Table of Contents
Advertisement
DO NOT OPERATE THE MACHINE WHEN WIND CONDITIONS EXCEED 28 MPH (12.5 M/
S).
Beaufort
Number
mph
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
3121670
Table 1-2. Beaufort Scale (For Reference Only)
Wind Speed
Description
m/s
0
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/Moderate Gale
17.2-20.7
Fresh Gale
20.8-24.4
Strong Gale
SECTION 1 - SAFETY PRECAUTIONS
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 begin 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.
1-9
Advertisement
Table of Contents
