In the plumbing and piping industry, as
in many others, the leading contractors
and engineers pay attention to new products
and techniques, and innovative
applications of "ordinary" materials.
They are eager to produce superior jobs
or do the same job less expensively.
One example of successful innovation
is the widespread use of plastic materials
for plumbing drainage, waste, and
While plastic drainage piping has
become standard practice in most communities,
few plumbers have rushed
out to use plastic for water-supply piping.
Residential plumbing contractors—
in our area, at least—seem reluctant to
accept plastic pressure piping. Codes
are not the problem, as there appear to
be no general code barriers.
Part of the problem is simply the