Crane Operator Certification Exam Prep · Question
What is the significance of the 'cribbing' or 'matting' used under outriggers?
Cribbing or matting increases the surface area over which the outrigger forces are distributed, reducing ground pressure and preventing the outriggers from sink
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Question: What is the significance of the 'cribbing' or 'matting' used under outriggers?
Answer options:
- To provide a non-slip surface for the crane's tires ✅ To prevent sinking and distribute the load over a larger area
- To reduce vibration during lifting
- To protect the outrigger pads from wear
Correct answer: To prevent sinking and distribute the load over a larger area
Explanation: Cribbing or matting increases the surface area over which the outrigger forces are distributed, reducing ground pressure and preventing the outriggers from sinking into soft ground.
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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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