(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 2 of 2

Thread: Drain droppage - Maximum - Minimum - Precise?

Hybrid View

  1. #1
    DIY Junior Member PoetPatriot.com's Avatar
    Join Date
    Mar 2012
    Location
    Auburn, Washington
    Posts
    2

    Default Drain droppage - Maximum - Minimum - Precise?

    It is my assumption that when a 1/4 in drop is stated that it means 1/4th inch for each foot. Is that correct?

    I also assume that the drop can be greater and not be a problem. Although I expect the greater the drop the more water is needed to move the solids.
    Am I right on either?

    I am assuming the drop can be greater by my observation of my wall mount toilet. It appears to dump down straight through the wall to the pipes under the house.

    When my house was built a wall mount toilet was placed in the full bathroom and a regular floor mount in the 1/2 bathroom. Both are at the same sitting height. So what would the advantage of the Wall mount back discharge be?

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    Location
    New England
    Posts
    21,405

    Default

    The liquid and solids fall at the same rate - gravity has that effect on things! On a typical sewer line, the solids get pushed along with each water discharge, they don't continue to the end on their own because of friction. Don't worry about it...just maintain at least the 1/4"/foot minimum, and you should be okay.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

Similar Threads

  1. Maximum number of shower heads on a inch and half plumbing drain line
    By johnfrwhipple in forum Shower & bathtub Forum & Blog
    Replies: 7
    Last Post: 11-20-2010, 09:36 AM
  2. minimum distance from shower drain centerline to joist
    By lwylie in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 2
    Last Post: 03-31-2010, 03:38 PM
  3. Minimum pressure test for drain lines ?
    By Mudball in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 15
    Last Post: 08-31-2009, 01:58 PM
  4. toilet drain vertical minimum
    By glebbscout in forum Toilet Forum discussions
    Replies: 3
    Last Post: 11-26-2006, 06:05 AM
  5. what is maximum drain pipe length allowed
    By t-roy in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 1
    Last Post: 03-02-2005, 06:58 PM

Tags for this Thread

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
  •