An toànCâu 1352 / 1605
Cutting the excavation walls at an angle inclined away from the excavation to prevent cave-in is called:
a.Shoring
b.Sloping
c.Trench boxing
d.Shielding
Giải thích
Sloping inclines the excavation walls away from the excavation at a safe angle based on soil type. Shoring supports walls with structural members; shielding protects with a box.
Trích dẫn luật: 29 CFR 1926.652Luyện miễn phí toàn bộ 1605 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- California law adds a special requirement for trenches or excavations 5 feet or more deep into which a person must descend: a detailed plan for worker protection must be prepared when the trench is:
- Certain high-hazard construction work — trenches 5 feet or deeper requiring shoring, and construction of structures more than three stories or 36 feet high — requires the contractor to obtain what from Cal/OSHA before starting?
- A protective system that uses a trench box or shield to protect workers is called:
- Job-made and manufactured ladders must be capable of supporting their intended loads. A ladder should be selected so its duty rating:
- When a break in elevation of 19 inches or more exists and no ramp/runway/stairway is present, the employer must provide:
- OSHA requires that persons who erect, dismantle, move, or inspect scaffolds be trained by a competent person to recognize hazards. This training must be:
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Người kiểm duyệt Abraham Chen — Licensed California General Contractor (CSLB License #1101856 — kiểm tra)