When decking is diagonal to the joist, what is the maximum allowable spacing for joists supporting that decking when using 2-inch thick wood?

When decking is installed diagonally to the supporting joists, it creates a different load distribution compared to when the decking runs parallel to the joists. The maximum allowable spacing for joists supporting 2-inch thick wood decking is typically determined based on the structural capacity of the decking material and the design standards that ensure safety and performance.

2-inch thick wood decking can support heavier loads due to its increased thickness and density, allowing for wider spacing of joists. The spacing of 16 inches on center is a common standard in the building industry that provides adequate support while ensuring that the decking does not sag or deflect excessively under load. This spacing also accommodates typical building practices, making it easier to align with standard framing practices.

Additionally, this maximum spacing is aligned with load-bearing calculations that take into account the diagonal installation, which requires sufficient support to handle both vertical loads and lateral forces. Configuring the joists at this spacing allows for an optimal balance between structural integrity, safety, and material efficiency in construction.