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SANITARY SEWERS 02 7300-18 <br /> <br />i. Sags greater than: <br />• ¼ inch for 4-inch or smaller pipe <br />• ¾ inch for 6 through 12-inch pipe <br />• 1 inch for 15 through 36-inch pipe <br />ii. Open or offset joints. <br />iii. Cracked or damaged pipe. <br />iv. Out of round pipe. <br />v. Joint infiltration. <br />vi. Debris or other foreign objects. <br />vii. Other obvious deficiencies. <br />e. The CONTRACTOR shall repair or replace failed sections as required by <br />the ENGINEER. <br />f. Those portions of the pipeline system that have been corrected must be <br />re-televised. <br />5. Force Mains <br />a. Preparation for Tests: The CONTRACTOR shall provide all necessary <br />material and equipment, and shall perform all work required in connection <br />with the testing of the force main system, as specified herein. Hydrostatic <br />and leakage tests shall be made only after the trenches have been <br />backfilled sufficiently to hold the pipe firmly in position. Hydr ostatic tests <br />for sewer force mains shall be made on all sections to a hydrostatic <br />pressure of 150 psi. Excess pressure will not be permitted. Each section <br />of pipe to be tested shall be slowly filled with water using care to expel all <br />air. Water shall be allowed to stand in the pipe for 24 hours before test <br />pressure is applied. <br />b. Test Procedure: The required pressure as measured at the lowest <br />elevation, shall be applied for not less than one hour. Any leakage <br />discovered in consequence of the pressure test shall be corrected, and <br />the test shall be repeated until satisfactorily completed. Any defective <br />pipe, fittings, or valves, shall be repaired or replaced. <br />c. Allowable Leakage: No section of force main will be accepted until the <br />leakage is less than 15 U.S. gallons per 24 hours per mile of pipe per inch <br />of internal pipe diameter.