What are the consequences of exceeding crane rated capacity during a lift?

• A. The crane will automatically adjust weight.
• B. Only minor equipment wear occurs.
• C. The load will settle safely.
• D. Increased risk of tipping, structural failure, rigging failure, uncontrolled load movement, and potential injury or damage; halt the lift immediately and reassess.

Answer: (D)

Exceeding the crane’s rated capacity creates an overload condition the equipment and rigging aren’t built to handle. The rated capacity is set for a specific configuration (radius, boom length/angle, counterweight, outrigger setup, and safety factors); pushing beyond that limit increases forces in the structure and lines far beyond what components can safely sustain. The most immediate and serious consequences are a higher risk of tipping, because the load shifts the center of gravity outside the base of support, and potential structural failure of the boom, mast, or supporting members due to overstress. Rigging components—slings, hooks, shackles—can fail under excessive tension, letting the load drop or move unpredictably. Uncontrolled load movement becomes more likely, endangering people and equipment nearby and causing damage. Because these outcomes can occur rapidly and be catastrophic, you must halt the lift immediately and reassess the plan, reducing or redistributing the load to meet the rated capacity and rechecking the crane setup and conditions before proceeding.