Need help with adding tub drain and vent

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by fish4hc, Aug 10, 2014.

  1. fish4hc

    fish4hc New Member

    Joined:
    Aug 10, 2014
    Im a contractor and im remodeling my own bathroom and have some questions as im a carpenter by trade and do limited plumbing. I have slab now and had a tub but now a shower is going where the tub was and a drop in tub next to the shower. I have busted out concrete and found the 2" drain line venting up in the wall shown in first drawing and then reducing to 1 1/2 through ceiling as well as t off to 1 1/2 for existing tub trap in slab.

    So the plan is to add a drop in tub on the left running 2" line to shower p trap and then tying into the existing 2" line. The bottom drawing shows tying into the existing vent or do I need to run seperate vent stack up through roof at tub? Im in California and no permits but I want it to code. Any help or advice.
    Sorry I have 1st grade drawing skills.........

    Thanks
     

    Attached Files:

  2. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    p
    Your "first grade" drawing skills seem to show the tub tying in to the drain between the shower floor and its "P" trap. If so, that CANNOT be done and there may be a vent problem depending on exactly how you do the piping.
     
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