2-10
K6Z
Assume a load of 9000 pounds (4082 kg) at 10'
(3.04 m) radius on the ground beside the truck to be
picked up, swung over and placed on the truck bed at
an 8' (2.43 m) radius from the crane. Crane is reeved
for single part.
$X8
Weight of load and load handling equip-
ment.
Load = 9000 lb (4082 kg)
1 Part Line Block = 150 lb (68 kg)
Slings = 50 lb (22 kg)
9200 lb (4173 kg)
$Z8
Starting Radius
Given = 10 ft (3.04 m)
$[8
Ending Radius
Given = 8 ft (2.43 m)
$\8
Refer to crane Capacity Chart.
The crane capacity at the 10' (3.04 m) point is 30,600
pounds (13,879 kg). Of course, at the 8' (2.43 m) ra-
dius, the capacity would be substantially more. There-
fore, the crane capacity is adequate.
$]8
Refer to winch Capacity Chart.
The capacity of a 1 part line is 7700 pounds (3492
kg), which is less than load to be lifted. Crane must be
reeved for 2 part to lift the 9,000 pound (4082 kg) load.
$*4$4&$)X];\'%
^_`]<j8
Actually when one puts on the 2 part block, the load
block weighs approximately 305 pounds (138 kg) rather
than the 150 pounds (68 kg) figured in Step 1 so actual
load lifted is 9355 pounds (4343 kg). Load [9,000 pounds
(4082 kg)] + 2 part block [305 pounds (138 kg)] + slings
[50 pounds (22.67 kg)].
K6[
A load of 2900 pound (1315 kg) is to be lifted from
the roof of a building at a radius of 30' (9.14 m) and a
height of 115' (35.05 m) and placed on the ground on
the other side of the truck at a radius of 50' (15.24 m).
$X8
Weight of load and load handling equip-
ment.
Load = 2900 lb (1315 kg)
1 Part Line Block = 150 lb (68 kg)
Slings = 30 lb (14 kg)
3080 lb (1397 kg)
$Z8
Starting Radius
Given = 30 ft (9.14 m)
$[8
Ending Radius
Given = 50 ft (15.24 m)
$\8
Refer to Crane Capacity Chart.
To reach the load on the roof, the jib must be uti-
lized to clear the roof with the load.
6$$*$
$$6$$%)$&(5'$%%'%7
$%(5$36$3'%$$&
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Both the retracted 25' (7.62 m)
jib length and extended 44' (13.41 m) jib length have
the necessary capacity at a 30' (9.14 m) radius. Only
the retracted 25' (7.62 m) jib has the capacity at the 50'
(15.24 m) radius to accomplish the task.
Starting Point: With the 25' (7.62 m) jib deployed
and the boom fully extended, the capacity is 4,850
pounds (2199 kg) at a 30' (9.14 m) radius and boom
angle of 75°.
Ending Point: With the main boom still fully ex-
tended, the capacity is 3,150 pounds (1428 kg) at a ra-
dius of 50' (15.24 m) and boom angle of 64.5°.
$*&$)3$&(56$&6
#4$&$&656$$%8$4$&
(55)%'4&6563')K$%%%
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$3')K$%%8$K%$%(57
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$]8
Refer to winch Capacity Chart.
The capacity of a 1 part line is 7700 pounds (3492
kg) which is well above the 3,080 pounds (1397 kg) to
be lifted.
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#%'$%$3#%%$
4&$4$&(5%)%8&+)%'
$)$)$64$#$$&36
5$%#%%$8
The operator should proceed to lift the load as
smoothly as possible.
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