Question 472 Deck General

The correct answer is D) load radius. When a cargo boom or crane is rated at varying capacities, there will be a table at the controls that relates the safe working load to the load radius. This is because the capacity of a boom or crane is directly affected by the distance the load is lifted from the centerline of the equipment. As the load radius increases, the safe working load decreases due to the increased bending moment on the boom structure. The other options, cable strength, boom strength, and winch speed, do not directly determine the safe working load capacity in the same way that the load radius does.