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1/4 " per Foot minimum. At least this is what I get out of "Code Check", ISBN # 1-56158-409-6. There is a lot to Plumbing on how pipes are sized, vented and connected. This book is worth getting-I found it on E-bay for less than $10.00.

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โˆ™ 2005-11-02 01:34:53
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Q: How much slope per foot is needed for a sink drain pipe?
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