DWV design. New bathroom on slab. one vent pipe?

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by McBV, Mar 27, 2013.

  1. McBV

    McBV New Member

    Messages:
    2
    Location:
    San Jose CA
    Thank you in advance for all observations and critiques.
    After reading this forum, I’ve decided to post my DWV design. This is a small bathroom over a concrete slab. The plumbing under shower pan is 2’’ pipe, followed by p-trap and WYE, tilted 45 deg straight to the wall and up thru the roof. Everything downstream is 3â€dia. and connected to main drain. (This is a single story house in California, if that makes any difference). My biggest concern is: one vent for two fixtures - Is this a big no-no or I have to one way or another vent the toilet independently?
    Thank you
    McBV


    slab1.jpg

    view from under the slab:
    slab2.jpg
  2. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,253
    Location:
    Cave Creek, Arizona
    where is the sink?
  3. McBV

    McBV New Member

    Messages:
    2
    Location:
    San Jose CA
    Hi,
    The sink is combined with the toilet (the brand is Caroma). It sits on the top of the tank. This is a small 80”x 80” bathroom – I could not find a room for a standalone sink.
    Thank you.
    McBV
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