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Author:
bastocks90 (NC)
Hello all,
I am working through the plumbing layout on a small home addition project beginning soon. I've got a specific question about a toilet vent. The toilet is the furthest fixture from the stack, so it drains into a sweep 90, then slopes downhill. Immediately after the toilet, I have a standard tee that will connect the vent. Does the tee have to exit the top of the drain pipe vertically? Or can it point toward the nearby stud wall that will hold the vent?
The drain line is 4". The vent will be 2".
Any clarification would be appreciated.
Thanks,
Bobby
PS: Is there a way to upload a CAD file so you guys can offer any comments on the layout as a whole?
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Author:
steve (CA)
Convert the cadd to jpg and post it on photobucket or tinypic. If by "standard tee" you mean a sanitary tee, you can't use a sanitary tee on it's back like that. You need to use a wye or a combo tee. The wye or combo tee needs to be rolled, so the vent branch is at least 45* from horizontal. Depending on the layout(and local code) you might be able to wet vent the toilet.
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Author:
packy (MA)
why 4 inch? 3 inch is pleny big enough.
use a 3 x 2 "Y" for the toilet vent and drain the sink into it.
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Author:
North Carolina Plumber (NC)
As has been said, you can't use a tee in that position. You'll need to use a wye and st.45. If the vent is dry you'll have to come off the drain at a 45 or 90 from horizontal. If you can get a sink or tub into the vent then it can come off the drain horizontal.
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Author:
bastocks90 (NC)
Thanks all for the quick replies.
Steve,
I've got the file uploaded in a new thread. Thanks for the tips.
Packy,
Thanks for letting me know!
I think it may be easier to just exit vertically, 90 toward the wall, and 90 up into the wall. Is there a "best fitting" for a vertical connection"?
NCPlumber,
Please see new thread. Do you think the washing machine would allow the toilet to wet vent?
Bobby
Edited 1 times.
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