Exam Questions and CORRECT Answers
What is meant by the term two blocking? - CORRECT ANSWER -The load block
contacts the boom point sheaves.
Lifting 20,000 lbs with a 2 leg bridle sling at 30* horizontal sling angle, what is the force applied
to each leg? - CORRECT ANSWER -20,000 pounds
In multiple crane lifts using an equalizer beam, The weight of the beam should be considered: -
CORRECT ANSWER -Part of the load weight
What is required if there is a deviation from the plan lift? - CORRECT ANSWER -A new
plan lift
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? - CORRECT ANSWER -5%
All of the following are results of unbalanced reeving of the hook block EXCEPT: - CORRECT
ANSWER -Wear on the hook
Before a spreader bar or beams can be used they must have been: - CORRECT
ANSWER -Tested and approved
When materials are being hoisted to an upper level, a tagline is used to: - CORRECT
ANSWER -Help control the load
Two cranes are lifting 100 tons if crane A has 40% of the load, how much weight will crane B
have on its hook? - CORRECT ANSWER -60,000 lbs
, To confirm the rated capacity of a specific sling, consult the manufacturer 's - CORRECT
ANSWER -Sling Tag
OSHA regulations require hook replacements if the opening exceeds what percentage of its
original throat opening? - CORRECT ANSWER -15%
At what percentage of increase in length should a change sling be removed from service? -
CORRECT ANSWER -5%
The methodical process that attempts to identify hazards and devise plans to overcome or
eliminate hazards which may interfere with crane or rigging is called: - CORRECT
ANSWER -Lift plan
What provides additional control of a load been lifted? - CORRECT ANSWER -Tag lines
When traveling on a rubber tire mobile crane, how should the boom be positioned? - CORRECT
ANSWER -In line with the direction of travel
Before performing pick and carry operations with any mobile crane, it is important to: -
CORRECT ANSWER -Refer to the manufacturer's capacity chart
According to ASMEB30.5,a two crane lift is signaled by: - CORRECT ANSWER -One
designated person
What is The PRIMARY concern when working with high boom angles? - CORRECT
ANSWER -Backward stability
On multiple crane lifts, the load on each crane should NOT exceed what percentage of capacity?
- CORRECT ANSWER -75%
What are lifting lugs? - CORRECT ANSWER -Eyelets welded to a steel plate for lifting