If capacity at a given radius reaches 80% of the crane's rated capacity, what must be done?

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Multiple Choice

If capacity at a given radius reaches 80% of the crane's rated capacity, what must be done?

Capacities on a crane are tied to the radius—the distance from the crane center to the load. As the radius increases, the chart shows you can lift less weight. If you find that your load is at about eighty percent of what the crane is rated to lift at that radius, the immediate step is to verify the radius. A small error in measuring the distance, or in the rigging geometry (where the load actually sits, the hook point, or how the load is suspended), can shift you to a different line on the chart with a lower capacity. Verifying the radius ensures the correct capacity is being used for the current setup and helps prevent an unintentional overload.

Once the radius is confirmed, you can decide whether to proceed within the safe margin, adjust the setup to a smaller radius to gain capacity, or stop if the measurement cannot be verified safely. The other options don’t address the potential measurement or geometry discrepancy that could put you over the safe limit.

If capacity at a given radius reaches 80% of the crane's rated capacity, what must be done?

Study for the Rigging Practices Test. Prepare with detailed quizzes and practice questions, with hints and explanations for each query. Equip yourself with vital rigging knowledge and ace your exam!

If capacity at a given radius reaches 80% of the crane's rated capacity, what must be done?

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