Ten-foot scaffold planks should not extend over the edge of the support by more than how many inches?

Ten-foot scaffold planks should not extend over the edge of the support by more than how many inches?

• A. 12 inches
• B. 16 inches
• C. 18 inches
• D. 10 inches

Answer: (A)

The main idea is that scaffold planks must be supported along their length and not extend too far past the edge. Limiting how far a plank overhangs keeps it stable under load and reduces the risk of it slipping or bending excessively at the end. For a ten-foot scaffold plank, the maximum allowed overhang is twelve inches. Extending beyond that increases bending on the plank, shifts more weight toward the edge, and raises the risk of a fall or plank failure. So, twelve inches is the standard safety limit. Always follow site-specific rules and inspect planks before use.

The main idea is that scaffold planks must be supported along their length and not extend too far past the edge. Limiting how far a plank overhangs keeps it stable under load and reduces the risk of it slipping or bending excessively at the end. For a ten-foot scaffold plank, the maximum allowed overhang is twelve inches. Extending beyond that increases bending on the plank, shifts more weight toward the edge, and raises the risk of a fall or plank failure. So, twelve inches is the standard safety limit. Always follow site-specific rules and inspect planks before use.