1 March 1997
describes various pipe materials and applications suitable for sewer use. As indicated, the pure
plastics (PVC and ABS), fiberglass, and vitrified clay are best suited for corrosive environments,
whereas concrete (including ABS composite), ductile iron, and cast iron soil pipe should be
avoided unless special protective linings, coatings, or treatments are provided.
b. Sewer gases. In designing the sewer system, consideration will be given to the possibility
of objectionable odors being emitted from manholes and sewers. As noted in paragraph a.
above, new sewer connections to older systems with a history of H 2S problems will very likely
experience similar difficulties. In these cases, sewers and manholes will be located such that
emissions of odorous sewer gases, and in particular H 2S, do not create a nuisance or hazard for
nearby building occupants.