NCCCO Lattice Boom General Knowledge
Questions And Answers Latest Top Score.
The lattice boom is designed to take winds of up to 20 mph. from the side plus a full
rated load, plus a direct side load equal to what percent of the rated load? - correct
answer. 2%
The part of the load chart governed by stability is based on what percentage of capacity
while a crawler crane is working over the side quadrant? - correct answer. A. 75%
The most unstable working quadrant for a crawler crane is the; - correct answer.
Side
What type of capacity is listed on a crane load chart? - correct answer. Static
If the manufacture of a particular crane does not specifically permit pick and carry
operations what procedure must be followed during this operation? - correct answer.
Don't make any pick and carry lifts
What is the main purpose of a jib/extension? - correct answer. To extend reach
higher or up and over
When the number of layers of rope on a drum increase the line pull___________. -
correct answer. Decreases
When handling boom sections, the best place for slings to be attached is; - correct
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; - correct
answer. Make the crane more stable
What is the major effect of stopping suddenly a rapid swing while operating long boom
crane? - correct 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. - correct answer. 5%
, On a crawler crane ground bearing pressure is greatest where? - correct 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? - correct answer. The bottom pins ahead of the
cantilever point
Most crane manufactures require the load chart capacities must be reduced when wind
speed reaches; - correct answer. 20 mph
The definition of cantilever of a lattice boom crane is; - correct answer. The boom
suspended past the pendant connections
What chart do you use when operating a crane on a barge; - correct answer. List
chart
According to OSHA, Jibs must have a positive ________ from backwards overturning -
correct answer. Stop
Mobile cranes on barges shall be - correct 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? -
correct 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. - correct answer.
10 BC or higher
When assembling a lattice boom crane the top pins of the boom sections should be
inserted; - correct answer. First
Block hoisting sheaves should have a minimum pitch diameter of at least________ the
rope diameter. - correct answer. 16 times
What is the correct method of checking the brakes of crane that has been already
assembled? - correct answer. Lift the load a few inches off the ground and apply the
brakes
A long boom crane working at minimum radius and 3 degrees out of level will have a
loss of capacity by; - correct answer. 50%
Can rotation resistant rope be used with a swivel? - correct answer. If approved by
the rope's manufacture
Questions And Answers Latest Top Score.
The lattice boom is designed to take winds of up to 20 mph. from the side plus a full
rated load, plus a direct side load equal to what percent of the rated load? - correct
answer. 2%
The part of the load chart governed by stability is based on what percentage of capacity
while a crawler crane is working over the side quadrant? - correct answer. A. 75%
The most unstable working quadrant for a crawler crane is the; - correct answer.
Side
What type of capacity is listed on a crane load chart? - correct answer. Static
If the manufacture of a particular crane does not specifically permit pick and carry
operations what procedure must be followed during this operation? - correct answer.
Don't make any pick and carry lifts
What is the main purpose of a jib/extension? - correct answer. To extend reach
higher or up and over
When the number of layers of rope on a drum increase the line pull___________. -
correct answer. Decreases
When handling boom sections, the best place for slings to be attached is; - correct
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; - correct
answer. Make the crane more stable
What is the major effect of stopping suddenly a rapid swing while operating long boom
crane? - correct 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. - correct answer. 5%
, On a crawler crane ground bearing pressure is greatest where? - correct 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? - correct answer. The bottom pins ahead of the
cantilever point
Most crane manufactures require the load chart capacities must be reduced when wind
speed reaches; - correct answer. 20 mph
The definition of cantilever of a lattice boom crane is; - correct answer. The boom
suspended past the pendant connections
What chart do you use when operating a crane on a barge; - correct answer. List
chart
According to OSHA, Jibs must have a positive ________ from backwards overturning -
correct answer. Stop
Mobile cranes on barges shall be - correct 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? -
correct 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. - correct answer.
10 BC or higher
When assembling a lattice boom crane the top pins of the boom sections should be
inserted; - correct answer. First
Block hoisting sheaves should have a minimum pitch diameter of at least________ the
rope diameter. - correct answer. 16 times
What is the correct method of checking the brakes of crane that has been already
assembled? - correct answer. Lift the load a few inches off the ground and apply the
brakes
A long boom crane working at minimum radius and 3 degrees out of level will have a
loss of capacity by; - correct answer. 50%
Can rotation resistant rope be used with a swivel? - correct answer. If approved by
the rope's manufacture
