Back to back Kitchen sink and lav drain question

Discussion in 'IPC Plumbing Code Questions' started by samiller06, Jan 22, 2020.

  1. samiller06

    samiller06 New Member

    Joined:
    Jan 22, 2020
    Location:
    Virginia
    Hello all,

    First time I'm using this forum... I am doing a remodel with approximately back to back kitchen and lavatory sinks. The 2" drain and vent pipe is offset and I have a 2"x2"x2" sanitary tee to attach the 2" horizontal drain line to. I am considering attaching a 2"x 1 1/2" x 1 1/2" sanitary tee with a 1 1/2" 45 street elbow toward the kitchen and then a 1 1/2" 90 long sweep to the other end. I have been through the code book but still I am not sure if I can do this or not according to code. I attached a picture to try to show what I want to do. The position of beams in the crawlspace drive me to propose this solution. Any advice would be greatly appreciated.
     
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