JLG 1850SJ Operation & Safety Manual page 20

Safety Precautions
Wind Speed
Beaufort
Number
mph
0 0
1 1-3
2 4-7
3 8-12
4 13-18
5 19-24
6 25-31
7 32-38
8 39-46
9 47-54
1.3.5 Crushing and Collision Hazards
• Approved head gear must be worn by all operating and ground personnel.
• Watch for obstructions around machine and overhead when driving. Check
clearances above, on sides, and bottom of platform during all operations.
• During operation, keep all body parts inside platform railing.
• Use the boom functions, not the drive function, to position the platform close to
obstacles.
• Always post a lookout when driving in areas where vision is obstructed.
• Keep non-operating personnel at least 6 ft (1.8 m) away from machine during all
operations.
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Table 2. Beaufort Scale (For Reference Only)
Description
m/s
0-0.2 Calm
0.3-1.5
Light air
1.6-3.3 Light breeze
3.4-5.4
Gentle breeze
5.5-7.9
Moderate breeze
8.0-10.7
Fresh breeze
10.8-13.8
Strong breeze
13.9-17.1
Near Gale/Mod-
erate Gale
17.2-20.7
Fresh Gale
20.8-24.4
Strong Gale
31222393
Land Conditions
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 be-
gin to move.
Smaller trees sway.
Large branches in motion. Flags waving near
horizontal. 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.
1850SJ