Excavator Operator Certification Exam Prep · Question
What is the critical minimum distance a spoil pile containing excavated material must be kept from the edge of an excavation, according to general OHS best practices in Canada, to prevent a surcharge collapse?
Across Canada, OHS regulations (e.g., Ontario O. Reg. 213/91 Section 232(3)) mandate that excavated material, including spoil piles, must be kept at least 0.6 m
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Question: What is the critical minimum distance a spoil pile containing excavated material must be kept from the edge of an excavation, according to general OHS best practices in Canada, to prevent a surcharge collapse?
Answer options:
- 0.3 metres (1 foot) ✅ 0.6 metres (2 feet)
- 0.9 metres (3 feet)
- 1.2 metres (4 feet)
Correct answer: 0.6 metres (2 feet)
Explanation: Across Canada, OHS regulations (e.g., Ontario O. Reg. 213/91 Section 232(3)) mandate that excavated material, including spoil piles, must be kept at least 0.6 metres (2 feet) from the edge of the excavation to mitigate the risk of surcharge and material falling in.
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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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