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DO NOT OPERATE THE MACHINE WHEN WIND CONDITIONS EXCEED SPECIFICATIONS
SHOWN IN SECTION 6.3 OR AS SHOWN ON THE CAPACITY PLACARD ON THE PLAT-
FORM BILLBOARD.
Beaufort
Number
0
1
2
3
4
5
6
7
8
9
31217162
Table 1-2. Beaufort Scale (For Reference Only)
Wind Speed
Description
mph
m/s
0
0-0.2
1-3
0.3-1.5
Light air
4-7
1.6-3.3
Light breeze
8-12
3.4-5.4
Gentle breeze
13-18
5.5-7.9
Moderate breeze
19-24
8.0-10.7
Fresh breeze
25-31
10.8-13.8
Strong breeze
32-38
13.9-17.1
Near Gale/Moderate Gale
39-46
17.2-20.7
Fresh Gale
47-54
20.8-24.4
Strong Gale
Calm
Calm. Smoke rises vertically
Wind motion visible in smoke
Wind felt on exposed skin. Leaves rustle
Leaves and smaller twigs in constant motion
Dust and loose paper raised. Small branches begin to move.
Smaller trees sway.
Large branches in motion. Whistling heard in overhead wires. Umbrella use
becomes difficult.
Whole trees in motion. Effort needed to walk against the wind.
Twigs broken from trees. Cars veer on road.
Light structure damage.
SECTION 1 - SAFETY PRECAUTIONS
Land Conditions
1-7
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