NCCCO Lattice Boom General Knowledge 2025-
2026 Most Recent Version Comprehensive 60
Questions and Verified Answers Accurate
Solutions Already Graded A+ Get it 100% Correct
A long boom crane working at minimum radius and 3 degrees out of level will have a
loss of capacity by; - CORRECT ANSWER: 50%
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
According to ASME B30.5 Mobile Crane Standard, in rotation resistant rope, how many
randomly distributed broken wires is caused for consideration for replacement of the
rope? - CORRECT ANSWER: Two broken wires in six rope diameters
According to B30.10 hooks shall be removed from service when the throat opening
exceeds _____ the original throat opening. - CORRECT ANSWER: 5%
According to OSHA 1926.1412, how often should all running ropes in service be visually
inspected ___________ and in accordance with ____________. - CORRECT
ANSWER: Each shift, 1926.1413(a)
According to OSHA, Jibs must have a positive ________ from backwards overturning -
CORRECT ANSWER: Stop
Backward stability of a crane is tested with the crane configured; - CORRECT
ANSWER: Basic boom at maximum angle with no load
, Block hoisting sheaves should have a minimum pitch diameter of at least________ the
rope diameter. - CORRECT ANSWER: 16 times
Boom hoisting sheaves shall have pitch diameter of not less than ____ the nominal
diameter of the rope used. - CORRECT ANSWER: 15 times
Boom length is defined as? - CORRECT ANSWER: Center of the boom attachment pin
(heel pin, foot pin, pivot pin), to the center of the boom tip sheaves
Can rotation resistant rope be used with a swivel? - CORRECT ANSWER: If approved
by the rope's manufacture
D to d ratio means what? - CORRECT ANSWER: Sheave diameter or Pitch diameter
divided by wire rope diameter
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
How far can a freely suspended lattice boom be erected beyond the pendant
connections? - CORRECT ANSWER: Varies by manufacture
How many broken wires must be present in one strand of one lay for running wire rope
to be removed from service? - CORRECT ANSWER: 3
How many randomly broken wires must there be to remove a running wire rope from
service? - CORRECT ANSWER: 6
2026 Most Recent Version Comprehensive 60
Questions and Verified Answers Accurate
Solutions Already Graded A+ Get it 100% Correct
A long boom crane working at minimum radius and 3 degrees out of level will have a
loss of capacity by; - CORRECT ANSWER: 50%
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
According to ASME B30.5 Mobile Crane Standard, in rotation resistant rope, how many
randomly distributed broken wires is caused for consideration for replacement of the
rope? - CORRECT ANSWER: Two broken wires in six rope diameters
According to B30.10 hooks shall be removed from service when the throat opening
exceeds _____ the original throat opening. - CORRECT ANSWER: 5%
According to OSHA 1926.1412, how often should all running ropes in service be visually
inspected ___________ and in accordance with ____________. - CORRECT
ANSWER: Each shift, 1926.1413(a)
According to OSHA, Jibs must have a positive ________ from backwards overturning -
CORRECT ANSWER: Stop
Backward stability of a crane is tested with the crane configured; - CORRECT
ANSWER: Basic boom at maximum angle with no load
, Block hoisting sheaves should have a minimum pitch diameter of at least________ the
rope diameter. - CORRECT ANSWER: 16 times
Boom hoisting sheaves shall have pitch diameter of not less than ____ the nominal
diameter of the rope used. - CORRECT ANSWER: 15 times
Boom length is defined as? - CORRECT ANSWER: Center of the boom attachment pin
(heel pin, foot pin, pivot pin), to the center of the boom tip sheaves
Can rotation resistant rope be used with a swivel? - CORRECT ANSWER: If approved
by the rope's manufacture
D to d ratio means what? - CORRECT ANSWER: Sheave diameter or Pitch diameter
divided by wire rope diameter
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
How far can a freely suspended lattice boom be erected beyond the pendant
connections? - CORRECT ANSWER: Varies by manufacture
How many broken wires must be present in one strand of one lay for running wire rope
to be removed from service? - CORRECT ANSWER: 3
How many randomly broken wires must there be to remove a running wire rope from
service? - CORRECT ANSWER: 6
