Rough in basement bathroom

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Old 05-19-18, 04:27 PM
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Rough in basement bathroom

I'm turning a basement half bath into a full. Main stack is right next to the bathroom. Can anyone please give me a rundown for proper rough in? Stand up shower where the toilet is, toilet next to that then the vanity by the doorway lined on the left wall. I attached pictures.
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Old 05-20-18, 04:21 PM
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Good news is that it looks like you already have a proper vent (2" pipe up through the ceiling).

You'll need to dig up the main drain and figure out how to wye into it for the toilet and shower, and vent both from that wye.

Easiest way might be to sketch out a plan view (from the top) including where the current vent and stack/horizontal drain is, and where the new fixtures will be going.
 
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Old 05-20-18, 06:45 PM
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Thank you Zorfdt!

Yes, there is a 2" vent next to the stack. About 3' from the stack is a floor drain.

I attached a sketch.

Also, we are framing out a cubby next to the shower to inset the toilet and vanity. Can I wrap the vanity drain around the newly framed corner?

Thank you!
britt
 
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Old 05-20-18, 06:59 PM
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You best bet is busting up a pathway in the floor. Put all your drains in the floor. No you can't go around a corner.
 
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Old 05-20-18, 07:38 PM
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Hi sleeper!

Thanks for replying.

I didn't think so. Plumbing is definitely the trade I know the least about so I thought I'd ask. So the previous drain for the vanity that was going into the vent and stack will now have to go under ground and tie into the toilet and shower? And is that pipe opened up to nothing with the white pipe sticking out of it (been in there since I bought the property) backflow? Do I need that after I tie it underground?

britt
 
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Old 05-23-18, 10:22 AM
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So this is what I would do. It will probably change a bit once you open up the slab to see how to tie it into the existing drain.

The red lines are 3" PVC to the toilet. Orange is 2" to the shower and vanity.

The vanity turns up, into the vanity, then remains 2" up to ceiling level, and ties into the vent back near the stack. The vent needs to remain 2" to handle the toilet vent.
 
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