basement plumbing rough-in

4364 Views 3 Replies 3 Participants Last post by phospher, Mar 20, 2009

phospher

Discussion Starter · Mar 20, 2009

hi,

my bathroom in my basement is roughed in with plumbing. there are three pipes. one that is obviously for the toilet, one that sticks about 14 inches out of the concrete floor, and then one that runs vertical along the wall of the concrete to the left of the toilet. this pipe that runs along the wall and down into the concrete also looks as if it is vented as the pvc also goes up and into the i-joist. my question is which pipe is for what?

the tall pipe sticking out about 14 inches is for the shower right?
the one that is in the wall and drains down and vents up is for the sink right?

why doesn't the sink just go down like the shower drain?

does it matter which pipe the sink or shower drain into?

also, i replaced my sink and faucet in my kitchen with a sink that only has one drain hole. to get rid of the other drain i simply blocked the old drain's plubming by wrapping the pvc drain pipe with plumbers putty and putting a rubber plug in it. i capped it just above the p-trap so the p-trap is still there think that is ok?

thanks,

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Mike Swearingen

· #2 · Mar 20, 2009

Basement - The toilet pipe should be 3" or 4", a shower pipe should be 2" and the wall (sink) pipe should be 1.5".
A toilet has a built-in trap. The shower pipe sticking up out of the floor should have a trap down in the floor and be vented after the trap, probably to the toilet stack. A sink will have a trap installed under the sink.
Kitchen - Your old kitchen sink should have had only one trap with both sides flowing to it and then on to the drain line. I don't understand why you have a trap left over. How did you trap and connect the new sink?
Mike

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