SafetyCâu 512 / 700
A standard guardrail system used for fall protection must have a top rail at approximately what height above the walking surface?
a.About 24 inches
b.About 30 inches
c.About 36 inches
d.About 42 inches
Giải thích
Cal/OSHA specifies a guardrail top rail at approximately 42 inches (within a few inches tolerance) above the walking or working surface, with a midrail near half that height, and the system must resist a specified outward and downward force. Option d is correct. Lower rails (a, b, c) do not meet the standard and would let a worker pitch over the top.
Trích dẫn luật: Cal/OSHA Title 8, Construction Safety OrdersLuyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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