What can be determined from a range diagram using boom length and angle?

A range diagram is a valuable tool in crane operations, as it visually represents the relationship between the boom length, angle, and load radius. When utilizing a range diagram, the boom length and angle are critical in determining the load radius, which is the horizontal distance from the center of the crane's rotation to the center of the load being lifted.

As the boom's angle changes, or when you extend or retract the boom, the load radius will also change, influencing the crane's lifting capacity. This relationship is essential for safe operation, as the crane's ability to lift a particular load diminishes as the load radius increases. Therefore, by using a range diagram effectively, operators can visualize and ascertain the load radius necessary for the specific lifting task at hand, ensuring that it is within the crane's operational limits for safety and efficiency.

The other choices pertain to different aspects of crane operation but do not directly relate to what can be determined from the range diagram in the context of boom length and angle. Weight limit, height restriction, and distance calculation involve different parameters and considerations that are not specifically derived from the combination of boom length and angle on a range diagram.