Load Distribution in Multi-Leg Lifts: Balancing Non-Symmetrical Loads and Proper Rigging Practices

When lifting a non-symmetrical load with a center of gravity that is not in the middle, it is generally not advisable to base the slings and rigging hardware solely on the calculated tension of the sling closest to the center of gravity. Proper load distribution and balance are critical for safe lifting operations.

Lifting with multiple sling legs requires careful consideration of the load's characteristics and weight distribution. Each sling leg should be appropriately positioned and sized to ensure an even distribution of the load and minimize the risk of imbalanced forces.

To achieve proper load distribution, it is recommended to calculate the tensions in each sling leg based on the load's center of gravity and the specific lifting configuration. This includes considering factors such as the load's weight distribution, shape, and stability. The slings and rigging hardware should be selected and rated to handle the anticipated tensions in all sling legs, not just the one closest to the center of gravity.

Proper rigging practices involve using appropriate angles, lengths, and hardware to achieve balanced loading. Utilizing spreader bars, lifting beams, or other specialized rigging equipment can help distribute the load evenly among the sling legs and ensure safe lifting.

It is crucial to follow relevant industry standards, guidelines, and the manufacturer's instructions when rigging and lifting non-symmetrical loads. Consulting with a qualified engineer or a knowledgeable rigging professional can provide specific guidance tailored to the unique characteristics of the load, ensuring safe and effective lifting operations.