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  1. 6th Apr 2016, 08:15 AM #1
    hrt22
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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
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  2. 6th Apr 2016, 08:27 AM #2
    OBBob
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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?
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  3. 6th Apr 2016, 08:38 AM #3
    Optimus
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    we use 150x50x5 blue box bolted to existing bearer for this exact scenario.
    Spans 4 meters
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  4. 9th Apr 2016, 12:31 PM #4
    hrt22
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    Thanks guys
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  5. 9th Apr 2016, 12:33 PM #5
    hrt22
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    Mmmmmmmm engineers
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  6. 9th Apr 2016, 12:43 PM #6
    hrt22
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    Don't know any myself!!!
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  7. 9th Apr 2016, 02:16 PM #7
    Pulse
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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?


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  8. 9th Apr 2016, 10:14 PM #8
    OBBob
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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.
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  9. 9th Apr 2016, 11:03 PM #9
    hrt22
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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....
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  10. 11th Apr 2016, 10:59 AM #10
    structBIMGuy
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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. 17th Apr 2016, 10:13 PM #11
    ColBatGuano
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    structBIMGuy - Approximately how much would a set of plans like that cost? Are we talking 200-500, or lots more?
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  12. 18th Apr 2016, 10:42 PM #12
    structBIMGuy
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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. 19th Apr 2016, 08:25 AM #13
    havabeer
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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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