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2

Are you trying to solve a specific problem with the structure? If so, you might indeed want to engage an engineer. If you are simply trying to add a little rigidity to your building, plywood is a good choice. It will work in either orientation, but horizontal brick pattern is most typical. Consider tying the ends (and sides) together with sheathing ...


5

the wall is 13x8 and the boards are 4x8, the simplest way is to put the 8 dimesnion of the boards on the 8 dimension of the wall. As the boards need to be nailed all round the perimeter, if you lay the boards horizontally you'll need to add blocking to catch the edges of the boards. If you stand them vertically you'll need a stud where the edges of the ...


3

Assuming your Plywood is Grade 1 (Birch/Pine), at 19/32 you can run the joists at 20in perpendicular (floor) or 24in parallel (roof) for 50psf, so at 16 o.c. you're well within both limits. I am mixing roof and floor rating, but comparing at 50psf total, since there is no floor rating for parallel installations. This matters for how the load is distributed ...


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