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Old 03-09-2008, 09:57 AM   #1
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Rough-in up to code?


Hi guys. This is my first plumbing job, and I admit I did more research on the back-end of things, rather than up front.

Based on the pictures, I just want to know if you guys see anything that might not pass code (MI). I put the AAV in the wall, since I will be using a pedestal sink, and I didn't want it out in the open (aesthetics). The wall will not be insulated, and I will be using a vent grate over the AAV.

BTW, this is for a simple powder room (lav and toilet).

Thanks for any (+ or -) input.

Jason
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Old 03-09-2008, 10:27 AM   #2
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Rough-in up to code?


It looks like you used a tee fitting for the sink vent. It should be a tee wye. They may not care though. The sink vent ideally would have come up directly from the drain six inches above the flood rim of the fixture then you could elbow over and up. They way you have it should work though.
It looks like you are wet venting the toilet with the sink line. If that's the case is that drain line 2"? It can be 1.5" from the sink to the tee but everything before that should be 2". You also need to make sure you are allowed to wet vent where you live.
If those are galvanized or brass supply lines you have in the walls there I would strongly recommend changing them while everything is open. If that is an outside wall be sure to insulate well to try and prevent the pipes from freezing.

What is that big black thing sticking up there? Floor drain?

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Last edited by Marlin; 03-09-2008 at 10:33 AM.
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Old 03-09-2008, 11:19 AM   #3
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Rough-in up to code?


Well, I knew this was going to come back and bite me in the ass.

No, the drain line from the sink to the wye is 1.5". I can't use 2" unless I change the wall framing (currently 2x4 studs). So I would somehow have to vent the toilet drain and tie into the sink vent. I don't know that I could do that without re-routing the sink drain...

The black thing is a backwater valve, a new city (or maybe state?) requirement here for any newly installed drains. The black tube is simply an access tube for the valve once the floor is finished.

The current supply lines are copper, and obviously CPVC for the powder room. The other pipe you see up there is the gas line.

Thanks for the input. Any creative ideas to use the existing pipe and run a new vent for the toilet?
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Old 03-09-2008, 11:27 AM   #4
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Rough-in up to code?


Is it code if I put the toilet vent downstream from the wye where the sink drain comes in? In other words, use the current wye in the toilet for the vent, and tie it back into the sink vent, and have the sink drain come in right after the toilet 90.
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Old 03-09-2008, 11:29 AM   #5
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Rough-in up to code?


Pipe size 2" will fit inside a 2 x 4 wall.

Under my code your not to code, not much I can say about this until I know where your located.
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Old 03-09-2008, 11:32 AM   #6
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I'm in MI.
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Old 03-09-2008, 11:32 AM   #7
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Rough-in up to code?


I run 2" PVC though 2x4 walls all the time. Technically it isn't up to code drilling out that much of a stud but so long as the wall isn't load bearing, you don't butcher the holes, and you don't drill out an entire wall it's not going to hurt anything. If the inspector is going to be a hard ass about it they make braces you put on the 2x4 around the hole you drilled which I believe bring it up to code.

You don't unnecessarily need to do this but it does look like you can get the fitting for the toilet vent much closer to the flange.

Like I said before two of the biggest things you need to check on are
1. Are you allowed to wet vent a toilet
2. Are AAVs permitted.

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Old 03-09-2008, 11:35 AM   #8
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I'd try to help out here but your not under my code, so I'll leave this up to whoever knows the code your using.
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Old 03-09-2008, 11:41 AM   #9
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I'd try to help out here but your not under my code, so I'll leave this up to whoever knows the code your using.
This is pretty basic stuff. The only things I can think of that will vary town to town is the AAVs and wet venting. I already brought that up twice (now three times) in this thread so hopefully he's going to check on it. That is unless he's in one of those places covered by the IPC where a toilet purched on a five gallon pail is up to code..
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Old 03-09-2008, 11:43 AM   #10
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Rough-in up to code?


Studor vents are allowed in your state but ask 1st.

http://www.studor.com/approvals.htm
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Old 03-09-2008, 11:49 AM   #11
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Studor vents are allowed in your state but ask 1st.

http://www.studor.com/approvals.htm
That's a good bit of information. Ron is correct though in that you should still ask. Your municipality may amend the code as they see fit. For example one local town here doesn't allow plastic pipe; everything still has to be copper or cast iron.

A simple call to the plumbing inspector should clear things up for you.
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Old 03-09-2008, 11:50 AM   #12
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Rough-in up to code?


AAVs are code here in MI, so no worries there (already asked the city).

Assuming wet venting is code, and I changed to 2" pipe after the tee in the wall, would this be fine? I would need to wye in right after the toilet, and cap off the 1.5" where it wye's into the 3". What do you guys think?
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Old 03-09-2008, 02:26 PM   #13
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Rough-in up to code?


That will work, bring 2" all the way into the wall and 2" up for the vent, then tee across to the lav sink with 1-1/2", make sure you can wet vent that toilet before you do this or you maybe tearing it out if you fail the inspection.
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Old 03-11-2008, 10:22 PM   #14
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Originally Posted by Ron The Plumber View Post
That will work, bring 2" all the way into the wall and 2" up for the vent, then tee across to the lav sink with 1-1/2", make sure you can wet vent that toilet before you do this or you maybe tearing it out if you fail the inspection.
Just to clarify, do I need to run 2" all the way from the toilet wye to the AAV? Or just to the tee? In other words, does only the wet portion of the vent need to be 2"?
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Old 03-11-2008, 11:34 PM   #15
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Just to clarify, do I need to run 2" all the way from the toilet wye to the AAV? Or just to the tee? In other words, does only the wet portion of the vent need to be 2"?
All the way up to the AAV. The only thing that can be 1 1/2 is the piece coming out of the tee going to the sink waste.

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