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Tensile Strength,yield D 638-89 2,600 psi <br /> ® Vicat Softening Point D 1525-87 248° F <br /> Brittleness Temp D 746 - 180° F <br /> Flexural Modulus D 790 100,000— 110,000 psi <br /> B. The polyethylene compound shall be suitably protected against degradation by <br /> ultraviolet light by means of carbon black, well dispersed by precompounding in a <br /> concentration of not less than 1.5 percent. <br /> C. The HDPE tanks shall meet the requirement, sizes, and perforation pattern shown <br /> on the construction drawings. <br /> PART 3 EXECUTION <br /> 3.1 GENERAL <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 /> 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 /> 3.2 TRANSPORTATION <br /> A. Care shall be taken during transportation of the pipe such that it is not cut,kinked, <br /> or otherwise damaged. <br /> 3.3 STORAGE <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 /> 3.4 HANDLING PIPE <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 /> Forward Landfill WMU FU-13 <br /> 02535 3 LEACHATE PIPES <br />