VELOMBRA SRL USER MANUAL MAGICAL
Rev. 2 - 06.2012
27 of 70
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ALIANO
ENGLISH
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ANÇ
AIS
DEUT
SCH
ESP
AÑOL
DATA SHEETS
DATA SHEET 1 - STRENGTH AND EFFECTS OF THE WIND ACCORDING TO THE BEAUFORT SCALE
Degree
Load (N/m
2
)
Knots
Km/h
m/s
Environmental situation
Effects of the wind
0
< 40
0-1
0-1
< 0,3
Calm
Dead calm, smokes rises vertically.
1
< 40
1-3
1-5
0,3-1,5
Light air
Wind direction is indicated by smoke, not by flag.
2
< 40
4-6
6-11
1,6-3,3
Light breeze
Wind felt in face and the flag moves.
3
< 40
7-10
12-19
3,4-5,4
Gentle breeze
Leaves and small branches move.
4
40
11-16
20-28
5,5-7,9
Moderate breeze
Raises dust and paper, small branches are moved.
5
70
17-21
29-38
8-10,7
Fresh breeze
Small trees begin to sway.
6
110
22-27
39-49
10,8-13,8
Strong breeze
Large branches move, umbrellas used with difficulty.
7
> 110
28-33
50-61
13,9-17,1
Near gale
Large branches move, very difficult to walk against the wind.
8
> 110
34-40
62-74
17,2-20,7
Gale
Branches broken from trees, difficult to walk outdoors.
9
> 110
41-47
75-88
20,8-24,4
Strong gale
Tiles fall from roofs.
10
> 110
48-55
89-102
24,5-28,4
Storm
Trees uprooted.
11
> 110
56-63
103-117
28,5-32,6
Violent storm
Serious damage to buildings.
12
> 110
> 64
> 118
> 32,7
Hurricane
Immense damage.
Wind resistance class of awning:
Degree 5