Need To Lower P-traps On Back To Back Bathtubs

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by GMtech, Jul 11, 2020.

  1. GMtech

    GMtech New Member

    Joined:
    Jul 11, 2020
    Location:
    San Diego, California
    Hi all,

    Long time lurker now stumped!

    I'm working on my honey due list and yes I have been really bored with all the stay at home and distancing.

    I'm replacing the bathtub on the 2nd floor and it is backed up to the master bath tub. I ended up pulling both tubs as there was no room to work and I didn't want to cut holes in the ceiling on the rooms below.

    I will be installing a Kohler Villager tub and the specs call for 2-7/8 inch from the tub bottom to the bottom of the tub drain tee.

    The floor joist are 12" but there is a 2" tee (master bath shower drain) under the 1 1/2 double waste tee the tubs use. I did find a setup that will lower the double tee a little over an inch but would like more wiggle room, any suggestions?

    The master bathtub p-trap was lowered 1 1/4 inch below the elbow, is this up to code or is it ok to do this?

    Thanks much!
     

    Attached Files:

  2. Jeff H Young

    Jeff H Young In the Trades

    Joined:
    Feb 27, 2020
    Location:
    92346
    needs 2 inch tee for the tubs 1 1/2 " trap arms.
     
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  4. Mr tee

    Mr tee Member

    Joined:
    May 3, 2020
    Location:
    Montana
    You need a double fixture tee, NOT a double sanitary tee. Alas, it will be taller.
     
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