#1
What is the primary purpose of a crane load chart?
To determine the maximum weight a crane can lift at various boom lengths and radii
ExplanationDetermines crane's maximum lifting capacity under different conditions.
#2
Which of the following actions contributes to crane stability during operation?
Using proper counterweights
ExplanationCounterweights maintain crane stability during operation.
#3
What does the term 'rated capacity' refer to in crane operations?
The maximum weight a crane is designed to lift under ideal conditions
ExplanationMaximum weight crane can lift under optimal conditions.
#4
What does 'SWL' stand for in crane terminology?
Safe Working Load
ExplanationIndicates the safe maximum load a crane can handle.
#5
In crane operations, what does the term 'boom angle' refer to?
The angle formed between the boom and the horizontal
ExplanationAngle between the crane's boom and horizontal plane.
#6
What is the function of a hook block on a crane?
To connect the crane to the load
ExplanationAttaches the crane to the load for lifting.
#7
What is the minimum distance that a crane should be set up away from power lines according to safety regulations?
15 feet
ExplanationEnsures safe distance from power lines to prevent accidents.
#8
What is the primary function of an outrigger on a crane?
To stabilize the crane during lifting operations
ExplanationOutriggers enhance crane stability during lifting.
#9
What is the recommended procedure if a crane operator detects any signs of mechanical issues during a pre-operational inspection?
Stop operation immediately and notify a supervisor
ExplanationImmediate stoppage and supervisor notification mitigate risks.
#10
When should a crane operator use hand signals for communication?
As a backup to radio communication or when visibility is obstructed
ExplanationHand signals serve as backup or in obstructed visibility.
#11
What precaution should be taken when operating a crane on a slope?
Use additional outriggers or stabilizers to maintain stability
ExplanationAdditional outriggers or stabilizers ensure stability on slopes.
#12
What is the role of a crane supervisor on a construction site?
Ensuring compliance with safety regulations and coordinating crane operations
ExplanationOversees safety compliance and crane operations coordination.
#13
Which of the following crane types is typically used for lifting heavy loads at construction sites?
Tower crane
ExplanationTower cranes excel in lifting heavy loads at construction sites.
#14
What is the purpose of load testing a crane?
To determine the maximum weight it can lift safely
ExplanationEnsures crane can safely lift its maximum capacity.