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• i O compaction equipment will not have a damaging effect on the pipe. Equipment used in cornpacting the initial 3 -ft backfill shall be approved by the pipe manufacturer's representative prior to use. s, Good alignment shall be preserved during installation. The deflection at joints shall not exceed that recommended by manufacturer. Fittings, in addition to those shown on the Drawings, shall be provided, if required, in craising utilities, which may be encountered upon opening the trench. T. Each length of the pipe shall have the assembly mark aligned with the pipe previously laid and held securely until enough backfill has been placed to hold the pipe in place. Joints shall not be,, pulled" or "crampcd". U Before any joint is made, the pipe shall be checked to assure that a close joint with the next adjoining pipe has been maintained and that the inverts are matched and confonn to the required grade. The pipe shall not be driven down to grade by striking it. V. Precautions shall be taken to prevent flotation of the pipe in the trench. W. When moveable trench bracing such as trench boxes, moveable sheeting, shoring or plates are used to support the sides of the trench, care shall be taken in placing and moving the boxes or supporting bracing to prevent movement of the pipe, or disturbance of the pipe bedding and the backfill. Trench boxes, moveable sheeting, shoring or plates shall not be allowed to extend below top of the pipe. As trench boxes, moveable sheeting, shoring or plates are moved, pipe bedding shall be placed to fill any voids created and the backfill shall be recompacted to provide uniform side support for the pipe. X. Concrete thrust blocks shall be installed at all fittings and other locations as directed by the Engineer. minimum bearing area shall be as shown on the Drawings. Concrete shall be " placed against undisturbed material and shall not cover joints, bolts or nuts, or interfere with the removal of any joint. Wooden side forms shall be provided for thrust blocks. Y. Restrained joints shall be installed where shown on the Drawings or as directed by the Engineer. I _ 0 2.7 'TESTING A. All YIDPE force mains shall be field-tested. supply all labor, equipment, material, gages, t pumps, meters and incidentals required for testing. Pressure test each force roam upon completion of the pipe laying and backfilling operations, including placement of any required p temporary roadway surfacing. All force mains shall be tested at l5o percent of the operating design pressure of the pipe unless otherwise approved by the Engineer. The operating design pressure of the pipe is 100 psi. The test pressure shall be measured at the highest point along the test section by a recording type pressure gage and a copy of the readout shall he submitted to the Engineer upon completion of the test. All testing shall be conducted in the presence of the Engineer or his/her designated representative. 'resting shall be conducted after hackfilling has been completed and before placement of permanent surface. 15080A • b I . :on—AUA—. P.,Omr M - Rada*9low" bMVW4M rmIV0AA • MO tom` h,ho.kw Pot M*t ion kl"ah nmt�sy V��lycthvtrne P"pc I MW E)