trap size for water closets
Posted by Crissy on March 27, 2002 at 11:09:42:
In both the uniform plumbing code and the Florida Plumbing code, it says the minimum trap size for a water closet shall be consistent with the fixture outlet size. On all the plumbing drawings I've ever seen, the trap size for a water closet was 4" despite the fixture outlet size being less than 3". Why wouldn't the trap size be listed as 3"?

Thanks for your help.

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