North Carolina Building Contractor License Practice Exam

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What is the maximum height for a guardrail?

30 inches
36 inches
42 inches
48 inches

The correct answer is: 42 inches

The maximum height for a guardrail is established to ensure safety on elevated surfaces and prevent falls. A guardrail at 42 inches is designed to provide adequate protection while allowing for easy visibility and access. This height is consistent with safety codes and regulations in many areas, as it balances both safety and functionality. Guardrails serve a critical purpose in various construction settings, especially on stairs, balconies, and other elevated platforms. A height of 42 inches has been determined by safety standards as sufficient to help prevent accidental falls while accommodating most users, including children and adults. While other heights may have relevant contexts or usages, they do not align with the standard established for guardrails in general construction applications. The regulations ensure that guardrails are high enough to minimize the risk of injury while not being so high as to create visibility issues for users or obstruct the area.