2.1.3 Explanation of wind resistance classes
Wind resistance class 0 equates (in accordance with DIN EN
13561) either to a level of performance that is not required or has
not been measured, or to a product that does not meet the
requirements of Class 1. The awning must never be used in
windy conditions.
The awning may only remain open until winds have reached wind
strength 4.
Definition acc. to the Beaufort scale: light breeze, light wind
Wind moves small tree branches and twigs, lifts dust and loose
paper
Wind speed 20-27 km/h = 5.5-7.4 m/s
The awning may only remain open until winds have reached wind
strength 5.
Definition acc. to the Beaufort scale: fresh breeze, fresh wind
Small trees in leaf begin to sway;
whitecaps form at sea.
Wind speed 28-37 km/h = 7.5-10.4 m/s
The awning may only remain open until winds have reached wind
strength 6.
Definition acc. to Beaufort scale: strong breeze
Larger tree branches move, umbrellas are hard to hold, telegraph
lines whistle in the wind
Wind speed 38-48 km/h = 10.5-13.4 m/s
Source: German Met Office (DWD) - Offenbach
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