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CC RESOLUTION 570RESOLUTION N0. 570 A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF EL SEGUNDO, CALIFORNIA, ADOPTING SPECIFICATIONS NUMBER C -1941 FOR SANITARY SEWERS IN SAID CITY. The City Council of the City of E1 Segundo, California, does resolve, declare and determine as follows: SECTION 1. That the following specifications, being and to be known as "Specifications of the City of E1 Segundo, California Number C -1941" ( "Specifications for Sanitary Sewers "), be, and the same are hereby adopted: "SPECIFICATIONS OF THE CITY OF EL SEGUNDO$ CALIFORNIA NUMBER C -1941 ('SPECIFICATIONS FOR SANITARY SEWERS') -1- MATERIALS CEMENT: All cement used, when not otherwise qualified, shall be Portland Cement and shall conform to the 'Standard Specifications and Tests for Portland Cement', (Serial Designation C9 -40) of the American Society for Testing. Materials. AGGREGATES: Aggregates shall be clean, well - graded and water - washed. Pea gravel and crushed rook shall be hard, durable and of a quality satisfactory to the Engineer. All aggregates shall be free from clay, loam, mica, organic materials, or other impurities. Unless otherwise specified, sand shall, when dry, pass a one - fourth (1/4) inch screen with not more than thirty per cent (30%) of the bulk passing a 30 -mesh sieve, and not more than sixty per cent (60%) pass- ing a 100 -mesh sieve. Gravel and crushed rook all shall pass a one inch ring with not more than twenty -five per cent (25 %) being retained upon a three - fourths (3/4) inch sieve. 1- Nominal proportions of the aggregate shall be as specified on the drawings for each portion of the work. MORTAR: All mortar, unless otherwise specified, shall be composed of 1 volume of cement and 2 volumes of sand. For purposes of measurement a barrel of cement shall be considered 3.8 on* ft, and a sack of cement equal to 1 on* ft. The water used in preparing mortar shall be clean and free from sewage. The ingredients first shall be thoroughly mixed dry in a suit. able tight box, after which the proper quantity of clean water gradually shall be added, and then the materials shall be hoed or worked until a uniform mixture is secured. No greater quan- tity of mortar is to be prepared than is required for immediate use and it shall be worked over constantly with hoe or shovel until used; any that has set shall not be retempered or used in any way, and no mortar shall be used which has been mixed for longer than 1 1/2 hours prior to such use. Mortar taken from the mixing troughs and molded into briquettes 1 in. square in oross- seotion shall have an ultimate tensile strength of 125 lbs. per square inch after one day in the air and six days in water, and 175 lbs. after one day in air and 27 days in water. IRON CASTINGS: All castings for manhole heads, covers, and/or other purposes must be of tough gray iron, free from cracks, holes, swells and cold - shuts, and be of workmanlike finish, and must conform to the plans. The quality shall be such that a blow from a hammer will produce an indentation on a rectangular edge of the casting without flaking the metal. 2- Before leaving the foundry all castings shall be thoroughly cleaned and subjected to a hammer inspection, after which they shall be dipped twice in a preparation of asphalt, or coal tar and oil applied at a temperature of not less than two hundred and ninety (290) degrees F., nor greater than three hundred and ten (310) degrees F., in such a manner as to form a firm and tenacious coating. VITRIFIED CLAY PIPE AND SPECIALS: All vitrified pipe and specials shall be first quality, salt - glazed vitrified clay or stoneware, of the dimensions stated in the Southern Cali- fornia Specifications as recognized by the Clay Products Institute of America. The Engineer shall designate on the plans where standard, double- strength or deep - and -Vide socket pipe shall be used. All pipe and specials must be free from injurious cracks, checks, blisters, broken extremities or other imperfections. The pipe must be smooth and its interior surface must be thor. oughly glazed. All pipe, when broken, shall show dense and solid material without detrimental laminations; it shall be of such quality that it can be out with a chisel and hammer, and skull give a metallic ring when struck with a hammer. All pipe shall be clearly marked with the name of the manu- faoturer or a trade mark. Caps shall be furnished with each branch pipe and shall consist of a diso of the same material as the pipe, three- fourths (3/4) of an inch thick, fitting snugly the socket of the branch pipe. The tests for vitrified clay pipe shall be as follows: 11 Hydrostatic Pressure Test. 2. Sand Bearing Loading Test. 3- The Engineer may select at random and test as herein specified one length of pipe for each four hundred (400) feet or fraction thereof of each size of pipe to be laid. The pipe selected for testing purposes shall be delivered by the Contractor for the improvement, when and where directed. If, in making either of the tests above mentioned, eighty (80) per cent or more of the specimens tested meet the re- quirements imposed by that test, all of the pipe in the shipment or delivery corresponding to sizes so tested shall be considered as complying with the test. If, however, more than twenty (20) per cent of the specimens tested fail to meet the requirements of either test, a second selection of pipe shall be made for that test. The number of pipe to be tested in the second selection of pipe shall be five (5) for each pipe that failed to meet the require- ments of the first selection. If eighty (80) per cent or more of the pipe selected, inolufl ing those first selected, meet the requirements of that test, all of the pipe corresponding to the sizes so tested shall be considered as complying with that test, otherwise all pipe of those sizes shall be rejected. Unless otherwise specified herein, the specimens of pipe shall be sound pipe having dimensions consistent with these specifications. All tests made hereunder shall conform to methods as specified in the Southern California Specifications as re- oognized by the Clay Products Institute of America. CAST IRON PIPE: All oast iron pipe shall be of the best quality of water pipe, furnished in twelve (12) or sixteen (16) foot lengths, and of the class and character specified on the plans. �M COMMON BRICK: When the word brick occurs on the plans with. out specifying 'Common' or 'Vitrified' it shall mean common brick. Common brick, unless otherwise indicated in the plans, shall conform to the following: They shall be whole, sound, hard- burned clay with straight edges and must give a clear, ringing sound when struck together. They shall be uniform in quality, and shall be culled or sorted before delivery. They shall have rectangular surfaces and shall not be less than eight and one- eighth (8 -1/8) inches nor more than eight and three - eighths (8 -3/8) inches in length, nor lose than three and five - eighths (3 -5/8) inches nor more than three and seven- eighths (3 -7/8) Inches in width, and not less than two and one - quarter (2 -1/4) inches nor more than two and three- eighths (2 -3/8) inches in thickness. All brick may be subject to the following test made by the Engineer on brick sampled at the brick yard or on the job as he may selects Three or more bricks selected at random from a given lot shall be broken across and the separate pieces placed on edge, faced top and bottom with plaster of Paris and crushed. The average maximum load shall be not less than two thousand (2000) pounds per square inch# and no individual load shall be less than one thousand (1000) pounds per square inch. Fail.. ing to satisfy the test, the brick from which the samples for the test were selected, shall be rejected. 0 VITRIFIED MICR: Vitrified brick shall conform to the requirements for common brick, except that the compressive test shall not be required, but the following absorption test shall be substituted therefor: Three or more bricks, selected at random from a given lot, shall be broken across, dried to a constant weight, weighed, then immersed in water for twenty —four (24) hours and weighed again. The absorption shall be determined by the differ. enoe between the wet and the dry weights, and if such difference exceeds four (4) per cent of the dry weight, the brick from which such samples for the test were selected, shall be rejected. MANHOLE FLUSHING MECHANISM: Where flushing manholes are required, the mechanism shall be of the siphon type as manufactured by the Pacific Clay Products Company under the trade name of 'Centrielphon', or equal, and in all oases shall be subject to the approval of the Engineer. MANHOLE STEPS: Manhole steps shall be of three— quarter (3/4) inch diameter round steel bar coated with asphaltum or coal tar paint. —II.. CONSTRUCTION. EXCAVATION: The sewer shall be laid in an open trench or in a tunnel and, except where otherwise indicated on the plans, must be laid in open trenches unless permission to tunnel is given by the Engineer. The trench shall not be opened more than three hundred (300) feet in advance of the sewer laying, nor left unbackfilled for more than two hundred (200) feet in the rear thereof, unless otherwise permitted by the Engineer. M In bad ground, such as running sand, the work shall be pro - eecuted vigorously day and night without interruption, when so ordered by the Engineer. Trenches for house drains shall not be opened on both sides of the street at the same time unless permission previously has been obtained to close the street. The width of the trench at approximately the top of the pipe shall not exceed the outside diameter of the barrel of the pipe plus sixteen (16) inches. 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 the placing of the sewer invert, together with the concrete foundation if any such foundation is specified on the plan or profile of said sewer. Where the nature of the ground will permit, the bottom of the excavation for sewers formed in place in the trench must con- form to the outside of the lower half of the sewer. The excavation for all brick manholes and other brick structures shall be sufficient to leave at least six (6) inches in the clear between their outer surfaces and the sides of the exec• vation for timbering which may be used to protect the same. All existing gas pipes, water pipes, electric conduits, sewers, drains, hydrants, railway tracks and other structures which do not, in the opinion of the Engineer, require to be changed in location, shall be carefully supported and protected from in- jury by the Contractor, and in case of injury they shall be restored by him, without additional compensation, to as good condition as that in which they are found. Where pipes or conduits are removed from the trench, leaving dead ends in 7.. the ground, such ends carefully shall be plugged or bu].k- headed with brick and mortar by the Contractor, without additional compensation. When it becomes necessary, in to change the location of any not otherwise provided for in Contractor shall do the whole changes or such portions of i and the work will be paid for the opinion of the Engineer, sewer, drain or other structures, these specifications, the of the work of making such t as the Engineer may direct, as extra work. The Contractor shall provide without additional compensation suitable temporary channels for the water that may flow along or across the site of the work. Where existing driveways occur on a street the Contractor shall make provision for ditch crossings at these points, either by means of backfills or temporary bridges as the Engineer may direct. It is the intention to leave all paved surfaces over or adjacent to the sewer at the close of the work in good con- dition, and to that end the Contractor will be required to remove carefully and conserve free from any admixture of other materials all surfacing and paving materials and curbing disturbed. Unless permission is given to the contrary, the material excavated from the trench and the materials of construction shall be so deposited and the work shall be so conducted as to leave open and free for pedestrian traffic all crosswalks, a space on each sidewalk not less than one -third of the width of the sidewalk and not less than 3 ft* in width, and for vehicular traffic a roadway not less than 8 ft. in width. All street hydrants, water gates, and letter boxes shall be 0 kept accessible for use. During the progress of the work the Contractor shall maintain crosswalks, and roadways in satisfactory condition, and the work shall at all times be so conducted as to cause a minimum of inconvenience to public travel, and to permit safe and convenient access to private and public property along the line of the work. Lawns on which excavated material is placed or walls which support it must be protected by planks or canvas. If all excavated material cannot be stored on the street In such a manner as to maintain the traffic conditions specified herein, the surplus shall be removed from the work and stored. After the construction of the sewer, so much of this material as is of satisfactory quality and necessary for the purpose shall be brought back and used for backfilling the trench. Spoil banks of surplus ex- cavated material shall be located as directed by the Engineer. When required by the Engineer, suitable fences shall be placed along the sides and ends of the trenches to keep the streets safe for traffic. SHORING: The Contractor shall furnish, put in place and maintain such sheathing, bracing, eto., as may be required to support the sides and roof of the excavation and to pre- vent any movement which can in any way injure the masonry, diminish the necessary width of the excavation, or otherwise Injure or delay the work or endanger adjacent pavements, buildings or other structures. If the Engineer is of the opinion that at any points, sufficient or proper supports have not been provided, he may order additional supports put in at the expense of the Contractor, and the compliance with such orders shall not release the Contractor from his re- sponsibility for the sufficiency of such supports. C are Fm shall be taken to prevent voids outside of the sheathing, but if voids are formed they shall be immediately filled and rammed to the satisfaction of the Engineer. For the purpose of preventing injury to persons, corporations or property, whether public or private, the liability for damages on account of which is to be assumed entirely and solely by the Contractor under this contract, he may also leave in place to be imbedded in the backfill of the trench any and all sheathing, bracing, etc., in addition to that shown on the drawings or ordered in writing by the Engineer to be left in place, except that no sheathing and bracing which is within 4 ft. of the surface of the street may be left in the trench without written permission from the Engineer. All sheathing and bracing which may not be left in place under the foregoing provisions of this agreement shall be removed in such manner as not to endanger the constructed sewer or other structures, utilities or property, whether public or private. A 11 voids left or caused by the with- drawal of sheathing shall be immediately refilled with sand, by ramming with tools specially adapted to that purpose, by watering or otherwise as may be directed. The right of the Engineer to order sheathing and bracing left in place shall not be construed as creating any obliga. tion on his part to issue such orders, and his failure to exercise his right to do so shall not relieve the Contractor from liability for damages to persons or property occurring from or upon the work of constructing the sewer occasioned by negligence or otherwise growing out of failure on the part of the Contractor to leave in place in the trench sufficient sheathing and bracing to prevent any caving or moving of the ground adjacent to the banks of the trench. 10- For sheathing and bracing which is shown upon the drawings to be left in place either in tunnel or in trench, the Contractor shall receive no payment, it being understood and agreed that his compensation therefor is included in the price to be paid for excavation and refill. PUMPING. BAILING AND DRAINING: The Contractor shall remove by pumping, bailing or otherwise,any water which may accumulate or be found in the trenches and other excavations made under this contract, and shall form all dams, flumes or other works necessary to keep them entirely clear of water while the sewers and their foundations, if any, are being constructed. Newly laid masonry shall be protected from injury, resulting from the unwatering work and plant, by the use of canvas, tar paper or by such other sufficient methods, as may be approved. The Contractor shall at all times have upon the works suffi- cient pumping machinery ready for immediate use. Water from the trenches and excavations shall be disposed of in such a manner as will not cause injury 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. BAC&FILLING: Unless otherwise directed, all trenches and excavations shall be baekfilled as soon as the cement in the structures placed therein has acquired a suitable degree of hardness, and the work shall be prosecuted expeditiously after it has been commenced. For a depth of at least 2 ft. over the top of sewers, basin connections, house connections and other drains, the material used for backfilling trenches shall be clean earth, sand or rock dust. In the case of pipe sewers, the space between the 11- pipe and the bottom and sides of the trench shall be packed full by hand and thoroughly tamped with a shovel or light tamper, as fast as placed, up to the level of the top of the pipe. The filling shall be carried up evenly on both sides. The pipe shall then be covered by hand to a depth of at least 2 ft, above its top, and at least one man en.. gaged in tamping shall be provided for each man shoveling filling into the trench. The material shall be deposited carefully in the trench to avoid injuring the sewer, and in case it is placed in layers these shall not exceed 6 inches in thickness and each shall be carefully and solidly tamped with appropriate tools in such a manner as to avoid injuring or disturbing the completed sewer. When sheathing is drawn, all cavities remaining in or ad, joining the trench shall be solidly filled. When sheathing is left in place, all cavities behind such sheathing shall be solidly filled. Backfilling within 2 ft. of manholes, catch- basins, flush - tanks and other special structures shall be of the same quality as that specified in this section. It shall be uniformly deposited on all sides and, unless otherwise per- mitted, solidly tamped in such a manner as to avoid injuring the structures or producing unequal pressures on them. The earth above all short tunnels connecting sections of open trenches shall be out through to the surface of the ground for the full width of the excavation where so indicated on the plans. Where not so indicated, the earth above all said short tunnels shall be out to a "V" shape, having the point of the "V" at the center of the top of the tunnel and the slope of the "V" making an angle of not less than forty- five (45) degrees with the horizontal. The backfilling shall 12. then be completed in layers not more than five (5) feet in depth to the surface of the ground, each layer being thoroughly settled by flooding with water. In flooding the manner of applying the water and using the bars shall be done as directed by the Engineer, until the fill has been thoroughly compacted. BRICK MASONRY: All brick shall be thoroughly wetted immediately before being laid, either by immersion or in such other manner as is acceptable to the Engineer. Old brickwork shall be cleaned and wetted before laying new work on it. Every brick is required to be laid in a full and close joint of Portland cement mortar composed of 1 part cement and 2 parts sand, on its bed, end and side at one operation. The joints on the inside face of work shall not exceed 1/4 in. in thickness and in no case shall mortar be slushed in afterward. Care shall be taken to have every joint full of mortar. Upon removal of the centers, if any open joints are found they shall be pointed. Special care shall be taken to make the face of the brick work smooth, and all joints on the interior surface of the invert of the sewer shall be carefully struck with the point of the trowel, or pointed to the entire satisfaction of the Engineer. The work in all oases shall be well and thoroughly bonded, and If the manner is specified or shown on the drawings it shall be done in close adherence to it. Brickwork as it progresses may be toothed, but when ordered it shall be racked back in courses. CONCRETE: All materials composing concrete shall be pro- portioned in accordance with the note on the plans for the specific use of said concrete. 13- Concrete shall be mixed in convenient quantities and imme- diately deposited in the work. No concrete shall be laid in water, nor shall water be permitted to rise on it within 24 hours after it is placed, nor shall water be allowed to run over completed masonry before 4 days. Unsatisfactory concrete shall be rejected and replaced, if directed by the Engineer. The Contractor shall keep all concrete masonry wet by sprinkling with water or covering with wet cloths, until it shall have become thoroughly set and hard enough to prevent its drying and cracking. Sufficient tarpaulin or other covering shall be provided to protect fresh work from the action of the elements. LAYING VITRIFIED PIPE: The pipe lines shall be con - struoted of pipes of such sizes and laid to such lines and grades as are shown on the drawings, or as directed by the Engineer. The joints shall be of either Portland Cement Mortar or Asphalt Compound, as specified on the plans. When joints are made up with Portland Cement Mortar there shall be added to the cement and sand sufficient water to thoroughly dampen the mixture, which said Mortar shall then be firmly caulked into the bell of the pipe with a hardwood stick. A fillet of cement mortar shall be placed against the face of the bell. Where there are indicated on the plans water -tight and root -proof joints, the joints shall be re- caulked and re- trowelled approximately 1/2 hour after first being made. When joints are made up with asphalt compound, the jointing material shall be G.K. Compound as manufactured by the Atlas Mineral Products Company, or equal. G. K. Compound shall 14- be melted in special kettles which permit the maintenance of a temperature of approximately 400 degrees Fahrenheit. The joints first shall be prepared for pouring by the caulking of jute into the annular space to a sufficient depth to insure the closing of the open space between the ends of the pipe. The depth of jute shall not exceed one - half (1 /2) inch in 4 inch diameter pipe not one (1) inch in 36 inch diameter pipe, intermediate sizes being caulked with proportionate amounts. The outside of the bell shall be closed with a running rope or rubber hose as commonly used in pouring hot joints. In either case the runner shall be closed at the top in such a way that a pouring gate is left through which the compound may be poured into the bell. When the sewer is to be laid without *(cradle, the earth form- ing the bed shall be carefully freed of stones. The pipe shall then be evenly bedded in the earth over the lower third of its circumference, great care being taken to remove only enough of the earth to leave a uniform support for the entire length of the pipe, except the bell, under which a recess shall be excavated to a sufficient depth to relieve it of any load and allow ample space for making the joint. In case the bed trimmed in the bottom of the trench is too low, earth shall be thrown into the bottom and thoroughly rammed, and a new bed trimmed for the pipe. It is forbidden to raise the grade of the pipe by ramming earth beneath it. When the pipe has been bedded satisfactorily and the joint made, the recess under the bell shall be re- filled with earth and enough earth shall be refilled and temped on each side of the pipe to hold it securely in place, care being taken not to disturb the position of the pipe during this process. 15- The faces of all spigot ends and of all shoulders in the hubs or sockets must be true and brought into fair contact, and all lumps and excreseenoes on said faces shall be out away before the pipe is lowered into the trench. The pipe shall be laid, without break, uphill from struc.. ture to structure, and with socket end up grade, unless otherwise permitted by the Engineer. In all cases the mouth of the pipe shall be protected by a board or other blockade fitted to the pipe so as to prevent earth and other substances from entering. In no case shall water be allowed to rise in or about the pipe before the cement of the point has become thoroughly set. No walking on or working over the pipes after they are laid, except as may be necessary in tamping the earth and refilling will be permitted until they are covered with earth to a depth of 12 inches. Branch pipe shall be provided and laid as and where directed. Open ends of pipe and branches shall be sealed with stoneware stoppers, cemented into place in an acceptable manner. The branches shall be laid so that the tap is on an angle of 450 above the horizontal, unless directed otherwise. Main sewers will be measured horizontally from center to center of structures, along the center line of the sewer, including all specials. House connection sewers will be measured from the center of main sewer to the upper end of the house connection sewer. Unless otherwise qualified by conventional signs, all dis- tances, frontages and elevations shown on said plans, pro- files or other drawings, are in feet; elevation being above the city datum plane of the City of E1 Segundo. 16. MANHOLES AND FLUSH- TANKS: Manholes of every type shall be built into the sewers of the size, form, thickness and in the positions shown in the drawings, and they shall be carried up to within 6 inches of the established grade or to some other elevation, as directed. Brick manholes shall be built from templets placed at top and bottom to guide the work, with not less than eight lines drawn between them, unless the Engineer authorizes the omission of their use. The connection with the arch must be true and secure, and in the manner shown on their drawings. The joints are to be neatly struck and pointed on the inside, and the outside of the brickwork must be neatly plastered with cement mortar as the work progresses. Iron steps of the dimensions shown In the drawings are to be built into the brickwork or concrete 17 inches apart vertically, unless otherwise indicated in the drawings. They shall be coated with red lead paint or coal tar varnish. Unless otherwise indicated, every manhole shall be provided with a cast iron frame and cover of the dimensions and weight shown in the drawings. The covers shall be free from im. perfections, thoroughly cleaned, and if so ordered be provided with a galvanized bucket of the dimensions shown In the drawings. The weights of the castings shall be certified by the foundry furnishing them. The cover shall have a continuous and even bearing on the frame, and be properly set to avoid rocking. All inequalities, projections or roughness on abutting surfaces of the cover and the frame shall be removed, and the cover fitted into the frame as neatly as possible without jamming. Flush -tanks or flushing - manholes shall be equipped with flush, 1ng equipment as specified on the drawings and shall be con, 17- structed at the upper end of each sewer. The City of E1 Segundo Water Department will lay all water lines and make all water connections to all flush - tanks.% SECTION 2. That the City Clerk shall certify to the passage and adoption of this resolution; shall enter the same in the book of resolutions of said City, and shall make a minute of the passage and adoption thereof in the records of the proceedings of the City Council of said City in the minutes of the meeting at which the same was passed and adopted. Passed, approved and adopted this 23rd day of July, A. D., 1941. AT EST: City Clerk (SEAL) i Mayor of the City of E1 Segundo, California. �_-� -_W STATE OF CALIFORNIA ) COUNTY OF LOS ANGELES ) SS CITY OF EL SEGUNDO ) I, Victor D. McCarthy, City Clerk of the City of El Segundo, California, do hereby certify that the whole number of members of the City Council of the said City is five; that the foregoing resolution, being Resolution No. 570, was passed and adopted by the said City Council, approved and signed by the Mayor of said City and attested by the City Clerk of said City, all at a regular meeting of the said Council held on the 23rd day of July, A. D., 1941, and that the same was passed and adopted by the following vote, to -wit: AYES: Councilmen Gerow, Hesser, Love and Mayor Binder; NOES: Councilmen None; ABSENT: Councilman Selby. (SEAL) ity Clerk of the Mty of E1 Segundo, California. BYW 19..