Rigging practices UPDATED ACTUAL
Exam Questions and CORRECT Answers
A load chart range diagram can best be used to help identify: - CORRECT ANSWER - net
capacity
for mobile crane working at maximum radius, exceeding what percentage of the cranes capacity
requires the radius to be verified? - CORRECT ANSWER - 80%
the minimum depth of thread engagement for a 1/2 in eyebolt into steel object is? - CORRECT
ANSWER - 3/4 in
when tying knots in synthetic rope lashing, the rated load is increased by 50% ? - CORRECT
ANSWER - false
the size of shackle that can be used in the eye of a wire rope sling must be ________ the wire
rope size? - CORRECT ANSWER - equal to or greater than
a shackle must be marked with the rated load, re-inspected due date, and the date manufacture? -
CORRECT ANSWER - false
when working near energized power lines where the crane or load could cross the absolute limit
of approach, what additional requirements must the crane team follow? - CORRECT
ANSWER - designated spotter must be stationed to watch clearances
the load weight of a personnel lift must not exceed _____ of the hoists rated capacity for the
working radius ? - CORRECT ANSWER - (50%)
a manufacturer's certificate of proof test may satisfy the initial test requirements for rigging
equipment? - CORRECT ANSWER - false
, which of the following operator actions will most likely cause a reduction in the capacity of a
mobile crane? - CORRECT ANSWER - booming down
an angular pull of 45 degrees is allowed on non shouldered type eye bolts? - CORRECT
ANSWER - false
two slings creating a 60 degree sling angle are used to lift a 4,000 pound item. the appropriate
rated load for each sling is 2,000 pounds. - CORRECT ANSWER - false
when are loads allowed to be moved over personnel? - CORRECT ANSWER - never
given a 1/2 in steel walled empty cylindrical tank that is opened at one end, calculate its weight
(round answer to the nearest hundred) - CORRECT ANSWER - 1800 lbs
a crane accident occurs when any one of the elements in the crane operating envelope fails to
perform correctly during crane operations, maintenance, or testing, which results in any of the
following except: - CORRECT ANSWER - over rigging the load
a straight-line hitch is good for _____ of a sling rated load? - CORRECT ANSWER -
100%
there are three slings hanging from a hook. each sling has a rated capacity of 2,000 lbs. what is
the heaviest load that could be lifted using these slings if they were attached to a single point -
CORRECT ANSWER - 2000 lbs
why must hoisting be stopped once the load is completely off the ground? - CORRECT
ANSWER - to determine sling angle stress
the minimum crane team consist of ? - CORRECT ANSWER - the crane operator and
rigger-in-charge
Exam Questions and CORRECT Answers
A load chart range diagram can best be used to help identify: - CORRECT ANSWER - net
capacity
for mobile crane working at maximum radius, exceeding what percentage of the cranes capacity
requires the radius to be verified? - CORRECT ANSWER - 80%
the minimum depth of thread engagement for a 1/2 in eyebolt into steel object is? - CORRECT
ANSWER - 3/4 in
when tying knots in synthetic rope lashing, the rated load is increased by 50% ? - CORRECT
ANSWER - false
the size of shackle that can be used in the eye of a wire rope sling must be ________ the wire
rope size? - CORRECT ANSWER - equal to or greater than
a shackle must be marked with the rated load, re-inspected due date, and the date manufacture? -
CORRECT ANSWER - false
when working near energized power lines where the crane or load could cross the absolute limit
of approach, what additional requirements must the crane team follow? - CORRECT
ANSWER - designated spotter must be stationed to watch clearances
the load weight of a personnel lift must not exceed _____ of the hoists rated capacity for the
working radius ? - CORRECT ANSWER - (50%)
a manufacturer's certificate of proof test may satisfy the initial test requirements for rigging
equipment? - CORRECT ANSWER - false
, which of the following operator actions will most likely cause a reduction in the capacity of a
mobile crane? - CORRECT ANSWER - booming down
an angular pull of 45 degrees is allowed on non shouldered type eye bolts? - CORRECT
ANSWER - false
two slings creating a 60 degree sling angle are used to lift a 4,000 pound item. the appropriate
rated load for each sling is 2,000 pounds. - CORRECT ANSWER - false
when are loads allowed to be moved over personnel? - CORRECT ANSWER - never
given a 1/2 in steel walled empty cylindrical tank that is opened at one end, calculate its weight
(round answer to the nearest hundred) - CORRECT ANSWER - 1800 lbs
a crane accident occurs when any one of the elements in the crane operating envelope fails to
perform correctly during crane operations, maintenance, or testing, which results in any of the
following except: - CORRECT ANSWER - over rigging the load
a straight-line hitch is good for _____ of a sling rated load? - CORRECT ANSWER -
100%
there are three slings hanging from a hook. each sling has a rated capacity of 2,000 lbs. what is
the heaviest load that could be lifted using these slings if they were attached to a single point -
CORRECT ANSWER - 2000 lbs
why must hoisting be stopped once the load is completely off the ground? - CORRECT
ANSWER - to determine sling angle stress
the minimum crane team consist of ? - CORRECT ANSWER - the crane operator and
rigger-in-charge
