ADVANCED RIGGING QUESTIONS WITH
CORRECT ANSWERS 2025/2026
Cribbing is used to - CORRECT ANSWER -Support a load of the ground
When a load is to be pulled up an inclined plane - CORRECT ANSWER -10% must be added to
the load weight to determine the required pull capacity
The WLL for a double-wrapped basket hitch is - CORRECT ANSWER -Half that of a double basket
hitch
Which of the following is a correct statement regarding cribbing? - CORRECT ANSWER -
Softwoods such as pine are generally used for cribbing
The point at which an object is perpendicular to and balanced in relation to the earth's
gravitational pull is known as the - CORRECT ANSWER -Center of gravity
A mobile crane is stable when its leverage on the load is - CORRECT ANSWER -Greater than the
load's leverage on the crane
The gross load that a crane is capable of lifting can be found in the - CORRECT ANSWER -Load
chart
What crane movement affects the load's center of gravity in relation to the tipping axis? -
CORRECT ANSWER -Raising the boom
At what wind speed is it advisable to stop lifting operations? - CORRECT ANSWER -30 mph
, Cribbing is a process in which - CORRECT ANSWER -A load is placed on stacked timbers
When lifting bundles of rebar, the preferred method is to - CORRECT ANSWER -Thread sling eyes
in the same direction
When using cribbing, what affect on the WLL would be achieved by doubling the depth of the
beams? - CORRECT ANSWER -The WLL would quadruple
At 30 degrees to horizontal, a sling with two legs is carrying what percentage of the load in each
leg? - CORRECT ANSWER -100%
When hoisting bundles of bars 30 feet or longer, always use - CORRECT ANSWER -A spreader bar
The closer the angle of the sling to the horizontal, the - CORRECT ANSWER -Greater the tension
on the sling
When should an approved lift plan be reapproved? - CORRECT ANSWER -If there is any deviation
from the original lift plan
Electrical hazards in the lift area and swing direction and degree are factors to consider in
preparing which portion of a lift plan? - CORRECT ANSWER -Crane placement
Capacities for crawler cranes that have outrigger extensions may not exceed - CORRECT
ANSWER -85 percent of tipping
When planning a lift involving two cranes, calculate the lowest net capacities that both cranes
will have during the lift. The next step is to - CORRECT ANSWER -Make sure that the sum of the
lowest rated net capacities of the cranes exceeds the load weight
CORRECT ANSWERS 2025/2026
Cribbing is used to - CORRECT ANSWER -Support a load of the ground
When a load is to be pulled up an inclined plane - CORRECT ANSWER -10% must be added to
the load weight to determine the required pull capacity
The WLL for a double-wrapped basket hitch is - CORRECT ANSWER -Half that of a double basket
hitch
Which of the following is a correct statement regarding cribbing? - CORRECT ANSWER -
Softwoods such as pine are generally used for cribbing
The point at which an object is perpendicular to and balanced in relation to the earth's
gravitational pull is known as the - CORRECT ANSWER -Center of gravity
A mobile crane is stable when its leverage on the load is - CORRECT ANSWER -Greater than the
load's leverage on the crane
The gross load that a crane is capable of lifting can be found in the - CORRECT ANSWER -Load
chart
What crane movement affects the load's center of gravity in relation to the tipping axis? -
CORRECT ANSWER -Raising the boom
At what wind speed is it advisable to stop lifting operations? - CORRECT ANSWER -30 mph
, Cribbing is a process in which - CORRECT ANSWER -A load is placed on stacked timbers
When lifting bundles of rebar, the preferred method is to - CORRECT ANSWER -Thread sling eyes
in the same direction
When using cribbing, what affect on the WLL would be achieved by doubling the depth of the
beams? - CORRECT ANSWER -The WLL would quadruple
At 30 degrees to horizontal, a sling with two legs is carrying what percentage of the load in each
leg? - CORRECT ANSWER -100%
When hoisting bundles of bars 30 feet or longer, always use - CORRECT ANSWER -A spreader bar
The closer the angle of the sling to the horizontal, the - CORRECT ANSWER -Greater the tension
on the sling
When should an approved lift plan be reapproved? - CORRECT ANSWER -If there is any deviation
from the original lift plan
Electrical hazards in the lift area and swing direction and degree are factors to consider in
preparing which portion of a lift plan? - CORRECT ANSWER -Crane placement
Capacities for crawler cranes that have outrigger extensions may not exceed - CORRECT
ANSWER -85 percent of tipping
When planning a lift involving two cranes, calculate the lowest net capacities that both cranes
will have during the lift. The next step is to - CORRECT ANSWER -Make sure that the sum of the
lowest rated net capacities of the cranes exceeds the load weight
