Excavator Operator Certification Exam Prep · Question
Why is it important to have ladders or other means of egress readily available in a trench?
Canadian regulations, such as WorkSafeBC G20.100 and Ontario Reg 213/91 (s. 242), require readily accessible ladders, ramps, or stairs in trenches deeper than 1
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Question: Why is it important to have ladders or other means of egress readily available in a trench?
Answer options: ✅ To allow workers to escape quickly in an emergency, such as a cave-in.
- To provide a place to store tools and equipment.
- To help in precisely measuring the trench depth.
- To easily access buried utility lines.
Correct answer: To allow workers to escape quickly in an emergency, such as a cave-in.
Explanation: Canadian regulations, such as WorkSafeBC G20.100 and Ontario Reg 213/91 (s. 242), require readily accessible ladders, ramps, or stairs in trenches deeper than 1.2 metres (4 feet) for emergency escape, and they must be no more than 7.5 metres (25 feet) of lateral travel for workers.
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Question explanations
- During a final inspection of an excavator, prior to beginning work, an operator notices significant play in th
- An excavator operator is preparing to dig a trench in cohesive soil. To achieve maximum breakout force, what a
- Which control typically governs the arm (or dipper arm) movement for an excavator?
- What condition might require sloping or shoring of a trench less than 1.2 meters (4 feet) deep?
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