Excavator Operator Certification Exam Prep · Question
An excavator operator is performing trenching operations for a new waterline installation in cohesive soil. The trench depth is planned for 2.5 metres, and there are no existing shoring systems or trench boxes available. According to provincial safety regulations, what is the maximum allowable vertical side cut for this trench without requiring additional protective measures?
Provincial occupational health and safety regulations in Canada typically limit un-shoared or un-protected excavation walls in cohesive soil to 1.2 metres (4 fe
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Question: An excavator operator is performing trenching operations for a new waterline installation in cohesive soil. The trench depth is planned for 2.5 metres, and there are no existing shoring systems or trench boxes available. According to provincial safety regulations, what is the maximum allowable vertical side cut for this trench without requiring additional protective measures?
Answer options:
- 0.6 metres ✅ 1.2 metres
- 1.5 metres
- 2.0 metres
Correct answer: 1.2 metres
Explanation: Provincial occupational health and safety regulations in Canada typically limit un-shoared or un-protected excavation walls in cohesive soil to 1.2 metres (4 feet) in depth. Beyond this depth, protective measures like shoring, sloping, or trench boxes are mandatory. Therefore, 1.2 metres is the maximum allowable vertical cut.
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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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