Re: installing new toliet, how many on a 3" line?
Posted by hj on October 12, 19100 at 01:25:49:
In response to Re: installing new toliet, how many on a 3" line?
UPC says 3 toilets on a three inch line, but the third one has to be at least fifteen feet from the others. This is a theoretical limit. If you already have a 3" line with 3 toilets and are going to add a fourth, most jurisdictions will allow it and will not require an upgrade to 4".
And if you are in a BOCA code area, the answer probably would be, "How many do you need?"

: : how many units can i run off a 3" drain pipe?

: Three toilets can be used on a three inch line. When the fourth toilet is added, the pipe needs to be sized at four inches.




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