Oriented strand board is structurally engineered to be plenty strong enough to walk on, provided it is installed at the correct thickness and supported by framing joists spaced according to local building code requirements. Standard 23/32-inch tongue-and-groove OSB panels are routinely used as structural subflooring in residential and commercial construction, easily supporting heavy foot traffic, furniture, and major appliances without flexing excessively. The multi-layer cross-oriented manufacturing process gives OSB high stiffness and excellent shear strength, ensuring it performs reliably as a weight-bearing floor deck during and after construction.
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