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  1. #1
    Join Date
    Oct 2007
    Location
    Bourke
    Posts
    2

    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
    Join Date
    Sep 2007
    Location
    Canberra
    Posts
    154

    Default

    gday willsy

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

    r's brynk

  3. #3
    Join Date
    Oct 2007
    Location
    Bourke
    Posts
    2

    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
    Join Date
    Oct 2007
    Location
    Seven Hills, NSW
    Posts
    159

    Default

    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
    Join Date
    Jan 2005
    Location
    Newcastle/Tamworth
    Posts
    416

    Default

    This will help,

    Really good FAQ

    Pulse

  6. #6
    Join Date
    Feb 2003
    Location
    Garvoc VIC AUSTRALIA
    Posts
    3,208

    Default

    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

    www.wombatsawmill.com

  7. #7
    Join Date
    Aug 2007
    Location
    ACT
    Posts
    9

    Default

    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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