Saturday, December 22, 2007
Drainage System
A drainage system (drainage piping) includes all the piping within public or private premises, which conveys sewage, rain water, or other liquid wastes to a legal point of disposal, but does not include the mains of a public sewer system or private or public sewage treatment or disposal plant. -- American Standard National Plumbing Code (ASA A40.8-1955)
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