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3 ) Installation of Detectable Buried Warning Tape <br /> Tape shall be tied to each valve or fitting and shall run continuously with no <br /> splices between valves or fittings . Tape shall be placed at a maximum <br /> depth of 12 inches below finished grade directly above the pipe <br /> centerline . Following placement of tape, the trench shall be backfilled with <br /> due caution to prevent displacement or damage to the tape . <br /> 4) Installation of Detectable Buried Trace Wire <br /> Trace wire shall be installed on all pipe, valve and fittings, with splices , <br /> branches , connections and terminations as shown on the plans . <br /> 5 ) Separation Requirements <br /> Water mains shall be laid at least ten ( 10) feet horizontally from any existing <br /> or proposed sanitary or storm sewer, or any other sanitary hazard . Water <br /> mains crossing sanitary hazards shall be laid to provide a minimum vertical <br /> clearance of 18 inches between the outside of the water main and the outside <br /> of the sanitary hazard. Where the water main passes under the sanitary hazard <br /> or the 18 inch clearance cannot be met, the water main shall have . a full pipe <br /> length centered on the sanitary hazard. The water main pipe section shall <br /> be ductile iron pipe or it shall be encased in a minimum of 6 inches of <br /> concrete all around . <br /> D . Field Quality Control <br /> 1 ) Hydrostatic Tests - The Contractor shall provide all necessary material and <br /> shall perform all work required in connection with the test, including <br /> temporary plugs where required. All pipe shall be tested to a hydrostatic <br /> pressure of 150 p . s . i . The required pressure as measured at the point of <br /> highest elevation shall be applied for not less than two hours , and all pipe , <br /> fittings, valves and joints shall be made water-tight if leakage is evident. <br /> No ductile iron pipe installation will be accepted unless and until the leakage <br /> is less than that as specified under Section 4 . 2 of the AWWA (ANSI) C600 , <br /> P . V . C . pipe installations shall meet the leakage requirements of AWWA <br /> M23 as applicable . <br /> E . Adjusting and Cleaning <br /> 1 . Restoring Surfaces - The top surfaces of the backfill shall be restored to the <br /> original or planned conditions . Trenches shall be carefully examined upon <br /> the completion of backfilling and surface irregularities , that are dangerous or <br /> obstructive to traffic, are to be removed . <br /> Paved sections shall conform in grade with adjacent areas and shall be of at <br /> least equal quality. Design mixes for flexible pavement shall be subject to <br /> approval by the Engineer. All damaged or undermined areas of existing <br /> pavement, not previously removed, shall be removed and restored to original <br /> conditions or in the specified manner. <br /> CADown1oad\techspec-02501 . doc SC501 - 11 <br />