(a) Concrete Encasement. Concrete encasement shall be used when required for the sanitary sewer to withstand trench loadings, when rock is encountered in the trench bottom, when the cover is less than two-and-one-half (2 1/2) feet, or when such sewer line crosses a stream or watercourse with year-round flow. In those cases where a sanitary sewer crosses such a stream or watercourse, the encasement shall extend along the sewer ten (10) feet beyond the top of the bank on both sides.
(b) Testing. Leakage and deflection tests are required for all sanitary sewers except building sewers. Vacuum tests are required for all manholes.
(c) Private Sanitary Sewers. All private sanitary sewer laterals shall be six inches (6") minimum diameter PVC plastic conforming to ASTM D-3034 SDR 35 with flexible gaskets conforming to ASTM D-3212, unless otherwise specifically approved by the City Engineer. Before any building sewer, as defined in Chapter 911 of the Codified Ordinances, is constructed, a tap permit must be obtained from the City. Installation of building sewers shall conform to applicable regulations of the City. An "S" shall be stamped into the face of the curb at the location of any building sewer tap. (Ord. 27-11. Passed 3-14-11.)