Excavator Operator Certification Exam Prep · Question
When working around existing underground utilities, what is the recommended digging method once the utility has been located and marked?
Once a utility is located, OHS regulations and best practices require manual excavation within a specified tolerance zone (usually 0.5m or 1.5ft on either side
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Question: When working around existing underground utilities, what is the recommended digging method once the utility has been located and marked?
Answer options:
- Continue with mechanical excavation as usual, but more carefully. ✅ Hand dig (manual excavation) within the designated 'tolerance zone'.
- Switch to a larger bucket to clear the area faster.
- Dig deeper initially to avoid the utility, then come up to grade.
Correct answer: Hand dig (manual excavation) within the designated 'tolerance zone'.
Explanation: Once a utility is located, OHS regulations and best practices require manual excavation within a specified tolerance zone (usually 0.5m or 1.5ft on either side of the mark) to physically expose and confirm its location and depth, preventing accidental strikes.
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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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