Roxul Industrial Insulation Process - Manual (Page 164)

Usage t
abl
es
3.3.8.2 Wind speed
Generally speaking, the wind speed is also
dependent on the height and location (inland,
coastal). In order to calculate the insulation
thickness, the following wind speeds are
generally used: Inside: 1.1 mph (0.5 m/s)
Outside in protected conditions: 2.2 mph (1 m/s)
Outside: 11 mph (5 m/s)
Outside in windy conditions
(e.g. near to coast): 22 mph (10 m/s)
Beaufort scale Wind speed (m/s) Wind speed mph Definition
0 0 - 0.2 0 - 1 Calm
1 0.3 - 1.5 1 - 3 Light air
2 1.6 - 3.3 4 - 7 Light breeze
3 3.4 - 5.4 8 - 12 Gentle breeze
4 5.5 - 7.9 13 - 17 Moderate breeze
5 8.0 - 10.7 18 - 24 Fresh breeze
6 10.8 - 13.8 25 - 30 Strong breeze
7 13.9 - 17.1 31 - 38 Moderate gale (strong wind)
8 17.2 - 20.7 39 - 46 Fresh gale (strong wind)
9 20.8 - 24.4 47 - 54 Strong gale (strong wind)
10 24.5 - 28.4 55 - 63 Whole gale / storm
11 28.5 - 32.6 64 - 73 Violent storm
0.12 > 32.7 > 74 Hurricane
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