Why should lift points be symmetric when using multiple slings?

• A. To increase the load on one side for stability.
• B. To ensure equal tension and an upright lift, reducing the risk of rotation or imbalance.
• C. To decrease crane operator workload.
• D. To shorten overall lift time.

Answer: (B)

Keeping lift points symmetric ensures equal tension among the slings and keeps the load upright under the crane hook. When the sling tensions balance, the load’s center of gravity stays aligned with the lifting point, so the load rises level rather than tilting or rotating. This stability reduces the chance of twisting, swinging, or uneven loading on the slings, which can lead to sling failure or load loss.

If lift points aren’t symmetric, one sling may carry more weight than the others, causing the load to tilt or swing and placing uneven stresses on the rigging and crane. That instability increases the risk of the load contacting nearby structures, the hook, or the crane itself, and makes the lift harder to control.

To achieve symmetry, use lifting points that bracket the load’s center of gravity, employ equal-length slings or a spreader bar, and verify the load is level before hoisting and again after a small lift.