Laserfiche WebLink
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 /> 3.5 JOINING PIPE SECTIONS <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 /> B. Butt-Fusion Joining: Butt-fusion of pipes and fittings shall be performed in <br /> accordance with the pipe manufacturer's recommendations as to equipment and <br /> technique. Depending on site conditions, butt-fusion joining shall be performed <br /> in or outside of the excavation at the EARTHWORK CONTRACTOR's option. <br /> 3.6 PLACEMENT IN LEACHATE COLLECTION TRENCH <br /> A. General: Care shall be exercised when lowering pipe into the trench to prevent <br /> damage or twisting of the pipe. <br /> B. Pipe Base: Pipe and fittings shall be laid directly on Coarse Gravel in leachate <br /> collection trench as shown on Construction Drawings. The trench bottom shall be <br /> carefully shaped to conform to the shape of the pipe and fittings for the bottom <br /> one-quarter of the pipe. <br /> C. Coarse Gravel Backfill: Backfill material shall be as specified in Section 02300, <br /> EARTHWORK, and shall be placed in accordance with that Section and as shown <br /> on the Construction Drawings. <br /> 3.7 CONNECTION AND REMOVAL OF LEACHATE COLLECTION PIPES <br /> A. - The EARTHWORK CONTRACTOR shall develop a leachate management plan <br /> with the OWNER, DESIGN ENGINEER, and QA/QC CONSULTANT to address <br /> the control and containment of leachate during connection and removal of LCRS <br /> pipes and trenches. <br /> B. Connect existing and new perforated HDPE pipes using appropriate coupler. <br /> Extend filter geotextile and coarse gravel as necessary to connect LCRS trenches. <br /> Overlap filter geotextile a minimum 3-feet. <br /> 3.8 PROTECTION OF PIPE <br /> Forward Landfill WMU FU-17 <br /> 02535 4 LEACHATE PIPES <br />