A sanitary rough-in for a floor-mounted water closet is coordinated with the underground plumber. Which minimum drain size is commonly used for the water closet branch?
Correct Answer
C) 3 in.
A water closet branch drain is commonly at least 3 in. Other choices are typical smaller fixture trap or drain sizes, while 4 in. may be used but is not the common minimum stated here.
Why This Is the Correct Answer
A water closet branch drain is commonly at least 3 in. Other choices are typical smaller fixture trap or drain sizes, while 4 in. may be used but is not the common minimum stated here.
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