NCCCO Lattice Boom General Knowledge Exam Newest 200+ Questions and
Answers 2026
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? - ANSWER2%
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? -
ANSWERA. 75%
The most unstable working quadrant for a crawler crane is the; - ANSWERSide
What type of capacity is listed on a crane load chart? - ANSWERStatic
If the manufacture of a particular crane does not specifically permit pick and
carry operations what procedure must be followed during this operation? -
ANSWERDon't make any pick and carry lifts
What is the main purpose of a jib/extension? - ANSWERTo extend reach
higher or up and over
When the number of layers of rope on a drum increase the line
pull___________. - ANSWERDecreases
, When handling boom sections, the best place for slings to be attached is; -
ANSWERAt the pin connections at the ends of the top chords
Placing timber blocking under the tips of the tracks on a crawler crane will; -
ANSWERMake the crane more stable
What is the major effect of stopping suddenly a rapid swing while operating
long boom crane? - ANSWERAction 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. - ANSWER5%
On a crawler crane ground bearing pressure is greatest where? -
ANSWEROver 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? - ANSWERThe bottom
pins ahead of the cantilever point
Most crane manufactures require the load chart capacities must be reduced
when wind speed reaches; - ANSWER20 mph
The definition of cantilever of a lattice boom crane is; - ANSWERThe boom
suspended past the pendant connections
Answers 2026
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? - ANSWER2%
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? -
ANSWERA. 75%
The most unstable working quadrant for a crawler crane is the; - ANSWERSide
What type of capacity is listed on a crane load chart? - ANSWERStatic
If the manufacture of a particular crane does not specifically permit pick and
carry operations what procedure must be followed during this operation? -
ANSWERDon't make any pick and carry lifts
What is the main purpose of a jib/extension? - ANSWERTo extend reach
higher or up and over
When the number of layers of rope on a drum increase the line
pull___________. - ANSWERDecreases
, When handling boom sections, the best place for slings to be attached is; -
ANSWERAt the pin connections at the ends of the top chords
Placing timber blocking under the tips of the tracks on a crawler crane will; -
ANSWERMake the crane more stable
What is the major effect of stopping suddenly a rapid swing while operating
long boom crane? - ANSWERAction 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. - ANSWER5%
On a crawler crane ground bearing pressure is greatest where? -
ANSWEROver 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? - ANSWERThe bottom
pins ahead of the cantilever point
Most crane manufactures require the load chart capacities must be reduced
when wind speed reaches; - ANSWER20 mph
The definition of cantilever of a lattice boom crane is; - ANSWERThe boom
suspended past the pendant connections
