What is the wind speed threshold that most crane manufacturers require load chart capacities to be reduced?

The threshold for reducing load chart capacities due to wind speed is commonly set at 20 mph. This specification is important because wind can exert significant forces on both the crane and the load being lifted. If wind speed reaches or exceeds this threshold, it can compromise the stability and safety of lifting operations.

At 20 mph, the potential for wind to sway the load or cause dynamic forces that could lead to unstable conditions increases, particularly when dealing with larger or more exposed loads. Therefore, manufacturers establish this guideline to ensure that operators assess environmental conditions and reduce capacities accordingly to maintain safe lifting practices. Adhering to these guidelines reduces the risk of accidents and ensures compliance with safety regulations.

It's essential for operators to monitor wind conditions closely and make adjustments to their operations in order to mitigate risks associated with high winds.