Crane Operation Safety Test Questions with Correct Answers Graded A+
Outrigger Extension - Answers Extending or setting an outrigger from the upper cab, when not visible,
requires walking around and looking for yourself.
Rigging Inspection - Answers Needs to be inspected daily, prior to use.
Truck Crane Safety - Answers Weight on left side of carrier must not be less than 15% of total crane
weight to maintain a margin of safety against tipping backwards.
Jib Angle Change - Answers When the jib angle to the ground goes from 70 degrees to 50 degrees, it
means boomed down.
Drum Rotation Indicators - Answers According to ASME B30.5, they should be provided and located to
afford sensing by the operator.
Jib Failure Location - Answers If a failure occurs while running a crane with a jib erected, it would occur
at the jib attachment pin.
Ground Support - Answers The ground under the crane should support all of the weight of the crane and
100% of the load.
Broken Wires Replacement - Answers For a standard running rope, 4 randomly distributed broken wires
in one lay are cause for considering replacement.
Ground Pressure Change - Answers When traveling a crawler crane from soft ground to hard ground,
ground pressure decreases.
Crawler Crane Safety - Answers Open side rails, open floor gates, access door that swings out, and the
use of fall protection attached to a structural member are safety requirements.
Lift Placement Responsibility - Answers When a crane operator is making a lift under the direction of an
appointed signal person, both the crane operator and the signal person are responsible for the
placement of the load.
Crawler Crane Stability Ratings - Answers On a crawler crane, the stability ratings are 80% with crawlers
retracted and 85% with crawlers extended.
Two-Crane Pick Capacity Reduction - Answers For a two-crane pick, no crane should be loaded to more
than 85% of its capacity.
OSHA Crane Inspection Regulation - Answers The inspection of cranes is governed by OSHA construction
regulation 1926.1400.
Rated Capacity Indicator - Answers According to ASME B30.5, it measures boom angle and weight, load
rating, and load weight.
, Wire Rope Inspection - Answers According to ASME and OSHA, 2 broken wires in 6 rope diameters or 4
broken wires in 30 rope diameters require rotation resistant wire rope to be taken out of service.
Crane Stowing - Answers When stowing a crane, the load should be where the chart provides the best
stability configuration.
Choker Hitch Capacity - Answers A choker hitch is rated at 80% of a vertical hitch capacity.
Sling Attachment - Answers When attaching slings to a load, the best location for the picking points is
below the center of gravity.
Pipe Bundle Slinging - Answers When slinging a bundle of pipe or tubing, a double basket would provide
the best contact between the sling and the load.
Two Blocking - Answers Two blocking occurs when a ball or hook block is pulled into the boom tip or jib
tip.
Personnel Platform Lift Safety Devices - Answers When doing a personnel platform lift, anti-two block
device and a boom length indicator must be installed on the crane.
Boom Angle Measurement - Answers Boom angle is measured through the center of the turntable.
Severe Duty Cycle Operations - Answers Pile driving would be the most severe duty cycle operation.
Non-Standard Hand Signals - Answers Non-standard hand signals are acceptable when the lift director,
crane operator, and the signal person agree to the hand signals.
Crane Leveling Effect - Answers When a crane is set up and working off level, swinging from the high side
to the low side will cause the radius to decrease.
Hoist Drum Line Pull - Answers Line pull increases as rope layers on the hoist drum increase.
Shackle Placement - Answers When placing a shackle on a crane hook, the correct procedure is to place
the shackle pin in the hook.
Power Line Clearance - Answers When working near a 34kV power line, a 20 ft clearance is required.
Rough Terrain Crane Load Direction - Answers When picking and carrying a load with a rough terrain
crane, the boom would be facing over the front.
Barge Crane Operation - Answers While operating a crane on a barge, the capacity must be de-rated by
20%.
Upperworks/Superstructure Definition - Answers Upperworks/superstructure is the upper frame above
the slewing ring bearing.
Carry Deck Crane Operation - Answers On a carry deck crane, the boom/jib extensions can be removed
and the crane is still permissible to operate.
Outrigger Extension - Answers Extending or setting an outrigger from the upper cab, when not visible,
requires walking around and looking for yourself.
Rigging Inspection - Answers Needs to be inspected daily, prior to use.
Truck Crane Safety - Answers Weight on left side of carrier must not be less than 15% of total crane
weight to maintain a margin of safety against tipping backwards.
Jib Angle Change - Answers When the jib angle to the ground goes from 70 degrees to 50 degrees, it
means boomed down.
Drum Rotation Indicators - Answers According to ASME B30.5, they should be provided and located to
afford sensing by the operator.
Jib Failure Location - Answers If a failure occurs while running a crane with a jib erected, it would occur
at the jib attachment pin.
Ground Support - Answers The ground under the crane should support all of the weight of the crane and
100% of the load.
Broken Wires Replacement - Answers For a standard running rope, 4 randomly distributed broken wires
in one lay are cause for considering replacement.
Ground Pressure Change - Answers When traveling a crawler crane from soft ground to hard ground,
ground pressure decreases.
Crawler Crane Safety - Answers Open side rails, open floor gates, access door that swings out, and the
use of fall protection attached to a structural member are safety requirements.
Lift Placement Responsibility - Answers When a crane operator is making a lift under the direction of an
appointed signal person, both the crane operator and the signal person are responsible for the
placement of the load.
Crawler Crane Stability Ratings - Answers On a crawler crane, the stability ratings are 80% with crawlers
retracted and 85% with crawlers extended.
Two-Crane Pick Capacity Reduction - Answers For a two-crane pick, no crane should be loaded to more
than 85% of its capacity.
OSHA Crane Inspection Regulation - Answers The inspection of cranes is governed by OSHA construction
regulation 1926.1400.
Rated Capacity Indicator - Answers According to ASME B30.5, it measures boom angle and weight, load
rating, and load weight.
, Wire Rope Inspection - Answers According to ASME and OSHA, 2 broken wires in 6 rope diameters or 4
broken wires in 30 rope diameters require rotation resistant wire rope to be taken out of service.
Crane Stowing - Answers When stowing a crane, the load should be where the chart provides the best
stability configuration.
Choker Hitch Capacity - Answers A choker hitch is rated at 80% of a vertical hitch capacity.
Sling Attachment - Answers When attaching slings to a load, the best location for the picking points is
below the center of gravity.
Pipe Bundle Slinging - Answers When slinging a bundle of pipe or tubing, a double basket would provide
the best contact between the sling and the load.
Two Blocking - Answers Two blocking occurs when a ball or hook block is pulled into the boom tip or jib
tip.
Personnel Platform Lift Safety Devices - Answers When doing a personnel platform lift, anti-two block
device and a boom length indicator must be installed on the crane.
Boom Angle Measurement - Answers Boom angle is measured through the center of the turntable.
Severe Duty Cycle Operations - Answers Pile driving would be the most severe duty cycle operation.
Non-Standard Hand Signals - Answers Non-standard hand signals are acceptable when the lift director,
crane operator, and the signal person agree to the hand signals.
Crane Leveling Effect - Answers When a crane is set up and working off level, swinging from the high side
to the low side will cause the radius to decrease.
Hoist Drum Line Pull - Answers Line pull increases as rope layers on the hoist drum increase.
Shackle Placement - Answers When placing a shackle on a crane hook, the correct procedure is to place
the shackle pin in the hook.
Power Line Clearance - Answers When working near a 34kV power line, a 20 ft clearance is required.
Rough Terrain Crane Load Direction - Answers When picking and carrying a load with a rough terrain
crane, the boom would be facing over the front.
Barge Crane Operation - Answers While operating a crane on a barge, the capacity must be de-rated by
20%.
Upperworks/Superstructure Definition - Answers Upperworks/superstructure is the upper frame above
the slewing ring bearing.
Carry Deck Crane Operation - Answers On a carry deck crane, the boom/jib extensions can be removed
and the crane is still permissible to operate.
