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<br /> <br />Forward Compost Facility Stormwater Improvements 02535 3 PIPES <br />PART 3 EXECUTION <br /> <br />3.1 GENERAL <br /> <br /> A. All polyethylene pipe shall be cut, fabricated, and installed in strict conformance <br />with pipe manufacturer's recommendations. Joining, laying, and pulling of <br />polyethylene pipe shall be accomplished by personnel experienced in working <br />with polyethylene pipe. <br /> <br /> B. Pipe shall be joined and placed in such a manner as to prevent damage to the <br />HDPE Geomembrane Lining and other underlying geosynthetics. <br /> <br /> <br />3.2 TRANSPORTATION <br /> <br /> A. Care shall be taken during transportation of the pipe such that it is not cut, kinked, <br />or otherwise damaged. <br /> <br />3.3 STORAGE <br /> <br /> A. Pipes shall be stored on level ground, preferably turf or sand, free of sharp objects <br />that could damage the pipe. Stacking of the polyethylene pipe shall be limited to a <br />height that will not cause excessive deformation of the bottom layers of pipes <br />under anticipated temperature conditions. Where necessary due to ground <br />conditions, the pipe shall be stored on wooden sleepers, spaced suitably and of <br />such widths as not to allow deformation of the pipe at the point of contact with the <br />sleeper or between supports. <br /> <br />3.4 HANDLING PIPE <br /> <br /> A. The handling of the joined pipeline shall be in such a manner that the pipe is not <br />damaged by dragging it over sharp and cutting objects. Ropes, fabric, or <br />rubber-protected slings and straps shall be used when handling pipes. Chains, <br />cables, or hooks inserted into the pipe ends shall not be used. Two slings spread <br />apart shall be used for lifting each length of pipe. Pipe or fittings shall not be <br />dropped onto rocky or unprepared ground. Slings for handling the pipeline shall <br />not be positioned at butt-fused joints. Sections of the pipes with cuts and gouges <br />exceeding 10 percent of the pipe wall thickness or kinked sections shall be <br />removed and the ends of the pipeline rejoined. <br /> <br />3.5 JOINING PIPE SECTIONS <br /> <br /> A. Pipes shall be joined to one another, to the polyethylene fittings, and to the flange <br />connections by means of thermal butt-fusion. Polyethylene pipe lengths, fittings, <br />and flanged connections to be joined by thermal butt-fusion shall be of the same <br />type, grade, and class of polyethylene compound and supplied from the same raw <br />material supplier. <br />