Laundry tub draining into basement floor drain - open pipe into drain hole

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by scott.oneill, Oct 24, 2010.

  1. scott.oneill

    scott.oneill New Member

    Joined:
    Oct 24, 2010
    Location:
    Kitchener, Ontario
    We've recently seen some water in the (finished) basement of our (100+ year old) home when we run the washing machine or use the basement shower. This has led to some investigation and some horrifying discoveries.

    Basically, it's like this:

    1) The laundry tub (into which the washing machine drains) and the basement shower drain into the same PVC pipe (t-joined). The shower drain is in the WALL in the CORNER of the shower and will get backflow from the laundry tub sometimes. The shower is tiled (badly, seeps water) and recent construction in the neighborhood (they redid the sewage and water mains over the last 2 years) has probably not helped. I know how horrible that is, but that's not the main problem.

    2) Said PVC pipe then runs out along a channel in the floor to what I can only assume is/was the floor drain for the basement. The pipe terminates in a 90-degree elbow connector, and a stub of pipe extends into the floor drain hole.

    3) The water we've seen in the basement is caused by the floor drain backing up, basically... I got in there today to see what was going on and found standing water in the drain hole.

    Now I'm no plumber, but this seems disastrously wrong to me. So my question is this:

    Is it DANGEROUS? Right now, my goal is to at least reestablish equilibrium with this hack job so that we have a shot at using the laundry without flooding the basement. I can live without the shower (and plan to simply cut and cap the end of the pipe that leads to the shower drain).

    Right now I've put some Liquid Plumr into the drain to try and unclog it. Phase 2 probably means going to the Roto-Rooter man or something similar.

    It seems obvious to me that the long term solution is to gut the basement and try again from bare floors/walls. But that's out of reach at the moment.

    Any and all suggestions are welcomed.

    Scott
     
  2. Redwood

    Redwood Master Plumber

    Joined:
    Dec 15, 2007
    Occupation:
    Service Plumber
    Location:
    Connecticut
    Phase 1 was a waste of time and money.

    I would go to Phase 2 but avoid companies with rooter in their name as premium pricing is associated with the name rooter.
     
  3. Sponsor

    Sponsor Paid Advertisement

     
  4. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    A floor drain should have a trap in it. A trap SHOULD have standing water in it - that is what traps the sewer gasses from getting into the house. But, both the laundry sink and the shower should have their own traps (and vents) and connect to the sewer directly, not drain into a floor drain. None of the add-ons (the laundry or shower) would pass code, and probably (I hope) were never permitted and inspected. They both should be redone. how best to accomplish that would depend on the layout of things.
     
  5. Gary Swart

    Gary Swart In the Trades

    Joined:
    Sep 1, 2004
    Location:
    Yakima WA
    One more thing. Do not use chemical drain cleaners. They not only don't work, they can damage you plumbing, and create a hazard for the plumber who eventually will have to work on the problem.
     
Similar Threads: Laundry draining
Forum Title Date
Plumbing Forum, Professional & DIY Advice Washer/Laundry Tub Not Draining Dec 28, 2008
Plumbing Forum, Professional & DIY Advice Correct routing for washing machine and laundry tub Feb 15, 2015
Plumbing Forum, Professional & DIY Advice Washing machine and Laundry Tub basement remodel Jan 11, 2015
Plumbing Forum, Professional & DIY Advice Please critique my bath & laundry DWV layout Jan 8, 2015
Plumbing Forum, Professional & DIY Advice Venting laundry drain Jan 6, 2015

Share This Page