Drain slope


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Old 09-21-06, 04:19 AM
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Drain slope

I've heard 1/4" per foot and I've also heard 1/8" per foot is acceptable for waste lines. What is the ideal slope? Does it depend on pipe size or fixture type? (i.e. toilet vs sink)

Thanks!
 
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Old 09-21-06, 04:35 PM
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Minimum 1/4" of fall per foot on 2" pipe or smaller.
Minimum 1/8" of fall per foot on 3" or larger.

1/2" per foot is Maximum.
 
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Old 09-22-06, 04:06 PM
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Originally Posted by Niadh
Minimum 1/4" of fall per foot on 2" pipe or smaller.
Minimum 1/8" of fall per foot on 3" or larger.

1/2" per foot is Maximum.
Thank You!!!
 
 

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