(A) The building sewer shall be cast iron soil pipe, ASTM specification or equal; vitrified clay sewer pipe, ASTM specification or equal; or some other suitable material approved by the Inspector. Joints shall be tight and water-proof. Any part of the building sewer that is located within ten feet of a water service pipe shall be constructed of cast iron soil pipe with leaded joints. Cast iron pipes with leaded joints may be required by the inspector 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; however, non- metallic material may be accepted if laid on a suitable concrete bed or cradle approved by the Inspector.
(B) The size and slope of the building sewers shall be subject to the approval of the Inspector, but in no event shall the diameter be less than six inches. The slope of the six-inch pipe shall not be less than one-eighths inch per foot.
(Prior Code, § 51.30) (Ord. 9-1950, passed 9-22-1950; Ord. 3-1960, passed 1-18-1960; Ord. 2-1960, passed 1-18-1960)