NCCCO Lattice Boom General Knowledge Exam Latest 2024 Update
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NCCCO Lattice Boom General Knowledge
Institution
NCCCO Lattice Boom General Knowledge
NCCCO Lattice Boom General Knowledge Exam Latest
2024 Update
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? -
ANSWER>>2%
The part of the load chart governed by stability is...
NCCCO Lattice Boom General Knowledge Exam Latest
2024 Update
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? -
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? - ANSWER>>A. 75%
The most unstable working quadrant for a crawler crane is the; - ANSWER>>Side
What type of capacity is listed on a crane load chart? - 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? - ANSWER>>Don't
make any pick and carry lifts
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
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