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Chain
6th Jul 2009, 11:01 PM
G'day
Could I have some advice please about how to correctly attach bracing to the main structure. I hope my photo's came through, otherwise nobody will have a clue what I'm on about.
If they did, well from pic3 you can see what I am up to. I am 1/3 of the way through putting up a free standing deck in my shed. Car to go underneath. Storage above.
I nearly have the lot clamped in a vertical & horizontal position ready for fixing the bracing. Knee braces will be at 4 corners. If you look at pic-c, I have blown up one corner & drawn in red where the brace will go. The brace (4"x2") will of course be attached at points labeled A.
I intend to use only one 10 mm bolt at each end of the brace. One fully through the first Joist (4"x2") which itself is bolted to the post, & one fully through the post (4"x4").
What I am after is confirmation that one tie (bolt) at each end of the brace is enough. I have been told that there must be 2 ties at each end of the brace. I would agree with this if the ties were screws. But I 'm using bolts. Any comments.

There will be more bracing by the way; won't just be relying on knee bracing.

Another question while I have some experienced attention. Should I fix the posts to the slab now (intend to use angle brackets & dyna bolts) , while I have the whole structure in a clamped vertical & horizontal position, before I start with the timber bracing or attach to the slab after the bracing. I feel 95 % sure I should fix the post to the slab now before bracing.
Thanks for any advice.

SilentButDeadly
7th Jul 2009, 03:18 PM
Bolt to slab then brace. Knee braces OK but why not put them in the top section rather than in the way of the car space? Brace and storage railing in one go - extra floor sheeting over the lot will make it very strong.

Put full cross brace in shed wall side of car space using wire & turnbuckles or Speedbrace or equivalent. Consider doing same at far end (shelving end).

Assuming many more joists over car? Block between every 600mm and sheet with ply or chipboard. That should brace top OK

Chain
7th Jul 2009, 09:51 PM
Silent
Yes there will be lots more joists. About 300 to 350 spacing. (Its not new timber I'm using) Can you tell me what is the main purpose of the blocks between the joists.
Thanks