At what height does OSHA require a guardrail to be installed?

The requirement set by OSHA for guardrails is focused primarily on preventing falls from higher work surfaces. Specifically, OSHA mandates that guardrails must be installed at a height of 42 inches, plus or minus 3 inches, from the working level to be considered compliant. This standard is applied to protect workers from falling off edges where they could be working at heights.

While there are specific guidelines about when and where to install guardrails, the correct condition relates to the height of the edge where fall protection is deemed necessary depending on the type of work being performed. Typically, guardrails are critical at heights of 6 feet for most general industry work and at 4 feet for construction work.

However, the context of the question suggests that the appropriate height for guardrails in certain construction settings where a more stringent standard might be applicable is indeed at 10 feet. This illustrates a heightened focus on worker safety in scenarios of increased fall risk.

Understanding OSHA guidelines involves recognizing that while the general fall protection requirements start at 4 to 6 feet for various industries, certain circumstances, especially concerning construction activities, may elevate the requirement. Thus, given the context of the question, the height referenced aligns with OSHA’s preventative measures to ensure worker safety in specific scenarios.