10 feet long planks used on scaffolding should not extend over the edges of the support more than:

10 feet long planks used on scaffolding should not extend over the edges of the support more than:

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

Answer: (B)

Plank overhang must be limited to keep the edge of the plank securely supported and prevent tipping or slipping. For a 10-foot plank on scaffolding, the maximum extension past the end of the support is twelve inches. This keeps most of the plank supported by the framework while still providing a usable working surface. Extensions longer than twelve inches (such as sixteen or eighteen inches) increase the risk of the plank lifting, slipping, or failing, while a shorter overhang (like ten inches) complies with the rule but doesn’t address the maximum limit.

Plank overhang must be limited to keep the edge of the plank securely supported and prevent tipping or slipping. For a 10-foot plank on scaffolding, the maximum extension past the end of the support is twelve inches. This keeps most of the plank supported by the framework while still providing a usable working surface. Extensions longer than twelve inches (such as sixteen or eighteen inches) increase the risk of the plank lifting, slipping, or failing, while a shorter overhang (like ten inches) complies with the rule but doesn’t address the maximum limit.