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  1. #1
    Scott Dana's Avatar
    Scott Dana Guest

    Default Extra discharge pipe

    I came across an extra section of pipe attached to the main plastic discharge line, and I have no idea what it's for. It's capped on the end as shown in the photos. Any ideas?

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  2. #2
    Scott Dana's Avatar
    Scott Dana Guest

    Default Re: Extra discharge pipe

    working on a better photo


  3. #3
    Scott Dana's Avatar
    Scott Dana Guest

    Default Re: Extra discharge pipe

    Better (hopefully) photo attached.

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  4. #4
    Join Date
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    Default Re: Extra discharge pipe

    Scott
    Just a guess, but may have been planned to be to sewage pump line. Decided to run a different line so pump would not have to pump as high.
    But again, just a guess.
    I think it should be removed, could fill with water, extra weight could it break off.

    ' correct a wise man and you gain a friend... correct a fool and he'll bloody your nose'.

  5. #5
    James Duffin's Avatar
    James Duffin Guest

    Default Re: Extra discharge pipe

    My guess is a line that was run for a vent. Where does the other end of the pipe terminate?


  6. #6
    Scott Dana's Avatar
    Scott Dana Guest

    Default Re: Extra discharge pipe

    If you can see the red arrows I drew, the line terminates with a cap Also, there was a vent line coming from the sanitary pump that is not visible.


  7. #7
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    Mar 2007
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    Cool Re: Extra discharge pipe

    The connections are wrong and where's the vent piping?
    Perhaps they abandoned what would appear to be a bad installation?

    Jerry McCarthy
    Building Code/ Construction Consultant

  8. #8
    Bob Mayer's Avatar
    Bob Mayer Guest

    Default Re: Extra discharge pipe

    Does it go through the roof, or at least into the attic? I know this is not likely, but could it be for a later installation of radon mitigation? It looks like it might be the right size.

    - BOB


  9. #9
    Join Date
    Apr 2007
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    state of jefferson
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    Default Re: Extra discharge pipe

    a sanitary t used in a vertical to horizontal drain line connection is wrong exception is if it is used as a vent.


  10. #10
    Join Date
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    Default Re: Extra discharge pipe

    Regardless, it goes vertically down into a horizontal line through a sanitary tee.

    Sanitary tees are approved for use from horizontal into vertical - P3005.1 and Table P3005.1, IRC.

    Plus, you wrote up that exposed facing on the insulation, right?

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  11. #11
    Scott Dana's Avatar
    Scott Dana Guest

    Default Re: Extra discharge pipe

    I'm thinking based on some comments, that it was a first attempt at connecting to the sanitary pump. And the pump did have a vent pipe that is not visible, separate from all the visible pipe in the photo.

    I did not write up the insulation issue...I guess I was too enthralled with the pipe :0


  12. #12
    Join Date
    Apr 2007
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    state of jefferson
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    522

    Default Re: Extra discharge pipe

    what is wrong with exposed facing in an underfloor area?


  13. #13
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    Default Re: Extra discharge pipe

    Quote Originally Posted by brian schmitt View Post
    what is wrong with exposed facing in an underfloor area?
    Brian,

    There is an area on *each* batt which states something like this:

    WARNING: RISK OF FIRE! DO NOT LEAVE THIS FACING EXPOSED! The facing must be in contact with approved building materials.

    There are variations of the wording, but you get the idea.

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  14. #14
    Ron Keeney's Avatar
    Ron Keeney Guest

    Default Re: Extra discharge pipe (AND EXPOSED INSULATION FACING)

    And the reason for that warning is that the Kraft-paper insulation facing will flash-burn if ignited and spread a fire in the crawl space across the entire underside of the house within minutes, drastically reducing the time to get out. That's the point of a "flame-spread rating". See IBC Section R302.10 limiting fire-spread rating of the facing or requiring that it be "in substantial contact with an unexposed surface".


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