Drain & Vent for Toilet

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by catk9, Mar 7, 2010.

  1. catk9

    catk9 New Member

    Messages:
    15
    I wanted to attach an image to show what issue I have. The only way I could figure out how to do it is to start a new post. I appreciate all that commented on my drawing on my previous post and I realize now that it would not work because a portion of the vent would be horizontal below the floor. The issue is, the wall of the bathroom is over the joist and as the image shows, the vent was installed into the room and 45s were used to get the vent to the center of the wall. One of the 45s is visible inside the room next to the wall. Is there a way to do this so the vent does not have to go into the room?


    IMG_0066 (2)..jpg
  2. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,048
    Location:
    Cave Creek, Arizona
    Only if the tee can be lowered. Then a street 45 into the bushing and trimming the top of the joist will get it into the wall.
  3. catk9

    catk9 New Member

    Messages:
    15
    Thanks HJ for your help.
  4. DavidTu

    DavidTu Member

    Messages:
    239
    Location:
    Seattle, WA
    I believe you can get a Low-heel 90 that is 3x2 and which may save some altitude; it looks to me like you are using a regular 3" combo there--I am suggesting swapping that out for a 3x2 low-heel 90. From there you can go directly into the 45s rather than first adapting down to 2". Also, can you not use a vent-90 instead of the 45s? That would also save altitude.

    Careful notching the top of the joist though, you cannot notch the middle 1/3 of the joist, if I remember correctly.
  5. dlarrivee

    dlarrivee New Member

    Messages:
    1,172
    Location:
    Canada
    Uhh, its the top and bottom of the joist that you should not be notching.... Why do you think TJIs can have osb between the top and bottom chords?
  6. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,048
    Location:
    Cave Creek, Arizona
    I HAVE notched the tops of joists countless times to allow pipes to offset over them, although to be specific, it is more like the edge is trimmed on an angle to give clearance for the pipe.
Similar Threads: Drain Vent
Forum Title Date
Plumbing Forum, Professional & DIY Advice Help connecting drain line to a vent inside a floor joint Monday at 9:50 AM
Plumbing Forum, Professional & DIY Advice Adding garage utility sink - use existing 1st floor bathroom drain and vent? Nov 13, 2014
Plumbing Forum, Professional & DIY Advice Is my bathtub plumbing correct? Venting/Drain setup Aug 19, 2014
Plumbing Forum, Professional & DIY Advice Do ALL drains need venting? Aug 15, 2014
Plumbing Forum, Professional & DIY Advice Need help with adding tub drain and vent Aug 10, 2014

Share This Page