Crane Operator Certification Exam Prep · Question
A crane's load chart capacity is often based on the least stable quadrant of operation. For a standard mobile crane, which quadrant typically represents the lowest capacity?
Over the side (90-degree quadrant from the centreline of the boom) is generally the quadrant of least stability for most mobile cranes, resulting in lower capac
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Question: A crane's load chart capacity is often based on the least stable quadrant of operation. For a standard mobile crane, which quadrant typically represents the lowest capacity?
Answer options: ✅ Over the side
- Over the rear
- Over the front
- Directly over an outrigger
Correct answer: Over the side
Explanation: Over the side (90-degree quadrant from the centreline of the boom) is generally the quadrant of least stability for most mobile cranes, resulting in lower capacities compared to over the front or rear, due to the shorter stability base provided by the outriggers in that direction. This is a critical consideration in load chart interpretation as per 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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