(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 5 of 5

Thread: Toilet drain clearance

  1. #1
    DIY Junior Member rcoatsie's Avatar
    Join Date
    Oct 2011
    Location
    RI
    Posts
    2

    Default Toilet drain clearance

    Hello, ..... I am going to install a toilet above a concrete slab, and run the drain over to the cellar (about 5' of run). I have about 9.5" of space between the bottom of the toilet and the concrete slab. Should I have enough clearance for the correct drain slope ?? I can shorten the 5' run if I have to.

    Thanks ........ Robin

  2. #2
    Nuclear Engineer nukeman's Avatar
    Join Date
    Nov 2009
    Location
    VA
    Posts
    696

    Default

    Are you saying that you are putting the toilet on a platform (2x10 joists)? I wonder since you say "I have about 9.5" of space between the bottom of the toilet and the concrete slab."

    Typically, you figure a slope of 1/4" per ft. You won't have the full 9.5" to work with as there needs to be room for the closet bend/elbow below the toilet.

    Please provide some additional details of the install so we can get a better idea of what you are actually dealing with.

  3. #3
    Forum Admin, Expert Plumber Terry's Avatar
    Join Date
    Aug 2004
    Location
    Bothell, Washington
    Posts
    14,191
    Blog Entries
    1

    Default

    You have plenty of space within a 2x10 joist space. The drain will be 1/4" per foot, or 1" in four feet.

  4. #4
    DIY Junior Member rcoatsie's Avatar
    Join Date
    Oct 2011
    Location
    RI
    Posts
    2

    Default

    Thanks for the reply. The slab area was part of an attached garage. It is a raised area now, but after we get this bathroom figured out, we are going to be pouring more concrete (radiant floor) around this area. They are 2x8 joists, that have been shimmed off the concrete with some pressure treated wood, so yes basically 2x10s. The bend elbow depth dimension is what I need, along with the 1/4" per ft ??

  5. #5
    Nuclear Engineer nukeman's Avatar
    Join Date
    Nov 2009
    Location
    VA
    Posts
    696

    Default

    Correct, but it sounds like you have plenty of room. You'll only need about 1.25" of slope over that 5', so you have plenty of room.

Similar Threads

  1. Replies: 2
    Last Post: 01-02-2011, 04:53 PM
  2. toilet height clearance
    By asenk in forum Toilet Forum discussions
    Replies: 7
    Last Post: 10-23-2010, 09:10 AM
  3. Tub drain clearance requirements
    By tomcat22 in forum Shower & bathtub Forum & Blog
    Replies: 1
    Last Post: 01-03-2008, 04:43 PM
  4. Toilet Clearance in Remodeled Attic
    By ejacobson in forum Toilet Forum discussions
    Replies: 2
    Last Post: 12-03-2005, 05:36 AM
  5. toilet installation - enough clearance?
    By cosmokramer in forum Toilet Forum discussions
    Replies: 4
    Last Post: 12-23-2004, 07:16 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •