DWV Layout Basement Bathroom - layout review

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by great white, Feb 13, 2012.

  1. great white

    great white New Member

    Joined:
    Dec 16, 2009
    Location:
    Michigan
    We are in the planning stages of adding bathroom to basement. This new bathroom is directly below existing upstairs bathroom. House is 1 story ranch. Looking for additional opinions. Most of the plumbing contractors are saying, AAV vent for vanity and no other vents required do to close proximity to existing stack. I am also concerned about the toilet drain connecting upstream of shower and vanity. Is there a risk with flow of toilet siphoning out the traps for shower and vanity?


    Rough-in_snip.JPG
     
    great white, Feb 13, 2012
    #1
  2. cacher_chick

    cacher_chick Test, Don't Guess!

    Joined:
    Jan 5, 2008
    Occupation:
    Test, Don't Guess!
    Location:
    Land of Cheese
    The existing stack has no effect on the proposed addition.

    If that is what they are telling you they are apparently are not versed in proper plumbing or the plumbing code.

    Michigan uses the International Plumbing Code (IPC)
     
    cacher_chick, Feb 13, 2012
    #2
  3. Sponsor

    Sponsor Paid Advertisement

     
  4. Terry

    Terry Administrator Staff Member

    Joined:
    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    You can not use the upstairs waste stack for the downstairs bath as any sort of vent. It's the waste stack for the upstairs.
    Wet venting is only for a bathroom group on the "same" floor. That means you can using wet venting "within" the bathroom group (altogether on one floor)

    Your layout does not vent the shower,
    The lav would vent by the AAV
     
    Terry, Feb 13, 2012
    #3
Similar Threads: Layout Basement
Forum Title Date
Plumbing Forum, Professional & DIY Advice Help with my basement drain rough in layout Apr 6, 2017
Plumbing Forum, Professional & DIY Advice Basement Rough In Layout help Jul 27, 2016
Plumbing Forum, Professional & DIY Advice Basement bath plumbing layout May 10, 2016
Plumbing Forum, Professional & DIY Advice Advice on basement bathroom layout and venting Apr 8, 2016
Plumbing Forum, Professional & DIY Advice Basement bathroom layout Jan 19, 2015

Share This Page