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Lattice Boom Crane (Actual) Exam Graded A+
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Lattice Boom Crane (Actual) Exam Graded A+
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Lattice Boom Crane (Actual) ExamGraded A+
A crane is setup with 57 degree boom angle. There is no listing on the C capacity chart
for that angle. What action should the operator take? - ANSWER-Use the listing of the
next lower boom angle
A crane operator must have a physical every ___ years? - ANSWER-3
A crane operator must have a physical exam every: - ANSWER-3 years
A crane with a long boom operating at a short radius and 3 degrees out of level could
lose approximately what percent of its capacity? - ANSWER-60%
A hand signal that has an arm extended, thumb pointing up and fingers flexing means?
- ANSWER-Raise the boom and lower the load
A sudden start or stop will produce a: - ANSWER-Shock load
An Extension attached to the boom point to provide added boom length for lifting
specified loads is a: - ANSWER-Jib
An operator must understand crane functions, ______ and operating characteristics. -
ANSWER-Limititations
As a general rule on a multi- crane lift, no crane should be loaded greater than what
percentage of net capacity? - ANSWER-75%
As a load is lifted out of the water , the load on the crane will: - ANSWER-Increase
Before starting adjustments or repairs on a crane, what action must be taken? -
ANSWER-Render the starting means inoperative
Capacities above the bold dark line on the load chart are based on what? - ANSWER-
Structural competence of the crane
Capacities below the bold line on the cranes capacity chart are based on what? -
ANSWER-The stability of the crane
Crane capacity charts are based on what? - ANSWER-Structural competence and
stability
Crane operators are required to pass what types of examinations? - ANSWER-Written
and practical
, Cribbing/matting under a outrigger pad must be how big? - ANSWER-Larger than the
pad
Define operating radius - ANSWER-The horizontal distance between the axis of rotation
and the center of the gravity of a freely suspended load
During duty cycle work a crane must not be loaded more than ____% of its capacity. -
ANSWER-80
Extending crawler tracks on a crane has what effect on capacity? - ANSWER-Increases
capacity
Hand signals from what standard must be used in lifting operations? - ANSWER-OSHA
Sub Part CC
How do
You calculate the capacity of a crane - ANSWER-Subtract the capacity deductions from
the cranes gross capacity.
How much is the crane operator permitted to overload a crane beyond its rated capacity
in the course of normal operations? - ANSWER-None of the above
How often must a crane hook be inspected? - ANSWER-Each shift
If a load chart shows no capacity for a particular boom length and radius, the operator
should? - ANSWER-Not lift the load
If a telescopic boom crane is approaching a two blocking situation, the operator should:
- ANSWER-Retract the boom
If blocking or matting is required, it must be placed under what? - ANSWER-Outrigger
pads
If the operating radius is measured at 58ft and the load chart shows capacities at 55
and 60ft,which capacity should be used? - ANSWER-The capacity at 60ft
In what quadrant of operations does a truck crane have its greatest capacity? -
ANSWER-Over the rear
In which quadrant of operation does a truck crane have its greatest capacity? -
ANSWER-Over the rear
It is safe to operate a crane when the Danger of lightning is present. - ANSWER-False
Lifting from the jib on rubber is: - ANSWER-Prohibited by most manufacturers
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