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It depends on the type of equipment. Hammer-Head Cranes I believe would be ( Wind-stalled) around sustained gusts of 30-40 MPH, some makes can take stronger gales! Sometimes they have small weather stations in huts on construction sites using a Dwyer wind-speed meter. there are yellow and red markings on the speed scale indicating Caution and absolute stop ( Red Line) wind velocities. When a Hammerhead is shut down on site- the power is off and the brakes- including the swing or turret brake- are automatically locked, in part to prevent any ( Windmilling) if the weather starts gusting. I am not aware of any operant crane accident directly attributed to the Weather. ( does not apply to standing, but unmanned and not-working cranes).

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Q: At what wind speed do construction cranes cease work?
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