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HomeMy WebLinkAboutResolution No. 1172RESOLUTION N0. �?! A RESOLUTION OF. THE CITY COUNCIL OF THE CITY 'OF AZUSA ADOPTING SPECIFICATIONS NO..2.(NEW SERIES) FOR THE CONSTRUCTICN OF•MACADAM PAVEMENT, CENTRIFUGALLY,CAST'IRON WATER`PIPE, STANDARD STEEL SCREW PIPE, GATE VALVES, FIRE HYDRANTS AND APPURTENANCES WITHIN SAID CITY. BE'IT RESOLVED by the City Council of,.the City. .of Azusa that'the foiloTing specifications, -to be known•as Specifications No. 2 (New.Ser.ies), for the'.constructIbn of ,macadam pavement, centrifugally cast.'iron,water.pipe, standard steel screw pipe, IT 4 - gate valves')' -fire hydrants and appurtfnances, in the City of Azusa, be, and the.same are, hereby adopted.. 'WORK' TO BE DUNE Under. these Specificaiions.the Contractor will be required; 1. 1 To excavate or fi11�in to:such, an extent and in such.a manner as may be required by the, plans, profiles and cross sections and these specifications.the area'upon which 'the. improvements here inafter.provided for .are to.be constructed; 2. To' furnish 'all,materials as oereinafter provided for and required for the construction and compLetion.of the improvements in accordance with.the plans.and specifications, and all labor, tools and equipment necessary for the performance of said work; 3. To. grade, and .construct macadam pavement, centrifugally cast iron water, pipe; standard steel screw pipe,.,,, -gate valves, fire hydrants and appurtenances etc.,.as he',einafter-specified. GRADING Grading sh=•.11 include all filling, the ro,noval of all earth, sEaid, stone or all other materiel of whatever nature it imay be that may be encountered in preparing the road or street, and which also includes all trimming and shaping required to bring the surface of the road or street to gr -.dc and cross section. When mud or other soft material is encountered, it shall be taken out and the space filled with good earth, sand or gravel, which, if it is earth or gravel,shall be rolled uiztil the surface of the foundation ceases to creep in front of the roller. The Contractor, however, will not be required in such cases to excavate mud or other soft ;material to a. depth greatcr th .n two (2) foot below the subgrade. All fillinE shall be done with good, sound earth, grc;vel or sand. %nonever a fill is to be m dr. of earth or gr-vel,the embankment shell be brought up in layers not exceeding twelve (12) inches in dep.-ch, and each layer thorou.-;oily da::ipened and rolled with a. roller not loss than t,,,o hundred (200) pounds per lineal inch of tire until it is firmly coi::pacted, or the fill, if made of earth may be brought up in layers not to exceed two (2) feet in thickness, each layer being diked and filled with ?rater to settle and compact the same, this method to be repeated with each layer until brought to gre.de. The final layer, after drying out but while still in daLip condition, shall be rolled with a roller as herein provided, until fir';ly compacted. Amen the fill is rude with sand, it shall be brought up to grade and co:apacted by thoroughly getting the fill. No material of a perishable, spongy or otherwise im- proper nature shall be used in filling. The space over which fills are to be made sh,M first be cleared of -all brush, timber, weeds, trash or other debris unfitted for foundation, and then thoroughly plo^ied and broken up to allow nes^ and old material to unite and bond together. During the process of grading, t' -Ie rocd or street shall be maintained in a reasonably good condition for traffic, care being t, --ken to remove the surplus material as evenly as possible over the entire surface of the road or street. Any street intersecting tho street in which the 7ork is being done may be closed at any time, provided that the closed streets are not next to each other, and that oach alternate street crossing is kept open. Vhen constructinc emban'_.mments, the teams or trucks shall be made to travel as evenly as possible over the whole surface of each layer, both coming and going. The formation of well defined ruts is specially prohibited. Clods or hard lumps of earth larger than six (6) inches in greatest dimension shall be broken up before being placed in embankment. The embankment shall be carried to such height above grade, and to such increased width as may be necessary to provide for shrinkage and campression, and they must be maintained by the Contractor at ther.roper height, dimension and slope until the wort; is finally accepted. The width of the road or street to be graded shall conform to the plans, profiles and cross sections, .- 2 SUBGR:1Dn . :after a section of road or street has been graded as herein specified, the surf[•.cc shall be thoroughly drenched with water, end when sufficiently dry shall. be cultivated and rolled with s. roller weighing not less than four hundred (400) pounds to the lineal inti: twidta of tire, until the surface is unyielding. Depressions made by roiling shall be leveled up with good earth and ar-ain rolled. Such portions of the road or street that cannot be reached by the roller and all places excavated belo�R sub,;rade and refilled, and all pipe trendies and other places that cannot be properly compacted by the roller shall be hand- te_::ped until solid and unyielding. In cc.ses of wet weather, or soft or muddy ground malcing use of the roller unsafe or impracticable, the rollinE shall not be undertdcen ur_til the Found has become sufficiently dry. If the cubgrade consists of surd, it shall be compacted by wetting down thoroughly „nd smocthed to conform to cross section. The Contractor shall notify the Fngineer wren a section has been brought to subgT_.de ?Then the latter till check the elev^ Uions of the samo, 011d if the *.vorll is fo-and to be in accord- ance ,rith the specificctions an grc.des given, the Contractor shall proceed as hereinafter mmtioned.. 0 CENTRIFUGALLY -CAST IRON PATER PIPE I. TYPE, CLASSES AWD SIZES. Pipe shall be furnished. in bell end. spigot type, Pith or without bead unless ot'_icrwise specified, r;it'l lead groove in bell, and in the following classes: Class I 150 pound press=,-- IT 250 pound pressure II. COATING. Unless otherwise specified, all pipe shall be completely coated inside and outside with coal tar pitch varnish, to which sufficient oil shall be added to make a smooth coating, tough and tenacious when cold, not "tacky" and not brittle. III. MATERIAL AND WORKJANSHIP. All pipe shall be :rade of cart iron of good quality, and of such charactor as s'.:a.11 r..ako tho pipe strong, tough and of even grain, and soft onougl: to satisfactorily admit of drilling and cutting. Each pipe shall be smooth, free from cold shuts, scale, lumps, blisters, send holes and defects of every nature chich unfit it for ti:e use intended. i:t shall be straight, and shall be true circles in section_ with its inner and outer surfaces concentric. No plugging, filling, or burning in will be allowed. IV. GENERAL REQUIRFXF,'•`TS . 1. Casting. - All pipe shall be cast centrifugally in machines. A record of the melting and pourin„ temporatures of the iron shall be furnished the inspector, when requested. 2. Ch.emicE.l analysis shall be made by the manufacturer from each heat to dcterminc graphitic and combined carbon or total carbon if the separate determinations arc riot available, manganese, phosphorus, sulphur and silicon, and duplicate topica of test reports shall be furnished the inspector. Sulphur shall not exceed 0.10 per cent and phosphorus 0.90 per cent in either ladle or inspection analysis. 3. Annealing. - Pipe cast in motal contact molds, after withdrawing from machines, shall '.De annealed to meet the hardness limits designated under "Inspection and Testae. Pipe cast in sand lined molds, and stripped while showing color of heat, shall be placed in an oven, and shell not be removed therefrom until cooled to 5000F. or under. 4. Lengths. - Pipe shall have c. nominal laying length of 12 ft., 16 ft. or 16 ft. 4.85 inches (5 meters). Not more than 10 per cent of cut pipe shall be accepted. Such cut pipe shall be no more than one foot under nominal laying length. S. Tolcra.nccs in Diameter. - The inside diameters of the bells and the outside d.ias^,eters of the. spigot ends of pine, exclusive of bead, shall not vary plus or minus from ti]e tabulated dimensions by more thLn 0.03 inch for pipe 12 inches and less in no;final diameter, and 0.08 inch for pipe 14 inches and over in nominal diameter. • * 0 of . • r W 6. Tolerances in Thickness., - The tolerances in thickness, plus or minus, shall not exceed those listed below. Nominal diameter Tolerance, plus or minus, in inches inch - - - - - - - - - -• - - - - - - - - - 4 0.04 6 .045 8 .05 10 .055 12 .06 14 to 20 .08 For all sizes of pipe, tolerances not exceeding 0.02 inch additional to above will be allowed for spaces not exceeding 8 inches in length in any direction. 7. Tolerance in weight. - The weight of no single pipe shall be less than the nominal tabulated weight by more than 5 per cent. 8. Cleaning. - All pipe shall be thoroughly cleaned, and any rough spots in bells or on spi,;ot ends shall be raooved by grinding before coating or lining. 9. Physical Requirements. - Pipe shall conform to physical requirements as given in Section V, paragraphs 5, 6 and 7. V. INSPECTION AND TESTS. 1. The contractor shall furnish the inspector, free of cost, such facilities as may be necessary for the performance of his work. 2. The inspector shall have free access at all times to all parts of any manufacturing plane, which concern the manufacture of the material ordered. 3. All handling of material, sampling, preparation of test specimens, and testing thereof, except chemical analysis, shall be performed or furnished by the contractor without expense to the City. 7hc re the manufacturer has no facilities for Making tests or analyses required, they will be made at some suitable place in the vicinity, at the contractor's expense, and in the presence of the inspector. 4. All pipe shall be subjected to a careful surface inspection, and hammer and rolling tests. All bells shall be tested by circular ge.ges and no pipe will be accepted which is deficient in joint room. 5. Tests of material. - From each 300 lengths of pipe, or fraction thereof, of each size in the contract or order, 1 length of pipe shall be selected by the inspector before coating. From each sample pipe there shall in cut and machined one test strip 12 inches long, 0.50 inch deep, and the full thicknces of the shell in width. This shall be tested as a bo*2 (with machined surfaces top and bottom) on supports 10 inches apart with load applied at two points 3 1/3 inches from the supports. The strip shall be accurately calipered at point of rupture and stress calculated by the formula .S. S = Plc 6I ;the secant modulus of elasticity at tae breaking load, shall be calculated by the formula E = 23P13 -i2-99-IY -In these formulas ulus of RuPture E _ uoodulus of Ele-sticity P = Total load 1 = Length of Spar.. c = Distance to E)?treme Fibre I = Loment of Inertia y = Center Deflection at Load I For pipe cast in metal contact machines the secant modulus of elasticity shall not exceed 15,000,00Ci pounds per square inch, with the corresponding modulus of rupture not less than 40,000 pounds per square inch. For pipe cast in sand contact machines the secant modulus of elasticity shall not exceed 10,000,00() pounds per square inch, with the corresponding modulus of rupture not less than 35,000 pounds per square inch. 6. Hydrostatic tests. - Eaoh length of pipe 12 inches in diameter and less shall be subjected to a hydrostatic pressure of 500 lbs. per sq. in. and 14 inches in diameter and over to a hydrostatic pressure of 300 lbs. per sq. in. The pipe shall be under this pressure at least one half minute, and while under pressure shall be subjected' to a hammer test. Any pipes showing defects by leaking, sweating, or otherwise, shall be rejected. 7. Rockwell Tests. - Upon the machined edges of each test strip there shall be made at well. distributed points not less than 3 determinations, using a 1.59 mm (1/16 inch) ball and 100 kg load. The average Rockwell No. shall not exceed 95. An additional determination shall also be: made for pipe cast in metal contact machines, upon the outside of eaciz pipe, using a portable type machine. The equivalent Rockwell. No. for the exterior shall not exceed 95. B. Chemical Analyses. - In addition to such analyses as are required to be made by the contractor, the inspector may obtain samples for chemical analysis from finished material representing each melt. The inspector may have samples chemical analysis taken from test str'..ps. or from any part or parts of the material concerned, prov.ded the serviceability of the part or parts is not destroyed. r.'he sample taken for chemical analysis shall be of sufficient size to permit five analyses to be made. Vi. PARKING OF SHIPL4ENTS. Larking of shipments shall be in accordance with best com;::ercial practice unless otherwise specified. N All cast iron tees, crosses, reducers, increasers and special castings for water pipe shall be made from Class D pattern and shall conform to Standard Specifications for cast iron pipe and fittings adopted by the American water works Association, May 12, 1908. 7 The pipe shall accurately conform to the dimensions given in the following Table. imensions C lass glass II of bells :150 hounds pressure, 250 pounds pressure o inside 346 foot hr)ad 576 f^ot head Nominal eig t + orcins weight, Z V pounds rounds _ .ri .. t1 .y. . O . O .4� . 4> . O F, -P O W i", C] O O 4� O r' F' UI ..1a 4. . U U +> C: C) cd Y U U O 'Cl U -k4 U a U . rl +� 04 • +� f: U ,L"• W bD W W W to C) • U S: U • W L•0 W bD U W bo .H ? Fj 'H C,' U g e r, CV O t0 O CJ Cr �-" C. C.) O to O Ln O E; W +> CJ P -HA •rl E •.4 r i rl H ri ri rl Cl •.4 rl H rl H H rl O .H ;21 'd O .,-1 .�,d 4 4.80: 5.60 :3.50:.34 :200 :260: 289 . .37 : 215: 280 : 311 6 : 6.90: 7.75 ;3.50:.36 :310 :400: 448 . .40 : 340: 440 : 493 8 9.05: 9.85 :4.00:.38 :435 :565: 629 . .46 : 515: 670 : 747 10 :11.10:11.90 :4.00:.42 :585 :760: 849 . .52 : 705: 920 : 1028 12 :13.20:14.00 :4.00:.46 :765 :990: 1109 . .58 : 935: 1220 : 1365 16 :17.80:18.80 :4.00:0.60:1325 18 :19.92:20.92 :4.00:0.64:1579 20 :22.06:23.06 :4.00:0.69:1904 CAST IRON TEES, CROSSES, REDUCERS, INCREASERS, AND SPECIAL CASTINGS FOR 'NATER PIPE. All cast iron tees, crosses, reducers, increasers and special castings for water pipe shall be made from Class D pattern and shall conform to Standard Specifications for cast iron pipe and fittings adopted by the American water works Association, May 12, 1908. 7 • ' 9 14 1 • • • e STANDARD STEEL SCREW PIPE All standard steel pipe sha:_1 be lap -welded and conform to the dimensions shown upon the plans. The steel for the plates and the manufacture of the pipe must be of the best quality soft steel and have a tensile strength of net less than. fifty-five thousand (55,000) pounds per souare inch. Plates must be free from lamination and surface defects. All. pipe used shall be galvanized. All pipes shall be laid in an open trench. The minimum width of excavation for pipes and fittir_gs sh::.11 not be less than six (6) inches wider on both sides of :.pipes or fittings. The excavation shall be mode: s, sufficient distance below the depth indicated by the grade line on the pro:Pile and shown by the grade stakes set by the engineer to allow for thickness of pipes or fittings, and of hubs. Should, i:owever, the trench be excavated to a depth greater than that hereinabove last mentioned, t.e Contractor shall refill such excess excavation with sand. The shall Contractor/at all times during the progress of ;:he work keep the trenches and excavations free from water un -til the backfilling has been All soft and spongy earth or Imaterial below subgrade not to exceed two (2) feet in depth, shall be removed by the Contractor and replaced with screened gravel which shall be tamped until solid. After the pipe has been laid it shall be subjected to a hydrostatic pressure test of 125 pounds per square inch and held for thirty (30) minutes. During this t:i;ne no portion of the pipe nor fittings laid shall show percolation. All fittings for standard pipe; shall be galvanized. Saddles and fittings for connecting standard steel pipe to cast iron pipe shall be as shown upon the plans. 11 0 • 0 1 ' • • • GATE VALVEc' All gate valves up to and including eight (8) inches in dialyeter shall be iron bodied, bronze mounted, two-faced valves of either wedge or parallel faced, double disc type. All gate valves of ten (10) inch diameter and over shall be iron bodied, bronze mounted, parallel faced, double disc valves. Valves and seat rings s_:all be of composition :metal and valve ste.:,s of phosphor bronze. All v--lves must satisfactorily stand a working pressure of one hundred and fifty (150) pounds per square inch, either when closed or open. A11 valves, except by-pass valves, shall stand erect unless otherwise shown. By-pass valves shall lie on their sides unless otherwise shown. All valves shall be provided with a nut for a. wrench and shall open by turning to the left, and be marked with an arrow indicating the direction of opening. All gate valves having a larger diameter than fourteen (14) inches shall be provided with a tevoled gear and with by-pass from two (2) inch to four (4) inch, according to the size of the valve. After gate valves are delivered on the ground, but before they are placed in the line, they shall, be cleaned and painted with two (2) coats of P. & B. Paint, or its equal. FRE HYDRANTS -(TYPE A) Fire hydrants shall be located as shown on the plans. All hydrants shall have bronze mountings and be so arranged that all working parts can be rammoved without digging around or disturbing the barrel. Hydrants shall be connected tD the -main with a section of cast iron pipe, which shall conform both in material and laying to the requirements of these specifications for Cast Iron Pipe. All hydrants shall have flanged ends. All flanges which are designed to be tight under water pressure shall be miachine finished to a true surface. Hydrants having such flanges made by casting against a plate shall be reject;d. All gaskets required in connecting hydrants to the main shall be cloth insertion ring gaskets one -sixteenth (1/16) inch thick. There must be cast on the hydrant in characters raised one-eighth (1/8) inch an arrow at least two and one-half (2 1/2) inches long, and the word "Open", at leE.st one-half (1/2) inch high and one-eighth (1/8) inch in relief, inc.icating the direction to turn to open the hydrant. The hydrants below the surface of t_e ground shall be painted with two (2) coats of P. & B. Paint, or equal. The portion above the ground shall be painted �7ith two (2) coats of dark green, yellow or aluminum paint after the hydrants have been set and tested. All fire hydrants must satisfactorily stand a working pressure of one hundred and fifty (150) pounds per square inch, either when closed or open. MACADAM PAVEMENT TATER IALS All materials for macadam pavement including stone noreenings, crushed rock, and asphaltic oil for all purposes shall. conform to the following specifications: STONE SCREENINGS AND CRUSHED ROCK FOR ::ACADA:.: FAVELENT The stone screenings and crushed rock for macadam pave- ment shall be uniform in quality, and shall be clean, hard, tough, durable material, free from vegetable or other deleterious sub- stances. The crushed rock shall not show more than ten (10) per onnt of stone having rounded surfaces. The crushed rock must be of such material as will show a coefficient of wear of not less than eight (8) after being tested in iln abrasion machine in the manner hereinafter specified. Stone screenings and crushed rock shall be uniformly graded and conform to the following requirements: Stone screenings designated herein as IlNoc.4 Stone Screenings', all shall pass through a one-half (1/2) inch diameter circular opening and at least ninety -:five (95) per cent be retained on a 10 -mesh sieve. Crushed rook designated herein as "No. 3 Crushed Rockil all shall pass through a three-quarter (3/4) inch diar.eter circular opening and all be retained on a one-quarter (1/4) inch diameter opening. Crushed rock designated herein as 11i\?o. 2 Crushed Rock" all shall pass a one and three -quarter's (1 3/4) inch diameter circular opening and c.11 be retained on a ring three-quarters (3/4) inch diameter circular opening. Crushed rock designated herE!in as "No. 1 Crushed Rock" all shall pass a three and one-half (1, 1/2) inch diameter circular opening and all be retained on a one end three-quarters (1 3/4) inch circular opening. ABRASION TEST At least thirty (30) pounds of coarsely crushed rock free from any fragments showing rounded or water worn surfaces shall be available for the tests. The rock to be tested shall be broken in pieces as nearly uniform in size as possible and a test sample shall consist of not less than 49 nor more than 51 pieces. The total weight of rock to be placed in each cylinder shall be five (5) kilograms (eleven pounds). All test pieces shall be washed and t:-,oroughly dried before Weighing. Ten thousand revolutions, at the rate of between 30 and 33 to the minute, shall constitute a test. Only the per- centage of material worn off which will nasc through a 1/16 inch mesh sieve shall be considered in de-cerr in ' .Lc a:acurt of wear. The wear shall be express -.d by c�,sff:.cient knjim= ^s the Coefficient of vyear, which coeffi_cie::t -'hall be obtained by the Formula C = 400 divided by i^, where 0 equals the coefficien'. required and W the weight in grams of the detritius under 1/16 i~:cc in size per kilogra~ of rock used. The rock used in the tests shall be furnished by the Contractor and shall be delivered by him at the testing-:a.china when required by the Engineer. /0- SPHALTIC OIL. The asphaltic oil used under these specifications shall be made from an asphaltic base crude oil which, in ­its natural state contains not less than seventy-five (75) per cent of eighty (80) penetration asphalt, which must :not have been injured by over- hef4ting and which must not be obtained by adding solid asphalt to lighter oils or distillates. The asphaltic oil shall be produced and distilled for road purposes only, and refinery residuums; which are the by- products from the refining of crudes :or gasolines, distillates, kerosenes and lubricating oils, will not be permitted under these specifications. During the refining process the oil shall not be heated to a temperature above 5500 Fahrenheit. TEMPERATURE All oil must be delivered at the point required for application at a temperature of not less than 2500 Fahrenheit, nor more than 4000 Fahrenheit. MEASUREMENTS In determining the quantity of oil delivered the correction for expansion by heating shall be as follows: From the measured volume of Dil received at any tem- perature above 60° Fahrenheit, an amowzt equivalent to 3/10th of 1% for every 100 above said 60° Fahrenheit shall be subtracted as the correction for expansion by heat. For the purpose of measuring oil a temperature of 600 Fahrenheit shall be deemed normal tem- perature. ABATER AND SBDIMENT It shall contain not more than 1/2 of 1�o by volume of water, and not more than 4� by volume of sediment. Deduction will be made for water and sediment in exact; proportion to the per- centage of water and sediment found therein. ASPHALT After being freed from water and sediment, the asphaltic oil shall contain not less than 90040 nor more than 94a of asphalt, having a temperature of 770 Fahrenheit, a penetration of 800, District of Columbia Standard. The percentage of asphalt shall be determined by heating fifty (50) grams of said asphaltic oil or residuum in an evapo- rating oven at a temperature of 565 degrees Fahrenheit, until it has reached the proper consistency when the weight of residue shall be determined and the per cent calculated. Vie time required to reduce the oil to the penetration of 0.80 of a centimeter shall b-1 less than 165 minutes. VOLATILITY The oil shall not lose in ezce:Ejs j: two (2) per cent o' volatile matter when heated from a temperature of 770 Falirenhcit to 2200 Fahrenheit and maintained at 220° Fahrenheit for fiftoen (15) minutes. The time required for heating from 77° F to 22G°f shall be one (1) hour. i /. OTHER REQUIREMENTS. Not less than 99% of the asphaltic oil shall be soluble in carbon bisulphide. Asphaltic oil soluble in bromine bisulphide or in carbon tetrachloride shall be not less than -39.650 of that which is soluble in carbon bisulphide. The solubility in 800 to 82° petroleum ether shall be not more than 80% of that which is soluble in carbon bisulphide. The wax content shall not exceed 1% by weight The ductility shall be not less than :live (5) centimeters at 340. The softening point shall be not less than 90° Fahrenheit. The float viscosity of the oil shall be not less than fifty (50) seconds for an asphaltic oil containing 90% asphalt. For each one-tenth (0.1) of one per cent above ninety (90) per cent of asphalt in the asphaltic oil one (1) E;econd shall be added tothe fifty (5Q) seconds above specified. TANK TRUCKS All tank trucks.:used for the; delivery of this oil must first be submitted to the Engineer who will gauge and stamp upon said tanks the capacity in gallons, ar..d no figure of capacity will be accepted other than the official resting given by said Engineer. MACADAM rAMINT Upon the subgrade prepared as specified herein shall be laid a base course of layer of crushed, rock consisting of a mixture of not less than fifty (50) per cent nor more than seventy (70) per cent, by weight, of No. 1 Crushed Rock, and not less than thirty (30) per cent nor more than fifty (50) per cent, by weight, of No. 2 Crushed Rock, of the quality specified in these specifi- cations, and which shall be spread uniformly to the required width alao+the pavement and to such thickness, which, when fully compressed in the manner hereinafter specified, will have a thick- ness of not less thanand one-half ( 1/2) inches. 17 7 2 Spreading of the crushed rock may be done by hand or by approved mechanical spreaders, but whatever the method, care must be taken to insure that the thickness is uniform throughout its length and width, and that the various sized fragments of the crushed rock specified are well mixed and in no case segregated. When the spreading is done by hand the crushed rock shall be deposited on a platform and from there shoveled into place on the subgrade. Wherever the macadam does not terminate against a curb, gutter or another pavement, shoulders of firm earth, disintegrated granite or gravel of a depth equal to -;he thickness of the pave- ment shall be left or made at such terraination for the pavement to abut against. The rolling, mechanical lock.ng, bonding, seating or bedding shall be done by properly operated standard 3 -wheel macadam rollers having a linear inch weight on the driving wheels of not less than 400 pounds. Rolling shall be commenced at the edge of the spread layer of crushed rock, the roller following the same track until the edge of the course is fastened against any side movement from further rolling. The edge being fastened, the rolling shall be continued by six inch (6i') set -ins, or laps, until the center of the spread course is reached, and then the roller is to be started at.the other edge and in a like manner worked to the center of the course. The roller must at all 'gime: be operated on lines parallel to the center line of the pavement, /:2 .ind no material variation from such lines shall be made. Changes in the direction of movement of the roller must not be conterminous and the roller must not be allowed to stand on the layer of crushed rock until same has been properly consolidated. Rolling, as described above, must be continued until the crushed rock is bedded, bonded and mechanically locked, and until no movement of the .rock fragments can be seen as the roller passes over the layer of crushed rock. As a:1 aid in consolidating the crushed rock, watering of the layer may be done, but the amount of water used must not be enough to wet the subUTade. All depressions in the layer of crushed rock that develop during the rolling must be promptly filled with No. 2 Crushed Rock, and re -rolled. After the layer of crushed mock has been properly rolled, bedded, bonded and so mechanically looked as to meet with the approval of the Engineer, the voids remaining in the layer shall be filled with No. 4 Stone Screenings, the filling to be done by spreading or drifting a light application of No. 4 stone screen- ings over the surface of the layer, care being taken to have the filler thrown in lines parallel to the center line of the pavement, and the fine stone screenings worked down into the layer by rolling and watering. The spreading of the filler and the rolling and watering must be continued until all voids are filled to the sur- face of the layer of crushed rock, and until the layer will sustain and not show wheel or tire tracks from a motor truck carrying a load and having a compression of 900 pounds per inch width of tire. After this course, or layer, of crushed rock has been rolled and filled as above specified, Lnd the surface having dried, it shall be swept by the use of street hand brooms to remove all loose filler from the surface and in the upper one-quarter (1/4) inch of the layer. The surface shall then be lightly watered, and in not less than thirty (30) minutes, nor more than one (1) hour, asphaltic oil, as specified in.these specifications, shall be applied by a power pressure spraying machine approved by the Engineer, at the rate of one-half (1/2) gallon per square yard of surface covered, and at a temperature of not less than two hundred fifty (250) nor more than four hundred (400) degrees Fahrenheit. Immediately after oil has been applied, No. 3 Crushed Rock, as specified in these specifications, shall be spread over the oiled surface in a thin, uniform layer, in sufficient quan- tity to just coyer the oil. The surface shall then be immediate- ly broomed, watered and rolled to bind the No. 3 crushed rock, and form a true surface. Then a second coating of asphaltic oil as above specified shall be uniformly a-pplied at the rate of not less than one-fourth (1/4) nor more than one-half (1/2) of a gallon per square yard of surface covered. A light coating of No. 4 stone screenings shall then be uniformly spread or drifted over the surface in sufficient quantities to absorb all surplus oil and produce a uniform surface with no oil exposed, and no patches or excess crushed rock or stone screenings. The pavement shall then be broomed, watered and rolled until it becomes smooth, true to grade and cross-section, and free from all bunches, hollows and irregularities. 0 i 0 • - • • 0 The base course of crushed rock above mentioned shall not be laid for a greater distance than one-fourth (1/4) mile ahead of the first application of oil, it being the intent of these specifications to keep the work finished as closely as possible, and not to unduly expose the loose crushed rock to injury or dariage from travel, dust or storm water. Should it become necessary, to re -heat the asphaltic oil to comply with the requirements of these specifications, it shall be done at the expense of the Contractor, by the use of hot air or superheated steam coils. In no case shall live steam or water be injected into or allowed to enter the asphaltic oil after it has been received by the Contractor. No asphaltic oil shall be applied until the surface which is to receive it is completed in accordance with these specifications and satisfactory to the Engineer. At least twenty- four (24) hours shall elapse between any taco applications of asphaltic oil over the same area. In the process of oiling, oil must not be allowed to fall on any concrete headwalls, curbs, gutters, walks, or private driveways. All oil tanks and measure- ments of oil shall be as specified in these specifications. The Contractor shall not us=_, or permit the use of this pavement by vehicles until he has received authorization to do so from the Engineer. LAYING CAST IRON' PIPE All pipes shall be laid in an open>trench. The minimu.-i width of excavation for pipes and fittings shall not be less than six (6) inches wider on both sides of pipes or fittings. The excavation shall be made a sufficient distance below the depth indicated by the grade line on the profile and shown by the grade stakes set by the Engineer to allow for thickness of pipes or fittings, and of hubs. Should, however, the trench be excavated to a depth greater than that hereinabove last mentioned, the Contractor shall refill such excess excavation with send. The Contractor shall at all times during the progress of the work keep the trenches and excavations free from water until the backfilling has been cow an6 cd. All soft and spongy earth or material below subgrade not to exceed two (2) feet in depth, shall be removed by the Contractor and replaced with screened gravel which shall be tamped until solid. After the trench has been brought to the proper line and grade in the manner above specified, the pipe shall be laid therein in the following manner; Before any pipe is put into place the trench bottom shall be prepared so that each pipe shall have a firm and uniform bearing over its entire length. All adjustment to line and grade must be made by scraping away ox filling in the earth under the body of the pipe, and not by wedging or blocking up the ends. The lead used for caulking t:ae joints of all pipe shall be of the best quality of pure and soft lead, and suitable for this purpose and in securing a tight and parmanent joint. Gaskets of clean, sound hemp yarn braided or twisted and tightly driven. Before running the lead the joints shall be carefully wiped out to make them clean and dry. The joint shall be run full of lead, and the melting pot shall always be kdpt within fifty (50) feet of the joint about to be poured. The joint shall be caulked by competent mechanics. The caulking to be faithfully executed, and in such a manner as to secure a tight joint without overstraining the metal of t e bell. In all cases the caulking shall be done towards the place of the gate, and other points where the lead is likely to be porous. The lead after being driven shall be flush with the face of the socket.. BACKFILLING. After the pipe has been laid anlix-thmx z±xrx=Ntxanxfkxx 3AJCA:t7�xi3Ar�x�sia�fzr.�[xAt�t]Cx76x]tx good earth, sand or gravel, free from larEe stones or hard lumps, shall be carefully deposited in the trench so as to fill up to a level one (1) foot above the top of the pipe, in such a wanner that the filling placed on each side of the pipe shall be equal. In completing the backfilling of the trenches for pipe upwards from the aforesaid level of one (1) foot above the top of tile pipe, the filling shall be made to within six (6) inches of the ground surface when it shall be thoroughly compacted by flooding where water is in any manner available, and where water is not available, it shall be compacted by tamping. Then, wh-atever remains unfilled in the trenches shall be filled and e:gain tiror• oughly compacted by flooding where wa-uer is in any L,ianr.er available. and where water is not available, the fillinc shall be conpr%.oted by tamping. / S In all public streets, alleys or other public places the surface over the trenches shall, a:ter being backfilled anr. prepared as specified herein, be finished by the Contracto:c is workmanlike manner with the sa%,ia class of pavement or surfac n; as existed on any of said stye us, alleys or public places priD.- to the construction of the story:. dra-in or culvert, unless other• wise specified. Where no re -surfacing is required but the excavation is in an unimproved but traveled roadway, the trenches siva ll be thoroughly rolled with a power roller weighing not less than twelve (12) tons. TESTING PIPE AND FITTINGS FOR LEAKAGE After the pipe has been laid and before backfilling it will be subjected to a hydrostatic pressure test of 150 pounds per square inch, held for thirty (30) minutes, during which time no portion of the pipe or fittings laid shall show percolation. The Contractor shall furnish all pipe, pumps, valves, labor etc. necessary for making these tests. SFOIL BANKS The materials excavated sh2.1:1 be laid co1pactly along the side of the trench, and kept trimmed up so as to cause as little inconvenience as possible to the public; travel. In case the street is not wide enough to hold the earth without stoppinE, the passage- way on the sidewalk, the Contractor shall erect a board fence and keep a passageway - six (6) feet wide •- open on said sidewalk. gates. Free access must be left to ,111 fire hydrants and water - ":EASUREYENTS Main pipes will be measured iorizontally from center to center of structure along the center line of the pipe service, including all specials. SURPLUS `_TATER IAL Surplus material not required in refilling the trench or tunnel shall be pro:-ptly removed by the Contractor as the back- filling progresses and disposed of by ::iim. /l GENERAL WORK The Contractor shall, for the price bid, furnish all c_e materials to execute the work in every respect in a thorough and workmanlike manner, in accordance with the plans and specifi- nations, and to the satisfaction of the Superintendent of Streets. MATER IALS AND SA"PLES All materials must be of specified quality and fully equal to the samples, when samples are required. The Contractor shall furnish to the engineer for test, whenever called for and free of charge, samples of all materials proposed to be used in the work, and he shall notify the engineer as to the source of supply of all such materials proposed to be used not later than ten (10) days before commor_cing the work. Rejected material :.lust be immediately removed from the work by t;.ze Contractor. LABOR Any overseer, superintendent, laborer or other person employed by the Contractor on the work, who shall perform work in a manner contrary to these specifications, shall be discharged immediately and such person shall not again be employed on the work. EXAMINATION Or GROUND Bidders must examine and judge for themselves as to the location of the proposed work, and the nature of the excavation to be made and the work to be done. SETTING STAKES. The Contractor stall give 24 hours notice in writing when he will require the services of the Engineer for laying out any portion of the work.. He shall dig all stake holes necessary to give lines and levels. The Contractor shall preserve all stakes set for the lines, levels or measurements of the work in their proper places until authorized to remove them by the Engineer, and any expense incurred in replacing said stakes which the Contractor or his subordinates may have failed to preserve shall be borne by the Contractor. PLANS ANn SPECIFICATIONS. The Contractor shall keep upon the work a copy of the plans and specifications, and access thereto shall at all times be accorded the Engineer or Inspector. INSPECTORS. The Contractor shall prosecute work only in the presence of the Engineer or Superintendent of St_ceets and any work done in the absence of s id Engineer or Superin-,endent will be subject to refection. The Contractor shall furnish the Engineer and Superin- tendent reasonable facilities for obt^,ining such information as ma.r be necessary to give theta full informat'-on at all times respectir.-, the progress and :Banner of the work and the character of tile materials. PRESERtiATION OF L 0NMYEivTS . The Contractor s^2:11 not dis to --b any monuments or found on the line of improvements, until. ordered by the Engin e*, and he shall bear the expense of re -setting any monuments or which may be disturbed without orders. REYOVING OBSTRUCTIONS : The Contractor shall remove all trees, stones, debris, 7 -Irl. other obstructions thr:t may be encountered in making said iaa- rovements. OBSERVING CITY ORDINANCES. The Contractor shall observe all the Ordinances of the City in relation to the obstruction of streets, keeping open passageways and protecting the same where they are exposed or dangerous to travel. BARRIERS, LIGh'TS, ETC. The Contractor shall take ell necessary measures to protect the vork and prevent accidents during construction. je shall maintain and provide all necessary barriers, Guards, tempbrary brid6es, watchmen and lights. PUBIITC.UTILTTIES. In case it should be necessary to .rove the property of any owner of a public utility or franchise, such owner will, upon proper application by the Contractor, be notified by the Superintendent of wiork to move such property within a specified reasonable time, and the Contractor shall not interfere with said property until after the expiration of the time specified. The right is reserved to the owners of public utilities and franchises to enter upon the street for the purpose of making repairs or chanties of their property th,st may be made necessary by the work. The City shall also have the privilege of entering upon the street for the purpose of repairing culverts or storm drains. LOSS OR DAMAGE. All loss or damage arising from any unforseen obstruction or difficulties, either natural or artificial, which may be en- countered in the prosecution of the Rork, or from any action of the elements, or from any act or omission not authorized by these specifications, on the pert of the Contractor, or any agent or person employed by him, shell be sustained by the Contractor. DEFECTIVE WORM. No work which may be defective in its construction or deficient in any of the requirements of these specifications will be considered as accepted in consequence of the failure of any officer of the City, Engineer or Superintendent connected with the work, to point out said defect or deficiency durinE construction, and the Contractor shall correct any imperfect work, whenever dis- covered, before the final acceptance of the work. PROTECTION OF TORK AND CLEANING UP The Contractor shall care for all work until final completion and acceptance. ue shell ren^.ove all surplus c^aterial and rubbish from the work after its completion, and before he makes apolicetion for the acceptance o:' the -^ork. FINAL INSPECTION Streets The Contractor shall notify -;he superintendent of when he desires a final inspection of -:::e -ork, when t:e latter will, as soon as possible, make the necessary eX?"'.in?tion., if the work is found in compliance with thise specifications, the Superintendent -ill furnish the Contractor *with a certificate to that effect. ALLOWABLE VARIATION When in these specifications a maximum or minimum, either in size, percentage or thickness, or relating to quality or character, or other matter, is allowed or prescribed, the work ehall be accepted as in compliance therewith if within such maximum or minimum so allowed hereby. DEFINITIONS Whenever the word °Cityt, is used in these specifications 't :7efere to the City of Azusa, California. ,Whenever the word "Contractorit is used in these specifications, it refers to the party or parties of the second part in the agreement for the construction of the work herein specified. .Whenever the words ('Superintendent of Streets" or "Engineer" are used in these specifications, they refer respec- tively to the ItSuperintendent of Streetstf or IfOity Engineer" of the City of Azusa, and their authorized agent, or inspectors. /i 4 The City Clerk shall certify` to the passage of'this. Resolution and -shall cause the same to be entered in'the Book of Resolutions, and a minute of the passage thereof in the Record of the'City Council, of the meeting at which said Resolution alas passed. . Passed and approved this day of, , 1929. -- Mayor ATTEST: C ity C ' rk STATE -OF CALIFORNIA ) .COUNTY OF LOS ANGELES( es. CITY OF AZUSA ) I,, City Clerk of the City of Azusa,' do hereby ce ify that- the`.foregoing resolution, being Resolution No. ffZ2, was.adopted by'the City Council of said City, signed by the Mayor of said,City.and attested by the City Clerk, all at a regular meeting thereof held on_the. 3 day of. 1929, 'and 'that .the same was passed by the following vote, to—wit: AYES: Councilmen, NOES, Councilmen, ABSENT, Councibmen, cc c,C 1-17 "City Clerk, of the City of Kzus.a.