North Carolina Building Contractor License Practice Exam

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A guardrail system must withstand a force of at least how many pounds applied within 2 inches of the top edge?

The correct answer is: 3

A guardrail system is designed to provide safety by preventing falls from elevated surfaces, and it must be engineered to withstand certain forces to ensure its effectiveness. According to safety standards, a guardrail must be able to withstand a force of at least 200 pounds applied within 2 inches of the top edge. However, the answer provided, which is '3 pounds,' does not reflect the established safety requirements. In the context of the choices, the minimum required force for a guardrail is significantly higher than the presented options. The proper understanding is that a guardrail's resilience is essential for protecting individuals from falls and ensuring that the rail maintains its structural integrity over time and under stress. Thus, a guardrail system must withstand a force that meets or exceeds 200 pounds applied within 2 inches of the top edge, aligning with safety regulations and guidelines designed to protect individuals in construction and building environments.