The building sewer shall be cast iron pipe, soil pipe, ASTM specifications, A74-42 or equal, vitrified clay sewer pipe, ASTM specifications C13-54 or equal; rigid plastic pipe ASTM specifications D 2665 PVC DWV schedule 40, SDR 26 or equal; or other suitable material approved by the City Engineer. Joints shall be tight and waterproof. Cast iron pipe with leaded joints may be required by the City Engineer where the building sewer is exposed to damage by tree roots. If installed in filled or unstable ground, the building sewer shall be of cast iron soil pipe, except that non-metallic material may be accepted if laid on a suitable concrete bed or cradle as approved by the City Engineer.
(1979 Code, § 2.66) (Ord. 135, passed 4-20-1999)