(a) Sewer Specifications.
(1) All materials and workmanship shall be in strict accordance with the standards established by the Service Director. Generally, the following materials are acceptable:
A. PVC Pipe -ASTM D-3033-75, with wall thickness equivalent to Schedule 40 or thicker;
B. Vitrified clay -ASTM C-700; or
C. Cast iron -ASTM A74-42, or equal.
(2) The size and slope of the building sewer shall be subject to the approval of the Service Director, but in no event shall the diameter be less than four inches, nor shall the slope of such pipe be less than one-fourth inch per foot.
(3) No building sewer shall be laid parallel to and within less than 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 insofar as possible. A change in direction shall be made only with properly curved pipe and fittings.
(4) 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 approved artificial means and discharged to the building sewer.
(5) All excavations required for the installation of a building sewer shall be open trench work, unless otherwise approved by the Service Director. Pipe laying and backfill shall be performed in accordance with ASTM specification (C12-72), except that no backfill shall be placed until the work has been inspected.
(b) Joint Specifications.
(1) All joints and connections shall be made watertight.
(2) All joints in vitrified clay pipe or between such pipe and metals shall be made with watertight "O" ring compression joints or with approved adapters.
(3) Other jointing materials and methods may be used only with the approval of the Service Director.
(Ord. 80-8. Passed 6-10-80.)
(Ord. 80-8. Passed 6-10-80.)