Re: proper slope for dwv in new construction
Posted by hj on June 04, 2003 at 21:34:08:
In response to Re: proper slope for dwv in new construction
It is an "old wive's" tale. Research has found that it does not happen.

: : Minimum 1/4" per foot for 3" and smaller.

:
: May I add that one does not want to exceed a slope of 1/2" per foot on these same size pipes.
: Otherwise, a situation could develop where the liquid waste flows past or first down the drain, potentially allowing the solid waste to get stuck and accumulate, eventually causing a blockage.

: If you slope at 1/4" per foot the wastes will travel together and help to prevent drain blockages.

: : : what is the recommended slope for drain line, main & branches

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