Side draining bath tub

Discussion in 'Shower & Bathtub Forum & Blog' started by ej43, Jun 3, 2009.

  1. ej43

    ej43 New Member

    Joined:
    Jun 3, 2009
    I need to install bathtub on the floor where ther is no space for P-trap.

    How far from a tub drain can the trap be located?

    That is, can I run a horizontal drain for 3 feet (at about 1 inch drop) and install a P-trap and a vent 3 feet away from the tub drain?

    Or is it asking for trouble?
     
  2. FloridaOrange

    FloridaOrange Plumbing Designer

    Joined:
    Dec 2, 2005
    Occupation:
    Plumbing Designer
    Location:
    SW Florida
    Trap must be below the fixture drain.
     
  3. Sponsor

    Sponsor Paid Advertisement

     
  4. geniescience

    geniescience Homeowner

    Joined:
    Nov 27, 2005
    Occupation:
    ditto
    Location:
    humid summers hot, humid winters cold
    ?

    I paid a Master Plumber and he installed the P trap 3 feet away.

    I don't think "code" requires it to be under the tub drain.

    A couple years ago I installed a sink Ptrap a few feet away from the sink drain and I got input here from hj terry and others on how to do it.
     
  5. FloridaOrange

    FloridaOrange Plumbing Designer

    Joined:
    Dec 2, 2005
    Occupation:
    Plumbing Designer
    Location:
    SW Florida
    You're right, I looked back at the code again.
    This is 2009 Florida Plumbing Code, it is similar and sometimes identical to the IPC.

    1002.1 Fixture traps. Each plumbing fixture shall be separately trapped by a water-seal trap, except as otherwise permitted by this code. The vertical distance from the fixture outlet to the trap weir shall not exceed 24 inches (610 mm) and the horizontal distance shall not exceed 30 inches (610 mm) measured from the centerline of the fixture outlet to the centerline of the inlet of the trap
     
  6. ej43

    ej43 New Member

    Joined:
    Jun 3, 2009
    Thanks, that looks encouraging.

    Besides violating the Florida Plumbing code by 6 inches, what problems can I encounter by placing the trap 3 feet away?
     
  7. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    There will be a (hopefully small) accumulation of soap scum, body oils, dead skin, etc. build-up on the walls of the pipe. 3' of that can smell pretty raunchy. That's why the better location for the trap is right under the fixture...the water in the trap blocks not only traditional sewer gasses, but the smells from the drain line going there.
     
  8. FloridaOrange

    FloridaOrange Plumbing Designer

    Joined:
    Dec 2, 2005
    Occupation:
    Plumbing Designer
    Location:
    SW Florida
    Are you in Florida? Your location or jurisdiction might differ.
     
  9. ej43

    ej43 New Member

    Joined:
    Jun 3, 2009
    Good point.
    How would I clean the pipe?

    BTW, not sure if it is important here, but everything will be draining into the sewage ejection system and then pumped up.
     
  10. geniescience

    geniescience Homeowner

    Joined:
    Nov 27, 2005
    Occupation:
    ditto
    Location:
    humid summers hot, humid winters cold
    30 inches is 762 mm. A limit has to be imposed at some point. Stretching it is a normal human endeavor.

    If this quote was retyped, it's data entry error.
    If it's copied, it's a typo in the original document.
    24 inches (610 mm)
    30 inches (610 mm)
    If I were you, I'd measure everything in metric and allow myself a margin of error in my favor. :)
     
  11. SewerRatz

    SewerRatz Illinois Licensed Plumber

    Joined:
    Nov 20, 2008
    Occupation:
    Chicago Illinois Licensed Plumber
    Location:
    Chicago, IL
    24" in Illinois

    Distance of Trap to Fixture. The developed length from the fixture outlet to the trap weir shall not exceed 24 inches, except when an interceptor is used as a trap, it shall be located as close as possible to the fixture. The maximum developed length from the fixture outlet to the inlet of the interceptor shall not exceed 5 feet. (See Appendix D: Illustration B.) The standpipe inlet for an automatic clothes washer shall not exceed 48 inches above the weir of a trap.

    So your best bet is to contact your local building department and ask the plumbing inspector there what they require locally. State codes are the bare minimum, which means counties, townships, and cities can make the code even tougher.
     
    Last edited: Jun 5, 2009
Similar Threads: Side draining
Forum Title Date
Shower & Bathtub Forum & Blog The downside to slow draining showers Aug 20, 2014
Shower & Bathtub Forum & Blog Installing a fan inside your steam shower: Good idea or bad Tuesday at 5:05 AM
Shower & Bathtub Forum & Blog Need Opinions on Grout Water Stains Outside of Curbless Shower Saturday at 11:05 AM
Shower & Bathtub Forum & Blog Where to cut tile when it's too cold outside: Tile Setter tips Dec 4, 2014
Shower & Bathtub Forum & Blog The downside to Fire Stopping on a Toto Wall Hung Toilet Install Dec 3, 2014

Share This Page