Excavator Operator Certification Exam Prep · Question
What is the primary factor that distinguishes Type 2 soil from Type 3 soil under Canadian OHS regulations for excavation classification?
The primary distinction between soil types (e.g., Type 2 'compacted' vs. Type 3 'granular non-cohesive') lies in their unconfined compressive strength and cohes
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Question: What is the primary factor that distinguishes Type 2 soil from Type 3 soil under Canadian OHS regulations for excavation classification?
Answer options:
- The presence of groundwater.
- The size of the aggregate particles. ✅ The soil's unconfined compressive strength and cohesion.
- The colour and organic content of the soil.
Correct answer: The soil's unconfined compressive strength and cohesion.
Explanation: The primary distinction between soil types (e.g., Type 2 'compacted' vs. Type 3 'granular non-cohesive') lies in their unconfined compressive strength and cohesive properties, which dictate their stability and resistance to collapse.
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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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