Heavy Equipment Operator Certification Exam Prep · Question
What is the primary risk associated with operating a backhoe in a trench without proper shoring or sloping, especially in unstable soil?
The primary risk of working in an unshored or improperly sloped trench, especially in unstable soil, is a trench collapse, which can bury and seriously injure o
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Question: What is the primary risk associated with operating a backhoe in a trench without proper shoring or sloping, especially in unstable soil?
Answer options:
- Reduced digging efficiency due to soil resistance.
- Increased wear and tear on the backhoe's hydraulic system. ✅ Trench collapse, posing a severe risk of injury or fatality to workers in the trench.
- Difficulty in maintaining a consistent trench depth.
Correct answer: Trench collapse, posing a severe risk of injury or fatality to workers in the trench.
Explanation: The primary risk of working in an unshored or improperly sloped trench, especially in unstable soil, is a trench collapse, which can bury and seriously injure or kill workers, violating regulations like AB OHS Code Part 32, Section 445.
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