Manitowoc Grove RT600E Operator's Manual page 30

SAFETY PRECAUTIONS
Table 2-2 Wind Drag Coefficient
Shape
8384-2
Table 2-3 Awr Ratio and Permissible Wind Speed V(z) - Non - metric
Note: Permissible and rated wind speeds in this table are the 3-second gust wind speeds at boom tip height.
Ratio:
For Rated Capacity at 30 mph
For Allowable Capacity at 45 mph
2-12
Cd
1.1 to 2.0
0.3 to 0.4
0.6 to 1.0
0.8 to 1.2
0.2 to 0.3
0.05 to 0.1
Turbine Blade or
Complete Rotor
Approximately 1.6
1.2
27.4
41.1
Published 05-02-2018 Control # 088-10
RT600E OPERATOR MANUAL
Maximum Permissible Wind Speed
If the wind resistant area of the load Awr
the allowable wind resistant area Awr
used to determine a permissible wind speed V(z) for the load
using Table 2-3.
1.4 1.6
Maximum Permissible Wind Speed (mph)
25.4 23.7
38.0 35.6
is greater than
(load)
, the ratio can be
(allow)
1.8 2
22.4 21.2
33.5 31.8