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SANITARY SEWERS 02 7300-11 C. Alignment: All pipe shall be accurately laid in conformity with the prescribed lines and grades as established by the ENGINEER. Each length shall be jointed to the preceding section as specified, and after said jointing has been completed, there shall be no movement of the pipe in subsequent operations. D. Pipe Deflections: The laying of pipe on curved alignment by means of un- symmetrical closure of joints, will be permitted only when necessary to conform to the alignment shown on the plans. Grade breaks indicated on the plans shall be accomplished by un-symmetrical closure of pipe and NOT by means of fittings. Joint deflections called for on the plans shall be permitted up to one-half of the deflections recommended by the pipe manufacturer. E. Cleaning: Before each new length of pipe is placed, the interior of the preceding pipe shall be carefully cleaned of all dirt and debris. When pipe laying is not in progress, all open pipe ends shall be satisfactorily closed with watertight plugs. F. Bearing: Pipe in the trench shall have continuous uniform bearing along its bottom, except at bell holes. Before lowering pipe into the trench, the CONTRACTOR shall remove all stakes, debris, loose rock and other hard material from the bottom of the trench. G. Positioning: After the final positioning, pipe shall be held in place in the trench with backfill material placed equally on both sides of the pipe at as many locations as required to hold the pipe section in place. After joints are completed, the backfill material shall be redistributed and compacted as herein required. H. Closure: At the end of each day and when work is not in progress, all open ends of pipe installed in the line shall be satisfactorily closed with watertight plugs. I. Thrust Blocking for Force Mains: Concrete thrust blocks of the form and dimensions shown or noted on the plans shall be provided at all changes in horizontal and vertical alignments and at such other points as may be called for on the plans. Thrust blocks shall be installed in strict conformance with the details shown or noted on the plans. J. Restrained Joint for Force Mains: Install per manufacturer’s instructions. Length of restraint as shown on Drawings. Install Petrolatum Wax Tape System per Section 02 6610. K. Tracer Wire for Force Mains: Install in trench along the pipe. Splice tracer wire in accordance with manufacturer’s recommendations. Install locator balls at point of connection for all laterals. L. Use of Controlled Density Fill: At mainline trenches and lateral trenches with pipes that are 30 inches deep or less as measured from the top of pipe to existing pavement surface and at all areas where compaction is not possible shall be backfilled with controlled density fill (CDF) in lieu of Class 2 aggregate base. Other requirements shall conform to Section 02 2020 of these specifications M. HDPE Pipe Installation: The CONTRACTOR shall remove the internal bead.