Basement Bath rough-in with Diagram

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by BriTex, Jul 14, 2014.

  1. BriTex

    BriTex New Member

    Messages:
    3
    Hello,
    this is top view of layout. short distances with mostly 4" pipe, 2" shower trap arm enters top of 4", 2" vent lines on pump tank and after sink. Will this work? ( its difficult to add a shower vent).
    basement bath.png
  2. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,636
    Location:
    Cave Creek, Arizona
    No matter how "difficult" it will be the shower DOES need a vent.
    johnjh2o1 likes this.
  3. Terry

    Terry Administrator Staff Member

    Messages:
    15,005
    Location:
    Bothell, Washington
    The shower needs a vent, badly!
    The toilet will siphon that trap everytime, and the smell from that pump is going to be horrid. :(
  4. BriTex

    BriTex New Member

    Messages:
    3
    OK, thanks.....better safe than sorry, i'll break out more of 8" slab and put a? will a 1 1/2" vent work? or does it need to be 2"?
    new question: would a 2" trap/floor drain between tank and shower (w/ no extra vent) be a problem?
  5. BriTex

    BriTex New Member

    Messages:
    3
    here's a new diagram basement bath (1).png
  6. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,636
    Location:
    Cave Creek, Arizona
    Same problem that the shower had when it did not have a vent. You CANNOT connect things to a toilet's discharge without having its own vent.
  7. asktom

    asktom Member

    Messages:
    557
    Location:
    Victor, MT
    The vent must be between the shower trap and the connection to the toilet discharge.
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