What is the horizontal distance from the pivot point of a crane to a point below the hoist hook?

The horizontal distance from the pivot point of a crane to a point located directly below the hoist hook is referred to as the load radius. This measurement is crucial in rigging and hoisting operations because it directly impacts the crane's lifting capability and stability. As the load radius increases, the crane's capacity to lift decreases due to the additional distance from the central pivot point, which can lead to increased leverage on the crane's structure.

Understanding the load radius is essential for ensuring that the crane operates within its rated load capacity, allowing for safe and efficient lifting practices. This measurement helps operators determine whether a given load can be lifted safely without exceeding the crane’s limits, thereby minimizing the risk of accidents and equipment failure.

While concepts such as working radius may seem similar, the working radius usually refers to the area within which the crane can operate effectively rather than the specific horizontal distance from the pivot to the hook. Thus, the precision of the term "load radius" is what makes it the correct answer in this context.