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What does the homeowner really need to know about plumbing systems?
Residential plumbing systems can be divided into two
types: (a) water supply, and (b) waste drainage. Supply
lines may be of copper, galvanized steel, or plastic,
with copper being the most prevalent. The sanitary
drainage system relies on gravity for its discharge; its
pipes are much larger than the water supply lines, which
are under pressure. Drainage lines may be of cast iron
or plastic.
Dr. Ronn Phillips, Arch.D., and Bobbi Hauptmann, Environmental Design, College of Human Environmental Sciences, University of Missouri-Columbia
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Last update: Tuesday, July 08, 2008
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