will cedar 4x4s support ply

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  #1  
Old 11-10-04, 09:24 PM
lvdpb
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will cedar 4x4s support ply

3/4" plywood = 5' x 2.5' area
cedar posts = 4" x 4" (will be appx. 6' long from floor to bottom of plywood)

4" x 4" cedar posts from floor up to bottom of plywood.

Will they support the plywood enough for 40 psi?
30 psi?

I want to put a small loft structure in a little alcove? More of a shelf. Then put a mattress up there to create a loft area. Nothing fancy, just sleeping area.

It seems to me these posts should support this ply, but I cannot figure it out using the charts for rafters and joists.

Any help would be greatly appreciated.
 
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Old 11-12-04, 06:32 AM
awesomedell's Avatar
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Hello & welcome to the forums.

An area of that size 5'x2.5', would require some stringers under the plywood to properly and safely support the area for the intended use. 2"x4" set on 16" centers is what I would use.
 
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