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Thread: Soil Stack

  1. #1
    Join Date
    Aug 2008

    Default Soil Stack

    My house was built in 1930 and is a conventional foundation. I want to move the toilet 90 degrees and 1 foot from where it is now. While inspecting the plumbing under the house, I noticed that the toilet appears to have it's own connection to the sewage system separate from the tub and sink. The tub and sink appear to have their own connection to the sewage system as well. The toilet does not appear to be vented, but the tub and sink are. Is this a correct plumbing configuration and can I move the toilet to it's new location without a vent? Is it customary to have separate tie in's to the sewage system?


  2. #2
    Join Date
    Feb 2008
    Nashville, TN

    Default Re: Soil Stack

    When you say "conventitial" I think slab, which mean you would not be able to crawl under the house and look at the piping. Now, you have said you have a crawl space so that is good for re-work. As far as the description of "seperate" tie-in, agian confusion.

    Do you mean that the sewer pipe to the toliet goes out to the main sewer without any branches? And do you mean the tub and sink also tie in to the main sewer without any tie in to the rest of the house plumbing?

    Also, being built in the 1930's is the pipe cast iron? How will you tie in the new PVC to cast iron? If the toilet is a slow flush right now, it may mean that it isn't properly vented. But, if it flush okay it would seem to me that it is vented. Now are you going to re-use the toilet from before. The reason I ask is because of the gallons per flush being 3.5 or higher is no longer needed and the newer standard is 1.6.

    A couple things to think about about.
    Process of elimination. Good luck.

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