Need quick advice on 3 floor bathroom layout

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by Jozart, Feb 11, 2013.

  1. Jozart

    Jozart New Member

    Messages:
    3
    Location:
    South Carolina
    question.gif

    I have attached a sketch of what I intend to do to add a bath to a thrid floor attic. A 1/2 bath was roughed in but I wanted to change the horizontal drain to accomodate a shower. I can only add a seperate vent to the shower upstream of the shower p-trap is this OK? I may not even need one given that its also vented (wet) via a kitchenette sink I will also add. This is vented through a seprate stack.

    See sketch for details. NOTE: RED lines indicate vertical runs

    Thanks in advance.
    Joe
  2. Jozart

    Jozart New Member

    Messages:
    3
    Location:
    South Carolina
    Please note that the 1 1/2" vent upstream of the shower runs parallel with the 2" drain before turning up (30" run) to go vertical through the roof on a seperate vent
  3. Terry

    Terry Administrator Staff Member

    Messages:
    14,763
    Location:
    Bothell, Washington
    A kitchen can't wet vent any bathroom fixtures.
    Wet venting is only for a bathroom group on the same floor.

    If you have a sink above, the waste for that will have to come in lower or downstream of the shower.
  4. Jozart

    Jozart New Member

    Messages:
    3
    Location:
    South Carolina
    Thats what I thought you'd say. I can tie into the drain down stream of the shower with a little work. How abour the vent thats near the shower wye? is that OK?
  5. cacher_chick

    cacher_chick Test, Don't Guess!

    Messages:
    3,236
    Location:
    Land of Cheese
    The vent for the shower should come off the trap arm, not the stack.
  6. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,251
    Location:
    Cave Creek, Arizona
    IF you leave the stack the way it is, and reroute the sink connection below the shower, with its own vent, then you do NOT need that separate vent.
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