If the sheet of plywood has a 32/16 panel identification index, what is the maximum span it may be used as floor decking?

The identification index of 32/16 on a sheet of plywood indicates that it is rated for use in flooring and that it has specific load-bearing capabilities. The first number, 32, refers to the maximum span in inches that can be used when the plywood is laid across supports spaced 32 inches apart. The second number, 16, indicates the maximum span for support spacing when the panels are laid across supports spaced 16 inches apart.

In this case, when plywood with a 32/16 rating is used as floor decking, it is designed to accommodate a maximum span with joist spacing of 16 inches. This means it can effectively support the load and provide the necessary structural integrity over that distance, making 16 inches the correct maximum span for this application.

Understanding these panel ratings is crucial for ensuring the structural soundness and performance of flooring systems in residential construction. Proper use of materials according to their ratings helps to avoid structural failures, ensuring safety and durability in building projects.