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  1. Ptwinter

    Will this pass inspection, or additional vent needed?

    Newbie here, thanks for your help with my research. I am building a one story addition that is not tied to the existing plumbing system. I have a couple of questions regarding the DWV in the UPC. 3" main drain pipe runs to 4" sewer. There are four connections to this drain pipe, from upstream...
  2. Ptwinter

    Will this build pass inspection?

    Newbie here, thanks for your help with my research. I am building a one story addition that is not tied to the existing plumbing system. I have a couple of questions regarding the DWV in the UPC. 3" main drain pipe runs to 4" sewer. There are four connections to this drain pipe, from upstream...
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