay principal and interest; J For the year 1928, a tax sufficient to raise the sum of *12,175 to pay principal and interest; For the year 1929, a tax sufficient to raise the sum of 9110860 to pay principal and interest; For the year 1930, a tax sufficient to raise the sum of "1, 545 to pay principal and interest; For the year 1931, a tax sufficient to raise the sum of 911,230 to pay principal and interest; For the year 1932, a tax sufficient to raise the sum of §10,915 to pay principal and interest; ` For the year 1933, a tax sufficient to raise the sum of 010,600 to pay principal and interest; For the year 1934, a tax sufficient to raise the sum of f10,285 to pay principal and interest; For the year 1935, a tax sufficient to raise the BUM of V9,970 to pay principal and interest; For the year 1936, a t ax sufficient to raise the sum of V9,655 to pay principal and interest; For the year 1937, a tax sufficient to raise the sum of 09, 340 to pay principal and interest; For the year 1938,` a tax sufficient to raise the sum of §9, 025 to pay principal and interest; For the year 1939, a tax sufficient to raise the sum of $8,710 to pay principal and interest;. For the year 1940, a tax sufficient to raise the sum of *8,395 to pay principal and interest,, For the year 1941, a tax sufficient to raise the sum of #8,080 to pay principal and interest; For the year 1942, a tax sufficient to raise the sum of *17, 765 to pay the principal and interest; That the interest and principal maturing at any time when there are not sufficient funds on hand to pay the same* be promptly paid out of the general fund of the City and the said fund reimbursed from the taxes hereby levied for such purpose, when the same are collected. Section 4. That forthwith, upon the approval of this ordinance by the voters of said City, a copy of this ordinance, certified by the Clerk of said City, which Clerk in and by his certificate certifying said copy, shall certify to the approval of this ordinance by the voters of said City, shall be filed with the County Clerk -of the County of Cook, who shall in and for each of the years 1923 to 1942s inclusive, ascertain the rate per cent required to rpoduce the aggregate tax hereinbefore levied for each of said years respectively, and extend the same for collection on the Tax Books in connection with other taxes levied in each of said years respectively, in and by said City for general corporate purposes of said City, and in each of said years such annual tax shall be levied and collected by gaid City in like manner as taxes for general purposes for each of said years are levied and collected, and when collected, said taxes shall be used for the purpose of paying principal and interest upon the bonds hereinbefore described as the same shall mature. ` Section 5. That all ordinances, resolutions and orders or parts thereof, in conflict with the provisions of this ordinance, be and the same are hereby repealed. Adopted by the City Council of the City of Evanston on 'the 13th day of March A.D. 1923s Approved: March 13, 1923. John F. Hahn, H.P. Pearsons, City Clerk. Mayor* l�Z/ l �� 364 AN ORD INANCE providing for borrowing money and issuing bonds of the City of Evanston, Cook County, Illinois, to the amount of thirty thousand Dollars (;30.,000) to acquire lands for park purposes in the Sixth ward, and providing for the collection of a direct annual tax for the payment of the principal and interest of said b onds . < HE IT ORDAINED, by the City Council of the City of Evanston, Cook County, :Illinois: Section 1. That for the purpdse of paying for a general improvement in the City of Evanston, Illinois,,being the necessary costs and expenses of acquiring lands for park purposes in the Sixth Ward of said City, bonds --of the said City of Evanston to be issued to the: amount of Thirty Thousand Dollars, ($30,000) in the denomination of One Thousand Dollars($1000) each, numbered from one (1) to thirty (30) inclusive,,bearing date of May 1, 1923, and becomih due and payable in numerical order, Three Thousand Dollars ($3,0001 on May 1, 1924, and Three Thousand Dollars ($3000) on May first of each of the years, 1925 to 1933 inclusive. Said bonds shall bear interest at the rate of four and ones -half (4*) per cent per annum, payable semi-annually on May 1 and November 1 in each year, which interest payments shall be evidenced by proper interest coupons attached to each of said bonds, and seve2ally maturing on said interest payment dates, both principal and interest being payable at the office of the City Treasurer in the City of Evanston, State of Illinois. Section 2. The said bonds shall be signed by the Mayor of the said City of Evanston, and attested by the City Clerk of the said City under its corporate seal, and the interest coupons thereto attached shall be signed and attested by said officials, respectively by their fac simile signatures and said officials shall, by the execution of said bonds, adopt as and for their respective proper signatures, their respective fac simile signatures appearing upon said coupons. � Said bonds and coupons shall be issued substantially in the following forms: (Form of Bond) UNITED STATES OF AMERICA STATE OF ILLINOIS COU14TY OF COOK CITY, OF EVANSTON SI&H WARD PARK LANDS ACQUISITION BOND NO 41,000. KNOW ALL MEN,BY THESE PRESENTS: That the City of Evanston in the County of Cook and State of Illinois, acknowledges itself to owe and for value received hereby promises to pay to bearer the sum of One Thousand Dollars (01000 ) on the first day of May, A.D. 19_ together with interest on said sum from the date hereof until paid, at the rate of four and one-half (4t) per cent per annum, payable semi-annually on the first day 'of May and the first day of November in each year upon presentative and surrender of the annexed interest coupons as.`they severally become due and payable. Both principal and interest are hereby made payable in lawful money of the United States at the office of the City Treasurer in the City of Evanston, State of Illinois. For the prompt payment of this bond, both principal and interest, as aforesaid; at maturity, the full faith, credit and resources of said City are hereby irrevocably pledged. ` This bond is one of a series of bonds issued by said City for the purpose of paying the necessary expenses of acquiring lands for park purposes in the Sixth Ward of said City, pursuant fo and in all respects in compliance with an Act entitled "an Act to provide for the incorporation of Cities and Villages", approved April loth, 1872,' and all acts amendatdry thereof, and an ordinance duly passed by the Council of said City and submitted to and approved by the voters of said City at an election duly called and held for that purpose. ` And it is hereby certified and recited that all acts, conditions and things required by the Constitution and laws of the State of Illinois to exist or` to be done precedent to and in the issuance of 1Z 19198 this bond have existed and have been properly done, happened 365 and been performed in regular and due form as required by law, and that the indebtedness of said City, including this bond, does not exceed -the constitutional or statutory limitations; and that provision has been made for the collection of a suf- ficient direct annual tax in addition to all other taxes, on all the taxable property in said City to pay the interest hereon as the same falls due and also to pay and discharge the principal hereof at maturity. IN WITNESS WHEREOF, The City of Evanston, by its Council, has caused its corporate seal to be hereto affixed and this bond to be signed by its Mayor and attested by its City Clerk, and the coupons hereto attached to be signed and attested by said officers respectively, by their respective fac simile signatures, and said officers do, by the execution hereof, adopt as and for their respective proper signatures, their respective fac simile signatures appearing on said coupons, all as of the first day of May, 1923. Attest: City Cle rk (Form of Coupon) NO Mayor On the first day of , 19 , the City of Evanston, Cook County, Illinois, will pay to bearer Dollars at the office of the City Treasurer in the City of Evanston, State of Illinois, for interest due on tha% date on its $ixth ward Park bands Acquisition Bond dated May 1, 1923, NO 0. Attest City Clerk Mayor Section 3. That, in order to provide for the collection of a direct annual tax sufficient to pay the interest on said bonds as the same falls due, and to pay and discharge the principal thereof at maturity, there be and there is hereby levied upon all the taxable property within said City in each year while any of said bonds are outstanding, a direct annual tax sufficient for that purpose, and that there be and there is hereby levied upon all the taxable property within said City, and in•addition to all other taxes, the following direct annual tax, to -wit: ,For the year 1923, a tax sufficient to raise the sum of V4,350 to pay principal and interest; For the year 1924, a tax sufficient to raise the sum of §4,215 to pay principal and interest; For the year 1925, a tax sufficient to raise the sum of §40080 to pay principal and interest; For the year 1926, a tax sufficient to raise the sum of ;3,945 to pay principal and interest; For the year 1927, a tax sufficient to raise the sum of 43,810 to pay principal and interest.; For the year 1928, a tax sufficient to raise the sum of 430675 to pay principal and interest; For the year 1929, a tax sufficient to raise the sum of V3,540 to pay principal and interest; For the year 1930, a tax sufficient to raise the sum of §3,405 to pay principal and interest; For the year 1931, a tax sufficient to raise the sum of43,270 to pay principal and interest; 366 For the year 1932, a tax sufficient to raise the sum of 43,135 to pay principal and interest; That the interest and principal maturing at any time when there are not sufficient funds on hand to pay the same, be promptly paid out of the general fund of the City and the said fund reimbursed from the taxes hereby levied for such purpose, when the same are collected. Section 4. That forthwith, upon the approval of this ordinance by the, voters of said City, a copy of this ordinance certified by the Clerk of said City, which'Clerk in and by his certificate certifying said copy, shall certify to the approval of this ordinance by the voters of said City, shall be filed with the County Clerk of the County,of Cook, who shall in and for each of the years 1923 to�1932, inclusive, ascertain the rate per cent required to produce the aggregate tax hereinbefore levied for each of said years respectively, and extend the same for collection on the Tax Books in connection with other taxes levied in each of said years respectively, in and by said City for general corporate purposes of said City, and in each of said years such annual tax shall be levied and collected by said City in like manner as taxes for general purposes for each of said years are levied and collected, and when collected, said taxes shall be used for the purpose of paying principal and interest upon the bonds hereinbefore described as the same shall mature. Section 5. That all ordinances, resolutions and orders, or parts thereof, in conflict with the provisions of this ordinance, be and the same are hereby repealed. Adopted by the City Council of the Uity of Evanston on the 13th clay of March A.D. 19239 Approved: March 13, 1923. John F. Hahn, H.P.•Pearsons, City Clerk. Mayor* - - - - - - - - - - BE IT 0 RDAI14ED BY THE CITY COUNCIL OF THE CITY OF EVANSTON, ILLINOIS: Section 1. 'That the city of Evanston shall equip, conduct and maintain the following named and located playgrounds for the benefit of the inhabitants of said City, at a cost of not to exceed 1-1/3 mills on each dollar of assessed valuation of all taxable property within the corporate limits of said City: MASON PARK - bounded by Church Street, Florence Avenue, Davis Street and Dewey Avenue. ACKERMAN;PARK - bounded by Central Street, elm Avenue, McDaniel Avenue and public alley between Central Street and Harrison Street. ELLIOT PARK - Bounded by Hamilton Street, Lakeshore Blv. Greenleaf Street and Lake Michigan. LAKE FRONT PARK (1) - Bounded by University Place, Greenwood 131v., Sheridan Road and Lake Michigan. LAKE FRONT*PARK (2) - Bounded by Greenwood Blv., Lakeshore Blv. , liamilt.on Street and Lake Michigan, BOLTWOOD PARK - Bounded by Main Street, Florence Avenue, Dodge Avenue and Lee Street. Section 2:. This ordinance shall be in effect from and after its passage and approval and upon the adoption thereof by a majority of the voters of the City of Evanston voting upon the question of such adoption -at the regular election to be held in said City on April 3rd, 1923. Adopted by the City Council of the City of Evanston on the 13 th day of March A.D. 1923. Approved: March 13, 1923. John F. Hahn, H.P. Pearsons, City Clerk Mayor . iZ0198 RECONL=ATION, ESTIMA`rE AND ORDINANCE 367 RECO"HEMATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: We herewith submit an ordinance providing that the public alley extending from the north lot line of KEENEY STREET to the south lot line of KEDZIE STREET in Block 3, Kedzie and Keeney's Addition to Evanston in the City of Evanston, County of Cdok, State' of ' Illinois; be improved by' grading, paving to a width of nineteen (19) feet with a concrete pavement six (6) inches in thickness, composed of Portland cement, sand and gravel, mixed by volume in ratios'of'l:2:3'resp octively, with sufficient clean water to give proper plasticity, using a botuminous filler ttrip for expansion joints in pavement; con- struoting necessary surface'drainage'sevier'of'vitrified, salt glazed, tile pipe having an internal diameter of nine (9) inches brick catch basins, six (6) inch internal diameter, vitrified, salt galzed,.tile pipe catch basin connections to surface drainage sewer and brick manholes, adjusting present macadam paveffient adjoinifig dnd'coftnedting With the proposed improvement; together with an estimate of the cost of said improvement and recoffinen'd the passage of said ordinance and the making of the improvement contemplated therein. Respectfully submitted, H.P. Pearsons, V m. Blanchard, Hal W. Smith. Board of Local Improvements of the City of Evanston, Illinois. Dated, Evanston, Illinois. March 20, 1923. EST MATE OF ENGINEER OF BOARD OF LOCAL, IMPROVEMENTS To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that the Public Alley extending from the north lot line of KEENEY STREET to the south lot line of KEDZIE STREET in block 3. Kedzie and Keeney's Addition to Evanston, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving to a width'of nine- teen (19) feet vrith a concrete pavement six (6) inches in thickness, composed of Portland cement, sand and gravel, mixed by volume in ratios of 1:2:3 respectively, with sufficient clean water to give proper plasticity, using a bituminous filler ship for expansion joints in pavement, constructing necessary surface drainage sewer of vitrified, salt glazed, tile pipe having an internal diameter of nine (9) inches, brick catch basins, six (6) inch internal diameter, vitrified, salt glazed, tile pipe catch basin connections to`surface drainage sewer and brick manholes, adjusting present macadam pavement adjoin- ing and connecting with the proposed improvement; and presented to the City Council of the City of Evanston a recommendation that such improvement be made, I herewith submit an estimate of the cost of said improvement, as described in said resolution, including labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment, as provided by law, viz: ESTIMAITE OF COST 680 euo yds. of grading ® $1.60 per cu. yd. . . . V 1,088*00 2300 sq, yds. of Portland cement concrete paving complete in place @ S2.75 per sq. yd. 6,325.00 625 lin. f t. of bituminous filler strip for expansion joints in paving, laid complete in place 12¢ per lin. f t. . . . 75.00 840 lin. ft. of 9" internal diameter, vitrified, salt glazed, tile pipe surface drainage sewer (average depth of cut six and one-half (6-J) feet) laid complete in place including ternching and back filling 8 :p2.35 per lin. ft. . . 0 1,974.00 • ..3 brick catch basins including cast iron covers plank bottoms, excavation and back filling complete in place ® 980.00 each . . .. $ 240.00 30 lin. ft. of 6" internal diameter, vitrified, salt glazed, tile pipe, catch basin connec- tions to surface drainage sewer, average depth of cut five (5) feet, including trench- ing and back filling laid complete in place ® 41.00 per lin. ft. . . 0 . . 0 0 . . 30.00 3 brick manholes, including cast iron covers, excavation and back filling, complete in place ® *80.00 240.00 98 sq. yds. of macadam paving adjusted ® $1.20 per sq. yd. . . . . . . . . . . . . 117.60 For lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment therefor, not to exceed six (6) per centum of the above, to -wit:` 910,089.60 . . . . . . . . . 0 . . 605.37 Total 10694.97 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improve- ment and the lawful expenses attending the same. Dated, Evanston, Illinois, March 20, 1923. Wm. Blanchard, 2ngineer of the Board of Local Im- provements of the City of Evanston, Ills* AN ORDINANCE Providing that the Public Alley, extending from the north line of KEENEY STREET to the south line of KEDZIE STREET, in Block three (3), Kedzie and Keeney's Addition to Evanston, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, paving with a Portland Cement Concrete pavement, using a bituminous filler strip for expansion joints in pavement, con- structing necessary surface drainage sewer, catch basins, catch basin connections to surface drainage sewer and manholes, ad- justing macadam paving adjoining and connecting with the proposed improvement. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: Section 1. That a local improvement shall be made within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local im- provement is as follows, to -wit: That the 'Public Alley, extending from the north line of KEENEY STREET to the south line of KEDZIE STREET, in Block three (3), Kedzie and Keeney's Addition to Evanston, in the City of Evanston, County of Cook, State of Illinois, be and the same is hereby ordered improved as follows: Location of Pavement The center line of the pavement herein provided to be con- structed shall coincide with the center line of the alley within which said pavement is included. Width of Pavement The width of the pavement herein provided to be constructed shall be nfnefeeri (19)' feet. Grade of Pavement The grade `of the upper surface of the finished pavement herein provided to be constructed is hereby established as Sollows, measured in feet and decimal parts of a foot above the datum of the City of Evanston, to -wit: IZ0198 Transverse Section of Alley Outer Edges of Pavement At the north line of Keeney Street 16.02 At a point ninety-four (94) feet north of the north line of Keeney Street 15.50 At a point two hundred twenty-f our (224 ) feet north of the north line of Keeney Street 16.10 At a point three hundred ninety-one(391) feet north of the north line of Keeney Street. 15.20 At a point six hundred thirty (630) feet north of the north line of Keeney St. 16.90 At a point seven hundred forty-eight (748) feet north of the north line of Keeney Street. 15.95 At a point eight hundred sixty-one(861) feet north of the north line of Keeney Street 16.70 At the south line of Kedzie Street 16.14 ALLEY PAVING 3: R Center ine of Pavement 15.7`l 15.25 15.85 14.95 16.65 15.70 16.45 15.89 The grade of the center line and outer edges of the pavement at intermediate points shall be respec- tively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane of the low water mark of Lake Michigan in the year A. D. 1847, as established by the Trustees of Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, locate_ d at the northwest corner of Davis street and Sherman Avenue, in said City of Evans :on. The upper surface of the pavement herein provided to be constructed, when completed, shall conform to the arc of a circle passing through the respective grade points in the center line and at the outer edges of the pavement, and shall be true and symmetrical. GRADING The alley herein provided -to be improved shall be cleaned prior to the paving thereof, in a thorough manner of all deteriorated planking, blocking or other debris. The soil of the roadway shall then be ex- cavate,i or filled upon with other suitable soil, as the case may be, to such depth and shape as will bring the upper surface of the finished pavement, when constructed as hereinafter specified, to the elevations and grades hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable self- propel-Jng roller or flooding with water as the case may require. Depressions or holes appearing as the pre- paration of the sub -grade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left in the sub -grade, shall be removed by the contractor without extra charge. CONCRETE PAVEMENT —ALLEY Ufon the subgrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement, compoEed of Portland cement, sand and gravel mixed by volume in ratios of one part of cement, two parts sand, and three parts of gravel with sufficient clean water to give proper plasticity and in the manner here- inafter set forth. The concrete shall be spread on the sub -grade in such quantity and to such form that af- ter being compacted in place it shall have a uniform thickness of six inches. The Portland cement to be used in snaking this concrete pavement shall be of such quality that repre- sentative samples collected from shipments made for the job shall be capable of passing the following tests for fineness, soundness, initial setting, and tensile strength, to -wit: Fineness. The cement shall be ground so that 92 % will pass through a standard sieve, having 10,000 meshes and 7517o will pass through a sieve having 40,000 meshes per square inch. So-andness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at. the cer-ter and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no check- ing, warping or swelling. Broken briquette of the neat cement which have remained in air one day and in water ;ix days shall likewise withstand the steaming and boiling specified for the neat pat. Setting. The cement when mixed with twenty-eight per cent (by weight) of water, shall not take initial ;et in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ........................................................ 175 lbs. 7 days (1 day in moist air, 6 days in tivater)................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) .................................. 600 lbs. 3"70 One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. The sand to be used for making the concrete shall be free from dust, clay, loam, vegetable or other deleterious matter. The grains of sand shall be angular and shall range in size from one -quarter inch down to the finest; but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind - drifted sand shall not be used. The sand shall be of such quality that the mortar composed of one part of the cement hereinbefore specified and three parts of sand, by weight, when made into briquettes, will de- velop a tensile strength at least equal to the strength of a mortar of the same consistency and proportion made with the same cement and Standard Ottawa sand. In no case shall the sand, when used for this concrete, contain frost or lumps of frozen matter. The gravel to be used in making this concrete shall be clean, hard, free from dust, loam, vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable sizes grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (1-4) inch. In no case shall the gravel when used for this concrete contain frost or lumps of frozen matter. The sand and gravel shall be clean when delivered on the job, and shall be kept clean until used. The method used for measuring the ingredients in the concrete shall be one that will insure a uniform proportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be considered one cubic foot. The concrete shall be mixed in a batch machine mixer of a type that will insure a uniform distribution of the ingredients throughout the mass. Ingredients of the concrete or mortar shall be mixed to the de- sired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in color, and homogeneous. Clean water, free from oil, acid, alkali or vegetable matter shall be ad- mitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the gravel from the mortar. The concrete shall be handled rapidly from the mixer to its place in the pavement. Successive batches shall be deposited in place on the sub -grade in a continuous operation so that sections of the pavement be- tween expansion joints, hereinafter specified, shall be entirely completed and without the use of inter- mediate cross forms or bulk -heads. Concrete shall not be retempered or used that has partially hardened. The concrete shall be compacted and brought to the established grade and shaped with a template or straight edge, and shall be brought to a comparatively even surface. After the concrete has been so brought to grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even sur- face. Said roller shall not be less than five feet in length, and not less than eight (8) inches not more than twelve (12) inches in diameter and weighing not less than one hundred pounds (100 lbs.). The roller shall be operated across the ,pavement from side to side of same, by means of ropes attached to each side of the roller, at such angle with the center line of the pavement as to permit the roller to advance along the pavement two feet for each time across. After the roller has covered a given area in the manner de- scribed, the same area shall be similarly rolled by the roller for not less than three (3) times at intervals of fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may be necessary to remove excess water. After the rolling has been completed the pavement shall be finished by two (2) applications of a belt made of canvas, not less than six (6) inches wide and not less than two (2) feet longer than the width of the pavement. For the first application, vigorous strokes at least twelve (12) inches long shall be used. The longi- tudinal movement of the belt along the pavement shall be very slight. The second application of the belt shall be immediately after the water glaze or sheen disappears, and the stroke of the belt shall be not more than four (4) inches, and the longitudinal movement shall be a continuous forward movement. A suitable bridge to span the width of the pavement shall be used to finish the joints, no part of which shall be in contact with the finished work. A notched straight edge ten (10) feet in length shall be used for testing each transverse joint, prior to and subsequent to final finishing. The straight edge shall be placed over the joint, -parallel to the center line of the pavement and moved across from curb to curb. When the surface of the concrete upon testing shows to be high or low, concrete will be added or removed to bring the surface its true shape. The concrete adjoining transverse joints shall be dense in character and after rolling shall be finished with a wood float, which is divided through the center and which will permit finishing on both sides of the filler at the same time. The finished surface of the concrete shall not vary more than one -eighth (1-8) of an inch from a two foot straight edge placed upon the concrete in any position. Workmen shall not walk on the freshly laid concrete; and no one shall be allowed on the concrete after it has been worked into form and position with a template or straight edge, until it has thoroughly hardened. 1119i98 271 y EXPANSION JOINTS Transverse expansion joints not less than three -eighths (31S) inch or .more than one-half (112) inch in width shall be placed across the pavement at right angle to the center line of the roadway; spaced so as not to exceed thirty-three and one-third (33 1�3) feet apart. All expansion joints shall extend through the entire thickness of the pavement. In these expansion joints there shall be placed a prepared strip of bi- tuminous filler of the thickness hereinbefore specified for expansion joints and extending from the bottom of the pavement herein specified to the upper surface of the finished pavement. The upper edges of all, joints and the upper outer edges of the pavement shall be neatly troweled to a radius of one -quarter (T/q)' inch. All metal, manholes, catch basin covers, and other fixed objects shall be separated from the concrete pavement by a joint filler of the same character as hereinbefore specified for expansion joints; which joint filler shall extend through the entire thickness of the pavement. PROTECTION MINIMM As soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be spray- ed with water; and it shall be kept thoroughly wet for at least ten days. As soon as it can be done without damage to the concrete, the surface thereof, during hot and dry weather and if unshaded shall be covered with not less than one inch of earth, sawdust, straw or other suitable and available material, which cover- ing shall be kept wet for at least four days after being placed. In dry and hot weather freshly laid con- crete shall be protected by a canvas covering until it can be sprinkled or covered, as specified. The water and concrete aggregates shall be heated if at any time during the progress of the work the temperature is, or from weather reports will likely during the next twenty-four hours drop to (35) thirty- five degrees Fahrenheit. The concrete shall be protected against freezing for at least ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established line, and their upper edges shall conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have previously been used. The pavement shall be thoroughly cleaned and open to the public as soon as the cement has set suffici- ently to receive the traffic without injury to the surf ace or body of the concrete. SURFACE DRAINAGE SEWER4j For the purpose of carrying off storm waters from the surface of the pavement herein provided to be constructed,; surface drainage sewers of vitrified, salt glazed, tile pipe shall be laid as hereinafter specified. Said sewer# shall be laid in open trenches in the ground in such manner as to conform to the elevations, lines and grades hereinafter specified. The pipe used in the construction of said sewer# shall be of the type known as "Bell and Spigot" having an internal" diameter of nine (9) inches, the metal of which pipe shall have a thickness of thirteen -sixteenths (13 f 16) of an inch and shall be not less than two (2) feet in length, cylindrical, straight, smooth, thoroughly vitrified, salt glazed, free from cracks or blisters and of the best quality and workmanship. The joints between the pipes shall be securely sealed with: a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1/) i parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The joints between said pipes) shall be wiped and pointed inside the pipes. The interior of the pipes shall be kept free from dirt or refuse of'everyl description and shall be left clean at the completion of the work. The open trenches excavated to receive said sewers shall be made at least twelve (12) inches wider than the ex-' terior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing joints.: The materials excavated shall be kept compactly along the sides of the trench and shall be backfilled as soon as practic- able in order to occasion the least possible inconvenience to the public in use of the street or alley as the case may be. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. The open and unconnected ends of said sewer* shall each be securely closed with a salt glazed, vitrified tile disc, and sealed in the manner above specified for joints between pipes. Said sewer or sewers as the case may be shall be laid as follows, to -wit: In a nd along the center line of said Public Alley fron and connect- ing with the sewer now in place along the center line of Keeney Street, north to a point seven hundred forty-eight (748) feet north of the north line of Keeney Street. The internal diameter of this sewer shall be nine (9) inches. At its connection with the aforesaid sewer, the elevation of the inside bottom of this sewer shall be seven and eighty- five hundredths (7.85) feet above the datum plane hereinbefore defined and the grade thereof shall rise thence at a uniform rate to an ele- vation of eleven and five tenths (11.5) feet above said datum at its terminus. 37'2 CATCH BASINS For the purpose of receiving storm waters from the surface of the pavement herein provided to be con- structed three catch basins shall be constructed at the necessary points along the center line of said pavement. Said Catch basins sholl be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catch basins, when in place, to the upper surface of the proposed pavement. Said catch basins shall be cylindrical in shape having an internal diameter of thirty-six (36) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by means of three (3) header courses of brick, laid endwise and horizontally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catch basins. Said catch -basins shall have walls eight (8) inches thick built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch - basins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 112) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch -basins shall each rest on a solid bottom of two (2) inch pine planks, laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure.fifty-four (54) inches in diameter and shall have its upper side placed four(4) feet below the upper surface of the brick wall for said catch -basin. Said catch -basins shall be connected with the sewer, or sewers as the case may be, now existing, or herein provided to be constructed, as the case may be, in and along the center line of the said pavement, along which center line and over said sewer or sewers, the respective catch -basins are to be constructed. Said catch -basins shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed tile pipe having an internal diameter of six (6) inches and of the type known as "Bell and Spigot," the metal of which pipes shall be three -fourths (314) of an inch in thickness and shall be not less than two (2) feet in length. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipe shall be se- curely sealed with a mortar of the quality herein required for brick walls in catch -basins. Each catch -basin connection shall start in a six-inch "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the said sewer at a point not less than eight (8) feet in advance of the center of the catch -basin measured along and in the down stream direction of the sewer. The pipe shall be laid true to line and grade and the connection shall enter the catch -basin through the brick wall thereof at a point two and one-half (2 112) feet above the top of the plank bottom of said catch -basin. The pipe entering the catch -basin through the brick wall thereof, shall be an elbow with the bell end turned downward inside the catch -basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be back -filled as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the alley. The trenches shall be promptly back -filled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch -basins shall each be equipped and fitted with a circular cast iron grate cover weighing not less than three hundred and sixty (360) pounds. Said grate to be so constructed as to freely admit water from the surface of the pavement to the catch -basin) and having a vertical height of nine (9) inches, the opening in said cover shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) inches at the top thereof. The diameter of the lid or grate for said covers shall be 22 314 inches. Said catch -basin covers herein provided to be furnished and set shall rest on the walls of the catch -basins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catch -basins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the upper surface of the pavement at points where said catch -basins are located. Said catch -basins herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: One at a point ninety-four (94) feet north of the north line of Keeney St. One at a point three hundred ninety-one (391) feet north of the north line of Keeney St. One at a point seven hundred forty-eight (748) feet north of the north line of Keeney Street. IZ 0198 MANHOLES 3'73 Three brick manholes shall be built of hard burned sewer brick, upon the sewer or sewers, as the case may be, hereinbefore provided to be constructed and shall be located at the points hereinafter specified. Said manholes shall be placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbefore specified in such manner as to bring the tops of the iron covers herein required for said manholes when in place to the upper surface of the proposed pavement. Said manholes shall be cylindrical in shape having an internal diameter of thirty- six (36) inches at the upper surface of the base and upward to the lowest header course being uniformly drawn in to twenty-four (24) inches in diameter at the top of the masonry by means of six (6) header courses of brick laid end- wise and horizontally, the diameter being decreased uniformly by each course to fit the iron covers hereinafter specified to be furnished and set on the walls of said manholes. The walls of said manholes shall rest upon the base thereof without offsetting and shall be eight (8) inches thick, built (except as above specified for header courses) of alter- nate vertical and horizontal courses of brick. The brick used in the construction of said manholes shall be thoroughly wetted with water before being placed and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1;/) parts of clean sharp. sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manholes shall begin at a point five (5) inches below the outside bottom of the sewer hereinbefore specified and shall extend upward to said outside bottom and along the sides -of said sewer to a point midway between the top and bottom of said sewer, said base to be circular in form, the diameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manholes shall be neatly removed leaving the lower half thereof to form the invert of the manhole. Said manholes shall each be equipped with a circular castiron cover having a tight lid, weighing not less than five hundred and forty (540) pounds, of the type known as "Chicago City Standard Heavy" having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two (22) and three - fourths (,) inches at the top thereof. Said manhole covers herein specified to be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the tops of the walls of said manholes, which walls shall be built to such height as will bring the tops of the covers when set in place, to the surface of the pavement hereinbefore specified. Said manholes herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: One at the center line of Keeney Street. Oneat a point two hundred twenty-two (222) feet north of the north line of Keeney Street. One at a point four hundred eighty-one (481) feet north of the north line of Keeney Street. ADJUSTMT OF PRESENT 16ACADAIIS PAVING The present macadam paving where the same adjoins the pro- posed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and quality composing said macadam paving and having been thoroughly compacted it shall form a base or foundation for a bituminous macadam pavement to be placed thereon. The upper surface of said base or foundation when completed shall be two (2) inches below the finished grade of the proposed improvement where same adjoins said macadam paving. Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard broken limestone ranging in size from a maximum dimension of two inches to a m nimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of two (2) inches thereof being'spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished and the layer thereof is dry, there shall be applied to the limestone (at a temperature not less than 250 nar more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one (1) gallon thereof being evenly spread on and used in each and every square yard of paving, in addition to the squee-gee or second application coat herein- after required. Immediately after, and progressing with, the application 274 of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size ranging from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diameter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately. following the spreading of these limestone screenings the paving so covered, shall be given a thorough rolling with a roller of the weight and type hereinbefore named. This rolling shall con- tinue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the paving shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be applied to the surface a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread, as to insure not less than three-quarters (-J) gallon thereof being evenly spread and used on each and every square yard of paving: Immediately after the second application of asphaltic cement is made and spread (and progressing therewith) there shall be spread ` on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of paving. A final rolling of the paving shall closely follow the spread- ing thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the pavement is thoroughly compacted, and brought to a surface, free from de- pressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following requirements and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty- five per cent refined, solid natural asphalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing in- dustries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so prepared for use as to best adapt it to the climatic and traffic conditions of the roadway on which it is to be used. (2) Its sp e6ific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3) It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 grams for one minute. pro. (4),It shall be 13fdotically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be present in homogeneous solution, no granular constituent being present. (5) It must not flash below 350 degrees Fahrenheit when tested in a hew York state closed oil tester. 1Z 19198 (6) 50 grams of the cement upon being maintained at a 375 5 uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of theresidue shall not be less than one-half that tested as above described. (7) It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95%o (8) Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98*% shall be soluble in cold carbon tetrachloride. (9) The bitumen of the cement shall be soluble in petroleum naptha, at the air temperature to the extent of not less than 72 per cent (10) Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Sajd sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (60) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit: Fineness. The cement shall be so ground that 92 Jo will pass through a standard sieve, having 10,000 meshes and 757o will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 clays in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 clay in moist air, 27 days in water) ................................. 275 lbs. 3"76 The briquettes shall show no retrogression in strength within the .period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The tile pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said 1pipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: inch. For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both .hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of six htmdred five and thirty—seveA hundredths dollars ($ 605.37 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of six hundred five and thirty seven hundredths dollars ($ 605.37 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into f ive installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section S. And for the purpose of anticipating the collection of the second and subsequent installments of f , j said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the -Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Cleric under the corporate seal of ! the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8.- This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 20th day of March A.D. 1923. Approved: March 21, 1923. John F. F-a.hn, N.P. Pearsons, City Clerk Mayor 1Z19198 377 BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVA143TON: Section 1. That the Public Alley ( twenty (20) f eet in width) in Block four (4) also the South One Hundred Thirty -Eight and five -tenths (138.5) feet of the Public Alley (twenty (20) feet in width) in Block five (5), all in the Austin Ridge Sub- division, a subdivision of that part of the North Eleven Hundred and ninety-four (1194) feet of Section Thirty (30), Township forty-one (41) :North, Range fourteen (14) East of the 'Third (3rd) Principal Meridian, lying west of Ridge Road, in the City of Evanston, County of Cook, State of Illinois, the plat of said Austin Ridge Subdivision having been filed for record October 8th, 1874, in the Office of the Recorder of Deeds of Cook County, Illinois, and entered in Book Eight (8) of Plats, Page forty-eight (48) as Document 194571 be and the same is hereby vacated, as the same is no longer required for Public use, and the interests of the City of Evanston will be subserved by such vacation. Section 2. The plat hereto attached indicating by the words "Public Alley Hereby Vacated" the property vacated is hereby approved and made a part of this ordinance, and the City Clergy: is hereby directed to certify the same as such. Section 3. This ordinance shall be in full force and effect from and after its passage and approval and the filling in the office of the Recorder of Deeds of Cook County, Illinois, of a certified copy of this Ordinance, to which is attached a plat showing property vacated. Adopted by the City Council of the City of Evanston on the 4th day of April A.D. 1923. Approved: April 5, 1923. John F. Hahn, H.P. Pearsons, City Clerk Mayor. - - - - - - - - - - BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: Section 1. That the plat of Whyte and Bell Construction Company's Resubdivision of the South eight (8) feet of lot one(: lots two(2) to nineteen (19) (both inclusive) and lots twenty(20i to thirty-one (31) (both inclusive), all in Block two (2), lots five (5) to thirty-two(32) (both inclusive) in Block three (3), lots one ffl to twelve(12 (both inclusive),in Block four (4), lots one to -twelve (12) (both inclusive) in Block five (5) and lot three (3) in Block six (6), all in Austin Ridge Subdivi- sion in South Evanston in Section thirty (30), Township forty-one (41) North, Range fourteen (14) East of the Third (3rd) Principal Meridian, lying west of Ridge Road, the plat of said Whyte and Bell Construction Company's Resubdivision having been filed for record November 24, 1922 in the office of the Recorder of Deeds of Cook County, State of Illinois and entered in Book one hundred seventy-six (176) of Plats, Pages two (2) and three (3) as Document number 7727320, be and the same is hereby vacated, as the same is no longer required for public use and the interests of the City of Evanston will be subserved by such vacation. Section 2. The plat hereto attached, indicating in red coloring, the property vacated, is hereby approved and made a part of this ordinance and the City Clerk is hereby directed to certify the same as such. Section 3. This ordinance shall be in full force and effect from and after its passage and approval and the filing in the office of the Recorder of Deeds of Cook County, Illinois, of a certified copy of this ordinance, to which is attached a plat showing the property vacated. Adopted by the City Council of theCity of Evanston on the 4th day of April A.L. 1923. Approved: April 5, 1923. John F. Hahn, H.P. Pearsons, City Clerk Mayor. 378 Recommendation, Estimate and Ordinance. RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the :Mayor and Aldermen of the City of Evanston in the City Council Assembled We herewith submit an ordinance providing that Ma roadvay of WI IM ZZIL'ON9 froz the root Une of 412)=18 AAM11= to a point ton (10) foot Mot of than Coat line 'of VWM ' ' AV71.17' , aloo tho roadrays of ASMAUD AV*_1XAM tangy. U-CUMY AWM01 t e4011 rr= tho coUth line of FIZ= tUTW ►T to n polnt ton (10) foat cough of tho north line of CIUMI ; . oleo tho roadvWo of all tntorooctr• ink; u troato Lund allOYO 171rIC Vithin Onld porttoto Of Caid otrooto and nti ► included In tho rotadrjoy,a thEartlof, in tho City of i'vawton, CoUnt:,y of COOK* Mato of 1111nb610# bC lMra vad by Mmdln1l, *=bt.n rfith a Portlra d Cc =nt Concrote 0=b, gnvinr, with a bituninouz €moo= pavo=nt laid on a Portland G=ont Concrote tuna or fcun- datiort, conotructina catch btacaino,_ oatoh blaoiln aolnnectiono to pr000nt aarror, 'ad uatina oatoh' 'baolno# manhol,00, valvo Qtamberp =d r*cnAw pnvinG zadjoi>e lnL- and aonnoctir>l with the propcood 1Mrover_=t,- to- got.%ar rith an ootI=to of thb coat of said improvonont and report- rind the pausago. of maid ordinwoo =d the mkiti& of tho iMrovc- rant contemplated thorain. Roapootft.11.y DubMitt ed, ...... . .... board of Local lmyrov=entd of that City of Xv=at•on• Illlnoio. Tinted, DVaW Iron, Illinolo # 9 2 r ESTIMATE OF- ENGINEER OF BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled The Board of Local Improvements of the City of Evanston having adopted a resolution that the road.aay of V1I1 i CfHItT, from tho taaot,. iine of .AGBURY AVEItO to as Point ton (10) i"eot t?oat of th© coat lino of ; MIMI CU AVas7Ur., also tho roademyc of 6SULM AU?SU3t and. MUST i1W-S' M 9 each from. thO south limo of VILMR. MiXT to a 'point ton (10) fact south of tbo north lino of CrRAIR E3UM?. aloo tho roodumya of all intou- acotint otrocto an9 allayo lying"Vithin daid portiono of nand aatroots and not laol>udod in tho, rod4wWo thereof, is the City of Avanutone County of Coo&# Utoto of I1linoi®, ba improved by grodlnC, ovrbing +olth a kortlwid Comont Conoroto ourb-puvina with a bitum. . inouo macadam pa.vc ent •laid on a %ortlaad Comont Conoroto baao or foundation# oonatructing catch boolno# catch baoin connoctiono to pr000nt oevor, adjuct,ing catch baoino, mahol.co, valva chambore and macadam paving adjarinine nand oonnovting with tho prop000d im- provement; W prosolnted to tho City Counoll of tho City of u Zvnoton, a reco= adotion that ouch improvomat ,bo =do* I horn- aitb oubmit an ootim►to of the coot of ouch Improvomant. so doo• oribed In oraid rcooluttions including labor, matoriel and lawful ®xpcnnoo attanding tho pr0000dinso for akieng amid improv000nt and the Coot of coking and collacting tho n0000emnt, oo •providod by .tau, vi s s IZ1919:8 EWMW OpEr Ma _379 2100 cue ydoo of grading Q 01*00 pot *Us yd.... e....... � 4900 line ft. of Vortland Coe ~nt conoroto curb laid eom- ploto in place 0 01«28 pear line ft. «e ............ t 6800 04, ydoo of bituninoue Mcaam paving laid cog plate in place 0 $1.+40 par eqe yd.o «.«.«.«..... 6000 eq« yd®o of Vortland Cement Concrete baoo or founts dation laid coaVlote . in place C$ 01.80 per eq. yd. e ? brick catch bacino inolud.ina oaot iron covaare, plank botto>rme excavation and back fillings comploto in 108 �laoe, 0 080,04 crac+h.......... a «................. «. ine fte of catch basin connections to present ocrort averago depth of out 4J foot* inoluding trenching and back filling laid complete in place Q Q.'1e00 per lies. 11 catch baoias adjusted 0 012e00 cr ch.....«.........« 10 =nholoa adjusted Q 012e00 oaobe....... «............ 8 vulva chadberxa adjusted p $18e00 Cacho.... «.... «.. « 3s360.00 b, 4r89.00 98100.00 110700.00 1 160 eqe 140, of =cad= paving adjuotod Q 01«40 par eq« ydo for lawful expenooe atteading tho proceedings for angina paid IMrovewont and the coat of z 1hing cad collootin the nosesoment therofor,. not to oxceed six por contum (8AI of .ii •E 108.00 132e00 lao.00 72«00 210,00 tho above, to•aitsS1,894o8a.«.........«......««......1402629 And x hereby certify that in does not oxaocd the probablo coot and the lawful exponoca attending Dated* nvwnstoxr, xllinoloo ��, 19z3. racy opinion the above asatimto of tho above proposed loproveMat the 00004, nnglnoot of the Board of Local la- provomente of the City of Isvanoton An Ordinance. rroviding that the roadway of VILM STRGST « from the Brost line of Af3 way AVRHU3 to a point tern (10) fact oast of tho Gant line of y20AZ:=av 1y►VMM* also the rotdnsayo of AMMAND AVIMM and C30=1 AVZIIUIR, each from the south lino of WIWIM OTitl ET to a point ton (10)' toot south of the north lino of CRAlg 8'i",1 T, also the roadw rays of all intaroacting otrooto and alloys lying within said por- tione of said strreoto and not included in the roaftayo theroof, In the City of uvanoton, County of Cook. Mato of 1111noio. ass Im- proved by grading, ourbi.ng with a Portland Ccamont Conoroto ourb, . paving aith a- bituminoue mnoadam pavc=nt ' laid an ea Vortlrand Comcnt Conoroto base or foundation, constructing catch basins, catch booln oonnectiona to procent ooaoro adjucting catch basinu, avanhalce, ,valve chambero and maondam ;pa►ving adjoining axed ' oonnecting alth tho prop000d Improvoment e err It ORDAIMD BY tH� CITY C©til IL 00 Tom. CITY OF SVAMSr6.0: MOD 1. That a local imrove=nta shall bo arande althin the City of ava,noton. County of Cook, 0t:rata of il,linois# the nature, characters locality and description of which Ideal ingprovamant Is so follovo, to -nit; That tho roradvay of TlM`� OMST s: from the greet linen of AGSURT "MM to to point ton (10 ) foot rest of the east line Of 17MRS170B AVAVM- & also thb roadaayo of &IJUMID AiTMI M And WDOWY Alf =r emob from the aouth lines of V11MR- STR ? to a point ton. (10) foot oouth of the north line of Crain 0trect, echo the ror►dts #aya of all intor000ting atreeto and alleys lying vIthin cold por- tioni of caid otreoto and not included in the roadvayo thereof, in the City of Zvoneton• County of Cache Otate of 1l1lnolo& be and the c amo are hereby ordered is�proved ao folloarez . LOCATION OF ROADWAYS The center line of the roadways herein provided to be paved shall coincide with the center line of the respective streets and alleys within which said roadways are included. WIDTH OF ROADWAYS The width of the roadways herein provided to be paved shall be as follows, measured in feet from back to back of the curb hereinafter specified and at right angles to the center line of the respective street or alley, as the case may be, to -wit: Roadway of Wilder Street: At the wept line of Asbury Avenue. 24 feet. At a point ten (10) feet west of the east line of Florence Avenue. 24 feet. Roadway of Ashland Avenue: At the south curb line of wilder Street. 24 feet. At a point ten (10) feet south of the north line of Crain Street. 24 feet. Roadway of Ve>sley Avenue: At the north line of Milder Street. 24 feet. At the south line of wilder Street. 24 feet. At a. point ten (10) feet south of the north line of Crain Street. 24 feet. Roadway of intersecting alley two hundred (200) feet west of Asbury Avenue: At the north line of Wilder Street. 20 feet. At the south line of Wilder Street. 20 feet. Roadway of intersecting alley one hundred twenty (120) feet west of Wesley Avenue: At the Louth curb line of gilder Street. 16 feet. At the south line of wilder Street. 16 feet. Hoadwo y of intersecting alley one hundred twenty (120) feet east of Ashland Avenue: At the south curb line of wilder Street. 16 feet. At the south line of s,ilder Street. 16 feet. IZ 0198 381 The width of roadway at intermediate points shall be respectively proportional to the foregoing. GRADE OF ROADWAY AND CURB The grade of the roadways herein provided to be paved, when finished, and the grade of the top of the curb hereinafter specified, when completed and set in place, are hereby established as follows, measured in feet and dec- imal parts of a foot above the datum plane of the City of Evanston, to -wit: Transverse Section of Roadway. Crown Line. Gutter Line. Top of Curb. gilder $treat: At the went line of Asbury Avenue. 33.30 32.80 33.30 At a point ninety-eight (98) feet west of the west lines ►.f Asbury Avenue. 32.80 32.30 U.80 At a point -one hundred. twenty- three (123) feet gent of the west line of Asbury Avenue 32.50 '32.00 32.50 At a point one hundred. forty- three (143) Peet west of the ,!rest lines of Asbury .Avenue 31.90 31,.40 31.90 At a point two hundred three (203) feat west of the west line of Asbury Avenue 29.80 29.10 29.80 " At a point two hundred twenty three ( 223) foot west of the lost line of Aabury.Avenue 29.60 29.10 29.60 At a point twenty-one (21) Feet east of the east line of Wesley Pve:nue , 26-g0 26.80 26.30 At a point twenty-one (21) feet west of the east line of Wesley Avenue. 26.00 25.80 26.00 At a point twenty-one (21) feat eaut of the wont line:'of Wesley kvenue 26.00 25.50 26.00 A.t a point sixty-nine (69) fact west of they weet line of Feeley Avenue 24.60 24.10 24.60 At a point thirty-three (33) feet eeat of the east line of Ashland Avenue. 18.73 16.25 18.75 At the center line of Aah2rlft t Avenue. 18.15 17.65 18.15 I.t a point one hundred fifteen - (115) feet east of the east line of florenee Avenue. 17.30 16.80 17.30 At a point ton (10) feet crest of the eaot line of Florence Avenue. 16.90 1.6.50 16.90 Wealoy Avenue: At the !north line of Wilder Street. 26.10 25.70 26.10 At a point twenty-one (21) feet south of the north line of Wilder Street 26.00 25.50 26.00 At a point twenty-one (21) feet north of the south line of Wilder Streest. 26.00 25.50 26.00 At a point ninety (90) feet south of the south line of Wilder Street. 25.45 24.80_ 25.55 382 l-.;-sroree Section of Roadway Crown Line utter Line Sop of Curb A+ %, a point two hundred twenty- five (U5) feet south of the south line of wilder street 25.98 28.50 25.75 At a point one hundred thirty- four (134) feet north of the Worth line of Crain Street. 25.45 24.80 26.55 At a point ton (10) feet south of the north line of Crain Street. 25.90 25.55 28.90 Ashland Avenue: At a point twenty -ono (21) foot north of the south line of wilder street. 18.15 17.66 18.15 At a point one hundred (100) feet south of the south line of wilder Street. 20.60 20.10 20.60 At a point three hundred (300) feet south of the south line of Wilder Street. 21.80 21.30 21.80 At a point ton (10) feet south of the north line of Crain Street. 23.10 22.70 27 * 10 Asioy two hundred (200) feet north of the west line of Asbury Avenue: At the north line of Wilder Street 30.40 29.95 30.20 At the south line of wilder St. 30.40 29.95 30.20 Alley one hundred twenty (120) feet west of the west line of Wesley Ave.: At the south curb line of wilder 3t.23.00 23.00 23.50 At the south line of wilder St. 24.20 23,78 24.00 Alley one hundred twenty (120) feet east of the east line of Ashland Ave.: At the south curb line of wilder 8t.20.90 20.40 20090 At the south lot line of Wilder St. 21.60 21.15 21.40 The grade of the crown line, gutter line and top of curb at intermediate points shall be respectively proportional to the foregoing. The datum plane hereinafter mentioned is the plane of 16w water mark of Lake Michigan in the year A. D., 1847, as established by the Trustees of the Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the north-west corner of Davis Street and Sherman Avenue, in said City of Evanston. The crown line hereinbefore mentioned shall be identical with the center line of the respective road- ways when completed. The gutter line hereinbefore mentioned shall be identical with the line where the surface of the road- ways when completed touches the face of the curbing on both sides of the respective roadways. The surface of the roadways herein provided to be paved when completed shall conform to the arc of a circle passing through the respective crown and gutter lines, and shall be true and symmetrical. GRADING Prior to laying down the pavement thereon, the roadways specified to be paved shall be cleaned in a thorough and workmanlike manner of all debris and rubbish, such as deteriorated pavements, crossings, box drains, culverts rstum s etc. The sub -grade shall be prepared b excavating the soil or fillip thereupon P, �' P P Y g g P with other and suitable soil to such depths and shapes as will insure the finished pavement being at the grade established therefor. Spongy earth that is unfit to be left in the sub -grade shall be removed by the con- tractor without extra charge. The sub -grade shall be rolled with a suitable self-propelling roller or flooded with water, or both as may be found necessary and practicable to thoroughly compact same. Any depressions that may appear as the rolling or flooding of the sub -grade progresses shall be filled upon at the surface with suitable soil and thoroughly corm pacted as before specified. 1Zi9198 CONCRETE CURB A concrete curb shall be constructed on both sides of the respective roadways herein provided to be paved. Said curb shall consist of a mixture, by volume, of one part of Portland cement, two parts of sand and four parts of crushed gravel or stone. Except that the top and exposed roadway face of the curb shall be surfaced to a depth of one-half inch with a mortar composed of two parts of Portland cement and three parts of clean, sharp sand of the sizes and quality hereinafter specified for the sand to be used in .making this curb. The crushed gravel or stone specified for the body- of the curb shall be clean, hard, free from dust, loam, vegetable or other deleterious matter, and shall show sharp edged cubical fracturing. This crushed gravel or stone shall be of variable sizes, grading from a maximum dimension of one inch down to a minimum of one-fourth inch, and so proportioned that the particles capable of passing through a screen of three -fourths inch mesh will fill the voids in the particles retained on such size screen, but without more than ten per cent excess of the smaller particles. The sand specified for the curb shall be free from clay, loam, vegetable or other deleterious matter. The grain shall be angular, and shall range in size from one -quarter inch down to the finest, but not more than 3 per cent shall pass through a seive having (100) one hundred meshes per lineal inch. The sand shall be of such quality that mortar composed of one part of the cement hereinbefore specified and three parts of the sand, by weight, when made into briquetts, will develop a tensile strength at least equal to the strength of a mortar of the same consistency and proportions made with the same cement and Standard Ottawa sand. The Portland cement specified for the curb shall be of such quality that representative samples collected form the shipments made for the job shall be capable of passing the tests for fineness, soundness, initial setting, and tensile strength hereinafter set forth for Portland cement. The sand and crushed gravel or stone shall be clean when delivered on the job and shall be kept clean until used. In no case shall the sand and crushed gravel or stone when used, contain frost or lumps of froz- en matter. Forms shall be used in constructing the curb. The forms shall be sound, free from warp, and of suffici- ent strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established lines and grades. Wooden forms shall be thoroughly wetted and metal forms shall be oiled be- fore concrete is deposited against them. All mortar and dirt shall be removed from forms that have pre- viously been used. The ingredients specified for the body of the curb shall be mixed in a batch machine mixer of a type that will insure a uniform mixture and product. Clean water, free from oil, acid, alkali, or vegetable matter shall be admitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the crushed gravel or stone from the mortar. Provided, that on such portions of the work as it may be imprac- ticable to use the machine mixer, thorough and efficient hand mixing will be allowed. The equipment used, if any, for hand mixing shall be as specified for mixing the surfacing mortar. The ingredients specified for the mortar to be used in surfacing the top and exposed roadway face of the curb shall be mixed on a movable, tight iron platform, of ample size to accommodate the manipulations specified, without getting the ingredients off the platform or mixed with dirt. The Portland cement and sand specified for surfacing portions of the curb shall be thoroughly mixed on the platform with hoes or shovels, and until the color becomes uniform, after which sufficient water, of the quality hereinbefore required, shall be gently added, while the mixing continues, to produce a stiff and homogeneous mortar. The concrete and the finishing mortar after being prepared as specified shall be promptly deposited and compacted in the forms, in layers not exceeding six inches in depth. The back of the curb shall be worked with a spade to secure a well filled surface. The front upper edge of the curb shall be rounded to a radius of one and one-half inches in such manner that the planes of the top and roadway face of the curb will be tan- gent to the curve described by said radius. As soon as the cement has sufficiently set, the forms shall be re- moved from the face of the curb; and the face mortar shall be promptly troweled down hard and smooth, drawing the cement from the crushed gravel or stone as little as possible. The gloss shall be removed with a vet brush. The curb shall be constructed in sections not less than four feet nor more than six feet in length. In con- structing the curb, all templates used to form the sections shall be kept perpendicular to the top of the curb. All joints shall be neatly tool finished. The joint marking shall correspond to the joint made by the tem- plates. The curb shall be twenty-four inches in depth, and the thickness shall vary uniformly from six inches at the top to eight inches at the bottom of the curb. The curb shall be built in such manner that the road- way face will be vertical; that the t op will be at the grade hereinbefore established; and that the back of the curb, at the top thereof shall be on the lines hereinbefore established. The curb at intersecting streets and alleys shall be constructed to true curves tangent to the intersecting curb lines proper. The radius of the curve to which the back of the curb shall conform shall be ten feet for intersecting street and six feet for intersecting alley curb lines. Except as above specified, for intersecting street and alley curb lines, the curb shall be constructed paralleled to the center line of the respective road- ways herein provided to be paved. The curb shall be constructed at such distances from the center line of the roadways, herein provided to be paved, as will give the respective width of roadways hereinbefore speci- fied and established, when measured from back to back of curb in the manner and on the lines herembefore set forth. 384 Trenches shall be excavated to sufficient width and depth to receive the curb and necessary moulding frames. Wherever other than sandy soil is encountered the curb trenches shall be excavated to a depth of six inches below the bottom of the curb and shall be re -filled to such depth with sand or cinders. The sand or cinders shall be compacted with water or by hand tampers. The frames shall be securely fastened in place and shall be accurately brought to line and grade before they are filled with concrete. The grade and line to which the frames are to be set shall be such as is necessary to insure the finished curb being true to the lines and grades hereinbefore established therefor. PORTLAND CEMENT CONCRETE FOUNDATION Upon the sub -grade prepared as hereinbefore specified, shall be constructed a Portland cement concrete base or foundation, five (5) inches thick. The concrete shall be composed by volume, of one (1) part of Portland cement; three (3) parts of clean, hard grained, and sharp sand; and five (5) parts of clean, hard limestone or gravel broken or graded so as to yield a range of sizes (in longest dimension) from two (2) inches down to one-half (1-2) inch, and so proportioned as to produce a maximum number and minimum volume of interstices in the aggregate. The concrete shall be prepared by mixing the cement, sand and stone or gravel in an approved batch mixer with sufficient clean water and mixing sufficiently to produce a plasticity best suited to the condi- tions of weather and soil. The concrete mixed as above specified, shall be promptly spread on the surface of the sub -grade, to the required thickness, and to such shape and grade as will insure the upper surface of the foundation after be- ing thoroughly compacted by rolling or tamping, being parallel with and three (3) inches below the grade hereinbefore specified for the finished roadway. The upper surface of the foundation shall not be troweled smooth but shall be left moderately rough to grip the bituminous macadam pavement specified to be laid thereon. BITUMINOUS MACADAM PAVEMENT Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard, broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of three (3) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be evenly applied to the limestone ( at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one and three quarters (1 3-4) gallons thereof being evenly spread on and used in each and every square yard of the roadway, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size rang- ing from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diam- eter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of'these limestone screen- ings the roadway so covered, shall be given a thorough rolling with a roller of the weight and type herein - before named. This rolling shall continue until the screenings are driven into, and thoroughly bonded With, the layer of stone to which same is applied. The surface of the roadway shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be evenly applied to the surface of the pavement a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread as to insure not less than three quarters (3-4) gallon thereof being evenly spread and used on each and every square yard of road- way. Immediately after the second application of asphaltic cement is made and spread and progressing therewith there shall be evenly spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one - ;eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one .one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square ,yard of the roadway. A final rolling of the roadway shall closely follow the spreading thereon of these granite chips. The tfinal rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the roadway is thoroughly compacted, and brought to a surface, free from de- 1pressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement herein provided to be built, shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The gutters shall be kept trimmed to the required thickness and grade as the work progresses. The "cubic yarda e' I` stone, herein required, shall be 16rified by measurement f f volume t ere ;fin cars,, or other conveyances, transporting same to said City, and prior to initial unloading; 'aiid shall be fur ther verified.by measured length of dumps and height of grade marks on the work. The stone shall b hauled on to the work in boxes of uniform size and contents and of such shape as to enable an easy and exact determination of the volume contained therein to be made on the site. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that - representative samples collected from shipments thereof shall be capable of meeting the following require- ments and of passing the following tests, to -Wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural as-- phalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used; successfully in the construction of sheet asphalt pavements, and shall possess such chemical .and physical properties and be so prepared for use as to best adapted to the climatic and traffic conditions of the roadway on which it is to be used. I (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100. grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit un der 200 grams for one minute. i (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various Hydrocarbons composing it shall be pres.. ent in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenhdi for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above` described. (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the "extent of at least 95%. (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98 /% shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement'shall be soluble in 75 degrees Baume petroleum naptha, at the aiil temperature to the extent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. CATCHBASINS For the purpose of receiving storm waters from the surface of the roadway or roadways, as the case may be, provided to be paved seven catchbasins shall be constructed at the necessary points along the sides of the said roadway or roadways. Said catchbasins shall be constructed of hard burned sewer brick and placed ver in the ground in such manner as to bring the tops of the iron covers herein required for said catchbasins, when in to the upper surface of the proposed curbing. Said catchbasins shall be cylindrical in shape having an internal di; of forty-two (42) inches at the bottom and upward to the lowest header course, being uniformly drawn in to t four (24) inches at the top of the masonry by means of eight (8) header courses of brick laid endwise and he tally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catchbasins. Said catchbasins shall have walls eight (8) inches thick, built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catchbasins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 /) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said caxc14 i basins shall each rest on a solid bottom of two (2) inch pine planks laid closely in single thickness and securely spikl$ to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure sixty (60) inches in diameter and shall have it upper side placed five and one-half (5%) feet below the upper surface of the brick wall for said catchbasins. Said catch= basins shall be connected with the sewer or sewers, as the case may be, now existing or herein provided to be con structed, as the case may be, in and along the center line of the said roadway or roadways at the side of which the respective catchbasins are to be constructed. Said catchbasins shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed, tile pipe having an internal diameter of nine (9) inches and of the type known . "Bell and Spigot" the metal of which pipe shall be thirteen -sixteenths (13/16) of an inch in thickness and shall be not' less than two (2) feet in length. Said pipe shall be straight, smooth, thoroughly vitrified, salt glazed, free from crack and blisters, and in all respects of the best quality and workmanship. All joints between the pipes shall be securely sealedo with a mortar of the quality herein required for brick walls in catch -basins. ` i Each catchbasiit connection shall sfart in a � { _ , 5 �t glazed, the pip6 "Y" branch of the quality -0ancl laid in the manner required for sewers, whi "Y braneli•Aal be set in the.sewer at a point not Jess than six (6) `get in advance of the catchbasin, measured along and in the downstream direction of the sewer from a point oh said •ewer directly, opposite the catchbasin. The pipes shall be laid true to line and grade and the connection shall enter the `.e`atclibasin at a point two and one-half (2/) feet above the plank bottom. The pipe entering the catchbasin through the brick walls thereof shall be an elbow with the bell end turned downward inside the catchbasin to form a trap. The pipe shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be backfilled as soon as prac- ticable in order to occasion the least possible inconvenience to the public in use of the street. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catchbasins shall each be equipped and fitted with a castiron cover weighing not less than three hundred thirty (330) pounds and having a vertical height of thirteen (13) inches, which cover shall be of the same size and 1. pattern or equal in size, quality and workmanship to the castiron covers now in use on existing catchbasins in Dempster 1 Street between Ridge Avenue and Dodge Avenue in said City of Evanston. Said catchbasin covers herein provided to �. Abe furnished and set shall rest on the walls of the catchbasins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catchbasins. The walls shall be built to 1 such height as will bring the fops of the covers when set in place, to the elevations hereinbefore specified for the top of the curb at the points where said catchbasins are to be located. ' MANHOLES TO BE ADJUSTED AND BROUGHT TO GRADE l The 10 brick manholes now located within the space herein provided to be paved, and which are already equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of k said manholes as may be necessary to bring the covers of the manholes to the height above specified and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid { in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one- half (1/) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be.used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. VALVE CHAMBERS TO BE ADJUSTED AND BROUGHT TO GRADE The brick valve chambers now located within the space herein provided to be paved, and which are already equipped wit:4 cast iron covers, shall have their covers raised or lowered, as the case may be, to € bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said valve chambers as may be necessary to bring the covers to the height above specified, and also to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in a mortar, composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 1-2) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. Said covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. CATCH BASINS TO BE ADJUSTED AND BROUGHT TO GRADE 1 The brick catch basins now located along the sides of the roadway or roadways, as the case may be, herein provided to be paved, shall have their covers raised or lowered as the case may be in such manner as to bring the tops thereof to the surface of the adjacent ground. Such adjustments as may be necessary shall be made to the walls of said catch -basins with hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1/) parts of clean -sharp sand mixed with sufficient clean water to give proper plasticity. Said covers shall be imbedded in mortar of the quality hereinbefore specified in adjusting said walls. Said catch -basins shall be connected to the curbs by means of sewer pipes of the kind, size and quality and laid in the manner hereinbefore specified for pipe used in constructing surface drainage sewers: ` Openings shall be made in curbs at points of said connections in such manner as to permit free and un- interrupted passage of storm waters, from the surface of the pavement hereinbefore specified, to said basins. ADJUSTMENT OF PRESENT DIACADAM PAVING The present macadam paving where the same adjoins the proposed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and quality composing said macadam paving and having been thoroughly compacted it shall form a base or founda- tion for a bituminous macadam pavement to be placed thereon. The upper surface of said base or foundation when completed shall be two (2) inches below the finished grade of the proposed improvement where same t,adjoins said macadam paving. Upon the base or foundation, prepared as hereinbefore specified, there shall be spread, a layer of clean, kiard broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a 4thicicness of two (2) inches thereof being spread, on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall he given an initial olling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as non as the stone is set and ceases to creep under action of the roller. .As soon as the initial rolling of the linie I ll; `b d"'the. layer thereof is dry, there shall be aRon, to the limestone (at a' temperature not less than, _ r more than 275 degrees Fahrenheit) an;asphaltic ce ment in such quantities as to insure not less that! 'n_ ; le0on thereof being evenly spread on and` used; in each and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the sur- face to which the same shall have been applied shall be uniformly covered with dry and hard limestone screen- ings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size ranging fro the largest particle that would, pass through a sieve havinW circular holes three -fourths inch in diameter, to the largest particle that would pass through a sieve having circular holes one-fourth inch in diameter. Tli limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone - which same is applied. Immediately following the spreading of these limestone screenings the paving covered, shall be given a thorough rolling with a roller of the weight and type hereinbefore named. This roll ,-"ing shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the paving shall next be thoroughly. cleaned of all loose stone, dirt, leaves or other foreign„ material thereon. After being so cleaned there shall be applied to the surface a second application of asphaltic` ' cement of the same kind and quality as that used in the first application. This second application shall b sufficient in quantity and so applied and spread, as to insure not less than three-quarters (Y4) gallon therel. being evenly spread and used on each and every square yard of paving. Immediately after the second, appli cation of asphaltic cement is made and spread (and progressing therewith) there shall be spread on the surface., of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three-: fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard, thereof being evenly: spread and used on each and every square yard of paving. A final rolling of the paving shall closely follow the spreading thereon of these granite chips. The fina ' rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the pavement is thoroughly compacted, and brought to a surface, free from depressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing th'e pavement shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The asphaltic cement used in the improvement herein provided, to be made shall be of such quality thafj. representative samples collected from shipments thereof shall be capable of meeting the following require-, ments and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural asphal. and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-produc of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfull" in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so prepared for use as to best adapt it to the climatic and traffic conditions of the roadway on which it to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. µ (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar. or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be present in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oit tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above- described. (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95%. (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98y2% shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in petroleum naptha, at the air temperature to the ex tent of not less than 72 per cent. ,.; (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15. per; cent of fixed carbon or residue coke. j. MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes-,:11 and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick:: shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty -fiver (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than fiy�.p (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand: shall be of such quality that mortar composed of one part of the cement herein specified and three parts,' of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensil' strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made+ shall b,e„= tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone' containing frost or lumps of frozen matter be 'iAe 00 PORT, LAND CEMENT - The Portland cement to be used in the iinprovem ent herein provided to be made shall be. of such qual- _ily that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit. i • . Fineness. The cement shall be so ground that 92 fo will pass through a standard sieve, having 10,000 Fmeshes and 75 fo will pass through a sieve having 40,000 meshes per square inch.. t Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, -warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten jhours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile Ltrength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. ' One Part Cement, Three Parts Standard Ottawa' Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. e i The briquettes shall show no retrogression in strength within the .period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or F stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The tile pipe to be used in the improvement herein provided to be made shall be of the bell and spigot i type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from i- any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said 'pipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet -in length. The thickness of the metal of which pipe shall be respectively as follows: ' For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the impriovement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance f -shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by b the Engineer of said Board, o , both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the wliole jo4t thireof ' chiding the sum of �!► •�# •�ri,�-r�i1►�a # ��ollars ($ being the amount included in the estimate of said Engineer Hereto attached, as the cost of making, levying and G 'collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General ! :Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements" A proved June 14th, A. D. 1897, and the amendments thereto, and that said sum of 004 * � b"Wred llr� ►*Esrl+1►r!1 &" �+����ii���/! aaikb! dollars ($ �.�!►' !.�I ► ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the' aggregate amount herein ordered to be assessed against the property, and also the assessment .on each lot and parcel of land therein assessed, shall be divided into *#* installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. IZ 19198 389 Section S. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the 'N4ayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cool: County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance . be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston, on the 4th day of April A.D. 1923. Approved: April 5, 1923. John F. Hahn, H.P. Pearson, City Clerk Mayo r. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON, ILLINOIS: • Section 1. That Harry P. Pearsons, Mayor, William Blanchard, Commissioner of Public Works and City Engineer and Etc-officio Public Engineer, and Hal W. Smith, Commissioner of Streets, and Ex-officio Superintendent of Streets, shall con- stitute the Board of Local Improvements of the City of Evanston, Illinois, of which said Board the said Harry P. Pearsons, as Mayor of said City, shall be President and William Blanchard as City Engineer and Ex-officio Public Engineer shall be the Engineer. Section 2. All ordinances or parts of ordinances in conflict with any of the provisions of this ordinance, a re hereby repealed. Section 3e This ordinance shall take effect from and after its passage and approval. ' Adopted by the City Council of the City of Evanston on the 17th day of April A.D. 1923. Approved: April 17, 1923. John F. Hahn, H.P. Pearsons, City Clerk. Mayor e - - - - - - - - - - - AN O RD INANCE TO ESTABLISH OPFICLA.L TIME IN THE CITY OF EVANSTON DURING A PART OF THE YEAR 1923 AND TO ACCOMPLISH DAYTIGHT'SAVING THEREBY. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: Section 1. Central standard time shall hereafter be the official time within the City of Evanston for the transaction of all city business; except that from and after 2:00 A.M. on the last Sunday in April in the year 1923, official time for the City of Evanston shall b e and remain advanced one hour until 2:00 A.M. on'the last Sunday in September in the year 1923, when such official time shall cease, and by the deduction of one hour therefrom, be returned to Central standard time; and all legal or official proceedings of the City Council and all official business of the City shall be regulated thereby, and when, by ordinance, resolution or action of any municipal officer or body, an act must be performed at or within a pre- scribed time, it shall be so performed according to such official time. 390 Section 2. All clocks or other time pieces in or upon public buildings or other premises maintained at the expense of the City of Evanston, shall be set and run according to the official time as provided in Section 1 hereof, and it is hereby made the. duty of the officer or other person having; control and charge of such building or buildings and premises, to see that the said clocks or other timepieces are set and run in accordance with the official time as provided by this ordinance. Section 3. All persons residing, within the City, and all persons, firms or corporations doing business within the City are hereby requested to s et and run any and all clocks or other time- pieces under their control within the City in accordance with the official time as provided by Section 1 of this ordinance. Section 4. This ordinance shall be in force and effect from and after its passage and approval. Adopted by the City Council of the City of Evanston on the 17th day of April A.D. 1923. Approved: April 17, 1923. John F. Hahn, H.P. Pearsons, City Clerk. Mayor* BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON, ILLINOIS: Section 1. That a public park shall be created, established, opened and laid out, composed of .the following described lots, tracts and parcels of land, situate within the corporate limits of the City of Evanston, ,together with such riparian'tights as may be incident or appurtenant thereto, to -wit: hots 1 to 14 inclusive in the resubdivision of block 4, lots 1 to 6 inclusive in block 5, and the lands lying East of and adjoining said lot 6`in block 5 in Arnild and Warren's Addition to Evanston, being a subdivi- sion of the South West fractional quarter of Section 20, Township 41 Borth,•Range.14 East of the 3rd P.M., in Cook County, Illinois, (except from said premises that part thereof dedicated, occupied and used for Sheridan Square or Road) Section 2. That the expense of creating, establishing, opening and laying out said public park shall be met by and paid for out of the proceeds of a bond issue of One Hundred Fifty Thousand Dollars, which said bond issue was heretofore duly authorized by an ordinance therefor duly adopted by the City Council of the City of Evanston, and which ordinance was thereafter duly approved by a ,majority of the voters of said City voting upon the question of the adoption of said ordinance at an election duly held on April 3, 1923, to the extent that the proceeds of said bond issue -may be necessary for said purpose, and that such additional expense, if any, as may be necessary to make full payment for said public improvement shall be met and paid for by an additional or supple- mental bond issue for said purpose. Section 3. This ordinance shall be in effect from and after its passage and approval, according to law. Adopted by the City Council of the City of Evanston on the 17th day of April A.D. 1923. Approved: April 17, 1923. John F. Hahn, H.P. Pearsons, City Clerk. May or . IZ19198 AN ORDINANCE 391 Amending Section 1164 of the Evanston Code adopted March 26, 1915 by the City Council of the City of Evanston, Illinois. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON, ILLI.NOIS: Section 1. That Section 1164 of Article XXXIX of Chapter XIX of the Evanston Code, adopted March 26, 1915 by the City Council of the City of Evanston, be and the same hereby is amended to read as "follows: 1164 - Permission to Erect Pump Necessary - Fee) It shall be unlawful for any person, firm or corporation to erect or maintain in any part of a public street or parkway any gasoline pump without -that the permission of the City Council is first had and obtained. If such permission is granted by the City Council, the applicant shall pay an annual"permit fee of lVenty-Five Dollars, payable in advance on January lst of each year, and pro rated for any fractional part thereof on a monthly basis - one-half a month or more counting as a full month. All permits shall be revocable at any time by action of the City Council. t Section 2. Any person, firm or corporation who shall erect, construct or maintain any gasoline pump in any part of a public street or parkway, `in violation of any of the provisions of this ordinance, shall be fined not"less than Fifty Dollars, nor more than Two Hundred Dollars for each offense, and each day that such gasoline pump shall be erected, constructed or maintained in a public street or parkway, in violation of any of the pro- visions of this ordinance, shall be deemed a separate offense. Section 3. All ordinances or parts of ordinances in con- flict with this ordinance are hereby repealed. Section 4. This ordinance shall be in force from and after its passage, approval and publication, according to law. Adopted by the City Council of the City of Evanston on the 15th day of May A.D. 1923. Approved: May 18, 1923. John F. Hahn, H.P. Pearsons, City Clerk Mayor. Published in News -Index May 19, 1923. - - - - - - - - - - BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON, ITL.LINOIS : Section 1. It shall hereafter be unlawful for any pmrson to ride upon the outside or upon the running board of any motor or other "vehicle upon any of the streets, highways or other public places in the City of Evanston. Section 2. Any person riding; upon the outside or on the running board of any motor or other vehicle, or the person in charge of or driving such vehicle, and consenting to, or per- mitting any person or persons to ride on the outside or on the running board of such vehicle on any of the public streets, alleys or other public places of the City of Evanston shall, upon convic tion, be fined in a sum not less than Five Dollars nor more than Two Hundred Dollars for each offense. Section 3. All ordinances or parts of ordinances in con- flict with any of the provisions of this ordinance are hereby repealed., 1 Section 4. This ordinance shall be in effect from and after its passage; approval and publication. Adopted by the City Council of the City -of Published in Evanston on the 15th day of May A.D. 1923. News Index. Approved: May 18, 1923. John F. Hahn-;. 7t y 19, 1923. H.D. Pearsons, Mayor City Clerk. 342im IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: Section 1. That the Public Alley lying south of and adjoining the east ten (10) feet of Lot six (6) and south of and adjoining all of lots seven (7) and eight (8) also the Public Alley lying west of and adjoining Lot nine (9) in Central Street Addition to Evanston, the plat of said Central Street Addition to Evanston having been filed for record November 23, 1916, in the office of the Recorder of Deeds, Cook County, Illinois, as Document number 5998873, be and the same is hereby vacated, as the same is no longer required for public use and the` interest of the City of Evanston will be subserved by such vacation. Section 2. The plat hereto attached indicating by the words "Public Alley Hereby Vacated" the property v�tc,tted is -hereby approved and made a part of this ordinance, and the City Clerk is hereby directed to certify the same as such. Section 3. This ordinance shall be in full force and effect from and after its passage and approval and the filing in the office of the Recorder of Deeds of Cook County, Illinois, of a certified copy of this Ordinance, to v&ich is attached a plat showing property vacated and dedicated. Adopted by the City Council of the City of Evanston on the 15th day of May A.D. 1923. Approved: May 18, 1923. John Fe Hahn, H.P. Pearsons, City Clerk Mayor* ` Recommendation, Estimate and Ordinance. RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled We herewith submit an ordinance providing that tho roadway of WMT STMT from the west lot lime of .Lt*x A AY:= to the seat lot line of .BMW AVZNM* in tho city of ZT11161126tORs County of Cook, 3tute of Illinois# to improved by gsadUg, curbing with a Portland oement concrete curb, paring with a bituminous >e soadam pavoment laid on a Portland cement concrete bass or foundation and adjusting aaastoh b&sIna; together with aA OVAIMts Of the cost of said Improvement and reaom land the passage of said ordinance and the =kI tg of the Improvement contemplated thereiaf ROspectfully submitted & ♦ f f f. f f. f•. f f•. f f f. f f � i f f f f.• .. • ................................ Board of Local Imp rOTeaftte of the City of Ivanstone Illinois* Bated,, Bvaneton, I2liaoie 1Z19198 393 ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled : The Board of Local Improvements of the City of Evanston having adopted a resolution that the roadmy of GL XT ME, ►TT from the Mont lot line of BM=, TT AVEM to the ciact lot lino of nUMG AvgT1E & in the City of Rvanoton, County of Cools. 6tato of I111noia * bo 'iagrovod by aradina, cur'aing with a Portland ccacnt concrete ourb, paving rtith a bitun.1nouo =eadaz pavo: mt laid on a Portland comnt concrete basso or foundation and adjusting -catch baoino; and presented to the City Council of the City of Eaanoton a r000m.. mondation that ouch IMVrovermsnt ;ba rmdo, I horcrrith oubmi t €M ootiMte of the Coot of Cald it prove nt ao d000ribod in said resolution, including laboar# tutorial and Iravful exponeca at- tending the prooeedingo for cahine cald im9rovoment and the coot of mkina and callectina the aoriocoment, as P OVidod by lavi t viz: RSTIIATIQ OR COWT 1104 cue yds. of areding C 01.90 par ou. ydoseeoe.o 1,932.00 1300 lane ft. of Portland ooncnt concroto curb laid conVlotc in placo G 01.25 par lin. ft... 1#628.00 1700 laq* ydo t of Portland oo=nt concrete base or foundation laid covolote In plsaco () 01,80 ` poor sq. yc1......•..••...•.................... aeoeoeoo 1700 oq* ydo* of bitumi.nouc maoadam paving laid complOto In place 0 v61.7£ per cq. yd . • . , • . • , . 2697Sa.00 4 catch bonino adjusted to grado C,' 016.00 cache 64.00 For lawful ozPcnaoo attending the grocoodingo for along oatd ingror>nnt tom, tW coot of 01hine end -0022o0tino tho cWc000t nt tharof it i n9t to ancood Din (a) var ccnUrn 69 the aboroa to*-rlt: 800086,00 679.36 And I hereby Corti fy tbnt in rrW opinion the above o©tirm,to does not exooad the probable coot of the above prop000d Improve - scant and the lawful expenoeo attondina the sari. Enginaor of the hoard of Iaoal Imr- provemonto of tho 01ty of Lvwwton. Datdd, Zvanlaton. Illi.noic, � q - An Ordinance, Pyrovidina that the roadway of GM= MEET from the veot lot lino of BEMMTT AVILM0 to the east lot lino of HMO AVMMZ# In the City of nranoton. County of Cooke State of Illinois, be improved by grading, curbing with a Portland cement concrete curb a paving with a bituminouo maaadtam pavcmmt laid on a Portland cement con- croto baoo or foundation and odjuotlna catch bnoino. IT a;DA=1D BY T1r, CITY COUMIL QP TM: CITY op' LVAMT0I7: CTIM 1. That a local improve=nt chall. be redo within the City of Svanoton, County of Cools, Stato of 1111noiia, the natcl<ros charaotor; locallty awl description of which local it prove' dont 1a ac follow t to -wit: That thfl roadway of MIA= CT�T from the vast lot lino of I3BMETT Ali.;= to tho coot lot line of 131VING AMMO, I in the City of Lvanoton, County of Cools, State of Illinois;, be and the ammo la hereby ordorcd irprovad ao follorra ; 304 LOCATION OF ROADWAYS The canter line of the roadways herein provided to be paved shall coincide with the center line of the respective streets and alleys within which said roadways are included. WIDTH OF ROADWAYS The width of the roadways herein provided to be paved shall be as follows, measured in feet from back to back of the curb hereinafter specified and at right angles to the center line of the respective street or alley, as the case may be, to -wit: Grant Street: At the west lot line of Bennett Avenue. 24 feet. At the east let line of jawing Avenue. 24 feet. The width of roadway at intermediate points shall be respectively proportional to the foregoing. GRADE OF ROADWAY AND CURB The grade of the roadways herein provided to be paved, when finished, and the grade of the top of the curb hereinafter specified, when completed and set in place, are hereby established as follows, measured in feet and dec- imal parts of a foot above the datum plane of the City of Evanston, to -wit: Transverse Section of Roadway. Crown Line. Gutter Line. Top of Curb. Grant street: At the most lot line of Bennett Avenue. 24.75 24.25 24.50 At a paint one hundred (100) flet went of the west lot line of Bennett Avenue. 24.70 24.00 24.75 At a point two hundred sixty- two (262) feet weft of the 25.20 24.70 24.95 weft lot line of Bennett Ave. At a point one hundred (100) feet east of the east lot line of Bwing Avenue. 24.64 23.89 24.64 At the east lot line of 39wing Avenue. 23.14 24.64 25.14 The grade of the crown line, gutter line and top of curb at intermediate points shall be respectively proportional to the foregoing. The datum plane hereinafter mentioned is the plane of low water mark of Lake Michigan in the year A. D., 1847, as established by the Trustees of the Illinois and Tichigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the north-west corner of Davis Street and Sherman Avenue, in said City of Evanston. The crown line hereinbefore mentioned shall be identical with the center line of the respective road- ways when completed. The gutter line hereinbefore mentioned shall be identical with the line where the surface of the road- ways when completed touches the face of the curbing on both sides of the respective roadways. The surface of the roadways herein provided to be_paved when completed shall conform to the arc of a circle passing through the respective crown and gutter lines, and shall be true and symmetrical. GRADING Prior to laying down the pavement thereon, the roadways specified to be paved shall be cleaned in a thorough and workmanlike manner of all debris and rubbish, such as deteriorated pavements, crossings, box drains, culvertssfutnps, etc. The sub -grade shall be prepared by excavating the soil, or filling thereupon with other and suitable soil to such depths and shapes as will insure the finished pavement being at the grade established therefor. Spongy earth that is unfit to be left in the sub -grade shall be removed by the con- tractor without extra charge. The sub -grade shall be rolled with a suitable self-propelling roller or flooded with water, or both as may be found necessary and practicable to thoroughly compact same. Any depressions that may appear as the rolling or flooding of the sub -grade progresses shall be filled upon at the surface with suitable soil and thoroughly com- pacted as before specified. IZ19198 CONCRETE CURB 395--1 A concrete curb shall be constructed on both sides of the respective roadways herein provided to be paved. Said curb shall consist of a mixture, by volume, of one part of Portland cement, two parts of sand and four parts of crushed gravel or stone. Except that the top and exposed roadway face of the curb shall be surfaced to a depth of one-half inch with a mortar composed of two parts of Portland cement and three parts of clean, sharp sand of the sizes and quality hereinafter specified for the sand to be used in making this curb. i The crushed gravel or stone specified for the body of the curb shall be clean, hard, free from dust, loam, vegetable or other deleterious matter, and shall show sharp edged cubical fracturing. This crushed gravel or stone shall be of variable sizes, grading from a maximum dimension of one inch down to a minimum of one-fourth inch, and so proportioned that the particles capable of passing through a screen of three -fourths inch mesh will fill the voids in the particles retained on such size screen, but without more than ten per' cent excess of the smaller particles. The sand specified for the curb shall be free from clay, loam, vegetable or other deleterious matter. The grain shall be angular, and shall range in size from one -quarter inch down to the finest, but not more than 3 per cent shall pass through a seive having (100) one hundred meshes per lineal inch. The sand shall be of such quality that mortar composed of one part of the cement hereinbefore specified and three parts of the sand, by weight, when made into briquetts, will develop a tensile strength at least equal to the strength of a mortar of the same consistency and proportions made with the same cement and Standard Ottawa sand. The Portland cement specified for the curb shall be of such quality that representative samples collected form the shipments made for the job shall be capable of passing the tests for fineness, soundness, initial setting, and tensile strength hereinafter set forth for Portland cement. The sand and crushed gravel or stone shall be clean when delivered on the job and shall be kept clean until used. In no case shall the sand and crushed gravel or stone when used, contain frost or lumps of froz- en matter. Forms shall be used in constructing the curb. The forms shall be sound, free from warp, and of suffici- ent strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established lines and grades. Wooden forms shall be thoroughly wetted and metal forms shall be oiled be- fore concrete is deposited against them. All mortar and dirt shall be removed from forms that have pre- viously been used. The ingredients specified for the body of the curb shall be mixed in a batch machine mixer of a type that will insure a uniform mixture and product. Clean water, free from oil, acid, alkali, or vegetable matter shall be admitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the crushed gravel or stone from the mortar. Provided, that on such portions of the work as it may be imprac- ticable to use the machine mixer, thorough and efficient hand mixing will be allowed. The equipment used, if any, for hand mixing shall be as specified for mixing the surfacing mortar. The ingredients specified for the mortar to be used in surfacing the top and exposed roadway face of the curb shall be mixed on a movable, tight iron platform, of ample size to accommodate the manipulations specified, without getting the ingredients off the platform or mixed with dirt. The Portland cement and sand specified for surfacing portions of the curb shall be thoroughly mixed on the platform with hoes or shovels, and until the color becomes uniform, after which sufficient water, of the quality hereinbefore required, shall be gently added, while the mixing continues, to produce a stiff and homogeneous mortar. The concrete and the finishing mortar after being prepared as specified shall be promptly deposited and compacted in the forms, in layers not exceeding six inches in depth. The back of the curb shall be worked with a spade to secure a well filled surface. The front upper edge of the curb shall be rounded to a radius of one and one-half inches in such manner that the planes of the top and roadway face of the curb will be tan- gent to the curve described by said radius. As soon as the cement has sufficiently set, the forms shall be re- moved from the face of the curb; and the face mortar shall be promptly troweled down hard and smooth, drawing the cement from the crushed gravel or stone as little as possible. The gloss shall be removed with a -,vet brush. The curb shall be constructed in sections not less than four feet nor more than sip: feet in length. In con- structing the curb, all templates used to form the sections shall be kept perpendicular to the top of the curb. All joints shall be neatly tool finished. The joint marking shall correspond to the joint made by the tem- plates. The curb shall be twenty-four inches in depth, and the thickness shall vary uniformly from six inches at the top to eight inches at the bottom of the curb. The curb shall be built in such manner that the road- way face will be vertical; that the t op will be at the grade hereinbefore established; and that the back of the curb, at the top thereof shall be on the lines hereinbefore established. The curb at intersecting streets and alleys shall be constructed to true curves tangent to the intersecting curb lines proper. The radius of the curve to which the back of the curb shall conform shall be ten feet for intersecting street and six feat for intersecting alley curb lines. Except as above specified, for intersecting street and alley curb lines, the curb shall be constructed paralleled to the center line of the respective road- ways herein provided to be paved. The curb shall be constructed at such distances from the center line of the roadways, herein provided to be paved, as will give the respective width of roadways hereinbefore speci- fied and established, when measured from back to back of curb in the manner and on the lines herembefore set forth. _ 396 Trenches shall be excavated to sufficient width and depth to receive the curb and necessary moulding frames. Wherever other than sandy soil is encountered the curb trenches shall be excavated to a depth of six inches below the bottom of the curb and shall be re -filled to such depth with sand or cinders. The sand or cinders shall be compacted with water or by hand tampers. The frames shall be securely fastened in place and shall be accurately brought to line and grade before they are filled with concrete. The grade and line to which the frames are to be set shall be such as is necessary to insure the finished curb being true to the ` lines and grades hereinbefore established therefor. PORTLAND CEMENT CONCRETE FOUNDATION Upon the sub -grade prepared as hereinbefore specified, shall be constructed a Portland cement concrete base or foundation, five (5) inches thick. The concrete skall be composed by volume, of one (1) part of ! Portland cement; three (3) parts of clean, hard grained, and sharp sand; and five (5) parts of clean, hard limestone or gravel broken or graded so as to yield a range of sizes (in longest dimension) from two (2) f inches down to one-half (1-2) inch, and so' proportioned as to produce a maximum number and minimum 'rvolume of interstices in the aggregate. The concrete shall be prepared by mixing the cement, sand and stone or gravel in an approved batch mixer with sufficient clean water and mixing sufficiently to produce a plasticity best suited to the condi- tions of weather and soil. The concrete mixed as above specified, shall be promptly spread on the surface of the sub -grade to the equired thickness, and to such shape and grade as will insure the upper surface of the foundation after be- ng thoroughly compacted by rolling or tamping, being parallel with and three (3) inches below the grade ereinbefore specified for the finished roadway. The upper surface of the foundation shall not be troweled mooth but shall be left moderately rough to grip the bituminous macadam pavement specified to be laid hereon. BITUMINOUS MACADAM PAVEMENT Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, `hard, broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of three (3) inches thereof being spread on and used in each and every square yard of the ,roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. t As soon as the ,initial rolling of the limestone is finished, and the layer thereof is dry, there shall be evenly applied to the limestone ( at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one and three quarters (1 3-4) gallons thereof being evenly spread on and used in each and every square yard of the roadway, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the ,;surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size rang- : ing from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diam- eter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screen- ings the roadway so covered, shall be given a thorough rolling with a roller of the weight and type herein- ? before named. This rolling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. i The surface of the roadway shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be evenly applied to the surface of the pavement 'a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread as to insure not less than three quarters (3-4) gallon thereof being evenly spread and used on each and every square yard of road- -way. Immediately after the second application of asphaltic cement is made and spread and progressing therewith there shall be evenly spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square i' yard of the roadway. A final rolling of the roadway shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the roadway is thoroughly compacted, and brought to a surface, free from de- ipressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing � •the pavement herein provided to be built, shall be filled, as the rolling continues, with the same respective `kind of stone as that on which the roller is operating. The gutters shall be kept trimmed to the required thickness and grade as the work progresses. -Z -O � 9 8.­ M --A The cubic yardage of stone, herein required, shall be verified by measurement of volume thereof in cars, or other conveyances, transporting same to said City, and prior to initial unloading, and shall be fur- ther verified by measured length of dumps and height of grade marks on the work. The stone shall be hauled on to the work in boxes of uniform size and contents and of such shape as to enable an easy and exact . determination of the volume contained therein to be made on the site. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that'!, representative samples collected from shipments thereof shall be capable of meeting the following require-1 ments and of passing the following tests, to -wit: 44 (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural as- phalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a! by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical BITUMINOUS MACADAM PAVEMENT properties and be so prepared for use as to best adapted to the climatic and traffic conditions of the roadway, on which it is to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100, grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit un- der 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various Hydrocarbons composing it shall be pres- ent in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above; described. ! (7). It shall be soluble in chemically pure carbon disulphide at air temperature* to the extent of at least 95%. (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98 /% shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in 75 degrees Baume petroleum naptha, at the air temperature to the extent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. CATCH BASINS TO BE ADJUSTED AND BROUGHT TO GRADE The 4 brick catch basins now located along the sides of the roadway or roadways, as the case may: be, herein provided to be paved, shall have their rovers raised or lowered as the case may be in such manner as to bring the tops thereof to the surface of the adjacent ground. Such adjustments as may be necessary, i shall be made to the walls of said catch -basins with hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1/) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. Said covers shall be imbedded,, in .1 mortar of the quality hereinbefore specified in adjusting said walls. Said catch -basins shall be connected to the curbs by means of sewer pipes of the kind, size and quality and _laid in the manner hereinbefore specified for pipe used in constructing surface drainage sewers. . ; Openings shall be made in curbs at points of said connections in such manner as to permit free and un-i interrupted passage of storm waters, from the surface of the pavement hereinbefore specified, *to said basins.. j� 3 9 8 - - - --- - _ ------ - --- MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes ` and valve chambers for this improvement shall be har d burned sewer brick of the best quality. The brick ` tshall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. :. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same, cement and standard i! Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to'be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit: Fineness. The cement shall be so ground that 92 fo will pass through a standard sieve, having 10,000 meshes and 757o will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in'thickness at the center and tapered tq a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or'swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the .period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at k such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The tile ,pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that .would be imposed upon it from within or without. Said 1pipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. 1Z 19198 399 All the material used in the construction of the impnovement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of 1rjTR 1jumtred sove 'Ity-nine and thirty-sl C hundredths dollars ($ 879«36* ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of five hundred seventy-nine and thirty-six hundredth$ dollars ($ shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into 'ion installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. b ".:` Cit; C !MC11 0 t::e of Evar�,ton d 7C/�. r��f Or--- ------------ A. r`:p oved---------19 City GlceA 400 Recommendation, Estimate and Ordinance. RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled : We herewith submit an ordinance providing that the Public Alleys extending from the South lot line of LIBRARY PZdtz to the north lot lisle of JWT1M STROT, also the Pnblio Alley lyin north of and adjoining Lots eight (S) , nine (9) , ten (10) axd • even (11) # all In Block three (3) a Village of 14M rA tomp in the City of lvaanston, County of Cook, State of Illinois, be i"roved by grading. pavin to a width of nineteen (19) feet frith a concrete pavement six 16) inches in thickness # composed of Portland cement, sand and gravel, mixed by volume in ratios of 2:20 respectively, with sufficient clean ester to gire proper plasticity, using a bituminous filler strip for expansion joints in pavements constructing necessary aurfaee drainage sewer of vitrified# salt lased, the pipe baying an internal diameter of nine (9) inches fthe metal of which pipe shall be thirteen -sixteenths (15/16) of an inch in thickness)# brick catch basins, six-inch internal diameters vitrified, salt glazed, the pipe catch basin connections to surface drainage sewer and brick manholes adjust- ing present macadam paying adjoining and connecting with the proposed inprovementi together with an estimate of the cost of said improvement and recommend the passage of said ordinance and the making of the ixprovemaaient contemplated therein. Respectfully submitted, ,f✓C 961.1. ........ Board of Looal Improvements of the City of B'vanston. Illinois. Dated-, Btanston• Illinois, .5" l / q,2 3 J ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled : The Board of Local Improvements of the City of Evanston having adopted a resolution that US Pablie Alleys oxtwAftg from the south lot Ilse of Li8RMT BL= to the north lot line of ]POSTAL STRR&T. also the Public Alley lying north of and adjoining Lots ei9tt (8). nine J9)e ten (10) and eleven (11) • all in ]flock three 3) , Village o Ivanston, 3n the City of Zvaanstoa# County of Cook# State of Illinois, be Is* pareTed by graadinge paavi>la tv a width of nineteen (19) toot with a ocagrete pavemat six 16)iachos in thicknesso composed of P*rtland cemento sand and gravelp mixed by volume in ratios of 10-2a3 respectively# with sufficient clean water to give proper 3asticity, using a bituminous filler strip for expansion joints In pavement, constructing necessary surface drainage sewer of V1ikrified, salt lased, the pipe having an internal d1wooter of alne (9) inohes fthe natal of which pipe aball be thirteon•sixtoenthe (13/16) of an inch in thickness), brick catch basins six-inch Internal diameters vitrified, salt g3ased, tale pipe catch basin oonlsootioss to surface drainage sewer and brick amnhole, adjusting pp ent uaaadam paving adjoining and connecting with the proposed iiirevionest; and presented to the City Council of the City of jftnston a recosa gradation that such Improvement be ms+ie, I here- with oubmit as estims><te of the cost of said inprovsusnt as des- oribed In said resolution# including Labor, mteri,+al aead lawful erases attending the proceedings ter raking said i Yea tt a7Wthe Best ,of zwking and collecting tassesasment, as pseTxded he Vy lave Tian: 1Z19198- - _ 401 E ST MTX OF COST 670 cu. yds. of grading ® $1.75 per cue yd....... .....$ 1,172.50 2020 so. yds. of Portland cement concrete paving com- 660 plete in place ® $2e85 per sq, yd................. line ft, of bituminous filler strip for expansion 5,757.00 joints in paving laid complete in place 0 15.d per line ft....................................... 99,00 220 line ft. of nine -inch internal diameter, vitrified, salt glazed* tile pipe surface drainage sewer (average depth of cut five and one-half (0 ) feet) laid complete in place including trenchingo back - filling and removal of surplus excavation 0 $2,40 per line ft....................................... 528.00 3 brick catch basins including cast iron covers, plank bottoms, excavation, backfilling and removal of surplus excavation, complete in place 0 $85.00 each ....................... ..... .. . . . .. . . .. . . . .... 25 5.0 0 30 line ft. of six-inch internal diameter, vitrified, salt glazed, the pipe catch basin connections to surface drainage sewer (average depth of cut five (5) feet) including trenohing, baokfilling and removal of surplus excavation, complete in place $1.75 per line ft............................... 52,50 1 brick manhole, including cast iron cover, excavatione backfilling and removal of surplus excavation, com.. let i P e n place ® $85.00 each..... ................. 85,00 200 Jkq. yds, of iea,cadam paving adjusted ® $1.60 per sq.yd.320.00 For lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment therefor, not to exceed six (6) per centum of the above, to-wit:$8,269.00.........................,496.14 Total.......... 08,765.14 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improvement andthee?awful expenses attending the same. Engineer of the Board of Local Im- provements of the City of Evanston. Dated, Evanston, Illinois, An Ordinance._ Providing that the Public Allays extending from the south lot line of LIBRARY PLACE to the north lot line of POSTER SSMET, 'also 'the Public Alley lying north of and adjoining Lots eight (8), nine (9), ten (10) and eleven (11), all in Block three (3). Village cf I., Evanston, in the City of Evanston, County of Cool. State of Illinois:, be improved by grading, pavin16) to a width of nineteen (19) feet' with a concrete pavement six inches in thickness, composed of Portland cement, sand and gravel, mixed by volume in ratios of 1:2:3 respectively, with sufficient clean water to give proper plasticity, using a bituminous filler strip for expansion Joints in pavement, constructing necessary surface drainage ec er of Qitri- fied, salt glazed, tile pipe having an internal diameter of nine �9) inches (the metal of which ipe shall be thirteen-nixteenths 13/16) of an inch in thickness, brick catch basins, -six-inch internal diameter, vitrified, salt glazedo the pipe catch basin connections to eurfaee drainage eewer and brick zmxnhole, adjuct- ing present macadam paving adjoining and connecting with the proposed improvement. BE IT ORD1iMD BY TM CITY COUNCIL OF TIM CITY OF EVAISTOIT: EMCTIOA 1. That a local inprovement ohall be made within ' the City of Evanston. County of Cook, State of Illinois, the nature,; character• locality and description of which social improvement is as follows, to -wit: That the Public Alleys extending from the south lot line of LIBRARY PLACE to the north lot lino of FOSTER STFLMT r also the Public .Alley lying north of and adjoining Lots eight (8)' nine (9), ten (10) and eleven (11.), all in Block three (3), Village of Evanston, in the City of Evanston# County of cook, State of Illinois, be and the same are hereby ordcrod improved as folloi7s: Location of Pavements The center line of the pavements herein provided to be constructed shall coincide with the center line of the alleys within which said pavements are included. Width of Pavements The width of the pavements herein provided to be con- structed shall be nineteen (19) feet. Grade of Pavements The grades of the upper surface of the finished pave- ments herein provided to'be--constructed are hereby established as follows, measured in feet and decimal parts of a foot above the datum plane of the City of Evanston, to -wit: Transverse Section of Alley Outer Edge Center line of Pavement of Pavement Alley east or Orrington Avenue: At the south lot line of Library Place,, 16.15 15,90 At a point eighteen (18) feet south of the south lot line of Library P1. 15.72 15.47 At a point one hundred seventy-three (173) feet south of the south lot line of Library Place. 16.50 16.25 At a point two hundred twenty-eight (228) feet south of the south lot line of Library Place. 16.22 15.97 At a point fifty (50) feet north of the north lot line of Foster St. 17.24 16.99 At the north lot line of Foster St. 16.60 16.35 Alley west of Sheridan Road: At the south lot line of Library P1. 16.60 16,35 At a point sixty-three (63) feet south of the south lot line of Library Pl. 16.95 16.70 At a point one hundred and seventy-three (173) feet south of the south lot line of Library Place. 16.40 16.15 At a point sixty (60) feet north of the north lot line of foster Street. 17.05 16.80 At the north lot line of Foster St. 16.74 16.49 Alley North of and adjoining Lots eight (8), nine (9). ten (10) and eleven 111). At the west line of the Alley west of Sheridan Road. 16.40 16,15 1Z19198 Traneverse Section of Alle T� Y ptzter edge Center line. ; of Pavement of Pavemen.-; ` At a point seventy-nine (79) feet west of the west line of the alley west of Sheridan Rd. 17.00 16.75 At the east line of the alley east of ©rrington Avenue. 16.50 16.25 ALLEY PAVING The grade of the center line and outer edges of the pavement at intermediate points shall be respec- tively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane of the low water mark of Lake Michigan in the year A. D. 1847, as established by the Tru-gees of Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the northwest corner of Davis street and Sherman Avenue, in said City of Evanston. The upper surface of the pavement herein provided to be constructed, when completed, shall conform to the arc of a circle passing through the respective gra4e points in the center line and at the outer edges of the pavement, and shall be true and symmetrical. ++II r GRADING The alleysherein provided to be improved shall be cleaned prior to the paving thereof, in a thorough manner of all deteriorated planking, blocking or other debris. The soil of the roadway shall then be ex- cavated or filled upon with other suitable soil, as the case may be, to such depth and shape as will bring the upper surface of the finished pavement, when constructed as hereinafter specified, to the elevations and grades hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable self- propelling roller or flooding with water as the case may require. Depressions or holes appearing as the pre- paration of the sub -grade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left in the sub -grade, shall be removed by the contractor without extra charge. CONCRETE PAVEMENT —ALLEY Upon the subgrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement, composed of Portland cement, sand and gravel mixed by volume in ratios of one part of cement, two parts sand, and three parts of gravel with sufficient clean water to give proper plasticity and in the manner here- inafter set forth. The concrete shall be spread on th e sub -grade in such quantity and to such form that af- ter being compacted in place it shall have a uniform thickness of six inches. The Portland cement to be used in snaking this concrete pavement shall be of such quality that repre- sentative samples collected from shipments made for the job shall be capable of passing the following tests for fineness, soundness, initial setting, and tensile strength, to -wit: Fineness. The cement shall be ground so that 92 7o will pass through a standard sieve, having 10,000 meshes and 7576 will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling -,vater for four hours. The pat must show no check- ing, warping or swelling. Broken briquette of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified for the neat pat. Setting. The cement when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten' hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Paris Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. The sand to be used for making the concrete shall be free from dust, clay, loam, vegetable or other deleterious matter. - is .� . i.. , ;�.,, y.. u', , y�ll,d • r .. .. ... .,. .. ��.y�,',- }• ' ! Li-•t, :'abGlhhlLL! ��pR• �!� t 4 '4 ` The grains of sand shall be angular and shall range in size from one -quarter inch down to the finest; gut not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind - `drifted sand shall not be used. The sand shall be of such quality that the mortar composed of one part .of the cement hereinbefore specified and three parts of sand, by weight, when made into briquettes, will de- velop a tensile strength at least equal to the strength of a mortar of the same consistency and proportion made with the same cement and Standard Ottawa sand. In no case shall the sand, when used for this 'concrete, contain frost or lumps of frozen matter. The gravel to be used in malting this concrete shall be clean, hard, free from dust, loam, vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable sizes grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (1-4) inch. In no case shall the gravel when used for this concrete contain frost or lumps of frozen matter. The sand and gravel shall be clean when delivered on the job, and shall be kept clean until used. The method used for measuring the ingredients in the concrete shall be one that will insure a uniform proportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be considered one cubic foot. The concrete shall be mixed in a batch machine mixer of a type that will insure a uniform distribution of the ingredients throughout the mass. Ingredients of the concrete or mortar shall be mixed to the de- sired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in color, and homogeneous. Clean water, free from oil, acid, alkali or vegetable matter shall be ad- mitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush j"to. the surface under light tamping, but which can be handled without causing a separation of the gravel from. the mortar. The concrete shall be handled rapidly from the mixer to its place in the pavement. Successive batches i shall be deposited in place on the sub -grade in a continuous operation so that sections of the pavement be- tween expansion joints, hereinafter specified, shall be entirely completed and without the use of inter- mediate cross forms or bulk -heads. Concrete shall not be retempered or used that has partially hardened. The concrete shall be compacted and brought to the established grade and shaped with a template or straight edge, and shall be brought to a comparatively even surface. After the concrete has been so brought to ,grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even sur- Jace. Said roller shall not be less than five feet in length, and not less than eight (8) inches not more than twelve (12) inches in diameter and weighing not less than one hundred pounds (100 lbs.). The roller shall be operated across the pavement from side to side of same, by means of ropes attached to each side of the roller, at such angle with the center line of the pavement as to permit the roller to advance along the pavement two feet for each time across. After the roller has covered a given area in the manner de- scribed, the same area shall be similarly rolled by the roller for not less than three (3) times at intervals of fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may be -. _necessary to remove excess water. After the rolling has been completed the pavement shall be finished by two (2) applications of a belt =made of canvas, not less than six (6) inches wide and not less than two (2) feet longer than the width of the pavement. For the first application, vigorous strokes at least twelve (12) inches long shall be used. The longi- tudinal movemett of the belt along the pavement shall be very slight. The second application of the belt shall be immediately after the water glaze or sheen disappears, and the stroke of the belt shall be not more than four (4) inches, and the longitudinal movement shall be a continuous forward movement. A suitable bridge to span the width of the pavement shall be used to finish the joints, no part of which "shall be in contact with the finished work. A notched straight edge ten (10) feet in length shall be used for testing each transverse joint, prior to and subsequent to final finishing. The straight edge shall be placed over the joint, parallel to the center line of the pavement and moved across from curb to curb.. When the surface of the concrete upon testing shows to be high or low, concrete will be added or removed to bring the surface its true shape. The concrete adjoining transverse joints shall be dense in character and after rolling shall be finished with a wood float, which is divided through the center and which will permit finishing on both sides of the filler at the same time. finished surface of the concrete shall not vary more than one -eighth (1-8) of an inch from a two ght edge placed upon the concrete in any position. kmen shall not walk on the freshly laid concrete; and no one shall be allowed on the concrete as been worked into form and position.with a template or straight edge, until it has thoroughly EXPANSION JOINTS isverse expansion joints not less than three -eighths (318) inch or more than one-half (112) inch in all be placed across the pavement at right angle to the center line of the roadway; spaced so as Geed thirty-three and one-third (33 1131 feet apart. All expansion joints shall extend through the ickness of the pavement. In these expansion joints there shall be placed a prepared strip of bi- _ filler of the thickness hereinbefore specified for expansion joints and extending from the bottom b the pavement herein specified to the upper surface of the finished pavement. The upper edges of all 'oints and the. upper outer edges of the pavement shall be neatly troweled to a radius of one -quarter (/) rich. IZI19198 405 All metal, manholes, catch basin covers, and other fixed objects shall be separated from the concrete pavement by a joint filler of the same character as hereinbefore specified for expansion joints; which joint filler shall extend through the entire thickness of the pavement. PROTECTION As soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be spray-- ed with water; and it shall be kept thoroughly wet for at least ten days. As soon as it can be done without damage to the concrete, the surface thereof, during hot and dry weather and if unshaded shall be covered with not less than one inch of earth, sawdust, straw or other suitable and available material, which cover- ing shall be kept vet for at least four days after being placed. In dry and hot weather freshly laid con- crete shall be protected by a canvas covering until it can be sprinkled or covered, as specified. The water and concrete aggregates shall be heated if at any time during the progress of the work the temperature is, or from weather reports will likely during the next twenty-four hours drop to (35) thirty- five degrees Fahrenheit. The concrete shall be protected against freezing for at least ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established line, and their upper edges shall conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have previously been used. The pavement shall be thoroughly cleaned and open to the public as soon as the cement has set suffici- ently to receive the traffic without injury to the surf ace or body of the concrete. SURFACE DRAINAGE SEWER For the purpose of carrying off storm waters from the surface of the pavement herein provided to be con- structed„ a surface drainage sewer of vitrified, salt glazed, tile pipe shall be laid as hereinafter specified. Said sewer shall be laid in open trenches in the ground in such manner as to conform to the elevations, lines and, grades hereinafter specified. The pipe used in the construction of said sewer shall be of the type known as "Bel and Spigot" having an in- ternal diameter of nine (9) inches, the metal of which pipe shall have a thickness of thirteen -sixteenths (13116) of an inch and shall be not less than two (2) feet in length, Cylindrical, straight, smooth, thoroughly vitrified, salt glazed, free from cracks or blisters and. of the best quality and workmanship. The joints between the pipes shall be securely sealed with a mortar composed by volume of one (1) part of Portland cement of the best quality and one and. one-half (1/) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The; joints between said pipes shall be wiped and pointed inside the pipes. The interior of the pipes shall be kept free I from dirt or refuse of every description and shall be left clean at the completion of the work. The open trenches excavated, to receive said sewer, shall be made at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least (6) inches clearance on both sides of the pipes for sealing joints. The materials excavated shall be kept compactly along the sides of the trench and shall he backfilled as soon as practicable in order to occasion the least possible inconvenience to the public in use of the street or alley as the case may be. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed, under and around the pipes. The open and unconnected ends of said sewer shall each be securely closed with a salt glazed, vitrified the disc, and sealed in the manner above specified for joints 1)etween pipes. Said sewer or sewers as the case may be shall be lai d as follows, to -wit: In and along the center line of the alley north of and adjoining lots eight (8), nine (9), ten (10) and eleven (11), from and connecting with the sewer now in place in and along the center line of the Alley east of Orrington Avenue to the center line of the Alley west of Sheridan Road. The internal diameter of this sewer shall be nine (9) inches. At its connection with said sewer in the Alley east of Orrington Avenue, the elevation of the inside bottom of this sewer shall be ten and forty - ,hundredths (10.40) feet above the datum plane hereinbefore defined and the grade thereof shall rise thence at a uniform rate to an elevation of eleven and forty hundredths (11,40) feet above said datum at its ,terminus. _ CATCH BASINS For the'purpose of receiving storm waters from the surface of the pavement herein provided to be con- structed tb"16 (3) catch basins shall be constructed at the necessary points along the center line of said pavement. Said Catch basins sholl be constructed of hard burned sewer brick and placed vertically'in the ground in such manner as to bring the tops of the iron covers herein required for said catch basins, when In place, to. the upper surface of the proposed pavement. Said catch basins shall be cylindrical in shape liaving an internal diameter of thirty-six (36) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by means of three (3) header courses of brick, laid endwise and horizontally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catch basins. Said catch -basins shall have walls eight (8) inches thick built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch - basins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 112) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch -basins shall each rest on a solid bottom of two (2) inch pine planks, laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure.fifty-four (54) inches in diameter and shall have its upper side placed four(4) feet below the upper surface of the brick wall for said catch -basin. Said catch -basins shall be connected with the sewer, or sewers as the case may be, now existing, or herein provided to be constructed, as the case may be, in and along the center line of the said pavement, along which center line and over said sewer or sewers, the respective catch -basins are to be constructed. Said catch -basins shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed tile pipe having an internal diameter of six (6) inches and of the type known as "Bell and Spigot," the metal of which pipes shall be three -fourths (314) of an inch in thickness and shall be not less than two (2) feet in length. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipe shall be se- curely sealed with a mortar of the quality herein required for brick walls in catch -basins. Each catch -basin connection shall start in a six-inch "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the said sewer at a point not less than eight (8) feet in advance of the center of the catch -basin measured along and in the down stream direction of the sewer. The pipe shall be laid true to line and grade and the connection shall enter the catch -basin through the brick wall thereof at a point two and one-half (2 112) feet above the top of the plank bottom of said catch -basin. i The pipe entering the catch -basin through the brick wall thereof, shall be an elbow with the bell end ` turned downward inside the catch -basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be back -filled as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the alley. The trenches shall be promptly back -filled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch -basins shall each be equipped and fitted with a circular cast iron grate cover weighing not less than three hundred and sixty (360) pounds. Said grate to be so constructed as to freely admit water from the surface of the pavement to the catch -basin) and having a• vertical height of nine (9) inches, the opening in said cover shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) inches at the top thereof. The diameter of the lid or grate for said covers shall be 22 314 inches. Said catch -basin covers herein provided to be furnished and set shall rest on the walls of the catch -basins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catch -basins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the upper surface of the pavement at points where said catch -basins are located. Said catch -basins herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: *%,&ey a at sae *t a ,co. eme.wt a lot line A l-ey West hisata lot line of Orrington Ave: point ten (10) feet south of the south lot 1*ae of Library point one hundred thirty-five (135) feet north of the north of Foster Street. of Sheridan Road: point one hundred of Foster Street. ninety (190) feet north of the north 07 MANTROIX One brick manhole shall be built of hard burned sewer brick, upon the sewer or sewers, as the case may b hereinbefore provided to be constructed and, shall be located: at the point hereinafter specified. Said manhole shall. - placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbefore spec" fled in such manner as to bring the top of the iron cover herein required for said manhole when in place to the u per surface of the proposed pavement. Said manhole shall be cylindrical in shape having an internal diameter thirty-six (36) inches at the upper surface of the base and upward to the lowest header course being uniforml` drawn in to twenty-four (24) inches in diameter at the top of the masonry by means of six (6) header courses of.. brick laid endwise and horizontally, the diameter being d.ecreased uniformly by each course to fit the iron cover' hereinafter specified to be furnished and set on the walls of said manhole. The walls of said manhole shall rest upon the base thereof without offsetting and shall be eight (8) inches thick, built (except as above specified for header courses) of alternate vertical and horizontal courses of brick. The brick used in the construction of said. manhole shall be thoroughly wetted with water before being placed and -shalt he laid in a mortar composed by v61- ume of one (1) part of Portland cement of the best quality and one and one-half (1/) parts of clean sharp san(f., mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manhole shall begin at a point five (5) inches below the outside bottom of the sewer herein - before specified and shall extend upward to said outside bottom and along the sides of said sewer to a point mid- ivay between the top and bottom of said sewer, said base to be circular in form, th ediameter of which base shall he fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manhole shall be neatly removed leaving the lower half thereof to form the invert of the manhole. Said manhole shall be equipped with a circular casti ron cover having a tight lid, weighing not less than five hundred and forty (540) pound's, of the type known as "Chicago City Standard Heavy" having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two (22) and three -fourths (Y4) inches at the top thereof. Said manhole cover herein specified to be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified, and shall rest on the top of the walls of said manhole which walls shall be built to such height as will bring the top of the cover when set in place, to the sur- face of the pavement hereinbefore specified. Said manho le herein provided to be constructed, referring to the ver-:- tical axis thereof, shall be located as follows Alley es.et of Qrqrington kvenne; At & potnt ,ens abb*V J1,00) 1"-t o9rth lof the ikert of, YostYoster, 91060&* ADJUSTMENT OF PRESENT MACADAM PAVI\G The present macadam paving where the same adjoins the proposed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and, quality composing said macadam paving and, having been thoroughly compacted it shall form a base or founda- tion for a bituminous macadam pavement to be placed thereon. The upper surface of said base or foundation - when completed shall be two (2) inches below• the finished grade of the proposed improvement where same adjoins said macadam paving. Upon the base or foundation, prepared as hereinbefore specified, there shall be spread, a layer of clean, hard broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer -of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of two (2) inches thereof being spread, on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall he given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rotting of the limestone is finished, and the layer thereof is dry, there shall be applied to the limestone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic ce-, ment in such quantities as to insure not less than one(1) gallon thereof being evenly spread on and used; in each' � and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the sur- face to which the same shall have been applied shall be uniformly covered with dry and hard limestone screen- ings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size ranging from the largest particle that would, pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diameter. They limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to` which same is applied. Immediately following the spreading of these limestone screenings the paving so, covered, shall be given a thorough rolling with a roller of the weight and type hereinbefore named. This roll- ing shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which, same is applied. The surface of the paying shall next be thoroughly cleaned of all loose stone, dart, leaves or other foreign material thereon. After being so cleaned there shall be applied to the surface a second application of asphaltic l cement of the same kind and quality as that used in the first application. This second application shall be' sufficient in quantity and so applied and spread, as to insure not less than three-quarters (/) gallon thereof being evenly spread and used on each and every square yard of paving. Immediately after the second, appli- cation of asphaltic cement is made and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three- fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such manner ,and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard, thereof being ti 1. spread and used on. each and every square yard of ipav�n� ' r A final rolling of the paving shall closely follow the spreading thereon of these granite chips. Theal rolling ,shall be done with a roller of the weight and type hereinbefore named. .The final rolling shall continue ',until the surface of the pavement is thoroughly compacted, and brought to a surface, free'from depressions and i true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is, operating. The asphaltic cement used in the improvement herein provided, to he made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following requirr - -=pients and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural asphalt `and a flux to be tested with and proven the hest suited to the asphalt to be used; and shall not be a by-product 'pf the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully ;in the construction of sheet asphalt paveinents, and shall possess such chemical and physical properties and —be so prepared for use as to best adapt it to the climatic and traffic conditions of the roadway on which it is to be used. (2). Its specific gravity shall. be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 i.grams for one minute. F (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be present f in homogeneous solution, no granular constituent being present. ! (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit i for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. r (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at [least 95%. ': (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 981 () 1 p /z % shall ''be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in petroleum naptha, at the'air temperature to the ex- j tent of not less than 72 per cent. i. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per ..cent of fixed carbon or residue coke. j MISCELLANEOUS SPECIFICATIONS BRICK 4s j All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. `i _ SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five k(25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five K5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be -h, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated icles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for .Lfineness, soundness, initial setting and tensile strength to -wit; Fineness. The cement shall be so ground that 92 %o will pass through a standard sieve, having 10,000 ,meshes and 757Jo will pass through a sieve having 40,000 meshes per square inch. py Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight Per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. E Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: tZt9i98 t dement Age Strength 24 hours in moist air .............:......................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength ' 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and, at such time and place as will enable required tests, to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The tile ,pipe to be used in the improvement herein provided to be made shall be of the bell and spigot, type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said 'pipe shall give a clear ring when lightly struck. with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the imprrovement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of four hundred ninety-six and fourteen hundredths dollars ($ 496&14 ), s being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of four hundred ninety-six and fourteen hundredths shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into ten installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to laNv until paid. Section >. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the, rate of six per centum per annum, payable annually, and signed by the :Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve= ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its assage. Of Elaf�t Adomec} by the Cit7 it of the City theY of- A. D. 19 -- A Droved _ _ _ _ � l9 � � _ _ filrp Celt ---_ L Recommendation, Estimate and Ordinance. RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS.. To the Mayor and.Aldermen of the City of Evanston in the City Council Assembled We herewith submit an ordinance providing tEat ,the roadway of LIVINGSTON STREET from the west lot line of EASTWOOD .AVEM E to the east lot line - of EROADWAY AVENGE r also the roadways ,of -Intersecting alleys lying within said portion of said LIVINGSTON STREET'and.not included in•the roadway thereof* in the City of Lpanstons County of Cook, State of Illinois, -be improved by grading* curbing with a Portland cement concrete curb, paving with a,bitum- inous macadam pavement ]aid on a Portland cement concrete base or foundation, constructing necessary surface drainage sewer of vitri-, fiedi salt 'glazed, the pipe, having an internal diameter of nine 9) inches (the metal of which.Pipe shall be thirteen-aixteenthe .(l3/16) of an inch in thickness), brick catch basins and nine -inch }internal diameter,•vitrified,o salt glazed, tile pipe catch basin �,ctoiinections to surface drainage' sewer, adjusting catch basins., man-, h hole and present m eadam'paving adjoining and connecting with the proposed improvement.; together -with an estimate of the cost of said improvement and recommend the -passage of said ordinance and the making of the improvement contemplated therein. Respectfully submitted, m. .................................. OV0400*0000 A*&*# A of �*900*000*** Board of Vocal improvements of the City of Evan aton, Illinois. - Dated, Evanston, Illinois, 5 , 19a23. ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled : The Board of Local Improvements of the City of Evanston having adopted a resolution that the roadway of LIVINGSTON STRIET' from the west lot line of EASTWOOD- AVBNM to the east lot line of BROADWAY AV.E?W, also the roadways of intersecting allays lying within said portion of said LIVINGSTON STREET and not included in the roadway thereof. in the City of Evanston,, County of Cook, State of Illinois, be improved by grading, eurbi,ng writh a rortland cement concrete curb, paving with a bitum- inous m3oadam-pavement laid on a Portland cement concrete base or foundation# constructing necessary surface drainage sewer of vitri- fied, salt lazed, the pipe, having an internal diameter of nine (9) inches Ithe metal of which Ape shall be thirteen-sikteenths (13/16) of an ineh.in thickneasTs brick catch basins and nine -inch internal diametere.vitrifiedo. salt glazed, tile pipe catch basin oonnec.tions to surface drainage sewer,, adjusting catch basins, man- hole and present macadam paving adjoining and connecting with the proposed improvement; and presented to the City'Council of the City of'Lvmnston a recommendation that such improvement b'e made, I..here- wiwh dubmit an estimate of the cost of said improvement as described; Aiiid' resolution, including labor, material and lawful expenses , attending the proceedings for making sai& improvement and the co.s3t of making and -collecting the assessment, as, provided by law, viz:_ IZ191W 411 "1j S one yds. of grsdift O Sl.l0 pelt er• yd. a ....... $ 1 &356 * 28 1UO Use ft. of Portland cement oonorete curb laid ' somplets is place a $1.28 per line ft........'•. 10650.00 1810 sq& yds. of Portland cement concrete base or foundation. laid complete in place a $1.80 per sq• yd................•..••.........•.......•.. 3&2"100 1810 sqo yds. of bituminous aseadan paving laid con- V&Ste in plaoo a $1e75 per sq. yd.............. 31,167050 60 tins ft6 of alsooinah internal diameter& vitri- fled, salt glazed, tile pipe outface drainage sewer• (average depth of out five (5) feet) laid complete in place, including tronching, back - filling and removal of surplus excavation 0 $2640 per line ft .............................. 14d.04 2 brick catch basins including oast iron covers& plank bottoms# excavation* baokfilling and removal of surplus sxoavation, complete in place a $65e00 sash...... .......................,............... 170.00 40 line fto of niao••imoh internal diameter& vitrified, salt glazed• tilo pipe catch basin connections to surface drainage sewer (average depth of out five (5) feet) including trenchingg baokfilling and removal of surplus oxeavation& complete in place A $1.75 per line ft.............................. 70.00 4 catch basins adjusted to grade 0 $15.00 each..... 60.00 1 Manhole adjusted to grade a $15*00 each.......... 15000 120 sqe yds. of m eadam , paving adjusted 0 $1.60 per sq. l►+d...........a ............................... 192.00 for lawful expenses attending the proceedings for =king said Improvement and the cost of waiting &W collecting the assesement therefore not to e=oeed six (6) per con - tun of the above, to -*Its $l0 &082.75.................. 024622, 4,6,. Tetal.•• •.•••••#10&687.'t�. And I hereby certify that in My opinion the above estiaate does not exceed the probable cost of the above proposed improvement and the lawful expenses attending the sauce 7 .'i�. 2r ........ ..................... Znginser of the Board of Local In- provements of the City of $vanston. Dated, $vanston, Illinois. X?X,'t� sd, 9 An Ordinance, p il* that the roadway of UTIMTOp SMUT from the meat lot Us* of BkMM(ND AVXM to the east lot line of MOADYIY Ai XM*o a3,se this roadways of intersecting. alloys lying Within said ports+ S of said ZVXKGMN WMT and not inalmAod in the r4wAVay th"oef s In the City of Nvanston, County of Cook„ State of Illinois, bi"- I roved grading# sorbing wit h th a Portland cement oonorits owfto. paving with a bite ainous saead" pavement laid on a kortland *saw 003oroto bass or foundations consructing necessary surfacs drams age oswsr of Vitrified, salt glazed, the Mah e& haTisg ab iateraal tot of nine (9) inches (the metal of pipe sball'be tbirteen•sixteenths (13/16) of an inch in Udelmess ), brick' Satoh basins and nine••inah internal diasstes. vitrified, salt glasuedv tslo pipe catch basin connections to surface drainage sevoyt & &Quote lag catch basins, manhole and present MGSAam paving adjoiaing And connecting with the proposed imparoveaaat. 33 IT MAMD BY TZ3 CITY COUNCIL Of TIM CITY OF BYANYSTONs BBQTIOS 1* that a local iM "veamnt shall be =A* i1012 tlas City of Bvanston & Conoty of Cook # BUte of Illinois & the ias►UMO & obaracter & leamlitlr &tad desoription of iddeh level improvesent. is as fellows, to-4dt s 412 That the roadway of LIVIRGSTON STET from the crest lot ..line of rASTWOOD AMMUS to the east lot line of BROADWAY AVE'RuE; - .also the roadways of intersecting allays lying within said portion of said LIVINGSTOR STFOM and not included in the roadway thereof, in the City of zvanston, County of Cook, state of Illinois, be and the same are hereby ordered improved as follows: LOCATION OF ROADWAYS The center line of the roadways herein provided to be paved shall coincide with the center line of the respective streets and alleys within which said roadways are included. WIDTH OF ROADWAYS The width of the roadways herein provided to be paved shall be as follows, measured in feet from back to back of the curb hereinafter specified and at right angles to the center line of the respective street or alley, as the case may be, to -wit: Livingston Street: At the west lot line of gastwood Avenue 24 feet At the east lot line of Broadway Avenue. 24 feet Alley one hundred eighty (180) feet west of the west lot line of Eastwood Avenue: At the north lot line of Livingston St. 20 feet At the south lot line of Livingston Street. 20 feet Alley one hundred fifty-five (155) feet east of the east lot line of Broadway Avenue: At the north lot line of Livingston St: 20 feet At the south lot line of Livingston St. 20 feet The width of roadway at intermediate points shall be respectively proportional to the foregoing. GRADE OF ROADWAY AND CURB The grade of the roadways herein provided to be paved, when finished, and the grade of the top of the curb hereinafter specified, when completed and set in place, are hereby established as follows, measured in feet and dec- imal parts of a foot above the datum plane of the City of Evanston, to -wit: Transverse Section of Roadway. Crown Line. Gutter Line. Top of Curb. Livingston Street: At the west lot line of Eastwood Avenue. 25.65 25.15 25.58 At a point fifty (50) feet west of the west lot line of Eastwood Avenue. 25.50 24.90 25.70 At a point one hundred eighty (180) feet west of the west lot line of Eastwood Ave. 26.15 25.75 26.00 At a point two hundred (200) feet west of the west,lot line of Bastwood Avenue. 26.15 25.75 26.00 At a point three hundred twenty-five (325) feet west of the west lot line of - Eastwood Avenue. 25.72 .25.12 25.87 At a point one hundred seventy- five (175) feet east of the east lot line of Broadway Ave.26.40 25.90 26,40 At a point one hundred fifty- five (155) feet east of the east lot line of Broadway Ave.26.40 25.90 26.40 At a point one hundred forty- five (145) feet east of the east lot line of Broadway Ave.26.30 25.80 26.45 Ai the east lot line of Broadway Avenue. 27.35 26.95 27.20 -- - - - 413 Alley one UVndred 7. (U* feet � the w,04* 304 �'i of lastwood Avenue: � At th.9 north lot line of Livingston St. 26.60 26.25 26.50 - At the south lot line of Livingston St. 26.60 26.25 26.50 Alley one hundred fifty-five (155) feet east of the east lot line of ltroadway Ave.: At the north lot line of T;ivingeton St. 27.05 26.65 26.9'a At the south lot line of Livingston St. 27.05 26.65 26.10:� The grade of the crown line, gutter line and top of curb at intermediate points shall be respectively i proportional to the foregoing. The datum plane hereinafter mentioned is the plane of low water mark of Lake Michigan in the year A. D., 1847, as established by the Trustees of the Illinois and !Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the 'Sherman Avenue entrance to the building known as City Hall, located at the north-west corner of Davis Street and Sherman Avenue, in said City of Evanston. I , The crown line hereinbefore mentioned shall be identical with the center line of the respective road- ways when completed. The gutter line hereinbefore mentioned shall be identical with the line where the surface of the road- t ways when completed touches the face of the curbing on both sides of the respective roadways. The surface of the roadways herein provided to be paved when completed shall conform to the arc of a circle passing through the respective crown and gutter lines, and shall be true and symmetrical. GRADING Prior to laying down the pavement thereon, the roadways specified to be paved shall be cleaned in a thorough and workmanlike manner of all debris and rubbish, such as deteriorated pavements, crossings, box drains, culverts Wmps, etc. The sub -grade shall be prepared by excavating the soil, or filling thereupon with other and suitable soil to such depths and shapes as will insure the finished pavement being at the grade j established therefor. Spongy earth that is unfit to be left in the sub -grade shall be removed by the con- tractor without extra charge. The sub -grade shall be rolled with a suitable self-propelling roller or flooded with water, or both as may be found necessary and practicable to thoroughly compact same. Any depressions that may appear as the rolling or flooding of the sub -grade progresses shall be filled upon at the surface with suitable soil and thoroughly com- pacted as before specified. CONCRETE CURB A concrete curb shall be constructed on both sides of the respective roadways herein provided to be paved. Said curb shall consist of a mixture, by volume, of one part of Portland cement, two parts of sand and four parts of crushed gravel or stone. Except that the top and exposed roadway face of the curb shall be surfaced to a depth of one-half inch with a mortar composed of two parts of Portland cement and three parts of clean, sharp sand of the sizes and quality hereinafter specified for the sand to be used in making this curb. The crushed gravel or stone specified for the body of the curb shall be clean, hard, free from dust, loam, vegetable or other deleterious matter, and shall show sharp edged cubical fracturing. This crushed gravel or stone shall be of variable sizes, grading from a maximum dimension of one inch down to a minimum of one-fourth inch, and so proportioned that the particles capable of passing through a screen of three -fourths inch mesh will fill the voids in the particles retained on such size screen, but without more than ten per cent excess of the smaller particles. The sand specified for the curb shall be free irom.clay, loam, vegetable or other deleterious matter. The grain shall be angular, and shall range in size from one -quarter inch down to the finest, but not more than 3 # per cent shall pass through a seive having (100) one hundred meshes per lineal inch. The sand shall be of such quality that mortar composed of one part of the cement hereinbefore specified y and three parts of the sand, by weight, when made into briquetts, will develop a tensile strength at least equal to the strength of a mortar of the same consistency and proportions made with the same cement and Standard Ottawa sand. The Portland cement specified for the curb shall be of such quality that- representative samples collected form the shipments made for the job shall be capable of passing the tests for fineness, soundness, initial. setting, and tensile strength hereinafter set forth for Portland cement. The sand and crushed gravel or stone shall be clean when delivered on the job and shall be kept clean until used. In no case shall the sand and crushed gravel or stone when used, contain frost or lumps of froz- en matter. . —_J _4.14 Forms Ishall be used in constructing the curb. The forms shall be sound, free from warp, and of suffici- ent strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established lines and grades. Wooden forms shall be thoroughly wetted and metal forms shall be oiled be- fore concrete is deposited against them. All mortar and dirt shall be removed from forms that have pre- viously been used. The ingredients specified for the body of the curb shall be mixed in a batch machine mixer of a type that will insure a uniform mixture and product. Clean water, free from oil, acid, alkali, or vegetable matter shall be admitted to 'the mixer in sufficient quantity to produce a concrete of a consistency such that mortar %vill flush to the surface under light tamping, but which can be handled without causing a separation of the crushed gravel or stone from the mortar. Provided, that on such portions of the work as it may be imprac- ticable to use the machine mixer, thorough and efficient hand mixing will be allowed. The equipment used, if any, for hand mixing shall be as specified for mixing the surfacing mortar. The ingredients specified for the mortar to be used in surfacing the top and exposed roadway face of I the curb shall be mixed on a movable, tight iron platform, of ample size to accommodate the manipulations specified, without getting the ingredients off the platform or mixed with dirt. The Portland cement and sand specified for surfacing portions of the curb shall be thoroughly mixed on the platform with hoes or shovels, and until the color becomes uniform, after which sufficient water, of the quality hereinbefore required, shall be gently added, while the mixing continues, to produce a stiff and homogeneous mortar. The concrete and the finishing mortar after being prepared as specified shall be promptly deposited and compacted in the forms, in layers not exceeding six inches in depth. The back of the curb shall be worked with a spade to secure a well filled surface. The front upper edge of the curb shall be rounded to a radius of one and one-half inches in such manner that the planes of the top and roadway face of the curb will be tan- gent to the curve described by said radius. As soon as the cement has sufficiently set, the forms shall be re- moved from the face of the curb; and the face mortar shall be promptly troweled down hard and smooth, drawing the cement from the crushed gravel or stone as little as possible. The gloss shall be removed with a wet brush. The curb shall be constructed in sections not less than four feet nor more than six feet in length. In con- structing the curb, all templates used to form the sections shall be kept perpendicular to the top of the curb. All joints shall be neatly tool finished. The joint marking shall correspond to the joint made by the tem- plates. The curb shall be twenty-four inches in depth, and the thickness shall vary uniformly from six inches at the top to eight inches at the bottom of the curb. The curb shall be built in such manner that the road- way face will be vertical; that the t op will be at the grade hereinbefore established; and that the back of the curb, at the top thereof shall be on the lines hereinbefore established. The curb at intersecting streets and alleys shall be constructed to true curves tangent to the intersecting curb lines proper. The radius of the curve to which the back of the curb shall conform shall be ten feet for intersecting street and six feet for intersecting alley curb lines. Except as above specified, for intersecting street and alley curb lines, the curb shall be constructed paralleled to the center line of the respective road- ways herein provided to be paved. The curb shall be constructed at such distances from the center line of the roadways, herein provided to be paved, as will give the respective width of roadways hereinbefore speci- fied and established, when measured from back to back of curb in the manner and on the lines hereinbefore ( set forth. Trenches shall be excavated to sufficient width and depth to receive the curb and necessary moulding frames. Wherever other than sandy soil is encountered the curb trenches shall be excavated to a depth of six inches below the bottom of the curb and shall be re -filled to such depth with sand or cinders. The sand or cinders shall be compacted with water or by hand tampers. The frames shall be securely fastened in place and shall be accurately brought to line and grade before they are filled with concrete. The grade and line to which the frames are to be set shall be such as is necessary to insure the finished curb being true to the lines and grades hereinbefore established therefor. PORTLAND CEMENT CONCRETE FOUNDATION Upon the sub -grade prepared as hereinbefore specified, shall be constructed a Portland cement concrete base or foundation, five (5) inches thick. The concrete shall be composed by volume, of one (1) part of Portland cement; three (3) parts of clean, hard grained, and sharp sand; and five (5) parts of clean, hard limestone or gravel broken or graded so as to yield a range of sizes (in longest dimension) from two (2) inches down to one-half (1-2) inch, and so proportioned as to produce a maximum number and minimum volume of interstices in the aggregate. The concrete shall be prepared by mixing the cement, sand and stone or gravel in an approved batch mixer with sufficient clean water and mixing sufficiently to produce a plasticity best suited to the condi- tions of weather and soil. The concrete mixed as above specified, shall be promptly spread on the surface of the sub -grade to the required thickness, and to such shape and grade as will insure the upper surface of the foundation after be- ing thoroughly compacted by rolling or tamping, being parallel with and three (3) inches below the grade hereinbefore specified for the finished roadway. The upper surface of the foundation shall not be troweled smooth but shall be left moderately rough to grip the bituminous macadam pavement specified to be laid thereon. %Z1919g � 415 BITUMINOUS MACADAM PAVEMENT - Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard, broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly- spread, sand in sufficient quantity to insure a thickness of three (3) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be evenly applied to the limestone ( at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one and three quarters (1 3-4) gallons thereof being evenly spread on and used in each and every square yard of the roadway, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size rang- ing from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diam- eter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screen- ings the roadway so covered, shall be given a thorough rolling with a roller of the weight and type herein - before named. This rolling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the roadway shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be evenly applied to the surface of the pavement a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread as to insure not less than three quarters (3-4) gallon thereof being evenly spread and used on each and every square yard of road- way. Immediately after the second application of asphaltic cement is made and spread and progressing therewith there shall be evenly spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one - eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of the roadway. A final rolling of the roadway shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the roadway is thoroughly compacted, and brought to a surface, free from de- pressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement herein provided to be built, shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The gutters shall be kept trimmed to the required thickness and grade as the work progresses. The cubic yardage of stone, herein required, shall be verified by measurement of volume thereof in cars, or other conveyances, transporting same to said City, and prior to initial unloading, and shall be fur- ther verified by measured length of dumps and height of grade marks on the work. The stone shall be hauled on to the work in boxes of uniform size and contents and of such shape as to enable an easy and exact determination of the volume contained therein to be made on the site. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following require- ments and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural as- phalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical. properties and be so prepared for use as to best adapted to the climatic and traffic conditions of the roadway on which it is to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit un- der 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various Hydrocarbons composing it shall be pres- ent in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described_ 416 (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95%. (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98 /% shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in 75 degrees Baume petroleum naptha, at the air temperature to the extent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. SURFACE DRAINAGE SEWER For the purpose of carrying off storm waters from the surface of the pavement herein provided to be con- structed, a surface drainage sewer of vitrified, salt glazed, tile pipe shall be laid as hereinafter specified. Said sewer shall be laid in open trenches in the ground in such manner as to conform to the elevations, lines and, grades hereinafter specified. The pipe used in the construction of said sewer shall be of the type known as "Bel and Spigot" having an in- ternal diameter of nine (9) inches, the metal of which pipe shall have a thickness of thirteen -sixteenths (13116) of an inch and shall be not less than two (2) feet in length, Cylindrical, straight, smooth, thoroughly vitrified, salt glazed, free from cracks or blisters and of the best quality and workmanship. The joints between the pipes shall be securely sealed with a mortar composed by volume of one (1) part of Portland cement of the best quality and one and, one-half (1/) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The joints between said pipes shall be wiped and pointed inside the pipes. The interior of the pipes shall be kept free from dirt or refuse of every description and shall be left clean at the completion of the work. The open trenches excavated to receive said sewer, shall be made at least twelve (12) inches wider than the j exterior diameter of the pipes so as to give at least (6) inches clearance on both sides of the pipes for sealing joints. The materials excavated shall he kept compactly along the sides of the trench and shall be backfilled as soon as practicable in order to occasion the least possible inconvenience to the public in use of the street or alley as the case may be. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed, under and around the pipes. The open and unconnected ends of said sewer shall each be securely closed with a salt glazed, vitrified tile disc, and sealed in the manner above specified for joints b etween pipes. Said sewer or sewers as the case may be shall be lai d as follows, to —wit: i in and along the center line of Livingston Street from and connecting l h the sewer now in place in and along the center line of said Livingston eet at a point three hundred seventy-five (375) feet Beet of the west line of Eastwood Avenue, west a distance of sixty (60) feet. The ernal diameter of this sewer shall be nine (9) inches. At its eon- tion with the aforesaid sewer in Livingston Street. the elevation of inside bottom of this sewer shall be twenty-one (21.00) feet above datum plane, hereinbefore defined, and the grade thereof shall rise nce at a uniform rate to an elevation of twenty -on* and forty bundredths 121.40) feet above said datum at its terminus. CATCHBASINS For the purpose of receiving storm waters from the surface of the roadway or roadways, as the case may be, herein provided to be paved two catchbasins shall be constructed at the necessary points along the sides of the afore- said roadway or roadways. Said catchbasins shall be constructed of hard burned sewer brick and placed vertically ;in the ground in such manner as to bring the tops of the iron covers herein required for said catchbasins, when in place, to the upper surface of the proposed curbing. Said catchbasins shall be cylindrical in shape having an internal diameter of forty-two (42) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty- four (24) inches at the top of the masonry by means of eight (8) header courses of brick laid endwise and horizon- tally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catchbasins. Said catchbasins shall have walls eight (8) inches thick, built (except as above specified for header courses) of 'alternate vertical and horizontal courses. The, brick used in the construction of said catchbasins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (ly) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch- )asins shall each rest on a solid bottom of two (2) inch pine planks laid closely in single thickness and securely spiked _0 two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. 417 The said bottom shall be madc circular in form, and shall measure ixty (inches in dian ei er and shall have it upper side placed five and one-half (5/) feet below the upper surface of the brick wall for said catchbasins. Said catch basins shall be connected with the sewer or sewers, as the case may be, now existing or herein provided to be con- structed, as the case may be, in and along the center line of the said roadway or roadways at the side of which th respective catchbasins are to be constructed. Said catchbasins shall be connected with the sewer or sewers aforesai by, means*of vitrified, salt glazed, tile pipe having an internal diameter of nine (9) inches and of the type known as' "Bell and Spigot" the metal of which pipe shall be thirteen -sixteenths (13/16) of an inch in thickness and shall be not less than two (2) feet in length. Said pipe shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipes shall be securely sealed with a mortar of the quality herein required for brick walls in catch -basins. Each catchbasin connection shall start in a nine (9) inch vitrified, salt glazed, tile pipe "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the sewer at a point not less than six'(6) feet in advance of the catchbasin, measured along and in the downstream direction of the sewer from a point on saic sewer directly opposite the catchbasin. The pipes shall be laid true to line and grade and the connection shall enter the catchbasin at a point two and one-half (2/) feet above the plank bottom. The pipe entering the catchbasin through the brick walls thereof shall be an elbow with the bell end turned downward inside the catchbasin to form a trap. The pipe shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be backfilled as soon as prac- ticable in order to occasion the least possible inconvenience to the public in use of the street. The trenches shall be,, promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed, under and around the pipes. Said catchbasins shall each be equipped and fitted with a castiron cover weighing not less than three hundred I! thirty (330) pounds and having a vertical height of thirteen (13) inches, which cover shall be of the same size and pattern or equal in size, quality and workmanship to the castiron covers now in use on existing-catchbasins in Dempster Street between Ridge Avenue and Dodge Avenue in said City of Evanston. Said catchbasin covers herein provided to be furnished and set shall rest on the walls of the catchbasins herein specified to be constructed. Said covers shall be 1 imbedded in a mortar of the quality herein required for brick walls in said catchbasins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the elevations hereinbefore specified for the top of the curb at the nninCATCH BASINS TOsit1BE ADJUSTED AND BROUGHT TO GRADE The 4 brick catch basins now located along the sides of the roadway or roadways, as the case may be, herein provided to be paved, shall have their covers raised or lowered as the case may be in such manner as to bring the tops thereof to the surface of the adjacent ground. Such adjustments as may be necessary! shall be made to the walls of said catch -basins with hard burned sewer brick laid in a mortar composed by ; volume of one (1) part of Portland cement of the best quality and one and one-half (1%) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. Said covers shall be imbedded in - mortar of the quality hereinbefore specified in adjusting said walls. Said catch -basins shall be connected to the curbs by means of sewer pipes of the kind, size and quality and laid in the manner hereinbefore specified for pipe used in constructing surface drainage sewers. Openings shall be made in curbs at points of said connections in such manner as to permit free and un- interrupted passage_ of storm waters, from the surface of the pavement hereinbefore specified, to said basins. ADJUSTIMENT OF PRESENT MACADAM PAVING The present macadam paving where the same adjoins the proposed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and quality composing said macadam paving and, having been thoroughly compacted it shall form a base or founda- tion for a bituminous macadam pavement to he placed thereon. The upper surface of said base or foundation iviien completed shall be two (2) inches below the finished grade of the proposed improvement where same adjoins said macadam paving. Upon the base or foundation, prepared as hereinbefore specified, there shall be spread, a layer of clean, hard broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension k of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of two (2) inches thereof being spread, on and used in each and -every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial* rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be applied to the limestone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic ce- ment in such quantities as to insure not less than one(1) gallon thereof being evenly spread on and used, in each and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the sur- face to which the same shall have been applied shall be uniformly covered with dry and hard limestone screen- ings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size ranging from the largest particle that would, pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diameter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screenings the paving so ,-covered, shall be given a thorough rolling with a roller of the weight and type hereinbefore named. This roll- ing shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. 418 The surface of the paving shall next be thoroughly cleaned of al.l loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be applied to the surface a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread, as to insure not less than three-quarters (/) gallon thereof being evenly spread and used on each and every square yard of paving. Immediately after the second, appli- cation of asphaltic cement is made and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three - fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard, thereof being evenly spread and used on each and every square yard of paving. A final rolling of the paving shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the pavement is thoroughly Fompacted, and brought to a surface, free from depressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following require- ments and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than silty -five per cent refined, solid natural asphalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully i in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so prepared for use as to best adapt it to the climatic and traffic conditions of the roadway on which it is to be used. (2). Its specific gravity shall, be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be present in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95ofo. (8). Of the bitumen. of the asphaltic cement which is soluble in carbon disulphide at least 98y2%o shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in petroleum naptha, at the air temperature to the ex- tent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes F and valve chambers for this improvement shall be har d burned server brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other. deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and pro portion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall Crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit. Fineness. The cement shall be so ground that 92 7o will pass through a standard sieve, having 10,000 ` meshes and 75% will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, hen mixed with twenty-eight per cent (by weight) of water, shall not take w initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten .a hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement ; Age Strength 24 hours in moist air ....................................................... 175 lbs. j 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength { 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the ,period specified. Samples of the cement proposed to be used in the Nvork shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. i SEWER PIPE The tile pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly,vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that i would be imposed upon it from within or without. Said 1pipe shall give a clear ring when lightly-strucki with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in.length. 1 The thickness of the metal of which pipe shall be respectively as follows: ; For pipe having an internal diameter of nine (9) inches not..rless than thirteen -sixteenths (13116) of an' inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the impriovement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. -Section 3.- That said improvement shall be made and the whole cost thereof including the sum of six hundred four and ninety-six hunoedths dollars ($ 6+0+l A6 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. -D. 1897, and the amendments thereto, and that said sum of six hundred four .and ninety-six hundredths dollars ($ 604..96 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into telrl, installments in the manner provided by the statute in such case made and provided, and each of said installments shall hear interest at the rate of six per centum per annum according to law until paid. Section S. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. F 420 - Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are i °hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Cot2ncil of the City of EVgttiston �) ��, gay ------ � 0 0�---�G of-- ------- A. L..�---3 Al,) roved- _ _ -- __193, �--City Clerk - .. ---------------- Mayor. Recommendation, Estimate and Ordinance. RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled : We herewith submit an ordinance providing that a combined storm ;Hater and house 'drainage sewer be constructed of vitrified, salt glassed, the pipe,, including necessary brick man- holes and brick catch basins, "Y" branches for house and catch basin connections to sewer, in GRANT STREET AND GRANT STREET PRO- DUCAD WRST,, from and connecting, frith the sewer now in place in GRANT StRUT : at the center line of RIDGEWAY AVEM' to the center A -he of COW AVEMM a in HASTINGS AV NU from and connecting w 1th. the last named sewer to, a point thirty=three,(33) feet north df' the south -lot line of HARRISON STRUT, in CO11 -RR* AV.E from and conneoting Frith the sewer hereinb.efore, apeoi.ff "ed, to be con- otruated in and along as line twenty --nine (�29 fee,;t, south of and parallel with the North lot line of �2 XT' SST and: same pro- duced west, to a point thirty-three (33')- feet;* north of the south lot line of HARRISON' STRMT; together with azn,.,.estlmate of the cost of said improvoment and rseommend the passage of,said ordi- nance and the making of the Improvement contemplated therein. Rtapectfully submitted. ............................. Board of Local Improvements of the City of Evanstono Illinois, Dated. Evanston, Illinoies ,c, sd , q26. 1Z19198 4211 ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled : The Board of Local Improvements of the City of Evanston having adopted a resolution that a combined storm water and house drainage newer be constructed of vitrified, colt glazed, tile pipe, including necessary brick manholes and brick catch basins, "Y" branches for house and catch basin connections to sewer, in GRANT STREET AND GRANT STREET PRO- DUCED WEST, from and connecting with the sewer now in place in GRANT STR EET at the center line of RIDGEWAY AVEME to the center line of COWPER AVEE^IMs in HASTINGS A"NUE from and connecting with the last named sewer to a point thirty-three (33) feet north of the south lot line of HARRISON STREET, in COWPER AVEYM from and connecting with the sewer hereinbefore specified to be constructed in and along a line twenty-nine (29) feet south of and parallel with the forth lot line of GRANT STREET and same produced west, to a point thirty-three (33) feet north of the south lot.line of HARRISON STREET; and presented to the City Council of the City of Evanston a recommendation that such im- provement be made, I herewith submit an estimate of the coat of said improvement as described in said resolution► inoluding•labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assess- ment, as provided by laws viz: ESTIMATE OF COST .. . .. . d,* cfcr 725 lint ft* of 180 internal0.1vitrified. salt glmg4, the pipe sewer, including nececsary "Y"•branches for house and catch basin connections& laid com- plete in place, including trenching, backfilling and removal of surplus excavation (average depth Of cut eight (8) feet) 0 $3.25 per lint ft...... $2s356.25 2775 line ft, of 15" internal diameter, vitrified# salt glazed, tile pipe sewers including necessary "Y" branches for house and catch basin connections, laid complete in place, including trenchin , back - filling and removal of surplus excavation average depth of out eight (8) feet) 0 $3.00 per lint ft, 80325.00 10 brick manholes including cast iron covers# exca- vation, backfilling and removal of surplus exca- vation, complete in place ® $60.00 each........ 800.00 24 brick catch basins including cast iron covers, connections to sewers, plank bottoms, excavation, baokf illing and removal of surplus excavation. . complete in place ® $80e00 eaoh................ 1.920.00 For lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment therefor, not to exceed six (6) per cent of the above. to -.writ: $13,401.25..6.0. 804.07 Total........... $14*205.32 And I hereby certify that in my opinion the above estimate ,does not exceed the probable cost of the above proposed improvement and the lawful expenses attending the same. Dated, Evanston, Illinois, ,s/d-Jiq�� .................................... Engineer of the Board of Local Im- provements of the City of Evanston. 422 An Ordinance. Providing that a combined storm water and house drainage edwer•be 'constructed of vitrified, salt glazed# tile pipe, including necessary 'brick ra.nholes and brick catch basins, "Y" branches for house and­r catch basin connections to sewer; in GRANT STREET AND GPUM STREET. PRODUCED '!PEST# from and connecting with the sever now in place in GRANT STREET at the center line of.RIDGEWAY AVENUE to the center line of COWPER AVENUE, in HASTINGS AVENUE from and connecting with the last named sewer to a point thirty-three (33) feet north of the south lot line of HARRISON STREET, in COWPER AVER from and connecting with the newer hereinbefore specified to be constructed in and along a. line twenty nine (29) feet south of and parallel with the North lot line of GRANT STREET and same produced nest, to a point thirty-three (33) feet north of the south lot line of HARRISON STREET. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. That a local improvement shall be made Within the City of Evanston* County of Cook. State of Illinois, the nature, character, locality and description of which local improvement is as follows# to -wit: That a combined storm water and house drainage sewer be constructed of vitrified, salt glazed,.tile pipe, including nec- essary brick manholes and brick catch basins# "Y" branches for house and catch basin connections to sever, in GRANT STREET AND GRANT STREET PRODUCED WEST, from and connecting with the sewer now in place in GRANT STREET'at the center line of RIDGEWAY AVENUE to the center line of GOWPER AVENUE # in HASTINGS AVENUE from and connecting with the last named sewer to a point thirty-three (33) feet north of the south lot line of HARRISON STREET, in COWPER AVENUE from and connecting with the sewer hereinbefore specified to be constructed in and along a line twenty-nine-(29) Feet south of and parallel with the North lot line of GRANT STREET and same produced crest, to a point thirty-three (33) feet north of the south lot line of HARRISON STREET, to -wit: A combined storm eater and house drainage sewer made of vitrified, salt glazed, the pipe having an internal diameter of eighteen (18) inches, (the metal of which pipe shall have a thickness of one and one-half (1 ) inches), shall be constructed in and along a line twenty-nlue (29) feet south of and parallel with the north lot line of Grant'Street and the same produced nest# from and connecting with the sewer now in place in Grant Street at the center line of Ridgeway Avenue to the center line of Cowper Avenue. At its connection with the aforesaid sewer, the elevation of the inside bottom of this sever shall be twenty and thirty-three hundredths (20.33) feet above the datum plane here- inafter defined and the grade thereof shall rise thence at a uni- form rate to an elevation of twenty-one and seventy hundredths (21.70) feet above said datum at its terminus. A combined storm Water and house drainage sewer made of vitrified# sa t glazedh# tileh �ipp�e {havingo an fnterruLl d nmesi�er of fifteen (15 )5� �ia�1P die�hsructd in an& aY�Ong� e center line of Hastings Avenue* from and connecting with the last named sewer to a point thirty-three (33) feet north of the south lot line of Harrison Street# At itv connection With the aforesaid sewer, the ele- vation of the inside bottom of this serer shall be twenty-one and five hundredths (21.05) feet above said datum and the grade thereof shall rise thence -at a uniform rate to an elevation of twenty-five;, and sixty-eight hundredths (25.68) feet above said datum at its Lterminue. %ZO198 423 combined storm water and house drainage sewer made of `vitri_f.ied, salt glazed, tile pipe having an internal, -diameter of fifteen -(15) irvihes, (the metal of which ipe shall have a thick- ness of one and one -eighth (1 1/8) inches , shall be constructed in and along the center line of Cowper Avenue, from And connect ing.with the sewer hereinbefore rovided to be constructed in and along a line twenty-nine (29 feet south of and parallel with the north lot line of Grant Street and the same produced west, to a point thirty-three (33) feet north of the south lot line of Harrison Street. At its connection with the aforesaid sewer, the elevation of the inside bottom of this sewer shall be twenty-one and seventy hundredths (21.70) feet above said datum and the grade thereof shall rise thence at a uniform rate to an elevation of twenty-four and thirty-three hundredths (24.33) feet hbove said datum at its terminus. DATUM PLANE The datum plane hereinbefore mentioned is the plane of low watermark of Lake Michigan in the year, A. D. 1847 as established by the Trustees of Illinois and Michigan Canal, and is twenty-two and forty-one hundredths (22.41) feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to building known as City Hall, located at the northwest corner of Davis Street and Sherman Avenue in said City of Evanston. EXCAVATION AND BACK FILLING The ground shall be excavated in open trenches. The trenches shall be at least twelve inches wider than the exterior diameter of the pipes so as to give at least six inches clearance on both sides of the pipes for sealing the joints and setting and closing Y-branches. The materials excavated shall be kept compact and shall be back - filled as soon as practicable, in order to occasion the least possibke inconvenience to the public in use of the street. The trenches shall be promptly back -filled to a depth of twelve (12) inches above the top of the pipes. The soil shall be carefully packed under and around the pipes. In no case from the commencement to the termina- tion of the work shall more than five hundred feet of trench be opened in advance of the completed back -filling. Any and all pave- ments or crosswalks disturbed in the performance of the work shall be restored to a condition as safe and serviceable as before being disturbed. Free access shall be left to all fire hydrants and water gates. Provision shall be made for the -flow of sewers, drains or water courses disturbed during the progress of the work. All brick used in the improvement herein provided to be made shall be hard burned sewer brick of the best quality. The brick shall be moistened shortly before being laid in the work. CEWNT All cement used in the improvement herein provided to be made shall be Portland cement of the best quality. The cement shall be carefully protected from moisture, freshly mixed for the work in hand, and shall be used before initial setting has occurred. SAND All sand used for mortar in the improvement herein provided to be made shall be clean, coarse and sharp grained; containing no particles larger -than would pass through a sieve of one -eighth inch mesh. PIPES Socket pipes, cylindrical, smooth, straight, thoroughly vitri- fied, well glazed, sound, and in all respects of the best quality and workmanship for the purpose, shall be used in building the sewer herein provided fo be constructed. The pipes shall give a clear sharp ring when struck with a mason's hammer. The pipes shall be not less than two feet in length. The joint-0--between the pipes shall be securely sealed with the same quality of mortar herein specified for manholes and catch basins. The joints shall be wiped and pointed in'sid,e the pipes. The interior of the pipes shall be kept free from dirt or refuse of every description as the work progresses, and shall be left. clean at the complete cn�;o t•be._Xgrk�A -- 4-24 One six-inch Y-branch, or house connection slant, shall be placed in the sewer, herein provided to be constructed, in front of and for the use of, each and every lot of subdivided land having a direct frontage of thirty feet or less on the line of said improve- ment; and in addition thereto one such Y-branch shall be placed in said sewer in front of and for the use of each and every thirty feet frontage of each and every lot of -subdivided land having a greater direct frontage than thirty feet on the line of said improvement. Any and all property subdivided into lots in such manner as to side on the line of said improvement shall have one such Y-branch placed in said sewer opposite and for the use of each and every thirty feet of such siding, except the front seventy-five feet thereof. Unsubdivided tracts abutting on the line of said improvement shall have one such Y-branch placed in said sewer opposite and for the use of each and every thirty feet of such tract so abutting. The openings in Y-branches shall be closed with standard vitrified, tile discs, sealed with cement mortar as specified for its botween pipes. MANHOLES -Zen, brick manholes shall be built of hard burned sewer brick, upon the sewer or sewers, as the case may be, hereinbefore provided to be constructed and shall be located at the points hereinafter specified. Said manholes shall be placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbefore specified in such manner as to bring the tops of the iron covers herein required for said manholes when in place to the upper surface of the proposed pavement. Said manholes shall be cylindrical in shape having an internal diameter of thirty- six (36) inches at the upper surface of the base and upward to the lowest header course being uniformly ,drawn in to twenty-four (24)'inches in diameter at the top of the masonry by means of six (6) header courses of brick laid end- wise and horizontally, the diameter being decreased uniformly by each course to fit the iron covers hereinafter specified to be furnished and set on the walls of said manholes. The walls of said manholes shall rest upon the ' base thereof without offsetting and shall be eight (8) inches thick,'built (except as above specified for header courses) of alter- nate vertical and horizontal courses of brick. The brick used in the construction of said manholes shall be thoroughly wetted with water before being placed and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1;/,) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manholes shall begin at a point five (5)'inches below the outside bottom of the sewer hereinbefore specified and shall extend 'upward to said outside bottom and along the sides of said sewer to a point midway between the top and bottom of said sewer, said base to be circular in form, the diameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manholes shall be neatly removed leaving the lower half thereof to form the invert of the manhole. Said manholes shall each be equipped with a circular castiron cover having a tight lid, weighing not less than five t�hundred and forty (540) pounds, of the type known as "Chicago City Standard Heavy" having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two (22) and three- 1' : fourths (Y4) inches at the top thereof. Said manhole covers herein specified to be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the tops of the walls of said manholes, which walls shall be built to such height as will bring the tops of the covers when set in place, to the surface of the pavement hereinbefore specified. Said manholes herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: 2n Grant Street: One at the center line of Hastings Avenue. One at the center line of Cowper Avenue. On the center line of Hastings Avenue: One at a point two hundred fifty-seven (257) feet south of t'he south line of Colfax Street. one at the center line of Colfax Street. One at a point three hundred thirty-nine (339) feet north �of the north line of Colfax Street. One at a point thirty-three (33) feet north of the south line of Harrison Street. IZ0198 On the center line of Cowper Avenue: 425 One at a point two hundred fifty-seven (257) feet the south line of Colfax Street. one at a the center line of Colfax Street* one at a point three hundred thirty-nine (339) of the north line of Colfax Street.. One at a point thirty-three (33) feet north of line of Harrison Street. CATCH BASINS south of feet north the Routh Twenty-four (24) brick catch basins shall be built and connected with the sewers herein provided to be constructed. Said catch basins shall be constructed in the manner below specified. Said catch basinst, shall be cylindrical in shape, having an internal diameter'of forty-two inches at the bottom and upward to the lowest header course, being. drawn in 9tt the top of the masonry by means of twelve header courses laid endwise and horizontally. The diameter shall be decreased uniform- ly by each header course to fit the iron covers hereinafter specified to be placed on said catch basins. Said catch basins shall have walls eight inches thick, built, .excelit as above specified, of two courses of brick placed edgewise in perpendicular courses. The brick used in the construction of said catch basins shall be laid in mortar composed by volume of one part of Portland cement and one and one-half parts of sand. Said catch basins shall rest on a solid bottom of two-inch pine planks="id'closely in single thickness and securely spiked to pine stringers, or cross planks, two inches thick by six inches wide. The bottom shall be made circular in form, and shall measure sixty inches in diameter. Said catch basins shall be six and one-half feet deep measured from the top of the plank bottom aforesaid to the top of the iron covers hereinafter specified to be furnished and set. The upper surface of which covers shall be placed at the Elevation of the adjacent ground. Said catch basins shall be connected with the sewer aforesaid by'mea ns of vitrified, salt glazed, tile pipes having an internal diameter of nine inches, (the metal of which pipes shall have a thickness of thir- teen -sixteenths (13/16) of an inch). The pipes shall be of the type anP4uality, and the joints shall be sealed in the manner hereinbefore specified for the pipe sewers. Each catch basin connection shall start in a nine inch Y-branch, which shall be set in the aforesaid sewer at a point not less than six feet in advance of the catch basin, measured along and in the down -stream direction of the sewer from a point on said sewer directly opposite the catch basin. The pipes shall be laid true to line and grade, and the connection shall enter the catch basin at a point two and one-half feet above its bottom. The pipe entering the catch basin through the brick walls thereof shall be an elbow with the socket end turned downward inside of the catch basin to form a trap. Said catch basins shall each be equipped with a cast iron cover weighing not less than one hundred eighty pounds, which cover shall be of the same size and pattern or equal in size, quality and workmanship to the cast iron covers now in use on existing catch basins in Hinman Avenue between University Place and Lee Street in said City of Evanston. Said catch basin covers herein provided to be furnished and set shall rest on the walls of said catch basins herein specified to be construct- ed, which walls shall be built to such height as will bring the top of the covers, when set in place, to the elevations herein specified therefor. Said catch basins shall be located at necessary points along said sewers along the gutter lines of the roadway thereof. An inlet nine (9) inches in diameter shall be made in the side of each catch basin in such manner as to receive the water from the ditches. Said inlet shall be provided with a suitable iron grating placed in such a manner as to prevent miscellaneous rubbish from entering the catch basin through said inlet. Said grating to consist of two (2) one-half (f) inch round iron bars placed vertically, the dnds of which bars shall be firmly embedded in the walls of said catch basin in such manner as to divide said inlet into three (3) equal parts. rA M_ DRAINAGE DISTRICT That for the purpose of making the improvement aforesaid the following described property within the said City of Evanston is hereby created into and declared to be a drainage district, to -wit: Lots one (1) to forty-eight (48) (both inclusive) in Hastings Subdivision, also Lots one (1) to one hundred forty-four (144) (both inclusive) in Hastings Addition to Evanston, all in the East one-half (*) of the Northwest one -quarter (4) of the Southwest one -quarter () of Fractional Section eleven (11), Townshi forty-one (41) North, Range thirteen (13) East of the Third (3rd� Principal Meridians The owners and occupants of lots, pieces and parcels of lands lying within said district hereinbefore described, shall at all times hereafter be entitled to the use and benefit of the sewers hereinbefore specified. Right, permission, privilege and authority are hereby given and granted to the present and future owners and occupants of lands lying within said above drainage limits Ito bpan and connect all ditches, drains and severs which now exist and may be hereafter constructed within said district into and 'with the said sewers here- inbefore specified. All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of eight hundred four and seven hundredths dollars ($ 804.07 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of - eight hundred four and seven hundredths dollars ($ 804.07 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into five installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section S. And for the purpose of anticipating the collection of the second and subsequent 'installments of said assessment for said improvement, bonds shall be issued payable out of said installments hearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. A+it),rtrd by Ole City Cotmeil of the City of Evanston ou f)e SUcfay of--- ------------ A. P.. 19 - --?--3: A.•)= roved ------- --19 z3 - - - -� �� �p jV ( City Clerk ----------- Mayor. 1zi919$ 421 Recommendation, Estimate and Ordinance. RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled We herewith submit an ordinance providing that the Public Alley extending from the west lot line of WALi'M AYSJU to the east lot line of MODANUL A MM a is Block two (S) . John OdIverls Addition to North 3vanston, In the City of Bvanston, County of Cook, State of Illinoiso be improved by grading, paving to a width of nineteen (19) feet with a Portland cement concrete pavemnt six (6) inches in thickness, oomposed of Portland cement* sand and gravel, mixed by volumrs in ratios of 1:8:3 respeetive],yo with sufficient clean water to give proper plasticity, using a bituminous filler strip for expansion joints in pavement, oonstruot4 Lag necessary surface drainage sewer of vitrified. salt glazed. tile pipe having an internal diamster of nine (s inches, (' Ise metal : of which Ripe shall be thirteen -sixteenths 113/16) of an inch In thickness), brick catch basins, six-inch internal diameter, ♦itri- fled, salt glazede the pipe catch basin connections to surface drainage sewer and brick manholess adjusting present maoadam parting adjoining and connecting with the proposed improvement; together with an estimate of the cost of said Improvement and recommend the passage of said ordinance and the making of the improvement can. templated therein. Respectfully submitted, JON/* (2 4 *(�* Board of Local Improvements of the City of Evanston. Illinois. Dated. lhranston. Illinois, .sue, I9 z �. ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the Citv of Evanston in the City Council Assembled The Board of Local Improvements of the City of Evanston having adopted a resolution that the public Alloy extending from the west lot line Of IIALNM AVRM to the east lot line of moDAML AVBNM o in Block two (2 ): John oulverms Addition to forth NvanetOn# in the City of Evanston, County of Cook, State of Illinoiss be improved by grading, paving to a 'width of nineteen (19) feet with a Portland cement concrete Pavement six (6) inches in thickness, composed of Portland OW"At e sand cad grravel+ mixed by volume in ratios of 1;2:3 respectivelye with sufficient clean water to give proper plasticity, using a bituminous filler strip for expansion joints in pavements construct- ing necessary surface drainage surer of vitrified* salt glasede tale pipe }wing an internal diameter of nine (9) inches, (the metal of which pie shall be thirteen -sixteenths (13/16) of aA inch in thioknesel, brick catch basins@ six«inch internal diawster vitrified, salt glazed, tile pipe catch basin oonnectlons to sus - face drainage sewer and brink mmiholes, adjusting present maesdama paving adjoining and connecting with the proposed improveaent; and presented to the City Council of the City of Rvanston a resew^sn elation that such improvement be made, I herewith submit an estimate of the cost of said improvement as described in said mrwsolutio9ls including labor# material and lawful expenses attending the pro. osedings for menacing said improveaent and the cost of making and colieoting the assessments as provided by taw, vis: • MIYA= OF COST 800 cue yds. of grading E $1.65 per cue yd.........,... $ 19320.00 1700 sq. yds. of Portland cement concrete paving com- plete in place E1. $2,85 per sq. yd.................. 4►845.00 450 line ft, of bituminous filler strip for expansion joints in paving laid complete in place C, 15,e per tin. ft...................<........................ 67.50 650 line ft* of nine -inch internal dia-meters vitrified, silt glazed► the pipe surface drainage sewer (average depth of cut five and one-half (5*) feet) laid complete in place including trenching► back - filling and removal, of surplus excavation Gy � 2.50 per tin. ft....»................................... 10625.00 2 brick catch basins* including cast iron covem plank bottoms, excavation# backfil.li,ng and removal of surplus excavation complete in place 0 ;`85.00 each 170e00 20 line ft. of six-inch internal diameter, vitrified# salt glazed* the pipe catch basin connections to surface drainage sewer (average depth of out five (5) feet) including trenching► backfilli.ng and re- moval, of surplus excavation, laid complete in place u t1.25 per line ft...,..........»......... 25.00 3 brick manholes, including cast iron covers, exca- •nation, backfilling and removal of surplus excava- tion, complete in place C3 $85.00 each,........... 255e00 100 sq. yds. of macadam paving adjusted (,' (11.30 per sgY.yd. 130.00 For lawful expenses attending t)2e proceedings for making said improvement and the cost of making and collecting the assessment therefor, not to exceed six (6) per centum of the above, to-wit:$89437.50....•••.•••...•..•.••••.. 506.25 Total**,*.....* $80943.75 And I hereby certify that in my opinion the above eati- mate does not exceed the probable cost of the above proposed improve- ment and the lawful expenses attending the same. m .................................. Engineer of the Board of Local Im- provements of the City of Evanston. Dated, Evanston# llinois, X911_1� An Ordinance. Providing that the Public Alley extending from the west lot line of 'J'ALNUT AM,= to the east lot i,ne of McDllNlaIL AT. I:;, in'Block two (2), -'ohn Culver+s Addition t�",*r2Vanston# in the City of :&vans - ton# County of Cook# State of Illinois, be improved by grading, paving to a width of nineteen (19) feet with a Portland cement concrete pavement six (6) inches in thickness, composed of Port- land cement# eand and gravel, mixed by volume in ratios of 1:2:3 respectively# with sufficient clean ti-t er to give proper plasti- city► using; a bituminous filler strip for expansion joints in pave- maent, constructing necessary surface drainage sewer of vitrified, salt glazed* the pipe having an internal diameter of nine (9) inches, (the metal of which pipe shall be thirteen -sixteenths (13/16) of an inch in thickness) , brick catch basins► six -.inch internal diameter, vitrified# salt glazed, tile pipe catch basin connections to surface drainage sewer and brick manholes, ad- justing present macadam paving adjoining and connecting with the proposed improvement. BE IT ORDA X=, BY TBE CITY COUNCIL OF M. CITY OF �VI��fSTO�t SECTION 1. That a local improvement shall ba made within the City of Evanston. County of Cook, State of Illinois► the natures character► locality and description of which local improve- ment is as follows, to -wit: 1Z.19i98 - - - - 429 Tbat the Publie .Alloy vxts�ading from the west lot line of WALNUT ANZNU to the +mot l�'t line of WDANINZ, AV`�, n ;Block two (2)., John Culverts Addition to Forth Nv&nston, 'in a the City of Evanston„ Qaunty of Cook, State of Illinois, be and the some is .hereby ortored inpreTod as follows: Location of Pavement The center line of the pavement herein provided to be con- structed shall coincide with the center line of the alley within which said pavement is included. Width of Pavement The width of the pavement herein provided to be constructed shall be nineteen (19) feet. Grade of Pavement The grade of the upper surface of the finished pavement herein provided to be constructed is hereby established as follows, measured in feet and decimal parts of a foot above the datum plane of the City of Evanston, to -wit: Transverse Section of Alley At the west lot line of Walnut Ave. At a point one hundred (100) feet west of the west lot line of Walnut Avenue. At a point two hundred fifty (250) feet west of the west lot line of Walnut Avenue. At a point four hundred (400) feet west of the west lot line of Walnut Avenue. Outer Edge of Pavement 27.65 28.13 27.38 28.13 At a point one hundred seventy-five (175) feet east of the east lot line of McDaniel Avenue. 27.125 At the east lot line of McDaniel Avenue. 28.00 ALLEY PAVING Center line of Pavement. 27.40 27.88 27.12 27.88 26.875 27.75 The grade of the center line and outer edges of the pavement at intermediate points shall be respec- tively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane of the low water mark of Lake Michigan in the year A. D. 1847, as established by the Trustees of Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the northwest corner of Davis street and Sherman Avenue, in said City of Evanston. The upper surface of the pavement herein provided to be constructed, when completed, shall conform to the arc of a circle passing through the respective grade points in the center line and at the outer edges of the pavement, and shall be true and symmetrical. GRADING The alley herein provided to be improved shall be cleaned prior to the paving thereof, in a thorough - manner of all deteriorated planking, blockinR'S? o Y�erP&6ris. The soil of the roadway shall then be ex- cavated or filled upon with other suitable soil, as the case may be, to such depth and shape as will bring the upper surface of the finished pavement, when constructed as hereinafter specified, to the elevations and grades hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable self- propelling roller or flooding with water as the case may require. Depressions or holes appearing as the pre= paration of the sub -grade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left in the sub -grade, shall be removed by the contractor without extra charge. CONCRETE .PAV-Ei\fENT—ALLEY n h ubngrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement, c - �in o e elf Eland cement, sand and gravel mixe d b}, volume in ratios of one part of cement, two parts { ' a'n'il; ffiiee• parts of gravel with sufficient clean water to give proper plasticity and in the manner here- ,inater se forth. The concrete shall be spread on th e sub -grade in such quantity and to such form that af- �ter being compacted in place it shall have a uniform thickness of six inches. 1 The Portland cement to be used in making this concrete pavement shall be of such quality that repre-sentative samples collected from shipments made for the job shall be capable of passing the following tests for fineness, soundness, initial setting, and tensile strength, to -wit: Fineness. The cement shall be ground so that 927o will pass through a standard sieve, having 10,000 meshes and 757o' will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at y the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no check- ing, warping or swelling. Broken briquette of the neat cement which have remained in air one day and in -water six days shall likewise withstand the steaming and boiling specified for the neat pat. Setting. The cement when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ...................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) .................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days '(1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. The sand to be used for making the concrete shall be free from dust, clay, loam, vegetable or other deleterious matter. The grains of sand shall be angular and shall range in size from one -quarter inch down to the finest; but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind - drifted sand shall not be used. The sand shall be of such quality that the mortar composed of one part of the cement hereinbefore specified and three parts of sand, by weight, when made into briquettes, will de- velop a tensile strength at least equal to the strength of a mortar of the same consistency and proportion made with the same cement and Standard Ottawa sand. In no case shall the sand, when used for this concrete, contain frost or lumps of frozen matter. The gravel to be used in making this concrete shall be clean, hard, free from dust, loam, vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable li sizes grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (1.4) inch. In no case shall the gravel when used for this concrete contain frost or lumps of frozen•matter. The sand and gravel shall be clean when delivered on the job,,and shall be kept clean until used. The method used for measuring the ingredients in the concrete shall be one that will insure a uniform proportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be considered one cubic foot. f The concrete shall be mixed in a batch machine mixer of a type that will insure a uniform distribution F of the ingredients throughout the mass. Ingredients of the concrete or mortar shall be mixed to the de- sired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in color, and homogeneous. Clean water, free from oil, acid, alkali or vegetable matter shall be ad- mitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tampink, but which can be handled without causing a separation of the gravel from the mortar. The concrete shall be handled rapidly from the mixer to its place in the pavement. Successi-, batches shall be deposited in place on the sub -grade in a continuous operation so that sections of the pavement be- t*%veen expansion joints, hereinafter specified, shall be entirely completed and without the use of inter- mediate cross forms or bulk -heads. Concrete shall not be retempered or used that has partially hardened. The concrete shall be compacted and brought to the established grade and shaped with a template or straight. edge, and shall be brought to a comparatively even surface. After the concrete has been so brought to grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even sur- face. Said roller shall not be less than five feet in length, and not less than eight (8) inches not more than twelve (12) inches in diameter and weighing not less than one hundred pounds (100 lbs.). The roller shall be operated across the pavement from side to side of same, by means of ropes attached to each side of the roller, at such angle with the center line of the pavement as to permit the roller to advance along the pavement two feet for each time across. After the roller has covered a given area in the manner de- scribed, the same area shall be similarly rolled by the roller for not less than three (3) times at intervals of E -fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may be "ilece ary.to remo� - �+ Its x_d ex .e 5..,,,_. pr- - - iz19198 t fter the rolling has been completed. the pavement shall be finished by two (2) apl511'ca"5 made -of canvas, not less than six (G) inches wide and not less than two (2) feet longer than the avid the pavement. For the first application, vigorous strokes at least twelve (12) inches long shall be used. The lorigi. tudinal movement of the belt along the pavement shall be very slight. The second application of the belt shall be immediately after the water glaze or sheen disappears, and the stroke of the belt shall be not more than four (4) inches, and the longitudinal movement shall be a continuous forward movement. A suitable bridge to span the width of the pavement shall be used to finish the joints, no part of which shall be in contact with the finished work. A notched straight edge ten (10) feet in length shall be used for testing each transverse joint, prior to and subsequent to final finishing. The straight edge shall be placed over the joint, -parallel to the center line of the pavement and moved across from curb to curb. When the surface of the concrete upon testing shows to be high or low, concrete will be added or removed to bring the surface its true shape. The concrete adjoining transverse joints shall be dense in character and after rolling shall be finished with a wood float, which is divided through the center and which will permit finishing on both sides of the filler at the same time. The finished surface of the concrete shall not vary more than one -eighth (1-8) of an inch from a two foot straight edge placed upon the concrete in any position. Workmen shall not walk on the freshly laid concrete; and no one shall be allowed on the concrete after it has been worked into form and position with a template or straight edge, until it has thoroughly hardened. EXPANSION JOINTS Transverse expansion joints not less than three -eighths (318) inch or more than one-half (112) inch in width shall be placed across the pavement at right angle to the center line of the roadway; spaced so as _ not to exceed thirty-three and one-third (33 113) feet apart. All expansion joints shall extend through the' entire thickness of the pavement. In these expansion joints there shall be placed a prepared strip of bi- tuminous filler of the thickness hereinbefore specified for expansion joints and extending from the bottom of the pavement herein specified to the upper surface of the finished pavement. The upper edges of all joints and the upper outer edges of the pavement shall be neatly troweled to a radius of one -quarter (/ ) inch. All metal, manholes, catch basin ,covers, and other fixed objects shall be separated from the concrete pavement by a joint filler of the same character as hereinbefore specified for expansion joints; which joint filler shall extend through the entire thickness of the pavement. t PROTECTION r=� As soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be spray- ed with water; and it shall be kept thoroughly wet for at least ten days. As soon as it can be done without damage to the concrete, the surface thereof, during hot and dry weather and if unshaded shall be covered with not less than one inch of earth, sawdust, straw or other suitable and available material, which cover- ing shall be kept vet for at least four days after being placed. In dry and hot weather freshly laid con- crete shall be protected by a canvas covering until it can be sprinkled or covered, as specified. The water and concrete aggregates shall be heated if at any time during the progress of the work the temperature is, or from weather reports will likely during the next twenty-four hours drop to (35) thirty- five degrees Fahrenheit. The concrete shall be protected against freezing for at least ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established line, and their upper edges shall conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms. shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have previously been used. The pavement shall be thoroughly cleaned and open to the public as soon as the cement has set suffici- ently to receive the traffic without injury to the surf ace or body of the concrete. SURFACE DRAINAGE SEWER For the purpose of carrying off storm waters from the surface of the pavement herein provided to be con- structed„ a surface drainage sewer of vitrified, salt glazed, tile pipe shall be laid as hereinafter specified. in the ground in such manner as to conform to the elevations, lines Said sewer shall be laid in open trenches and, grades hereinafter specified. er shall be of the type known as "Bel and Spigot" having an in - The pipe used in the construction of said sewWhich pipe shall have a thickness of thirteen -sixteenths (13116) ternal diameter of nine (9) inches, the metal of w of an inch and shall be not less than two (2) feet in length, Cylindrical, straight, smooth, thoroughly vitrified, salt ween glazed, free from cracks or blisters and of the best quality and workmanship. tthe be tequality and pipes shall be securely sealed with a mortar composed by volume of one (1) part of Portland cement of one and, one-half (1/) parts of clean, sharp sand mixed w ith sufficient clean water to give proper plasticity. The joints between said pipes shall be wiped and pointed dl clean p inside e ipes the completion interior or of the the wo pes shall be kept free from dirt or refuse of every description and shall t e 432 The open trenches excavated to receive said sewer, shall be made at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least (6) inches clearance on both sides of the pipes for sealing joints. The materials excavated shall be kept compactly along the sides of the trench and shall be backfilled as soon as practicable in order to occasion the least possible inconvenience to the public in use of the street or alley 4s the case may be. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed. under and around the pipes. The open and unconnected ends of said sewer shall each be securely closed with a salt glazed, vitrified tile disc, and sealed in the manner above specified for joints between pipes. Said sewer or sewers as the case may be shall be lai d as follows, to -wit: In and along the center line of the alley hereinbefore provided to be paved, from and connecting with the sewer now in place in and along the center line of Walnut Avenue, crest a distance of six hundred fifty (650) feet. The internal diameter of this cewer shall be nine (9) inches. At Its connection with the aforesaid sewer in Walnut Avenue, the elevation of the inside bottom of this newer shall be twenty-one and seven hun- dredths (21.07) feet above the datum plane hereinbefore defined and the grade thereof shall rise thence at a uniform rate to an elevation of twenty-two and eighty-seven hundredths (22.87) feet above said datum at its tern4nus. CATCH BASINS For the purpose of receiving storm waters from the surface of the pavement herein provided to be con- structed two (2) catch basins shall be constructed at the necessary points along the center line of said pavement. Said Catch basins sholl be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catch basins, when in place, to the upper surface of the proposed pavement. Said catch basins shall be cylindrical in shape having an internal diameter of thirty-six (36) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by means of three (3) header courses of brick, laid endwise and horizontally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catch basins. Said catch -basins shall have walls eight (8) inches thick built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch - basins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 112) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch -basins shall each rest on a solid' bottom of two (2) inch pine planks, laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide: The said bottom shall be made circular in form, and shall measure,fifty-four (54) inches in diameter, and shall have its upper side placed four(4) feet below the upper surface of the brick wall for said catch -basin., Said catch -basins shall be connected with the sewer, or sewers as the case may be, now existing, or. herein provided to be constructed, as the case may be, in and along the center line of the said' pavement, along which center line and over said sewer or sewers, the respective catch -basins are to be constructed. Said catch -basins shall be connected with the sewer or sewers aforesaid by means of vitrified; salt glazed 'tile pipe having an internal diameter of six (6) inches and of the type known as "Bell and Spigot," the metal of which pipes shall be three -fourths (314) of an inch in thickness and shall be not less than two (2) feet in length. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipe shall be se- curely sealed with a mortar of the quality herein required for brick walls in catch -basins. ! Each catch -basin connection shall start in a six-inch "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the said sewer at a point not less than eight (8) feet in advance of the center of the catch -basin measured along and in the down stream direction of the sewer. The pipe shall be laid true to line and grade and the connection shall enter the catch -basin through the brick wall thereof at a point two,and one-half (2 112) feet above the top of the plank bottom of said catch -basin. The pipe entering the catch -basin through the brick wall thereof, shall be an elbow with the bell end turned downward inside the catch -basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be back -filled as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the alley. The trenches shall be promptly back -filled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. 10 1Z0i98 433 Said catch -basins shall each be equipped and fitted with a circular cast iron grate cover weighing not less than three hundred and sixty (360) pounds. Said grate to be so constructed as to freely admit water from the surface of the pavement to the catch -basin) and having a vertical height of nine (9) inches, the opening in said cover shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) 'inches at the top thereof. The diameter of the lid or grate for said covers shall be 22 314 inches. Said catch -basin covers herein provided to be furnished and set shall rest on the walls of the catch -basins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catch -basins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the upper surface of the pavement at points where said catch -basins are located. Said catch -basins herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: One at a point two hundred fifty (250) feet West of the west lot line of Walnut Avenue. One at a point ono hundred aovontyfive (175) feet east of the east lot line of :IcDaniol Avanuo. MANHOLES - Three brick manholes shall be built of hard burned sewer brick, upon the sewer or sewers, as the case may be, hereinbefore provided to be constructed and shall be located at the points hereinafter specified. Said manholes shall be placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbefore specified in such manner as to bring the tops of the iron covers herein required for said manholes when in place to the upper surface of the proposed pavement. Said manholes shall be cylindrical in shape having an internal diameter of thirty- six (36) inches at the tipper surface of the base and upward to the lowest header course being uniformly drawn in to twenty-four (24) inches in diameter at the top of the masonry by means of six (6) header courses of brick laid end- wise and horizontally, the diameter being decreased uniformly by each course to fit the iron covers hereinafter specified to be furnished and set on the walls of said manholes. The walls of said manholes shall rest upon the base thereof without offsetting and shall be eight (8) inches thick, built (except as above specified for header courses) of alter- nate vertical and horizontal courses of brick. The brick used in the construction of said manholes shall be thoroughly wetted with water before being placed and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1;/2) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manholes shall begin at a point five (5) inches below the outside bottom of the sewer hereinbefore specified and shall extend upward to said outside bottom and along the sides of said sewer to a point midway between the top and bottom of said sewer, said base to be circular in form, the diameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manholes shall be neatly removed leaving the lower half thereof to form the invert of the manhole. Said manholes shall each be equipped with a circular castiron cover having a tight lid, weighing not less than five hundred and forty (540) pounds, of the type known as "Chicago City Standard Heavy" having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two (22) and three - fourths (Y4) inches at the top thereof. Said manhole covers herein specified to be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the tops of the walls of said manholes, which walls shall be built to such height as will bring the tops of the covers when set in place, to the surface of the pavement hereinbefore specified. Said manholes herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows; One at the center line of Jlnut Avenue, one at a point one hundred eighty (180) feet West of the west lot line of Walnut Avenue. One at a point three hundred eighty (380) feet west of the west lot line of Walnut Avenue, ADJUSTMENT OF PRESENT :11ACADA'.�I PAVI\G The present macadam paving where the same adjoins the proposed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and quality composing said macadam paving; and having been thoroughly compacted it shall form a base or founda- tion for a bituminous macadam pavement to be placed thereon. The upper surface of said base or foundation %-,,hen completed shall be two (2) inches below the finished grade of the proposed improvement where same adjoins said macadam paving. Upon the base or foundation, prepared as lereinbefore specified, there shall be spread, a layer of clean, hard broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of two (2) inches thereof being spread. on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. 434 As soon as the initial rolling of the limestone is finished, and the slaver thereof is dry, there shall be applied to the limestone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic ce- ment in such quantities as to insure not less than one(1) gallon thereof being evenly spread on and used; in each and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. Immediatelv after, and progressing with, the application of asphaltic cement hereinbefore required, the sur- face to which the same shall have been applied shall be uniformly covered with dry and hard limestone screen- ings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size ranging from ` the largest particle that would, pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diameter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screenings the paving so covered, shall be given a thorough rolling with a roller of the weight and type hereinbefore named. This roll- ing shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the paving shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be applied to the surface a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be' sufficient in quantity and so applied and spread, as to insure not less than three-quarters (Y4) gallon thereof ng evenly spread and used on each and every square yard of paving. Immediately after the second appli- ?�cation of asphaltic cement is made and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three - fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard, thereof being evenly spread and used on each and every square yard of paving. A final rolling of the paving shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the pavement is thoroughly compacted, and brought to a surface, free from depressions and -, true to form and grade. #' 4 Any and all depressions developing during progress of the rolling, required in process of constructing the pavement shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following require- ments and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural asphalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and Fso prepared for use as to best adapt it to the climatic and traffic conditions of the roadway on which it is be used. (2). Its specific gravity shall be greater than 980 at 77 de!�rees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams ,, for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 rams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar r any of its products, or other injurious matters, and the various hydrocarbons composing it shall be present 'n homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent 'n weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at east 95%. (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98/77q shall e soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in petroleum naptha, at the air temperature to the ex - I lent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per '.cent,yof fixed carbon or residue coke. MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick Shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall ! not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. aid sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five ,5) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five C) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand Mall be of such quality that mortar composed of one part of the cement herein specified and three parts sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile rength of a mortar of the same consistency and proportion, made with the same cement and standard ta'ttawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT ---� The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit: Fineness. The cement shall be so ground that 92 7o will pass through a standard sieve, having 10,000 meshes and 75% will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The tile pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said pipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of . five hundred six and twenty-five hundredths dollars ($ 506.25 ) being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying anci collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General' Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of five. hundred six and twenty-five hundredths dollars ($ 506.25 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into ten installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per ce'ntum per annum according to law until paid. 436 Section i. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the :Mayor, and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro -visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 1.1th, A. D: 1897, afid the amendments thereto. Section F. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinoig, in the name of the City of Evanston, praying that steps may be taken .to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre -- .scribed by law. Section 7. That all ordinances or parts of ordinances conflicting tvith'this ordinance be and the same are hereby repealed: Section 8. 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' R.i+i # r Y •f:tj'S x{y s A t i.x r s •<1 i.r -� `a i = C C '; s r *,a 4 Y'. ; , -R R /•'IF . 1t1 l G�: t. t • is r f -y, } •..i: + 4.•0 � i 1� 6i• t '. L f i. 2+1.. f-.J ,r r • •�Y }e• O • .l - ei,o 1 : lR�k! .�♦ R A t WS f • fit ' T, r Y �:in'• i ,.' M.,tr ?1't''t S', J• .i Oay T a a xH i• G ci tt° „ • •;i i•! •li�s : fi { v, 1 t-xt;i 3 ► w•i.y r. / - IM.� i rt :. Yj►• •M�� Y•tt i►' t f f.ri 1 t X e • t 3 .t { d'ir• v�ft4 i R JA ! t+ f f •i 9r. r ,o-4 F #-0 f, t+ • 1. Yx*=,f !.♦ "a 9t + i. = a iHl,e Cd.fi._o .,'.� 4 • f. tY�"sY�. 'F k •.A,IlY1.+l t•4. 7 i-f%L • i C •t t „4 U�r •..y < Y taY.tt 1 i to : l b ' ('/ 1..: ,feY, tYCM Y'a YwL.. . 5 .� i fi► Lk ,?'•'• ,3 C<5.y Y. +"34'f-� • f .t cf- r tr F16i:si :. Itt t•;1 ; i-.tot t..+. .4 IF .s r a < I,f 73 ax;•` Yuw •z t f.. (JV s *jkfLao.R' l!'W'47jj !. AN, c.li 1 •. a r Iiz :. sew 11 e V i•r•r#�'•�risrrr•:r*r• r r eerf�eeA♦ t►t►rrre•erre•aee�ererea•reerrlte� A. errere+aetie••efl• rrrr.•rreerrr+►e Beam, or ZIOMI ivft C" or" IZ19198 ESTIMATE OF ENGINEER OF BOARD OF LOCAL IIO?ROVMUOTS. 437 To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that the roadway of FLORENCE AVENUE from the south lot line of DEMPSTER STREET to the north lot line of MAIN STREET also the roadways of intersecting streets and alleys lying within said portion of said FLORENCE AVENUE and not included in the roadway thereof, in the City of Evanston, County of Cook, State of Illinois, be improved by grading, curbing, with a Portland cement concrete curb, having an average horizontal width of seven (7) inches and a vertical height of twent -f our(24) inches, paving with a bituminous macadam pavement three (3) inches in thickness laid on a Portland cement concrete base or foundation five (5) inches in thickness, constructing necessary catch basins, cylindrical in shape, having an internal diameter of forty-two(42) inches, of hard burned sewer brick, the walls of which catch basins shall be eight (8 ) inches in thickness and have a 'vertical height of five and one-half (5*) feet. Said catch basins to beprovided with a cast iron cover weighing not less than three hundred thirty (330) pounds and a circular plank obttom two (2) inches in thick- ness and to be connected with the surface drainage sewer by means of vitrified, salt gal zed, tile pipe having an internal diameter of nine (9) inches (the wall of which pipe shall have a thickness of thirteen -sixteenths (13/16) of an inch) adjusting catch basins, manholes, valve chambers and present macadam pavement adjoining and connecting with the proposed improvement; and presented to the City Council of the City of Evanston a recommendation that such improvement be made, I herewith submit an estimate of the cost of said improvement as described in said resolution, inclu- ding labor, material and lawful expenses attending the proceedings, for making said improvement and the cost of making and collecting the assessment, as provided by law, viz: 340 590 8250 23 4 8 5 50 For ESTIMATE OF COST 0 0 Cu. yds. of grading ® $1.70 per cu. yd. . . . Lin. Ft. of Portland cement concrete curb laid complete in place ® $1.25 per lin. ft. . . . Sq* yds. of bituminous macadam pavement three(3 ) inches in thickness, laid on a Portland cement concrete base or foundation five (5) inches in 'thickness, complete in place ® 03.55 per sq. yd. Brick catch basins, including cast iron covers plank bottoms, nine -inch internal diameter, vitrified, salt glazed, tile pipe catch basins connections to surface drainage sewer, excavation, backfilling, and removal of surplus excavation, complete in place ® Fp85.00 each . . catch basins adjusted to grade ® 415.00 each Manholes adjusted to grade ® f15.00 each . . . Valve chambers adjusted to grade ® 615.00 each Sq. yds. of macadam pavement adjusted ® 01.70 per sq. yd. . . . 5,780.00 70375.00 29,287.50 1,955.00 60.00 120.00 75.00 85.00 lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment therefor, not to exceed six (6) per centum of the above, to -wit: *44,737.50 .--. 2,684.25 Total . . . V 47,421.75 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improvement and the lawful expenses attending the same. Wm. Blanchard, Engineer of the Board of Local Im- provemenis of the City of Evanston Dated, Evanston, Illinois. July loth, 1923. • An Ordinance. cT C== coy` camn co == �,V�,= ,`^= C= to co 0 C pq-=, MC3 ova ono'..• C? Vin cno C:�zo �� 16 irk t� CwC�== Cam'", C=R0 a ' ant 0 t= "z m o C�o Wv Ga G:no M,�C�7 sap,=00 Co Mt=0 co um =7c'—to C--' cap, ? c; nn wall U`'•,w' �.:.,."` 1v=:...7� '.,.` Mom.. '�i�....w.f"'"ti..Y Rf ';, ."`o.r'rv�rw` Co '�•�'47`' Ck'wMFD Tire coat:or Zino oP the Itoroiri provided to bo p:=4 DInU coincido nith t:!"- cantor line of t:h) ruopcc ivo otrcot q and alloys nitlAn ifnich acrid m-t ionyo exa inclulod, c mvpt: in that por-' t:ion of ))'Ioranco Avenuo' bot woen n ,,.olnt t.ont y-ono (a) foot -out h of tho north lot: line of Crain ut:rcot; c3ot of Jtorouco Imonuo, card Wo couch l:)ti lino of an-potor Stimoti in vialch per ttion t;•.O contor lino of the rwit!=W chill coincide with a Una Ith ara ckrtoan (la) :Coat woof: or tho owt; lot limo of aald 'loacncc Avom3o. Tho vldfih•.or tho ro3dT:ayo Imroln provided•to •'Lu paved uhall be r'.o rollmmt =ar3tax'Cd In •ncct; Cron baclL .to -Irao% of tho curb horoin- af't`.er opooirled =a at; richt; an, -Ion to tho cantor lino of tihd roapoot- lvo ut;reot; or alloy, ca Ma c':oo mg boo to -wit: Elaronco Avenue: At; th-.o .aoUth .lot lino of •,mpot:or ..'►treat: M rcot. At the north cueb 31us (jr Zr,�W 6troot 24 foot;. At: tlio south curb line of C:min-;troet; 20 foot:. At; t!4 north lot lino of 21i:W �trc.�� 080 Scate At; the Alloyo one hundrod Qirty (130) Scot; cout•h of Impo toy >t:rcot oo At; tho wcat curb lino of oloranco Avonuo 10 :cot;. At; tho c.4at lot lino of Moranco 10 £cot;. AL tho coot; curb lino of :Ioronco Awnuo 1Ci rcot+. At tho cwot: lot; lino of Aoranca lvmua la rcot e .;i).dor ,;trcot: At tb�- anot curb lino of urea= A-7onuo 214 rest e At'i ' t o caut lot lino or '`''10ronac SX f'coti. IZ19198 439 Gain 0troct imat of Ploronoo Avonuo: At tlsa Gont curb lino of 411oranco Avonuo • At ttxo woot lot jigio og i,jokonco Avcnuo Crain Otrcai chat of Ploraneo Avanuos At IWIo oast curb lino of. Plorchco Avonuo At,tho cant lot lino of Floronco Avonuo Alloy tro hundroa eit Loon -(fta) Foot Wont& of Grconibaf'Utroott , 24 foot. 24 root. I. foot. 24 foot* At tho* c3at curb,lino of :'lortinco .Avonuo 14 foot. At tho• cant, lot lino of E%oronoo Avonuo 14 foot. aonloaP Gtroots At tho mot curb lino of . i loronco Avonuo At tim'Coot lot lino of Moronco Avonuo At tho oaot curb lino of Floronaa Avonuo. At tho, oaat *lot lino of Moranco Avonuo Alloy ona hundrad fifty (150) fact aotath of arocsnleaf Gtroot s At tho cant curb 11no or laoronco Avonuo At tho oaat lot lino of 1'ioranco Avonuo Lao Gtroots At tho coot curb lino of ZUr=c3o Avonuo At tho coot lot lino of �'lorcnco Avonuo At tho cwt curb lino of Fl.oronao Avcmuo At tho cwt lot 11no of L'3.6mnco Avc:nuo 2A f. Cc t a 24 foot. 24 foot. 24 3.0 root. 16 foot. 24 root. 24 foot,. 24 foot. 24 foot. The width of roadway at intermediate points shall be respectively proportional to the foregoing. GRADE OF ROADWAY AND CURB The grade of the roadways herein provided to be paved, when finished, and the grade of the top of the curb hereinafter specified, when completed and set in place, are hereby established as follows, measured in feet and dec- imal parts of a foot above the datum plane of the City of Evanston, to -wit: Transverse Section of Roadway. Crown Line. Gutter Line. Top of Curb. ,Mtn=33- tgaa tll vooD 87.1O IW i tit Z2nt; ai g . 03) .' 3 At tho nunt.71 tat 1Vn 02 ,+s MOO - IM is 3 cmtar sir Aft -,cc ��I �.Z`wwta C=t !vw:yl2,,..,,"��iy'it.'` tAti/ PIu.e G�+ ay G� A 23,00 s r. r.4aa� at Q3 =0r210pj 1$no O O i.t�O:"" afia ti.i t�=Uth SA= At.� �Ioa �► MCA 0040 a is rqllzt CM tm4 .�g*.Jr3, tLn =030 S3.60 & .AI�t . MIW C,.= 02 Dmvatw chi`. t At to o=t lot I= 02 nwcnoo tivc +� �} ,. t 'At` lot 26fo tiYSr 440 _ At tbo C=t lot b morcDOO ATE 1?*13 10-1 `0 Graff trout t v or riamad At t lot lim or Avon=i At the cWt Yot ILUM Of pa x lot��t�l �k:.��.��,rsOr�r. ,� lot Una *i Crain 1-Urcot V10ron• O AvM=- , .70 At WM mot 10to Uno 02 � Morcwo Avo= WAS 23.20 23. (15 At tbz lot 11110 or AUK' MOAM ftC9 E (10) toct n or lam co� 10. Lim of :erg k0. At tW CWt XOt 1=2 CO LOO ,1L'4'z'COC: At Q0 CWt U11' lk= off' Alf 4,11=0- At W10 vont lot It= or The grade of the crown line, gutter line and top of curb at intermediate points shall be respectively proportional to the foregoing. The datum plane hereinafter mentioned is the plane of low water mark of Lake Michigan in the year A. D., 1847, as established by the Trustees of the Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the north -.vest corner of Davis Street and Sherman Avenue, in said City of Evanston. The crown line hereinbefore mentioned shall be identical with the center line of the respective road- ways when completed. The gutter line hereinbefore mentioned shall be identical with the line where the surface of the road- ways when completed touches the face of the curbing on both sides of the respective roadways. The surface of the roadways herein provided to be_paved when completed shall conform to the arc of a circle passing through the respective crown and gutter lines, and shall be true and symmetrical. GRADING Prior to laying down the pavement thereon, the roadways specified to be paved shall be cleaned in a thorough and workmanlike manner of all debris and rubbish, such as deteriorated pavements, crossings, box , etc. The sub -grade shall be prepared by excavating the soil, or filling thereupon drains, culverts,.Astumps with other and suitable soil to such depths and shapes as will insure the finished pavement being at the grade established therefor. Spongy earth that is unfit to be left in the sub -grade shall be removed by the con- tractor without extra charge. The sub -grade shall be rolled with a suitable self-propelling roller or flooded with water, or both as may be found necessary and practicable to thoroughly compact same. Any depressions that may appear as the rolling or flooding of the sub -grade progresses shall be filled upon at the surface with suitable soil and thoroughly com- pacted as before specified. 441 CONCRETE CURB A concrete curb shall be constructed on both sides of the respective roadways herein provided to be paved. Said curb shall consist of a mixture, by volume, of one part of Portland cement, two parts of sand and four parts of crushed gravel or stone. Except that the top and exposed roadway face of the curb shall be surfaced to a depth of one-half inch with a mortar composed of two parts of Portland - cement and. three parts of clean, sharp sand of the sizes and quality hereinafter specified for the sand to be used .in making this curb. The crushed gravel or stone specified for the body of the curb shall be clean, hard, free from dust, loam, vegetable or other deleterious matter, and shall show sharp edged cubical fracturing. This crushed gravel or stone shall be of variable sizes, grading from a maximum dimension of one inch down to a minimum of one-fourth inch, and so proportioned that the particles capable of passing through a screen of three -fourths inch mesh will fill the voids in the particles retained on such size screen, but without more than ten per cent excess of the smaller particles. The sand specified for the curb shall be free from clay, loam, vegetable or other deleterious matter. The grain shall be angular, and shall range in size from one -quarter inch down to the finest, but not more than 3 per cent shall pass through a seive having (100) one hundred meshes per lineal inch. The sand shall be of such quality that mortar composed of one part of the cement hereinbefore specified and three parts of the sand, by weight, when made into briquetts, will develop a tensile strength at least equal to the strength of a mortar of the same consistency and proportions made with the same cement and Standard Ottawa sand. The Portland cement specified for the curb shall be of such quality that representative samples collected form the shipments made for the job shall be capable. of passing the tests for fineness, soundness, initial setting, and tensile strength hereinafter set forth for Portland cement. The sand and crushed gravel or stone shall be clean when delivered on the job and shall be kept clean until used. In no case shall the sand and crushed gravel or stone when used, contain frost or lumps of froz- en matter. Forms shall be used in constructing the curb. The forms shall be sound, free from warp, and of suffici- ent strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established lines and grades. Wooden forms shall be thoroughly wetted and metal forms shall be oiled be- fore concrete is deposited against them. All mortar and dirt shall be removed from forms that have pre- viously been used. The ingredients specified for the body of the curb shall be mixed in a batch machine mixer of a type that will insure a uniform mixture and product. Clean water, free from oil, acid, alkali, or vegetable matter shall be admitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the crushed gravel or stone from the mortar. Provided, that on such portions of the work as it may be imprac- ticable to use the machine mixer, thorough and efficient hand mixing will be allowed. The equipment used, if any, for hand mixing shall be as specified for mixing the surfacing mortar. The ingredients specified for the mortar to be used in surfacing the top and exposed roadway face of the curb shall be mixed on a movable, tight iron platform, of ample size to accommodate the manipulations specified, without getting the ingredients off the platform or mixed with dirt. The Portland cement and sand specified for surfacing portions of the curb shall be thoroughly mixed on the platform with hoes or shovels, and until the color becomes uniform, after which sufficient water, of the quality hereinbefore required, shall be gently added, while the mixing continues, to produce a stiff and homogeneous mortar. The concrete and the finishing mortar after being prepared as specified shall be promptly deposited and compacted in the forms, in layers not exceeding six inches in depth. The back of the curb shall be worked with a spade to secure a well filled surface. The front upper edge of the curb shall be rounded to a radius of one and one-half inches in such manner that the planes of the top and roadway face of the curb will be tan- gent to the curve described by said radius. As soon as the cement has sufficiently set, the forms shall be re- moved from the face of the curb; and the face mortar shall be promptly troweled down hard and smooth, drawing the cement from the crushed gravel or stone as little as possible. The gloss shall be removed with a wet brush. The curb shall be constructed in sections not less than four feet nor more than six feet in length. In con- structing the curb, all templates used to form the sections shall be kept perpendicular to the top of the curb. All joints shall be neatly tool finished. The joint marking shall correspond to the joint made by the tem- plates. The curb shall be twenty-four inches in depth, and the thickness shall vary uniformly from six inches at the top to eight inches at the bottom of the curb. The curb shall be built in such manner that the road- way face will be vertical; that the t op will be at the grade hereinbefore established; and that the back of the curb, at the top thereof shall be on the lines hereinbefore established. The curb at intersecting streets and alleys shall be constructed to true curves tangent to the intersecting curb lines proper. The radius of the curve to which the back of the curb shall conform shall be ten feet for intersecting street and six feet for intersecting alley curb lines. Except as above specified, for intersecting street and alley curb lines, the curb shall be constructed paralleled to the center line of the respective road- ways herein provided to be paved. The curb shall be constructed at such distances from the center line of the roadways, herein provided to be paved, as will give the respective width of roadways hereinbefore speci- fied and established, when measured from back to back of curb in the manner and on the lines hereinbefore set forth. f 4. Trenches shall be excavated to sufficient width and depth to receive the curb and necessary moulding frames. Wherever other than sandy soil is encountered the curb trenches shall be excavated to a depth of six inches below the bottom of the curb and shall be re -filled to such depth with sand or cinders. The sand or cinders shall be compacted with water or by hand tampers. The frames shall be securely fastened in place and shall be accurately brought to line and grade before the are filled with concrete. The y grade and line k� to which the frames are to be set shall be such as is necessary to insure the finished curb being true to the lines and grades hereinbefore established therefor. PORTLAND CEMENT CONCRETE FOUNDATION Upon the sub -grade prepared as hereinbefore specified, shall be constructed a Portland cement concrete base or foundation, five (5) inches thick. The concrete shall be composed by volume, of one (1) part of Portland cement; three (3) parts of clean, hard grained, and sharp sand; and five (5) parts of clean, hard limestone or gravel broken or graded so as to yield a range of sizes (in longest dimension) from two (2) inches down to one-half (1-2) inch, and so proportioned as to produce a maximum number and minimum volume of interstices in the aggregate. The concrete shall be prepared by mixing the cement, sand and stone or gravel in an approved batch mixer with sufficient clean water and mixing sufficiently to produce a plasticity best suited to the condi- tions of weather and soil. The concrete mixed as above specified, shall be promptly spread on the surface of the sub -grade to the required thickness, and to such shape and grade as will insure the upper surface of the foundation after be- ing thoroughly compacted by rolling or tamping, being parallel with and three (3) inches below the grade hereinbefore specified for the finished roadway. The upper surface of the foundation shall not be troweled smooth but shall be left moderately rough to grip the bituminous macadam pavement specified to be laid lthereon. BITUM1.,\OUS MACADAM PAVEMENT Upon the base or foundation, prepared as hereinbefore specified, there shall be spread a layer of clean, hard, broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of three (3) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be evenly applied to the limestone ( at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure not less than one and three quarters (1 3-4) gallons thereof being evenly spread on and used in each and every square yard of the roadway, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the :surface to which the same shall have been applied shall be uniformly covered with`dry and hard limestone screenings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size rang- ing from the largest particle that would pass through a sieve having circular holes three -fourths inch in ' diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diam- eter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screen- ings the roadway so covered, shall be given a thorough rolling with a roller of the weight and type herein - before named. This rolling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the roadway shall next be thoroughly cleaned of all loose stone, dirt, leaves or other I� i foreign material thereon. After being so cleaned there shall be evenly applied to the surface of the pavement a c e second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread as to insure not less than three quarters (3-4) gallon thereof being evenly spread and used on each and every square yard of road- way. Immediately after the second application of asphaltic cement is made and spread and progressing therewith there shall be evenly spread on the surface of the roadway so treated, clean, dry, hard granite hips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one- ig•hth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one=Hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square .yard of the roadway. A final rolling of the roadway shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the roadway is thoroughly compacted, and brought to a surface, free from de- pressions and true to form and grade. I Any and all depressions developing during progress of the rolling, required in process of constructing the pavement herein provided to be built, shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The gutters shall be kept trimmed to the required thickness and grade as the work progresses. �1Z 9 It 9 Y : =RTH The, cubic ardage of stone, herein required, shall be verified })y measurement of vo cars, or other cnveyances,'transporting same to said City, and prior to initial unloading, and `hall be ther verified byl measured length of dumps and height of grade marks on the work. The stone shall hauled on to the work in boxes of uniform size and contents and of such shape as to enable an easy and e) determination of the volume contained therein to be made on the site. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following require ments and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural as- phalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so prepared for use as to best adapted to the climatic and traffic conditions of the roadwaI ' on which it is tlo be used. ! - (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit un- der 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be pres- ent in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester.,l' (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per, . cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95%. (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98 /% shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in 75 degrees Baume petroleum naptha, at the al`r temperature to the extent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 perl cent of fixed carbon or residue coke. CATCHBASINS For the purpose of receiving storm waters from the surface of the roadway or roadways, as the case may be, herein provided to be paved 23 catchbasins shall be constructed at the necessary points along the sides of the afore- said roadway or roadways. Said catchbasins shall be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catchbasins, when in place, to the upper surface of the proposed curbing. Said catchbasins shall be cylindrical in shape having an internal diameter of forty-two (42) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty- four (24) inches at Ithe top of the masonry by means of eight (8) header courses of brick laid endwise and horizon- tally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catchbasins. Said catchbasins shall have walls eight (8) inches trick, built (except as above specified for header courses) alternate vertical and horizontal courses. The brick used in the construction of said catchbasins shall be thorou€ wetted with water before being used and -shall be laid in a mortar composed by volume of one (1) part of Portl cement of the best quality and one and one-half (1%) parts of clean, sharp sand mixed with sufficient clean w; to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said cal basins shall each rest on a solid bottom of two (2) inch pine planks laid closely in single thickness and securely spi to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure sixty (60) inches in diameter and shall have upper side placed five and one-half (5/) feet below the upper surface of the brick wall for said catchbasins. Said catc basins shall be connected with the sewer or sewers, as the case may be, now existing or herein provided to be cc structed, as the case may be, in and along the center line of the said roadway or roadways at the side of whicli t respective catchbasins are to be constructed. Said catchbasins shall be connected with the sewer or sewers aforesa by means of vitrified, salt glazed, tile pipe having an internal diameter of -nine (9) inches and of the type known "Bell and Spigot" the metal of which pipe shall be thirteen -sixteenths (13/16) of an inch in thickness and shall be n( less than two (2) let in length. Said pipe shall be straight, smooth, thoroughly vitrified, salt glazed, free from crac and blisters, and in all respects of the best quality and workmanship. All joints between the pipes shall be securely seal With a mortar of the quality herein required for brick walls in catch -basins. - 444.- Ny' each catchbasin conneciicin sh- IF art in a. 'nine (9) inch vitrified, salt glazed, tile pipe "Y" branch of the quality d laid in the manner required. for '8wers, which "Y" branch shall be set in the sewer at a point not less than six (6) A in advance of the catchbasin, measured along and in the downstream direction of the sewer from a point on said ,ver directly opposite the catchbasin. The pipes shall be laid true to line and grade and the connection shall enter the tchbasin at a point two and one-half (2/ ) feet above the plank bottom. The pipe entering the catchbasin through the ick walls thereof shall be an 'elbow with the bell end turned downward inside the catchbasin to form a trap. The pipe shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior iameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. 'he materials excavated shall be kept compactly along the sides of the trenches and shall be backfilled as soon as prac- cable in order to occasion the least possible inconvenience to the public in use of the street. The trenches shall be romptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed nder and around the pipes. Said catchbasins shall each be equipped and fitted with a castiron cover weighing not less than three hundred arty (330) pounds and having a vertical height of thirteen (13) inches, which cover shall be of the same size and tern or equal in size, quality and workmanship to the castiron covers now in use on existing catchbasins in Dempster kfurnished eet between Ridge Avenue and Dodge Avenue in said City of Evanston. Said catchbasin covers herein provided to and set shall rest on the walls of the catchbasins herein specified to be constructed. Said covers shall be bedded in a mortar of the quality herein required for brick walls in said catchbasins. The walls shall be built to uch height as will bring the tops of the covers when set in place, to the elevations hereinbefore specified for the top 'f the curb at the points where said catchbasins are to be located. MANHOLES TO BE ADJUSTED AND BROUGHT TO GRADE The S brick manholes now located within the space herein provided to be paved, and which are already equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to bring the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to the walls of said manholes as may be necessary to bring the covers of the manholes to the height above specified and also to insure a safe and serviceable roadway. In malting said adjustment, hard burned sewer brick laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one- kalf (1/) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. aid covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. VALVE CHAMBERS TO BE ADJUSTED AND BROUGHT TO GRADE The 5 brick valve chambers now located within the space herein provided to be paved, and which are ready equipped with cast iron covers, shall have their covers raised or lowered, as the case may be, to -ing the tops thereof to the surface of the pavement when finished. Such adjustment shall be made to e walls of said valve chambers as may be necessary to bring the covers to the height above specified, and so to insure a safe and serviceable roadway. In making said adjustment, hard burned sewer brick laid in mortar, composed by volume of one (1) part of Portland cement of the best quality and one and one-half . 1-2) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity, shall be used. ,Iid covers shall be imbedded in a mortar of the kind and quality required for use in adjusting said walls. CATCH BASINS TO BE ADJUSTED AND BROUGHT TO GRADE The 4 brick catch basins now located along the sides of the roadway or roadways, as the case may herein provided to be paved, shall have their covers raised or lowered as the case may be in such manner to bring the tops thereof to the surface of the adjacent ground. .Such adjustments as may be necessary all be made to the walls of said catch -basins with hard burned sewer brick laid in a mortar composed by lume of one (1) part of Portland cement of the best quality and one and one-half (1%) parts of clean arp, sand mixed with sufficient clean water to give proper plasticity. Said covers shall be imbedded in )rtar of the quality hereinbefore specified in adjusting said walls. Said catch -basins shall be connected to the curbs by means of sewer pipes of the kind, size and quality d laid in the manner hereinbefore specified for pipe used in constructing surface drainage sewers. Openings shall be made in curbs at points of said connections in such manner as to permit free and un- -rupted passage of storm waters, from the surface of the pavement hereinbefore specified, to, said basins. ADJUSTMENT OF PRESENT XIACADAM PAVING The present macadam paving where the same adjoins the proposed improvement shall be adjusted in uch manner that after having been excavated or filled upon, as the case may be, with materials of kind and uality composing said macadam paving and, having been thoroughly compacted it shall form a base or founda- on for a bituminous macadam pavement to be placed thereon. The upper surface of said base or foundation ?hen completed shall be two (2) inches below the finished grade of the proposed improvement where same djoins said macadam paving. Upon the base or foundation, prepared as hereinbefore specified, there shall be spread, a laver of clean, and broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension f three -fourths inch. This layer of limestone shall be evenly .spread, and in sufficient quantity to insure a sickness of two (2) inches thereof being spread, on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial lling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as on as the stone is set and ceases to creep under action of the roller. at9198 44.1; As soon as the initial rolling of the limestone is finished, and the laver thereof is dry, there shall be applied to the limestone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic ce- ment in such quantities as to insure not less than one(1) gallon thereof being evenly spread on and used in each and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. Immediatelv after, and progressing with, the application of asphaltic cement hereinbefore required, the sur- face to which the same shall have been applied shall be uniformly covered with dry and hard limestone screen- ings, free from clay, loam, dust, vegetable' or other deleterious substances, and broken to a size ranging from the largest particle that would, pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diameter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screenings the paving so covered, shall be given a thorough rolling *ith a roller of the weight and type hereinbefore named. This roll- ing shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the paving shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be applied to the surface a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread, as to insure not less than three-quarters (Y4) gallon thereof being evenly spread and used on each and every square yard of paving. Immediately after the second, appli- cation of asphaltic cement is inade and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, ,clean, dry,, hard granite chips, of a size ranging from a maximum dimension of three - fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard, thereof being evenly spread and used on each and every square yard of paving. A final rolling of the paving shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the pavement is thoroughly compacted, and brought to a surface, free from depressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The asphaltic cement used in the improvement herein provided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following require- ments and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural asphalt and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so prepared for use as to best adapt it to the climatic and traffic conditions of the roadway on which it is to be used. (2). Its specific gravity shall he greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be present in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 95ofo. (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98Y27o shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in petroleum naptha, at the air temperature to the ex- tent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having. one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. -Al 77, - - - 446 --- - --. R PORTLAND CEMENT -- _ -- — The Portland cement to' be used in the improvement herein provided to be made shall be .of such qual- that representative samples selected from shipment shall be capable of passing the following tests for Mess, soundness, initial setting and tensile. strength to -wit: Fineness. The' cement shall be so ground that 92 % will pass through a standard sieve, having 10,000 aeshes and 75% will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at he center and tapered to a featheredge at the circumference, made on glass, shall remain in the air, pro- ected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and hall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, varping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water ix days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take itial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten )urs. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile igth not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the ,period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or '� stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The tile pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said !pipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch, All the material used in the construction of the improovement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, s both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of two `Ithousand six hundred eighty-four and(25/100 .......... dollars ($ 2, 684.25 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sun of tvr0 thousand six hundred eighty-four and 25/100 ............................... dollars ($ 2, 684, 25 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and' also the assessment on each lot and parcel of land therein assessed, shall be divided into ten ( 10 )nstallments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. 1Z19a98 -- 447 Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public `Forks, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. A.uo�td 1'y the City Cocnci of the City of Evenstm 04 tint/Qdciay of-- ----- ------ A. U. 19_ AErovvred&__City Week Mayor. Recommendation, Estimate and -Ordinance. RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled We herewith submit an ordinance providing that thO lC0110 A2,107 39ifla noot of and a4jol>olng Loto ono (1) to rice (o ) (both Incluolvo) r Blook oov= (lie UrAo s Addition to uv« noton t aloo rMot of and odjolnlng Loto coo (1) to row (4) (both Incluolvo ), hloft t,6 (4)o &41:00nfc Addltlort to fh=otono =tonding from tho south lot- Uno of &M STRtrUT to tho ocuth lI't> t .of Jaoh i ls ©a edSt3dcax1l to nctone ,In the MY Of LVr..00tono 9oUnty of Coolie Stato of 1111nolo. -be lrgwovad by GradInSt pavUa to a width of f"iftow (15) foot vith a portlania �oo=t -nonoroto ptava=mt� oix (a) Inobioo In this ooal�. os 000d of kort«► mid oa=t s aarA and. Gravol cdn*d by volume In ratloo of 1:2 s 3 r©a- voctivol,y* vith ouffloleaat; ctoan vator to 61#0 proper plaotl.citys uolna a bltuminolao flUaa atrlp (bavLng a width of Glz (a) Inchoo and a thlob« noes of onoobalf for 04=10n JoInt 3 In j avomnte conotracto. Ina' tToco arjav ' , ourfemi dralmoo savor of vitritleds Galt glazed e t 1lo VIVPP InVIM € n Intorml d1owtor of nitro (9) Indboo (tho =116 of t7hle pi oha l Invo a t�akncoa of th1vtoon-ainteenthe (15/;o) of an b< each boolne eylizarleal In Gbapo# h3vl" an Intornml diamotor of tUrtyw.►oiko (30) Inobac of hard burnad oaaor brloh (the =no of thloh oatch baoln dhall be cl&t (8) Inchon In tbichneas ana bavo a . 'V0VticS1 halms of fovrt (4) teat) oaald ontoh bacla to bo p mldad with a 008t Iron caster volghlaa3 not l000 t hn tbroo baAred and oluty (IQo ) poaundo a4 a► circular OAM 'bottom trO (2) IaoWa in t hlolm000 and to bo comweted alth tho burfac a dminago ocoor by m=w of vitrified* m1t 82ci=4 # . tllta Alpo WVIna an Inter dianotor of oft (o) Inchoo, (tho rally of Obsfch pfpo cell, b ave a thlolmaco of throe-fourtbo (3/4) of an lath) ronholo. c lindrioml in abapo havislg an interml d lemte r i of Wdrty.alx (N) Ina 0a of bnrd bumod comr belobs (tho aaU0 of L tWOU wwol,o abal,l ba olgbt (a) inahco In t;hlolmoaa raid bravo ek vartic.-Al h3lGht of ftvo (0) foot) cold ov.Uw10 to bo provIdod vith a cast; iron 0070v vclphlM not loco than flve Elundred forty (540) poundas and e4w. Junt:lna tho present woodlam pavonant Wjolnlna € nd emnocting altla tho opooatiQ Im9r0v .m9nt; z togotluv with an cotimto of the coot of mild cMrovowlt an4 rocowmndl tho paonago of ca14 or4lmnwo OM tho MkInS Of the �V"Znt Oont=Vlatod tharolm Rappectrully cut1attede jV �9 ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled : The Board of Local Improvements of the City of Evanston having adopted a resolution that r • ^ - C � _� 0 i S v c c. � A A n 9 -• n r � •+ • n 1 r � �' ... r1 0 � • <' o? J c� a t P _ O f C 0 c C �- �• n '1 � %Z 0198 27 sq, yda. of m cadan pava mnt adjusted C; C1.60 per sq.yd. v 43.20 Bar lawful expenses attending tho proceedings for mking said improvomant and the coat of umkin- and collecting the anscon- ment therefor, not to exceed :six (6) par centum of the above, to -nit: �3,666.F35........................................... 220.01 Total............. F3,886.86 And I hereby certify that in my opinion the above estizate door not oxccod the probable coot of the above proposed inprovemant and the lawful expenses attending the aam3.• Dated, Dvnnaton, Illlinois, .................................. Engineer of the Dowrd of I.c,eal Irs- provemcnto of the City of Evanston. An Ordinance. ravlaAnj ttnt tto tnuic %:rl , vo,.t off' c.nq edicanw; ,"-*to o2J () t0 S 1vo (0) (boTa lZuluolvo) # DICC11; covin 191s Ualcm ":c';1 t1Gz to aIv t mat aA CX4 cdscsLlms Toto a-na * tm ;2- a-. (4) (testis anoltl[)m /` o caCou wo (J j o ni nupnto t g1,4moz to i;t7...autions on-tczArr, ewes C-..a uoat% lot 2.100 of rl-' .3 Or-1 to tho m n^."11 2-Ina 0 boa» .o: • : ; :.Cdatloa to-V.:notaao Are Um c9t,1 nS cm"-Ity 0� :'W"s ::t,to off' ii-, ' ioac o :-,o rz,,." 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("GO; �.... :.i i=.'.:'j c.1 CieiL`:"2� :J4 Ljj Wit: t;otta,_3 tilo (C) In %Q„ 2?C: D C ::� to bi by =.�to oS Vzu- 90e :0 c ,L.,,..,,..• �'i�S�C7 �: ,c.J.f vLC3t , CY:r`! tri:&C. �t:V OSc 01= 40, trr:4...:0 m v...._. �.; � o ' y � 012 ro C3U tnva ao+�1{ vy r� eo1•• 0: C.:�i�j �j�y a'l�l� try �.r..win} Qrt1 r'�f'+40f::1 i',�+i�c-ni A, L��4�ijt3 4.� Vtn,;, yGn �A�=:W.::.��--'A �i��a �u� .11zu+rl zr4--0!..i �+••'1�.�q q {J 'Si�:� • �rr1 l.��4 {ire yr��y Y"S r.tly+Yit Uyii.�iryrLs# �4�3.1CsZ.��L rcJ �rL ���1 i . at.--Olu c::.•r.11 bc:� ulalt (01"' i1ncizoo 1iI l-4SV_-M1 .�►t �ia�'r? i- iVli iy ffv,rtAcA &X J=JL/�;/zt 0�'�+/S+k.voof]��(0) �Sycot()� J:y�1y11d (�'���a•( to�'�0��'�1r�ov"*f �� LAt:l /��w,J % 1GM(��4� i y4��L''jjl�Vq�.JII�/{��7.J 4• �/�"'!"' ' J ��(V�.� t�f {v1��.�R.�`�~�1i�.1}�'�µ Q��yv M�il��r.'�j ..`a�f`4"S /��•'1/•�J�yt� M,T-4o o Cna cl jltot.$P,;, , Un p. t,.; cat ufia= Y'1......��.i� nr'kj D2.�;su,; ho czao T.SUAns WM CA147 OV Comt�7 of Co *r• .Aata e U12nogDo tL-3 mtV100. cx1�� : ot�r4 aoacnIaty o,:ta t3o.,ar9. t3o or cIIAc a^ 2 :rcva gnu to cc folIcu`i• too.:Atl . iimt = t u,:Alc lygnl tmot oR ma ano (i) to cavo (G . tt Ta Cnolno t,70 o ij .kcc' ; 007c'n ?) . Calm -,-4a1t 1m to alloy r14., `► cc C'.e— '�:� o1'A2s 'r%, to o /■x `wto-! r..._ {4�)�[ 4Usoh(� .1•`�4��/fi'Y VQOYIw..a' ��� #M?� V..r�✓�1,.��% .��l l�Q»LL� Y� M�+F•.{M��..is .ir..YV `r`..i 4ir4• Y from i3; c.� lot zl o 6C t t. to tic. corm.-% UrI^ eS 4, c,alticn Co iln GI-10 cf c:.: 0C 7,211t10900 Lao a 'Z C=0 to 450 The center line of the pavement herein provided to be oonstruoted shall coincide with the center line of the alley within which said pavement is included. `;.'idth of Pavement, The width of the pavement her -in provided to be con- structed ahall be fifteen (15) feet. Gr�oi' kave=rA The grade of the upper surface of the finished pavement herein provided to be constructed is hereby established as follows, measured in feet and deeim i parts of u foot above the datum of the city of Evanston, to -wit: Transverse erection of ,alley cuter Edges Center line of Pavement of lsvement At the south lot line of ?.ee Street 24.00 43.70 At a -pint one hundred (100) feet south of the south lot line of Lee Street. 24.50 24.25 At a point two hundred sixty (260) feet south of tho south lot line of Lee street. 23.70 23.45 At the south line of Jackson's Addn. to Ivanston. 24.57 24.32 ALLEY PAVING The grade of the center line and outer edges of the pavement at intermediate points shall be respec- tively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane of the low water mark of Lake Michigan in the year A. D. 1847, as established by the Trustees of Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the northwest corner of Davis street and Sherman Avenue, in said City of Evanston. The upper surface of the pavement herein provided to be constructed, when completed, shall conform to the arc of a circle passing through the respective grade points in the center line and at the outer edges of xne pavement, and shall be true and symmetrical. GRADING The alley herein provided to be improved shall be cleaned prior to the paving thereof, in a thorough manner of all deteriorated planking, blocking or other debris. The soil of the roadway shall then be ex- avated or filled upon with other suitable soil, as the case may be, to such depth and shape as will bring he upper surface of the finished pavement, when constructed as hereinafter specified, to the elevations and grades hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable self- propelling roller or flooding with water as the case may require. Depressions or holes appearing as the pre- paration of the sub -grade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left in the sub -grade, shall be removed by the contractor without extra charge. CONCRETE PAVEMENT —ALLEY Upon the subgrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement, lomposed of Portland cement, sand and gravel mixed by volume in ratios of one part of cement, two parts I:and, and three parts of gravel with sufficient clean water to give proper plasticity and in the manner here- paf ter set forth. The concrete shall be spread on the sub -grade in such quantity and to such form that af- ter being compacted in place it shall have a uniform thickness of six inches. The Portland cement to be used in making this concrete pavement shall be of such quality that repre- sentative samples collected from shipments made for the job shall be capable of passing the following tests for fineness, soundness, initial setting, and tensile strength, to -wit Fineness. The cement shall be ground so that 92 % will pass through a standard sieve, having 10,000 { meshes and 75% will pass through a sieve having 40,000 meshes per square inch. R IZ9i98 - . 451 Soundness. A pat of neat cement, three and one=half_ inches in diameter, one-half inch in thickness at, the center and tapered to a feather edge at the cirtumference, made on glass, shall remain in the air, prod tected by,a damp cloth, for twenty-four hours, and. shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no check- ing, warping or swelling. Broken briquette of the neat cement which have remained 'in air one day and'in' water six days shall likewise withstand the steaming and boiling specified for the neat pat. Setting. The cement when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ..................... ................................. 175 lbs. 7 days (1 day in moist air, 6 days in water) .................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) .................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength "r days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. The sand to be used for making the concrete shall be free from dust, clay, loam, vegetable or other deleterious matter. The grains of sand shall be angular and shall range in size from one -quarter inch down to the finest; but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind- ' drifted sand shall not be used. The sand shall be of such quality that the mortar composed of one part of the cement hereinbefore specified and three parts of sand, by weight, when made into briquettes, will de- velop a tensile strength at least equal to the strength of a mortar of the same consistency and proportion„ made with the same cement and Standard Ottawa sand. In no case shall the sand, when used for ,this concrete, contain frost or lumps of frozen matter. The gravel to be used in making this concrete shall be clean, hard, free from dust, loam, vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable sizes grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (1-4) inch. In no case shall the gravel when used for this concrete contain frost or lumps of frozen matter. The sand and gravel shall be clean when delivered on the job, and shall be kept clean until used. The method used for measuring the ingredients in the concrete shall be one that will insure a unAorm proportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be considered one cubic foot. The concrete shall be mixed in a batch machine mixer of a type that -,vill insure a uniform distribution of the ingredients throughout the mass. Ingredients of the concrete or mortar shall be mixed to the de- sired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in color, and homogeneous. Clean water, free from oil, acid, alkali or vegetable matter shall be ad- mitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush i to the surface under light tamping, but which can be handled without causing a separation of the gravel from the mortar. , The concrete shall be handled rapidly from the mixer to its place in the pavement. Successive batches shall be deposited in place on the sub -grade in a continuous operation so that sections of the pavement be- t-,veen expansion joints, hereinafter specified, shall be entirely completed and without the use of inter- ; mediate cross forms or bulk -heads. Concrete shall not be retempered or used that has partially hardened. The concrete shall be compacted and brought to the established grade and shaped with a template or straight° edge, and shall be brought to a comparatively even surface. After the concrete has been so brought to grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even sur- face. Said roller shall not be less than five feet in length, and not less than eight (8) inches not more than twelve (12) inches in diameter and weighing not less than one hundred pounds (100 lbs.). The roller shall be operated across the pavement from side to side of same, by means of ropes attached to each side of the roller, at such angle with the center line of the pavement as to permit the roller to advance along. the pavement t�vo feet for each time across. After the roller has covered a given area in the manner de- scribed, the same area shall be similarly rolled by the roller for not less than three (3) times at intervals of fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may be necessary to remove excess water. After the rolling has been completed the pavement shall be finished by two (2) applications of a bel made of canvas, not less than six (6) inches wide and not less than two (2) feet longer than the width of the pavement. For the first application, vigorous strokes at least twelve (12) inches long shall be used. The longs tudinal movement of the belt along the pavement shall be very slight. The second application of the belt shall be immediately after the water glaze or sheen disappears, and ' the stroke of the belt shall be not more than four (4) inches, and the longitudinal movement shall be a I' continuous forward movement. A r 452 A suitable bridge to span the width of the pavement shall be used to finish the joints, no part -of which (-shall be in contact with the finished work, E A notched straight edge ten (10) feet in length shall ,be used for testing each transverse joint, prior to and subsequent to final finishing. The straight edge shall be placed over the joint, -parallel to the center line of the pavement and moved across from curb to curb. When the surface of the concrete upon testing shows to be high or low, concrete will be added or removed to bring the surface its true shape. The concrete adjoining transverse joints shall be dense in character and after rolling shall be finished with a wood float, which is divided through the center and which will permit finishing on both sides of the filler at the same time. The finished surface of the concrete shall not vary more than one -eighth (1-8) of an inch from a two !Foot straight edge placed upon the concrete in any position. Workmen shall not walk on the freshly laid concrete; and no one shall be allowed on the concrete after it has been worked into form and position with a template or straight edge, until it has thoroughly hardened. EXPANSION JOINTS Transverse expansion joints not less than three -eighths (318) inch or more than one-half (112) inch in width shall be placed across the pavement at right angle to the center line of the roadway; spaced so as not to exceed thirty-three and one-third (33 113) feet apart. All expansion joints shall extend through the 'entire thickness of the pavement. In these expansion joints there shall be placed a prepared strip of bi- tuminous filler of the thickness hereinbefore specified for expansion joints and extending from the bottom of the pavement herein specified to the tipper surface of the finished pavement. The upper edges of all joints and the upper outer edges of the pavement shall be neatly troweled to a radius of one -quarter (/) inch. All metal, manholes, catch basin covers, and other fixed objects shall be separated from the concrete pavement by a joint filler of the same character as hereinbefore specified for expansion joints; which joint . filler shall extend through the entire thickness of the pavement. PROTECTION €5 As soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be spray- ed with water; and it shall be kept thoroughly wet for at least ten days. As soon as it can be done without damage to the concrete, the surface thereof, during hot and dry weather and if unshaded shall be covered. With not less than one inch of earth, sawdust, straw or other suitable and available material, which cover- ing shall be kept wet for at least four days after being placed. In dry and hot weather freshly laid con -Crete shall be protected by a canvas covering until it can be sprinkled or covered, as specified. JThe water and concrete aggregates shall be heated if at any time during the progress of the work the mperature is, or from weather reports will likely during the next twenty-four hours drop to (35) thirty- ve degrees Fahrenheit. The concrete shall be protected against freezing for at least ten days after being e aid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strength o resist springing out of shape. The forms shall be securely staked or otherwise held to the established. i line, and their upper edges shall conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited atrainst them. All mortar and dirt shall be removed from forms that have previously been used. The pavement shall be thoroughly cleaned and open to the public as soon as the cement has set suffici- ently to receive the traffic without injury to the surf ace or body of the concrete. SURFACE DRAINAGE SEWER the purpose of carrying off storm waters from the surface of the pavement herein provided to be con- a surface drainage sewer of vitrified, salt glazed, tile pipe shall be laid as hereinafter specified. I sewer shall be laid in open trenches in the ground in such manner as to conform to the elevations, lines des hereinafter specified. The pipe used in the construction of said sewer shall be of the type known as "Bel and Spigot" having an in - it diameter of nine (9) inches, the metal of which pipe shall have a thickness of thirteen -sixteenths (13116) i inch and shall be not less than two (2) feet in length, Cylindrical, straight, smooth, thoroughly vitrified, salt !d, free from cracks or blisters and, of the best quality and workmanship. The joints between the pipes shall :curely sealed with a mortar composed by volume of one (1) part of Portland cement of the best quality and ind, one-half (1/) parts of clean, sharp sand mixed w ith sufficient clean water to give proper plasticity. The is between said pipes shall be wiped and pointed inside the pipes. The interior of the pipes shall be kept free i dirt or refuse of every description and shall be left clean at the completion of the work. The open trenches excavated, to receive said sewer, shall be made at least twelve (12) inches wider than the rior diameter of the pipes so as to give at least (6) inches clearance on both sides of the pipes for sealing joints. materials excavated shall be kept compactly along the sides of the trench and shall be backfilled as soon as ticable in order to occasion the least possible inconvenience to the public in use of the street or alley as the may be. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the s. Suitable soil _shall .be carefully,, paed',,,undor and around the i .l. _. ,_ IZ 0198 453 The open and unconnected ends of said server shall each be securely closed with a salt glazed, vitrified tile disc, and sealed in the manner above specified for joints b etween pipes. Said sewer or sewers as the case may be shall be lai d as follows, to--,vit : In ark -aloe , tho ccntor Brio or mId Alloy• ron and comtoctin, ulth tho comes noo in placo In tho contcr lino of enld Alloy of tho aouth log iSno of Lao Mroot cGuM a d9io tkcnoo of tbroo bma cd (3W) feat. :ho laterml dlam,�or of lZh8o ec-,= dnll bo lino (0) fnchooa rM Ito connocUon rlM £ho aforoc ald ocmar, tbea ohovation of tho inoido bottom of Chlo m=r cbnU bo alC;htcon anS teanty-fivo hmmdrcdtho (ID*2 3# fcot rabovo Cho datum V&ano haroldbaforo datincd >a• tho Gmdo thwroor ctnn Aoo thenco at n unikorm rato to aA ol=tion oZ nlnotuen ond olaty hun4radtho (U *60) fc€ t aixmo mAd dot= at Ito tovni uta. CATCH BASIN For the purpose of receiving storm waters from the surface of the pavement herein provided to be con- structed one catch basin shall be constructed at the necessary point along the center line of said pavement. Said Catch basin shall be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the top of the iron cover herein required for said catch basin when in place, to the upper surface of the proposed pavement. Said catch basin shall be cylindrical in shape having an internal diameter of thirty-six (36) inches at the bottom and, upward°to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by means of three (3) header courses of brick, laid endwise and horizontally, to fit the iron cover hereinafter specified to be furnished and set on the walls of said catch basin. Said catch -basin shall have walls eight (8) inches thick built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch -basin shall be thoroughly wetted with water before being used and. shall be laid in a mortar composed by vol- ume of one (1) part of Portland cement of the best quality and one and one-half (1%) parts of clean, sharp sand mixed - with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch -basin shall each rest on a solid bottom of two (2) inch pine planks, laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6). inches wide. , The said bottom shall be made circular in form, and shall measure fifty-four (54) inches in diameter and shall have its upper side placed four (4) feet below the upper surface of the brick wall far said catch -basin. Said catch -basin shall be connected with the sewer, or sewers as the case may be, now existing, or herein provided to be constructed, as the case may be, in and along the center line of the said pavement, along which center line and over said sewer or sewers, the respective catch -basin is to he constructed. Said catch -basin shall he connected with the sewer or sewers aforesaid by means of vitrified, salt gglazed, tile pilie having an internal diameter of six (6) inches and of the type known as "Bell and Spigot," the metal of which pipes shall be three -fourths (%) of an inch in thickness and shall be not less than two (2) feet in length. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipe shall be securely sealed with mortar of the quality herein required for brick walls in catch=basin. teach catch -basin connection shall start in a six-inch "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the said sewer at a point not less than eight (8) feet in advance of the center of the catch -basin measured along and in the down stream direction of the sewer. The pipe shall be laid true to line and grade and the connection shall enter the catch -basin through the brick wall thereof at a point two and one-half (2%) feet above the top of the plank bottom of said catch -basin. The pipe entering the catch -basin through the brick wall thereof, shall be an elbow with the bell end turned downward inside the catch -basin to form a trap. The pipes shall. be laid in open trenches. The trenches shall he at least twelve (12) inches wider than the exterior diameter of the pipes so as -to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials. excavated shall be kept compactly along the sides of the trenches and shall he hack -filled as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the alley. The trenches shall be promptly back -filled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch -basin shall be equipped .and fitted with a circular cast iron grate cover weighing not less than three hundred and sixty (360) pounds. Said. grate to he so constructed as to freely admit water from the surface of the pavement to the catch -basin, and having a vertical height of nine (9) inches, the opening in said cover shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) inches at the top thereof. The diameter of the lid or grate for said cover shall be 22Y4 inches. Said catch -basin cover herein provided to he furnished and set shall rest on the walls of the catch -basin herein specifie& to be con- structed. Said cover shall he imbedded in a mortar of the quality herein required for brick walls in said catch - basin. The walls shall be built to such height as will bring the top of the cover -,when set in place, to the upper surface of the pavement at point where said catch -basin is located. Said catch -basin herein provided to be con- structed, referring to the vertical axis thereof, shall be located as follows: and tat a Voint too hmidr^d olzty (COO) fcot couth of the couch lot' llno of loco Gt>root. 4-54 MANHOLE One brick manhole shall be built of hard burned sewer brick, upon the sewer or sewers, as the case may be, hereinbefore provided to be constructed and shall be located:at the point hereinafter specified. Said manhole shall be placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbefore speci- fied in such manner as to ])ring the top of the iron cover herein required for said rnanhold when in place to the up- per surface of the proposed pavement. Said manhole shall be cylindrical in shape having an internal diameter of thirty-six (36) inches at the upper surface of the base and upward to the lowest header course being uniformly drawn in to twenty-four (24) inches in diameter at the top of the masonry by means of six (6) header courses of . brick laid endwise and horizontally, the diameter being decreased uniformly by each course to fit the iron cover hereinafter specified to be furnished and set on the walls of said manhole. The walls of said manhole shall rest upon the base thereof without offsetting and shall be eight (8) inches thick, built (except as above specified for header courses) of alternate vertical and horizontal courses of brick. The brick used in the construction of said manhole shall be thoroughly ,vetted -,vith water before he ing placed and, shall be laid in a mortar composed by vol- ume of one (1) part of Portland cement of the best quality and one and one-half (1/) parts of clean sharp sand mixed with sufficient clean• water to give proper plastici ty. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manhole shall begin at a point five (5) inches below the outside bottom of the sewer herein - before specified and shall extend up,,vard to said outside bottom and along the sides of said sewer to a point mid- way between the top and bottom of said sewer, said base to be circular in form, th ediameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manhole shall be neatly removed leaving the lower half thereof to form the invert of the manhole. Said manhole shall he equipped with a circular casti ron cover having a tight lid, weighing not less than five hundred and forty (540) pounds, of the type known as "C hicago City Standard Heavy" having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two (22) and three -fourths (/ij) inches at the top thereof. Said manhole cover herein specified to be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the top of the walls of said manhole which walls shall be built to such height as will bring the top of the cover when set in place, to the sur- face of the pavement hereinbefore specified. Said inanho le herein provided to he constructed, referring to the ver- tical axis thereof, shall be located as follows: ADJUSTMENT OF PRESENT A]ACADAAT PAVING The present macadam paving where the same adjoins the proposed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and quality composing said macadam paving and, having been thoroughly compacted it shall form a base or founda- tion for a bituminous macadam pavement to be placed thereon. The upper surface of said base or foundation when completed shall be two (2) inches below the finished grade of the proposed improvement where same adjoins said macadam paving. Upon the base or foundation, prepared as hereinbefore specified, there shall be spread, a layer of clean, hard broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of two (2) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished., and the layer thereof is dry, there shall be applied to the limestone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic ce- ment in such quantities as to insure not less than one(1) gallon thereof being evenly spread on and used, in each and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. Immediatelv after, and progressing with, the application of asphaltic cement hereinbefore required, the sur- face to which the same shall have been applied shall be uniformly covered with dry and hard limestone screen- ings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size ranging from the largest particle that would, pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diameter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screenings the paving so covered, shall be given a thorough rolling with a roller of the weight and type hereinbefore named. This roll- ing shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the paving shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be applied to the surface a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread, as to insure not less than three-quarters (Y4) gallon thereof being evenly spread and used on each and every square yard of paving. Immediately after the second, appli- cation of asphaltic cement is made and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three - fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard, thereof being evenly spread and used on each and every square yard of paving. MOW- 455 A final rolling of the paving shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue] until the surface of the pavement is thoroughly compacted, and brought to a surface, free from depressions ands . true to form and grade. :. Any and all depressions developing during progress of the rolling, required in process of constructing theij pavement shall be filled, as the rolling continues, with the same respective kind of stone as that on which th roller is operating. The asphaltic cement used in the improvement herein provided, to be made shall be of such quality tha representative samples collected from shipments thereof shall be capable of meeting the following require'' ments and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural asphalt. and a flux to be tested with and proven the hest suited to the asphalt to be used; and shall not be a by-product' of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and be so prepared for use as to best adapt it to the climatic and traffic conditions of the roadway on which it is to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be present in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grains of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit 'for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 957o. (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98%7o shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in. petroleum naptha, at the air temperature to the ex- tent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per i cent of fixed carbon or residue coke. MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand f shall be of such quality that mortar composed of one part of the cement herein specified and three parts I of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be j tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated s particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- itythat representative samples selected from shipment shall be capable of passing the following tests for i fineness, soundness, initial setting and tensile strength to -wit: Fineness. The cement shall be so ground that 92 7o will pass through a standard sieve, having 10,000 meshes and 757o will pass through a sieve having 40;000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected -to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: 4 56 - 11%at Cte'rnent " - - - - - - Age Strength 24 hours in moist air... 7 days (1 day in moist air, 6 days in water) ................ . 17a lbs. 28 days (1 day in inoist air, 27 days in water) .............................. ' ' ' 600 lbs. • ••••••.. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ............................ 28 days (1 day in moist air, 27 days in water) .................... 200 lbs. 275 lbs. The briquettes shall show no retrogression in strength within the .period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The tile pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said ?pipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: inch. For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the improvement hereinbefore specified shall be of the best quality !and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per - :,formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of �pt� O'hi l dollars ($ MAIL ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of two hMdx'l til mty and one b ladU* dollars ($ *01 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into IM installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section i. And for the purpose of anticipating the collection of the second and subsequent installments of 2. said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the "Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of -the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. A�o�ted by h City C UDC' of the City of EvaNOU oa thelQday of_ __ _ ------ A. D. 19 e 3_ A,* roved ., _ -- .-?�- City CiGc - - Mayor. IZ19198 457 Recommendation, Estimate and Ordinance. RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled : We herewith submit .an ordinance providing that the P0110 Alley in Block sic (6)o kedzie and Keeney'fs Addition to Xvanston, extending from the south lot line of Zedsie Street to the north lot line of Koeney Street# 3n the City of Ivanstono, County of Cook, state of t1linolis# be improved by grading, paving to a width of nineteen (lid) feet; with a porrt lad ceslont concrete parent six (a) tnohegl in thickness# composed of Port'Umd cements sand and grovel mixed by volume in ratios of 1:9:3 reepaottvely. with SUM cient clean water to give proper Plagttaity, using a bituminous Filler Ott (having a width of o Q inahas and a thickness of on+ewhaalf (li much) for expmajon joints in paysiWnto constructing necessary surface drain%p sewer of vitri€led, malt glazed# tilepipe ba►ving an internal diameter of nine (9) lnohoes(the walls of which pipe aball have a thhickness of thirteeusistecnths (13j' ) of an inch) # ostoh basiu e, o 1indriorral in shape having an l.nteru:al diaseter of thirty -oft (36) Inches of bard b ed sewer brick (the walls of which catch basins shall be eight (8) Inches inthiokne s and haves >Sa vertical height of four (4) feet)t mid aaatah basins to be provided with a east iron cover weighing not Use than three hundred and sixty (364) pounds and a alrrou3ar plank bottom two (2) inches in thIckness and to be connected to the surfees drainages sower by means of vitrified# salt glasmed# the pipe having an In- ternal diaawter of six (6) Umbess ( walls of w b1ch pipe 0611 have a thickness Of three-foUrtha (3 of an inch)t nwholeo; cylindrical in mopes bavi.ng an intozml diameter of thirty -aft (36) inches of hard burned seiner brick ( the w Ale of which mm- holes>t shall be eight (3) inches ,in thickness and have an average vertical height of six and oneM►baaf (6*) feet). cald ma�leao be provided with a cast iron cover wrelghlag not loan than t'ive hundred forty (040) powide, cad adjusting tho preeent m osda s pave- mont adjoining and connecting with the proposed inorovment; togethe with an estimate of the cost of said impro cement and reoomend that paseaage of said ordinance and the making of the imp..4 i+�..��.:•1t car>r� twVleat+ed therein. Respectfialy oubmlritted, (31 Board of Local ftprovements of the 01ty of Swneton. Dated, lv►nston. 1111txaie, /0 tj� /p.3 ESTIMATE OF F\(;I\' , 3O'%1V) ()i; I.(WAI. 1:kiPROVFNIENTS. To the Mayor and Aldermen of tF� U t; of I r-rr, ^ t",- La) C tea..,.; ,�., ambled : The Board of Loral Improvements of the City of Evanston having adopted a resolution that I a 1 I 3 L 4 y 1 • t t .` t u r 1 e i• c e.•• t• i 1••.♦. y t-!1n9198 459 And I horaby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improvement and the lawful expenses attend ing the same. Engineer of the Board of Local Im. provements of the City of Evanston. Dated, Evanston, Illinois. .9 �An Ordinance. Provlds3 that thn Public Alloy In Bloch o (a) s Koftlo and Ircgnoy'o Addition to LV=oton, entondina fron tho oouth lot 21no of Modato Stroot to tho north lot 11no of 11oonoy Ctwat in tho City of i±vvonatonr County of Cools, Mato of 1111nolo. bo ImMvod by grad , Vzvina to a vidth of ninotaom (10) fcoot, %Ath A North oe=nt conoroto Vavo- mmnt CIA (0) lwhoa In thActsttoaa, aoriVaaQd of Portland ow=t, Qqnd and C;wavol ml=d by velum in ratloo of 1:2:3 roopoativoly, frith ouff' clont clot nator to ,GIvo promr plaLllclty, uoIng a bitu now 9111or QUIP( hzvinC a v1dth of Ok (6) Inohoo end a £hict=oo of ono" (*) inch) for orvanoion jointo .in pave=nt, aonntruatina U000080ry Mrfaao 4rt►Anae0. 00MV, of vitrIflod, salt Clanod• tilo Vigo having an intornal dlcnotor of nine (0) inohoo (tho z-allo of vhi.eh VIVO chnll h-vo a thIeDnoca of thirtoon-a oontho (23/10) of an irk) ca oh b3olm, oylluftloo. In uhapo havinC an Inttorml dlartor of thlrt y-aln (06) In shoo of hard bu nod cou brioh (tho wallo of which catch bao iao till bo of Ght (8) 1nahoo In fi lolmo oo cmd bavo a . v02tIcta host of four (6) toot) cald etch baolno to bo provided trl i o oaflt Iron cover vale not loco tImn tbroo 'hundrod and oixty (u D) pots and a dlra plank bottom to (2) Inoboo in thlokneao and to bo camnectod to the curfaco dralmao cover by mono of vitri- Sfltad, oast d, xaanci, tirio papa havin<; tin Intornca d&m oter of oiz (0 ) InfoG Of t20h VIVO almU havo a th oh i000 of throo- f oxv, t .61 of ran ino$) Mnholco, cylindrOwl in obapo o haviva to lots l dl=otor of thirty-OLZ (30) An0hoo of hard bu mod aovc0 brloh (tbO MUO of r211ah MMU010cr ohall bo Q IGht (a) Inchoo in tom& lraoaa wrc+tt bavo an avoroGa Wrtlt al holaht of aln and ona-half (d�3 foobis said maholoo to bo provided vIth to cant iron covop vOldAUC not load than fivo hundrad! forty (540) poundo, anti adjuatin tho pr000nt Mendan pavo ►t adjoining cmd oonnvooloa attA tho pro- V000�ti�prouas�n4. M IT ORDA1.IMD BY WE CITY 00tQCIL or ^j&M CITY OF 13VAIT=11: MOTIOU 1* Thnt ca local Irgrovo=ntr abzall bo =do within tho City of Bvanaton, County of Cooly, Mtn of I113noIa, the Mtwra, ob::�,ractor, laaality, decorlption of vhfeh loota1 1MVr0V0M=t to no follova, to-vlt: at the Public Alloy In B.locds aim W , Z8dZ10 and money's Addition to Lv=atono =tondinn from tho Routh lot lino of Mdalo OtrOctt to tho 9wrth lob lino of ioonoy Ctroot. In tho City of oton, County 09 Coon, Strato of 1111noloo bo and the c= la ho=by ordorod ravod as folBazin: The center line of the pavement herein provided to be con - strutted shall coincide with the center line of the alley within which said pavement is included* wISU11 of Pavement The width of the pavement herein provided to be constructed shall be nineteen (19) feet. Grade of Pavement The grade of the upper surface of the finished pavement herein provided to be constructed is hereby established as followDs measured in feet and decimal parts of a foot above tke datum plane of the City of Dranst on p to -wit: 1 ` Transverse Section of Alley Outer Edges of Pavement Center line of Pavement At the north lot line of Keeney St. 12.25 12.00 At a point eighty (80) feet north of the north lot line of Keeney Street 12.75 12.50 At a point two hundred sixty (260) feet north of the north lot line of 10.60 10.35 Keeney Street At a point three hundred seventy-seven (377) feet northof the north lot line 11.25 11.00 of Keeney Street At a point five hundred twenty-seven (527) feet north of the north lot 9.70 9•45 lineof Keeney Street. At a point six hundred twenty-seven (627) feet north of the north lot line 10,30 10.05• of Keeney Street At a point seven hundred thirty-two ( 732 ) feet north of the north lot 9.75 9.50 lin a of Keeney Street At a point twenty feet south of the south lot line of Kedsie Street 11.05 10080 At the south lot line of KedgiLLEY PAVING 10.190 10.65 The grade of the center line and outer edges of the pavement at intermediate points shall be respec- tively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane of the low water mark of Lake Michigan in the year A. D. 1547, as established by the Trustees of Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the northwest corner of Davis street and Sherman Avenue, in said City of Evanston. The upper surface of the pavement herein provided to be constructed, when completed, shall conform to the arc of a circle passing through the respective grade points in the center line and at the outer edges of the pavement, and shall be true and symmetrical. GRADING The alley herein provided to be improved shall be.cleaned prior to the paving thereof, in a thorough manner of all deteriorated planking, blocking or other debris. The soil of the roadway shall then be ex- cavated or filled upon with other suitable soil, as the case may be, to such depth and shape as will bring the upper surface of the finished pavement, when constructed as hereinafter specified, to the elevations and grades hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable self- propelling roller or flooding with water as the case may require. Depressions or holes appearing as the pre- paration of the sub -grade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left i the sub-gr de, shall be removed by the contractor without extra charge. 11,19i98 _ -- 461 CONCRETE PAVEMENT —ALLEY Upon the subgrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement, composed of Portland cement, sand and gravel mixed by volume in ratios of one part of cement, two parts; sand, and three parts of gravel with sufficient clean water to give proper plasticity and in the manner here-i inafter set forth. The concrete shall be spread on the sub -grade in such quantity and to such form that of ' , ter being compacted in place it shall have a uniform thickness of six inches. The Portland cement to be used in making this concrete pavement shall be of such quality that repre- sentative samples collected from shipments made for the job shall be capable of passing the following tests; for fineness, soundness, initial setting, and tensile strength, to -wit: Fineness. The cement shall be ground so that 92 °fo will pass through a standard sieve, having 10,000 meshes and 75ofo will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at, the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and ; shall be immediately thereafter immersed in boiling water for four hours. The pat must show no check- ing, warping or swelling. Broken briquette of the neat cement which have remained in air one day and iriti water six days shall likewise withstand the steaming and boiling specified for the neat pat. Setting. The cement when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) .................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. The sand to be used for making the concrete shall be free from dust, clay, loam, vegetable or other deleterious matter. The grains of sand shall be angular and shall range in size from one -quarter inch down to the finest; but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind - drifted sand shall not be used. The sand shall be of such quality that the mortar composed of one part of the cement hereinbefore specified and three parts of sand, by weight, when made into briquettes, will de- velop a tensile strength at least equal to the strength of a mortar of the same consistency and proportion made with the same cement and Standard Ottawa sand. In no case shall the sand, when used for this concrete, contain frost or lumps of frozen matter. The gravel to be used in making this concrete shall be clean, hard, free from dust, loam, vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable', sizes grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (1-4) inch., In no case shall the gravel when used for this concrete contain frost or lumps of frozen matter. The sand and gravel shall be clean when delivered on the job, and shall be kept clean until used. The method used for measuring the ingredients in the concrete shall be one that will insure a uniform! proportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be- . considered one cubic foot. y The concrete shall be mixed in a batch machine mixer of a type that will insure a uniform distribution of the ingredients throughout the mass. Ingredients of the concrete or mortar shall be mixed to the de- sired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is uniform in color, and homogeneous. Clean water, free from oil, acid, alkali or vegetable matter shall be ad- mitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the gravel from the mortar. The concrete shall be handled rapidly from the mixer to its place in the pavement. Successive batches shall be deposited in place on the sub -grade in a continuous operation so that sections of the pavement be- tween expansion joints, hereinafter specified, shall be entirely completed and without the use of inter- mediate cross forms or bulk -heads. Concrete shall not be retempered or used that has partially hardened. The concrete shall be compacted and brought to the established grade and shaped with a template or straight 'edge, and shall be brought to a comparatively even surface. After the concrete has been so brought to grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even sur- face. Said roller shall not be less than five feet in length, and not less than eight (8) inches not more than twelve (12) inches in diameter and weighing not less than one hundred pounds (100 lbs.). The roller shall be operated across the pavement from side to side of same, by means of ropes attached to each side of.the roller, at such angle with the center line of the pavement as to permit the roller to advance along the pavement two feet for each time across. After the roller has covered a given area in the manner de- scribed, the same area shall be similarly rolled by the roller for not less than three (3) times at intervals of fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may e. necessary to remove excess water. ,rrr1 462 After the rolling has been completed the pavement shall be finished by two (2) applications of a belt made of canvas, not less than six (6) inches wide and not less than two (2) feet longer than the width of the pavement. For the first application, vigorous strokes at least twelve (12) inches long shall be used. The longi- tudinal movement of the belt along the pavement shall be very slight. The second application of the belt shall be immediately after the water glaze or sheen disappears, and the stroke of the belt shall be not more than four (4) inches, and the longitudinal movement shall be a continuous forward movement. A suitable bridge to span the width of the pavement shall be used to finish the joints, no part of which shall be in contact with the finished work. A notched straight edge ten (10) feet in length shall be used for testing each transverse joint, prior to and subsequent to final finishing. The straight edge shall be.placed over the joint, -parallel to the center line of the pavement and moved across from curb to curb. When the surface of the concrete upon testing shows to be high or low, concrete will be added or removed to bring the surface its true shape. The concrete adjoining transverse joints shall be dense in character and after rolling shall be finished with a wood float, which is divided through the center and which will permit finishing on both sides of the filler at the same time. The finished surface of the concrete shall not vary more than one -eighth (1-8) of an inch from a two foot straight edge placed upon the concrete in any position. Workmen shall not walk on the freshly laid concrete; and no one shall be allowed on the concrete after it has been worked into form and position with a template or straight edge, until it has thoroughly hardened. EXPANSION JOINTS Transverse expansion joints not less than three -eighths (318) inch or more than one-half (112) inch in width shall be placed across the pavement at right angle to the center line of the roadway; spaced so as not to exceed thirty-three and one-third (33 113) feet apart. All expansion joints shall extend through the entire thickness of the pavement. In these expansion joints there shall be placed a prepared strip of bi- tuminous filler of the thickness hereinbefore specified for expansion joints and extending from the bottom of the pavement herein specified to the upper surface of the finished pavement. The upper edges of all joints and the upper outer edges of the pavement shall be neatly troweled to a radius of one -quarter (T/q ) inch. All metal, manholes, catch basin covers, and other fixed objects shall be separated from the concrete pavement by a joint filler of the same character as hereinbefore specified for expansion joints; which joint filler shall extend through the entire thickness of the pavement. PROTECTION ammemss As soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be spray- ed with water; and it shall be kept thoroughly vet for at least ten days. As soon as it can be done without damage to the concrete, the surface thereof, during hot and dry weather and if unshaded shall be covered with nbt less than one inch of earth, sawdust, straw or other suitable and available material, which cover- ing shall be kept wet for at least four days after being placed. In dry and hot weather freshly laid con- crete shall be protected by a canvas covering until it can be sprinkled or covered, as specified. The water and concrete aggregates shall be heated if at any time during the progress of the work the temperature is, or from weather reports will likely during the next twenty-four hours drop to (35) thirty- five degrees Fahrenheit. The concrete shall be protected against freezing for at least ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established line, and their upper edges shall conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed from forms that have previously been used. The pavement shall be thoroughly cleaned and open to the public as soon as the cement has set suffici- ently to receive the traffic without injury to the surf ace or body of the concrete. IZ 0198 463 SURFACE DRAINAGE SENVER l: For the purpose of carrying off storm waters from the surface of the pavement herein provided to be con- structed, a surface drainage sewer of vitrified, salt glazed, tile pipe shall be laid as hereinafter specified. Said sewer shall be laid in open trenches in the ground in such manner as to conform to the elevations, lines and, grades hereinafter specified. The pipe used in the construction of said sewer shall be of the type known as "Bel and Spigot" having an in- ternal diameter of nine (9) inches, the metal of which pipe shall have a thickness of thirteen -sixteenths (13116) of an inch and shall be not less than two (2) feet in length, Cylindrical, straight, smooth, thoroughly vitrified, salt glazed, free from cracks or blisters and, of the best quality and workmanship. The joints between the pipes shall be securely sealed with a mortar composed by volume of one (1) part of Portland cement of the best quality and one and, one-half (1/) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The joints between said pipes shall be wiped and pointed inside the pipes. The interior of the pipes shall be kept free from dirt or refuse of every description and shall be left clean at the completion of the work. The open trenches excavated to receive said sewer, shall be made at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least (6) inches clearance on both sides of the pipes for sealing joints. The materials excavated shall be kept compactly along the sides of the trench and shall be backfilled as soon as practicable in order to occasion the least possible inconvenience to the public in use of the street or alley as the case may be. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed, under and around the pipes. C - The open and unconnected ends of said sewer shall each be securely closed with a salt glazed, vitrified tile disc, and sealed in the manner above specified for joints between pipes. Said sewer or sewers as the case may be shall be lai d as follows, to -wit: in and along the center lino of eaxd AUOy from and COMecting with the 8*"r now in place in and along this center line of Keeney Street north a d.ietance of seven hundred filty (750) Feet. Mw internal dianster of this sewer shall be nitre (9) inoheas. At its connection with the af'ore�: oaid sewers, the 01"ation of the inside botttm of t o swat Mall be theme we ninety .bundredthe (3,90) Feet above the dstms plane herein before deflnede and the grade thereof atoll rice tbencs at a uniform rate to an elflvation of sir and s,1&t_tsntbn (6.8) feet above said fttVw-a,t its teaminme CATCH BASINS For the purpose of receiving storm waters from the surface of the pavement herein provided to be con- structed t►W80 (3) catch basins shall be constructed at the necessary points along the center line of said pavement. Said Catch basins sholl be constructed of hard burned sewer brick and placed vertically in the ground in such manner as to bring the tops of the iron covers herein required for said catch basins, when in place, to the upper surface of the proposed pavement. Said catch basins shall be cylindrical in shape having an internal diameter of thirty-six (36) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by means of three (3) header courses of brick, laid endwise and horizontally, -to fit the iron covers hereinafter specified to be furnished and set on the walls of said catch basins. Said catch -basins shall have walls eight (3) inches thick built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch - basins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 112) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch -basins shall each rest on a solid bottom of two (2) inch pine planks, laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure.fifty-four (54) inches in diameter and shall have its upper side placed four(4) feet below the upper surface of the brick wall for said catch -basin. Said catch -basins shall be connected with the sewer, or sewers as -the case may be, now existing, or herein provided to be constructed, as, the case may be, in and along the center line of the said pavement, along which center line and over said sewer or sewers, the respective catch -basins are to be constructed. Said catch -basins shall be connected with the sewer or sewers aforesaid by, means of vitrified, salt glazed tile pipe having an internal diameter of six (6) inches and of the type known as "Bell and Spigot," the metal of which pipes shall be three -fourths (314) of an inch in thickness and shall be not less than two (2) feet in length. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipe shall be se- curely sealed with a mortar of the quality herein required for brick walls in catch -basins. Each catch -basin connection shall start in a six-inch "Y" branch of the quality and laid in the manner required for sewers, which "Y" branch shall be set in the said sewer at a point not less Than eight (8) feet in advance of the center of the catch -basin measured along and in the down stream direction of the sewer. The pipe shall be laid true to line and grade and the connection shall enter the catch -basin through the brick wall thereof at a point two and one-half (2 112) feet above the top of the plank bottom of said catch -basin. The pipe entering the catch -basin through the brick wall thereof, shall be an elbow with the bell end turned downward inside the catch -basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and shall be back -filled as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the alley. The trenches shall be promptly back -filled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch -basins shall each be equipped and fitted with a circular cast iron grate cover weighing not less than three hundred and sixty (360) pounds. Said grate to be so constructed as to freely admit water from the surface of the pavement to the catch -basin) and having a vertical height of nine (9) inches, the opening in said cover shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) inches at the top thereof. The diameter of the lid or grate for said covers shall be 22 314 inches. Said catch -basin covers herein provided to be furnished and set shall rest on the walls of the catch -basins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catch -basins. The walls shall be built to such height as will bring the tops of the covers when set in place, to the upper surface of the pavement at points where said catch -basins are located. Said catch -basins herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: Ooe at o POW two hwfted e1SW (2 0) feet Nowth of the floe& lot Vto* or Money Stl "t e OW at a VOW f " WAMWO& tooatYI*e+ WM {dal) f*O* NOSU of tM JWJrf* lot line or Keener street* one st o point "men htieid %W (no) ties t of the 10t 11124sf 16MY Str"00 MANHOLES Ueeo(3) brick manholes shall be built of hard burned sewer brick, upon the sewer or sewers, as the case may be, hereinbefore provided to be constructed and shall be located at the points hereinafter specified. Said manholes shall be placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbefore specified in such manner as to bring the tops of the iron covers herein required for said manholes when in place to the upper surface of the proposed pavement. Said manholes shall be cylindrical in shape having an internal diameter of thirty- six (36) inches at the upper surface of the base and upward to the lowest header course being uniformly drawn in to twenty-four (24) inches in diameter at the top of the masonry by means of six (6) header courses of brick laid end- wise and horizontally, the diameter being decreased uniformly by each course to fit the iron covers hereinafter specified to be furnished and set on the walls of said manholes. The walls of said manholes shall rest upon the base thereof without offsetting and shall be eight (8) inches thick, built (except as above specified for header courses) of alter- nate vertical and horizontal courses of brick. The brick used in the construction of said manholes shall be thoroughly wetted with water before being placed and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1;/) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manholes shall begin at a point five (5) inches below the outside bottom of the sewer hereinbefore specified and shall extend upward to said outside bottom and along the sides of said sewer to a point midway between the top and bottom of said sewer, said base to be circular in form, the diameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manholes shall be neatly removed leaving the lower half thereof to form the invert of the manhole. Said manholes shall each be equipped with a circular castiron cover having a tight lid, weighing not less than five hundred and forty (540) pounds, of the type known as "Chicago City Standard Heavy" having an extreme height of nine (9) inches and having an internal diameter of twenty-four (24) inches at the base and twenty-two (22) and three- ] fourths (Y4) inches at the top thereof. Said manhole covers herein specified to be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the tops of the walls of said manholes, which walls shall be built to such height as will bring the tops of the covers when set in place, to the surface of the pavement N hereinbefore specified. Said manholes herein provided to be constructed, referring to the vertical axis thereof, shall be _located as follows: 010 44 a --- te, Wakired emr* taw) toot S1L'O et aw "W% LIM et ". + at w V"" t � V (me) to"VC 'MW m- -- � 4641.i. A STMENT OF FREE _ AMT PA VI G � z. The present macadam paving where the same adjoins the proposed improvement shall be adjusted i- .d such manner that after having been excavated or filled upon, as the case may be, with materials of kind and quality composing said macadam paving and, having been thoroughly compacted it shall form a base or founda tion for a bituminous macadam pavement to be placed thereon. The upper surface of said base,. or foundatio -,when completed shall be two (2) inches below the finished grade of the proposed improvement where Sam adjoins said macadam paving. Upon the base or foundation, prepared as hereinbefore specified, there shall be spread, a layer of clean, hard broken limestone ranging in size from a maximum dimension of two inches to a minimum dimens'io _ of three -fourths inch. This layer of limestone shall he evenly spread, and in sufficient quantity to insure thickness of two (2) inches thereof being spread, on and used in each and every square yard of the roadway. As soon as practicable after the laver of limestone is spread on the foundation, it shall he given an initial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end a soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be applie to the limestone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic ce= . ment in such quantities as to insure not less than one gallon thereof being evenly spread on and used, in each-, and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the sur- face to which the same shall have been applied shall be uniformly covered with dry and hard limestone screen- ings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size ranging from the largest particle that would, pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diameter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screenings the paving So covered, shall be given a thorough rolling with a roller of the weight and type hereinbefore named. This roll- ing shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to `vhichl same is applied. The surface of the paving shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be applied to the surface a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be' sufficient in quantity and so applied and spread, as to insure not less than three-quarters (/) gallon thereof' being evenly spread and used on each and every square vard of paving. Immediately after the second, appli=, cation of asphaltic cement is made and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three - fourths inch to a minimum dimension of one -eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard. thereof being evenly spread and used on each and every square yard of paving. A final rolling of the paving shall closely follow the spreading thereon of these granite chips. The final rolling shall be done lvith a roller of the weight and type hereinbefore named. The final rolling shall continue, until the surface of the pavement is thoroughly compacted, and brought to a surface, free from depressions and, true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the. pavement shall be filled, as the rolling continues, with the same respective kind of stone as -that on which the, roller is operating. The asphaltic cement used in the improvement herein provided, to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following require- ments and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural asphalt and a flux to be tested with and proven the hest suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully] in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and, be so prepared for use as to best adapt it to the climatic and traffic conditions of the roadway on which it is' to be used. (2). Its specific gravity shall, be greater than 980 at 77 degrees Fahrenheit. (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 grains for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be present, in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 957o. (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98%7jo shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in petroleum naptha, at the air temperature to the ex- tent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. MISCELLANE6tt SPt, I`FI`CATpONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be har d burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall knot .contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. jSaid sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ty that representative samples selected from shipment shall be capable of passing the following tests for ineness, soundness, initial setting and tensile strength to -wit. Fineness. The cement shall be so ground that 92 % will pass through a standard sieve, having 10,000 hes and 75% will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, 'warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take nitial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days 'in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) .................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at such time and place as will enable required tests to be made. f All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The tile ,pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that iwould be imposed upon at from within or without. Said 1pipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. %ZO198 All the material used in the construction of the impnovement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of SiX Hundred eleven and 20/100 ........,............ ... ... dollars ($ 611.20 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Lnprovements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of Six Hundred eleven and 20/100 . ..... ... .. . . . . . . . . . . . . . . . . . . . . . . ... • .. . . . . . .. . . . . . . . dollars ($ 611.20 ) r shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into five (5 )installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section .. And for the purpose of anticipating the collection of the second and subsequent installments of + said assessment for said improvement, bonds sliall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special I assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. 1 Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. + ;� by►pr S.sts Co"Ci of ".,�O th9 Cites of E� :tst 04 'l1__clay of--- - --- - --A. P. !l.�i�i paved&__/__l�� _ �/•�i!�(,!1?iYl . City Clerk Mayer. Recommendation, Estimate and Ordinance. RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled We herewith submit an ordinance providing that E w � dlawtwo algae s, oast Arm later Isku t —1W M t er Fire ks"s to to oo------- !0 Mtn Water >Iw►luR lwro" grovided $0 be Uldo bar maw of o. t SIMI 34VOG am titt'sum of ter 4muty bwelaetwe oft od* saw4UU be ". o." pxttoa, Or soma S a gad D to airs oast t►se» bod •brefte juaft", a►�q�t ialo . of i'lro t� fit, wo oar a► liaeo s aMso A1►wMo rto4W ATOM* Ines" OMW of smasuft as bros"t 116 � taewr#tsd nth ass lo�griatal� ot+� arasl�r +� fro j tit � be"a"*%"# si►t t�q e"s of wo of as allw* W d dk&U hwo of er Mawr taco t"t oe � . �► ooirdawrlr 00*10 opts rro 60 60tAod via s 0sot newt ooI" co Ml+d �neirt►r oirll. bO Of VW sow lattollts. W SgW4 ft atd trwatalmt+rblg to VW >•oosu AW vaueo M ti1+r #ice Me atsarofr►l�d4 !laid am* irwa rs~v► boon flags Ito oft d j !tot r +wd tiro { a ) Loeb" In late"01 diaarte r • ad sb&U be s t oMM patte" or oqua IN vallty a d �i�s to aw ew1Jug%*. =W k oRot� '�IMIoyM 1Ngts � �1 sfo #� roi��t �t towsw Mt dA&U Ve to" tea 4 rs"d MAO to bets" of 06006*00 Us disartor or Wo ooat rift ad* vaus of t MAU 1e : ,44 low U" lour 1'4) 186h o. lfaf 4 of t1M &UwA 0--o. Or 1e8"010 *%U to NO low Woo a Mi "We'so orrtlto t f 4 f i#aUoo , o" Daft IV"o olsl !'halal t� of x""4400 Coasts Of Cosh,, State of lubiolet ft" a" omm s6 t �ritlt "Is W&lk*V W" am In VUGO la fait Qoltax otweet to go t lot Of DIARY RAZZMAS h= to;ootdlir with ai ootllaA►to of J:06 fort of sold U*rw reas t &" AFOGOW sl d tis of id ordl• #mat gad the flat of Us A I ,-rwMNtt soatw'►�tsah colt* goo/�ootlb►]►3,�r oapaddtod, sosld of X.00al iaparos►-Wwww •t the Clad' of 2`94"t s r 111laole s ftt a 19vM41eor tlZlu+sio /o,� �3 9 IZA9198 ~ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled The Board of Local Improvements of the City of Evanston having adopted a resolution that a oix-inch internal diataetor,' Clans Bm oast iron cater rain t000th.er with necessary Tiro hydrant to be connected, In tho boot voilcmnllko manor, with tho water main,, horoin provided to bo laid, by m=no of oft -inch cast , Iron ptpeo and fittinea of the quality hareinboforo apocified s (oaid hydrant ahnll be of the ca= pattern, or equal in quality +and vorkr.-.1nobip to, the coot iron body, bronco mounted, 3,•ubbor ftacod Cato typo of fire bydranto in use on Lake Street botmon Dodae Avenue, and ,liartray .Avenue in cai.d City of zvo atona said hydrant to be provided with one four-inoh oteamr noanle and two (2) , two and one-half () inch hone nozzloo, mtohing threads of the YIro Depart• mont of said City, and o3all hravo, at or now the foot of said by. Brant, a aeaondary double Cgtc yalva oquippod with a east iron valve box. Said oceondary valve shall �)o of the oem pattern; or equal in quality and aorkmanshlp 'to the secondary volveo on the 'oatiotIM giro hydrtanto eforouaid e Said snot iron valve box ob all be, ,six (6) foot In lon th and five (0) inohoo In' internal diameter, and shall be, of the carts pattern or equal, in quality and norkmanohi.p to, the ad juat- able east iron vtalvo boxon nov In uoo on tho oxioting fire bydranto a+forewsid. The longth of the hgdreant heroin provided to 'ba furnished and act ob all bo six (6) foot from ground lime to bottom . of connect. ing pipe.. ',the diamter of the seat ring or amain valve opening of onid hydrant oball bo not loon than four (4) Inchon. The 1noidie dieter. of thact=d pipe# or hyd%mnt b,arrol, rill be, not leca than five and throo-foixrt'ho (3 3j4) inohoo) a ami. eaot iron special f'ittind;o of the quality opeoifted for vater minor be laid .in COLPAX C"IX-Va' in the City of'"vanston, County of Cook, Gtato of Illinois, from and con- necti,na with the vator main nov In place. in said 'Colfax- Gtrcat to tho oast lot line o. rACT RAIMOAD AV.:.T0; and proocnted to the Cltg* Uoun- oil of the City of Lvans ton a recomwndation that ouch improvement bo suede. I hormith submit an- ootimwato of tho cost of ouch improvement as described in said r000lution, including labor, »tcrfal and lawful , or<penaoo attondin the prooeedinao for miring said improvo=nt and the i coot of makinC and aollooting the aoses ammt, .aa provided by l.avo via.: rGTIMP. oar? COST 400 lin. ft. of als-inch internal diameter:• Clang' D cast iron cater main (avarugo depth of cut slit (6) foot) laid complete In place including tronohinis back- fillinC and ro=val of ourplua• excavation G 0245 ' ... per lln. ft...................................... yle©60000 1 fire hydrant includinClaccoocary connoctiono to cater mine Cato valve and swat Iron va.lvo • bono also including oncavation ana bachfil.linC, com- plate In place C 150*00 • 3000 30 Mao of special fittinCo %, 10,d par lb. !. • .. • • • : • • • • • ror lawful oxpon000 attondina tho prococdin�;o for n::�hin the Said irprov==t and the coat. of mkinC and collecting apaccolnont therefore not to oxcoed six (6) par centum of the above, to -wit: li1e213o40...l•............•.•.......a 72.'7fl Total.......... ev,1$205.78 And I hereby certify that in nW opinion the above estimate does not exceed the probable coat of the above proposed improvement and the lawful expeneca attending the same. Dated, Evanston. Illinoio. engineer of the Board of Local Im• provements of the City of Evanston. 470 An Ordinipnce. Providing tit a at%-inoh internal diamter, C],aao D. coot iron vatcr cocain together with noocaaary fire hydrant to be connected, in the boot workmnliho mw mer, with tho rater min# hproln provided to bo laid by moans of oin-inch east iron piper and fittinao of the quality here.. Inbeforo specified. (wid hydrant shall bo of •the .carm patterns or oowl in quality sand vorlwanohip to, the cant Iron bony* bronco mounted rubber faced gate type of fire hydrants in une on IWto Utroot between Dodgo bvonuo and Harrtrray Avonuo in caid City of Dmoton, said Wrant to bo , provided with one four -inch otoa=r nonalo ' and. tvo (2) tvo ansi ono -half (l f) inch hose nozzloa# mtchiM threado of tho I?Iso Depart- tint of said Citys and ahrall have, at or near tho foot of cold hydrant* a mecoiAary doubly jpte valve equipped with a cant Iron valve best. oald acoondary valve., shall bo of the =a pattern, or equal in duality, and vorkmaohip to tho aocaondtary valved on the wdatina fire hydrate oforonaid. Uaid cast iron valve box chall be six (6) foot in length and five (6) incxhau in intornal dlawtors and till be of the yam pattern or c2ural In quality and rrorlmanahip to, tho adjuatablo cant iron valve boaaa nov in use on the oxi©tina fire hydrento aforesaid. The liar h of tho hydrant herein provided to ba f�srniahed Land oet nlinil be six (6) feet from around line to bottom of conncetiM pipe. The diamotor of the seat ri or main valvo opening of id hydrant ohall be not lano than four (41 sa Inches. Tho inside diameter of the atand pipe, or hydrant barrel,, shall be not lean than five and threo«fourtho (5 8/4) Inchon). and cant iron opcoial fittingo of tho quality opoole. fled for uator m1noo be laid in (;GLVAX. G-*M::;T in tho City of rwamaton. County of Cooks atato of lilinolas from and connaotina %71th the aster resin norr in place in said COMS MUM to the oast lot lino of I.lfLGT M IT CMNI= BY TM CITY CCOMIL O TM CITY Op EVAMT017: %Ci'IM 1+ That a local improvement oball bo m e nithin the City of :vanston, County of Cooke Stzte of Illinois, the nature. ,characters locality and doaaription of which local iMrovc=nt io no folloass to-crit: A six (6) inch lntcrml dimiator, coot iron vrtcr min toacthor with noeeosary fire hydrant, valvo and valvo chamber cbn1l be laid in C© IX OM 7T fron and connecting with tho rater min now in place in mid Colfax utreA to tho mat lot lino of Li iTd rIAIU1 1M tVa`.I�il.. ALIGN= The cant iron water main herein provided to be laid in Colfax Street shall follow a line eight (8) feet north of and parallel with the center line of Colfax Street. This cast iron water main shall connect with the cant iron crater main now in place in Colfax Street. SIZES The inside diameter of the cast iron crater main herein pro- vided to be laid in Colfax Street shall be six (6) inches. The grade or elevation of the top of the cast iron crater main herein provided to be laid$ when complete in place# is hereby estab- lished as follows, measured 'in fact and decimal parts of a foot above the datum plane of said City -of Evanston, to -wit: Cast iron crater main in Colfax Street: At its connection with the cast iron water main now in place in Colfax Street. 14.00 At the cast lot line of E. Railroad Avenue. 13.50 410198 4`0 _The grade of the top of the main at intermediate point'li shall be respectively proportional to the foregoing. DATUM PLANE The datum plane hereinbefore mentioned is the plane of low water mark of Lake Michigan in the year A. D. 1847 as established by the Trustees of Illinois and Michigan Canal, and is 22.41 feet below the U. S. Geo- logical Survey Bench Mark on the north side of the Sherman Avenue entrance to building known as City Hall, located at the north-west corner of Davis Street and Sherman Avenue, in said City of Evanston. EXCAVATION AND BACK FILLING The ground shall be excavated in open trenches. The trenches shall be at least eighteen inches wider than the exterior diameter of the pipes so as to give at least nine inches clearance on both sides of the pipes for caulking the joints and setting special fittings. Excavations shall be made under the bell of each pipe so that: the entire length of the pipe shall rest upon the bottom of the trench and be at the grade hereinbefore specified. The materials excavated shall be kept compact so as to occasion the least possible inconvenience to the public use ' of the street. The trenches shall be promptly back -filled to a depth of twelve inches above the top of the pipes. Sand or other suitable earth shall be carefully packed under and around the pipes. In no case from the commencement to the termination of the work, shall more than five hundred feet of trench be opened in ad- vance of the completed back -filling. Any and all pavements or crosswalks disturbed in the performance of the work shall be restored to a condition as safe and serviceable as before being disturbed. Free access shall be left to all fire hydrants and water gates. Provision shall be made for the flow of sewers, drains, or water courses disturbed during the prog- ress of the work. PIPES The pipes used in constructing the water main herein provided to be laid shall be coated bell and spigot, made in twelve -foot lengths, straight, cylindrical, smooth, free from cracks, sand holes and other imperfections of castings. The metal shall be of the best quality of cast iron used for the purpose and shall be uniform in thick- ness. The dimensions, thickness of metal and weight of the pipes and special fittings hereinafter specified shall be sufficient to insure the pipes and joints being capable of securely withstanding an internal hydraulic pressure of one hundred and fifty pounds per square inch. The spigots shall be concentrically placed inside the bells. All joints between the pipes, and fittings used in connection with the improvement herein provided to be made shall be closely fitted and thoroughly caulked. Said caulking shall consist of the best quality, for the purpose, of untarrea rope yarn and soft caulking lead. Sufficient yarn shall be used to leave a depth of not less than two and one -quarter inches for lead in the bell after the yarn has been, as it shall be, well packed. After the yarn has been packed, as specified, molten lead shall be promptly poured into the remaining bell space in sufficient quantity to stand flush with the outside of the bell after the lead has been, as it shall be, thoroughly compacted with caulking hammer and tools. Before pouring the lead the joints shall be carefully wiped out to make them clean and dry. The lead space shall be run full at one pouring. FIRE HYDRANT. A fire hydrant shall be furnished and set at the point hereinafter specified and shall be connected, in the bast workmanlike manner, with the water main, herein provided to be laid, by means of six-inch cast iron pipes and fittings of the quality hereinbefore specified. Said hydrant shall be of the same pattern, or equal in quality and workmanship to, the cast iron body, bronze mounted, rubber faced gate type of fire hydrants in use on Lake Street between Dodge Avenue and Hartray Avenue in said City of Evanston. Said hydrant herein provided to be furnished and set shall open by turning to the left, and shall be provided with one four-ineb steamer nozzle and two, two and one-half inch hose nozzles, matching threads of the Fire Department of said City, and shall have, at or near the foot of said hydrant, a secondary double gate valve equipped with a cast iron valve, box. Said secondary valve shall be of the same pattern, or equal in quality and workma sbi to the secondary valves on the existing fire hydrants aforesaid. Said cast iron valve box shall be 4.406 .R feet in length and five inches in internal diameter, and shall .be of the same pattern, or equal in quality and workmanship to, the adjustable cast iron valve boxes now in use on the existing fire hydrants aforesaid. The length of the hydrant herein provided to be furnished and set shall be§1JX"W&-.Wlf-feet from ground line to bottom of connecting pipe. The diameter of the seat ring or main valve opening of said hydrant shall be not less than four inches. The inside diameter of the stand pipe, or hydrant barrel, shall be not less than five and three -fourths inches. The hydrant herein provided to be furnished and set shall be placed at the following point, to -wit: On a line sixteen (16) feet north of the center line of Colfax Street: At a point five (5) feet east of the east lot line of East Railroad Avenue. _ SPECIAL FITTINGS The water main herein provided to be laid shall be equipped with cast iron special fittings of the quality hereinbefore specified; the location, size of inside diameter in inches, and class of which fittings shall be as below specified. The unconnected or open ends of all pipes and special fittings required on the improvement herein pro- vided to be made shall be closed with cast iron plugs of the quality hereinbefore specified. Any and all crosses or tees required on said improvement shall have bell ends. Location of Special Fittings. Size. Class. At the east Line of lust Railroad Avenue. 6" Dluff 4'7 2 All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of ewenty-two and Oeventy-eieht bUndrpdtbn dollars ($ 72:78 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of seventy-two and seventy-eight hundredtba dollars ($ 72.78 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into lie, installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section i. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform toy the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Cty Co►..1ZcTl o` c1iR (`;t c' J v ee d&. Jz=_ - --- - -- - - - City Mayor. . -.at9i98 RECOMMENDATION, ESTIMATE AND ORDINANCE 473 RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS. ' TO the Mayor and Aldermen of the City of Evanston in the y Council Assembled: We herewith submit an ordinance providing that the roadway of COLFAX STREET from the west lot line of ASHLAND AVENUE to the east lot line of EAST RAILROAD AVENUE in the City of Evanston, County of Cook, State of Illinois, be improved by grading, curbing with a Portland cement concrete curb having an average horizontal width of seven (7) inches and a vertical height of twenty-four (24) inches, paving with a bituminous macadam pavement three (3) inches in thickness laid on a Portland cement concrete base or foundation five (5) inches in thickness, constructing necessary surface drainage sewer of vitrified, salt glazed, tile pipe having an internal diameter of twelve (12) inches (the walls of which pipe shall have a thickness of one(1) inch), a reinforced Portland cement concrete bulkhead sixty- eight (68) feet in length encasing a line of vitrified, salt glazed, tile pipe, of the kind and quality required for surface drainage sewer in such manner that the longitudinal axis of said pipe shall be one (1) foot from and parallel with the outer faces of the walls of said bulkhead, a special manhole, culin- drical in shape having an average internal diameter of three (3) feet, of hard burned sewer brick, ( the walls of which manhole Shall rest upon the base aforesaid bulkhead and have a thickness Of twelve (12) inches and a vertical height of sixteen (16) feet said manhole to be provided with a cast iron cover weighing not in than five hundred forty (540) pounds, manholes, c lied i al shape having an internal diameter of thirty-six (36� ind e�, of hard burned sewer brick (the walls of which manholes shall be eight (8) inches in thickness and have an average vertical height .of six and -one-half (6*) feet, said manholes to be provided with cast iron covers weighing not less than five hundred forty (540) pounds, catch basins, cylindrical in shape having an internal diameter of forty-two (42) inches, of hard burned sewer brick, (the walls of which catch basins shall be eight (8) inches in thickness and have a vertical height of five and one-half (5*) feet), said catch basins to be provided with cast iron covers weighing not -less than .three hundred thirty (330) pounds and a circular plank bottom two (2) inches in thickness, said catch basins to be connected with the surface drainage sewer by menas of vitrified, salt lazed, tile pipe having an internal diameter of nine (9) inches Tthe walls of which pipe shall have a thick- ness of thirteen -sixteenths (13/16 of an inch); together with an estimate of the cost of said improvement and recommend the passage of said ordinance and the making of `the improvement contemplated therein. r Respectfully submitted,_ H.P. Pearsons, Wm. Blanchard, Hal W. Smith, Board of Local Improvements of the City of Evanston, Illinois Dated, Evanston, Illinois, July 10, 19239 474 ESTIMATE OF ENGINEER OF BOARD OF LOCAL INPROVE16ENTS To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that the roadway of COLFAX STREET from the west lot line of ASHLAND AVENUE to the east lot line of EAST RAILROAD AVENUE in the City of Evanston, County of Cook, State of Illinois, be improved by grading, curbing with a Portland cement concrete curb having an average horizontal width of seven (7) inches and a vertical height of twenty-four (24) inches, paving with a bituminous macadam pavement three (3) inches in,thickness laid on a Portland cement concrete base or foundation five (5) inches in thickness, constructing necessary surface drainage sewer of vitrified, salt glazed, tile pipe having an internal diameter of twelve (12) inches (the walls of which pipe shall have a thickness of one (1) inch), a reinforced Portland cement bulkhead sixty-eight (68) feet in length encasing a line of vitrified, salt glazed, tile pipe, of the kind and quality required for surface drainage sewer in such manner that the longitudinal axis of said pipe shall be one (1) foot from and parallel with the outer faces of the walls of said bulkhead, a special manhole, cylindrical in shape having an average internal diameter of three (3) feet, of hard burned sewer brick, (the walls of which manhole shall rest upon the base of aforesaid bulkhead and have a thickness of twelve (12 ) inches and a vertical height of sixteen (16) feet) said manhole to be provided with a cast iron cover weighing not less than five hujdred forty (540) pounds, manholes, cylindrical in shape having an internal diameter of thirty-six (36) inches, of hard burned sewer brick (the walls of which manholes shall be eight (8) inches in hickness and have an average vertical height of six and one-half (6*) feet), said manholes to be provided with cast iron covers weighing not less than five hundred forty (540) pounds, catch basins, cylindrical in shape having an internal diameter of forty-two (42) inches, of hard burned sewer brick, (the walls of which catch basins shall be eight (8 ) inches in thickness and have a vertical height of five and one-half OW feet), said catch basins to be provided with cast iron covers weighing not less than three hundred thirty (330) pounds and a circular plank bottom two (2) inches in thickness, said catch basins to be connected with the surface drainage sewer by means of a vitrified, salt glazed, tile pipe having an internal diameter of nine (9) inches (the walls of which pipe shall have a thickness of thirteen -sixteenths (13/16) of an inch); and presented to the City Council of the City of Evanston a recommendation that such improve- ment be made, I herewith submit an estimate of the cost of said improvement as described in said resolution, including labor, material and lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the assessment as provided by law, viz: ESTIMATE OF COST 392 Cu. yds. of grading 6 $1.80 per cue yd. e . . 0 705*60 675'Lin. ft., of Portland cement concrete curb laid complete in place ® $1.30 per line ft. . . . 825 Sq. Yds. of 1ituminous macadam pavement three(3) inches in thickness laid on a Portland cement concrete base -or foundation five (5) inches in thickness complete in place ® §3e60 per sq. yde 800 Lin. ft. of 12 inch internal diameter, vitrified salt glazed, tile pipe surface drainage sewer (average depth of cut seven and one-half (7fl feet laid complete in place, including trenching, backfilling and removal of surplus excavation @ V2.75 per line ft. . . . . e . . . 68 Lin. ft. of reinforced Portland cement concrete bulkhead at outfall of sewer (average depth of cut ten (10) feetA including trenching, backfilling, and removal of surplus excavation, complete in place ® §15.00 per line ft* . . . . . e . . 1 Special brick manhole to be constructed in con- nection with bulkhead and equipped with a cast iron cover, complete in place including excava- tion, b ackfilling and removal of surplus excavation ® §150.00 e e a e e e . 3 brick manholes including cast iron covers, exca- vation, backfilling and removal of surplus exca- vation, complete in place ® §90.00 each . 877e50 2,970.00 2,200.00 1,020.00 150.00 270 a 00 1Zt9198 4 brick catch basins, including cast iron covers, plank bottoms, nine -inch internal diameter, vitrified, salt galzed, tile pipe catch b asin connections to surface drainage sewer, excava- tion backfilling and removal of surplus excava- tion complete in place ® 490.00 each . . . .$ For lawful expenses attending the proceedings for making said improvement and the cost of making and.collectin the assessment therefor, not to exceed six (61 per centum of the above, to -wit: V8, 553.10 . . . . . . . . . . . . . Total . 475 360.00 513.18 § 9s066.28 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improvement and the lawful expenses attending the same. Wm. Blanchard, Engineer of the Board of Local Im- provements of the City of Evan stop. Dated, Evanston, Illinois. July 10, 1923. AN ORDINANCE providing that the roadway of COLFAX STREET from the west lot line of ASHLAND AVENUE to the east lot line of EAST RAILROAD AVENUE in the City of Evanston, County of Cook, State of Illinois, be improved be gr4ding, curbing with a Portland cement concrete curb having an average horizontal width of seven (7) inches and a vertical height of twenty-four (24) inches, paving with a bituminous macadam pavement three (3) inches in thickness laid on a Portland cement concrete base or foundation five (5) inches in thickness, constructing necessary surface drainage sewer of vitrified, salt glazed, tile pipe having an internal diameter of twelve (12) inches (the walls of which pipe shall have a thickness of one (1) inch), a reinforced Portland cement concrete bulkhead sixty-eight (68) feet in length encasing a line of vitrified, salt - glazed, tile pipe, of the kind and quality required for surface drainage sewer in such manner that the longitudinal axis of said pipe shall be one (1) foot from and parallel with the outer faces of the walls of said bulkhead, a special manhole, cylindrical in shape having an average internal diameter of three (3) feet, of hard burned sewer brick, (the walls of which manhole shall rest upon the base9 foresaid bulkhead and have a thickness of twelve (12) inches and a vertical height of sixteen (16) feet) said manhole to be pro- vided with a cast iron cover weighing not less than five hundred forty (540) pounds, manholes, cylindrical in shape having an internal diameter of thirty-six (36) inches, of hard burned sewer brick (the walls of which manholes shall be eight (8) inches in thickness and have an average vertical height of six and one-half (62) feet)., said manholes to be provided with cast iron covers weighing not less than five hundred forty(540) pounds, catch o asins, cylindrical in shape having an internal diameter of forty-two (424 inches, of hardburned sewer brick, ( the walls of which catch b asins shall be eight (8 ) inches in thickness and have a vertical height of five and one-half (5*) feet, said catch basins to be provided with cast iron covers weighing not less than three hundred thirty (330) pounds and a circular plank bottom two (2) inches in thickness, said catch basins to be connected with the surface drainage sewer by means of vitrified, salt glazed, tile pipe having an internal diameter of nine (9) inches (the iralls of which pipe shall have a thickness of thirteen -sixteenths (13/16) of an inch). HE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: 476 Section 1. That a local improvement shall be made within the City of Evanston, County of Cook, State of Illinois, the nature, character, locality and description of which local improvement is as follows, to -wit: That the. roadway of COLFAX STREET from the west lot line of ASHLAND AVENUE to the east lot lirie of EAST RAILROAD AVENUE in the City of Evanston, County of Cook, State of Illinois be and the same is hereby ordered improved as follows: LOCATION. OF. ROADWAYS. The center line of the roadways herein provided to be Paved shall coincide with the center line of the respective streets and alleys within which said roadways are included. WIDTH OF ROADWAYS The width of the.roadways herein provided to be paved shall b e a sfollows, measured in feet fron back to back of the curb, here inaf ter specified and at right angles to the center line of the respective street or alley, as the case may be, to -wit: Colfax Street: At the west lot line of ?Ashland Avenue 24 feet At the east lot line of East Railroad Avenue 24 feet The width of roadway at intermediate points shall be respectively proportional to the foregoing. GRADE OF ROADWAY AND CURB The grade of the roadways herein provided to be paved, when finished, and the grade of the top of the curb hereinafter specified, when completed and set in place, are hereby established as follows, measured in feet and decimal parts of a foot above the datum plane of the City of Evanston, to -wit: Crown Gutter Top of Transverse Section of Roadway Line Line Curb Colfax Street: At the west lot line of Ashland Av. 19.70 19.25 19.50 Ai a point one hundred twenty-five (125) feet west of the west lot line of Ashland Avenue. 19010 18060 19.40 At the east lot line of East Railroad Avenue 19.20 18.70 19.40 The grade of the crown line, gutter line and top of curb at intermediate points shall be respectively proportional to •the foregoing. The datum plane hereinafter mentioned is the plane of low water marls of Lake Michigan in the year A. D., 1847, as established by the Trustees of the Illinois and Michigan Canal and is 22.41 feet below the U. S. Geological Survey Bench Mark on the north side of the Sherman Avenue entrance to the building known as City Hall, located at the north-west corner of Davis Street and Sherman Avenue, in said City of Evanston. The crown line hereinbefore mentioned shall be identical with the center line of the respective road- ways when completed. The gutter line hereinbefore mentioned shall be identical with the line where the surface of the road- ways when completed touches the face of the curbing on both sides of the respective roadways. The surface of the roadways herein provided to be paved when completed shall conform to the arc of a circle passing through the respective crown and gutter lines, and shall be true and symmetrical. GRADING Prior to laying down the pavement thereon, the roadways specified to be paved shall be cleaned in a thorough and workmanlike manner of all debris and rubbish, such as deteriorated pavements, crossings, box drains, culverts, stumps, etc. The sub -grade shall be prepared by excavating the soil, or filling thereupon with other and suitable soil to such depths and shapes as will insure the finished pavement being at the grade established therefor. Spongy earth that is unfit to be left in the sub -grade shall be removed by the con- tractor without extra charge. The sub -grade shall be rolled with a suitable self-propelling roller or flooded with water, or both as may be found necessary and practicable to thoroughly compact same. Any depressions that may appear as the rolling or flooding of the sub -grade progresses shall be filled upon at the surface with suitable soil and thoroughly com- pacted as before specified. IZ19198 , CONCRETE CURB 477 A concrete curb shall be constructed on both sides of the respective roadways herein provided to be paved. Said curb shall consist of a mixture, by volume, of one part of Portland cement, two parts of sand pLnd four parts of crushed gravel or stone. Except that the top and exposed roadway face of the curb shall be surfaced to a depth of one-half inch with a mortar composed of two parts of Portland cement and three parts of clean, sharp sand of the sizes and quality hereinafter specified for the sand to be used in making this curb. The crushed gravel or stone specified for the body of the curb shall be clean, hard, free from dust, loam, vegetable or other deleterious matter, and shall show sharp.edged cubical fracturing. This crushed gravel or stone shall be of variable sizes, grading from a maximum dimension of one inch down to a minimum of one-fourth inch, and so proportioned that the particles capable of passing through a screen of three -fourths inch mesh will fill the voids in the particles retained on such size screen, but without more than ten per cent excess of the smaller particles. The sand specified for the curb shall be free from clay, loam, vegetable or other deleterious matter. The grain shall be angular, and shall range in size from one -quarter inch down to the finest, but not more than 3 per cent shall pass through a seive having (100) one hundred meshes per lineal inch. The sand shall be of such quality that mortar composed of one part of the cement hereinbefore specified and three parts of the sand, by weight, when made into briquetts, will develop a tensile strength at least equal to the strength of a mortar of the same consistency and proportions made with the same cement and Standard Ottawa sand. The Portland cement specified for the curb shall be of such quality that representative samples collected form the shipments made for the job shall be capable of passing the tests for fineness, soundness, initial setting, and tensile strength hereinafter set forth for Portland cement. The sand and crushed gravel or stone shall be clean when delivered on the job and shall be kept clean until used. In no case shall the sand and crushed gravel or stone when used, contain frost or lumps of froz- en matter. Forms shall be used in constructing the curb. The forms shall be sound, free from warp, and of suffici- ent strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established lines and grades. Wooden forms shall be thoroughly wetted and metal forms shall be oiled be- fore concrete is deposited against them. All mortar and dirt shall be removed from forms that have pre- viously been used. The ingredients specified for the body of the curb shall be mixed in a batch machine mixer of a type that will insure a uniform mixture and product. Clean water, free from oil, acid, alkali, or vegetable matter shall be admitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush to the surface under light tamping, but which can be handled without causing a separation of the crushed gravel or stone from the mortar. Provided, that on such portions of the work as it may be imprac- ticable to use the machine mixer, thorough and efficient hand mixing will be allowed. The equipment used, if any, for hand mixing shall be as specified for mixing the surfacing mortar. The ingredients specified for the mortar to be used in surfacing the top and exposed roadway face of the curb shall be mixed on a movable, tight iron platform, of ample size to accommodate the manipulations specified, without getting the ingredients off the platform or mixed with dirt. The Portland cement and sand specified for surfacing portions of the curb shall be thoroughly mixed on the platform with hoes or shovels, and until the color becomes uniform, after which sufficient water, of the quality hereinbefore required, shall be gently added, while the mixing continues, to produce a stiff and homogeneous mortar. The concrete and the finishing mortar after being prepared as specified shall be promptly deposited and compacted in the forms, in layers not exceeding six inches in depth. The back of the curb shall be worked with a spade to secure a well filled surface. The front upper edge of the curb shall be rounded to a radius of one and one-half inches in such manner that the planes of the top and roadway face of the curb will be tan- gent to the curve described by said radius. As soon as the cement has sufficiently set, the forms shall be re- moved from the face of the curb; and the face mortar shall be promptly troweled down hard and smooth, drawing the cement from the crushed gravel or stone as little as possible. The gloss shall be removed with a wet brush. The curb shall be constructed in sections not less than four feet nor more than six feet in length. In con- structing the curb, all templates used to form the sections shall be kept perpendicular to the top of the curb. All joints shall be neatly tool finished. The joint marking shall correspond to the joint made by the tem- plates. The curb shall be twenty-four inches in depth, and the thickness shall vary uniformly from six inches at the top to eight inches at the bottom of the curb. The curb shall be built in such manner that the road- way face will be vertical; that the t op will be at the grade hereinbefore established; and that the back of the curb, at the top thereof shall be on the lines hereinbefore established. The curb at intersecting streets and alleys shall be constructed to true curves tangent to the intersecting curb lines proper. The radius of the curve to which the back of the curb shall conform shall be ten feet for intersecting street and six feet for intersecting alley curb lines. Except as above specified, for intersecting street and alley curb lines, the curb shall be constructed paralleled to the center line of the respective road- ways herein provided to be paved. The curb shall be constructed at such distances from the center line of the roadways, herein provided to be paved, as will give the respective width of roadways hereinbefore speci- fied and established, when measured from back to back of curb in the manner and on the lines herembefore set forth. IvA _/ S -- PORTLAND CEMENT CONCRETE FOUNDATION Upon the sub -grade prepared as hereinbefore specified, shall be constructed a Portland cement concrete base or foundation, five (5) inches thick. The concrete shall be composed by volume, of one (1) part of Portland cement; three (3) parts of clean, hard grained, and sharp sand; and five (5) parts of clean, hard jimestone•o,r gravel broken or graded so as to yield a range of sizes (in longest dimension) from two (2) cinches down to one-half (1-2) inch, and so proportioned as to produce a maximum number and minimum volume of interstices in the aggregate. The concrete shall be prepared by mixing the cement, sand and stone or gravel in an approved batch mixer with sufficient clean water and mixing sufficiently to produce a plasticity best suited to the condi- tions of weather and soil. The concrete mixed as above specified, shall be promptly spread on the surface of the sub -grade to the required thickness, and to such shape and grade as will insure the upper surface of the foundation after be- ing thoroughly compacted by rolling or tamping, being parallel with and three (3) inches below the grade �hereinbefore specified for the finished roadway. The upper surface of the foundation shall not be troweled smooth but shall be left moderately rough to grip the bituminous macadam pavement specified to be laid thereon. ` BITUMINOUS MACADAM PAVEMENT Upon the base or foundation, prepared as hereinbefore specified, there shall be Spread a layer of clean, hard, broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure :a thickness of three (3) inches thereof being spread on and used in each and every square yard of the roadway. As soon as practicable after the layer of limestone is spread on the foundation, it shall be given an Einitial rolling with a self propelling road roller weighing not less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the layer thereof is dry, there shall be evenly applied to the limestone ( at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic cement in such quantities as to insure riot less than one and three quarters (1 3-4) gallons thereof being evenly spread on and used in each and every square yard of the roadway, in addition to the squee-gee or second application coat hereinafter required. Immediately after, and progressing with, the application of asphaltic cement hereinbefore required, the surface to which the same shall have been applied shall be uniformly covered with dry and hard limestone screenings; free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size rang- ing from the largest particle that would pass through a sieve having circular holes three -fourths inch in diameter to the largest particle that would pass through a sieve having circular holes one-fourth inch in diam- eter. The limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course of stone to which same is applied. Immediately following the spreading of these limestone screen- ings the roadway so covered, shall be given a thorough rolling with a roller of the weight and type herein - before named. This rolling shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to which same is applied. The surface of the roadway shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreign material thereon. After being so cleaned there shall be evenly applied to the surface of the pavement a second application of asphaltic cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread as to insure not less than three quarters (3-4) gallon thereof being evenly spread and used on each and every square yard of road- way. Immediately after the second application of asphaltic cement is made and spread and progressing therewith there shall be evenly spread on the surface of the roadway so treated, clean, dry, hard granite chips, of a size ranging from a maximum dimension of three -fourths inch to a minimum dimension of one - eighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than one one -hundred and forty-fourth of a cubic yard thereof being evenly spread and used on each and every square yard of the roadway. A final rolling of the roadway shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the roadway is thoroughly compacted, and brought to a surface, free from de- pressions and true to form and grade. Any and all depressions developing during progress of the rolling, required in process of constructing the pavement herein provided to be built, shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. The gutters shall be kept trimmed to the required thickness and grade as the work progresses. 41 ' The cubic yardage of stone, herein required, shall be verified by measurement of volume thereof is ;*cars, or other conveyances, transporting same to said City, and prior to initial unloading, and shall beJur ther verified by measured length of dumps and height of grade marks on the work. The -stone shall rb hauled on to the work in boxes of uniform size and contents and of such shape as to enable an easy and exac determination of the volume contained therein to be made on the site. The asphaltic cement used -in the improvement herein provided to be made shall be of'such quality tha representative samples collected from shipments thereof shall be capable of meeting the following require ments and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural as-4 phalt and a flux to be tested with- and -proven -the best suited to the asphalt to be used; and shall not be a by-product of the oil refining or gas manufacturing industries. It shall be similar in character to that used] successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical;" BITUMINOUS MACADAM PAVEMENT properties and be so prepared for use as to best adapted to the climatic and traffic conditions of the roadway on which it is to be used. (2). Its specific gravity shall be greater than 980 at 77 degrees Fahrenheit. i (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit un- der 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various Hydrocarbons composing it shall be pres- ent in homogeneous solution, no granular constituent being present. 1 (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester.i (6). 50 grams of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above) described. (7). It shall be soluble in chemically pure carbon disulphide at air temperature 'to the extent of at least 95%. (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98 /% shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in 75 degrees Baume petroleum naptha, at the air temperature to the extent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per.i cent of fixed carbon or residue coke. SURFACE DRAINAGE SEWERS For the purpose of carrying off storm waters from the surface of the pavement herein provided to be constructed, surface drainage sewers of vitrified, salt glazed, tile pipe shall be laid as hereinafter specified. Said sewers shall be laid in open trenches in the ground in such manner as to conform to the elevations, lines and grades hereinafter specified. The pipe used in the construction of said sewers shall be of the type known as "Bell and Spigot" having an internal diameter of nine (9) inches, the metal of which pipe shall have a thickness of thirteen -sixteenths (13/16) of an inch and shall be not less than two (2) feet in length, cylindrical, straight, smooth, thoroughly vitrified, salt glazed, free from cracks or blisters and of the best quality and workmanship. The joints between the pipes shall be securely sealed with a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1/) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The joints between said pipes shall be wiped and pointed inside the pipes. The interior of the pipes shall be kept free from dirt or refuse of every description and shall be left clean at the completion of the work. The open trenches excavated to receive said sewers, shall be made at least twelve (12) inches wider than the ex-. terior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes for sealing joints. The materials excavated shall be kept compactly along the sides of the trench and shall be backfilled as soon as practic- able in order to occasion the least possible inconvenience to the public in use of the street or alley as the case may be. The trenches shall be promptly backfilled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. The open and unconnected ends of said sewers shall each be securely closed with a salt glazed, vitrified tile disc, and sealed in the manner above specified for joints between pipes. y� . 7 480 Said sewer or sewers as the case may be shall be laid as follows, to -wit: In and along a line ten (10) feet east of and parallel with the west lot line of Ashland Avenue and same produced south to the North Shore Channel of The Sanitary District of Chi cago , from and connecting with the said North Shore Channel to the center line of Colfax Street, thence west in and along the center line of said Colfax Street to a point thirty-three (33) feet west of the east lot line of East Railroad Avenue. The internal diameter of this sewer shall be twelve (12) inches. At its aforesaid connection, the elevation of the inside bottom of this server shall be one (1) foot below the datum plane of the City of Evanston, hereinbefore defined, and the grade thereof shall rise thence at a. uniform rate to an elevation of thirteen (13) feet above said datum at its terminus. The southerly sixty-eight (68) feet of said server shall be en- cased in a reinforced, Portland cement, concrete bulkhead, in such manner that the longitudinal axis of said sewer shall be one (1) foot from and parallel with the outer faces of the walls of said bulkhead. Reinforcing shall consist of four (4) bars of one (1) inch square, twisted steel placed on lines nine (9) inches from and parallel with the longitudinal axis of said sewer. The concrete of which said bulk- head shall be constructed shall consist of clean, hard limestone, clean sharp sand and Portland cement of the best quality mixed by volume in ratios of 1:2:3 respectively with sufficient clean water to give proper plasticity. Said bulkhead shall be provided, at its northern terminus, with a special manhole, cylindrical in shape to be constructed of hard burned sewer brick, having an average internal diameter of three (3) feet and a vertical height of sixteen (16) feet, (the walls of said manhole shall have a thickness of twelve (12) inches and shall rest upon the base of aforesaid bulkhead), and to be equipped with a cast iron cover weighing not less than five hundred forty (540) pounds. MANHOLES `1`hre a brick manholes shall be built of hard burned sewer brick, upon the sewer or sewers, as the case may 1)e, hereinbefore provided to be constructed and shall be located at the points hereinafter specified. Said manholes shall ie placed vertically in the ground over the center line of the sewer or sewers, as the case may be, hereinbefore specified in such manner as to bring the tops of the iron covers herein required for said manholes when in place to the upper lurface of the proposed pavement. Said manholes shall be cylindrical in shape having an internal diameter of thirty - §ix (36) inches at the upper surface of the base and upward to the lowest header course being uniformly drawn in I twenty-four (24) inches in diameter at the top of the masonry by means of six (6) header courses of brick laid end- wise and horizontally, the diameter being decreased uniformly by each course to fit the iron covers hereinafter specified _o be furnished and set on the walls of said manholes. The walls of said manholes shall rest upon the base thereof without offsetting and shall be eight (8) inches thick, built (except as above specified for header courses) of alter- nate vertical and horizontal courses of brick. The brick used in the construction of said manholes shall be thoroughly wetted with water before being placed and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1%) parts of clean sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. The base of said manholes shall begin at a point five (5) inches below the outside bottom of the sewer hereinbefore specified and shall extend upward to said outside bottom and along the sides of said sewer to a point midway between ithe top and bottom of said sewer, said base to be circular in form, the diameter of which base shall be fifty-two (52) inches. The brick used in forming said base shall be laid horizontally in such manner as to break joints. That portion of the upper half of the sewer included in said manholes shall be neatly removed leaving the lower half thereof to form the invert of the manhole. Said manholes shall each be equipped with a circular castiron cover having a tight lid, weighing not less than five ;hundred and forty (540) pounds, of the type known as "Chicago City Standard Heavy" having an extreme height of mine (9) inches and having an internal diameter of twenty—four (24) inches at the base and twenty-two (22) and three- ifourths (/) inches at the top thereof. Said manhole covers herein specified to be furnished and set, shall be imbedded in mortar of the kind and quality hereinbefore specified and shall rest on the tops of the walls of said manholes, which walls shall be built to such height as will bring the tops of the covers when set in place, to the surface of the pavement hereinbefore specified. Said manholes herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: On Colfax Street: One at the center line of East Railroad Avenue. One at a point ten (10) feet east of the v6st line of Ashland Avenue. On Ashland Avenue and Ashland Avenue produced south., One at a point two hundred fifteen (215) feet south of the south line of Colfax Street. CATCH BASINS For the purpose of receiving storm waters from the surface of the pavement herein provided to be con- structed four catch basins shall be constructed at the necessary points along the center line of said pavement. Said Catch basins sholl be constructed of hard burned sewer brick and placed vertically in; the ground in such manner as to bring the tops of the iron covers herein required for said catch basins, when in place, to the upper surface of the proposed pavement. Said catch basins shall be cylindrical in shape having an internal diameter of thirty-six (36) inches at the bottom and upward to the lowest header course, being uniformly drawn in to twenty-four (24) inches at the top of the masonry by means of three (3) header courses of brick, laid endwise and horizontally, to fit the iron covers hereinafter specified to be furnished and set on the walls of said catch basins. Said catch -basins shall have walls eight (8) inches thick built (except as above specified for header courses) of alternate vertical and horizontal courses. The brick used in the construction of said catch - basins shall be thoroughly wetted with water before being used and shall be laid in a mortar composed by volume of one (1) part of Portland cement of the best quality and one and one-half (1 112) parts of clean, sharp sand mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed and made secure against leakage. Said catch -basins shall each rest on a solid bottom of two (2) inch pine planks, laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two (2) inches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure.fifty-four (54) inches in diameter and shall have its upper side placed four(4) feet below the upper surface of the brick wall for said catch -basin. Said catch -basins shall be connected with the sewer, or sewers as the case may be, now existing, or herein provided to be constructed, as the case may be, in and along the center line of the said pavement, along which center line and over said sewer or sewers, the respective catch -basins are to be constructed. Said catch -basins shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed tile pipe having an internal diameter of six (6) inches and of the type known as "Bell and Spigot," the metal of which -pipes shall be three -fourths (314) of an inch in thickness and shall be not less than two (2) feet in length. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, and in all respects of the best quality and workmanship. All joints between the pipe shall be se- curely sealed with a mortar of the quality herein required for brick walls in catch -basins. Each catch -basin, connection shall start in a six-inch "Y" branch of tht quality and laid in the manner required for sewers, which "Y" branch shall be set in the said sewer at a point not less than eight (8) feet in advance of the center of the catch -basin measured along and in the down stream direction of the sewer. The pipe shall be laid true to line and grade and the connection shall enter the catch -basin through the brick wall thereof at a point two and one-half (2 112) feet above the top of the plank bottom of said catch -basin. The pipe entering the catch -basin through the brick wall thereof, shall be an elbow with the bell end turned downward inside the catch -basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than: the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes; for sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches' and shall be back -filled as soon as practicable, in order to occasion the least possible inconvenience to the public in use of the alley. The trenches shall be promptly back -filled to a depth of twelve (12) inches above the top of the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch -basins shall each be equipped and fitted with a circular cast iron grate cover weighing not less than three hundred and sixty (360) pounds. Said grate to be so constructed as to freely admit water from the surface of the pavement to the catch -basin) and having a vertical height of nine (9) inches, the opening in said cover shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) inches at the top thereof. The diameter of the lid or grate for said covers shall be 22 314 inches. Said' catch -basin covers herein provided to be furnished and set shall rest on the walls of the catch -basins herein specified to be constructed. Said covers shall be imbedded in a mortar of the quality herein required for brick walls in said catch -basins. The walls shall be built to such height as will bring the tops of the' covers when set in place, to the upper surface of the pavement at points where said catch -basins are located. Said catch -basins herein provided to be constructed, referring to the vertical axis thereof, shall be located as follows: MISCELLANEOUS SPECIFICATIONS BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be har d .burned sewer brick of the best quality. The brick shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter no r more than three (3) per cent, by weight of clay. ; Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five' (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and proportion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. . 482 CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to-�vit: Fineness. The cement shall be so ground that 92 % will pass through a standard sieve, having 10,000 meshes and 75% will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and shall be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, warping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water six days shall likewise withstand the steaming and boiling specified to the neat pat. - Setting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air .......................................... .... .... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength "r days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ....................... _ ......... 275 lbs. The briquettes shall show no retrogression in strength within the period specified. Samples of the cement proposed to be used in the -,vork shall be submitted in such quantities and at such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, brand or stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE The tile pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said pipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the impriovement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of five hundred thirteen and a ighteep hundredths dollars ($ 513.18 ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of five hundred thirteen and eighteen hundredths dollars ($ 513.18 ), shall be applied toward the cost of making, levying and collecting such assessment. 13i9i98 � 48 Section 4. That the aggregate amount herein ordered to he assessed against the property, and also the 1 assessment on each lot and parcel of land therein assessed, shall be divided into ten(10) installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the :Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of the City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- visions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve- ments," approved June 14th, A. D. 1897, and the amendments thereto. Section 6. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the loth day of July A.D. 1923. Approved July 12, 1923 John F. Hahn H.P. Pearsons, City clerk Mayor* RECOMMENDATION, ESTIMATE AND ORDINANCE RECOMMENDATION BY BOARD OF LOCAL IMPROVEMTS To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: We herewith submit an ordinance providing that title be acquired by the City of Evanston (for the purpose of a public street or thoroughfare) by condemning therefore, lots seventy- four (74), seventy-five (75), ninety-seven (97) and one hundred twenty-one (121) and the South ten (10) feet of lots seventy- three (73), seventy-six (76), ninety-eight (98) and one hundred twenty two (122), all in Hastings Addition to Evanston, being a subdivision of the Southeast one -quarter (j) of the Northwest one -quarter (-J) of the Southwest one -quarter (-J) and the East one-half (*) of the Northeast one -quarter (-fl of the Northwest one -quarter (#) of the Southwest one -quarter (-t) of fractional section eleven (11), Township forty-one (41) NQrth, Range thirteen (13) East of the Third (3rd) Principal Meridian, in the City of Evanston, County of Cook, State of Illinois; together with an estimate of the cost of said improvement and rec om fiend the passage of said ordinance and the making of the improvement contemplated therein. Respectfully submitted, H.P. Pearsons, Wm. Blanchard, Hal W. Smith. Board of Local Improvements of the City of ,Evanston. Dated, Evanston, Illinois. July 10, 1923. ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled: The Board of Local Improvements of the City of Evanston having adopted a resolution that title be acquired by the City of Evanston (for the purpose of a public street or thoroughfare) by condemning therefore, lots seventy-four'.(74), seventy-five(75), ninety-seven (97) and one hundred twenty-one (121) and the South ten (10) feet of lots seventy-three (73), seventy-six (76), ninety-eight (98) and one hundred twenty-two (122), all in 484 Hastings Addition to Evanston, being a subdivision of the Southeast one -quarter of the Northwest one -quarter f'f) of the Southwest one -quarter ) and the East one. (-ttj of the Northeast one -quarter ( ) of the N rthwest one -quarter W of the Southwest one -quarter W of fractional section eleven (11). Township forty-one (41) North, Range thirteen (13) East of the Third (3rd-) Principal Meridian in the City of Evanston, County of Cook, State of Illinois; and presented to the City Council of the City of Evanston, a recommendation that such improvement be made, I herewith submit an estimate of the cost of said improvement, as described in said resolution, including labor, material and lawful expenses attending the proceedings for making said improvement (exclusive of the value of the land to be taken or damaged) and the cost of making and collecting the special assessment, as provided by law, viz: ESTIMATE OF COST For removing trees, tumps and rubbish from, and the cleaning and grading of the surface of the land to be acquired for the purpose of making the same suitable and safe for public use . . . . . . $ 300.00 For lawful expenses attending the proceedings for making said improvement and the cost of making and collecting the special assessment therefore, not to exceed six per cdntum (6%) of the amount awarded for the land or property taken or damaged. 75.00 Total 375.00 And I hereby certify that in my opinion the above estimate does not exceed the probable cost of the above proposed improve- ment and the lawful expenses attending the same. Dated, Evanston, Illinois. July 10, 1923 . Wm..Blanchard, Engineer of the Board of Local Im- provements of the City of Evanston. AN ORDINANCE Providing that the City *of Evanston a cquire title to lots seventy- four (74), a.eventy-five (75), ninety-seven (97) and one hundred twenty-one (121) and the South ten (10) feet of lots seventy- three (73r, seventy-six (76), ninety-eight (98) and one hundred twenty-two (122), all in Hastings Addition to Evanston, being a subdivision of the Southeast one -quarter (-J) of the Northwest one -quarter (j) of the Southwest one -quarter (f) and the East one-half (*) of the Northeast one -quarter (-J) of the Northwest one -quarter (-f) of the Southwest one -quarter (-J) of fractional section eleven (11)0 Township forty-one (41) North, Range thirteen (13)°East of the Third (3rd) Principal Meridian, in the City of Evanston, County of Cook, State of Illinois, by condemning the above described property for the purpose of a public street or thoroughfaEre. .lE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: Section 1. That for the purpose of a public street or thoroughfare, the City of Evanston acquire title by condemning therefor lots seventy-four (74), seventy-five .(75), ninety- seven (97) and one hundred twenty-one (121) and the South ten (10) feet of lots seventy-three (73), seventy-six (76), ninety- eight(98) and one hundred twenty-two (122), all in Hastings Ad- dition to Evanston, being a subdivision of the Southeast one - quarter (-*) of the Northwest one -quarter (-J) of the Southwest one -quarter (*) and the East onej+half (*) of the Northeast one - quarter ( of the Northwest one -quarter( ) of the Southwest one - quarter (; of fractional section eleven 11), Township forty- one (41) North, Range thirteen (13) East of the Third (3rd) Principal Meridian, in the City of Evanston, County of Cook, State of Illinois. IZ 0198 P6W . . Section 2. That the recommendation of the Board of Improvements of the -City or Evanston providing for said improve- ment, together with the estimate of the cost thereof made by the Engineer of said Board, both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and th:e whole cost thereof, including the sum of seventy-five (75 ) dollars, being the amountincluded in the estimate of said Engineer, hereto attached, as the,cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Im,provements" approved June 14th,A.D. 1897 and the amendments thereto and that said sum of seventy-five dollars (#75.00) shall be applied toward the cost of making, levying and collecting such assessment. ` ` Section 4. The cost of the improvement herein described, shall be payable in one installment, Section 5. That the Corporation Counsel be and he is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special assessment for said improvement and also to ascertain the just compensation to be made for, private property to be taken or damaged by the making of said improvement and to ascertain what property will be benefited by such improvement and the amount of such benefit, in accordance with the provisions of this ordinance and in the manner prescribed by law. Section 6. That all ordinances or parts of ordinances conflicting with this ordinance, be and the same are hereby repealed. Section 7. This ordinance shall b e in force from and after its passage. Adopted by the City Council of the Cityof Evanston on the loth day of July A.D. 1923. Approved: July 12, 1923. John F. Hahn, H.P. Pearsons, City Clerk Mayor. - - - - - - - - - - - BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: Section 1. That the Public Alley, twenty (20) feet in width, lying north of and adjoining lots twenty (20), twenty- one (21), twenty-two (22) and twenty-three (23) in Block twenty- two (22) in Stewart's Resubdivision of Blocks twenty-two (22), twenty-four (24) and twenty-six (26) North Evanston, in the City of Evanston, Cook County, Illinois, the plat of said Stewart's Resubdivision having been filed for record April 23, 1880, in the office of the Recorder of Deeds of Cook County, Illinois, and entered in Book #15 of plats, Page 19 as Document #268048, be and the same is hereby vacated, as the same is no longer required for public use and the interests of the City of Evanston will be subserved by such vacation. Section 2. The vacation herein provided for is made on consideration of the relinquishment, to the` City `of Evanston, by owners of property adjoining said alley on the north side thereof, of any and all interests in said alley which may acrue to said owners by reason of this vacation. Section 3. The plat hereto attached indicating by the words "Public Alley Hereby Vacated" the property vacated, is hereby. approved and made a part. of this ordinance, and the City Clerk is hereby directed to certify the same as such. Section 4. This ordinance shall be in full force and effect from and after its passage and approval and the filing in the office of the Recorder of Deeds of Cook County, Illinois, of a certified copy of this ordinance, to which is attached a plat showing property vacated. Adopted by the City Council of the Cityy of Evanston on the loth day, of July A.D. J.923. Approved Tuly 12, 1923 John F. Hahn, H.P. Pearsons, City Clerk Mayor - - - - - - - - - - BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: Section 1. That portion lying west of and 'adjoining Lot eleven (11) of the Public Alley, sixteen (16) feet in width, lying east of and adjoining Lot seven (7), eight (8) and the south thirty-five (35) feet of Lot nine (9) in the resubdi- vi s ion of that part of Block five (5) , Village of Evanston, lying south of Emerson Street, in the City of Evanston, Cook County, Illinois, the plat of which resubdivision having been filed for record July 27, 1885 in the office of the Recorder of Deeds, Cook County, Illinois, in Book twenty (20) of Plats, Page twenty-eight (28) as Document number•642241, be and the same is hereby' vacated as the same is no longer required for public use and the interest of the City of Evanston will be subserved by such vacation. Section 2. The plat hereto attached indicating by the words "Public Alley Hereby Vacated" the property vacated is hereby approved and made a part of this ordinance, and the City Clerk is hereby directed to certify the same as such. Section 3. This ordinance shall be in full force and effect from and after its passage and approval and the filing in the office of the Recorder of Deeds of Cook County, Illinois, of a certified copy of this Ordinance to which is attached a plat showing property vacated. Adopted by the City Council o'f the City of Evanston on the loth day of July A.D. 1923. Approved: July 12, 1923. John F. Hahn, H.P. Pearsons, City Clerk. Mayor. AN ORDINANCE BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVAN S TON : SECTION 1. That the ordinance providing for the improving of the roadway of FLORENCE AVENUE, in the City of Evanston, County of Cook, State of Illinois, from the south lot line of Dempster Street t6 the north lot line of Main Street, also the roadways of all intersecting streets and alleys lying within said portion of said Florence Avenue and not included in the roadway thereof, by curbing with a Portland cement concrete curb, grading, paving with one course of vitrified paving brick ,(to be laid on a foundation six (6) inches in thickness made of blast furnace slag, bound with sand or limestone screenings) using one (1) inch sand cushion and an asphaltic cement filler for joints between brick, constructing catch basins, adjusting manholes and valv'e chambers, passed by the City Council on the 6th day of April, 1920 and approved by the Mayor on the 9th day of April, 1920, be and the same is hereby repealed. SECTION 2. This ordinance shall be in effect from and after its passage and approval. Adopted by the City Council of the City of Evanston on the ldth day of July A.D. 1923. Approved: July 12, 1923 John F. Hahn, H.P. Pearsons, City Clerk Mayor* IZ19198 BE IT ORDAINED BY THE CITY,COUNCIL OF THE CITY OF EVANSTON: Section 1. That hereafter it shall be unlawful for any person driving or operating a motor vehicle or other vehicle upon or along any of the public streets of the City of Evanston to turn or drive said vehicle around or to cause such vehicle to be turned or driven around in the reverse direction from which such vehicle is headed or is traveling, at any point on such public streets between intersecting Streets. Section 2. Any person violating any of the provisions of this Ordinance shall, upon conviction, b e fined not less than -five dollars nor more than two hundred dollars for each offense. Section 3. All ordinances or parts of ordinances in conflict herewith, are hereby repealed. Adopted by the City Council of the City of Evanston on the loth day of July A.D. 1923. Approved: July 12, 1923s John F. Hahn, H.P . Pears ons , City Clerk. Published in News Index Mayor July 13, 1923. An Ordinance Amending an ordinance entitled "An ordinance to classify, regulate and restrict the locations of trades and industries and thelocation of buildings designed for specified uses and to regulate and limit the height and bulk of buildings hereafter erected, to regulate and limit the intensity of the use of lot areas and to regulate and determine the area of yards, courts and other open spaces within and surrounding such buildings, and to establish the boundaries of districts for the said purposes and prescribing penalties for the violation of its provisions," adopted by the City Council of the City of Evanston, January 18, 1921, by classifying on the "Height Map" of said ordinance adopted January 18, 1921, as a *45 foot" Height District certain described property and prescribing penalties for violation of its provisionss, BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVAN STCN, ILLINOI S: Section 1. That the ordinance entitled "An ordinance to classify, regulate and restrict the locations of trades and industries and the location of buildings designed for specified uses and to regulate and limit the height and bulk of buildings hereafter erected, to regulate and limit the intensity of the use of lot areas and to regulate and determine the area of yards, courts and other open spaces within and surrounding such buildings, and to establish the boundaries of districts for the said purposes and prescribing penalties for the violation of its provisions," adopted by the City Council of the City of Evanston January 18, 1921, be and the same hereby is amended as hereinafter set forth. Section 2. That the district shown upon the "Use dap" attached to and made a part of the said ordinance adopted January 18, 1921 as a "C" Commercial District, and lying or fronting upon either side of Central Street East of East Railroad Avenue and West of Ridge Avenue,- excepting such portions thereof the height district of which has already been changed from a "35 foot" Height District to a "45 foot" Height District by ordinances adopted May 2, 1922 and March 7, 1923, and which Dis tric t is classified on the "Height Map" attached to and made a part of said ordinance adopted January 18, 1921, as a "35 foot "Height District, be, and the said district is hereby changed to a "45 foot" Height District. Ogg Section 3. The penalties provided for in the said ordinancr adopted January 18, 1921 for a violation of any of its regulations and restrictions, applicable to similarly situated 1045 foot" Height Districts, shall be applicable to said ordinance as herein amended. Section 4. All ordinances or parts of ordinances in conflict with any of the provisions of this ordinance are hereby repealed. t Section 5. This ordinance shall be in effect from and after its passage, approval and publication, according'to law. Adopted by the City Council of the City of Evanston on the loth day of July A.D. 1923, Approved: July 12, 1923. John F. Hahn, H.P Pearsons, City Clerk. Mayor* published in the Evanston News Index July 14, 1923• AN ORDINANCE Providing for the appointment of a Board of Appeals under the provisions of an Act of the General Assembly of the State of Illinois entitled, "An Act to confer certain additional powers upon city councils in cities and presidents and boards of trustees in villages and incorporated towns, concerning buildings and structures, the intensity of use of lot areas, the classi- fication of trades, industries, buildings, and structures, with respect to location and regulation, the creation of districts of different classes, the establishment of regulations and restrictions applicable thef-eto, the establishment of boards of appeals and the review of the decisions of such boards by the court". BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTOX: Section 1. That there be, and there is ilereby created a Beard of Appeals, consisting 'of -five members, in conformity with and under the provisions of the Act of the General Assembly of the State of Illinois entitled, "An Act to confer certain ad- ditional powers upon city councils in cities and presidents and boards of trustees in villages and incorporated towns concerning buildings and structures, the intensity of use of lot areas, the classification of trades, industries, buildings, and structures, with r espect to location and regulation, the creation of districts of different classes, the establishment of regulations and re- strictions applicable thereto, the establishment of boards of appeals and the review of the decisions of such boards by the court". One of the members of said Board of Appeals shall serve for a period of one year, one for two years, one for three years, one for four years, and one for five yearsp the successor to each of such members to serve for a term of five years. One of said members shall be named as chairman of said Board of Appeals at the time of his appointment. The terms of office of all members of said board shall expire on the first day of July of the years, respectively, in which their successors are to be appointed, or as soon thereafter as their successors shall have been duly ap- pointed and qualified. All such appointments shall b e made by the Mayor, by and with the consent and approval of the City Council. Section 2. The Board of Appeals herein provided for shall possess the powers and exercise such functimns as are prescribed in the Act named in Section 1 hereof, in the manner specified in said Act, and as may hereafter be prescribed by ordinance in con- formi`ty with the provisions of said Act. Section 3. All ordinances or parts of ordinances in conflict with any of the provisions of this ordinance, are hereby repealed. Section 4. This ordinance shall be in force from and after its passage and approval. 1�t9i98 Adopted by the City Council of the City of Evanston on the loth day of July A.D. 1923. Approved: July 12, 1923. John F. Hahn, H.P. Pearsons, City Clerk. Mayor. Published in News Index July 26, 1923. AN ORDINANCE FIXING THE SIDDVALK GRADE ALONG THE EAST SIDE OF CHICAGO AVENUE FROM THE SOUTH LOT LINE OF DWPSTER STREET TO THE NORTH LOT LINE HAM� I.J STREET. BE IT ORDAINED BY. THE CITY COUNCIL OF THE" CITY OF EVANSTON: Section 1. That the grade or elevation of the east edge of the sidewalk along the east side of Chicago Avenue, from. the south lot line of Dempster Street to the north lot line of Hamilton Street, in the City of Evanston, Cook County, Ill ino is , be and the same is. hereby established and fixed as follows:- measured in feet and decimal parts thereof; above the datum plane of said .City, to wit : Location of Grade Point Elevation A At the south lot line of Dempster Street 23.71 At a point twenty-five (25) feet south of the south lot line of Dempster Street. 23.65 At a point two hundred seventy-five (275) feet south of the south lot line of Dempster Street 24.46 At, a point seventy-f ive (75) feet north of the . north lot line of Hamilton Street. 26.10 At the north lot line of Hamilton Street. 26.20 Section 2. That all ordinances or parts of ordinances conflicting with this ordinance ibe and the same are hereby - repealed. Section�3. This ordinance shall take effect from and r after its passage and approval as by law `provi ded. Adopted by the City Council of the City of Evanston on the 10th day of July A.D. 1923. 0 Approved: July 21, 1923. John F. Hahn, H.P. Pearsons, City Clerk. Mayor . - - - - - - - - - - BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EVANSTON: SECTION 1. It shall ,be unlawful for any person, firm or corporation to locate, build, construct, or maintain any building, structure, or premises in or upon which shall be kept, housed or stabled more than five horses, mules, asses, - cows or pigs, in any block in the City of Evanston in which a majority of the buildings, exclusive of outhouses and accessory buildings, shall be used exclusively for residence purposes, without that a permit from the Building Conunissi oner is first had and obtained, and without that the written consent of a majority of the proper ty owners, according to frontage, in said block; also the written consent of the majority of the frontage on the opposite side of the street from - the front lot line of said premises, and between the nearest intersecting streets; and also the written consent of the owners of a majority of the frontage within one hundred feet on each side of the proposed site in said block, is first -had and obtained. SECTION 2. A block, for the purposes of this ordinance is hereby defined as meaning all that property included within the space bounded on each side thereof by a public street 490 or railroad right-of-way, or by the right-of-way of the North Shore Channel of The Sanitary District of Chicago. SECTION 3. Any person, firm, or corporation violat- ing any of the provisions of this ordinance, shall be deemed guilty of a misdemeanor and, - upon conviction, shall be fined not less than Twenty Five Dollars, nor more than Two Hundred Dollars for each and every offense; and every day that such person, firm, or corporation shall continue to violate the requirements of this ordinance, after notice by- the Building Commissioner or any other public officer of the City of such violation, shall be deemed a separate offense. SECTION 4. All ordinances or parts of ordinances in conflict with any of the provisions of this ordinance are hereby repealed. SECTION 5. This ordinance shall be in force from and after its passage, approval and publication. Adopted by the City Council of the City of Evanston on the llth day ' of September A.D. 1923. Approved: Published in News Index September 12,• 1923. Sept. 12, 1923. John F. Hahn, H.P. Pearsons, City Clerk. Mayor* AN ORDINANCE Establishing and appointing the Evanston Zoning Commission, prescribing its functions, and designating the Building Com- missioner as the officer to enforce all- ordinances passed under the terms of an Act of the General Assembly of the State of Illinois, entitled: "An Act to confer certain additional powers upon city councils in cities, and presidents and boards of trustees in villages and incorporated towns, concerning build- ings and structures, the intensity of use -of lot. areas, the classification of trades, industries, buildings, and structures, with respect to location and regulation, the creation of districts of different classes, the establishment of regulations and re- strictions applicable thereto, the establishment of baords of appeals and the review of the decisions of such boards by the court". BE IT ORDAINED BY THE' CITY COUNCIL OF THE CITY OF EVANSTON: Section 1. That there b-e and there is hereby created a Commission consisting of five members, which is hereby designated as Evanston Zoning Commission, in conformity with and under the Act of the General Assembly of the State of Illinois entitled, "An Act to confer certain additional powers upon city councils in cities and presidents and boards of trustees in villages and incorporated tovms, concerning buildings and structures, the intensity of use of lot areas, the classification of trades, industries, buildings, and structures, with respect to location and regulation, the creation of districts of different classes, the establishment of regulations and restrictions applicable thereto, the establishment of boards of appeals and the review of the decisions of such boards by the court". Section 2. That the said Evanston Zoning Commission hereby established, shall consist of the following named persons who are hereby designated and constituted members of said Com- mi s si on : C.D. MacPherson Harry A. Dow.. William A. Illsley Philip R. Shumway Frank B. Dyche Section 3. That the persons hereby designated members of the said Evanston Zoning Commission, shall hib1d their re- IZ0198 ---I 491 ; sp ective off ices until . heir successors are respectively appointed by the City Council. ` SECTION 4. That the said Evanston Zoning Com- mission shall investigate and make recommendations to the City Council concerning the subject matter of amendments to the ordinance passed by the City Council on January 18, 1921, _and approved by the Mayor on January 19, 1921, entitled: "An Or- dinance to classify, regulate and restrict the locations of trades and industries and the location of buildings designed for specified uses and to regulate and limit the height and bulk of buildings hereafter erected, to regulate and limit the intensity of the use of lot areas and to regulate and determine the area of yards, courts and other open spaces within and surrounding such buildings, and to establish the boundaries of districts for the said purposes and prescribing penalties for the violation of its provisions," and all amendments thereto. SECTION 5. `rhat said Evanston Zoning Commission, in addition to the powers and functions prescribed in Section 4 of this Ordinance, shall have the powers and shall exercise the functiond prescribed by Section 4 of the Act of the General Assembly of the State of Illinois, entitled az in Section 1 of this Ordinance. Said Commission shall have the power" to `designate its own Chairman and Secretary and to prescribe rules of procedure, in conformity with the pro- visions of said Act. SECTION 6. `That the Building Commissioner of the City 'of Evanston is hereby designated as `the Officer of said City to enforce all ordinances of said City relating to the subject matter included in said Act of the General Assembly of the State of Illinois, entitled as in Section 1 of this Ordinance. Said Building Commissioner shall have the powers and shall exercise the functions prescribed by said Act and by the terms of all ordinances of said City now in force or hereafter passed, relating to the subject matter included in said 'Act, and not inconsistent therewith. ` It shall also he the duty 'of said Building Commissioner to render such assist- ance to said Evanston Zoning Commission in the preparation for and conduct of its public hearings as he may be requested so to do by said Cpmmissi on. SECTION 7. All ordinances and parts `of ordinances in conflict with any -of the provisions of this ordinance, are hereby repealed. SECTION 8. This ordinance shall be in effect from and after its passage and approval. Adopted by the City Council of the City of Evanston on the llth day of Sept em1rer A.A. 1923. Approved: Sept. 12, 1923. John F. Hahn, H.!�. Pearsons , City Clerk Mayor . AN ORDINANCE OF THE CITY 'OF EVATTS^lON FOR A GENERAL TAX LEVY WITHIN THE LIMITS OF THE DISSOLVED AND DISCONTINUED EVANSTCN NORTMTTEST PARK DISTRICT" FIDR THE FIOCAL YEAR OF SAID EVANSTON NORTHWEST PARK DISTRICT ENDING MARCH 31, 1924.' BE IT ORDAINED BY THE CITY COUNCI_TJ OF THE CITY OF EVANSTON, ILLINOIS: Section 1. That whereas the Evanston Northwest Park District whose limits lie wholly within the City of Evanston has been duly dissolved and discontinued as the result of an election duly held in said district for said purpose on April 1, 1919, and by an order duly entered in .the County Court of Cook County, Illinois, on to -wit, April 11, 1919, said petition to dissolve bearing the general No. 42171 in said Court, and whereas by an amendment approved June 24, 1915 and in force 492 July 1, 1915, to an Act of the General Assembly of the State of Illinois entitled, "An Act to provide for the organization of park districts and the transfer of submerged lands to those bordering on -navigable bodies of water", approved June 24, 1895 and in force July 1, 1895, the power is duly vested by operation of law in the members of the City Council of the City of Evanston to levy taxes within the limits of said dissolved and discontinued the Evanston Northwest Park District for the purpose of paying its outstanding debts, obligations or lia- bilities and the necessary expenses of closing up the business of such Park District. NOW THEREFORE the sum of Three -Thousand Eighty Dollars ($3080.00) being the amount necessary to be collected from the tax levy for the year 1923 within the limits of the Evanston Northwest Park District be and the same is hereby levied and assessed on all real and personal property lying within `the limits of said dissolved and dis- continued district subject to taxation according to the valu- ation of such property as the same is or shall be assessed for State and County purposes for the year 1923 as follows: BONDED INDEBTEDNESS FUNDS For the Principal of two bonds dated October 1, 1912, as heretofore levied by ordinance of The Evanston Northwest Park District adopted August 8, 1912, For Principal .of two bonds dated April -For interest on bonds dated October 1, as heretofore levied by ordinance Evanston Northwest Park District, August 8, 1912, For interest on bonds dated July 15, heretofore levied by ordinance of Evanston Northwest Park District April 8, 1915, For interest on bonds dated April 1, heretofore levied by ordinance of Evanston Northwest Park District March 9, 1916, 1,1916. 1912, of the adopted 1915, as the adop ted 1916, as the adopted AMOUNTS DUE ON INSTALLMENTS OF SPECIAL For 8th installment of Special Assessment No. 632 in the County Court, Cook County, Illinois, for paving Colfax Street assessed against Lots 1 to 8-both inclusive and Lots 119 and 20 in Block 4 in Ewing's Addition to Evanston, the property of the Evanston Northwest Park District, $1,000.00 1,000.00 405.00 �i # 01 270.00 2,'945.00 ASSESSMENTS. 135.00 3,080.00 SECTION 2. That the City Clerk of the City of Evanston, Illinois, be and he is hereby directed to file 'with the County Clerk of Cook County, Illinois, within the time required by law, a copy of this ordinance duly certified by said City 'Clerk. SECTION '3. This ordinance shall be in force from and after its passage. Adopted by the City Council of the City of Evanston on the 11 th day of Sept. A.D. 1923. Approved: Sept. 12, 1923. John F. Hahn, H.P. Pearsons, Cite Clerk. Mayor* IZ 0198 Recommendation, Estimate and Ordinance. RECOMMENDATION BY BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled 494 1 0 We herewith submit an ordinance providing that l the Public Alloy In block tno (2) in the reaubdivio ion bf-13loa co one (1) and -two (2) Chlto6ra Addition to Yva;iaton, extending from the south lot Lino of Qroenlmf Stroot to tho nort % tot ' Uno of too Strouto in tho City of z1vans3ton, County 'of Cook, State of -1111- polo. be itVrovod by Urading, paving to a width. of nineteen ( lid ) foot raith a Portland count oonordto pavoemnt din (6) lnohos In thlolmocaa, composed of Portland coment, sand and gravol, ' mIxe d by volymo in ratloc of 1:2 t3 reopectivol� alth oufflaieent cloari rateri to aivo proper lastlelty, uoing a bi uminouo fiXior strip (bavine a width of aft�8 ) incheo and - a thlakn000 of ono --half (*) inch) for exp;an3lon joints in pavomnto eonotructing necee scary cat©hbaoine oylindric&l in ahspo, leaving an Internal diam3teer of thirty-six (36) lnoheo,.of hard burned sooner briclt laid In am► mortar covVocod by volume of one (1) part of kortland cement of the boat quality one one and ones -half (*) part© of clwn, aharp nand mixed with cuffloiont clean wator to 1ve proper plaisatiolty (the w allo of v2Aah oatabbaoin ahall be eight (8) Inohoo in thieknoso and havo a vertical Inight of four (d) feet), oaid -c atahbaoin to be rovidcd with a oir- cul r o east iron oovoro wol&ing not le�sao than trace hundred and sixty (360) poundso to be placod' upon tho top of the aallo thoroot and imbeddod in a mortar of the kind and quality horoafn specified for cald brio2s va lla and a oiroul:ar plank bottom tvo (2) inohoo In thlckn000 and to be donne cte3d with the surface drainage comer by mina of vitrlflod a salt lazed* d: txlo pipe* having an Internal diameter of six (6) lnohos, Tthe m:aallo of which piped shall bavc a thickness of throo•fourtho (3/4) of an !not►) the joints between the pipes ueod in constructing said catchbavin cormootlon shall be securely coaled with a3 mortar of tho !rind and quality heroin speci- fied fied f'orca-atalZaaino and odjuoting to grade present moadam paving adjoining and connecting with the prop000d improvownt; togother nith can ootimte at the coot of oald ittlprovomant and re000me=nd the paacaeo of said ordinanco and the .making of tbo improv©r•.mnt contem- plated therein* Raopoot/fu2ly oubmlttcd, A77 hoard or l imi Yr4provesontsa of Mted, manaton ' 1111nolas the City of 2vanston. 1 ESTIMATE OF ENGINEER OF BOARD OF LOCAL IMPROVEMENTS. To the Mayor and Aldermen of the City of Evanston in the City Council Assembled : The Board of Local Improvements of the City of Evanston having adopted a resolution that the Public Alley in Block ttao (2) in the reaubdlvioion of Blooko ono (1) and tUO (2) White l e Addition to nvantaton, extending from the couch lot lines of -u`reonleaf Utrecht to the north lot line of hno street, in the city of zvanoton. 00unty of Gooks Utate;3 of iI121noln, be improved by aradings paving to as width of tainetooh (19) foot' t71th a Portland eomnt concrete paVoWnt aft (6) inches In thlokno-oaa, aomap000d of Portlnd aemsnt, sand and grmveig mixod by volute in ratioo of 1:2:3 reopeotivvly with duffIclont clean 'aator to givo proper plasticity, using .a bituminous filler atai 01aving a width of sal.* (6) Inches and a thicknessat ono =k7if ( ) inch) for 'expanolon jolnto in pavemont', constructing newest+ary c atohbaoln, cylindrical in ahapog, haavlM an internal diameter of t%$rtyain (36) inahoo9 of hard burned acme3r brick laid la . a mortar co:*000d by volumo of one (1) part of Portland comnnt of the best or=llty and one and onewbalf M) parts of clean, sharp Land mixed with cufficloat olcan Ynter to Siva roper plasticity (the wells of which oatoh baaoin shalt be el&t �g ) inches in thickneas and hmvQ as vertical holGht of four (4) foot).* cold catchbaoin to b�Q provldcd sick as elrcu2nre east Iron covor, vcleAing_not loco gzbI to be provided with a circular, east iron cover, weighing not less than three hundred and sixty (360) pounds, to be placed upon the top of the walls thereof and imbedded in a mortar of the kind and quality herein specified for said brick walls and a circular plank .bottom two (2) inches in thickness and to be connected with the ;surface drainage sewer by means of vitrified, salt glazed, the 'pipe, having an internal diameter of six (6) inches, (the galls of which pipe shall have a thickness of three -fourths (3/4) of an inch) the joints between the pipes used in constructing said catchbasin connection shall be securely sealed with a mortar of the kind and quality herein specified for catehbasin, and adjusting to.grade . present macadam paving adjoining and connecting with the proposed. improvement. BE IT ORDAIIFED BY TM CITY COUNCIL OF THC CITY OF EV'ANSTON: SECTION 1. That a local improvement shall be made,within the City of .&vanston. County of Coots, State of Illinois, the nature# character, locality, description of which local improvement is as follows, to -wit: The Public Alley in Block two (2) in the resubdivision of Blocks one (1) and two (2) Uhitela Addition to Lvanston.'ex- tending from the south lot -line of Greenleaf -Street to the north lot line of Leo Street, in the City of-Avanston, County of Cook. State of Illinois, be and the samo is hereby ordered improved as follows: Location of Pavement The center line of the pavement herein provided to be con- structed shall coincide with tho center line of the alley within which said improvement is included. Vidth of Pavement The width of the pavement herein provided to be constructed shall be nineteen (19) feet. Grade of Pavement The grade of the upper surface of the finished pavement herein provided to be constructed is hereby established as follows, measured in feat and decimal parts of a foot above the datum plane of the City of Evanston. to -wit: Transverse Section of Alley: Outer Edges of Pavement Center line of Pavement At the north lot line of Lee Street 17.80 17.55 At a point one hundred eighty-four (184) feet north of the north lot line of 18.80 18.55 Lee Street. At a point four hundred one (401) feet .north of the north lot line of Lee Street, 17.70 17.45 At a point five hundred seventy -ore (571) feet north of the north lot line of 18.70 16045 Lee Street. At the south lot line of Greenleaf Street.— 18.40 18.15 ALLEY PAVING The grade of the center line and outer edges of the pavement at intermediate points shall be respec- tively proportional to the foregoing. The datum plane hereinbefore mentioned is the plane and Michiganf the low a ter s rk f Canaland is 22.41 feet Lake lgbelow the year A. D. 1847, as established by the Trustees of Illinois U. S. Geological Survey Bench Mark on the north sid Davishst street Evanston.Sherman Avenue) in sa dman Avenue entrance to the bCityl of known as City Hall, located at the northwest corner o Y Evanston. "I surface '.of the pavement erin' provided to be constructed, when completed, shall conform circle passing'through the respective grade points in the center line and at the outer edges'of and shall' be true and symmetrical. • GRADING The alley herein provided to be improved shall be cleaned prior to the paving thereof, in a thorough anner of all deteriorated planking; blocking or other debris. The soil of the roadway shall then be ex- vated or filled upon with other suitable soil, as the case may be, to such depth and shape a's will bring e upper surface, of the finished pavement, when constructed as hereinafter specified, to the elevations and ades hereinbefore established. The sub -grade shall be thoroughly compacted by means of a suitable.self- opelling roller or flooding with water as the case may require. Depressions or holes appearing as the pre - .ration of the sub -grade progresses shall be filled with suitable soil. Spongy earth that is unfit to be left the sub -grade, shall be removed by the contractor without extra charee. CONCRETE PAVEMENT —ALLEY Upon the subgrade, when prepared as hereinbefore specified, shall be constructed a concrete pavement, ii composed of Portland cement, sand and gravel mixed by volume in ratios of one part of cement, two parts s'sand, and three parts of gravel with sufficient clean water to give proper plasticity and in the manner here- Ktnafter set forth. The concrete shall be spread on the sub -grade in such quantity and to such form that af- er being compacted in place it shall have a uniform thickness of six inches. The Portland cement to be used in snaking this concrete pavement shall be of such quality that repre- entative samples collected from shipments made'for the job shall be capable of passing the following tests or fineness, soundness, initial setting, and tensile strength, to -wit: Fineness. The cement shall be ground so that 92 7o will pass through a standard sieve, having 10,000 meshes and 757o will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of neat cement, three and one-half inches in diameter, one-half inch in thickness at the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- tected by a damp cloth, for twenty-four hours, and shall then be subjected to steam for four hours, and hall -be immediately thereafter immersed in boiling water for four hours. The pat must show no check- ng, warping or swelling. Broken briquette of the neat cement which have remained in air one day and in Iili-water six days shall likewise withstand the steaming and boiling specified for the neat pat. - Setting. The cement when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show tensile strength not less than as follows: Neat Cement Age Strength 24 hours in moist air ........................................................ 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) .................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. The sand to be used for making the concrete shall be free from dust, clay, loam, vegetable or other deleterious matter. The grains of sand shall be angular and shall range in size from one -quarter inch down to the finest; but not more than three per cent shall pass a sieve having one hundred meshes per lineal inch. Wind - drifted sand shall not be used. The sand shall be of such quality that the mortar composed of one part of the cement hereinbefore specified and three parts of sand, by weight, when made into briquettes, will de- velop a tensile strength at least equal to the strength of a mortar of the same consistency and proportion made with the same cement and Standard Ottawa sand. In no case shall the sand, when used for this concrete, contain frost or lumps of frozen matter. < The gravel to be used in making this concrete shall be clean, hard, free from dust, loam, vegetable or other deleterious matter; and shall show sharp edged cubical fracturing. The gravel shall be of variable i_ sizes grading from a maximum dimension of two (2) inches down to a minimum of one-fourth (1-4) inch. (In no case shall the gravel when used for this concrete contain froste-or lumps of frozen matter. The sand and gravel shall be clean when delivered on the job, and shall be kept clean until used. i The method used for measuring the ingredients in the concrete shall be one that will insure a uniform ' VV roportion of materials in separate batches at all times. A sack of Portland cement (94 pounds) shall be i idered one cubic foot. " The concrete shall be mixed in a batch machine mixer of a type that will insure a uniform, distribution j of the ingredients throughout the mass. Ingredients of the concrete or mortar shall be mixed to the .de - a sired consistency and the mixing shall continue until the cement is uniformly distributed and the mass is p uniform in color, and homogeneous. Clean water, free from oil, acid, alkali or vegetable matter shall be ad- fmitted to the mixer in sufficient quantity to produce a concrete of a consistency such that mortar will flush i. to the surface under light tamping, but which can be handled without causing a separation of the gravel ,� fr_om the mortar. . tZ1919 The 'concrete shall be handled rapidly from ii r t a�men i shall be deposited in place on the sub -grade in a continuous operation so that sections of the M,r tween expansioli joints, hereinafter specified, shall be entirely completed and without the us,i -ring mediate cross forms or bulk -heads. Concrete shall not be retempered or used that has partially hariiene The concrete shall be compacted and brought to the established grade and shaped with a template or straight edge, and shall be brought to a comparatively even surface. After the concrete has been so brought -to grade and shape, it shall be finished by rolling with an approved metallic roller, having a smooth even sur- face. Said roller shall not be less than five feet in length, and not less than eight (8) inches not more than ; twelve (12) inches in diameter and weighing not less than one hundred pounds (100 lbs.),. The roller shall be operated across the pavement from side to side of same, by means of ropes attached to each side of the roller, at such angle with the center line of the pavement as to permit the roller to advance along the pavement two feet for each time across. After the roller has covered a given area in the manner de- scribed, the same area shall be similarly rolled by the roller for not less than three (3) times at intervals of fifteen (15) to forty (40) minutes, depending on the stiffening of the concrete, or as many times as may be ; necessary to remove excess water. After the rolling has been completed the pavement shall be finished by two (2) applications of a belt made of canvas, not less than six (6) inches wide and not less than two (2) feet longer than the width of the pavement. For the first application, vigorous strokes at least twelve (12) inches long shall be used. The longi- tudinal movement of the belt along the pavement shall be very slight. Y The second application of the belt shall be immediately after the water glaze or sheen disappears, and l the stroke of the belt shall be not more than four (4) inches, and the longitudinal movement shall be a continuous forward movement. y A suitable bridge to span the width of the pavement shall be used to finish the joints, no part of which shall be in contact with the finished work. A notched straight edge ten (10) feet in length shall be used for testing each transverse joint, prior to I ; and subsequent to final finishing. ' The straight edge shall be placed over the joint, parallel to the center line of the pavement and , moved across from curb to curb. When the surface of the concrete upon testing shows to be high or low, concrete will be added or removed to bring the surface its true shape. The concrete adjoining transverse joints shall be dense in character and after rolling shall be finished with a wood float, which is divided through the center and which will permit finishing on both sides of the filler at the same time. The finished surface of the concrete shall not vary more than one -eighth (1-8) of an inch from a two foot straight edge placed upon the concrete in any position. Workmen shall not walk on the freshly laid concrete; and no one shall be allowed on the concrete after it has been worked into form and position with a template or straight edge, until it has thoroughly hardened. EXPANSION JOINTS Transverse expansion joints not less than three -eighths (318) inch or more than one-half (112) inch in ! width shall be placed across the pavement at right angle to the center line of the roadway; spaced so as not to exceed thirty-three and ode -third (33 113) feet apart. All expansion joints shall extend through the entire thickness of the pavement. In these expansion joints there shall be placed a prepared strip of bi- tuminous filler of the thickness hereinbefore specified for expansion joints and extending from the bottom of the pavement herein specified to the upper surface of the finished pavement. The upper edges of all joints and the upper outer edges of the pavement shall be neatly troweled to a radius of one -quarter (/) inch. All metal, manholes, catch basin covers, and other fixed objects shall be separated from the concrete pavement by a joint filler of the same character as hereinbefore specified for expansion joints; which joint filler shall extend through the entire thickness of the pavement. PROTECTION PLATES As soon as the concrete has hardened sufficiently to prevent being pitted, the surface shall be spray- ed with water; and it shall be kept thoroughly vet for at least ten days. As soon as it can be done without damage to the concrete, the surface thereof, during hot and dry weather and if unshaded shall be covered with not less than one inch of earth, sawdust, straw or other suitable and available material, which cover- ing shall be kept wet for at least four days after being placed. In dry and hot weather freshly laid con- crete shall be protected by a canvas covering until it can be sprinkled or covered, as specified. The water and concrete aggregates shall be heated if at any time during the progress of the work the temperature is, or from weather reports will likely during the next twenty-four hours drop to (35) thirty- five degrees Fahrenheit. The concrete shall be protected against freezing for at least ten days after being laid down. In no case shall the concrete be deposited upon a frozen sub -grade. The forms used in constructing this pavement shall be sound, free from warp, and of sufficient strength to resist springing out of shape. The forms shall be securely staked or otherwise held to the established line, and their upper edges shall conform to the established grade. Wooden forms shall be thoroughly wetted and metal forms shall be oiled before concrete is deposited against them. All mortar and dirt shall be removed f rom forms that have previously been used. The pavement shall be thoroughly cleaned and open to the public as soon as the cement has set suffici- ently to receive the traffic without injury to the surface or body of the concrete. 98 CATCH For the purpose of receiving storm waters from the surface of the pavement herein provided to be con- Ltcted one catch basin shall be constructed at the necessary point along the center line of said pavement. �1 Catch basin shall be constructed of hard burned sewer brick and placed vertically in the ground in such ktner as to -bring the top of the iron cover herein required for said catch basin when in place, to the upper 'face of the proposed pavement. Said catch basin shall be cylindrical in shape having an internal diameter thirty-six (36) inches at the bottom and. upward to the lowest header course, being uniformly drawn in to enty-four (24) inches at the top of the masonry by means of three (3) header courses of brick, laid endwise :1 horizontally, to fit the iron cover hereinafter specified to be furnished and set on the walls of said catch Said catch -basin shall have walls eight (8) inches thick built (except as above specified for header ourses) of alternate vertical and horizontal courses. The brick used in the construction of said catch -basin hall be thoroughly wetted with water before being used all(], shall be laid in a mortar composed by vol- me of one (1) part of Portland cement of the best quality and one and one-half (1%) parts of clean, sharp and mixed with sufficient clean water to give proper plasticity. The masonry joints shall be neatly pointed nd made secure against leakage. Said catch -basin shall each rest on a solid bottom of two (2) inch pine ]inks, laid closely in single thickness and securely spiked to two (2) pine stringers, or cross planks two, (2) fiches thick by six (6) inches wide. The said bottom shall be made circular in form, and shall measure fifty-four (54) inches in d,ianaeter and hall have its upper side placed four (4) feet below the upper surface of the brick wall for said catch -basin. Said catch -basin shall be connected with the sewer, or sewers as the case may be, now existing, or erein provided to he constructed, as the case may be, in and along the center line of the said pavement, long which center line and over said sewer or sewers, the respective catch -basin is to be constructed. Said catch-hasin shall be connected with the sewer or sewers aforesaid by means of vitrified, salt glazed. le pipe having an internal diameter of six (6) inches and of the type known as "Bell and Spigot," the metal f which pipes shallbe three -fourths (�Y4) of an inch in thickness and shall be not less than two (2) feet in ;ngth. Said pipes shall be straight, smooth, thoroughly vitrified, salt glazed, free from cracks and blisters, lid in all respects of the best quality and workmanship. All joints between the pipe shall be securely Baled with mortar of the quality herein required for brick walls in catch -basin. Each catch -basin connection shall start in a six-inch "Y" branch of the quality and laid in the manner quired for sewers, which "Y" branch shall be set in the said sewer at a point not less than eight (8) feet advance of the center of the catch -basin measured along and in the down stream direction of the sewer. he pipe shall be laid true to line and grade and the connection shall enter the catch -basin through the brick all thereof at a point two and one-half (2/) feet above the top of the plank bottom of said catch -basin. The pipe entering the catch -basin through the brick wall thereof, shall be an elbow with the bell end turned wnward inside the catch -basin to form a trap. The pipes shall be laid in open trenches. The trenches shall be at least twelve (12) inches wider than the exterior diameter of the pipes so as to give at least six (6) inches clearance on both sides of the pipes fbr sealing the joints. The materials excavated shall be kept compactly along the sides of the trenches and hall he hack -filled as soon as practicable, in order to occasion the least possible inconvenience to the public Fif o use of the alley. The trenches shall be promptly hack -filled to a depth of twelve (12) inches above the top the pipes. Suitable soil shall be carefully packed under and around the pipes. Said catch -basin shall be equipped and fitted with a circular cast iron grate cover weighing not less than three hundred and sixty (360) pounds. Said. grate to be so constructed as to freely admit water from the surface of the pavement to the catch -basin, and having a vertical height of nine (9) inches, the opening in said cover shall have a diameter of twenty-four (24) inches at the base and twenty-three (23) inches at the top thereof. The diameter of the lid or grate for said cover shall be 22% inches. Said catch -basin cover herein provided to he furnished and set shall rest on the walls of the catch -basin herein specified, to be con- structed. Said cover shall be imbedded in a mortar of the quality herein required for brick walls. in said catch - :basin. The walls shall be built to such height as will bring the top of the cover when set in place, to the upper surface of the pavement at point where said catch -basin is located. Said catch -basin herein provided to be con- structed, referring to the vertical axis thereof, shall be located as follows: Alt & .~ tom► b0Nft" aM (#ft) 804 11M►Ri st. trt *ova I" 3fte ADJUSTMENT OF PRESENT MACADAM PAVING The present macadam paving where the same adjoins the proposed improvement shall be adjusted in such manner that after having been excavated or filled upon, as the case may be, with materials of kind and duality composing said macadam paving and having been thoroughly compacted it shall form a base or founda- tion for a bituminous macadam pavement to be placed thereon. The upper surface of said base or foundation when completed shall be two (2) inches below the finished grade of the proposed improvement where same adjoins said macadam paving. Upon the base or foundation, prepared as hereinbefore specified, there shall be spread, a layer of clean, hard broken limestone ranging in size from a maximum dimension of two inches to a minimum dimension of three -fourths inch. This layer of limestone shall be evenly spread, and in sufficient quantity to insure a thickness of two (2) inches thereof being spread, on and used in each and every square yard of the roadway. ` As soon as practicable after the laver of limestone is spread on the foundation, it shall be given an initial `rolling with a self propelling road roller weighing note less than ten tons. The initial rolling shall end as soon as the stone is set and ceases to creep under action of the roller. As soon as the initial rolling of the limestone is finished, and the laver thereof is dry, there shall be applied to the limestone (at a temperature not less than 250 nor more than 275 degrees Fahrenheit) an asphaltic ce- ment in such quantities as to insure not less than one(1) gallon thereof being evenly spread on and used; in each and every square yard of paving, in addition to the squee-gee or second application coat hereinafter required. MR t 9.1, a Im"`�n►ediately after, and 1eo ressi _ t1i, th �`a' lication of as halt ccement-hereiinbe�re re uired the•,su 1? g � 'p P qs. , face to which the same shall d�aye been d^pplied shall be uniformly covered with dry and hard limestone scree ings, free from clay, loam, dust, vegetable or other deleterious substances, and broken to a size ranging fn the largest particle that would pass through a sieve having circular holes three -fourths inch in diametef' the largest particle that would pass through a sieve having circular hales one-fourth inch in' diameter. T limestone screenings shall be used in sufficient quantity to snugly fill the interstices in the course, of stone which same is applied. Immediately following the spreading of these limestone screenings the paving s covered, shall be given a thorough rolling with a roller of the weight and type hereinbefore named. This rol - ing.shall continue until the screenings are driven into, and thoroughly bonded with, the layer of stone to whic same is applied. The surface of the paving shall next be thoroughly cleaned of all loose stone, dirt, leaves or other foreig material thereon. After being so cleaned there shall be applied to the surface a second application of asphaltic_ cement of the same kind and quality as that used in the first application. This second application shall be sufficient in quantity and so applied and spread, as to insure not less than three-quarters (Y4) gallon thereof being evenly spread and used on each and every square yard of paving. Immediately after the second appli- cation of asphaltic cement is made and spread (and progressing therewith) there shall be spread on the surface of the roadway so treated, clean, drv, hard granite chips, of a size ranging from a maximum dimension of three- I " fourths inch to a minimum dimension of one-eiighth inch. The granite chips shall be spread in such manner and quantity as to insure not less than -one one -hundred and forty-fourth of a cubic yard, thereof being evenly spread and.used on each and every square yard of paving. A final rolling of the paving shall closely follow the spreading thereon of these granite chips. The final rolling shall be done with a roller of the weight and type hereinbefore named. The final rolling shall continue until the surface of the pavement is thoroughly compacted, and brought to a surface, free from depressions and true to form and grade. Any and all depressions developing during, progress of the rolling, required in process of constructing the pavement shall be filled, as the rolling continues, with the same respective kind of stone as that on which the roller is operating. i The asphaltic cement used in the improvement herein 'provided to be made shall be of such quality that representative samples collected from shipments thereof shall be capable of meeting the following require- ; ments and of passing the following tests, to -wit: (1). The asphaltic cement shall consist of not less than sixty-five per cent refined, solid natural asphalt' and a flux to be tested with and proven the best suited to the asphalt to be used; and shall not be a by-product, of the oil refining or gas manufacturing industries. It shall be similar in character to that used successfully in the construction of sheet asphalt pavements, and shall possess such chemical and physical properties and'; be so prepared for use as to best adapt it to the climatic and traffic conditions of the roadway on which it is to be used. a (2). Its specific gravity shallbe greater than 980 at 77 degrees Fahrenheit. j (3). It must have a penetration between 5 and 10 millimeters at 77 degrees Fahrenheit under 100 grams for five seconds, and must not be harder than one millimeter penetration at 32 degrees Fahrenheit under 200 grams for one minute. (4). It shall be practically free from water, decomposition products, coke or inert free carbon, coal tar or any of its products, or other injurious matters, and the various hydrocarbons composing it shall be present in homogeneous solution, no granular constituent being present. (5). It must not flash below 350 degrees Fahrenheit when tested in a New York state closed oil tester. (6). 50 grains of the cement upon being maintained at a uniform temperature of 325 degrees Fahrenheit ! for five hours in a cylindrical vessel two and one-half inches in diameter, shall not lose more than 2 per cent in weight, and the penetration of the residue shall not be less than one-half that tested as above described. (7). It shall be soluble in chemically pure carbon disulphide at air temperature to the extent of at least 957o. ` (8). Of the bitumen of the asphaltic cement which is soluble in carbon disulphide at least 98/7o shall be soluble in cold carbon tetrachloride. (9). The bitumen of the cement shall be soluble in petroleum naptha, at the air temperature to the ex- tent of not less than 72 per cent. (10). Upon ignition, the bitumen of the cement shall yield not less than 9 per cent nor more than 15 per cent of fixed carbon or residue coke. I MISCELLANEOUS SPECIFICATIONS � BRICK All brick to be used in constructing catchbasins and manholes and in adjusting catchbasins, manholes and valve chambers for this improvement shall be hard burned sewer brick of the best quality. The brick ' shall be moistened before being laid in the work. SAND All sand to be used in the improvement herein provided to be made shall be sharp and clean and shall not contain vegetable or other deleterious matter nor more than three (3) per cent, by weight of clay. Said sand, when dry, shall pass a sieve having four (4) meshes per linear inch. Not more than twenty-five (25) per cent of said sand shall pass a sieve having fifty (50) meshes per linear inch, and not more than five • (5) per cent of said sand shall pass a sieve having one hundred (100) meshes per linear inch. The sand I shall be of such quality that mortar composed of one part of the cement herein specified and three parts of sand, by weight, when made into briquettes will develop a tensile strength at least equal to the tensile strength of a mortar of the same consistency and pro portion, made with the same cement and standard Ottawa sand and in no case shall the sand when used contain frost or lumps of frozen matter. CRUSHED STONE OR GRAVEL All crushed limestone or gravel to be used in the improvement herein provided to be made shall be - tough, durable, free from vegetable or other deleterious matter and shall contain no soft flat or elongated particles. In no case shall crushed gravel or limestone containing frost or lumps of frozen matter be used. PORTLAND CEMENT The Portland cement to be used in the improvement herein provided to be made shall be of such qual- ity that representative samples selected from shipment shall be capable of passing the following tests for fineness, soundness, initial setting and tensile strength to -wit: TP�"• 5f)D Fineness. The cement shall be so ground that 927o' will pass through a standard sieve, having-10,060 meshes and 75% will pass through a sieve having 40,000 meshes per square inch. Soundness. A pat of ii-eat cement, three and one-half inches in diameter, one-half inch in thickness at -the center and tapered to a feather edge at the circumference, made on glass, shall remain in the air, pro- cted by a damp cloth, for twenty-four hours, and shall then be subjected to steam -for four hours, and all be immediately thereafter immersed in boiling water for four hours. The pat must show no checking, 4 arping or swelling. Broken briquettes of the neat cement which have remained in air one day and in water 1' six days shall likewise withstand the steaming and boiling specified to the neat pat. pSetting. The cement, when mixed with twenty-eight per cent (by weight) of water, shall not take initial set in less than thirty minutes. It shall not develop hard set in less than one nor more than ten hours. Tensile Strength. Briquettes one square inch in cross section made of the cement shall show a tensile strength not less than as -follows: Neat Cement Age Strength 24 hours in moist air ....................................................... 175 lbs. 7 days (1 day in moist air, 6 days in water) ................................. 500 lbs. 28 days (1 day in moist air, 27 days in water) .................................. 600 lbs. One Part Cement, Three Parts Standard Ottawa Sand Age Strength 7 days (1 day in moist air, 6 days in water) ................................. 200 lbs. 28 days (1 day in moist air, 27 days in water) ................................. 275 lbs. The briquettes shall show no retrogression in strength within the period specified. Samples of the cement proposed to be used in the work shall be submitted in such quantities and at i such time and place as will enable required tests to be made. All cement delivered on the work shall be contained in sound packages bearing the names, stamp of the maker; and shall be thoroughly protected against damage until used. SEWER PIPE brand or The tile ,pipe to be used in the improvement herein provided to be made shall be of the bell and spigot type. Said pipe shall be cylindrical, straight, smooth, sound, thoroughly vitrified, salt glazed and free from any or all defects or injuries of a character or extent that would render it unfit for the service or load that would be imposed upon it from within or without. Said Zpipe shall give a clear ring when lightly struck with a mason's hammer. Said pipe shall be not less than two (2) nor more than three (3) feet in length. The thickness of the metal of which pipe shall be respectively as follows: For pipe having an internal diameter of nine (9) inches not less than thirteen -sixteenths (13116) of an inch. t For pipe having an internal diameter of twelve (12) inches not less than one (1) inch. All the material used in the construction of the improvement hereinbefore specified shall be of the best quality and of a kind especially adapted for the purpose for which it shall be used, and all necessary labor shall be per- formed in a good and workmanlike manner. The entire improvement hereinbefore provided for in this ordinance shall be constructed under the superintendence of the Board of Local Improvements of the City of Evanston. Section 2. That the recommendation of the Board of Local Improvements of the City of Evanston provid- ing for said improvement together with the estimate of the cost thereof made by the Engineer of said Board, f both hereto attached, be and the same are hereby approved. Section 3. That said improvement shall be made and the whole cost thereof including the sum of w ed thll4y�*fITO AM tW6*tY-%tW* hVftdV*dU* dollars ($ i MAM) ), being the amount included in the estimate of said Engineer hereto attached, as the cost of making, levying and collecting the assessment herein, be paid for by special assessment in accordance with an Act of the General Assembly of the State of Illinois, entitled "An Act Concerning Local Improvements," Approved June 14th, A. D. 1897, and the amendments thereto, and that said sum of EMWOO died thirtyfIT* and trwMty-tw* *OdtbS dollars ($ 335* 9 ), shall be applied toward the cost of making, levying and collecting such assessment. Section 4. That the aggregate amount herein ordered to be assessed against the property, and also the assessment on each lot and parcel of land therein assessed, shall be divided into fty* installments in the manner provided by the statute in such case made and provided, and each of said installments shall bear interest at the rate of six per centum per annum according to law until paid. Section 5. And for the purpose of anticipating the collection of the second and subsequent installments of said assessment for said improvement, bonds shall be issued payable out of said installments bearing interest at the rate of six per centum per annum, payable annually, and signed by the Mayor and by the Commissioner of Public Works, countersigned by the City Comptroller and attested by the City Clerk under the corporate seal of he City of Evanston. Said bonds shall be issued in accordance with and shall in all respects conform to the pro- isions of the Act of the General Assembly of the State of Illinois, entitled, "An Act Concerning Local Improve - merits," approved June 14th, A. D. 1897, and the amendments thereto. 5vo Section 6. That the Corporation Counsel be and lie is hereby directed to file a petition in the County Court of Cook County, Illinois, in the name of the City of Evanston, praying that steps may be taken to levy a special _assessment for said improvement, in accordance with the provisions of this ordinance and in the manner pre- scribed by law. , Section 7. That all ordinances or parts of ordinances conflicting with this ordinance be and the same are hereby repealed. Section 8. This ordinance shall be -in force from and after its passage. Adopted by the City Council of the City of Evanston on the llth day of September A.D. 192 3. Approved: Sept* 12, 19239 John F. Hahn, H.P. Pearsons, City Clerk. Mayor. M 0