What factor does swinging an unlevel crane to the low side affect most?

Swinging an unlevel crane to the low side primarily affects the load radius. The load radius refers to the horizontal distance from the center of the crane's rotation to the center of gravity of the load being lifted. When a crane is unlevel and swung toward the low side, the load radius can increase because the boom or jib may extend farther away from the center of the crane as it swings. This can lead to additional stress on the crane and can also impact the lifting capacity, as the crane may not be able to lift as effectively or safely when the load radius exceeds its designed limits.

Understanding the relationship between load radius and crane stability is crucial for safe operations. A larger load radius can result in a greater risk of tipping or losing control of the load, which emphasizes the importance of keeping the crane level during operations to ensure stability and safe lifting practices.