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I am trying to find out how much weight (PSI) - load bearing

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that a 4'x4'x1/2" piece of...
I am trying to find out how much weight (PSI) - load bearing that a 4'x4'x1/2" piece of plywood would hold. We use 4"x4" sheets of 3/4" normally to cover excavated holes up to 3' diameter. Someone suggested 1/2" but I don't think it will hold the OSHA required 400 lbs or 2x the weight of an individual, whichever is greater. Can you help?
JA: OK. Is there anything else the Structural Engineer should be aware of?
Customer: i don't think so
Submitted: 1 month ago.Category: Structural Engineering
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11/13/2017
Structural Engineer: StructuralEng, Consultant replied 1 month ago
StructuralEng
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Structural Engineer: StructuralEng, Consultant replied 1 month ago

You need to know the maximum allowable point load for a piece of plywood covering a 3' diameter circle?

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Structural Engineer: StructuralEng, Consultant replied 25 days ago

Approximately 200# ***** ***** maximum allowable point load for that scenario for a structural I rated plywood

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