Manitowoc National Crane NBT40 Series User Manual

SAFETY INFORMATION NBT40 SERIES OPERATOR MANUAL
2-16
Published 4-23-2018 Control # 239-11
• Is the load to be lifted less than allowable load?
8,000 kg ≤ 12,040 kg YES
• Is Awr
(load)
less than Awr
(allow)
?
19.83 m
2
≤ 14.45 m
2
NO
Conclusion: This load is NOT
permissible to lift in wind
speed up to 20.1 m/s, but permitted to lift at a reduced wind
speed calculated as follows:
Ratio = 1.37
From Table 2-5, the maximum permissible wind speed at
ratio of 1.37 (rounded to next higher table value of 1.4) is
17.0 m/s.
Conclusion: This load is permissible to lift in wind speed up
to 17.0 m/s only.

Manitowoc National Crane NBT40 Series Specifications

General

Brand	Manitowoc
Model	National Crane NBT40 Series
Category	Construction Equipment
Language	English