Excavator Operator Certification Exam Prep · Question
A trench, 2.5 metres deep, is being excavated in soil classified as Type 3 (loose sand with minimal cohesion). According to Ontario 규제 213/91, what is the maximum allowable slope angle from the horizontal for this trench?
Ontario Regulation 213/91, Section 234(3) specifies that for Type 3 soil, the maximum slope of the face of an excavation must not exceed 1 vertical to 2 horizon
Start free practice for Excavator Operator Certification Exam Prep
263 questions · no signup required · 40 free questions per day
Question: A trench, 2.5 metres deep, is being excavated in soil classified as Type 3 (loose sand with minimal cohesion). According to Ontario 규제 213/91, what is the maximum allowable slope angle from the horizontal for this trench?
Answer options:
- 1 vertical to 1 horizontal (45 degrees)
- 1 vertical to 1.5 horizontal (approx. 33.7 degrees) ✅ 1 vertical to 2 horizontal (26.6 degrees)
- 1 vertical to 3 horizontal (18.4 degrees)
Correct answer: 1 vertical to 2 horizontal (26.6 degrees)
Explanation: Ontario Regulation 213/91, Section 234(3) specifies that for Type 3 soil, the maximum slope of the face of an excavation must not exceed 1 vertical to 2 horizontal, unless otherwise engineered. This ensures worker safety against cave-ins.
Start free practice for Excavator Operator Certification Exam Prep
263 questions · no signup required · 40 free questions per day
More about Excavator Operator Certification Exam Prep
Related Questions
- 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?
- According to IUOE best practices, what is the LAST thing an operator should do before leaving the excavator's
- Travel on slope — bucket should be:
More for Excavator Operator Certification Exam Prep candidates
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?
Ready to practice?
Free, no signup required. Build a wrong-question list as you go.
Start Free Excavator Operator Certification Exam Prep Practice →Related courses
Other Canadian certifications candidates often prepare for alongside this one.