131030 Sewer Insurance Policy - Laserfiche WebLink

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2. Where proposed work conflicts with existing private building sewer laterals, a segment of the existing sewer lateral, in conflict, shall be removed and replaced/reinstated. Removal of existing sanitary laterals shall be limited to the first joint upstream and downstream of the portion of work in conflict with the proposed improvements, or as required to tie into existing lateral locations. This work will be measured on a per instance basis for conflicting laterals encountered during the course of the Work and shall include all labor, equipment and materials (including pipe, fittings and couplings). 3. Replacement work materials shall be PVC SDR 35 per ASTM D3034. New sanitary laterals and fittings shall be 6-inch diameter PVC SDR 35 per ASTM D3034 unless otherwise directed by the Owner. The pipe and fittings for the 12-inch and 8-inch Sanitary Sewer shall be PVC SDR 35 per ASTM D3034. 4. The work performed with this Pay Item shall conform to the current City Standards and IDEM's requirements 5. Watertight joints shall be provided at all connections. 6. Installation of the sanitary sewer pipe shall be in accordance with the pipe manufacturer's recommendations, ASTM D2321, the City of South Bend's requirements and IDEM's requirements. Pipe installations shall be backfilled as shown on the Plans or as directed. 7. The termination point of each sanitary sewer lateral shall be marked with a steel reinforcing bar and with a wood stake. The reinforcing bar shall be size #4, installed flush with proposed grade and shall extend to the center of the sewer lateral pipe. The reinforcing bar shall be offset from the end of the lateral pipe such that it does not touch the pipe. The wood stake shall be pressure treated and shall be 2"x2"x24" long. The top of the stake shall protrude 6"above finish grade. The sanitary sewer lateral markers are incidental to the respective pay item. 8. Leakage tests of the sanitary sewer shall be conducted by the Contractor for infiltration or exfiltration using a hydrostatic test. The hydrostatic test shall be performed with a minimum positive head of 2-feet. The rate of infiltration or exfiltration shall not exceed 100 gallons per inch diameter per mile per day for any section of the system. In lieu of the hydrostatic test, all sanitary sewer piping shall be subject to a low pressure air test per ASTM F1417. The City and Engineer shall be advised 48-hours prior to conducting all tests. 9. A five percent (5%) Mandrel Deflection Test shall be performed on all PVC sanitary sewer pipe. 10. These pipes shall be mandrelled with a rigid device sized to pass five percent(5%) or less deflection (or deformation) of the base inside diameter of the pipe. The Mandrel Test shall be conducted no earlier than thirty (30) calendar days after reaching final trench backfill grade. Each pipe material/type required to be Mandrel tested shall be tested with a Mandrel approved by the pipe manufacturer and meeting the requirements of this section. The test shall not be performed with the aid of a mechanical pulling device. 11. The mandrel shall be pulled by hand through all sewer lines in a manner acceptable to the City and any section of sewer not passing the mandrel shall be uncovered, replaced or repaired to the City's satisfaction and retested. 19