Crane Operator Certification Exam Prep · Question
What is the primary purpose of using blocking and cribbing beneath crane outrigger pads?
Blocking and cribbing are used to spread the load from the outrigger pads over a greater area of the ground, thereby reducing the ground bearing pressure and pr
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Question: What is the primary purpose of using blocking and cribbing beneath crane outrigger pads?
Answer options:
- To increase the height of the crane for better visibility
- To provide a decorative finish to the setup ✅ To distribute the crane's weight over a larger area, reducing ground bearing pressure
- To prevent the outriggers from sliding on wet surfaces
Correct answer: To distribute the crane's weight over a larger area, reducing ground bearing pressure
Explanation: Blocking and cribbing are used to spread the load from the outrigger pads over a greater area of the ground, thereby reducing the ground bearing pressure and preventing the outriggers from sinking into soft ground, as required by CSA Z150.
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Question explanations
- According to most Canadian provincial regulations, who is ultimately responsible for the safe operation of a c
- A crane's rated capacity decreases as the load radius:
- What is the minimum number of full wraps of wire rope that must remain on a hoist drum when the hook is in its
- Before setting up a mobile crane, what is the most important factor to assess regarding ground conditions?
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