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Old 02-09-2013, 09:25 AM   #1
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Post and joist attachment


I am planing a 12x18 screen porch addition with double 2x8 band joists. I want to notch the outside top of the 6X6 posts to accept the double joists flush. I understand this is the strongest way and I really lihe the appearence. However, if I notch the corner posts to accept the front and side joists there will only be a 2.5" square stub left to bolt through. Is this acceptable? What are some alternatives? Any suggestions will be greatly appreciated.
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Old 02-09-2013, 09:36 AM   #2
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Post and joist attachment


That will work fine. Done all the time, most of the force is straight down.
Just double bolt it with 1/2" carrage bolts.
I counter bore the area where the heads of the bolts are so I can cover the rim joist with composit fashia so it's a nice clean look.

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Old 02-09-2013, 10:50 AM   #3
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Post and joist attachment


I typically notch the 6x6 for a single ply then attach the outer ply to it. I'll then attach a wood cleat to the column under the outer ply. This satisfies the code requirements of beams, girders and joists bearing on 1-1/2" of wood. Once the ply is installed in the notch I use a metal strap tie that attaches to the column above and below the notch.
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