What must be determined to keep a load under control while rigging?

To keep a load under control while rigging, understanding the load center of gravity is essential. The center of gravity is the point at which the weight of the load is evenly distributed in all directions. Knowing this allows the rigging crew to determine how the load will balance and react when lifted. If the load is lifted from a point that is not aligned with its center of gravity, it can tip, swing, or even become uncontrollable, posing safety risks and potentially causing damage.

By focusing on the center of gravity, riggers can ensure that the load is lifted in a safe and predictable manner. This is vital during the setup and execution of any lifting operation, as improper handling can lead to accidents and injuries. While weight distribution, rigging material, and safety factors are all important aspects of rigging, they stem from an understanding of the load's center of gravity to achieve proper control and safety during the lifting process.