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
Giải thích
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.
Trích dẫn luật: 29 CFR 1926.652(a) / T8 CCR §1541.1Luyện miễn phí toàn bộ 1632 câu hỏi — không cần đăng ký.
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Câu hỏi liên quan cùng chủ đề
- For residential construction where conventional fall protection is infeasible or creates a greater hazard, what does OSHA require of the employer at heights of 6 feet or more?
- A guardrail system used for fall protection must have a top rail capable of withstanding a downward/outward force of at least how much, applied within 2 inches of the top edge?
- 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:
- A trench is 5 feet deep. What means of egress must be provided for workers?
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Người kiểm duyệt Abraham Chen — Licensed California General Contractor (CSLB License #1101856 — kiểm tra)