s-trap or p-trap for tub??

Discussion in 'Shower & Bathtub Forum & Blog' started by cruiser, Jan 15, 2008.

  1. cruiser

    cruiser Member

    Jul 24, 2007
    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

  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    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.
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