ABSTRACT
Modern indoor plumbing dates back to the latter half of the 19th century, when it became feasible to have pressurized domestic water piping and unpressurized sanitary waste piping indoors. This chapter helps to understand the use of water in buildings, especially in water conservation, by knowing how to reduce usage without compromising functionality and health. It explains the piping materials, basic piping types and systems used in plumbing systems. The chapter explores the code issues related to the plenum and to accessibility. It also helps the reader to understand plumbing design documentation. Plumbing drawings are actually some of the most difficult because many pipes are small and located very close together—too close together to show up on readable drawings. Plumbing drawings are always required to have a "waste and vent riser" or "schematic", or "isometric" which is drawn as a 3-dimensional isometric projection. Interior designers do commonly select plumbing fixtures, largely due to aesthetic concerns.
