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  1. #1
    Join Date
    May 2009
    Location
    New Jersey
    Posts
    87

    Default Drain piping under bathroom sink

    This does not look correct. Almost looks like a "s" trap.

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  2. #2
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    27,352

    Default Re: Drain piping under bathroom sink

    Correct - that amounts to the same thing as an S-trap.

    I would write it up as an unapproved trap and its configuration is not permitted by code, and that it is likely to self-siphon it's trap seal out and allow sewer gas especially in to the building.

    Jerry Peck
    Construction Litigation Consultant ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  3. #3
    Join Date
    Nov 2016
    Location
    Ohio
    Posts
    7

    Default Re: Drain piping under bathroom sink

    Quote Originally Posted by Jerry Peck View Post
    Correct - that amounts to the same thing as an S-trap.

    I would write it up as an unapproved trap and its configuration is not permitted by code, and that it is likely to self-siphon it's trap seal out and allow sewer gas especially in to the building.
    I agree with Jerry, and while it may be working and not currently leaking, it is an unapproved trap that is potential dangerous to the occupants.


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