Connecting P-trap to drain for tub

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by vinceliberto, May 8, 2010.

  1. vinceliberto

    vinceliberto New Member

    Messages:
    5
    Location:
    maryland
    In the process of installing a bathroom in my unfinished basement. I have an existing rough in and have found the tub drain under the concrete. I have opened up a whole the size recommended per the instructions for my tub. The problem I have is that with the angle and location of the 2" drain I can not get far enough back on the drain to cut it to install the P-trap. My question is can I install two 90's out of the tailpiece from the tub and then the P-trap to be able to connect it further forward on the drain? I've attached a picture of what I'm talking about. Obvisouly I understand that my pick has a combination of 1 1/2 and 2" fittings, I just grabbed what I had sitting around to explain what I meant.

    Thanks for the help!

    Attached Files:

  2. Inspektor Ludwig

    Inspektor Ludwig Journeyman/Inspector

    Messages:
    167
    Location:
    In the good ol' UPC
    Looks ok to me. Good luck!
  3. jc60618

    jc60618 DIY Junior Member

    Messages:
    88
    Location:
    Chicago
    Here in Chicago code says that when a p trap is used on a bath tub it shall be directly below the tub overflow without any offsets. However I have run into this problem in a large hotel remodel were this was not possible and had to offset. Sometimes you just have to make it work. If your going to offset it and have room I would use two 45 degree elbows instead, that would make it easier to rod in the future. using two 45 will reduce the unecessary bend.
    Last edited: May 9, 2010
  4. Terry

    Terry Administrator Staff Member

    Messages:
    15,293
    Location:
    Bothell, Washington
    I would loose the nut on the p-trap and go with a solvent weld.
    Those nuts tend to break later.

    And if you can use 45's, that would be better.
    Is there no way that you can cut some pipe and line it up better?
  5. shacko

    shacko Master Plumber-Gas Fitter

    Messages:
    561
    Location:
    Rosedale, Md
    On a GOOD basement rough-in a trap is included under the slab, did you look?
  6. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,262
    Location:
    New England
    Also, keep in mind that that 90 coming out of the outlet of the trap can point backwards....this would seem to nearly align with your overflow and drain connection. Depends on if you have a little offset available.
  7. vinceliberto

    vinceliberto New Member

    Messages:
    5
    Location:
    maryland
    I have about 2' exposed and all I see is a straight 2" section coming thru the hole I've made. I just assumed there is no trap. Could it be further back under the slab?
    Last edited by a moderator: May 10, 2010
  8. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,262
    Location:
    New England
    Unlikely...a trap should be directly underneath the drain.
  9. shacko

    shacko Master Plumber-Gas Fitter

    Messages:
    561
    Location:
    Rosedale, Md
    Most rough--ins for tubs and showers in concrete have a box around them, I use a 8x12in for a tub and a 8x8in. for a shower, you will need something similar when it comes time to hook up, if you have 2ft. exposed down to the dirt, you probably don't have a trap and you have plenty of room for your hook-up.
  10. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,032
    Location:
    Cave Creek, Arizona
    drain

    You may be confusing us, but if you have 2' of pipe exposed, you should have plenty of room to cut it back so you don't have to make that offset.
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