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The 5th work at height safety poster in the series looks at the risks of high wind conditions.
Wind and weather - All MEWPs have a manufacturers recommended wind tolerance.
The most commonly quoted wind tolerance is force six which is a strong breeze 28 to 31 mph or 12.5 metres per second, however some MEWPs will have no wind tolerance because they are designed for indoor use only. Always check the recommended wind speed for the machine you are using. This information can be found in the operators manual
and it should also be on a decal (information sticker) on the machine.
Designed wind speeds are based on three second gusts, more exposure could cause the machine to become unstable. Wind speed should be checked at the working height by means of a hand held wind meter (anemometer) which is the only method considered reliable.