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® 1 ance shall 'dred WINNETKA WEEKLY TALK, SATURDAY, MAY 2, 1925 27 (6) inches with lead and oakum joints, including two (2) six (6) inch cast iron water pipe bends. The necessary cutting shall be done to 'make the two connections to the existing mains, as more particularly shown on said plate No. 3, and the said joints shall be calked with lead and oakum, the trenches backfilled and the surplus ex- cavated material removed. There shall be provided sixty (60) cubic yards of sand for backfilling the said water pipe trenches. There shall also be provided two (2) six (86) inch iron body bronze mounted water gate valves of the Eddy type or its equal, set in the line of the said two hundred (200) feet of six (6) inch water pipe hereinabove provided for, as more particularly shown on said plate No. 3. There shall also be provided and in- stalled two (2) water gate valve vaults for the six (6) inch iron body bronze mounted water gate valves hereinabove provided for, constructed of Portland cement concrete, composed by. volume of one (1) part Portland cement, two (2) parts sand, and four (4) parts gravel or crushed stone, hav- ing. an internal diameter of four (4) feet, with side walls and bottoms six (6) inches in thickness and having a height of concrete over all of five (5) feet nine (9) inches. All necessary excavation therefor shall be made and all surplus excavated material remov- ed. The location and design of the said water gate valve vaults are more par- ticularly shown on said plates No. 3 and No. 5. There shall be provided and install- ed on the concrete wall of each of the valve vaults hereinabove provided for a cast iron manhole cover with rim and solid lid having a combined weight of rim and lid of five hundred forty (540) pounds with an average thick- ness of metal of one and one-quarter (1%) inches, and having a height of cover of nine (9) inches, with a diameter of lid of twenty-three (23) inches. There shall be grubbed out within the curb lines of the proposed im- provement for a distance of one (1) foot below the sub-grade of the pro- posed improvement where located six- ty (60) trees, including the removal of all stumps, branches and wood. The roadway herein provided to be paved shall be so graded that after being thoroughly rolled with a ten- ton self-propelling roller until the sub- grade shall be thoroughly compacted and after the paving material is placed thereon, the finished surface of said roadway shall be at the finished grades hereinafter shown on said Plates No. 1 to No. 6 inclusive. There shall be provided and used for the filling at the intersection of Willow Street and Church Road and in Church Road from the South line extended of Willow Street southerly to a line iwo hundred (200) feet south of Willow Street, and in Willow Street from a line one hundred seventy-five (175) feet east of the east line ex- tended of Forest Street to the west line extended of Church Road twenty- five hundred (2500) cubic yards of sand filling which shall be flushed with water. In the preparation of the sub-grade to receive the concrete pavement, brick pavement and integral curb herein provided for, there shall be excavated six thousand "four hundred (6,400) cubic yards of earth measured in the cut, including the removal of surplus excavated materials remaining after the completion of the construction of said pavements and curb. Due allow- be made for the salvage value of the pavement brick to be re- moved as excavated material. The depths and widths of the exca- vation required in the grading of the roadway to receive the said concrete and brick pavements and integral curbs shall be as shown upon the said plates No. 1 to No. 6 inclusive. The old combined curb and gutter where required to be removed shall be considered as excavated material, and the said roadway shall then be so cleared that after being thoroughly rolled and compacted with a ten-ton self-propelling roller, the sub-grade shall present a firm and even surface at the proper elevation to receive the proposed concrete and brick pave- ments and integral curbs at the grades established herein and as more par- ticularly shown on said plates No. 1 to No. 6 inclusive. When the said subgrade shall be prepared in the manner hereinabove provided for, there shall be construct- ed uvon said subgrade the reinforced concrete pavement, the brick pavement $d the integral curbs herein provided or. There shall be constructed upon the said subgrade twenty-one thousand five hundred (21,500) square yards (as measured from back to back of inte- gral curbs) of reinforced Portland ce- ment concrete pavement 'eleven (11) inches in thickness composed by volume of one (1) part Portland ce- ment, two (2) parts sand, and three and one-half (3%) parts gravel or crushed stone. The said Portland ce- ment concrete pavement shall be rein- forced with seventy-seven and four- tenths (77.4) tons of steel wire mesh. Said mesh shall weigh not less than 0.8 pounds per square foot of effective steel. The said steel fabric shall be uniform in character, fibrous, tough and ductile. Said steel shall have an ultimate tensile strength of not less than eighty-five thousand (85,000) pounds per square inch, The said re- inforcement shall extend to within two (2) inches of all joints, but shall not cross joints. Adjacent pieces of said * fabric shall be lapped four (4) inches when the lap is made at right angles to the center line of said pave- ment, and twelve (12) inches when the lap is made parallel with the center line of said pavement. There shall be provided and used in the construction of said reinforced concrete pavement thirty-seven hun- dred (3700) lineal feet of asphaltic felt transverse expansion joint filler ("Elastite" or its equal) one-half (1) inch thick and eleven (11) inches wide, spaced fifty (50) feet apart from end to end of said concrete pavement and extending from edge to edge of said pavement and normal to the center line thereof. There shall also be provided and used in the construction of said rein- forced concrete pavement twelve hun- (1200) three-quarter (3%) inch round, smooth steel transverse ex- pansion joint bars, each of said bars having a length of two (2) feet, one six (6) inch end of each of said bars shall be greased and to the six (6) inch end shall be fastened a cap of asphalt one-half (3) inch thick and one and one-half (1%) inches in dia- meter. The said bars shall be spaced three (3) feet six (6) inches apart. There shall also be provided and used in the construction of said rein- forced concrete pavement nine hun- dred fifty (950) three-quarter (34) inch deformed steel longitudinal joint bars and each of said bars shall have a length of five (5) feet and shall be spaced five (5) feet apart from end to end of said pavement. h ~~ There shall also be provided and formed in the construction of said re- inforced concrete pavement forty-five hundred (4500) lineal feet of trape- zoidal shaped longitudinal joint con- structed along the center line from end to end of said concrete pavement and extending from the top to the bottom of said pavement. The concrete on one side of said joint shall be painted with a hot asphaltic cement. There shall be constructed in con- nection with the improvement provided for in this ordinance ninety-one hun- dred (9100) lineal feet of Portland cement concrete curb, constructed in- tegral with, on top of and along the edge of said proposed concrete pave- ment, except where said concrete pave- ment shall join the existing pavements at Winnetka Avenue, Church Road, Willow Street, Ash Street, Cherry Street, and except along the westerly edge of said proposed concrete pave- ment for a distance of one hundred eight (108) feet, the southerly end of said one hundred eight (108) feet be- ing one thousand fifty-five (1055) feet northwesterly from as measured along the said westerly edge of said pro- posed concrete pavement from the north edge of the existing concrete pavement in Winnetka Avenue, the said omission of said one hundred eight (108) feet of curb being opposite the easterly end of a new street to be opened westerly of the proposed im- provement and connecting therewith and to be known as Sunset Road. The back of said curb shall be flush with the edge of the said concrete pavement and the body portion of said curb shall be composed by volume of one (1) part Portland cement, two (2) parts sand and three and one-half (31%) parts gravel or crushed stone. "The exposed surfaces of said curb to a depth of one-half (1%) inch shall be composed by volume of one (1) part Portland cement and two (2) parts sand. The said curb shall have a height of six (6) inches, shall be six and one-half (6%) inches wide at the top and nine and one-half (9%) inches wide where it joins the said pavement, and shall have an average width of eight (8) inches, and the exposed corners of the said curb shall be rounded. Open expansion joints one- half (1%) inch in width shall be left in said curb above all expansion joints in said concrete pavement. The loca- tion, size and design of said concrete curb are more particularly shown upon said plates No. 1 to No. 6 inclusive. The surface of the concrete pave- ment shall be struck off and brought to the established grade by means of a strike board or a lute. As soon as possible after concrete has been struck off, it shall be rolled with a hand roller having a smooth even surface approximately six (6) feet in length, not less than eight (8) inches in di- ameter, and weighing not less than one hundred (100) pounds. After the rolling has been completed, the surface of the pavement shall be finished by two (2) applications of a canvas belt eight (8) inches in width and two (2) feet longer than the width of the pavement. In the application of said belt, the flat eight (8) inch surface thereof shall be placed in contact with the concrete. The surface of the pave- ment for a distance of eight (8) inches on each side of the asphaltic felt-filled expansion joint shall be finished with a metal trowel and the edges of the joint shall be rounded with an edging tcol having a radius of one-quarter (%) inch, and the exposed joint sur- face shall then be given a brush finish. The said concrete pavement and curb shall be protected against rapid dry- ing by covering with ten (10) or twelve (12) ounce burlap, thoroughly wetted and laid directly upon the sur- face before the concrete has sufficiently set to prevent marring the surface. The burlap shall 'be kept continuously wet by sprinkling until the curing hereinafter provided for: shall be ap- plied to the said pavement. The twenty-one thousand five hun- dred (21,500) square yards of Port- land cement concrete pavement here- inabove provided to be constructed shall be cured by covering uniformly the surface of said pavement, using two and one-half (2%) pounds of flaked calcium chloride to each square vard of said pavement. ; There shall be constructed upon the said subgrade nine hundred (900) square yards of seven (7) inch thick concrete base to receive the brick pavement hereinafter provided for. Said concrete base shall be composed of a volume of one (1) part Portland cement, two and one-half (21%) parts sand, and four (4) parts gravel or crushed stone. There shall be constructed integral with and along the edges of the said concrete base of the brick pavement hereinafter provided for three hun- dred fifteen (315) lineal feet of Port- land cement concrete curb, except where said brick pavement shall join the existing brick pavement in Oak Street and the existing tar macadam pavement in Oak Street, where said concrete curb shall be omitted. The face and bottom of said curb shall be flush with and join the edge and bottom respectively of said concrete base. The said curb shall extend from the bottom of the said concrete base of said brick pavement to six (6) inches above the top surface of the said brick pavement at the edge there- of and said curb shall have a total height of eighteen (18) inches and the lower twelve (12) inches of said curb shall be eight (8) inches thick, and the top of said curb shall be seven (7) inches thick. The body portion of the said curb shall be composed by vol- ume of one (1) part Portland cement, two and one-half (2%) parts sand, and four (4) parts gravel or crushed stone. The exposed surface of said curb to a depth of one-half (1) .inch shall be composed by volume of one (1) part Portland cement and two (2) parts sand. Open expansion joints one-half (%) inch in width and fifty (50) feet apart shall be left in said curb. The said curb' shall also be divided into five (5) foot sections by closed joints and all exposed corners shall be rounded. Upon the concrete base hereinabove provided for, there shall be spread nine hundred (900) square yards of sand cushion one (1) inch in thickness to receive the brick wearing surface. Upon the said sand cushion herein- above provided for there shall be placed nine hundred (900) square yards, measured from face to face of integral curb, of vitrified brick pav- ing wearing surface four (4) inches in thickness. In the construction of said nine hundred (900) square yards of vitrified brick paving wearing sur- face, there shall be used nine hundred (900) gallons of asphaltic joint filler to be placed in joints between the brick and between the brick and the curb of said brick wearing surface. The brick for paving shall be of a kind known as repressed vitrified brick, and shall be thoroughly anneal- ed, tough and durable, regular size, and shall be evenly 'burned. When broken, the brick shall show a dense and stone-like body, uniform in color inside, free from lumps of uncrushed clay, lime, air pockets, cracks or marked laminations. Kiln marks or surface cracks must not exceed three- sixteenths (3/16) of an inch in depth. In size the paving brick shall not be less than three and three-eighths (33%) inches by eight and one-fourth (81) inches, nor more than three and five-eights (35/8) inches by eight and three-fourth (83,) inches. The edges of the brick shall be rounded, the radius of which shall not be less than one eighth (%) of an inch, nor more than one-fourth (%) of an inch. The brick shall have on one side raised letters or lugs, projecting not less than one eighth (3%) of an inch, nor more than one fourth (14) of an inch, so that when laid the brick will be sufficiently separated to allow the pavement to be well filled. All the brick shall be substantially the same size throughout the entire pavement. The paving brick shall be tested in a rattler twenty-eight (28) imches in diameter and twenty (20) inches long, inside measurements. The heads shall be composed of gray cast iron, not chilled or case hardened. The staves shall be made of one-half (1%) inch steel plates. There shall be a space of one-quarter (14) inch between the staves for escape of dust and small pieces of waste. The cross section of the barrel shall be a regular polygon, having fourteen (14) sides. The barrel may be driven by trunnions at one or both ends, or by rollers underneath, but in no case shall a shaft be passed through the rattler chamber. All tests shall be made on containing but one make of paving brick at a time. The paving brick charge shall consist of that number of paving brick whose combined volume most nearly amounts to fifteen (15) per cent of the cubic contents of the said rattler chamber. charges The rattler shall be revolved at a uniform rate of not less than twenty- eight (28) nor more than thirty (30) revolutions per minute for eighteen hundred .(1800) revolutions. Such paving brick shall be thoroughly dried before weighing for the test. The charges of paving brick to be tested shall be taken promiscuously from the paving brick proposed to be used in the pavement. No paving brick shall be selected for test that would be rejected by any other re- quirements of this ordinance. The number of paving brick per charge shall be ten (10 for all paving bricks as herein provided for. The paving brick shall be clean and dried for at least three (3) hours in a temperature of one hundred (100) de- grees Fahrenheit before testing. The said paving brick shall be capable of withstanding the above test without losing more than twenty (20) per cent of their original weight. The paving brick shall not absorb more than three (3) per cent of their original weight, after being submitted to the following test for absorbtion: three paving brick shall be broken in half and dried for twenty-four (24) hours in a temperature of not less than two hundred twenty-five (225) degrees, nor more than two hundred fifty (250) degrees Fahrenheit, and then tempered in distilled water main- tained at a temperature of not less than sixty (60) degrees nor more than seventy-five (75) degrees Fahrenheit for forty-eight (48) hours. The gain shall be caluclated in the percentages of the original weight of the dry pav- ing brick composing the test. Upon the said sand cushion pre- pared as herein provided, the paving bricks shall be laid perpendicular with the best edge up, the projections in one direction, and with the courses straight and at right angles to the curb line. All joints must be broken at least three (3) inches. After the paving bricks are laid, the end joints must be made close and immediately batted in at the curb line. Nothing but whole paving bricks shall be used, except in starting and finishing courses. All paving bricks when laid shall be clean and kept clean and en- tirely free from dirt or other foreign matter until pavement is completed. After the bricks in the pavement have been inspected and the surface of the pavement swept clean, the pave- ment shall be rolled with a tandem self-propelling roller, weighing not less than three (3) nor more than five (5) tons. Fortions of the pavement inaccessible to the roller shall be tamped to grade by the use of a hand tamper applied upon a two (2) inch board. After the final rolling, shall be tested with a ten (10) foot straight edge, laid parallel with the curb, and any depressions exceeding one-quarter (14) of an inch must be taken out. After rolling or ramming, the sur- face of the pavement shall be swept the surface clean and the joints between the brick shall be completely filled with an asphaltic filler at a temperature of between three hundred fifty (350) and four hundred fifty (450) degrees Fahr- enheit. The asphaltic filler shall be of the best grade which has been in successful use for such purpose for not less than two (2) years, and a filler free from coal tar, and be of such con- sistency as to have a penetration at thirty-two (32) degrees Fahrenheit of not less than two (2) millimeters when tested with a No. 2 needle \weighted with two hundred (200) grams for one minute. At one hun- dred fifteen (115) degrees Fahrenheit, it shall have a penetration of not more than eight (8) millimeters when tested with a No. 2 needle weighted with fifty (50) grams for five (5) seconds. Its melting point shall not exceed two hundred fifty (250) degrees Fahrenheit. All joints and edges of the brick shall be completely filled with the asphaltic filler, and if, after cooling, the joints are not flush and even with the surface, they shall be repoured. Immediately after the filling of the joints between the brick and between the brick and the curb of said brick wearing surface, the surface of said navement shall be covered with nine hundred (900) square yards of dry sand top dressing having a thickness of one-quarter (14) inch. The location, dimension, size, de- sign, and finished grade of the said concrete base, brick pavement and concrete curbs for the same, together with the details thereof, are more par- ticularly shown upon said plates No. 4 and No. 5. In the adjusting of existing macad- am pavement for connections, there shall be provided and used five hun- dred fifty (550) square yards of macad- am pavement, thirty-two (32) square vards at Willow and Forest Streets, ninety-four (94) square yards of said macadam pavement at Ash Street, ninety-four (94) square yards of said macadam pavement at Cherry Street, two hundred (200) square yards of said macadam pavement at Ridge Avenue, and one hundred thiry (130) square yards of said macadam pave- ment at Oak Street, to form connec- tions between the said existing pave- ments and the proposed pavements. In the said adjustment, there shall be used crushed limestone macadam twelve (12) inches thick bonded with four (4) gallons of Tarvia or its equal to each square yard of said crushed limestone macadam. The said macad- am pavement connections shall be thoroughly rolled with a ten-ton roller until firm and compact. The said macadam pavement conections when completed shall be smooth and con- tinuous with the existing pavements where constructed. In the construction of the improve- ment provided for in this ordinance, there shall be adjusted and replaced thirty-five hundred (3500) square feet of concrete sidewalk approaches, hav- ing a width of five (5) feet four (4) inches, one hundred thirty-five (135) square feet at Winnetka Avenue, two thousand sixty (2060) square feet at Willow Street and Church Road, four hundred forty (440) square feet at Ash Street, four hundred forty (440) square feet at Cherry Street, and four hundred twenty-five (425) square feet at Ridge Avenue. All of said con- crete sidewalk approaches shall be brought to the finished lines and grades of the proposed improvement where located. The said thirty-five hundred (3500) square feet of con- crete sidewalk approaches shall not include the two hundred twenty-five (225) square feet of concrete side- walk approaches hereinafter provided for and to be constructed at the westerly entrance of the pedestrian subway hereinafter provided for. All broken walk and surplus excavated material resulting from the construc- tion of said concrete sidewalk ap- preaches shall be removed. The id concrete sidewalk approach- es hereinabove provided for shall be constructed upon seventy (70) cubic vards of sand, composing a six (6) inch layer of said sand, to receive the said concrete sidewalk aproaches. There shall be excavated in the grading of the parkways one thous- and (1,000) cubic yards of earth meas- ured in the cut, including the removal of all surplus parkway excavation. The said parkways herein provided to be graded shall be the portion of said improvement between the easterly curb and the easterly line of said improve- ment, and between the westerly curb and the easterly edge of the westerly sidewalk along said improvement, or where there is no sidewalk, then to a line seven (7) feet four (4) inches easterly from and parallel with the westerly line of said improvement. The parkway in Willow Street shall be the portion of said improvement lying between the north curb of said Wil- low Street and the south edge of the existing sidewalk on the north side of said Willow Street, and between the south curb of said Willow Street and the north edge of the existing side- walk on the south side of said Willow Street. The south parkway in Oak Street shall be that portion of said improvement in Oak Street lying be- tween the south curb of said brick pavement and the south sidewalk in said street, and the north parkway in Oak Street shall be that portion of said Oak Street lying between the north line of the curb of the brick pavement and the north line of Oak Street. The parkways herein provided for within the lines of the proposed im- provement shall be graded, smoothed, hand-raked and cleared of rubbish, and shall have a uniform slope from the top of the curb herein provided for to the top of the existing sidewalk adjacent to said curb, and where there is no existing sidewalk, the said park- way shall be graded with a rising grade of one (1) inch vertical to twelve (12) inches horizontal to the easterly line of the proposed improve- ment on the east side of the pave- ment herein provided for, and to a line seven (7) feet four (4) inches easterly from the westerly line of the improvement herein provided for. There shall be constructed in con- nection with the improvement pro- vided for in this ordinance, a cable guard fence located in the easterly parkway at Willow Street, consisting of thirteen (13) square reinforced concrete guard posts, seven (7) feet nine (9) inches over all extending four (4) feet into the ground. The portion underground shall be ten (10) inches square, and the portion above ground shall taper from ten (10) inches square at the surface of the ground to eight (8) inches square at a height of three (3) feet six (6) inches above the ground. All exposed edges shall be bevelled and the top three (3) inches shall be finished off in a pyramid shape. Each post shall have two (2) three-quarter (3) inch galvanized malleable iron nut eye bolts with a cast iron washer, the shank of each eye bolt being imbedded in the concrete, spaced at eighteen (18) inches centers from a point nine (9) inches from the top of -the post. The said eye bolts shall have a three- quarter (3%) inch shank, and the in- side diameter of the eye in said bolts shall be one and one-half (1%) inches, and the length under said eye shall be four and one-half (4%) inches. The said posts shall be composed by volume of one (1) part Portland cement, two (2) parts sand, and four (4) parts gravel or crushed stone, and each of said posts shall be reinforced with twenty-four and four tenths (24.4) pounds of one-half (%) inch square steel deformed reinforcing bars. There shall also be constructed in connection with the improvement pro- vided for in this ordinance, one (1) square reinforced concrete guard post ten (10) feet three (3) inches over all, extending four (4) feet into the ground, the portion under the ground shall be ten (10) inches square. The portion above the ground shall taper from ten (10) inches square at the surface of the ground to eight (8) inches square at the height of six (6) feet above the ground. All ex- posed edges shall be bevelled. The top three (3) inches shall be finished off in a pyramid shape. Said posts shall have two (2) eye bolts as herein- above described, spaced eighteen (18) inches centers from a point three (3) feet three (3) inches from the top of the post. The said posts shall have a one-half (%) inch wrought iron con- duit pipe running through the center thereof from the top to the bottom for electric wiring. The said posts shall be composed by volume of one (1) part Portland cement, two (2) parts sand and four (4) parts gravel or crushed stone, and shall be reinforced with thirty-four (34) pounds of one-half (%) inch square steel deformed re- inforcing bars. There shall also be provided and in- stalled in connection with the said cable guard fence hereinabove pro- vided for two hundred twenty-five (225) lineal feet of three-quarter (3) inch diameter plow steel wire rope, composed of six strands of nineteen (19) wires each, and a hemp core, and twelve (12) drop forged steel wire rope clips for said wire rope. Said cable guard fence, including posts and other equipment, and the location and design thereof, are more particularly shown on said plate No. 3 and plate No. 5. There shall be constructed in con- nection with the improvement provided for in this ordinance one (1) pedestrian subway located as hereinabove provid- ed, and as more particularly shown on said plate No. 3 and plate No. 6. The said subway shall consist of re- inforced concrete side walls, reinforced concrete roof, reinforced concrete floor, reinforced concrete struts, reinforced concrete stairways, combined ventilat- ing shaft and safety island, vault lights, and ornamental concrete trim at entrance, plain concrete footings. The said subway shall be provided with wrought iron pipe hand rails, white enameled brick wall lining, storm water inlet grating with con- nections, and complete lighting sys- tem for said subway and safety island, concrete sidewalk approach, including the adjustment of the present twenty- four (24) inch storm water sewer in Willow Street, waterproofing and painting, all excavation and the re- moval of all surplus excavated ma- terial. The said subway shall be eight (8) feet six (6) inches in height in the clear at the westerly entrance, ten (10) feet in height in the clear from the floor to the ceiling, at the bottom of the stairway at the westerly end of said subway, thence decreasing uni- formly to nine (9) feet in width in the clear at the bottom of the stair- way at the easterly end of said sub- way. The height in the clear at the easterly end of said subway shall be eight (8) feet six (6) inches, and sald subway shall be ten (10) feet in width between the concrete walls and shall have a reinforced concrete roof twelve (12) inches thick directly under the proposed pavement, and a roof uni- formly varying from twelve (12) inches to eight (8) inches in thickness bevond the pavement. The said roof over the stairway shall be of rein- forced concrete five (5) inches thick, and the side walls of said stairway above the ground shall have an aver- age thickness of ten (10) inches and an average height of four (4) feet. The walls below the ground level shall be constructed of reinforced con- crete, and shall have a thickness of sixteen (16) inches and an average height of nine (9) feet. The said walls shall set upon plain concrete footings two (2) feet six (6) inches wide, with reinforced concrete struts, eleven (11) feet centers, and said struts shall be two (2) feet six (6) inches deep by three (3) feet in width. The fioor between said struts shall be five (5) inches thick and shall be constructed of concrete with wire mesh reinforcements weighing four- tenths (4/10) of a pound to each square foot. The stairways for said subway shall be constructed of rein- forced concrete with eleven (11) inch treads and seven and one-half (7%) inch risers. The walls of said subway shall be lined with white enameled brick to a height of seven (7) feet, measured from the floor of said sub- way. That portion of the inside walls of said subway above the enameled brick, and the ceiling of said subway shall receive two (2) coats of Shuron Cement Coating No. 60, natural gray, or its equal. : The location, dimensions, grades, de- sign, and details of construction of said pedestrian subway are more par- ticularly shown on said plate No. 3 and plate No. 6. In the construction of the said subway, there shall be ex- cavated eight hundred (800) cubic vards of earth, and said excavation shall have an average depth of nine (9) feet six (6) inches, measured in the cut, and all surplus excavated material shall be removed upon the completion said subway. : gt shall be provided and used in the construction of said subway two hundred five (205) cubic yards of con- crete composed by volume of one (1) part Portland cement, two (2) parts sand and four (4) parts gravel or crushed stone reinforced with twenty- two thousand sixty-six ~~ (22,066 pounds of deformed steel reinforcing bars. , : There shall also be provided and used in the construction of said sub- way ninety (90) cubic yards of plain concrete composed by volume of one (1) part Portland cement, three (3) parts sand and five (5) parts gravel r crushed stone. i is There shall also be constructed in connection with the said subway forty (40) cubic yards of ornamental con- crete trim composed by volume of one (1) part Portland cement, two (2) parts sand and three (3) parts gravel or crushed stone, reinforced with two thousand five hundred (2,500) pounds of deformed steel bars. There shall be provided and used for the outside surface of the concrete walls and roof hereinabove provided for as a part of said subway a quan- tity of Garden City Sand Company (of Chicago) brand of waterproofing paint known as "Marine Cement" or its equal, sufficient to paint the five hun- dred ninety (590) square yards of sur- face of the said concrete walls and roof with three (3) coats of said waterproofing paint, or its equal. There shall be provided and install- ed in the construction of said subway one thousand nine hundred thirty-six (1936) square feet of white enameled brick wall lining set in cement mortar composed by volume of one (1) part of white Portland cement and two (2) parts clean sharp sand. All joints shall be full, struck and neatly pointed. In connection with the construction of said subway, there shall be con- structed two hundred twenty-five (225) square feet of concrete sidewalk ap- proach to the westerly entrance of said subway. The said sidewalk ap- proach shall have an average width of ten (10) feet, an average thickness of four and one-half (4%) inches, and shall be composed by volume of one (1) part Portland cement, two (2) parts sand and four (4) parts gravel or crushed stone. The exposed sur- face of said approach to a depth of one (1) inch shall be composed by volume of one (1) part Portland cement and two (2) parts sand. All necessary excavation therefor shall be made and all surplus excavated ma- terial removed. ; There shall also be provided and used in the construction of said con- crete sidewalk approach five (5) cubic vards of sand for a sub-base for said two hundred twenty-five (225) square feet of concrete sidewalk approach. There shall be provided and installed in the construction of said subway seventy (70) lineal feet of two (2) inch inside diameter black wrought iron pipe hand railing with malleable iron fittings, which said hand railing shall be painted with two (2) coats of paint. : There shall be provided and in- stalled as a part of the electric light- ing system herein provided for said subway, two hundred seventy (270) lineal feet of one (1) inch steel duct conduit pipe, which shall be galvan- ized or Sheridized, seventeen (17) one (1) inch standard steel conduit bends, which shall be galvanized or Sheri- dized, one hundred sixty (160) lineal feet of No. 6 and two hundred ten (210) lineal feet of No. 10 rubber covered double braid single conductor copper wire, Brown & Sharpe gauge, National Electric Code, twenty (20) one (1) inch lock nuts and bushings, nine (9) four (4) inch square outlet boxes, which shall be galvanized or Sheridized, one (1) one (1) inch two (2) wire service head, which shall be galvanized or Sheridized for said No. 6 wire, with porcelain cover, twenty (20) one (1) inch pipe straps, which a lS ad a 5 PC EN rr i AEE al np at SM guia SRR Shp i fi a