Is this too much direction change for trap arm?

Discussion in 'UPC Plumbing Code Questions' started by Chad_with_glued_fingers, Mar 13, 2017.

  1. Chad_with_glued_fingers

    Chad_with_glued_fingers New Member

    Joined:
    Feb 16, 2017
    Location:
    Oregon
    Due to some strange waste constrains, I'm looking at roughing my tub trap arm like what is shown in the drawing. Looks like there's a maximum horizontal direction change of 90* for a 1.5" trap arm. What I don't know is if the wye combo (highlighted in drawing) is factored in to the trap arm direction change. If I run the tub trap arm as shown will I be breaking code?


    Thanks
    FullSizeRender(1).jpg
    Chad
     
  2. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    Is everything in your drawing, except for the trap, horizontal with 1/4 inch per ft slope? Including the vent?
     
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  4. Chad_with_glued_fingers

    Chad_with_glued_fingers New Member

    Joined:
    Feb 16, 2017
    Location:
    Oregon
    That's correct.


    Chad
     
  5. Chad_with_glued_fingers

    Chad_with_glued_fingers New Member

    Joined:
    Feb 16, 2017
    Location:
    Oregon
    I don't know how to interpret the one sentence on horizontal direction changes in trap arms in the Oregon State Plumbing Specialty Code. OSPSC is based on the UPC.
    code.jpg

    Is a horizontally oriented wye-combo (that branches off of a wet vent) part of the 90* direction change limit?


    Chad
     
  6. clix

    clix Member

    Joined:
    Jan 28, 2017
    Location:
    Missouri
    Doesn't the vent need to go vertical before that 90* fitting (above the weir of the trap)? (Edit: nevermind, re-read your first response, I guess it's all horizontal but the trap should be twisted 90* into the page in the drawing.)
     
    Last edited: Mar 14, 2017
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