What percentage of rated capacity indicates a "Critical Lift" when using multiple cranes?

A "Critical Lift" is defined as a lift that exceeds a certain threshold of the crane's rated capacity, indicating that it requires special planning and safety measures due to the increased risk involved. The percentage that typically indicates a Critical Lift when using multiple cranes is 75% of the rated capacity. This threshold is set to ensure that the cranes are operating within safe limits and that there are adequate safety protocols in place to handle the increased load and complexity of the lift.

When engaging in a Critical Lift, operators must conduct a detailed lift plan, which includes considerations such as load weight distribution, crane configuration, and the capabilities of the cranes involved. By adhering to the 75% threshold, it promotes an emphasis on safety and preparedness, minimizing potential hazards while ensuring the successful completion of the lift.

Other percentages are generally considered safe for regular operations without the need for additional critical lift planning, thus highlighting the significance of the 75% mark in the context of safety management in crane operations.