(A) A separate and independent building sewer (lead) shall be provided for every building.
(B) All costs and expenses incident to the installation of the building sewer and the connection of the building sewer to the public sewer shall be borne by the property owner.
(C) All building sewers (leads) shall meet or exceed the requirements of this Code.
(D) Building sewers shall consist of pipes and fittings of the following types and sizes:
(1) Pipe must be of sufficient diameter to carry the estimated volume of discharge. Minimum pipe size permitted is 4 inch ID;
(2) Pipe must be 1 of the following materials and cannot be mixed in the connection lines to include the fittings:
(a) Cast iron with rubber-type gaskets;
(b) Cast iron NH pipe with neoprene stainless couplings;
(c) Ductile iron with rubber-type gaskets, slip joint or mechanical joint;
(d) Vitrified clay tile with ASTM C425 joints;
(e) Reinforced concrete with ASTM C443 joints;
(f) PVC plastic, schedule 40 or better;
(3) No tees, double tees, or crosses or double hub pipes shall be permitted; and
(4) All changes in grades or direction shall be made with appropriate fittings.
(E) Cleanouts shall be installed every 50 feet of straight run and at each 45 degree direction change, and all cleanouts shall be plugged. All cleanouts shall be the same diameter as the pipe they serve.
(F) All lines shall be laid at a minimum slope of 1/8 inch per foot grade and a maximum slope of ½ inch per foot grade for 4 inch lines and a minimum of 1/8 inch per foot grade and a maximum ½ inch per foot grade for 6 inch lines.
(G) The method to be used in excavating, placing of pipe, jointing, testing and backfilling the trench shall conform to the requirements of the Plumbing Code rules (Part 7) issued by the State Department of Labor Construction Code Commission and the regulations of the city, where applicable.
(H) No building sewer shall be laid within 3 feet of any bearing wall. The depth shall be sufficient to afford protection from frost.
(I) In all buildings in which any building drain is too low to permit gravity flow to the public sewer, sanitary sewage carried by such drain shall be lifted by a pumping system and discharged to the building sewer.
(J) All excavation for building sewer installation and connection shall be adequately guarded by barricades and lighting so as to protect the public from hazard. Streets, sidewalks, alleys, parkways and other public property disturbed in the course of the installation and connection work shall be restored in a manner satisfactory to the city.
(1993 Code, § 68-156) (Ord. passed 1-22-2001; Ord. 2014-01, passed 1-27-2014)