(A) The building sewer shall be polyvinyl chloride (PVC) type of pipe. PVC pipe shall be of the type conforming to ASTM D3034 (SDR 35) for six-inch laterals. Four-inch laterals shall conform to ASTM D1785 (SCHEDULE 40) or a pipe meeting or exceeding these standards and approved by the wastewater superintendent. Building sewers that are within ten feet horizontally or 18 inches vertically of a water service line shall be PVC ASTM D2241 (SDR 21) or an approved equal. See § 55.028 for pipe diameter and slope requirments.
(B) The joints shall be of the “O” ring or the solvent weld type. All fittings shall be of the “O” ring or solvent weld type except that the “Fernco” type fitting or equal may be used to connect vitrified clay to plastic, plastic to plastic, and/or cast iron to plastic.
(C) All plastic building sewer pipe shall be installed in full compliance with the recommended practice for underground installation of flexible thermoplastic sewer pipe, meet the requirements of ASTM D2321-89 and shall be installed with a six-inch granular bedding and covered with six inches of granular backfill. Granular backfill shall be no larger than No.7 stone.
(D) When installing the building sewer, construction of bedding and side fill material densities shall meet 90% Proctor ASTM D1557 compacting in six-inch layers. Cost of compaction, testing and deflection testing shall be the responsibility of the contractor or owner. A deflection limit of 5% is the maximum for any installed plastic pipeline.
(`90 Code, § 13.12.320) (Ord. 690, passed - -; Am. Ord. 969, passed - -; Am. Ord. 93-28, passed--; Am. Ord. 95-18, passed - -; Am. Ord. 2008-13, passed 4-15-2008)