(A) All joints and connections shall be made gastight and watertight. All cast iron pipe joints shall be firmly packed with oakum or hemp and filled with molten lead, Federal Specification QQ-L-156, or most current federal specification, 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.
(B) All joints in vitrified clay pipe or between the pipe and metals shall be made with approved hot-poured jointing material, approved rubber gaskets, oakum and Sewertite, Am-Vit or an approved equal method and material.
(C) Material for hot-poured joints shall not soften sufficiently to destroy the effectiveness of the joint when subjected to a temperature of 160°F, nor be soluble in any of the wastes carried by the drainage system. The joint shall first be caulked tight with jute, hemp or similar approved material. Other jointing materials and methods may be used only by approval of the Superintendent.
(D) The connection of the building sewer into the public sewer shall be made at the “Y” branch, if that branch is available at a suitable location. If the public sewer is 12 inches in diameter or less, and no properly located “Y” branch is available, the owner shall, at his or her expense, install a “Y” branch in the public sewer at the location specified by the Superintendent. Where the public sewer is greater than 12 inches in diameter, and no properly located “Y” branch is available, a neat hole may be cut into the public sewer to receive the building sewer, with entry in the downstream direction at an angle of about 45 degrees. A 45-degree ell may be used to make the connection, with the spigot end cut so as not to extend past the inner surface of the public sewer. The invert of the building sewer at the point of connection shall be at the same or at a higher elevation than the invert of the public sewer, but no higher than a point one-half the vertical distance between the invert and the crown of the sewer. A smooth, neat joint shall be made, and the connection made secure and watertight by encasement in concrete. Special fittings may be used for the connection only when approved by the Superintendent. Manholes shall be constructed at any junction of a ten-inch diameter line or larger into a public sewer.
(1986 Code, § 7.28.120) (Ord. 1240, passed - -1984)