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HomeMy WebLinkAbout97 - Construction of Sanitary Sewers1 2 3 4 5 • 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 • 29 30 31 • 32 RESOLUTION NO. 97 A RESOLUTION OF THE BOARD OF TRUSTEES OF THE CITY OF NEWPORT BEACH, ADOPTING SPECIFICATIONS NO. 27 FOR THE CONSTRUCTION OF SANITARY SEWERS WITH CEMENT SEWER PIPE, MANHOLES, JUNCTION CHAMBERS, PUMPING STATIONS, RECEIVING BASINS, SEPTIC TANK ANDCQTHER APPURTENANCES IN THE CITY OF NEWPORT BEACH. Be it resolved by the Board of Trustees of the City of New- port Beach, that the following Specifications to be known as Specifications No. 27 for the construction of sanitary sewers with cement sewer pipe, manholes, junction chambers, pumping stations, receiving basins, septic tank and other appurtenances in the City of Newport Beach be and the same are hereby adopted. GENERAL REQUIREMENTS -1- WORK: The contractor shall, for the price bid, furnish al materials and perform all the labor necessary to execute the work in every respect in a thorough, workmanlike manner, in accordance with the plans and specifications and to the satisfaction of the Street Superintendent. -2- MATERIALS AND SAMPLES: All materials must be of specified quality and fully equal to samples when samples are required. The Contractor shall furnish to the City Engineer for test, when- ever called for and free of charge, samples of all materials pro- posed to be used in the work. Rejected materials must be immedia ly removed from the work by the Contractor, and shall not be brought again upon the work. -3- LABOR: The Contractor shall employ competent foreman, laborers and mechanics. Any overseer, superintendent, laborer, or otherperson employed on the work by the Contractor, who is in- temperate, incompetent, or who shall perform his work in a manner contrary to these specifications shall be discharged immediately and such person shall not again be employed on the work. In the absence of the Contractor from the work, whether permanent oL temporary, he must provide and leave a competent and reliable agent or foreman in charge. All notices, communications, orders or instructions given or sent to or served upon such agent or foreman shall be taken as served upon the Contractor. -4- EXAMINATION OF GROUND: Bidders must examine and judge for themselves as to the location of the proposed work, the nature of the excavation to be made and the work to be done. -5- SETTING STAKES: The Contractor shall give twenty- four(24 hours' notice in writing when he will require the service of the City Engineer for laying out any portion of the work. He shall dig all stake holes necessary to given 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 City Engineer, and any -1- 1 2 3 • 4 5 • 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 • 29 30 31 • 32 expense incurred in replacing said stakes which the Contractor or his subordinantes may have failed to preserve shall be borne by the Contractor. -6- PLANS AND SPECIFICATIONS: The Contractor shall keep upon the work,a copy of the plans and specifications, and access there- to shall at all times be accorded the Engineer or Inspector. -7- INSPECTORS: The Contractor shall prosecute work only in the presence of an engineer or an inspector appointed by the Stre Superintendent and any work done in the absence of said engineer inspector will be subject to rejection. The Contractor shall furnish the engineers and inspectors reasonable facilities for obtaining such information as they desire respecting the progress and manner of the work and.the character of the materials. 10 PRESERVATION OF MONUMENTS: The Contractor shall not dis- turb any monuments or stakes found on the line of the improvements until ordered by the City Engineers and he shall bear the expanse of resetting any monuments or stakes which may be disturbed withou orders. -9- REMOVING OBSTRUCTIONS: The Contractor shall remove all trees, stones, debris and other obstructions that may be encounter in making said improvements. -10- OBSERVING CITY ORDINACES: The Contractor shall observe all the ordinm ces of the City of Newport Beach in rleation to obstruction of streets, keeping passageways open and protecting the same where they are exposed or are dangerous to travel. -11- BARRIERS, LIGHTS, ETC.: The Contractor shall take all necessary measures to protect the work and prevent accidents during construction. He shall provide and maintain all necessary barriers, guards, temporary bridges, watchmen and lights. -12- CROSS STREETS: No more than one cross street shall be closed at one time. -13- PUBLIC UTILITIES AND HOUSE CONNECTIONS: In case it should be necessary to move the property of any owner of a public utilit or franchises such owner will, upon proper application by the Contractors be notified by the Street Superintendent to move such property within a specified reasonable times and the Contractor shall not interfere with said property until after the expiration of the time specified. -2- 1 The right is reserved to the owners of public utilities and franchises, to enter upon the street for the purpose of making 2 repairs or changes of their property that may be made necessary by the work. The City shall also have the privilege of entering 3 upon the street for the purpose of repairing sewers, water pipes, or other pipes or conduits, or making house connections therewith, • 4 or repairing culverts or storm drains. The Contractor shall not disturb any sewers or house con - 5 nection sewers or other house connections that may during con- struction be found located in any place that is to be occupied . 6 by some portion of the work which is to be constructed under his contract or which occupy any portion of the trench or tunnel which 7 it is necessary for him to excavate in prosecuting the work, un- less he first obtains from the Street Superintendent or inspector 8 a permit in writing so to dD. Unless otherwise indicated on the plans, or unless per - 9 mission is granted by the Street Superintendent or inspector for their removal or other disposition, all house connections shall 10 be maintained by the Contractor and shall not be disturbed or dis- connected by him during the progress of the work. 11 -14- 12 LOSS OR DAMAGE: All loss or damage arising from any unfor- 13 seen obstruction, either natural or artificial, or other diffi- culties which may be encountered in the prosecution of the work, 14 or from any action of the elements, prior to final acceptance of the work, or from any act or omission not authorized by these 15 specifications, on the part of the Contractor, or any agent or person employed by him, shall be sustained by the Contractor. 16 -15- 17 DEFECTIVE FORK: No work which may be defective in it cln- 18 struction, or deficient in any of the requirements of these speci- fications will be considered as accepted in consequence of the 19 failure of any officer of the City or inspector connected with the work to point out said defects of deficiency during construc- 20 tion, and the Contractor shall correct any imperfect work, wheneve: discovered, before the final acceptance of the work. 21 -16- 22 PROTECTION OF WORK AND CLEANING UP: The Contractor shall 23 care for all work until final completion and acceptarc e. He shall remove all surplus ua terial and rubbish from the work after its 24 completion and before he makes application for the acceptance of the work. 25 -17- 26 FINAL INSPECTION: The Contractor shall notify the Street 27 Superintendent when he desires a final inspection of the work, whe, the latter will, as soon as possible make the necessary examinatio, 28 and if the work is found in compliance with these specifications, the Street Superintendent will furnish the Contractor with a cer- • 29 tificate totthbt effect. 30 -18- 31 ALLOWABLE VARIATIONS When in the specifications a maximum • and minimum, either in size, percentage or thickness, or relating 32 to quality or character or other matter, is allowed or prescribed, the work shall be accepted as in compliance therewith if within such maximum or minimum so allowed hereby. -3- • 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 • 29 30 31 32 Il �� -19- DEFINITIONS: Whenever the word "City" is used in these specifications it refers to the City of Newport Beach, California, When the word IfContractor" is used in these specifications it refers to the party or parties of the second part in the agree- ments for the construction of the work herein specified. Whenever the words "Street Superintendent" or "City Emggnee are used in these specifications, they refer respectively to the Street Superintendent or the City Engineer of the City of Newport Beach, or their authorized agents or inspectors. MATERIALS -29- BRICK The brick used shall be whole, sound, hard brick and must give a clear, ringing sound when struck together. They shall be uniform in quality and shall be culled or sorted when delivered on the ground. All bricks shall be subject to the following test made by the City Engineer: Three or more bricks shall be broken across, thoroughly dried, weighed, then immersed in water for 24 hours, and then weighed again. The absorption shall be determined by the differ- ence between the two weights, and if such absorption shall exceed ten (10) per cent of the dry weight, the brick from which the samples for test were selected shall be rejected. All Brick shall be of the kind usually known as common brick with rectangular surfaces, and shall have the following di- mensions: 8 inches by 4 inches by 2-J inches. -21- CEMENT PIPE GENERAL DESCRIPTION: All pipe shall be machine moldeddand m ,,chine compacted. All pipe shall have bell and spigot ends. All branches and other specials shall conform to standard sewer pipe designs as shown by plans and specifications furnished by the engineer. All pipe and specials shall be of uniform size and thick - ness, and shall be designated by their interior diameter and shall not vary from a true circle more than three per cent (3%) of its nominal diameter. Pipes not intended for curves or bends shall be true and straight. Each straight pipe having a branch or connection molded thereon shall be not less than two (2) feet, nor more than three (3) feet long; plain pipe shall be in length not shorter than two (2) feet nor longer than (3) feet. The bells of all pipe shall be of the self - centering type and there shall be left an annular space sufficient to permit of the proper placing of joint mortar, said space to be at least three - eights (3/8) inch between the bell and spigot. QUALITY: All pipe shall be first quality, free from cracks blisters and other imperfections that are detrimental to the work; and shall be dense and tough. -4- 1 2 • 3 4 • 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 • 29 30 31 32 Pipe thirty days old, when broken shall appear homogeneous7 free from voids and generally uniform; and if containing stone shall show pieces of fractured stone firmly imbedded in the mortar MATERIALS: All pipe shall be made of Cement of the quality herein specified7 and sand, except that gravel or broken stone to a size of one -half the thickness of the shell of the pipe will be permitted. The pipe shall be made of a mixture which shall be by measure one part of Cement to three parts dry aggregate, and the aggregates shall be so proportioned as to produce a pipe which wil comply with the tests herein dpecified. All cement used shall conform to the specifications and tests herein prescribed. The ma terials composing the aggregate shall be graded to fill voids and shall be clean and suitable for the work. No hydrafted lime, alum and soap, asphaltum7 oil or other water - proofing compound7 or any materials other than cement7 sand, stone and water, will be permitted in manufacturing the pipe, nor shall any coating of cement wash be added to the inside surfac METHOD OF MAKING: All pipe shall be made under a roof, the materials shall be thoroughly mixed in a batch machine mixer and shall then be fed into metal molds and during the process of feed- ing shall be thoroughly tamped with a power tamper in layers of about one inch in thickness. The feeding must be regular and uniform. CURING: All pipe shall be kept thoroughly wet for a per of seven days and shall bear the date of manufacture and shall not be laid in the trench before thirty days old. DIMENSIONS: All pipe shall be designated as to respective dimensions as follows: TESTING: The engineer may at any time make tests as here- inafter described, of any pipe to be used in the work, and the contractor shall furnish at his own expense samples selected for such tests. -5- TABLE OF DIMENSIONS Minimum Shell Minimum Size Length Thickness Socket Depth. 4 in. 2 ft. 3/4 in. 2 in. 6 in. 2 ft. 3/4 in. 2 in. 8 in. 2 ft. 3/4 in. 2 in. 10 in. 2"E ft. 1 in. 2 in. 12 in. 2 ft. 1 in. 2 in. 14 in. 3 ft. 1* ' in. 2 in. 15 in. 2* ft. l-, in. 2 in. 16 in. 2-LT ft. 1 3/8 in. 2j in. 18 in. 22 ft. 1' in. 2 in. 20 in. 2j ft. 1 3/4 in. 2 in. 21 in. 2z ft. 1 3/4 in. 22 in. 22 in. 2j ft. 1 7/8 in. 2z in. 24 in. 2 ft. 2 in. 3 in. 27 in. 2* ft. 2 in. 3 in. 30 in. 22 ft. in. 3 in. TESTING: The engineer may at any time make tests as here- inafter described, of any pipe to be used in the work, and the contractor shall furnish at his own expense samples selected for such tests. -5- 1 2 • 3 4 • i • r • 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 HYDROSTATIC TEST: Untreated pipe thirty days old shall no percolation up to 15 pounds water pressure per square inch, held for five minutes, and shall resist momentary fracture at thirty pounds per square inch. ABSORPTION TEST: Untreated pipe thirty days old and thoroughly dry, shall show an absorption of not more than five (5) per cent; to be determined by immersing a broken piece in water for a period of twenty -four hours7 and then dividing the differenc between its original weight and its weight at the end of the period of immersion, by its original weight. BROKEN PIPE: No pipe shall be used which has a piece broken from the spigot end deeper than the bellor longer than o third of the diameter of the pipe; nor which has a piece broken from the bell end if the fracture extends into the body of the pipe or is longer than one -third of the diameter of the pipe. INSPECTION: All materials used in the manufacture and the process of manufacture and the finished pipe, shall be subject to inspection at the factory and the contractor shall provide all apparatus necessary for making the tests herein specified. -22- CAST IRON PIPE All cast iron pipe shall be of the best quality of water pipe, furnished in twelve -foot lengths, and shall have a minimum weight per lineal foot within three (3) per cent of the following standards: 8 inch pipe, 43 pounds; 10 inch pipe, 57 pounds; 12 inch pipe, 73 pounds; 14 inch pipe, 90 pounds; 16 inch pipe, 108 pounds; 18 inch pipe? 129 pounds; 20 inch pipe, 150 pounds, and 24 inch pipe, 204 pounds. Such cast iron pipe shall be sound and smooth without cracks7 cold shorts swells, lumps, scabs, sand holes, or other imperfections, and wholly free from admixture of cinders, slag or sand, and shall be dipped as specified for castings in Section 26 of these Specifications. -23- ["DIRDRY Y All cement used shall be Portland cement and must conform to the following requirements and be subject to the following tests, which will be open to the Contractor and will be made by the methods and under the conditions prescribed by the Committee on Cement Tests of the American Society of Civil Engineers: (a) CONSISTENCY. All cement for set tests, test pats and neat briquettes will be mixed with sufficient water to reduce the cement to normal consistency as prescribed by the Committee of thi American Society of Civil Engineers. Neat briquettes will be pressed into the molds by the hand, and the mortar briquettes wil: be compacted by light tapping. Mortar briquettes shall be mixed to a state of plasticity corresponding as nearly as possible to normal consistency in neat briquettes. (b) FINENESS. The cement must be evenly ground, and when tested with the following standard sieves, must pass at lease the following percentages by weight. -6- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 • 29 30 31 32 No. 100 sieve, having 100 meshes per lineal inch 92,E No. 200 sieve, having 200 meshes per lineal inch 75% (c) TIME OF SETTING. It shall develop initial set in not less than thirty (30) minutes, but must develop hard set in not less than one (1) hour nor more than ten (10) hours. (d) TENSILE STRENGTH. Neat briquettes one (1) inch square in section shall attain a minimum tensile strength as follows: At 24 hours in moist air 175 lbs. At 7 days (1 day in moist air, 6 days in water) 500 lbs. At 28 days (1 day in moist air, 27 days in water)600 lbs. Briquettes one (1) inch square in section, made of one (1) part of cement to three (3) parts of standard testing sand, shall attain a minimum tensile strength as follows: At 7 days (1 day in moist air, 6 days in water) 200 lbs. At 28 days (1 day in moist air, 27 days in water)275 lbs. The sand test must in all cases show an increase in strength at 28 days over the 7 days tests. (e) SOUNDNESS. Pats of neat cement, about three (3) inch in diameter, one -half (J) inch thick at the center, and tapering a thin edge, will be kept in moist air for a period of twenty -fou hours. A pat will then be kept in air at a normal temperature and observed at intervals for at least twenty -eight (28) days. Another pat will, after having been kept twenty -four hours in moist air, be placed in water at normal temperature. The wate shall then be heated to boiling temperature and maintained there for three (3) hours. These pats to satisfactorily pass the requirements, must remain firm and hard, and must show no signs of distortion, check ing, cracking, clotching or disintegration. -24- SAND All sand must be free from oil, coal tar of organic matter, and must not contain more than five (5) per cent, by weight, of clay or silt. All of the sand shall pass through a screen having four (4) meshes per lineal inch. At least thirty -five (35) per cent, but not more than eighty -five (85) per cent, by weight, shall be retained on a screen having thirty (30) meshes per lin- eal inch. -25- STONE The stone shall be screened gravel or broken stone, as the Contractor elects and shall have a specific gravity of not less than 2.50. It shall range in size from one - quarter (-) inch minimum to two and one -half (221) inches in greatest demen- sions maximum. (a) All screened gravel shall be clean and hard, and s not contain more than (5) per cent of sand. -7- • • t 1 2 3 4 5 n 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Two (b) BROKEN STONE. Broken stone shall be the run of the crusher, except, however, that not more than five (5) per cent of its volume shall be material which will pass through a one - quarter (J) inch mesh screen, and not less than thirty (30) per cent of its volume shall be material which will pass a three - quarter (3/4) inch mesh screen. It shall be clean hard and durable in quality, shall range in size from the minimum noted above to such size as will pass a two (2) inch ring, and shall pass the following test: TESTING BROKEN STONE. The broken stone shall be uniform in quality, shall not show more than five (5) per cent of stone having rounded surfaces, and shall be such hard, tough material as will show a coefficient of wear of not less than ten (10) after being tested in the manner hereinafter specified in a Deval Abra- sion Machine. At least thirty;(30) pounds of coarsely broken stone, free fm m any fragments showing rounded or water worn surfaces, shall b available for the tests. The rock to be tested shall be broken in pieces as nearly uniform in size as possible and at test, sam- ples shall consist of not less than forty -nine (49), nor more than Vifty -one (51) pieces. The total weight of rock to be placed in each cylinder shall be five (5) kilogrammes (eleven pounds). 811 test pieces shall be washed and thoroughly d ridd before weighing. Ten thousand (10,000) revolution, at the rate of betwee thirty (30) ani thirty -three (33) to the minute shall constitute a test. Only the percentage of material worn off which will pass through a one sixteenth (1/16) inch mesh screen, shall be con- sidered in determining the amount of wear. The wear shall be expressed by a coefficient known as the coefficient of wear, which coefficient shall be obtained by the formula C equals four hundred (400) divided by W, where C equals the coefficient required and W the weight in grammes of the detritus under one - sixteenth (1/6) inch in size per kilogramme of rock used. The rock used in the test shall be furnished by the Con- tractor and shall be delivered by him at the testing machine when required by the engineer. -26- CASTINGS All castings for manhole heads, covers, and other purposes must be of tough gray iron, free from cracks, holes, swells and cold shorts, and be of workmanlike finish and must donform to the plans. The quality shall be such that a blow from a hammer All produce an indentation on a rectangular edge of the casting without flaking the metal. Before leaving the foundry all castings shall be thoroghly cleaned and subjected to a hammer inspection, after which they shall be dipped in a. preparation of asphalt or coal tar and oil applied at a temperature of not less than 290 degrees, nor greate than 310 degrees Fahrenheit, in such a manner as toform a firm an tenacious coating. EXCAVATION -27- SUB -GRADE -8- 1 2 • 3 4 00 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 • 29 30 31 • 32 The sub -grade for pipe sewers shall be the exterior bottom of the pipe, and for masonry sewers, the exerior of the masonry composing the invert of the sewer. -28- TRENCHES AND TUNNELS Where so indicated on the Plan or Profile the sewer shall be laid in an open trench, or in tunnels. Where open trenches or tunnels are not so indicated, the sewer may be laid in sections of open trenches connected by tun - nels, the length of which tunnels shall not exceed one -half (2) the depth of the sub -grade below the surface of the ground, proved d, however that the tunnel length shall in no case be more than eight (A) feet. The minimum width of excavation for sewers in trenches and tunnels shall be as follows: (a) For pipe sewers six (6) inches wider on both sides, or a total width of twelve ?12) inches ,pore than the exterior dia- meter of the pipe. (b) For masonry sewers]¢ the external horizontal diameter of the sewer plus the thickness of the sheeting and wales. Where tunnels are made, they shall be cut to a height of at least two (2) feet above the crown of the sewer. 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 City Engineer to allow for the placing of the sewer invert$ together with the concrete foundation if any such foundation is specifiedon the plan or profile of said sewer. Should the trench be excavated to a depth greater then that herein above last mentioned the Contractor shall refill such excess excavation with screened gravel which shall be tamped until solid. Where excavation in tunnels in required, the tunnel shall be driven from shafts located at the places where manholes and other structures are shown on the line of said tunnels, and at such other points as may be selected by the Contractor and ap- proved by the City Engineer. The requirements for removing rock, as given in Section 32 of these specifications, shall apply likewise to excavation in tunnels. Wherever the nature of the ground will admit of its the bottom of the excavation for masonry sewers must conform to the outside of the lower half of the sewer. The trench shall not be opened more than 300 feet in ad- vance of the sewer laying, nor left unfilled for more than 200 feet in the rear thereof, unless otherwise specified. All water pipe extensions shall be made in trenches separ- ate from those used for sewer. Unlessotherwise specified, such extensions shall be laid in trenches having a depth of not less than two and one -half (22) feet below the surface of the ground a d located at a distance from the sewer trench of not less than three (3) feet. Disposal of water from trenches: The Contractor shall at all times during the progress of the work keep the trenches and e - cavations free from water. Water from the trenches and excavatio s shall be disposed of in such a manner as will neither cause injur to the public health, nor to public or private property, nor to the work completed or in progress, nor to the surface of the streets, nor cause any interference with the use of the same by the public. • • r • 2 3 4 5 ri 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 .24 25 26 27 28 29 30 31 32 -29- MANHOLES AND OTHER STRUCTURES The excavation for all manholes and other structures shall be ,sufficient to leave at least six (6) inches in the clear be- tween their outer surface and the embankment or timbering which may be used to protect them. -3G- REMOVING SOFT OR SPONGY MATERIAL All soft and spongy earth or material below sub - grade, not to exceed a depth of two (2) feet, unless otherwise shown on said Plan and Profile, shall be removed by the Contractor and replaced with screened gravel which shall be tamped until solid. -31- BRACING TRENCHES The sides of the excavation shall be supported with sheet planking and bracing, and all tunnels shall be timbered, whenever the ground will not stand unsupported, and in all cases the sheet piling or timbers shall be drawn, as the work progresses, in such manner as to prevent the caving in of the sides of the trench. kll openings caused by the removal of the sheet piling of timbers shall be filled with good earth or sand, which shall be compabted by flooding, where sufficient water is in any manner available. Where water is not available, said openings shall be thoroughly tamped. -32- ROCK If the bottom of the trench is found to consist of rock, the rock shall be removed to four (4) inches below sub -grade and t trench refilled with four (4) inches of screened gravel whichi shall be tamped until solid. In case any bock is blasted, the blast shall be covered with heavy timbers. @here a line of water, gas, sewer or other main pipe or conduitsintersects the line of the trench, no blast, shall be made closer than five (5) feet to the same, but the rock shall be removed without blasting. No blasting will be allowed except by special permission in writing from the proper municipal officers. -33- SPOIL BANKS The materials excavated shall be laid compactly 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 stopping the passageway on the sidwalk., the Contractor skull erect a board fenc and keep a passageway, six feet wide, open on said sidewalk. Free access must be left to all fire hydrants and water gat WORK OF CONSTRUCTION -10- • 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 • 29 30 31 • 32 -34- PIPE - LAYING After the trench for pipe sewers 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 or filling in the earth under the body of the pipe, and not by wedging or blocking up the hub. All pipes previous to their being lowered into the trench shall be fitted together and matched, so that when joined in the trench there shall be no shoulders or unevenness along the lower half of the pipe. The faces of all spigot ends and of all shoulders in the hubs or sockets must be true and brought into fair contacts and all lumps and excrescences on said faces shall! be cut away before the pipe is lowered into the trench. The pipe shall be laid, without break, uphill, from struc- ture to structures and with the socket end up grade. Whenever the work ceases for any reasons the unfinished end of the sewer shall be securely closed with a tight - fitting plug or cover. -35- HOUSE CONNECTIONS The Contractor shall place as many six inch "Y" branches fo house connections in cement pipe sewers as may be designated on th Plans. The "Y" branches unless otherwise specified, shall be in- clinded upward at an angle not greater than forty -five degrees fro a horizontal line. If so shown on the Plans, "T" branches shall be substituted for "Y" branches. Each "Y1q or "T" branch is to be closed at the outer end by a cement stoneware cap made for that purpose, unless where designated on the Plans that house connectio are to be laid. The space . in the socket above the cap shall be filled with wet sands covered with a thin coating of neat cement mortar. When so indicated on said Plan and Profiles house connec- tion sewers of cement pipe shall be laid from the upper end of the Y pipe to the curb line, and the internal diameter of said house connection sewers shall be six (6) inches. The Y pipes shall be joined to the lateral sewer by eighth bends (said eighth bends to be considered a part of the house connection sewer), unless other- wise whown on the plans. The invert of the upper end of each house connection sewer shall be built so that It will have a fall of 1 foot in 50 feet to the main or lateral sewer. EXCEPTING as otherwise noted on said plans. Lhere Drops for house connections are specified for a pipe sewer on said Plans and Profiles, the Contractor shall build a six inchT branch and a six inch vertical stack surmounted by a six inch by six inch V branch set vertically as shown on detail by Plans on file in the office of the City Engineer. If this drop is not connected to a house connection sewers the openings in the Y branchshall be closed by cement stoneware caps as specified above. Where a house connection sewer is to be connected with said drops, all bends lead ng away from the Y branch shall be con- sidered as part of said house connection sewers unless otherwise shown on said plan. -11- Lm 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 -36- MEASUREMENTS Main sewers will be measured horizontally from center to center of structure, along the center line of the sewers including all specials. House connection sewers will be measured horizontally from the center of the main sewer to the upper end of the house con- nection sewer. Drops for house connections will be measured vertically fro the flow line of the main sewer at the bottom of said drops to the upper end of the six inch by sic incy Y branch, which forms the top of the drops, unless otherwise specified. -37- PIPE JOINTS Unless otherwise specified, the entire annular space in al. pipe joints between the exterior of the spigot and the interior of the socket shall be completely and carefully filled with cemen mortar of the composition specified in Section 38. The mortar shall then be neatly Veveled off from the outer edge of the hub to the sides of the pipes special care being used to secure good work at the lower part of the joint. The joints of all pipes six teen (16) inches and over in diameter shall be carefully pointed and wiped on the inside, and all pipes under sixteen (16) inches in diameter shall be carefully wiped on the inside. No joints shall be entirely cemented until the next two (2) joints in ad- vance are laid. When water is found in the trench a flat oakum strand of proper size dipped in neat cement grout may be laid in the lower part Q' the hub before the next pipe is inserted. A gasket of oakum twisted into stra ds may then be tightly driven into the joint from the outside so as to fill the joint to one -half (1/0 of its depth. Unless otherwise specified the rest of the joint shall be filled with mortar composed of equal parts, by volumes of cement and sand. No joint shall be filled until the gaskets have been placed in the next two (2) joints in advance. Later must not be allowed to rise up to or around the pipe or to flow through the pipe until the mortar has set hard. On the completion of each section of the sewer between man holes, where the soil is wets the two ends of the s ewer at the manholes shall be closed sufficiently to prevent the entrance of water and tested for leakage, which if found to occur in such quantities as would impair the efficiency of the sewer, shall be located and stopped. Where such leaks are discovered before the completion and acceptance of the sewers the sewer shall be immedi ately uncovered and the leaks stopped. The interior of the sewer shall be freed from all dirt and foreign material as the work progresses and left clean at its completion. Whenever the pipe sewer is located within ten (10) feet distance of trees, the removal of which is not included in the contract for the sewers the joints of the pipe shall be entirely surrounded with four (4) inches of cement concrete of the propor= tions hereinafter described. -38- MORTAR All mortar used for making pipe joints in sewers, unless otherwise specified, shall be composed of one (1) part of cement two (2) parts of sand, by volume. One sack of cement of 94 pound -12- r 1W 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 net weight will be considered as having a volume of one cubic foot. All mortar used for manholes, or other structures, the sur- faces of which are required to be plastered with cement mortar as indicated on the plans, shall becomposed of one (1) part of cement to two and one half (2 *) parts of sand, by Volume unless otherwise specified on the drawings, except that all mortar used for plastering the interior of flush tanks, and flushing manholes shall consist of equal parts (by volume) of cement and sand. The cement and sand must be thoroughly mixed dry, until the mass assumes a uniform color, and then water shall be added to giv the mixture a proper consistency. Mortar shall be made fresh as needed. No mortar shall be used which has begun to set and no re- tempering thereof will be permitted. Mortar shall be mixed in a watertight box and in no case on the pavement or ground. -39- CONCRETE Unless otherwise specified, on the Plans concrete shall be composed of one (1) part of cement, three (3) parts of sand, and six (6) parts of stone, by volumes and the whole shall be thorough mixed, so as to produce a concrete of uniform consistency. All proportions shall be obtained by actual measurements in boxes, and no material shall be used which has not been thus measured. All mixing shall be done in boxes, or upon tight platforms, or in mixers. As a rule, sufficient water shall be used to produce con- crete of a mushy consistency. Substantial forms shall be made in which to construct all concrete work. The material for said forms shall be of such thickness and strength as to be unyielding during the process of placing and tamping the concrete. When the sewer invert is made of concrete, the forms used shall be accurately made and correctly set. They must be tight and have a smooth inside finish which shall be cleaned and lubri- cated whenever necessary to prevent adhesion of mortar. norms must not be removed until the cement is set End the invert shall be allowed to set for twelve (12) hours before the arch is turnd. No concrete shall be used that shows evidence of having set or that has become unfit for good work from standing too long, on from any other cause, and no remixing of concrete will be al- lowed. Concrete shall not be laid in water or on a muddy foundatic All concrete shall be well consolidated in layers not more than eight (8) inches in thickness, with tamping bars or other tools, until water flushes to the surface. Concrete shall be so placed and tamped as to produce smooth exterior surfaces where exposed. Where new work is joined to old concrete, the surfaces of the old work shall be thoroughly cleaner and ingistened, and a bed of neat cement mortar one - quarter ( -t) of an inch thick shall be used to secure a bond between them. All concrete must be kept wet and covered with earth of other material. No wheeling, working or walking on concrete will be allowed until it is set. -40- BRICK MASONRY -13- 1 2 ' 3 4 5 6 7 8 9 10 11 12 13 14 15 16 r 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 The Contractor shall construct the manholes, junction chambers, flush tanks, lamp -holes or other structures that are called for on said Plan and Profile and fit them as required with cast iron frames and covers, iron steps and other fixtures, full details for all of which are shown upon Plans on file in the Of- fice of said City Engineer. No brick work shall be laid upon the concrete foundations until the concrete foundation has set. All brick work shall be built to the lines and demensions shown upon the Plans. All brick shall be clean and thoroughly wet immediately before laying. Each brick shall be laid with full mortar joints on its bed, end and side at one operation. In no case is slushing or grouting of a joint to be allowed, nor is a joint to be made by working in the mortar after a brick is laid. No brick shall be laid in water and no water shall be al- lowed to stand or run upon brick work until the mortar has set. The brick work shall be well bonded. Unless the plans otherwise specify the maximum width of joints, the joints between bricks on the inside of the structure shall not exceed three - eights (3/8) of an inch. All joints on the inside of structures and sewers shall be neatly struck and pointed where plastering is not specified on the Plans. The outside of all structures shall be neatly plastered with mortar one half (J) of an inch thick as specified in Section 38 hereof. After the plastering on the interior of flush tanks and flushing manholes has set, the interior surfaces shall be coated with neat cement grout put on with a brush. Pipe branches for lateral sewers shall be built into the structures as shown-on the drawings, the outer ends to be closed as specified in Section 35 hereof. In laying pipe up to manholes or flush tanks, nopipe shall be allowed to project more than two (2) inches thereinto, and in no case shall the bell or hub of a pipe be built into the wall of a manhole or flush tank. All brick work shall be protected from the sun's rays by adequate covering, or shall be kept wet until suchtime as it can consistently be covered with earth without in any way damaging the work. No wheeling, working or walking on brick work will be al- lowed until it is set. Lhere new work is jointed to the surface of unfinished work, the latter must be thoroughly cleaned and moistened. BACK FILLING -41- TRENCHES After a section of pipe sewer has been laid and the mortar used in the joints has sufficiently set, good earth, sand or gravel free from large stones or hard lumps shall be carefully deposited in the trench so as to fill it up to a level two (2) fee above the top of the pipe in such a manner that the filling placed on each side of the pipe shall be equal. The backfilling over a masonry sewer to a height of two (2) feet a above the crown shall be similarly made as soon as the out- side plastering shall have thoroughly set, provided that at least six (6) hours' time shall have expired since the completion of the plastering. In all cases of backfilling, the utmost care must be taken to thoroughly compact the materials used in refilling the trench below the axis of the sewer. -14- • 40 -3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 • 29 30 31 • 32 r r^ In completing the backfilling of the trenches for pipe sewers upwards from the aforesaid level of two (2) feet above the to p of the sewer, the filling shall be made to within one (1) foot of the ground surfaces provided that if the trench is more than ten (10) feet in depth the filling shall be carried only to .a level ten (10) feet above the subgrade when it shall be thorough ly compacted by flooding where water is in any manner availableg a where water is not available it shall be compacted by tamping. Then whatever remains unfilled in the trenches shall be filled, and again thoroughly compacted by flooding where water is in any manner available and where not available the filling shall be com- pacted by tamping. The filling shall be thoroughly rolled with a roller weighing not less than 250 ppunds nor more than 350 pound per inch width of tire. If desired by the Contractor, the backfilling above the aforesaid two -foot level may be made by the use of scrapers. Prior to restoring the excavated surface over the trenches, the Contractor shall remove the backfilled material and the sur- face for a distance of six (6) inches outside of and adjacent to the sides of the trenches to a depth sufficient to allow the exca- vated surface to be restored as hereinafter specified. -42- TUNNELS Before the trenches are backfilled above the aforesaid two foot level specified in Section 41, the earth above all short tunnels connecting sections of open trenches shall be cut through to the surface of the ground for the full width of the trench where so indicated on the Plan or Pxfile. Where not so indicated the earth above all said short tunnels shall be cut to a "V" shap having the point of the "V" at the center of the top of the tun - nel, and the slope of the "V" making an angle of not less than 45 degrees with the horizontal. Where tunnels are specified on the plans or profiles they shall be completely filled as soon as the sewers is laid and the mortar in the joints of pipe sewers or the outside plastering of masonry sewers has properly set. This filling shall consist of earth or gravel free from large stones and shall be rammed with proper tools until thoroughly compacted. No flooding of these last metnioned tunnels will be re- quired. -43- TUNNEL SHAFTS9 MANHOLE SHAFTS9 ETC. The backfilling of the' shafts shall require the following method: After the tunnels have been properly backfilled, the shaft excavation where not coincident with the location of any structure, is to be filled to a depth of not greater than ten (10 feet, thoroughly flooded and allowed to settleA. The partly filled shaft shall then be filled again to a second depth of not greater than ten (10) feet, flooded and again allowed to settle. The process shall be continued until after ultimatesetting, the surface of the filled -in shaft will be at the level of the surfac of the ground. Yvhere the location of the shaft is coincident wit any structure, a similar process for backfilling shall be used during the progress of the construction of said structures, pro- vided that the outside plastering has thoroughly set. -15- • • • 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 • 29 30 31 • 32 -44- SURPLUS MATERIAL Surplus material not required in refilling the trench or tunnel shall be promptly removed by the Contractor as the back - filling progresses and disposed of by him. -45- UNGRADED STREETS Whenever the sewer is built in any ungraded street, the trench shall be refilled to the original surface of the street; provided, however that there shall not be less than three (3) feet of earth over the sewer; and, provided further, that where a fill is required on which to construct the sewer, the fill shall be made of good, sound earth, built up in layers, not more than one (1) foot thick, and the layers thoroughly compacted by rolling or tamping; the width and side slopes of such fill will be shown on the Profile and Plan. Where the trenches do not supply sufficient material of the proper quality for making the fill, the Contractor shall supply the deficiency. -46- RESQORATION OF SURFACE OVER SEWERS In all public streets, alleys or otherpublic places, and in sewer rights of way, the surface over and adjacent to the sides of the trenches shall, after being backfilled and prepared as specified in Section 41 of these specifications be restored by the Contractor without delay in a workmanlike manner with the same class of materials and constructkd in the samemanner as the sur- facing or paving that was in place before the construction of the sewers.was commenced. -47- REINFORCING STEEL All steel for reinforcement bars shall be made by the open hearth process, and shall be rolled from billets of new steel; they shall be straight and free from seams; flaws, cracks and im- perfections of all kinds. Bars shall be protected at all times from mechanical injury and from the weather and when placed in the work they shall be free from dirt, scale, rust, paint and oil. All bars shall be bent to the shapes shown on the plans and in conformity with approved templets, and placed and spaced as shown on the plans and be securely held in their positions by ap- proved devices until the concrete has been placed around them. -48- PUMP.TS The Contractor shall furnish and install in the location indicated on the plans of the pumping stations, bottom suction, vertical, submerged, centrifugal type pumps with balanced open impellers of the capacity designated on the plans. The motors shall be of the hourse power designated on the plans to suit available current, they must operate continually without any signs of sparking or o erload and must not show a ris -16- • 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 • 29 30 31 • 32 in temperature of more than 40 degrees above surrounding atmospher, They shall be of the vertical type with enclosed top heads and self oiling bearings. Pumps are to be directly connected to motors by flexible couplings immediately below the motors. They shall be suspended from the floor of the pump room by flanged pipe hangers in which pump shafts shall be enclosed and which shall not be used as disch; pipes. Pump shafts and impellers shall be supported by genuine babbit thrust and guide bearings and intermediate guide bearings inserted in hanger pipes in all cases where depth of basin is six (6) feet or over. All bearings shall be supplied with grease by one compression grease cup located above the floor line. Suction of pumps shall be fitted with a heavy iron strainer of large area. Discharge connections shall be furnished and installed with all proper fittings and property mounted on floor of pump room with flanged pipe hangers. Automatic Controllers shall be mounted on the floor of the pump room and shall include automatic float switchesq operated by copper floats with guided brass rods, float pipesq knife switches and fuses, phase protective devices for polyphase motors and re- sistance starters if size of motors requires them. Space must also be provided on the controller panel for meter. Stuffing boxes and gaskets must be provided in all cases to make the floor of the pump room gas tight. The contractor shall furnish and make all electical con- nections complete in every respect ready to connect with the meter, in accordance with the specifications of the National Board of Fire Underwriters. -49- SEPTIC TANK AND PUMPING STATIONS Septic Tank and pumping stations shall beconstructed in accordance with the materials specified on the plans and details and in the manner and of the dimensions shown onsaid plans. The concrete shall be placed in continuous operations and in such a m� ner that all wallsq floordq etc. are secruely bonded and forming a homogeneous mass, well finished and in every respect complete and in accordance with the requirements contained in these speci- fications as to materials, mixing and lgying5 excepting as may be otherwise specifically designated on the plans. -50- The City Clerk shall certify to the passage of this Resolu- tion and shall cause the same to be entered in the Book of Reso- lutions and a minute of the passage thereof in the records of the Board of Trustees of the meeting at which it was passed. Passed and approved this 10th day of June, 1918. Attest: J. Royal Lemon_ City Clerk resident of the -17- rd of Trustees w *• 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 • 29 30 31 • 32 c j STATE OF CALIFORNIA ) COUNTY OF ORANGE ) ss CITY OF NEV;PORT BEACH ) Iq J. Royal Lemon, City Clerk of the City of Newport Beach, do hereby certify that the foregoing Resolution No. 97 was passed by the Board of Trustees of the City of Newport Beach on the 10th day of June, 1918, by the following vote, to wit: AYES9 COUNCILMEN: J. P. Greeley, J. J. Schnitker, Geo. P. Wilson, J. C. McCain, L. S. Wilkinson NOES9 COUNCILMEN: None ABSENT, Trustees: None J. Royal Lemon City Clerk of the City of Newport Beach -18- STATE OF CALIFORNIA ) 00 COUNTY OF ORANGE ) ss CITY OF NEWPORT BEACH) I, C. K. PRIEST, City Clerk of the City of Newport Beach, California, do hereby certify that according to the records of the City of Newport Beach filed and main- tained in my office, the foregoing Resolution No. 97 was duly and regularly adopted, passed, and approved by the City Council of the City of Newport Beach, California, at a regular meeting of said City Council held at the regular meeting place thereof, on the 10th day of June y , 19 18 , by the following vote, to wit: AYES, COUNCILMEN: J. P. Greeley, J. J. Schnitker, Geo. P. Wilson= J. C. McCain L. S. lA lkinson NOES, COUNCILMEN: None ABSENT COUNCILMEN. None Dated this 25 day of March , 1955 City Clerk and Ex- Officio Clerk of the City Council, City of Newport Beach, State of California. w