An toànCâu 1273 / 1605
When a portable ladder is used to access an upper landing surface, the side rails must extend at least how far above the landing?
a.5 feet
b.6 inches
c.3 feet
d.1 foot
Giải thích
1926.1053(b)(1) requires the ladder side rails to extend at least 3 feet above the upper landing surface, or be otherwise secured/gripped so the user can maintain a firm handhold.
Trích dẫn luật: 29 CFR 1926.1053(b)(1)Luyện miễn phí toàn bộ 1605 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Scaffold platforms must be fully planked or decked, and generally the gap between planks or between the platform and uprights must not exceed:
- When a scaffold platform is more than 2 feet above or below a point of access, what must be provided?
- Supported scaffold poles, legs, or uprights must be plumb and braced, and generally must rest on:
- For a non-self-supporting (leaning) portable ladder, what is the proper setup angle?
- While climbing or working on a ladder, an employee must:
- The top step or top cap of a stepladder should be used how?
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