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Thread: Bath Drain/Vent Review

  1. #1
    Mechanical Engineer wysedav's Avatar
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    Default Bath Drain/Vent Review

    If you have a second please comment on the isometric I drew for my basement bathroom layout. I just want to get a comfort level before I begin gluing this up. I have two additional questions maybe someone can help me with:
    1. When I transition from the drain to the vent on the shower can I use a 2" "y" with the branch going to the shower?
    2. Where the 2" drain line from the shower ties into the 3" toilet drain do I have to come in above the centerline of the pipe or is it OK for everything to be in the same horizontal plane?

    Thanks,

    David
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  2. #2
    DIY Senior Member dlarrivee's Avatar
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    Flat vent for the shower?

  3. #3
    Mechanical Engineer wysedav's Avatar
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    Yup, the vent for the shower would be on the same plane as the drain.

  4. #4
    DIY Senior Member dlarrivee's Avatar
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    That is a problem.

  5. #5
    Test, Don't Guess! cacher_chick's Avatar
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    The vent must be downstream of the trap and cannot be horizontal until it has risen at least 6" above the flood rim of the lavatory.

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