安全第 1265 / 1605 题
For a simple sloping system in Type C soil (and no engineering), the maximum allowable slope is approximately:
a.1/4 horizontal to 1 vertical
b.Vertical (90 degrees)
c.2 vertical to 1 horizontal
d.1.5 horizontal to 1 vertical (about 34 degrees)
解析
Type C soil requires the flattest slope: 1.5H:1V (about 34 degrees). Type B is 1H:1V (45 degrees) and Type A is 3/4H:1V (about 53 degrees) under the simple slope option.
法律依据: 29 CFR 1926.652 Appendix B免费刷完整 1605 道题库 — 无需注册。
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