Term
Determine if this statement is true or false. As crane signaling is only a basic function and the signalperson knows where the loads will be positioned, training or testing of the signalperson should not be required.
True or False |
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Definition
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Term
When using hand signals to direct a crane operator, an extended arm with the thumb vertical and the fingers opening and closing into a fist indicates:
A: lower load
B: raise boom and lower load
C: raise the load line
D: extend boom |
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Definition
| B: raise boom and lower load |
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Term
Two closed fists with both thumbs pointing toward each other is the signal for:
A: retract hydraulic boom
B: extend boom
C: retract middle section of boom only
D: secure load in position |
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Definition
| A: retract hydraulic boom |
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Term
Which of the following is not a permitted use of an "operational aid"?
A: warn of approaching two-block condition
B: indicates changing boom angle
C: warns of approaching crane overload
D: used to test weigh a load prior to hoisting |
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Definition
| D: used to test weigh a load prior to hoisting |
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Term
Determine if this statement is true or false. Any crane component can be used on any other crane made by the same company
True or False |
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Definition
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Term
A rough terrain crane is commonly referred to as:
A: mobile crane
B: crawler crane
C: carrier crane
D: cherry picker |
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Definition
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Term
Which of these conditions could be dangerous when operating a crane around a newly constructed building?
A: height of structure
B: uncompacted soil
C: protected pedways
D: compacted soil |
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Definition
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Term
When hoisting on outriggers with a permitted 360 degree swing, which position is the most hazardous in most conditions?
A: over front
B: over rear
C; over side
D: over corner |
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Definition
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Term
Determine if this statement is true or false. The ground pressure under outriggers is higher than it is under a crawler track because of a smaller bearing surface.
True or False |
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Definition
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Term
An outrigger float should be approximately how much larger than the outrigger pad?
A: same
B: 1.5 times
C: 2 times
D: 3 times |
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Definition
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Term
When setting up a crawler crane for use on a new site, which of the following is not required prior to use?
A: operator manual
B: inspected components
C: crane logbook
D: name of the person who will operate the crane |
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Definition
| D: name of the person who will operate the crane |
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Term
Where should the slings be attached when lifting lattice boom sections?
A: use the end connections
B: choke at mid-point of the main chords
C: to the chord lacings
D: depends on boom length |
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Definition
| A: use the end connections |
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Term
During crane assembly, the counterweight is mounted after the installation of the complete boom.
True or False |
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Definition
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Term
When assembling lattice boom sections, which set of pins are installed first?
A: left side
B: right side
C: both lower
D: both upper |
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Definition
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Term
When installing the boom pins, the pin should be pointing:
A: out away from boom center
B: in toward boom center |
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Definition
| A: out away from boom center |
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Term
When dismantling a lattice boom, which boom pins should be removed first?
A: left side
B: right side
C: both lower
D: both upper |
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Definition
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Term
It is safe to climb under a boom to knock out the boom pins if the crane has tension on the pendant lines.
True or False |
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Definition
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Term
What important step must be followed when welding a damaged crane boom?
A: follow manufacturers welding procedure
B: have a welder certified to the correct welding procedure
C: use correct welding rods and heat treatment
D: All of the above |
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Definition
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Term
What position should the gantry of a crane be in when lifting a load?
A: highest position
B: third position
C: mid position
D: lowest position |
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Definition
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Term
Jib forestay and backstay pendant lines should be:
A: of equal length, or the forestay pendant lines should be longer
B: of equal length, or the backstay pendant lines should be longer |
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Definition
| B: of equal length, or the backstay pendant lines should be longer |
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Term
Jib capacity "increases" as the angle to the ground decreases.
True or False |
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Definition
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Term
On most cranes the jib hoist and boom hoist can be safely operated simultaneously.
True or False |
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Definition
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|
Term
Which of the following is an auxiliary boom, or an extension of the main boom?
A: gantry
B: mast
C: jib
D: all of the above |
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Definition
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Term
All wire rope on a crane (hoist lines, boom hoist lines, pendant lines, etc) have a standardized design (safety) factor of:
A: 2.5 to 1
B: 3 to 1
C: 3.5 to 1
D: will vary depending on the crane and the application |
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Definition
| D: will vary depending on the crane and the application |
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Term
To avoid torsional loading, the boom tip sheaves should be reeved:
A: non-symmetrical
B: symmetrical
C: with an even number of line parts
D: with an uneven number of line parts |
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Definition
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Term
When determining whether a crane is level, percentage of grade and degree measurement is the same.
True or False |
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Definition
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Term
How much out of level, in inches, is a crane with a 48 inch rotation ring that is 1% off-level?
A: almost 5 inches
B: almost one-half inch
C: almost one-eigth inch
D: too small to measure |
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Definition
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Term
A crane sitting 3 degrees off-level with a long boom at minimum radius, can have an increase in boom stress of approximately 50%.
True or False |
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Definition
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Term
The load line is hanging plumb when positioned over the rear. When positioned over the side, the load line is observed to be off center. this means it is:
A: safe to lift over the rear
B: safe to lift over the corner
C: safe to lift over the side
D: not safe to lift until level in all positions |
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Definition
| D: not safe to lift until level in all positions |
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|
Term
Crane stability is based on:
A: lever principle
B: ability of crane hoist to lift load
C: load measurements
D: height of lift |
|
Definition
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Term
The crane center of gravity will vary the most while swinging from rear to side to front with which type of machine?
A: crawler cranes
B: truck cranes
C: cherry pickers
D: same with all types |
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Definition
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Term
Hoisting with a crane is performed only on rubber or with outriggers fully extended unless it is designed for an intermediate outrigger position and has a matching chart.
True or False |
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Definition
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|
Term
Computerized Load Moment Indicators warn the operator of an overload condition.
True or False |
|
Definition
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Term
Use of Computerized Load Moment Indicators is a quick, easy method of checking a load weight that is approved by crane manufacturers and safety regulations.
True or False |
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Definition
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Term
What determines crane capacity?
A: machine weight
B: stability
C: strength of components
D: all of the above |
|
Definition
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|
Term
Load dimensions could have as much bearing on boom radius as the load weight.
True or False |
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Definition
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Term
Deflection of the boom and pendant stretch will increase:
A: load radius
B: weight of boom
C: load weight
D: crane stability |
|
Definition
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Term
A crane that has been overloaded, resulting in structural failure, will always have the breakage show immediately.
True or False |
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Definition
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Term
When raising a long boom up off the ground, what will avoid excessive pendant pull and boom compression?
A: keep main block on ground while raising the boom
B: use a second crane to raise the boom
C: all of the above |
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Definition
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|
Term
The approved swing working areas of a crane are referred to as quadrants of operation.
True or False |
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Definition
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|
Term
The effective weight of a jib is:
A: higher than the actual weight
B: lower than the actual weight
C: same as actual weight
D: depends on crane, could be any of the above |
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Definition
| D: depends on crane, could be any of the above |
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Term
When using the main load line with the jib attached, the working load for the boom must be reduced by:
A: weight of jib attachments
B: weight of jib pendants
C: weight of jib
D: manufacturer's specifications for jib and hook weight reduction |
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Definition
| D: manufacturer's specifications for jib and hook weight reduction |
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|
Term
What are the safe load weight numbers given in a crane load chart?
A: net capacity
B: net load minus rigging
C: gross load minus rigging
D: gross load |
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Definition
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Term
When hoisting, a sudden start or stop produces a:
A: static load
B: dynamic load |
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Definition
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Term
Specific details on calculating the weight of crane components to set up for a safe lift are found in:
A: operators manual
B: rigging handbook
C: load chart data
D: all of the above |
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Definition
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Term
A method of determining when a crane is nearing overload is to watch for the outriggers to slightly lift off the floats (the first sign of tipping).
True or False |
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Definition
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|
Term
A crane that "goes light" is not yet overloaded, and can be safely returned to normal by rapid load lowering.
True or False |
|
Definition
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|
Term
The quadrant of operation is shown on most mobile crane load charts.
True or False |
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Definition
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|
Term
On load charts with the upper and lower numbers divided, the upper numbers are in the range that mean the crane will do what if it is overloaded?
A: tip
B: structurally fail
C: cannot lift the load
D: none of the above |
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Definition
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Term
When using crane load charts, it is not permitted to guess or calculate in-between values.
True or False |
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Definition
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|
Term
Boom angle is the measured angle between ___________
and the centerline of the boom.
A: vertical
B: horizontal |
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Definition
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Term
If the measured radius between crane rotation point and load center is 57 feet, and the load chart only shows values at 55 feet and 60 feet, which value would be used?
A: 55 feet
B: 60 feet
C: must consider boom length
D: depends on load weight |
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Definition
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Term
Using the range diagram on page 313, determine the approximate load radius under the jib tip ( at the offset shown) and maximum boom extension at a 60* angle.
A: 44 feet
B: 60 feet
C: 77 feet
D: 85 feet |
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Definition
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|
Term
|
Definition
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|
Term
The Crane is always set up to specification, therefore the load chart does not have to be used to determine the required number of parts of line in the main load block to lift a load.
True or False |
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Definition
|
|
Term
In general terms, everything below the boom tip is considered load.
True or False |
|
Definition
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|
Term
What load chart weight term defines the main block rigging hardware, the actual load, and any attached jib and jib hook?
A: gross load
B: net load |
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Definition
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|
Term
The weight of a load being lifted by two cranes in tandem is only 50% of the lifting capacity of either crane. Therefore it is not a critical lift and does not require a lift plan.
True or False |
|
Definition
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|
Term
For tandem crane lifts, the shared load reduces the need for the cranes to be exactly level.
True or False |
|
Definition
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|
Term
On a tandem lift, it is necessary for both cranes to lift the load off the ground simultaneously.
True or False |
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Definition
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|
Term
Which of these conditions will dramatically affect the values illustrated on load charts?
A: Improper outrigger set up
B: changing radius
C: wind
D: all of the above |
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Definition
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|
Term
After a load is off the ground and the boom starts to swing, the actual swing rate of speed will never have any bearing on the conditions affecting the crane.
True or False |
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Definition
|
|
Term
Which of these weather conditions is more likely to restrict or completely stop hoisting activities?
A: wind gusts
B: light breeze
C: light rain
D: light snow |
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Definition
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Term
When a crane is traveling with a load, whenever possible the load should be:
A: Tied off, low to ground, and close to carrier
B: low to ground and far out
C: as high as possible without hitting boom
D: always carried over the rear |
|
Definition
| A: Tied off, low to ground, and close to carrier |
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Term
When a hydraulic boom is not extended with equal section lengths, the effect is:
A: damage the hydraulic system
B: overload the longest section
C: equal extension does not matter |
|
Definition
| B: overload the longest section |
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|
Term
It is permissible to let the boom of a crane rest on the edge of a building while lowering a load onto the roof.
True or False |
|
Definition
|
|
Term
As long as another person is on watch, it is permissible to hoist personnel in a basket when the anti two-block device is not working.
True or False |
|
Definition
|
|
Term
Even with high voltage power lines, it is not possible to have an electrical accident unless the crane or load actually hits the line.
True or False |
|
Definition
|
|
Term
A signalperson must be used if a crane can swing within the limit of approach of a power transmission line.
True or False |
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Definition
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|
Term
The operator should always jump out of the cab as quickly as possible if the crane makes contact with a power line.
True or False |
|
Definition
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|
Term
It is not necessary for an equipment operator to check the recent log book entries before commencing operation as that is the responsibility of the supervisor.
True or False |
|
Definition
|
|
Term
Who is responsible to sign and date the crane log book when it is inspected?
A: operator
B: signalperson
C: mechanic
D: inspector |
|
Definition
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|
Term
It is safe to reach through the openings of a hydraulic boom if the machine is not running.
True or False |
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Definition
|
|
Term
It is always safe to remove the hydraulic reservoir filler cap to check the level immediately after the machine is stopped.
True or False |
|
Definition
|
|
Term
The crane operating control positions are not regulated and every crane manufacturer locates the controls in relation to each other differently.
True or False |
|
Definition
|
|
Term
If the boom swing lever is pushed forward, the boom will:
A: swing left
B: swing right
C: could be either, depending on boom and control position. |
|
Definition
| C: could be either, depending on boom and control position. |
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|
Term
Which of these items "would not" be necessary to check before starting the engine of a crane?
A: transmission was in neutral
B: oil pressure gauge
C: parking brake was applied
D: swing lock is engaged |
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Definition
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Term
Depending on the model, boom swing is stopped with the swing control lever, or a foot pedal.
True or False |
|
Definition
|
|
Term
Hydraulic fluid and controls are not affected by cold weather, therefore a warm up procedure is not required.
True or False |
|
Definition
|
|
Term
When extending a hydraulic boom, the load line will automatically lower to prevent the block from hitting the boom tip.
True or False |
|
Definition
|
|
Term
With a suspended load, the operator can leave the seat if the machine is in perfect condition and all brakes are set.
True or False |
|
Definition
|
|
Term
The operator must take signals from one person only, but must obey a stop signal from anyone.
True or False |
|
Definition
|
|
Term
After being programmed, an operational aid must only be checked for accuracy by the manufacturer every six months.
True or False |
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Definition
|
|
Term
If the readout on an operational aid does not match the crane load chart ratings, the operational aid numbers will take precedence.
True or False |
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Definition
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