Crane Operator Certification Exam Prep · Question
A crane's counterweight is incorrectly installed, being lighter than specified in the load chart. How does this affect the crane's safe lifting capacity?
An incorrect or insufficient counterweight directly compromises the crane's backward stability, significantly reducing its safe lifting capacity and increasing
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Question: A crane's counterweight is incorrectly installed, being lighter than specified in the load chart. How does this affect the crane's safe lifting capacity?
Answer options:
- It increases the stability over the rear, enhancing capacity. ✅ It reduces the crane's stability, decreasing capacity across all radii.
- It primarily affects side-to-side stability, not lifting capacity.
- It only impacts the crane's ability to travel, not to lift.
Correct answer: It reduces the crane's stability, decreasing capacity across all radii.
Explanation: An incorrect or insufficient counterweight directly compromises the crane's backward stability, significantly reducing its safe lifting capacity and increasing the risk of forward tipping, especially at longer radii.
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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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