Excavator Operator Certification Exam Prep · Question
What condition might require sloping or shoring of a trench less than 1.2 meters (4 feet) deep?
While OHS regulations often specify a 1.2m (4ft) threshold for protective systems, unstable ground conditions (e.g., loose soil, previously excavated soil, satu
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Question: What condition might require sloping or shoring of a trench less than 1.2 meters (4 feet) deep?
Answer options:
- If the trench is in stable rock.
- If the trench is open for less than one working day. ✅ If the trench is in unstable or previously disturbed soil.
- If workers are not required to enter the trench.
Correct answer: If the trench is in unstable or previously disturbed soil.
Explanation: While OHS regulations often specify a 1.2m (4ft) threshold for protective systems, unstable ground conditions (e.g., loose soil, previously excavated soil, saturated soil) can necessitate shoring or sloping even in shallower trenches to protect 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?
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