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  1. #1
    Richard Roshak's Avatar
    Richard Roshak Guest

    Default Plumbing/venting

    This sink and drain are located in a finished basement. The pipe through the rear of the cabinet is the venting pipe and the one through the bottom is the drain. I thought the vent had to be above the trap? Am I wrong?
    Rich

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  2. #2
    Join Date
    Mar 2007
    Location
    Spring Hill (Nashville), TN
    Posts
    5,829

    Default Re: Plumbing/venting

    Quote Originally Posted by Richard Roshak View Post
    This sink and drain are located in a finished basement. The pipe through the rear of the cabinet is the venting pipe and the one through the bottom is the drain. I thought the vent had to be above the trap? Am I wrong?
    Rich
    It is all wrong. You should not have a vent opening below the trap weir, except on a toilet.

    Scott Patterson, ACI
    Spring Hill, TN
    www.traceinspections.com

  3. #3
    Join Date
    Feb 2008
    Location
    Chicago IL
    Posts
    1,940

    Default Re: Plumbing/venting

    It is soooo wrong. Scott is right.

    www.aic-chicago.com
    773/844-4AIC
    "The Code is not a ceiling to reach but a floor to work up from"

  4. #4
    Join Date
    Mar 2007
    Location
    Hudson, WI
    Posts
    645

    Default Re: Plumbing/venting

    Quote Originally Posted by Scott Patterson View Post
    It is all wrong. You should not have a vent opening below the trap weir, except on a toilet.
    Here is a diagram of what Scott is saying.




  5. #5
    Joshua Hardesty's Avatar
    Joshua Hardesty Guest

    Default Re: Plumbing/venting

    Now I believe a vent through the roof is always preferred but haven't they heard of an AAV? It's like these people know enough to try to vent it but absolutely nothing beyond that.


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