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Old 12-13-2010, 07:40 PM   #1
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plumbing rough-in for vanity


Greetings,

I'm plumbing for a bathroom vanity. I know that the sink will be exactly in the middle of the vanity, so I know the sink location. I will be using wall-mounted lavatory fixtures (example: K-410K) with two faucets and a spout.

How does the sink vent (1.5-inch ABS) go up past this plate?

While we're looking at that problem, I have a related question about the "tee" to which the trap below the sink is connected. Where should this tee be located with respect to the sink? Right on the centerline of the sink, or does offset by some amount work better?

If someone could point me to some drawings of common rough-ins, maybe that would answer my questions.

Tom

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Old 12-13-2010, 09:33 PM   #2
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plumbing rough-in for vanity


I try to rough in lavs using the method shown on right. It allows for vanity lights, medicine cabinets, and in your case, wall mounted faucets. If your vent is already installed, use 45's to offset around your faucet.
As far as your tee goes, center it or go up to about 2.5" to one side. Any more and you'll be adding a fitting to line it up again.
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Old 12-14-2010, 12:35 AM   #3
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plumbing rough-in for vanity


Thanks, Eplumber!

I think I see what's going on - the vent can go 90 degrees to one side, then up. But it will have to cross a water supply pipe, should be just enough room.

Is there a full-size image of the one you posted? It's a little hard to see.

Thanks again.
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Old 12-14-2010, 09:38 AM   #4
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plumbing rough-in for vanity


Quote:
Originally Posted by tom31415926 View Post
Thanks, Eplumber!

I think I see what's going on - the vent can go 90 degrees to one side, then up. But it will have to cross a water supply pipe, should be just enough room.

Is there a full-size image of the one you posted? It's a little hard to see.

Thanks again.
http://www.plumbing-geek.com/trap-arm.html
To be code compliant, you need to be 6" above the rim of the sink before you 90 horizontal. 45 degree is still considered vertical though
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