KinAlberta
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# Posted: 3 Jul 2018 03:41pm - Edited by: KinAlberta
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Could this spread the load, add more bolts and reduce risk of shear: add more 2x12s on the insides of all the posts, then bolt through both so that all the posts are sandwiched between 2x12s. Then fill the remaining 1â€-3†gap between the concrete and the bottom of the new 2x12s with mortar or cement held in place with a metal mesh or wrap.
Everywhere inside the rim joist there would be a gap between the top of the inner 2x12s and the 2x8s that could easily be filled.
I would guess that adding a lamination over the two stacked 2x12 perimeters boards would result in a beam strength somewhat closer but under that of a 2x22†or more beam.
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