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  1. #1
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    Default Bottom plate in contact w/ concrete floor (commercial)

    Second story of two story commercial. The floor is a poured gypcete. Noticed that the bottom plate was in contact with the gypcrete floor. Is this a concern as it is inside the building, not outside.

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  2. #2
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    Default Re: Bottom plate in contact w/ concrete floor (commercial)

    Is it pressure treated lumber?

    "The Code is not a peak to reach but a foundation to build from."

  3. #3
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    Default Re: Bottom plate in contact w/ concrete floor (commercial)

    Quote Originally Posted by Bruce Ramsey View Post
    Is it pressure treated lumber?
    Second floor, must be greater than 18" from soil, don't you think?

    The beatings will continue until morale has improved. mgt.

  4. #4
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    Default Re: Bottom plate in contact w/ concrete floor (commercial)

    Quote Originally Posted by Bruce Ramsey View Post
    Is it pressure treated lumber?
    I would assume so, but it can't be viewed. The concrete is up against it, then the wall framing is on top of that. He's just concerned about the moisture from the concrete interacting with the wood.


  5. #5
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    Default Re: Bottom plate in contact w/ concrete floor (commercial)

    Quote Originally Posted by Vern Heiler View Post
    Second floor, must be greater than 18" from soil, don't you think?
    Yes. He was concerned about the water content in the cement being in contact with the bottom plate. Assuming it is pt and it is in the interior of the building, i see it as a non factor. what say you?


  6. #6
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    Default Re: Bottom plate in contact w/ concrete floor (commercial)

    Quote Originally Posted by Steve C. View Post
    Yes. He was concerned about the water content in the cement being in contact with the bottom plate. Assuming it is pt and it is in the interior of the building, i see it as a non factor. what say you?
    There is no requirement for PT if more than 18" above the soil, so I don't see any problem. If the concrete at the second story is that wet, you've got bigger problems!

    The beatings will continue until morale has improved. mgt.

  7. #7
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    Default Re: Bottom plate in contact w/ concrete floor (commercial)

    The problem is not the water in the concrete mix but the wicking of water from the soil up into the wood transported by the concrete. As others have said, not an issue if you are more than 18" above grade. The limited amount of water in the mix will reach the same moisture content as the lumber in short order. Not a problem.

    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

  8. #8
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    Default Re: Bottom plate in contact w/ concrete floor (commercial)

    Quote Originally Posted by Vern Heiler View Post
    There is no requirement for PT if more than 18" above the soil, so I don't see any problem. If the concrete at the second story is that wet, you've got bigger problems!
    Completely agree. Thank you


  9. #9
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    Default Re: Bottom plate in contact w/ concrete floor (commercial)

    Quote Originally Posted by Jim Luttrall View Post
    The problem is not the water in the concrete mix but the wicking of water from the soil up into the wood transported by the concrete. As others have said, not an issue if you are more than 18" above grade. The limited amount of water in the mix will reach the same moisture content as the lumber in short order. Not a problem.
    Great. Thank you.


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