The load/span tables shown in this Guide are derived from large scale tests using full panels to simulate actual service conditions (at a reference temperature of 77° F). These tests include two span vacuum box test and three point load tests.

Each span shown in the load/span tables represents the most conservative span derived when the panel is assessed using the following parameters:

Design Parameters

• Critical bending moment at actual panel failure;
• Flexural stiffness factor, EI, (where E is the flexural
  modulus of elasticity and I is the moment of inertia of
  the panel section); and
• Pullover force resistance per fastener.