Need help with adding new basement sink to main stack.

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by cleon, Apr 10, 2014.

  1. cleon

    cleon New Member

    Joined:
    Apr 10, 2014
    Location:
    Ontario
    Hello all - first post!

    In my basement I have a 3" copper stack that extends straight out through the roof. It services only the 3pc bathroom on the main floor.

    I would like to add a bar sink / dishwasher in the basement and tie into that stack. It would be approximately 5' from the stack.

    My question is do I need to add vent pipe as well or is the stack sufficient? And if I need a vent, where is the appropriate place to tie it back into the stack?

    Attached is a diagram...

    basement.jpg
     
  2. cacher_chick

    cacher_chick Test, Don't Guess!

    Joined:
    Jan 5, 2008
    Occupation:
    Test, Don't Guess!
    Location:
    Land of Cheese
    If your drawing is correct, each fixture needs a vent. The toilet is the only fixture there that is vented.
     
  3. Sponsor

    Sponsor Paid Advertisement

     
  4. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    The upstairs sink will either be vented, or not, depending on whether it has an independent pipe back to the stack. You connect the vent back to the stack 42" above the upstairs floor, or in the attic.
     
Similar Threads: Need help
Forum Title Date
Plumbing Forum, Professional & DIY Advice Need Help with Countertop Tile Repair Project Jan 10, 2015
Plumbing Forum, Professional & DIY Advice Need help with a shower drain in basement Dec 23, 2014
Plumbing Forum, Professional & DIY Advice HELP! I’ve Fallen, and I can’t.....OK not really....., but I do need help! Dec 11, 2014
Plumbing Forum, Professional & DIY Advice Water hammer issue, really need high level professional helps Dec 9, 2014
Plumbing Forum, Professional & DIY Advice Need help, advise for boiler rads and PEX pipe Oct 27, 2014

Share This Page