If the sheet of plywood has a 32/16 panel identification index, what is the maximum span for use as roof decking?

The correct answer indicates that the maximum span for a sheet of plywood identified as 32/16 used for roof decking is 32 inches. This designation specifically refers to the strength and structural capabilities of the panel.

The first number in the panel identification, 32, refers to the maximum spacing of the supports (in inches) for single-axis loads (such as roof decking). This means that the plywood can effectively support roof loads when the joists or rafters underneath are spaced a maximum of 32 inches apart.

The second number, 16, indicates that the panel can also be used in applications where the supports are spaced 16 inches apart, which is common for floor applications. However, since the question specifically pertains to maximum span for roof decking, focusing on the first number is essential.

Understanding panel ratings and spans is crucial in construction, as it ensures safety and structural integrity. Using plywood beyond its rated span can increase the risk of structural failure. Therefore, the identification index serves as a guide for builders to make informed decisions regarding material usage based on the intended application and load requirements.