Utility sink upstream clothes washer

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by B_Neiles, Jul 22, 2021.

  1. B_Neiles

    B_Neiles New Member

    Joined:
    Jul 14, 2021
    Location:
    Rapid City, SD
    Hello,

    I've noticed this photo used in conversations concerning laundry room plumbing and was my original plan. However, for reasons I can go into later, I need the clothes washer "downstream" of the utility sink. Would you simply run a horizontal branch below the standpipe p-trap, and take the washer trap arm to a san-tee, and down to this horizontal branch? [​IMG]
     
  2. Tuttles Revenge

    Tuttles Revenge In the Trades

    Joined:
    Oct 15, 2014
    Yes. First fitting would be a san tee low horizontally to your sink location. Atop that san tee and high enough that the bottom of the trap clears over the top of the sink drain.
     
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  4. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    Utah use IPC 2015.

    Is that sink a laundry sink that is right next to the standpipe? If so, there is ones solution:
    http://media.iccsafe.org/news/icc-enews/2018v15n13/2018SC-IPC802.pdf describes a standpipe trap shared with a laundry tub. As I read it, the 2018 change was to allow it in apartments, and this was available for houses in earlier versions.

    [​IMG]

    If not, under IPC, once other waste joins the laundry standpipe, officially the pipe size should increase from 2 to 3 inch. You may be able to get a pass on that for existing available drain.
     
    Helper Dave likes this.
  5. B_Neiles

    B_Neiles New Member

    Joined:
    Jul 14, 2021
    Location:
    Rapid City, SD
    Unfortunately in the UPC, should have started with that. So, I'm pretty sure I can't use the above solution? Thanks for the quick replies.
     
  6. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    But with UPC you can run both traps into the 2 inch drain line without a variance, so good.
     
    Last edited: Jul 22, 2021
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