SECTION 1 – SAFETY PRECAUTIONS
1-8
– JLG Lift–
IF THE MACHINE IS USABLE WITH WIND (DEPENDING ON MODEL), DO NOT OPERATE THE MACHINE WHEN WIND CONDITIONS EXCEED 28 MPH
(12,5 M/S OR 45 KM/H).
Table 1-2. Beaufort Scale (For Reference Only)
Beaufort
Number
Wind Speed
Description
Land Conditions
mph
m/s
0
0
0-0.2
Calm
Calm. Smoke rises vertically.
1
1-3
0.3-1.5
Light air
Wind motion visible in smoke.
2
4-7
1.6-3.3
Light breeze
Wind felt on exposed skin. Leaves rustle.
3
8-12
3.4-5.4
Gentle breeze
Leaves and smaller twigs in constant motion.
4
13-18
5.5-7.9
Moderate breeze
Dust and loose paper raised. Small branches begin to move.
5
19-24
8.0-10.7
Fresh breeze
Smaller trees sway.
6
25-31
10.8-13.8
Strong breeze
Large branches in motion. Flags waving near horizontal. Umbrella
use becomes difficult.
7
32-38
13.9-17.1
Near Gale/Moderate Gale
Whole trees in motion. Effort needed to walk against the wind.
8
39-46
17.2-20.7
Fresh Gale
Twigs broken from trees. Cars veer on road.
9
47-54
20.8-24.4
Strong gale
Light structure damage.
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