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  1. #1
    Join Date
    Feb 2011
    Location
    Ohio
    Posts
    73

    Default Post support for beam

    I was told by someone, that this metal support post (see photo) was installed upside down. He stated that the threaded part sould be at the bottom, adjusted on the footer, then buried by the concrete slab / floor, of the basement. I did observed a sticker on it that had no load information or whether up or down was proper. (I know it is not properly attached)

    Any thoughts or information on this "up or down" issue?

    Post was under a floor beam of a single family home w/ basement.

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  2. #2
    Join Date
    Mar 2007
    Location
    Connecticut
    Posts
    1,828

    Default Re: Post support for beam

    That is a temporary screw jack and is not allowed as permanent support.
    And personally, if I were to use one, I would have the screw at the top where I could access it easily and moisture levels at the bottom would not be rusting up the thing.
    Of course, that would be if I were to use one
    I think they are great, when used within the proper parameters.


  3. #3
    Hector Acevedo's Avatar
    Hector Acevedo Guest

    Default Re: Post support for beam

    We call that a jack post. It's a temporary post used to jack or level the floor or structure. Once the floor or wall has been adjusted it's replaced with a permanent post. I have never seen one installed with the threads in the down position. And I would not inbed it in concrete.


  4. #4

    Default Re: Post support for beam

    If it is a single piece 3" column it can be used as a permanent support, if the threads are not covered by the concrete at the bottom they are supposed to be disabled to prevent tampering. It is the sectional 2.5" telescoping columns that are not allowed in the US as permanent supports, my understanding is that they are allowed in Canada though.

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  5. #5
    Join Date
    Feb 2009
    Location
    Southern Vancouver Island
    Posts
    4,549

    Default Re: Post support for beam

    Quote Originally Posted by John Goad View Post
    If it is a single piece 3" column it can be used as a permanent support, if the threads are not covered by the concrete at the bottom they are supposed to be disabled to prevent tampering. It is the sectional 2.5" telescoping columns that are not allowed in the US as permanent supports, my understanding is that they are allowed in Canada though.
    In Canada, they would allow you to use a pile of Stab-Lok breaker panels, mounted on their sides, to hold up the floor, but it's hard to find that many surplus panels, because they are mostly still being used as breaker panels. They have plenty of wood, though, so you never see screw jacks, either.

    To the OP, look at the way the post was manufactured. I see a crimp in the end of the pipe to hold the threaded end. That makes it a cheap temporary jackpost, IMO. I just describe it and advise a repair to a permanent post, fastened top and bottom.

    Last edited by John Kogel; 03-17-2011 at 09:07 AM.
    John Kogel, RHI, BC HI Lic #47455
    www.allsafehome.ca

  6. #6
    Join Date
    Mar 2007
    Location
    Chicago, IL
    Posts
    2,797

    Default Re: Post support for beam

    I normally don't get too excited by telescoping ("telescopic") columns, but this seems a *bit* extreme...

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  7. #7
    Join Date
    Mar 2007
    Location
    Lake Barrington, IL
    Posts
    1,363

    Default Re: Post support for beam

    Some of these posts are rated for permanent applications. The top and bottoms must be secured and the screw post be tack welding to prevent it from being turned.

    Eric Barker, ACI
    Lake Barrington, IL

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