9-43.
Which of the following personnel
is responsible for filling out
the crane lift checklist?
1.
The rigger
2.
The signalman
3.
The crane crew supervisor
4.
The crane test mechanic
944.
The rated capacities of mobile
cranes are based on what two
factors?
1.
Width and Length
2.
Strength and stability
3.
Rigging and winch pull capacity
4.
Drawbar pull and mobility
9-45.
In situations where crane
outriggers cannot be fully
extended, you determine the load
capacity of a crane by using the
without outriggers load capacity
ratings.
1.
True
2.
False
9-46.
The boom angles for clamshell
operations should normally be
between what boom angle degrees?
1.
20° to 30°
2.
30° to 40°
3.
40° to 60°
4.
60° to 80°
9-47.
The boom angle for dragline
operations should normally be
between what boom angles degrees?
1.
25° to 35°
2.
35° to 45°
3.
45° to 55°
4.
55° to 65°
Learning Objective:
Recognize
the components and types of pile-
driving leads used in the NCF.
9-48.
A pile-driving hammer is
categorized under what USN
number registration series?
1.
82-00000
2.
60-00000
3.
42-00000
4.
36-00000
9-49.
The combined weight of all pile-
driving attachments reduces the
capacity of the crane.
1.
True
2.
False
9-50.
Piledriving leads serve what
function during pile-driving
operations?
1.
As tracks for the pile-driving
hammer
2.
As a guide for positioning a
pile
3.
As guides for steadying a pile
4.
All of the above
9-51.
During what time period should
pile-driving lead bolts be checked
for tightness?
1.
At the beginning of each day
2.
At the beginning of each week
3.
At the beginning of each month
4.
At the beginning of each shift
9-52.
What type of lead is held plumb
or at the desired batter with the
second single crane line?
1.
Swinging
2.
Underhung
3.
Extended four-way
4.
Overhead
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