#1
What is the primary function of a crane rigging?
To lift and move heavy objects safely
ExplanationEnsure safe lifting and movement of heavy objects.
#2
Which factor affects the stability of a crane the most?
The weight of the load
ExplanationLoad weight is the primary factor impacting crane stability.
#3
What is the purpose of a tagline in crane rigging?
To control the swing of the load
ExplanationTagline is used to control the swinging motion of the load.
#4
Which type of crane is most commonly used for lifting and moving materials on construction sites?
Mobile crane
ExplanationMobile cranes are commonly used for construction site material lifting.
#5
What does the term 'load moment' refer to in crane operation?
The distance from the crane's center of rotation to the load
ExplanationLoad moment is the distance from the crane's center of rotation to the load.
#6
What is the primary purpose of a crane's counterweight?
To stabilize the crane
ExplanationCounterweight is used to stabilize the crane during operations.
#7
What is the primary purpose of a load chart in crane operation?
To provide guidelines for safe lifting based on various factors
ExplanationLoad chart provides guidelines for safe lifting based on various factors in crane operation.
#8
What is the recommended maximum wind speed for crane operations?
25 mph
ExplanationLimit crane operations to wind speeds below 25 mph for safety.
#9
What does the term 'sling angle' refer to in crane rigging?
The angle formed by the sling and the load
ExplanationSling angle is the angle between sling and load in crane rigging.
#10
What is the term used to describe the process of gradually lowering a load to the ground?
Lowering
ExplanationLowering refers to the gradual descent of a load to the ground.
#11
Which factor is NOT considered when determining the load capacity of a crane?
Wind speed
ExplanationWind speed is not a factor in determining crane load capacity.
#12
Which component of a crane is responsible for hoisting and lowering the load?
Hoist
ExplanationThe hoist is responsible for lifting and lowering the load.
#13
What does the term 'outrigger' refer to in crane operation?
A stabilizing mechanism extending from the crane's base
ExplanationOutrigger is a stabilizing mechanism extending from the crane's base.
#14
Which of the following is NOT a type of crane stability?
Operational stability
ExplanationOperational stability is not a type of crane stability.
#15
Which action can improve the stability of a crane on soft ground?
Using larger outrigger pads
ExplanationEnhance stability on soft ground by using larger outrigger pads.
#16
What is the recommended procedure if a crane makes contact with a power line?
Have a qualified professional assess the situation
ExplanationCall a qualified professional to assess the situation if a crane contacts a power line.
#17
In crane rigging, what is the purpose of a spreader bar?
To attach multiple slings to a single load
ExplanationSpreader bar is used to attach multiple slings to a single load in crane rigging.
#18
What safety precaution should be taken when working near power lines with a crane?
Maintain a minimum distance from power lines specified by regulations
ExplanationMaintain a minimum distance from power lines as specified by regulations.
#19
Why is it important to inspect crane rigging components regularly?
To ensure the load is securely attached
ExplanationRegular inspection ensures the secure attachment of the load in crane rigging.