STUDY Flashcards
Where is the best location for leveling a crane?
a. carrier
b. upperworks
c. cab
d. carbody
upperworks
When determining the gross load the best method is:
a. guess the approximate load weight and add the rigging
b. get an accurate load weight and add the rigging
c. guess the approximate load weight
d. get an accurate load weight
get an accurate load weight and add the rigging
By order of hitch strength, which is the correct answer?
a. vertical, basket, choker
b. basket, vertical, choker
c. basket, choker, vertical
d. choker, basket, vertical
basket, vertical, choker
What is the purpose of using a jib?
a. increase load radius
b. decrease load radius
c. increase height
d. decrease height
increase height
When taking a side strain on a boom, what concerns the operator most?
a. no concern
b. boom damage
c. tipping
d. sheave damage
boom damage
You should always have at least how many wraps on a hoist drum?
a. 5
b. 2
c. 3
d. 1
2
On a load chart, values above the bold line mean:
a. capacities based on tipping
b. capacities based on structural competence
c. capacities should be reduced by 20 %
d. on tire capacities
capacities based on structural competence
The primary purpose for a rooster sheave or auxiliary boom point sheave is to:
a. separate the hoist lines
b. add height to the boom
c. increase the load radius
d. decrease the load radius
separate the hoist lines
What is the proper procedure when using an insulating link or a boot near power lines?
a. be sure to maintain the correct allowable distance from the lines (OSHA)
b. you may decrease the allowable distance from the lines
c. You may decrease the allowable distance from the lines if you use a signal person
d. be sure to increase the allowable distance from the lines
be sure to maintain the correct allowable distance from the lines (OSHA)
When the number of layers of rope on a drum increase the:
a. allowable line pull decreases
b. allowable line pull increases
c. allowable line pull remains the same
allowable line pull decreases
What is the minimum allowable distance from the crane and powerlines under 50 kV?
a. 25 ft
b. 10 ft.
c. 15 ft
d. 20 ft.
10 ft.
the term upperworks or superstructure refers to the area of the crane:
a. above the turntable
b. below the turntable
c. in front of the boom
above the turntable
Side loading may be caused by:
a. starting or stopping the swing to rapidly
b. raising or lowering the load to rapidly
c. raising or lowering the boom to rapidly
d. increasing the load radius
starting or stopping the swing to rapidly
What is the best procedure to follow when underground utilities may be present?
a. set outriggers pads gently
b. contact local utility company
c. use blocking under outrigger pads
d. do not set outriggers, remain on tires
contact local utility company
Eccentric main boom tip reeving causes:
a. increased sheave wear
b. increased wire rope wear
c. twisting of the boom (IPT)
d. increased jib capacity
twisting of the boom (IPT)
How many randomly broken wires must there be to remove a running wire rope from service?
a. 12
b. 3
c. 5
d. 6
6
When lifting personnel in a man basket using 6 x 19 wire rope, the minimum safety factor is?
a. 3.5
b. 5
c. 7
d. 10
7
What is the safety factor required when using non-rotating wire rope and lifting personnel in a man basket?
a. 3.5
b. 5
c. 7
d. 10
10
Who has the responsibility for determining the correct weight of a load?
a. operator
b. owner
c. supervisor
d. surveyor
supervisor
When working near powerlines when is a signal person required?
a. when crane moves within 10 ft of powerlines
b. when crane moves within 15 ft of powerlines
c. when crane moves within a booms length of powerlines
d. when crane moves within a jibs length of powerlines
when crane moves within a booms length of powerlines
When an operator leave the crane he must first:
a. put all dogs or pawls in, but you may leave load in air
b. put the load on the ground an put all dogs or pawls in
c. put all dogs or pawls in and lower boom to the ground
put the load on the ground an put all dogs or pawls in
If replacing the hoist line wire rope on a crane, how do you determine the size of type of wire rope to use?
a. drum lagging
b. sheave size
c. measure existing wire rope
d. use manufacturers operators manual or load chart
use manufacturers operators manual or load chart
After the crane has been checked out and before crane lift operations begin the crew should:
a. have lunch
b. have a pre-lift meeting
c. check the oil in the engine
d. inspect the cab for debris
have a pre-lift meeting
According to ANSI B30.5 personnel platform lifts should not be made with wing in excess of ?
a. 30 mph
b. 10 mph
c. 15 mph
d. 20 mph
15 mph
When is it safe to work closer than the allowable distance from powerlines?
a. when crane owner says lines are de-energized
b. when site supervision says lines are de-energized
c. when utility company says lines are de-energized
d. when lead engineer says lines are deenergized
when utility company says lines are de-energized
During setup how do you determine machine clearances (counterweight, boom, outrigger)?
a. utilize the machine and see if you hit something
b. measure for correct distances
c. guess
d. load chart
measure for correct distances
When operating a crawler crane what is the most unstable allowable quadrant of operation?
a. front
b. rear
c. side
d. corner
side
when operating a truck crane what is the most unstable allowable quadrant of operation?
a. front
b. rear
c. side
d. corner
side
what is not a good location for crane setup?
a. compacted fill
b. hard fil
c. above utilities
d. concrete
above utlities
When should a tagline be used?
a. when rotation of load would be dangerous
b. when raining and load is slippery
c. when only one signal person is required
d. never
when rotation of load would be dangerous
When an operator arrives at the jobsite and the crane is already erected, how would the operator check the main and auxiliary hoist breaks?
a. check pedal for the correct feel
b. rely on the superintendent to verify the brakes are functioning properly
c. make the lift and see what happens
d. lift the load off the ground and apply the brake
lift the load off the ground and apply the brake
What is the difference between an anti-two-block warning device and and anti-two-block prevention system?
a. warning device only warns, but prevention system will stop the operation
b. prevention system only warns, but warning device stops the operation
c. both are the same
d. both will warn and stop the dangerous operation
warning device only warns, but prevention system will stop the operation
Who gives the operator hand signals?
a. the foreman
b. the superintendent
c. the person assigned prior to the lift
d. anyone who is qualified
the person assigned prior to the lift
why use mats or cribbing?
a. to lift outriggers or crawler off the ground
b. to reduce ground pressure
c. for long boom cranes
d. to stop mud from entering crawlers
to reduce ground pressure
Tripping capacities of crawler cranes are based on what percentage of tipping?
a. 70%
b. 80%
c. 85%
d. 75%
75%
Should the load be applied when determining the proper boom angle?
a. yes
b. no
c. depends on lift conditions
d. only during critical lifts
yes
when should the operator use the run by the seat of the pants technique?
a. always
b. never
c. when not making a critical lift
d. only when making a critical lift
never
Load radius is the distance from the center of gravity of the suspended load to the :
a. center of rotation
b. center of gravity of the crane
c. tipping axis
d. hook rollers
center of rotation
why is the primary reason for using a boom extension?
a. increase load radius
b. decrease load radius
c. increase height
d. increase reach
increase height
what is the minimum design factor required for a right regular lay main, boom or auxiliary hoist rope?
a. 5
b. 3.5
c. 2.5
d. 7
3.5
when telescoping the boom section of an R/R, which section should be telescoped first?
a. first
b. doesn’t matter
c. largest
d. all sections should be telescoped equally
all sections should be telescoped equally
How does the operator determine if correct load chart is being used?
a. matching serial number
b. matching model number
c. matching manufactures code number
d. same manufacture
matching serial number
net capacity is equal to:
a. gross capacity minus capacity deductions
b. net load plus gross capacity
c. capacity deductions minus gross capacity
d. net load minus gross capacity
gross capacity minus capacity deductions
If the SWL of a cranes wire rope is 10,000 lbs using one part, what is the SWL when using 4 parts?
a. 10,000 lbs
b. 20,000 lbs
c. 30,000 lbs
d. 40,000 lbs
40,000 lbs
When first arriving on the jobsite, the operator should first determine the condition of the :
a. cranes setup location
b. access roads
c. parking lot
d. headache ball
access roads
How does the operator verify the LMIs boom length or load radius reading?
a. actual measurements
b. no need to verify
c. calibrate the LMI
d. check with superintendent
actual measurements
IF the rated capacity of the crane is above the solid line or within the shaded areas or has a asterisk next to it , this means the capacity is based on:
a. 75% of structural competence
b. structural competence
c. 85% of tipping
d. tipping
structural competence
all hazards and potential problems should be discovered during the:
a. pre-lift site inspection
b. actual lift operation
c. daily safety meeting
d. coffee break
pre-lift site inspection
How many broken wires must be present in one stand of one lay for running wire rope to be removed from service?
a. 3
b. 4
c. 2
d. 6
3
in a range diagram, boom length and angle can be used to determine:
a. load weight
b. load radius
c. counterweight requirements
d. net capacity
load radius
When making a multiple crane lift it is important for the operator to understand that:
a. the weight is equally distributed at all times
b. the weight is never equally distributed
c. the weight may increase if the other crane lands the load
d. the weight may decrease if the other crane lands the load
the weight may increase if the other crane lands the load
If a crane is not setup level and the operator swings a load from the high side to the low side the load radius will :
a. decrease
b. stay the same
c. increase two feet for every one degree out of
d. increase
increase
most crane manufacturers reduce load capacity for duty-cycle operations because:
a. the maximum load is almost always known
b. dynamic loads are not encountered
c. side loading forces may occur
d. the outward swing of the load decrease the load radius
side loading forces may occur
on whos recommendations should a preventative maintenance program be setup:
a. master mechanic
b. crane operator
c. company supervisor
d. crane manufacturer
crane manufacturer
what is the standard rope used on most cranes?
a. right regular lay
b. right alternate lay
c. left regular lay
d. non-spin
right regular lay
The proper way to calibrate a boom angle indicator is:
a. use a protractor
b. boom up against the stops and set the indicator at 90 degrees
c. using a level, raise the boom to horizontal and set the indicator to 0 degrees
d. call the company’s mechanic
using a level, raise the boom to horizontal and set the indicator to 0 degrees
The red area of a instrument gauge means:
a. caution should be taken
b. machine needs maintenance
c. everything is normal
d. a dangerous condition exists
a dangerous condition exists
The best way to keep people from being injured from the counterweight of the crane is to:
a. blow the horn when swinging
b. paint counterweight with a bright orange
c. use danger signs
d. fence or barricade the swing area
fence or barricade the swing area
Only approved attachments or extra counterweights made by the manufacturer should be placed on the rear of crane because:
a. they could cause a backward stability problem
b. the crane will develop a swing problem
c. the swing clearance will increase
d. the ground pressure will increase
they could cause a backward stability problem
what is the first thing an operator should do before going under a low pipe rack?
a. put the swing lock on
b. blow the horn
c. check to see what is in the pipe
d. post a signal person to check clearance
post a signal person to check clearance
When working on outriggers, the only time they should be less than fully extended is when:
a. working along side the highway and cannot block a lane
b. you are handling light loads
c. the main boom is being lifted
d. there is a load chart for this operation
there is a load chart for this operation
When lifting loads from the water, the operator should be aware that:
a. the current can change and cause the crane to tip
b. the brakes on the crane could get wet and slip
c. a dynamic load can occur
d. the load will increase when you pick the load from the water
the load will increase when you pick the load from the water
what is required to be on a hydraulic crane in order to lift a man basket?
a. boom length indicator
b. radio communication
c. free fall capability
d. two operators
boom length indicator
when working on rubber, cranes are rated at what percentage of tipping?
a. 70
b. 75
c. 80
d. 85
75
when using cable or nylon spreaders it is important to remember:
a. the spreader angle does not affect tension
b. the lower the spreader angle the greater the tension
c. the higher the spreader angle the greater the tension
d. the lower the spreader angle the lesser the tension
the lower the spreader angle the greater the tension
Backward stability of a crane is tested with:
a. basic boom at maximum angle with maximum load
b. maximum boom at maximum angle with maximum load
c. basic boom at minimum angle with no load
d. basic boom at maximum angle with no load
basic boom at maximum angle with no load
If not listed in the load/capacity charts for a hydraulic crane and you are in between boom lengths, you should:
a. use the next longer length
b. use the next shorter length
c. use the length closest to the actual length
d. use the range diagram
use the next longer length
when a spinning load presents a danger, the operator should:
a. keep the load close to the ground
b. run load to the tip of boom
c. tell everybody to stay clear
d. use a tagline
use a tagline
the jib capacity is 8 tons and the ball weighs 900 lbs. What is the heaviest load that an be lifted safely?
a. 16,900
b. 16,000
c. 15,100
d. 15,900
15,100
parts of line means:
a. the amount of strands in the load line
b. the number of sheaves in the load block
c. the number of lines running thru the load block
d. the number of load lines on the crane
the number of lines running thru the load block
If a jib is erected but not being used, it is treated as a deduction from the cranes:
a. gross capacity
b. boom length
c. swing radius
d. net capacity
gross capacity
what is the maximum number of broken wires acceptable before replacement on a standing wire rope?
a. 2
b. 6
c. 1
d. 4
2
what are most jib capacities based on?
a. working radius
b. main boom length
c. tipping
d. structural
structural
On the majority of conventional cranes the power is transferred to the torque converter by a :
a. chain and sprocket
b. master clutch
c. bull gear
d. worm gear
master clutch
during disassembly of a long boom, the hog lines are connected at the maximum cantilever point and the boom is slightly lifted off the ground. Which pins are to be removed next?
a. the bottom pins behind the cantilever point
b. the top pons ahead of the cantilever point
c. the bottom pins ahead of the cantilever point
d. the top pins behind the cantilever point
the bottom pins ahead of the cantilever point
when using load/capacity charts, what does the term jib angle to ground refer to ?
a. main boom angle plus the jobs offset
b. the jobs offset
c. main boom angle minus the jibs offset
d. main boom plus the length of the job
main boom angle minus the jibs offset
a truck crane, with outriggers properly set, is rated at what percentage of its tipping capacity?
a. 75%
b. 90%
c. 85%
d. 100%
85%
On a truck crane with the outriggers extended and set, and tires touching the ground, the operator should refer to what load chart?
a. intermediate chart
b. over the front chart
c. on rubber chart
d. 85% of on-outrigger chart
on rubber chart
when testing a man basket how long must the test pick be maintained?
a. 2 minutes
b. 5 minutes
c. 10 minutes
d. 15 minutes
5 minutes
What is the minimum pitch diameter for load hoisting sheaves?
a. not less than 15 times rope diameter
b. not less than 16 times rope diameter
c. not less than 18 times rope diameter
d. not less than 20 times rope diameter
not less than 18 times rope diameter
what is the minimum pitch diameter for boom hoisting sheaves?
a. not less than 15 times rope diameter
b. not less than 16 times rope diameter
c. not less than 18 times rope diameter
d. not less than 20 times rope diameter
not less than 15 times rope diameter
What is the minimum pitch diameter for load block sheaves?
a. not less than 15 times rope diameter
b. not less than 16 times rope diameter
c. not less than 18 times rope diameter
d. not less than 20 times rope diameter
not less than 16 times rope diameter
Seat belts shall be provided on what cranes?
a. lattice truck cranes
b. hydraulic truck cranes
c. cherry pickers
d. lattice crawlers
cherry pickers
power is transferred to the swing through a
a. pinion gear
b. bevel gear
pinion gear
LMIs shall be installed on cranes with a lifting capacity of:
a. 3 ton and above
b. 5 ton and above
c. 10 ton and above
d. 15 ton and above
3 ton and above
when lifting personnel the cranes hook must be the type that:
a. can be closed and locked
b. have a spring loaded non-locking latch
can be closed and locked
when working over water with a man basket are the people inside required to wear a belt or harness ?
no
what is the maximum advisable wind speed for crane operation?
a. 20 mph
b. 25 mph
c. 30 mph
d. 35 mph
30 mph
When working near powerlines, where should caution stickers be installed?
a. on carrier and on the barriers
b. on barriers and on crane boom
c. at operators station and on the outside of the crane
d. at operators station and on the barriers
at operators station and on the outside of the crane
jib back lash how much ?
a. 10 degrees
b. 15 degrees
c. 5 degrees
d. 0 degrees
5 degrees
cranes must be level to within ____ % grade
a. 3
b. 2
c. 5
d. 1
1
a frequent inspection is:
a. monthly to annually
b. daily to monthly
c. hourly to daily
d. daily to weekly
daily to monthly
a periodic inspection is :
a. monthly to annually
b. daily to monthly
c. hourly to daily
d. daily to weekly
monthly to annually
test loads shall not exceed ____ of manufacturers load ratings
a. 100%
b. 110%
c. 115%
d. 120%
110%
cranes idle for more than 6 months must have ___ inspections performed
a. frequent and periodic
b. daily and weekly
c. daily
d. no inspections required
frequent and periodic
cranes idle for less than 6 months must have what type of inspection performed
a. frequent and periodic
b. periodic
c. frequent
d. no inspections required
frequent
cranes lifting personnel platforms must have a inspection performed every:
a. hour
b. day
c. week
d. month
day
crane hooks must not be twisted in excess of :
a. 10 degrees
b. 15 degrees
c. 20 degrees
d. 5 degrees
10 degrees
Crane hooks throat open must not exceed
a. 10% of its original size
b. 15% of its original size
c. 20% of its original size
d. 25% of its original size
15% of its original size
what is the jib offset?
a. jib angle to the boom
b. jib angle to the ground
c. jib angle to vertical
d. jib angle to horizontal
jib angle to the boom
The crane is out of level, you release the swing brake, the boom swings downhill, you:
a. boom angle stays the same
b. boom angle increase
c. load radius stays the same
d. load radius increase
load radius increases
Blocking can be placed under the ends of tracks to:
a. increase the cranes stability when operating over side
b. increase the crane’s stability when operating over side
c. stop crane from traveling unexpectedly
d. stop crane from sliding unexpectedly
increase the cranes stability when operating over side
What quadrant produces the least amount of ground pressure on a lattice crawler:
a. corner
b. side
c. front
d. rear
side
On lattice boom cranes fitted with power load lowering, a heavy load should be lowered by using the:
a. power load lowering feature and the foot brake
b. foot brake and slipping the converter
c. throttle of the engine
d. power load lowering feature only
power load lowering feature and the foot brake
Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major effect?
a. overheating the swing brake
b. overturning the crane or collapsing the boom
c. increased pressure on the cranes draw works
d. rope vibration
overturning the crane or collapsing the boom
When the boom handled is released to its center position, which action should be expected?
a. the boom hoist safety pawl will be automatically disengaged
b. the boom hoist will be held stationary
c. the swing brake will be automatically applied
d. the load hoist drum will freewheel until the hoist brake is engaged
the boom hoist will be held stationary
On a lattice boom crawler crane, the main boom length is measured from the:
a. bottom of the heel section to the tip f the head section
b. ground to top of head section
c. center of the boom heel pins to the center of the boom tip sheave
d. cranes center of rotation to the center of the sheave on the boom head
center of the boom heel pins to the center of the boom tip sheave
If you cant level your crawler crane:
a. dont operate crane
b. reduce capacity by 50%
c. operate only on high side
d. operate only on low side
dont operate crane
what effect does having the crawlers retracted have on a crawler crane with long boom?
a. decrease track wear
b. decrease in capacity
c. increase in capacity
d. increase track wear
decrease in capacity
if your crawler crane is on a barge, it is necessary to :
a. reduce the load chart by 50%
b. reduce the chart by 40%
c. call maritime inspector
d. secure the crane to the barge
secure the crane to the barge
A pin-connected lattice boom is being dismantled. After connecting the equalizer (bridle) to the connecting lugs on the boom, which boom connecting pins should be removed first?
a. top connection pins, located at and behind the equalizer
b. top connection pins, located at and ahead of the equalizer
c. lower connection pins, located at and ahead of the equalizer
d. lower connection pins, located at and behind the equalizer
lower connection pins, located at and ahead of the equalizer
when using a mobile crane on a barge the cranes load capacity chart shall be:
a. replaced by a list chart
b. de-rated to 50%
c. de-rated to 60%
d. replaced by a duty cycle chart.
replaced by a list chart
How many broken wires are permitted at the end connection of a pendant before it must be taken out of service?
a. 6
b. 5
c. 3
d. 1
1
if high winds are expected and the lattice boom crane must be secured pointing into the wind, then the hook should be
a. laid on the ground and boom at 50 degrees
b. hoisted to within 5ft of the boom point
c. secured to a solid structure directly below the boom point
d. attached to the cranes heel section
secured to a solid structure directly below the boom point
when assembling a lattice boom on most crawler cranes using inserts of different lengths, which insert section generally should be closest to the boom foot?
a. 40 ft
b. 30 ft
c. 20 ft
d. 10 ft
10 ft
During assembly where should you attach slings to lift boom sections?
a. main chords
b. end fittings
c. 2 ft from end of section
d. center of boom section
end fittings
which boom configuration can cause the most hazardous boom side-loading conditions?
a. short boom with minimum radius
b. long boom with minimum radius
c. short boom at a 45 degree angle
d. long boom at a 45 degree angle
long boom with minimum radius
when is it safe to handle loads under power lines?
a. if a crane is equipped with an isolated link or proximity alarm
b. the load nor any part of the crane can come closer than regulations allowed
c. if a second signal person is used
d. the boom is kept 10 ft away from the power lines
the load nor any part of the crane can come closer than regulations allowed
On a lattice boom truck crane, boom angle is measured between the centerline of the :
a. loaded boom and the horizontal
b. unloaded boom and the horizontal
c. loaded boom and the vertical
d. unloaded boom and the carrier deck
a. loaded boom and the horizontal
When lattice boom truck crane is lifting on outriggers, the floats or pads should always be
a. large enough to support two times the applied load
b. with the tires firmly on the ground
c. secured to the outriggers
d. placed on mats
secured to the outriggers
Manufacturer specifications permit only a certain amount of boom to be suspended out past the connection point of the pendants during assembly or disassembly of the boom. The portion of boom that is suspended in this way is called the
a. jib section length
b. head section length
c. cantilever length
d. butt section length
cantilever length
when lattice boom is being disassembled or shortened, it is extremely important to :
a. always be positioned inside the boom to drive out the lower pins
b. never touch any pin on any boom section located between the pendants attachment points and the crane
c. drive the top pins out from inside the boom
d. drive the bottom pins out from inside the boom
never touch any pin on any boom section located between the pendants attachment points and the crane
when installing a pin-connected lattice boom on a mobile crane you should always
a. use the boom hoist pawl to hold the boom
b. not be on outriggers during the installation
c. use the boom hoist brake to hold the boom
d. remove the pins from underneath the boom last
a. use the boom hoist pawl to hold the boom
When you change the jib to ground angle from 40 degrees to 30 degrees you have to
a. decrease the head clearance
b. increased jib gantry angle
c. shortened the forestay pendants
d. decrease the capacity of the jib
d. decrease the capacity of the jib
a lattice boom truck crane with a 120 ft boom will be operating at a 42 ft radius. The load chart shows an entry indicating 25,000 lbs at a 40 ft radius, followed immediately by an entry listing 20,000 lbs at a 45 ft radius. What is the cranes capacity at the 42 ft radius
a. 20,000 lbs
b. 22,000 lbs
c. 23,000 lbs
d. 25,000 lbs
20,000 lbs
a truck crane operating with outriggers fully extended and set, does not have a fifth front outrigger, the operator should
a. use higher boom angles over the front
b. refer to the manufacturers working area diagram
c. block under the bumper to provide more stability
d. only operate over the front at a 50 degree reduction of the load chart
b. refer to the manufacturers working area diagram
a crane that climbs a 7% grade, on mile hill, should descend down the hill in:
a. either sixth or seventh gear
b. either fourth or fifth gear
c. any gear as long as the cranes brakes are working properly
d. any gear since power is not required for the descent
b. either fourth or fifth gear
a lattice boom truck crane, when setup out of level will lose the most capacity with?
a. short boom; long radius
b. long boom; long radius
c. long boom; short radius
d. short boom; short radius
c. long boom; short radius
The device that automatically stops the boom when it nears the maximum angle is the:
a. boom hoist kick-out
b. boom back stop
c. mechanical boom stop
d. boom hoist pawl
boom hoist kick-out
when a lattice boom truck crane is operating on properly set outriggers, the tipping axis is located at the :
a. radius of the counterweights
b. center pin of the crane
c. boom heel pins
d. point where the outriggers touch the ground
d. point where the outriggers touch the ground
The purpose of placing mats or cribbing under outrigger floats is to
a. get the tires off the ground
b. distribute the downward force of the float over a larger area
c. allow the float to be level
d. raise the operators cab for better vision
b. distribute the downward force of the float over a larger area
a crane loses stability when its leverage on the load is:
a. less than the loads leverage on the crane
b. 70% of the loads leverage on the crane
c. 80% of the loads leverage on the crane
d. more than the loads leverage on the crane
a. less than the loads leverage on the crane
If a lattice boom truck crane is going to perform work over the front it must have:
a. a second signal person
b. short boom requirements
c. a front mounted counterweight
d. a front mounted outrigger
d. a front mounted outrigger
Each outrigger pad and its blocking should be sufficient to support:
a. 85% of the load chart
b. the total weight of the crane and its load
c. the total weight of the crane and its long boom
d. one-half the total weight of the crane and its load
b. the total weight of the crane and its load
How does high wind affect the setup of a crane with a long boom?
a. decreases load line capacity
b. requires you to slip the swing break
c. introduces side load onto the boom
d. has no effect on overall crane capacity
c. introduces side load onto the boom
When a lattice boom truck crane that is properly set up with no front outrigger and the boom is positioned over the front, the combined center of gravity of the carrier and upperworks will move:
a. further from the axis
b. closer to the axis
c. on top of the axis
d. to the middle of the axis
b. closer to the axis
when personnel platforms are lifted with a telescopic crane
a. a two block damage prevention system is to be provided
b. a load moment indicator is provided
c. a emergency free fall button is provided
d. a dedicatee signal person will inspect eh crane
a. a two block damage prevention system is to be provided
what item can be removed from a carrydeck crane?
a. fire extinguisher
b. load chart
c. anti-two-block device
d. boom extension
boom extension
the lever on the far left of most hydraulic cranes is
a. boom down
b. boom extended
c. boom up
d. boom swing
boom swing
A telescopic crane is equipped with an anti-two-block lockout device, when the device is activated which functions should be disabled?
a. hoist up, extend out, and lower the boom
b. hoist up, retract the boom, and swing
c. hoist down, boom up and retract the boom
d. swing, hoist up and raise the boom
a. hoist up, extend out, and lower the boom
when transporting a load on the deck of a carrydeck crane, the operator should
a. secure the load with the crane boom
b. travel with the outriggers partially extended
c. center the load on the front deck
d. post a signal person in front of the crane
c. center the load on the front deck
Jib capacities are based on
a. structural strength
b. main boom length
c. radius
d. stability
a. structural strength
When making a lift on outriggers, the maximum ground bearing pressure occurs
a. over the rear
b. over the corner
c. over the front
d. over the side
over the corner
A cranes jib is offset 15 degrees versus its original 0 degree offset, but the boom angle remains unchanged. In this situation the load radius:
a. increases
b. remains the same
c. decreases
d. cannot be determiend
increases
blocking which is not tightly placed may fail at:
a. 25% of the design
b. 30% of the design
c. 50% of the design
d. 80% of the design
c. 50% of the design
If the jib is offset, the crane’s capacity will:
a. be increase
b. be reduced
c. not change
d. not change because the jib cannot be offset
be reduced
the safest speed for a crane carrying a load is:
a. the manufacturers speed limit
b. the job sites speed limit
c. the speed recommended by the superintendent
d. the speed recommended by the oiler
a. the manufacturers speed limit
The boom angle indicator indicates:
a. gross capacity
b. angle of boom to horizontal
c. angle of boom to vertical
d. net capacity
b. angle of boom to horizontal
When performing a pick and carry lift with a rough terrain hydraulic crane, which of the following is the most important consideration?
a. ensuring that at least two hand-held tag lines are used
b. moving away from the load to avoid load contact with the crane
c. keeping the boom as low as possible with the load close to the ground
d. keeping the load above the eye level for visibility
c. keeping the boom as low as possible with the load close to the ground
In setting up the crane, the operator can extend three outriggers fully and one only halfway out, but all vertical cylinders are down and floats are on good supports. The operator must:
a. cease crane operation until all outriggers are fully extended
b. reduce crane capacity by 25%
c. use the “on rubber” load chart
d. not use the quadrant where the outrigger is not fully extended
c. use the “on rubber” load chart
jib offset is the jib angle to the
a. ground
b. vertical
c. horizontal
d. boom
boom
all hazards and problems that are found on the worksite should be identified
a. at the preoperational worksite inspection
b. by the super before the crane arrives
c. by the foreman while the crane is being setup
d. at the next tailgate safety talk
a. at the preoperational worksite inspection
Which of the following OSHA regulations govern suspended personnel platforms
a. OSHA 1910.180 (h)
b. OSHA 1926.550 (g)
c. OSHA 1934.235 (a)
d. OSHA 1926.106 (f)
b. OSHA 1926.550 (g)
According to ASME B30.5 the prohibited zone for power lines that are 60 kV is
a. 10 ft
b. 12 ft
c. 15 ft
d. 20 ft
15 ft
what percentage of the gross capacity is used when lifting with more than one crane?
a. 85%
b. 75%
c. 50%
d. 90%
75%
You are required to pass a physical exam every __ years according to ASME B30.5
a. 1
b. 2
c. 3
d. 4
3
How many broken wire at an end socket of a standing wire rope are allowed BEFORE the wire rope must be replaced
a. 1
b. 2
c. 3
d. 4
1
when operating a mobile crane, you inspect your running wire rope at least
a. daily
b. weekly
c. monthly
d. yearly
daily
when lifting a load with more than one crane it is important to
a. use only cranes from the same manufacturer
b. use only cranes with the same rated capacity
c. keep the working radius of both cranes the same
d. keep the hoist lines of both crane vertical
d. keep the hoist lines of both crane vertical
Rotation resistant wire rope has a design factor of :
a. 2.5 to 1
b. 3 to 1
c. 3.5 to 1
d. 5 to 1
5 to 1
line pull is
a. the amount of weight a drum will hoist for a given layer
b. the amount of weight required to pull the line off a drum
c. the amount of tension required to initially install rope on a drum
d. the amount of wire rope necessary to fil a drum
a. the amount of weight a drum will hoist for a given layer
boom length is:
a. center of the foot pins to the center of the head sheave pins
b. end of the heel section to the tip of the sheaves
c. center of the heel section to the center of the head section
d. tip of the head section to the ground
a. center of the foot pins to the center of the head sheave pins
the weight of the stowed jib is used in the load calculation is
a. actual weight
b. non deduction weight
c. effective weight
d. non effective weight
c. effective weight
a cranes rated capacity is based upon
a. structural and stability
b. structural and load capacities
c. tipping and radius
d. stability and boom angle
a. structural and stability
when lifting a suspended personnel platform the safety factor for the rigging hardware is:
a. 2 times the intended load
b. 5 times the intended load
c. 7 times the intended load
d. 10 times the intended load
b. 5 times the intended load
If using cranes of different rated capacities the crane with the larger rated capacity:
a. should to hooked an equal distance from the loads center of gravity
b. should to hooked with a distance closer to the loads center of gravity
c. should to hooked at the loads center of gravity
d. should to hooked a distance farther from the loads center of gravity
b. should to hooked with a distance closer to the loads center of gravity
Hoist ropes that are not rotation resistant must have a design factor of
a. 2 to 1
b. 3 to 1
c. 3.5 to 1
d. 5 to 1
c. 3.5 to 1
