Before lifting, why is identifying the load's center of gravity important in rigging?

• A. To determine the color of the slings.
• B. To ensure rigging gear selection and sling angles keep the load stable.
• C. To speed up the lift.
• D. To minimize the number of workers.

Answer: (D)

Identifying the load’s center of gravity is essential to keep the lift stable. The center of gravity is the point where the entire weight of the load acts, and knowing where it sits tells you where the load will balance. With that information, you can choose rigging gear and plan sling angles so all parts of the load share the load evenly and the forces from the slings pull toward a common point that keeps the load level.

If the rigging points aren’t arranged with the CG in mind, the load can tilt, swing, or rotate as it’s lifted. That creates side loading on slings, uneven tension, and greater risk of a shift that could cause damage or an accident. By aligning the rigging so the forces converge near the CG, you maintain control, minimize horizontal forces, and keep the lift within the crane’s capacity as sling angles change during the lift.

The other ideas aren’t the purpose of identifying the center of gravity. It doesn’t determine sling color, it doesn’t directly speed up the lift, and it doesn’t decide how many workers are needed. The focus is on stability, balance, and safe load handling.