When can wind affect the load capacity of a crane?

Wind can significantly impact the load capacity of a crane, particularly when it comes from the sides. When wind hits the crane or the load from the side, it creates added lateral forces that can destabilize the load, leading to potential tipping or swinging. This is crucial for signal persons to understand, as their responsibility includes ensuring that loads are lifted and moved safely in various weather conditions.

Wind coming from the front or rear may have less of an impact on the load capacity because it does not exert the same lateral force on the crane. In these cases, the crane is more likely to maintain stability and control over the load. Overall, the most critical consideration is the direction of the wind and how it affects stability, highlighting the importance of assessing weather conditions before commencing any lifting operation.