(A) The building sewer shall be cast iron solid pipe, ASTM specification or equal; vitrified clay sewer pipe, ASTM specification or equal; or other suitable material approved by the Inspector. Joints shall be tight and waterproof. 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, except that non-metallic material may be accepted if laid on a suitable concrete bed or cradle as approved by the Inspector.
(B) The size and slope of the building sewer shall be subject to the approval of the Inspector, but in no event shall the diameter be less than six inches. The slope of six-inch pipe shall not be less than 1/8-inch per foot.
(C) Whenever possible, the building sewer shall be brought to the building at an elevation below the basement floor. All connections made to a sanitary sewer at or below building basement level shall incorporate a backwater valve or check valve in the sewer line. No building sewer shall be laid parallel to or within three feet of any bearing wall, which might thereby be weakened. The depth shall be sufficient to afford protection from frost. The building sewer shall be laid at a uniform grade and in straight alignment in so far as possible. Changes in direction shall be made only with properly curved pipes and fittings.
(D) In all buildings in which any building drain is too low to permit gravity flow to the public sewer, sanitary sewage carried by such drains shall be lifted by approved artificial means and discharged to the building sewer. No water-operated sewage ejector shall be used.
(E) All excavations required for the installation of a building sewer shall be open trench work unless otherwise approved by the Inspector. Pipe laying and backfill shall be performed in accordance with ASTM specifications except that no backfill shall be placed until the work has been inspected by the Inspector or his representative.
(F) All joints and connections shall be made gas tight and water tight. Cast iron pipe joints shall be firmly packed with oakum or hemp and filled with molten lead. Federal Specification QQ-L-156, not less than one inch deep. Lead shall be run in one pouring and caulked tight. No paint, varnish, or other coatings shall be permitted on the jointing material until after the joint has been tested and approved.
(1) All joints in vitrified clay pipe or between such pipe and metals shall be made with approved jointing materials in accordance with the latest edition of Plumbing Rules and Regulations of the Administrative Building Council of the State of Indiana.
(2) Other jointing materials and methods may be used only by approval of the Inspector.
(‘85 Code, § 9.04(h)-(m)) (Ord. 9-1991, passed 2-11-91) Penalty, see § 52.999