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Thread: Toilet waste line

  1. #1
    DIY Member K2's Avatar
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    Default Toilet waste line

    Hopefully a simple question, I didn't see anything directly related to it on the site:

    Can the waste line of a toilet run perpendicular to the toilet?

    I.e. the Toilet faces North/South and the waste line to the main stack would be run East/West.

    I guess in my mind it seems like this could cause flow problems but as long as the right grade is applied it should be o.k., no?

  2. #2
    In the Trades Gary Swart's Avatar
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    Default

    Assuming other aspects of running the line are done properly, this will be no problem.

  3. #3
    Moderator & Master Plumber hj's Avatar
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    Default toilet

    You can run it in any direction you want, even straight down, except upwards.

  4. #4
    DIY Member K2's Avatar
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    Default

    Thanks! Is there a limit on how far it drops before the Elbow that runs to the main stack? My joists are 6x6's.

  5. #5
    Forum Admin, Expert Plumber Terry's Avatar
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    Default

    My joists are 6x6's.
    Even below 2x12's would be fine.

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