Excavator Operator Certification Exam Prep · Question
What is the primary purpose of a 'keyway' trench excavated at the base of an embankment or berm?
A keyway is a trench dug into stable ground at the base of a new fill embankment. It provides a secure anchor point, preventing the fill material from sliding o
Start free practice for Excavator Operator Certification Exam Prep
263 questions · no signup required · 40 free questions per day
Question: What is the primary purpose of a 'keyway' trench excavated at the base of an embankment or berm?
Answer options:
- To create a drainage channel to divert surface water away from the structure. ✅ To anchor the base of the embankment and prevent sliding or erosion.
- To provide a stable pathway for construction vehicles during material placement.
- To serve as a storage area for excess excavated material.
Correct answer: To anchor the base of the embankment and prevent sliding or erosion.
Explanation: A keyway is a trench dug into stable ground at the base of a new fill embankment. It provides a secure anchor point, preventing the fill material from sliding outwards, especially on sloped terrain.
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.