Fall Protection第 45 / 100 题
What is the required top rail height for a standard guardrail system?
a.12 inches
b.60 inches
c.20 inches
d.Approximately 42 inches, plus or minus 3 inches
解析
A standard guardrail top rail must be about 42 inches high, plus or minus 3 inches, above the walking or working surface. A midrail is installed roughly halfway between the top rail and the surface. Guardrails must withstand at least 200 pounds of force applied outward or downward.
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