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bearer and joists

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  1. #1
    Apprentice (new member)
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    Question bearer and joists

    Hi
    I have a question on 100mm Cee section used for bearers and Joists
    My question is, I am building a deck off the ground and was wondering what is the maximum distance between the bearers that I can go?
    I am fixing the joists at 450 centers and will be using cypress decking.
    There maybe a roof being fitted in the next 12 to 18 months.
    Also the size of the deck is 10m x 10m. Sorry it isn't all woodwork but I hope you can overlook that to help me out.

  2. #2
    Senior Member brynk's Avatar
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    gday willsy

    100mm cold-drawn galvanised, or hot-rolled c-section? at what thickness?

    r's brynk

  3. #3
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    Talking

    Hi Brynk

    Now you got me, I'm not sure i think maybe it is Cold-Drawn but I am not certain, I do know it is 1.5mm Galvanized but the other I am just guessing.
    Thanks for your help

    Willsy

  4. #4
    Senior Member DvdHntr's Avatar
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    If it's 1.5 then it's cold-formed. I would check out strammit to see whether they have some span tables.

  5. #5
    1K Club Member Pulse's Avatar
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    This will help,

    Really good FAQ

    Pulse

  6. #6
    A Member of the Holy Trinity echnidna's Avatar
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    Quote Originally Posted by Pulse View Post
    This will help,

    Really good FAQ

    Pulse
    Some great info on that website
    Thanks Pulse
    Regards
    Bob Thomas

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  7. #7
    DNL
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    I see in the linked website from Pulse there is advice regarding the metal ringing sound when walking on a timber deck supported by a metal sub-structure.

    I'm looking to build a deck and will use metal under, however the other week I saw the joists covered with a layer of rubber. This wasn't C section however, you could always replicate if prepared to spend the time cutting and fixing a rubber strip on top of the metal prior to fixing the timber decking. I could only assume this would alleviate the noise.

    cheers.
    Dave

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