06-J Cox Field Water Main - Laserfiche WebLink

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16 and ~4" pipe 5.0' cover 12" and 0" pipe 4.5' cover 8" pipe The subgrade shall be a section, when in place, shall have a un Pipe shall not be laid unless the subgrai Pipe to line and grade shall be made by or blocking up the bell. The interior of the pipe is lowered into the trench. Each pipe, true to line and grade. 2012.04 2000 psi concrete sh pipelines in such manner as will brE Concrete blocking shall have been in Concrete blocking will not be measu in the various items listed in the Pro 2012.05 T'ESTING After the pipe has such sections approved by the equipment. The entire length of tt manner: The section of the line to be is required for the cement lining of th the line. During the filling of the li bullcheads, valves, manholes, connect leakage. Al] known leaks shall be st The test shall consist percent of the working pressure fo occurring in the section being tested be maintained for a period of four (4 the test pressure shall be accurately smaller 4.0' cover irately shaped and trimmed to receive the pipe barrel and each pipe rm beazing on the subgrade for the full length of the pipe barrel. is free of water and in a satisfactory condition. Adjustments of the raping away or filling in with granulaz material, and not by wedging be clean and joint surfaces shall be clean and dry when the pipe es, and valve shall be lowered into the trench carefully and laid be placed for blocking at each change in direction of all pressure the pipe against undisturbed trench walls as shown on [he plans. ice four (4) days prior to testing the pipeline as hereinafter specified. or paid for as a sepazate item, but the cost thereof shall be included ial and Bid Schedule. laid for at least seven (7) days pressure pipelines shall be tested in eer. The Contractor shall furnish all labor, materials, tools and installed line shall be field tested for water tightness in the following -sted shall be filled with water and allowed to stand for such time as pipe to absorb such water as it will and for the escape of all air from ; care shall be exercised to see that all air vents are open, and all ins, etc., in the section undergoing test shall be cazefully examined for )ped, regardless of these test requirements. 'raising and holding the hydrostatic pressure in the test section of 120 which the pipe was designed, which pressure shall be the highest ot to exceed the design pressure of the pipe. Such test pressure shall hours, during which time the water pumped into the line to maintain easured in a manner satisfactory to the City. Leakage during the above test shall not exceed a rate equal to 25 gallons per inch of intemal pipe diameter per mile per 24 hours. In the event any section of ]ine tested fails to meet the above specified requirements for water tightness, the cause of the excessive leakage shall be deternilned and remedied to the Item 2012-2