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  1. 19th April 2008, 12:33 AM #1
    Williamstown
    Williamstown is offline Member
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    Default Dynabolts - Length?

    I'm bolting down a number post stirrups (200mm in heigh) using M10 Dynabolts. What length should the dyanbolts be, given the deck on really takes weight given its not high off the ground it wont have uplift and/or side forces. The 50mm looked a little short so I went for 75mm in length; however not sure if its overkill? (given i have to drill deeper)
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  2. 21st April 2008, 08:49 PM #2
    UteMad's Avatar
    UteMad
    UteMad is offline Senior Member
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    Depends how thick your concrete is.. most people use 50mm but 75 will be better provided your concrete is atleast 100mm thick.. you might find your tightening up a bit if you blow the bottom of the concrete out

    cheers utemad
    www.dialadeck.com.au
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  3. 22nd April 2008, 01:25 PM #3
    Bleedin Thumb's Avatar
    Bleedin Thumb
    Bleedin Thumb is offline Lumberlubber
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    I gave up useing dynabolts years ago. They ALWAYS stuff up...well about 1 in 5 do and they rust in no time.

    Its easier to use chemical anchors and stainless studs IMHO.
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