NCCCO LATTICE BOOM GENERAL
KNOWLEDGE EXAM WITH CORRECT
QUESTIONS AND ANSWERS 2025
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-ANSWERS>>>>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-ANSWERS>>>>A. 75%
The most unstable working quadrant for a crawler crane is the; - CORRECT-
ANSWERS>>>>Side
What type of capacity is listed on a crane load chart? - CORRECT-ANSWERS>>>>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-ANSWERS>>>>Don't
make any pick and carry lifts
What is the main purpose of a jib/extension? - CORRECT-ANSWERS>>>>To extend reach
higher or up and over
, When the number of layers of rope on a drum increase the line pull___________. - CORRECT-
ANSWERS>>>>Decreases
When handling boom sections, the best place for slings to be attached is; - CORRECT-
ANSWERS>>>>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-
ANSWERS>>>>Make the crane more stable
What is the major effect of stopping suddenly a rapid swing while operating long boom crane? -
CORRECT-ANSWERS>>>>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-ANSWERS>>>>5%
On a crawler crane ground bearing pressure is greatest where? - CORRECT-
ANSWERS>>>>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-ANSWERS>>>>The bottom pins ahead of the cantilever point
KNOWLEDGE EXAM WITH CORRECT
QUESTIONS AND ANSWERS 2025
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-ANSWERS>>>>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-ANSWERS>>>>A. 75%
The most unstable working quadrant for a crawler crane is the; - CORRECT-
ANSWERS>>>>Side
What type of capacity is listed on a crane load chart? - CORRECT-ANSWERS>>>>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-ANSWERS>>>>Don't
make any pick and carry lifts
What is the main purpose of a jib/extension? - CORRECT-ANSWERS>>>>To extend reach
higher or up and over
, When the number of layers of rope on a drum increase the line pull___________. - CORRECT-
ANSWERS>>>>Decreases
When handling boom sections, the best place for slings to be attached is; - CORRECT-
ANSWERS>>>>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-
ANSWERS>>>>Make the crane more stable
What is the major effect of stopping suddenly a rapid swing while operating long boom crane? -
CORRECT-ANSWERS>>>>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-ANSWERS>>>>5%
On a crawler crane ground bearing pressure is greatest where? - CORRECT-
ANSWERS>>>>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-ANSWERS>>>>The bottom pins ahead of the cantilever point
