Heavy Equipment Operator Certification Exam Prep · Question
Which type of soil typically requires the most aggressive shoring or sloping for a trench to prevent collapse?
Type C soil, characterized by granular, silty, or previously disturbed soil, is the least stable and most prone to collapse. It requires the steepest slopes or
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Question: Which type of soil typically requires the most aggressive shoring or sloping for a trench to prevent collapse?
Answer options: ✅ A. Type C (e.g., granular, silty sand)
- B. Type A (e.g., hard cohesive clay)
- C. Type B (e.g., cohesive soil, previously disturbed soil)
- D. Solid rock
Correct answer: A. Type C (e.g., granular, silty sand)
Explanation: Type C soil, characterized by granular, silty, or previously disturbed soil, is the least stable and most prone to collapse. It requires the steepest slopes or most robust shoring systems to ensure worker safety, as outlined in occupational health and safety regulations.
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