SafetyCâu 645 / 700
On a guardrail system protecting an edge where tools could fall onto workers below, a toeboard is added. About what MINIMUM height must the toeboard rise above the walking surface?
a.1 inch
b.3.5 inches (approximately 4 inches)
c.9 inches
d.12 inches
Giải thích
Correct: a toeboard must be at least about 3.5 to 4 inches high above the walking/working surface to keep tools and debris from being kicked off the edge. 1 inch is too short to retain material. 9 and 12 inches exceed what is required and are not the standard minimum; a midrail (not a toeboard) sits near mid-height around 21 inches.
Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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