What are the three main superimposed loads to be aware of when operating a hoisting machine?

The correct answer identifies three superimposed loads that are crucial when operating a hoisting machine: the weight of the spoil pile, the weight of the machine itself, and any traffic adjacent to the work area.

Understanding the weight of the spoil pile is essential as it represents the additional load that can affect the stability of the hoisting equipment, especially if it is improperly managed. The weight of the machine is a fundamental consideration since the machine's own mass contributes to its overall stability and operational limits. Finally, acknowledging the presence of traffic adjacent to the work area is vital for safety; external forces and vibrations can impact the operational integrity of the hoisting system.

In essence, these three factors collectively inform the operator about the operational limits and necessary precautions when using a hoisting machine, ensuring safe and effective lifting operations.