What is the primary purpose of a crane load chart?

• A. Crew roster schedules
• B. To indicate fuel levels and scheduled servicing.
• C. To show the maximum safe lifting capacity for a given configuration (boom length, radius, hoist position) so you do not overload the crane.
• D. To list operator qualifications required for use.

Answer: (C)

The main idea is to know how much weight the crane can safely lift in the exact setup you’re using. A crane load chart shows the maximum safe lifting capacity for different configurations, which depend on factors like boom length, the radius (how far the load is from the crane), and the hoist position. By checking the chart before a lift, you confirm that the planned load and rigging are within the crane’s safe limits for that moment, preventing overload and potential tipping or structural stress. The chart also reflects how capacity changes with longer booms or larger radii—often capacity decreases as the lever arm increases.

Other items like crew rosters, fuel levels or servicing schedules, and operator qualifications are important for overall operations and safety, but they are not what the load chart communicates.