How does the actual weight of the rigging impact the crane's net lifting capacity as derived from the load chart?

The actual weight of the rigging reduces the crane's net lifting capacity as derived from the load chart because the rigging weight is part of the total load the crane is lifting. The load chart provides the crane's maximum allowable lifting capacity at specific boom lengths and radii, which includes the weight of everything suspended from the hook, including the load itself and all rigging components such as slings, shackles, and hooks. Therefore, the weight of the rigging must be subtracted from the load chart capacity to determine the maximum weight of the load that can be safely lifted. Failing to account for rigging weight can lead to overloading the crane, potentially causing structural failure or tipping. For example, if the load chart indicates a maximum capacity of 20,000 lbs at a given radius and the rigging weighs 1,000 lbs, the maximum weight of the load that can be lifted is 19,000 lbs.