Advanced Rigger 2024
What is meant by the term "two blocking" - CORRECT ANSWER The
load block contacts the boom point sheaves
Lifting 20,000 pound with a 2-leg bridle sling at 30% horizontal sling
angle, what is the force applied to each leg. - CORRECT ANSWER
20,000 pound
In multiple crane...
What is meant by the term "two blocking" - CORRECT ANSWER The
load block contacts the boom point sheaves
Lifting 20,000 pound with a 2-leg bridle sling at 30% horizontal sling
angle, what is the force applied to each leg. - CORRECT ANSWER
20,000 pound
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 lift plan. - CORRECT
ANSWER A new lift plan
On level ground using skids and roilers, what percent 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 tag line 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 replacement if the opening exceeds
what percentage of its original throat opening? - CORRECT ANSWER
15%
At what percentage of increase in length should a chin sling be
removed from service? - CORRECT ANSWER 5%
The methodical process that attempts to identify hazards and devise
plans to overcome or eliminze hazards which may interfere with crane
rigging is called. - CORRECT ANSWER Lift plan
What provides additional control of a load being 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 directions 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 ASME B30.5 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 Cross wind stability
On multipie crane lifts, the load on each crane should NOT exceed
what percentage of capacity? - CORRECT ANSWER 75%
What are lifting lugs? - CORRECT ANSWER Eyeiets welded to a steel
plate for lifting
The formula for determining stress on a snatch block performing a
vertical lift is: line pull x block factor = block load. What must be done
to calculate formula? - CORRECT ANSWER Multiply the load weight
by the coefficient of friction to determine line pull,and then use the
standard formula
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