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What is required if there is a deviation from the lift plan?
a. The supervisor's permission
b. The rigger's permission
c. A new lift plan
d. Mark ups on the existing lift plan - Answer-c. A new lift
plan
On level ground using skids and rollers, what percent of
the weight of the load should yield the required line pull as
a general rule of thumb?
a. 2%
b. 5%
c. 10%
d. 20% - Answer-b. 5%
All of the following are results of unbalanced reeving of the
hook block EXCEPT:
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a. Wear on the sheaves
b. Torque on the boom
c. Wear on the hook
d. Wear on the wire rope - Answer-c. Wear on the hook
Before a spreader bar or beams can be used they MUST
have been:
a. Repainted
b. Used before
c. Tested and approved
d. Upgraded from the previous job - Answer-c. Tested and
approved
When materials are being hoisted to an upper level, a tag
line is used to:
a. Help raise the load
b. Help control the load
c. Stop the process
d. Stop material from falling - Answer-b. Help control the
load
What is meant by the term "two blocking"?
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a. Placing blocks under the outrigger beams.
b. The load block contacts the boom point sheaves.
c. Stacking loads on top of one another.
d. The load strikes the boom while swinging. - Answer-b.
The load block contacts the boom point sheaves.
Lifting 20,000 lbs with a 2-leg bridle sling at a 30°
horizontal sling angle, what is the force applied to each
leg?
a. 10,000 pounds
b. 20,000 pounds
c. 30,000 pounds
d. 40,000 pounds - Answer-b. 20,000 pounds
In multiple crane lifts using an equalizer beam, the weight
of the beam should be considered:
a. Part of the crane boom
b. Part of the load weight
c. Part of the crane weight
d. A non-factor - Answer-b. Part of the load weight