When lifting a load with a stowed jib, what is the jib deduction based on?

When lifting a load with a stowed jib, the jib deduction is based on the effective weight of the load being lifted. This concept is crucial because the effective weight takes into account not just the actual weight of the load, but also factors like the center of gravity and the presence of any rigging that can affect how the load behaves during the lift.

By using the effective weight for jib deduction, operators can ensure that they are calculating the crane's capacity more accurately and managing its stability properly, thereby reducing the risk of accidents or equipment failure. This approach allows for safer and more efficient lifting operations, as it reflects the real impact the load has on the crane's overall structure during a lift.

In contrast, considerations like the weight of the crane itself, load distribution, or the height of the load do not provide the necessary understanding of how the stowed jib influences the crane's lifting capacity. These factors may affect the lift in other ways but do not directly inform the specific calculations needed for jib deduction.