Trap in slab

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by garwayne, Nov 7, 2008.

  1. garwayne

    garwayne New Member

    Joined:
    Oct 29, 2008
    Is it permissable, or just a good/bad idea, to have the trap roughed in at an elevation higher than below the slab? In other words the trap would be encased in concrete. My reason for exploring this is to save some elevation.
    Thanks,
    Gary
     
  2. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    trap

    To quote Dirty Harry Callahan, "A man's gotta do what he's gotta do." If that is where conditions require that it go, then it goes there, although an inspector might have a problem with it and wonder why it had not been planned so it did not occur there. And if the pipe to the trap is also in the concrete, which it should be under these conditions, then the concrete will probably crack above it.
     
  3. Sponsor

    Sponsor Paid Advertisement

     
  4. garwayne

    garwayne New Member

    Joined:
    Oct 29, 2008
    Good point about the concrete cracking, hadn't thought about that. I'll try to keep it as thick as possible. I'll take it then that it's not entirely rare that pipes run encased for a distance in concrete as opposed to stubbing right through?
     
  5. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    pipe

    It is rare, because inspectors usually reject it. IF you had to do it, most require that it be enclosed/covered so it is not in direct contact with the concrete.
     
  6. garwayne

    garwayne New Member

    Joined:
    Oct 29, 2008
    Thanks for your help hj.
     
Similar Threads: Trap slab
Forum Title Date
Plumbing Forum, Professional & DIY Advice Trap under slab - concrete over or leave exposed? Oct 23, 2009
Plumbing Forum, Professional & DIY Advice S Trap at Big Box Store Saturday at 6:36 PM
Plumbing Forum, Professional & DIY Advice CAN I PUT P TRAP HERE? Thursday at 7:27 AM
Plumbing Forum, Professional & DIY Advice Is there a cap for a trap adapter? Wednesday at 11:03 PM
Plumbing Forum, Professional & DIY Advice Missing P Trap? Wednesday at 1:40 PM

Share This Page