Turning walkin shower stall into bathtub/shower combo

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Brian_Houston, Dec 26, 2005.

  1. Brian_Houston

    Brian_Houston New Member

    Dec 26, 2005
    Current shower drain (2" pipe) runs 5 feet, under slab, to vent stack (5" cast iron vent pipe) of toilet. Will need to move the drain 3ft to wall for new tub.
    After moving the drain, the complete length of the pipe will still be around 5 feet.
    We will have to reduce the drain line at the trap to 1 1/2 in order to connect the tub drain/overflow. Do I need to add another vent?
    Or is the main stack sufficient?

    I've uploaded chicken scratch sketch of drains. Please advise.

    Attached Files:

    Last edited: Dec 26, 2005
  2. hj

    hj Moderator & Master Plumber Staff Member

    Aug 31, 2004
    Cave Creek, Arizona

    As long as you install a trap at the end of the pipe, rather than the elbow you show, then it will work, even though it might be a bit longer than code would like it to be, depending on which one you are using.
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