At what depth does an excavation generally require a protective system such as sloping, shoring, or shielding to protect workers from cave-ins?
a.3 feet or more
b.5 feet or more
c.2 feet or more
d.10 feet or more
解析
1926.652 and T8 §1541.1 require cave-in protection for excavations 5 feet deep or more, unless made entirely in stable rock. A protective system may also be required shallower if a competent person sees potential for cave-in.
法律依据: 29 CFR 1926.652(a) / T8 CCR §1541.1免费刷完整 1632 道题库 — 无需注册。
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同考点相关题目
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- The top edge of a standard guardrail top rail must be approximately what height above the walking/working surface?
- Who must inspect an excavation for hazardous conditions before employees enter and as conditions change?
- For an excavation deeper than 20 feet, protective systems (such as shoring or shielding) must be:
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审核人 Abraham Chen — Licensed California General Contractor (CSLB License #1101856 — 核实)