Sink drain pipe height

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by joewadd, Dec 18, 2012.

  1. joewadd

    joewadd New Member

    Dec 17, 2012
    Winchester CA
    I am adding a new toilet and sinks to an existing 3" drain in our shop. I've y-ed off that drain to 2" for the sinks, I will have 1 sink inside bathroom and 2 sinks out side that wall for dual shop sinks.

    Is there a height the drain pipe should be at coming out of the wall to except the unions for the sinks?

    Or does it depend on the sinks and theres not a specific height?

    My existing bathroom has a pipe coming out of the wall for the sink at 9.5" to the center of the drain pipe.


    How do I go about posting a pic of what I've got going on?
  2. DavidSeon

    DavidSeon New Member

    Jul 19, 2012
    MS Gulf Coast
    Select the "Insert Image" at the top of the edit window and upload from your PC.
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  4. Terry

    Terry Administrator Staff Member

    Aug 17, 2004
    Bothell, Washington
    It they are lavs, then 12" below the counter height works, plus or minus.
  5. hj

    hj Moderator & Master Plumber Staff Member

    Aug 31, 2004
    Cave Creek, Arizona
    The worksurface and the types of sinks determines the "optimum" drain height, but it is much better to err on the low side, rather than being too high.
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