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Thread: s-trap or p-trap for tub??

  1. #1
    DIY Member cruiser's Avatar
    Join Date
    Jul 2007
    Location
    California
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    44

    Default s-trap or p-trap for tub??

    Hi folks,

    I'm ready to install my whirlpool in my new basement bathroom. Ive cut into the slab and have plenty or space to work with but which trap works best? A p-trap or an s-trap? This tub will also be used as a shower also if that makes any difference.

    Thanks all

    Martin

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    Location
    New England
    Posts
    21,405

    Default

    P-trap. S-traps aren't to code. A tub gets a 1.5" drain, a dedicated shower would need a 2". Don't forget the vent line.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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