
2-9
CD25
SAFETY INFORMATION
2
Published 1-06-2017 Control # 579-01
Calculate
Allowable Load
Lifting is not permitted.
Cease Lifting Operations
.
Plan the lift when
V(z)
< calculated
Maximum Permissible Wind Speed.
It is permissible to lift
Allowable load
at this windspeed,
V(z)
Maximum Permissible
Wind Speed > V(z)?
YES
YES
NO
NO
NO
V(z) =
3 second gust wind speed at boom tip, m/s (mph)
Ap
= Projected Wind Area of Load, m
2
(ft
2
)
Determine
Maximum Permissible Wind
Speed
Awr
(Allow)
>Awr
(load) ?
Awr
(load)
= Actual Wind Resistance Area for the Load, m
2
(ft)
Awr
(Allow)
= Allowable Wind Resistance Area of the Load, m
2
(ft2
Cd
= air drag coefficient of load
Calculate
Awr
(load)
= Ap X Cd
Determine
Cd
of Load
Ap
= maximum height X maximum length
See Figure 2-2
Lifting is not permitted.
Cease Lifting Operations
V(z)
> 20.1 m/s (45 mph)
13.4 m/s <
V(z)
< 20.1 m/s
(30 mph <
V(z)
< 45 mph)
Use Main Boom on
Fully Extended Outriggers ONLY
V(z)
< 13.4 m/s (30 mph)
Main Boom
Allowable load =
Published Rated Capacity
Allowable Load = Published Rated Capacity
X Capacity Reduction Factor
(from Load Chart Notes)
Determine
Ap
Ap / Allowable Load
< 0.5 m
2
/t ?
(Ap / Allowable Load
< 0.0025 ft
2
/lb)
Awr
(Allow)
= 1.2 m
2
/t
(Awr
(Allow)
= 0.0059 ft
2
/lb)
From Figure 2-3
Calculate
Awr
(Allow)
of allowable load
YES
Calculate Ratio:
Awr
(load)
/ Awr
(Allow)
From (Table 2-3)
Determine 3-Second Gust
Wind Speed at boom tip,
V(z)
V(z) =
[(
z
/10)
0.14
+ 0.4]
v
[m/s]
V(z) =
[(
z
/33)
0.14
+ 0.4]
v
[mph]
FIGURE 2-1
Simplified Method to Determine Maximum Permissible Wind Speed
Reference Only
Содержание CD25
Страница 5: ...Operator Manual CD25 R e f e r e n c e O n l y ...
Страница 6: ...R e f e r e n c e O n l y ...
Страница 14: ...TABLE OF CONTENTS CD25 OPERATOR MANUAL TOC 6 THIS PAGE BLANK R e f e r e n c e O n l y ...
Страница 18: ...INTRODUCTION CD25 1 4 Published 1 06 2017 Control 579 01 THIS PAGE BLANK R e f e r e n c e O n l y ...
Страница 55: ...2 37 CD25 SAFETY INFORMATION 2 Published 1 06 2017 Control 579 01 8496 1 FIGURE 2 10 R e f e r e n c e O n l y ...
Страница 66: ...SAFETY INFORMATION CD25 2 48 Published 1 06 2017 Control 579 01 2 48 THIS PAGE BLANK R e f e r e n c e O n l y ...
Страница 100: ...CAPACITY CHART CD25 4 4 Published 1 06 2017 Control 579 01 THIS PAGE BLANK R e f e r e n c e O n l y ...
Страница 150: ...MAINTENANCE CD25 6 40 Published 1 06 2017 Control 579 01 THIS PAGE BLANK R e f e r e n c e O n l y ...
Страница 152: ...ADJUSTMENTS CD25 7 2 Published 1 06 2017 Control 579 01 THIS PAGE BLANK R e f e r e n c e O n l y ...
Страница 156: ...8 4 SPECIFICATIONS CD25 Published 1 06 2017 Control 579 01 Boom angle Maximum 80 Minimum 0 R e f e r e n c e O n l y ...
Страница 159: ...R e f e r e n c e O n l y ...
Страница 160: ...R e f e r e n c e O n l y ...