ABSTRACT
Building sewers are developed when the final disposal point or location is considerably far away from the building. Building sewers can be developed in various ways, like sanitary, combined or storm sewers, with respect to the type of waste to be addressed by particular sewer, according to the local by-laws. Development of building sewer systems involves incorporation of some drainage infrastructure, like inspection pits or manholes, sewer connection pits etc., for its efficient management. Though underground piping is generally developed for building sewer systems, sometimes surface drains are also constructed for the purpose. Mostly, building sewers work under gravity, but in special conditions pumping is employed, which involves befitting pumps and supporting structures for this purpose. Reducing storm or rainwater load in a storm or combined sewer and adopting some effective ways of facilitating infiltration of these waters while draining would be the best practice, and so is prescribed exclusively in this chapter. Finally, the procedure of connecting various building sewers with the respective public sewers nearby, and sizing of all its components, is well guided.
