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Old 08-04-2010, 03:13 PM   #1
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2 toilet vent OK this way?


Am we there yet? Are we there yet?
Now that I know I'm working all in 3", it sure makes a difference.... I hope this configuration will be acceptable now. Pipe lengths are approximate (from scraps), though pretty close this time.

Thanks for your input all!

DM
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Old 08-04-2010, 07:23 PM   #2
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2 toilet vent OK this way?


From what I can gather, the vent is supposed to come off the top of the trap arm. What you have there isn't really even close, but hopefully someone with more than 3 years experience will chime in.

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Old 08-04-2010, 07:37 PM   #3
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2 toilet vent OK this way?


Here's a pic of what I have down there to work with. I (she) wants 2 toilets, where there was only one. 3 ft. of room from concrete to floor under there, 14" between 12" joists. It was vented at the kitchen sink and the bathroom sink/tub, toilet is not vented at all. Nightmare, huh? lol
Thanks for replying!

DM
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Old 08-05-2010, 02:14 PM   #4
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2 toilet vent OK this way?


Oh-Kaaaayyyyyy, I THINK this is more like what I need, yes? I have room to maneuver the drains the way shown, so this setup should meet venting and drain requirements, I hope? The added cleanout on the right hand end is just an afterthought to make it easier to access if ever needed, rather than where the one on the left at ground level is located.

Thanks!

DM
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Old 08-05-2010, 03:59 PM   #5
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2 toilet vent OK this way?


Let's clear up this whole mess. First off, why are you using 3" to vent a toilet? Second off there is no "trap arm" on a toilet line, the trap is built into the toilet. Third off unless your code is radically different than most the toilet to vent distance is "unlimited" which pretty much means that if there is a vent in the house it's good enough.
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Old 08-05-2010, 04:48 PM   #6
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2 toilet vent OK this way?


Why 3"? Because I keep getting so many mixed messages. I thought I was SUPPOSED to! Should I use 2"?
Do I HAVE a trap arm? Is that a bad thing? I'm afraid I'm pretty green to drains and vents and am having a hard time figuring this all out. And your last comment... maybe THAT'S why there's no toilet vent NOW here? It vents through the sink drain vents?

Thanks for taking the time and replying!

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Old 08-05-2010, 05:09 PM   #7
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2 toilet vent OK this way?


OK, I updated my sketch, is this more like it? I'll tie the sinks/tub vents into the 3" vent in the attic and on to the roof boot and out. Sinks are being vented with 1", is this OK too? (tub too)

Thanks!

DM
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Old 08-05-2010, 05:27 PM   #8
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2 toilet vent OK this way?


That will work just fine. Remember that toilets are self siphoning fixtures in that they are designed to completely flush the contents of the bowl and the trap each time the handle is pulled. After the flush the bowl and integral trap are re-filled by the toilet flush valve. Therefore, technically, toilets do not require a vent to operate. Remember also that a vents sole purpose is to protect a P trap from siphonic action and pressure differences within the waste system. As an aside, typically an entire bath group ( toilet, shower and lav) can safely and properly be vented through a single 1 1/2" pipe.
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Old 08-05-2010, 05:30 PM   #9
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2 toilet vent OK this way?


Is 3" required thru the roof ?
Or just recommended - in winter areas with snow/ice ?
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Old 08-05-2010, 05:31 PM   #10
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2 toilet vent OK this way?


I thought it was minimum 3" through the roof for venting if you live in a frost zone? (which we do)

Thanks!

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Old 08-05-2010, 10:10 PM   #11
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2 toilet vent OK this way?


That was more of the system that I was thinking of when we were talking. I hope that it works out for you. I'm glad to know that toilets don't need to be vented. I didn't remember that part from plumbing class in college.
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Old 08-06-2010, 07:03 AM   #12
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2 toilet vent OK this way?


Quote:
Originally Posted by NHMaster View Post
Therefore, technically, toilets do not require a vent to operate.
ok so u say "technically" they dont require a vent.....BUT are you recommending he does not run a vent for his toilets ???

If not then fine.... but I think thats confusing things a bit.


good luck !!
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Old 08-06-2010, 08:58 AM   #13
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2 toilet vent OK this way?


Around here it's 3" whenever you tie two toilet vents together anyway.
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Old 08-06-2010, 11:25 AM   #14
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2 toilet vent OK this way?


In the last sketch, I show the 3" vent pipe at the end with the cleanout. Isn't this OK?

Thanks!

DM
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Old 08-07-2010, 09:41 AM   #15
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2 toilet vent OK this way?


OK, now I have the proper pieces, (I HOPE!) to put this down there.
How does this layout look? The toilet lines will be a couple of feet longer, but this is the general idea.

Thanks!

DM
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