What is the maximum span for wood structural panel subfloor sheathing with a thickness of 3/4"?

The maximum span for 3/4-inch wood structural panel subfloor sheathing is determined according to building codes and design standards that account for factors such as load distribution, material properties, and intended use. A span of 48 inches aligns with these standards for this thickness of material, allowing sufficient stiffness and load-bearing capacity for typical residential applications.

This means that the panels can effectively support the expected loads without excessive deflection or failure, ensuring the structural integrity of the flooring system. Utilizing a span greater than this could lead to issues such as bounce or sagging in the floor, which would compromise both safety and comfort.

Other span options are less suitable because they do not take full advantage of the capacity and strength that a 3/4-inch thickness provides, resulting in a system that might require more frequent supports, leading to increased labor and costs in construction. Therefore, the 48-inch maximum span is recognized as optimal for structural performance in standard building practices.