QUESTIONS AND VERIFIED ANSWERS|GRADED A+|PASS ON FIRST
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 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 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
What is the main purpose of a jib/extension? - ANSWER To extend reach higher or up and
over
If the manufacture of a particular crane does not specifically permit pick and carry opera-
tions what procedure must be followed during this operation? - ANSWER Don't make any
pick and carry lifts
When the number of layers of rope on a drum increase the line pull___________. - AN-
SWER 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
1
, 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 cor-
ner
During disassembly of a long boom, the pendant lines are connected at the maximum canti-
lever 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
The definition of cantilever of a lattice boom crane is; - ANSWER The boom suspended
past the pendant connections
Most crane manufactures require the load chart capacities must be reduced when wind
speed reaches; - ANSWER 20 mph
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 - AN-
SWER 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? - AN-
SWER 2 feet
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 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 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
What is the main purpose of a jib/extension? - ANSWER To extend reach higher or up and
over
If the manufacture of a particular crane does not specifically permit pick and carry opera-
tions what procedure must be followed during this operation? - ANSWER Don't make any
pick and carry lifts
When the number of layers of rope on a drum increase the line pull___________. - AN-
SWER 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
1
, 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 cor-
ner
During disassembly of a long boom, the pendant lines are connected at the maximum canti-
lever 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
The definition of cantilever of a lattice boom crane is; - ANSWER The boom suspended
past the pendant connections
Most crane manufactures require the load chart capacities must be reduced when wind
speed reaches; - ANSWER 20 mph
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 - AN-
SWER 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? - AN-
SWER 2 feet
2
