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Resolution - 25RESOLUTION NO.��'' A RESOLUTION ADOPTING SPECIFICATIONS FOR THE CONSTRUCTION OF CEMENT CURBS, GUTTERS, SIDE- WA.LKS and MACADAM PAVETVMTT IN THE CITY OFATEST COVINA, CALIFORNIA, AS PROVIDED IN CITY ORDINANCE NO. 23. BE IT RESOLVED by the City Council of the City of West Covina that all curbs, gutters, side -walks, and macadam pavement constructed in the City of hest Covina shall be in accordance with the specifications hereinafter set forth, t,o-wit: CEMENT CONCRETE CURBS: 1. PLASTERED CURB: - Unless otherwise specified on the plans or in the ordinances the plastered type curb shall be constructed. ( a ) FORMS:- Planks used for forms shall be or a width equal to the full depthci' the curb and for a straight curb shall be not less than one and five -eights (1-5/8) inches thick after being surfaced on at' least orl.e side. Warped planks and planks not having a smooth, straight upper edge shall not be used. Front and back forms shall always be used. Rigid outside forms shall be provided for curb returns having radii up to and including fifteen (15) feet. Benders or thin plank farms rigidly placed, may be used on curves or for curb returns having a radius not specified above, or where there are grade changes in the return, or where the central angle is such that a rigid form having a central angle of ninety (90) degrees will not fit. Where the ad3oining sidewalk is not placed at the same time the curb return;is piaced, a back form must be used on the curb return, which may be a bender or thin plan4,.extending from the elevation of the top of the sidewalk to a depth of at least four (4) inches. All curb forms shall be constructed true to line and grade. The curb plank shall be held rigidly in place by the use of not less than five (5) pairs of iron stakes to each twenty foot section or curb, and other sections in proportion. -Clamps, spreaders and braces shall be used where required to make the curb forms rigid. All forms shall be set to conform to the dimensions of the curb. . (b) PLACING CONCRETE:- All forms and the sub -grade shall be thoroughly wetted immediately before any concrete is placed. Clgss O'B" concrete shall then be placed in horizontal layers not exceeding six (6) inches each in thickness, each layer being thoroughly tamped until free mortar appears on the surface. The forms shall be filled to within one-half (2) inch of the top. (c) EXPANSION JOINTS:- At the beginning and ending of all curb returns and twenty k20) feet therefrom, and at regular intervals along the curb of not more than fifty (50) feet, an expansion joint, one-half (2) inchthick and cut two (2)-inches wider than the full cross-section of the curb, shall be carefully set and rigidly held in a vertical position at right angles to the face of the curb, with its edge flush with the top of the curb. Where curb is built over a new fill more than three (3) feet in depth, an expansion joint not less than one -quarter (-&) of an inch in thickness and shaped to the cross- section of the curb, shall be set at every third block marking in the manner specified above. The joints shall be cut off flush with the face of the curb before final acceptance. (d) REMOVING FORMS:- The lapse of the time between the laying of the concrete base and the removing of the front forms shall be not less than one-half (2) hour-, nor more than two (2) hours. The back forms must be maintained in place until the finished coat is placed on the face of the curb. (e) FINISHIl�TG:- The finish coat, referred to herein, shall be iscomposed of Class "A" Mortar. Before the front curb form is removed and as soon as the concrete base has been thoroughly tam ed the top of the curb shall receive a finishing coat, one-half (J� inch in thickness. As soon as the forms are removed, the back and face of the curb shall be plastered with a finishing coat., one -quarter (*) inch in thickness, the muck to a depth of two ( 2 ) inches from the top of the curb and. the face to a depth not less than two t2) inches below the gutter line. There sidewalk joins the curb, it is not necessary to plaster the back of the curb. The finishing coat shall be well floated and trowelled into The body of the concrete so as to form one compact mass free from voids. It shall then be smoothly polished and marked, with joints vertical and at right angles to the face of the curb, into blocks of uniform "length not less than two and' one-half ( 22 ) feet, nor more than three and one-half (31) feet,, in length; a mark being placed at every point, where at expansion joint has been introduced. The marking is to be done with a tool which will leave the corners rounded off W. a radius of one -quarter (g) of an inch, and in such a way as to inure free movement of the concrete at the points where expansion joints have been introduced. The top edges of the curb shall be rounded to a radius of three-quarters (3/4) of an inch. The top of the curb shall be finished on a slope, the back edge being one -quarter (4) of an inch higher than the front edge. The finished curb most show a true, straight face and top of uniform. width, free from humps, sags or other irregularities. When a straight edge five (5) feet long is laid on the face or top of the curb, except at grade changes or on curves, the surface shall at no place vary more than one -quarter (4) of an inch from the edge of the • straight edge. (f) GARAGE or DRIVEVTAY ENTRANCES: In constructing the concrete curb the Contractor shall provide entrances -for garages or drl.veways where designated by property owners, providing the request is made before the curb is poured. Said entrances shall be of such length as designated by the City Engineer and of a depth from the curb grade of one (1) inch less than the curb face. The top of the curb at entrances or driveways.shall be finished on a slope, the back edge being three-quarters (3/4) of an inch higher than the front edge. Cg) CONTRACTOR*S N,01E W�B:-atTie Contractervals ornshall ot stamp anhis name and the year built on eCurb one hundred (100) feet. The letters shall not be smaller than three-quarters C3/4) of an inch in height and shall be impressed into the curb to a depth of one -quarter () of an inch. -2- (h) PROTECTION AND CUR MG: The completed curb shall be protected (untiil accepted) from damage by accident, traffic or otherwise. The back and top of the curb shall be covered with not less than two (2 ) inches of earth or sand and wet, by noon of the (fay f-ollowing completion, and must be kept covered and wet for at least ten (10 ) days thereafter. M BACUILLIi;G:- After curing, backfi.iling must be made to fh.e elevation of the top of the curb, and to such a distance out or to such a width as .is sn own on the plans. (j) REPAIRS AND REPLACMMITS:- The Contractor shall repair all curbs, sidewalks and gutters damag:ed.during the construction of curb. . there any curb requires repairs before acceptance, the repair shall be made by removing and replacing the entire curb between socring :lines, and not by refinishing the damaged portion. Where the plans provide for reconstruction of existing curb, and the limit of new work specified does not fall on a socring line, the entire section shall be removed and the new curb shall join the old curb at vhe first scoring line beyond said specified limit. II: L71PLASt"ERED CURB:- Unplastered curb shall be constructed in accordance with tbLe foregoing specifications for plastered curb, with the following modifications: (a) FOR113:- Benders or thin plank forms, rigidly placed, may be used in place of rigid outside forms for all curb returns in case monolithic curb and getter is to be constructed, otherwise forms shall meet the requirements, as here:inbefore specified, for those for plastered curb. (b) PLACING:- The concrete shall be thoroughly spaded away from the forms with a spade or. similar tamping tool until there are no rock pockets at, either form. The forms shall be filled to the top. (c) Rr-'I OVING FORMS : - The front form shall not be removed in less than two k 2) hours or more then six (6) hours. The front Form should be removed by lifting it up, parallel with the._face of the curb then out, instead of pulling it out first. Forms must be maintained on the rear of the curb until the face of the curb is finished. • (d) FDTISHING:- Immediately after stripping the front forms, the curb shall be troweled. Grout composed of one (1) part of cement and.one (1) part or finish mortar sand shall then be applied to the face of the curb to a depth or not ia:ss than two (2) inches below the gutter line, except wher6 monolithic curb and gutter is being constructed, in which case the grout shall be applied to such a depth as is necessary to meet the gutter. The curb shall then be trowled smooth, edged on top and jointed and given a final fine brush finish. The top edges of the top of the curb shall be rounded to a radius of three-quarters (3/4) of an inch, unless otherwise shown on the plans. -3- Ili. ARMORED CONCRETE CURB:-- when armored concrete curb is snown on the plans so be constructed, it shall be constructed in precisely the same manner as specified above, except that proper provisions shall be made for the insertion of the armor. The armor shaii conform to the design and the specifications for Curb Armor shown on the plans. The armor shall be accurately placed on the edge of the'curb and shall connect smoothly with the top and sides. On all armored curb, the armor shall be herd in place by means of suitable clamps until the concrete is hard. As soon as the fonts are removed, all projections shaii be rubbed down and the armor cleaned to the satisfaction of the City Engineer. Expansion joints shall be constructed as provided for under the above concrete curb. CEIt1iENT CONCRETE SIDEWALK. 1. TWO COURSE SIDEWALK: Unless otherwise specified on the plans or in the ordinances the two course type sidewalk shall be constructed. (a) FOMAS: Forms for concrete sidewalk shall be set rigid and true to line and grade. Strips used as forms at the sides of the walk shall be of lumber at least two (2) inches in thickness, or of steel of equal strength, except on sharp curves, where fla xible strips may be used. All.strips shall have a smooth, straight upper edge, and shall be of a width equal. to the full depth of the sidewalk. Forms shall not be removed in less than twelve (12) hours after the sidewalk has been finished. (b) PLACING CONCRETE: All formi.s and the sub -grade shall be thoroughly wet before any concrete is placed. A layer of. Class "C" concrete for the lower course of the sidwalk shall then be spread and thoroughly tamped until free mortar appears on the surface, making a compacted mass of not less than the thiekne.-ss of the base as shovm. on the plans. The surface of the concrete must be smooth and u.nifojm- and shall be tested as to grade with a gar.ge notched at each end and extending one-half (2) inch below the top edges of the side forms, unless shown otherwise on the plans. (d) CONSTRUCTION JOINTS: Open joints shall be constructed in the sidewalk at intervals of twenty (20) feet. This shall be done by seating three -sixteenths (3-16) inch..steel plates and withdrawing them after the concrete has been temped into place. These plates shall be cleaned and oiled between using. They shall: be carefully set and rigidly.held in position as forms and flush with the finished surface. Their location shall be marked on the side forms, and after the si,dewall� has received its final finish these . joints shall be opened by the use of a special jointer tool, having a cutting blade at least one (1) inch deep and one -eighth (1/8) of an inch thick, which will separate the mortar of these joints one -eighth (1/8.) of an inch, and round the adjoining edges to a radius of one - quarter (X) of an inch leaving the joints in a neat workmanlike condition. -4- (d) EXPAMION. TOINTS: At intersections expansion joints one- half (4) inch thick shall be placed along the produced property lines providing there is a sidewalk butting up against it. Expansion joints one-half (1) inch thick shall. be placed between the curb return and intersection sidewalk that butts up against the curb return. Expansion joints one-half (J) inch thick shall oe placed every one hundred (100) feet at right angles to the property line along the line of new sidwalk constructions. The expansion joint shall be flush with the top surface of the sidewalk. Expansion joints one -quarter of an inch thick shall be placed around all poles, meter boxes, etc., against which it is necessary to place concrete. (e) FI1 ISHING: Immediately after the concrete for the base has • been placed, as herein described, the finishing coat, composed of Class "A" mortar, shall be applied. The lapse of time between the laying of the concrete base and the application of the finishing coat shall be not more than forty-five (45) minutes. Sufficient mortar shall be used to produce'a.finish coat of a thickness in no place less than one- half (!) inch, unless otherwise shown on the plans. The surface shall then be troweled smoothly into the body or the concrete base so as to form one compact mass free from voids, and shall be smoothly polished. Preliminary troweling may be done with a long handled trowel or "fresno" but the final surface must be made with a hand trowel. . The surface .shall then be marked into uniform rectangles not more than four (4) feet on a side. Sidewalks exceeding six (6) feet in width shall be marked into uniform rectangles not more.than twenty (20) Inches nor less than sixteen (16) inches on a side. A marking shall. be placed acruss the walk at every point where an expansion joint or construction joint has been introduced; The marking shall be done with a tool which will leave the corners rounded, and in such a way as to insure free movement of the concrete at the joint. The finished surface shall show no travel or other marks, and shall be true, so that when a five (5) foot straight edge is placed on the surface at any position, said surface shall not vary more than one - quarter () of an inch from the edge of the straight edge, except at grade changes. (f) FLOAT FINISH ON GRADES: On grades of five (5) per cent or over, after the finish coat has been troweled as hereinbefore described, it shall d.e broomed at right angles to the side forms before being edged or marked into, rectangles. (g) CONTRACTOR'S NAME ON SIDEWALK: The Contractor shall stamp 10 his name and the year built, in the sidewalk at intervals of not more than one hundred (100) feet. The letters shall not be less than three-quarters (3/4) of an inch in height, and shall be impressed to a depth of one -quarter (4.) of an inch. (h) PROTECTION AND CURING: The completed sidewalk shal.i be protected (until accepted) from damage by accident, traffic or otherwise. Sidewalk shall be covered with earth or sand to. a depth of two (2) inches and wet by noon of the day following completion and mutt be kept covered and wet for ten (10) days thereafter. (i) REPAIRS AND REPLACE�TIMITTS: The Contractor shall. repair all curbs and sidewalks damaged by him during the construction of sidewalk. Where any sidewalk required repairs before acceptance the repairs shall be. made by removing and replacing the entire sidewalk between scoring -5- lines, and not by refinishing the damaged portion. Where the plans provide for reconstruction of exisiting sidewalk and the limit of new work specified does not fall on a scoring line, the entire section shall be removed and the new sidewalk shall join the existing sidewalk at the first scoring line beyond said specified limit. II. ORIE COTMSE SIDEVIALK: (a) FORMS: Forms of one course sidewalk shall conform to the specifications of forms for Two. Course Sidewalk. The depth of side forms snall be at least three (3) inches instead of three and one -hale' (31) inches as described for 'llwo- . Course Sidewalks. • (b) PLACVG CONICRETE: All fo:rm._s and the suo-grade shall be thoroughly wet before any concrete is placed. The concrete shall be composed of Class "B" concrete of a plastic consistency with a slump of not to exceed two (2) inches, when tested for the same. The thickness after completion shall be three (3) inches. After the ccn:crete has been placed between the forms it shall be struck off with. a steel shod gauge. Where the width of the sidewalk is six (6) feet or less, the gauge shall be arched upward at least one -quarter (J) inch and the highest part of the arch shall be located one-fourth (0 of the width of the sidewalk.from the high side. After, finishing, the -top of the widewalk shall not be below a line stretched between the tops of the side forms. It shall then be tamped with a heavy tamper, preferably one having a face consisting essentially or a grid composed of paralleled metal bars, until at least three -eighth (3-8) of an inch of the mortar has.been brought to the surface. The concrete shall then be tamped with a light tamper, preferably one, the face of which is composed of a wire screen having a square opening not less than one -eighth (1/8) inch, nor more than one-fourth ('J) inch in size, until all waves and.ather irregularities in the mortar surface caused by the heavy tamper have been eliminated. Any other medium may be used which will accomplish the same result; that is, the bringing of not less than three -eighths (3-8) inch of' mortar to the surface. (e) EXPANSION JOINTS: Finishing, .Float Finish on Grades, Contractor's name on sidewalk, Protection and Curing and repairs and Replacements shall conform to the specifications or the Tejo Course Sidewalk, except no finish Class "A" mortar shale-1 be used. Instead Lamp Black shall be sprinkled on the mortar, brought to the surface by • the tamping to give the sidewalk a color satisfactory to the city engineer. CE% � ITT CONCRETE GUTTER. (a) FOMIS: For concrete gutter shall be set true to line and grade. Forms shall be of lumber at lease two (2) inches in thickness or steel of equal strength, except on sharp curves where flexible strips may be used. All forms shall have ' straight upper edges and shall be of a width equal to the full depth of the finished gutter. The forms must be held rigidly in place by stakes placed not more. zhgn five (5) feet apart on the outside of the rorms and set flush with the top surface of same. Forms shall not be removed in less than tweAVe (12) hours after the gutter has been finished. N (b) KdWING CONCRETE: All concrete for roadway between street intersections shall be specified, and all concrete for cross -gutters otherwise specified. gutters parallel to the Class "B" unless otherwise shall be Class "A" unless All forms ead the sub -grade or base shall be thoroughly wet before any concrete is placed. A layer of concrete shall then be spread and thor• oughiy tamped until free mortar appears on the surface, making a compacted mass of not less than the thickness shown on the plans (c) EXPANSION J-QI ?TS At the beginning and ends of all curb returns and twenty (20) feet therefrom, and at regular intervals along the gutter Qf not more than fifty (50) feet, an expansion joint, is one-half (1) inch thick and extending the full depth and width of the gutter,, shall be placed at right angles to the surface and to the edge of the gutter, and flush with. the top surface of same. (d) r'INISHMG: The surrace of the gutter shall be brought to a true, even grade with a smooth, granoiithic or float finish, by the use of wooden floats and a straight edge no-t less than twelve (12) feet long. The finished surface shall be edged and marked Into - sections of more uniform length, not less than two and one -hatf (21) feet, nor more than three and one�ialf (3l-) feet in length, said markings to be at right angles to the edge , of the gutter, and continuous with. those on the curb. A marking shall bye placed where an expansion joint has been introduced. The marking is to be done with a tool which will leave the corners rounded off,: and in such a way as to insure free movement of the concrete at the points where expansion joints have been introduced. The gutter shall be troweled smooth for a width of two (2) inches along the outside edge and along each side of the markings, and also along the inner edge for a space of two--(2) inches from the intersection of the curb except where . monolithic curb and gutter is to be constructed, in which case tti.e ed4je of the gutter next to the curb shall be constructed as shown on the plans and shall be finished in such a manner that it will confozm in appearance with the adjacent curb and gutter... The outside edge of the gutter shall be rounded off to a radius of one-half (Q) inch. The finished gutter must show a true surface free from lumps, sags or other irregularities. When a straight. edge twenty (20) feet long is laid on the surface, except at grade changes or curves, the surf -ace shall at no place vary more than one -quarter (4) of an inch from the edge of the straight edge. •(e) CLEANING ADJOINING CURB: If the concrete gutter is constructed against co•ncret-e curb, all concrete spilled on the top and face of the curb must be removed and the curb cleaned before the concrete gutter has been given its final finishing and edging. (f) CONTRACTOR'S HAME ON GUTTER; The Contractor shall stamp his name, and the year built, in the gutter at intervals of not more than one hundred (100) feet. The letters shall not be less than three- quarters (3/4) of an inch in heights,, and shall be impressed to a depth of one -quarter (g) of an inch. (g) PROTECTION AND CURING: The completed gutter shall be protected (until accepted) from damage by accident, traffic or other- wise: Gutters shall be oavered with earth or sand to a depth of two (2) inches, and wet, by noon of the day following completion, and must be kept covered and wet for ten (10) days thereafter. -7- (h) REPAIRS AND REPL:kCMMNTS:. The Contractor shall repair all curbs and gutters damaged during the construction of gutters. Where any gutter requires repairs before acceptance, the repair shall be made by removing and replacing the entire gutter between scoring lines and not by refinishing the damaged portion. Where the plans provide for reconstruction of existing gutter,, and the limit of new work specified does not fall on a scoring line, the entire sectf on shall be removed and the.new gutter shall join the existing gutter at the first scoring line beyond said specified limit. 12 INCH OILED MACADAM PAi£EP4CE T. (a) VASE COURSE:— *I* SPREADING ROCK:— A layer of No. 2 crushed rock shall be uniformly spread upon the dampened sub —grade or base to the width indicated on the plans and not Less than twelve (12) pounds of. No. 2 crushed rock to the square foot of the surface covered. The spreading of the rock may be by hand or by mechanical spreaders, but: whatever the method, care must be taken to insure that the thickness of the spread is uniform throughout its length anal width,, and that the various fragments of the rock are well mixed and in no case segregated. The crushed rock. shall not be read upon the sub -grade f or a greater distance than one —quarter (g, of a mile ahead of the first application of oil,. it: being the intent: of this specification that the - loose rock be not unduly exposed to injury or damage from traffic, dust or storm water, and that: the work be finished as shortly .as possible after spreading. 2; ROLLING:— Immediately before the rolling of the No. 2 rock, the rock shall be thoroughly broomed with a. stiff,` wire broom of a design satisfactory to the City Engineer. After the rock is spread and broomed as specified the layer shall be rolled with a properly operated stand$rd three (3) wheel macadam type roller weighing not less than twelve (12) tons exclusive of fuel and water, and having a compression of not less than flour hundred (400 ) lbs. per inch width of tire. All rollers must be powered by steam or 4 cylinder internal_ combustion engine. Rolling shall be commenced at the edge of' the spread layer, the driving wheel of the roller lapping one—half (2 ) its width on the shoulder where shoulders have been constructed or at the edge of the gutter, and the roller following the same track until the.edge of the course is fastened against any side movement from further rollowing. The edge being fastened the rolling shall. be continued by (6) inch set -ins or laps until the center of the spread course is reached. The roller sixall then be started from the other edge and in a like manner worked to the center of the course. Rolling must be continued until the crushed rock is bedded, -bonded and mechanically locked and until no movement of the stone base can be seen as the roller passes over the layer and until the surface is true and uniform. During the process of rolling any high spots or depressions that develop shall promptly be remedied by removing or adding rock as may be required; rock so added being of the same size as that composing the Layer. As an aid in consolidating the rock it may be watered bu the amount of" water used must not be such as to wet the sub —grade. The roller. must at all times be operated on lines parallel with the center line of the pavement and no material variations from such will be permitted. Changes in the direction of its movement must not be conterminous. The roller must not be allowed to stand on the layer before the crushed rock has been properly consolidated. 3. OILING::- After the layer of crushed rock has been rolled as described above the surface shall be lightly watered. Then in not less than thirty (30) minutes nor. more than one (1) hour thereafter there shall be applied asphaltic cement or asphaltic oil of the grade designated on the plans for the wori. It shall be uniformly applied at the rate of one-half (2) gallon per square yard of surface covered, unless otherwise shown on the plans. (b) SECOND COURSE AND WEARING SURFACE:- 1. SPREADING ROCK:- Immediately after the asphaltic cement or asphaltic oil is spread on the base course it shall be rolled with a 4 0broom (10)ton tandem roller then No. 4 crushed rock shall be spread over oil surface in a uniform layer of" not less than four (.4) pounds to square foot of surface covered and shall be thoroughly broomed with satisfactory to toe City Engineer and thoroughly rolled. This layer of crushed rock. shall be spread and made parallel with the finished grade and cross-section. 2. DOLLING:- Rolling shall be done in the same manner as descri-bed for the base course, except it shall be single rolled. 3. OILING:- After the seeand course of crushed rock has been rolled, there shall be applied asphaltic cement: or asphaltic oil as designated on the plans. The asphaltic cement or oil shall be uniformly applied at the rate of one -quarter (4) of a gallon per square yard unless otherwise shown on the plans. Then roll with an eight (8) or ten (10) ton tandem roller to take out. all irregularities. (c) FINISH COURSE:- 1. SPREADMG ROCK:- Immediately after the second application of the asphaltic cement or, asphalt-ic oil has been rolled, No. 5 crushed rock or gun sand at the rate of not more than two (2) pounds to the square foot of surface covered shall be spread in sufficient quantities to absorb all surplus oil and produce a uniform surface. The surface shall then be thoroughly rolled and broomed until it. becomes hard, smooth and free from any irregularities. Rolling shall be done with an eight (8 ) or t:en (10) ton tandem roller. 2. FINAL. OILING:- After the finish course has been broomed and rolled, emulsified asphalt at the rate of one -quarter (4) per square yard of surface covered shall be applied. The emulsified asphalt shall conform �o specifications for emulsified asphalt. The final application of oil hall be rolled with an eight (B) or ten (10) ton tandem roller. (d) CLEANING UP.- Before the work will be considered in accordance with these specifications,, the street must be placed in a neat and orderly condition and all construction debris and surplus materials must be removed from the street: -9- STATE QF CALIFORNIA, COUNTY JF LOS ANGELS, CITY OF WEST COVINA. I, C. C. TOLAND, City Cle-rk o-f the City of, West Covina, hereby certify that. the foregoing resolution was adopted by the City Council of the City of Kest Covina at the regular meeting of the said Council on the 13th day of April, 1936, and signed by the Mayor or said City, and that t e said resolution was adopted by the fallowing vote: AYES: NOES: ABSENT: a