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mlijoi 11-15-2012 09:51 AM

Bathroom sink drain min. drain size
 
Hello,

What would be the minimum abs drain line I could use for a basement bathroom sink? The run is approx 4-5' to the main stack. I am thinking 1-1/4". Thanks!

md2lgyk 11-15-2012 11:34 AM

I believe that is correct.

plumberinlaw 11-15-2012 11:48 AM

that would be ok if it is 4' any longer requires larger pipe. Drainage has to be set for 1/4" pr foot.


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