NCCCO Lattice Boom
General Knowledge Exam
Newest / NCCCO Lattice
Boom General Knowledge
Exam Preparation/ NCCCO
Lattice Boom General
Knowledge
What is the main purpose of a jib/extension? - ANSWER-To extend reach higher or up
and over
When the number of layers of rope on a drum increase the line pull___________. -
ANSWER-Decreases
When handling boom sections, the best place for slings to be attached is; - ANSWER-At
the pin connections at the ends of the top chords
, Placing timber blocking under the tips of the tracks on a crawler crane will; - ANSWER-
Make the crane more stable
What is the major effect of stopping suddenly a rapid swing while operating long boom
crane? - ANSWER-Action may cause the crane boom collapse and/or overturn the
crane
According to B30.10 hooks shall be removed from service when the throat opening
exceeds _____ the original throat opening. - ANSWER-5%
On a crawler crane ground bearing pressure is greatest where? - ANSWER-Over the
corner
During disassembly of a long boom, the pendant lines are connected at the maximum
cantilever point and the boom is slightly lifted off the ground, which boom connection
pins are to be removed next? - ANSWER-The bottom pins ahead of the cantilever point
Most crane manufactures require the load chart capacities must be reduced when wind
speed reaches; - ANSWER-20 mph
The definition of cantilever of a lattice boom crane is; - ANSWER-The boom suspended
past the pendant connections
What chart do you use when operating a crane on a barge; - ANSWER-List chart
According to OSHA, Jibs must have a positive ________ from backwards overturning -
ANSWER-Stop
Mobile cranes on barges shall be - ANSWER-Physically attached to the barge
When a crane is properly barricaded, what is the clearance required all the way around
360 degrees between the superstructure and the barricade when swung 360 degrees? -
ANSWER-2 feet
According to ASME B30.5 a fire extinguisher shall have a rating of __________ and
shall be available at all operator's stations or cabs of the equipment. - ANSWER-10 BC
or higher
When assembling a lattice boom crane the top pins of the boom sections should be
inserted; - ANSWER-First
Block hoisting sheaves should have a minimum pitch diameter of at least________ the
rope diameter. - ANSWER-16 times
What is the correct method of checking the brakes of crane that has been already
assembled? - ANSWER-Lift the load a few inches off the ground and apply the brakes
General Knowledge Exam
Newest / NCCCO Lattice
Boom General Knowledge
Exam Preparation/ NCCCO
Lattice Boom General
Knowledge
What is the main purpose of a jib/extension? - ANSWER-To extend reach higher or up
and over
When the number of layers of rope on a drum increase the line pull___________. -
ANSWER-Decreases
When handling boom sections, the best place for slings to be attached is; - ANSWER-At
the pin connections at the ends of the top chords
, Placing timber blocking under the tips of the tracks on a crawler crane will; - ANSWER-
Make the crane more stable
What is the major effect of stopping suddenly a rapid swing while operating long boom
crane? - ANSWER-Action may cause the crane boom collapse and/or overturn the
crane
According to B30.10 hooks shall be removed from service when the throat opening
exceeds _____ the original throat opening. - ANSWER-5%
On a crawler crane ground bearing pressure is greatest where? - ANSWER-Over the
corner
During disassembly of a long boom, the pendant lines are connected at the maximum
cantilever point and the boom is slightly lifted off the ground, which boom connection
pins are to be removed next? - ANSWER-The bottom pins ahead of the cantilever point
Most crane manufactures require the load chart capacities must be reduced when wind
speed reaches; - ANSWER-20 mph
The definition of cantilever of a lattice boom crane is; - ANSWER-The boom suspended
past the pendant connections
What chart do you use when operating a crane on a barge; - ANSWER-List chart
According to OSHA, Jibs must have a positive ________ from backwards overturning -
ANSWER-Stop
Mobile cranes on barges shall be - ANSWER-Physically attached to the barge
When a crane is properly barricaded, what is the clearance required all the way around
360 degrees between the superstructure and the barricade when swung 360 degrees? -
ANSWER-2 feet
According to ASME B30.5 a fire extinguisher shall have a rating of __________ and
shall be available at all operator's stations or cabs of the equipment. - ANSWER-10 BC
or higher
When assembling a lattice boom crane the top pins of the boom sections should be
inserted; - ANSWER-First
Block hoisting sheaves should have a minimum pitch diameter of at least________ the
rope diameter. - ANSWER-16 times
What is the correct method of checking the brakes of crane that has been already
assembled? - ANSWER-Lift the load a few inches off the ground and apply the brakes
