NICCCO LATTICE BOOM GENERAL
KNOWLEDGE EXAM/ NICCCO LATTICE
BOOM GENERAL KNOWLEDGE EXAM
PREPARATION 2025/2026 WITH ACTUAL
CORRECT QUESTIONS AND VERIFIED
DETAILED ANSWERS |FREQUENTLY TESTED
QUESTIONS AND SOLUTIONS|ALREADY
GRADED A+|NEWEST|BRAND NEW
VERSION!!|GUARANTEED PASS
The definition of a lay length of a wire rope is;
The length along the rope in which on strand makes a complete revolution around the rope.
Boom hoisting sheaves shall have pitch diameter of not less than ____ the nominal diameter of
the rope used.
15 times
Load- hoisting sheaves shall have a pitch diameter not less than _______ the nominal diameter
of the rope used.
18 times
When rotation resistant ropes are used in boom hoisting reeving systems, sheaves used shall
have a rope pitch diameter of not less than?
18 times
Load capacity charts for crawler cranes are based on which percentage of tipping capacities?
75%
The additional load that occurs when a crane experiences sudden starts and stops is known as
what?
Dynamic loading
What is a luffing jib?
1|Page
,A jib that can change radius and angles independent of the main boom
When a lattice crane is in a Tower configuration and the crane has a variable position gantry, the
gantry should be in which position?
In the full up position
How far can a freely suspended lattice boom be erected beyond the pendant connections?
Varies by manufacture
The tipping axis of a crawler crane;
Depends if the idler or sprocket are in line or offset from the track rollers.
Lattice boom cranes manufactured after 2-28-92 must have which safety device installed?
Anti-two block warning device
Lattice boom cranes manufactured after 11-8-2011 must have which safety device installed
Anti-two block prevention device
If you move a crawler crane from soft ground to hard ground, ground bearing pressure will;
Increase
What is the minimum design factor required for a pendants or standing ropes shall not be less
than?
3.0
Live or running ropes used in boom erection conditions the design factor shall not be less than?
3.0
Standing ropes or pendant lines used in boom erection conditions the design factor shall not be
less than?
2.5
D to d ratio means what?
Sheave diameter or Pitch diameter divided by wire rope diameter
What is the meaning of Controlled load lowering?
Use of a mechanical hoist drum device that allows a hoisted load to be lowered with maximum
control using the gear train or hydraulic components of the hoist mechanism.
2|Page
,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?
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?
A. 75%
The most unstable working quadrant for a crawler crane is the;
Side
What type of capacity is listed on a crane load chart?
Static
If the manufacture of a particular crane does not specifically permit pick and carry operations
what procedure must be followed during this operation?
Don't make any pick and carry lifts
What is the main purpose of a jib/extension?
To extend reach higher or up and over
When the number of layers of rope on a drum increase the line pull___________.
Decreases
When handling boom sections, the best place for slings to be attached is;
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;
Make the crane more stable
What is the major effect of stopping suddenly a rapid swing while operating long boom crane?
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.
5%
On a crawler crane ground bearing pressure is greatest where?
3|Page
, 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?
The bottom pins ahead of the cantilever point
Most crane manufactures require the load chart capacities must be reduced when wind speed
reaches;
20 mph
The definition of cantilever of a lattice boom crane is;
The boom suspended past the pendant connections
What chart do you use when operating a crane on a barge;
List chart
According to OSHA, Jibs must have a positive ________ from backwards overturning
Stop
Mobile cranes on barges shall be
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?
2 feet
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.
10 BC or higher
When assembling a lattice boom crane the top pins of the boom sections should be inserted;
First
Block hoisting sheaves should have a minimum pitch diameter of at least________ the rope
diameter.
16 times
What is the correct method of checking the brakes of crane that has been already assembled?
4|Page
KNOWLEDGE EXAM/ NICCCO LATTICE
BOOM GENERAL KNOWLEDGE EXAM
PREPARATION 2025/2026 WITH ACTUAL
CORRECT QUESTIONS AND VERIFIED
DETAILED ANSWERS |FREQUENTLY TESTED
QUESTIONS AND SOLUTIONS|ALREADY
GRADED A+|NEWEST|BRAND NEW
VERSION!!|GUARANTEED PASS
The definition of a lay length of a wire rope is;
The length along the rope in which on strand makes a complete revolution around the rope.
Boom hoisting sheaves shall have pitch diameter of not less than ____ the nominal diameter of
the rope used.
15 times
Load- hoisting sheaves shall have a pitch diameter not less than _______ the nominal diameter
of the rope used.
18 times
When rotation resistant ropes are used in boom hoisting reeving systems, sheaves used shall
have a rope pitch diameter of not less than?
18 times
Load capacity charts for crawler cranes are based on which percentage of tipping capacities?
75%
The additional load that occurs when a crane experiences sudden starts and stops is known as
what?
Dynamic loading
What is a luffing jib?
1|Page
,A jib that can change radius and angles independent of the main boom
When a lattice crane is in a Tower configuration and the crane has a variable position gantry, the
gantry should be in which position?
In the full up position
How far can a freely suspended lattice boom be erected beyond the pendant connections?
Varies by manufacture
The tipping axis of a crawler crane;
Depends if the idler or sprocket are in line or offset from the track rollers.
Lattice boom cranes manufactured after 2-28-92 must have which safety device installed?
Anti-two block warning device
Lattice boom cranes manufactured after 11-8-2011 must have which safety device installed
Anti-two block prevention device
If you move a crawler crane from soft ground to hard ground, ground bearing pressure will;
Increase
What is the minimum design factor required for a pendants or standing ropes shall not be less
than?
3.0
Live or running ropes used in boom erection conditions the design factor shall not be less than?
3.0
Standing ropes or pendant lines used in boom erection conditions the design factor shall not be
less than?
2.5
D to d ratio means what?
Sheave diameter or Pitch diameter divided by wire rope diameter
What is the meaning of Controlled load lowering?
Use of a mechanical hoist drum device that allows a hoisted load to be lowered with maximum
control using the gear train or hydraulic components of the hoist mechanism.
2|Page
,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?
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?
A. 75%
The most unstable working quadrant for a crawler crane is the;
Side
What type of capacity is listed on a crane load chart?
Static
If the manufacture of a particular crane does not specifically permit pick and carry operations
what procedure must be followed during this operation?
Don't make any pick and carry lifts
What is the main purpose of a jib/extension?
To extend reach higher or up and over
When the number of layers of rope on a drum increase the line pull___________.
Decreases
When handling boom sections, the best place for slings to be attached is;
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;
Make the crane more stable
What is the major effect of stopping suddenly a rapid swing while operating long boom crane?
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.
5%
On a crawler crane ground bearing pressure is greatest where?
3|Page
, 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?
The bottom pins ahead of the cantilever point
Most crane manufactures require the load chart capacities must be reduced when wind speed
reaches;
20 mph
The definition of cantilever of a lattice boom crane is;
The boom suspended past the pendant connections
What chart do you use when operating a crane on a barge;
List chart
According to OSHA, Jibs must have a positive ________ from backwards overturning
Stop
Mobile cranes on barges shall be
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?
2 feet
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.
10 BC or higher
When assembling a lattice boom crane the top pins of the boom sections should be inserted;
First
Block hoisting sheaves should have a minimum pitch diameter of at least________ the rope
diameter.
16 times
What is the correct method of checking the brakes of crane that has been already assembled?
4|Page
