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There is no "set" amount of noise permissible. The material the pipes are made of results in the amount of noise. Normally, the only piping that makes noise is the drain pipes. Cast iron is the quietest and plastic is the noisiest.

2007-03-28 09:13:51 · answer #1 · answered by sensible_man 7 · 0 0

54

2015-11-08 21:08:43 · answer #2 · answered by ✔ Sandy 5 · 0 0

.25 per 10 ft length.

2007-03-28 09:12:23 · answer #3 · answered by Anonymous · 0 0

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