Toilet & Shower Vent Question

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Josh Weight, Jan 14, 2020.

  1. Josh Weight

    Josh Weight New Member

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    Jan 14, 2020
    Location:
    Utah
    Hello,

    I am working on a bathroom remodel and have a toilet and shower right next to eachother. I am wondering if my plan shown below will provide adequate venting for both the shower and toilet? Just getting a little confused as to where the vent should be located. Thanks in advance.

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  2. Terry

    Terry Administrator Staff Member

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    Plumber
    Location:
    Bothell, Washington
    Picking up the shower with a wye and venting the shower does both.

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    Last edited: Jan 15, 2020
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  4. James Henry

    James Henry In the Trades

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    You can do that but the shower drain must be at the same elevation as the toilet drain so the wet vent ties in horizontally. No vertical offsets on a wet vent allowed. " The horizontal pipe acting as the wet vent may not have vertical offsets".
     
    Last edited: Jan 14, 2020
  5. Josh Weight

    Josh Weight New Member

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    Well dang that's a bummer. Any suggestions on a different configuration? The shower trap comes out at a higher elevation than the closet bend and I don't want to drop the shower trap any more or else it won't be within the floor cavity.
     
  6. James Henry

    James Henry In the Trades

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    If you can tie a vent straight up off the toilet drain up through the opposite wall, that would do it.
     
  7. Josh Weight

    Josh Weight New Member

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    I got it all dry fitted together and I was able to get that shower drain to come in horizontal. Any way you could check out my pictures below and verify that I did it correctly? I greatly appreciate your time and expertise.

    On a side note, I am a structural engineer and if you ever need any engineering help I would love to return the favor :)


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  8. Terry

    Terry Administrator Staff Member

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    That should work. Here I would need the combo looking up for the vent, but some places are okay with the santee. They used to be okay with that here too when I started off plumbing.
     
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  9. Josh Weight

    Josh Weight New Member

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    Thanks very much!
     
  10. Mike Rock

    Mike Rock Member

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    On a side note, are you allowed to roll the wye up at bit and have the wet vent come in to the toilet drain a bit above horizontal?
    Or does it have to come in at same horizontal axis as the toilet drain?
     
  11. James Henry

    James Henry In the Trades

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    I'm not an inspector but I would think no more than 22 degrees would be OK.
     
  12. hj

    hj Moderator & Master Plumber Staff Member

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    This is the first time I have ever heard of "no vertical offsets on a wet vent", because i used to do it all the time. In fact, the inspectors preferred it that way,
     
  13. James Henry

    James Henry In the Trades

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    Look it up.
     
  14. James Henry

    James Henry In the Trades

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    Jul 23, 2019
    Occupation:
    Plumber
    Location:
    Billings, Montana.
  15. Mike Rock

    Mike Rock Member

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  16. James Henry

    James Henry In the Trades

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    Yup. whenever a horizontal drain is tied into another horizontal drain the fitting is rolled up slightly to allow the connecting drain line to start off with the proper grade.
     
  17. Terry

    Terry Administrator Staff Member

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    hj, same here. We do a lot of vertical wet venting in Seattle.
     
  18. James Henry

    James Henry In the Trades

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    I didn't say no vertical wet vents, I said no vertical OFFSETS on the horizontal wet vent.
     
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