What is the safe wind speed for a crane operation?

The manufacturer of the crane typically determines the safe wind speed for operations, and this information should be included in the crane's operator manual. However, as a general rule, the Health and Safety Executive (HSE) advises against operating cranes in winds greater than 25 mph (40.23 km/h) 11.18 Meters per second - with gusts not surpassing 35 mph (56.32 km/h).

It's vital to remember that the wind speed restrictions may vary depending on the type of crane and the weight. It is essential to abide by the manufacturer's instructions and to refer to the operator manual to determine the precise wind speed restrictions for the crane you are operating.

Environmental factors such as wind direction, crane stability, the weight of the cargo being lifted, and crane placement must also be taken into account.

In addition, it is essential to recognise that tall buildings can create a vortex effect, in which wind speeds rise with height. This can be especially hazardous for cranes, as it might lead them to fall over. When the boom is extended, the risk increases because the crane's centre of gravity becomes less stable. It is crucial to be aware of these potential dangers and to take the required precautions, such as altering the angle of the boom or shutting down the crane if necessary. In order to accurately analyse the wind conditions at the crane operation location, it may be essential to take wind speed and direction measurements at several heights.

An anemometer (wind sensor) is often used to establish safe operating conditions. Handheld or tripod-mounted anemometers can be used to measure the wind speed at the site of the crane operation.

Some cranes are fitted with anemometers that measure wind speed and direction near the boom's tip. These anemometers can monitor wind speed in real-time and assist crane operators in determining when it is safe to operate the crane.