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  1. #1
    Tomo
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    Default Big Dig

    Has anybody used LSB (Light Steel Beams) for under floor support ,I'm digging out under house removing concrete stumps ,needing to span upto 4m if possible, any info appreciated

  2. #2
    4K Club Member OBBob's Avatar
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    Not sure on the spans ... I've just always thought the LSBs can get a bit springy compared to other methods (depending on implementation of course). I imagine you probably need an engineer anyway ... or perhaps I should whisper that?

  3. #3
    Golden Member
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    we use 150x50x5 blue box bolted to existing bearer for this exact scenario.
    Spans 4 meters

  4. #4
    Tomo
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    Thanks guys

  5. #5
    Tomo
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    Mmmmmmmm engineers

  6. #6
    Tomo
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    Don't know any myself!!!

  7. #7
    1K Club Member Pulse's Avatar
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    Default Big Dig

    I thought LSBs weren't available anymore, I had to use a pfc when I was short for my carport. Who makes them now?


    Sent from my iPhone using Tapatalk

  8. #8
    4K Club Member OBBob's Avatar
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    Default Big Dig

    Quote Originally Posted by hrt22 View Post
    Don't know any myself!!!
    Ah... yes, I was thinking more from the perspective of being a requirement of the permit. Oops... am I speaking too loudly again.

  9. #9
    Tomo
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    Found this on the net LiteSteel Technologies. ..www.litesteelbeam.com.au for me it a weight issue a couple of guys can move them around easily enough and they can be doubled up back if need be....if ya want it right do it at night....

  10. #10
    Novice structBIMGuy's Avatar
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    It depends are there load bearing walls that need to be supported?
    You will need to provide photos and more info
    BTW you will also require planing approvals which mandate engineering drawings/certification

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  11. #11
    Apprentice (new member)
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    structBIMGuy - Approximately how much would a set of plans like that cost? Are we talking 200-500, or lots more?

  12. #12
    Novice structBIMGuy's Avatar
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    Hi CBG
    It shouldn't cost more than that, but it also depends on what's involved?
    I am a contractor in perth the majority of clients here ask me to do the whole job
    in which case the engineering & compliance is generally thrown in...but I do recommend you get 3 quotes locally.

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  13. #13
    1K Club Member havabeer's Avatar
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    from the bit of research i've been doing into beams (considering doing something similar to you) the term light steel beam basically deals with any channel up to about 250x90

    with the +300mm considered heavy

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