ADVANCE RIGGER STUDY SHEET TESTED
QUESTIONS GUARANTEED TO PASS
●● Backward Stability
Answer: measure of crane steadiness in relation to tipping axis on
opposite side of the crane from the boom.
●● Adding counterweight to the rear of the upperworks moved the
cranes CG..
Answer: Towards the counterweight(rear of the crane). Lowering the
book lowers the booms CG and moves it away from the crane. This has
the effect of moving the cranes overall CG towards the boom, and it also
lowers it slightly.
●● During work near an excavation site the crane must be..
Answer: At least 1.5 times the depth of excavation
●● Quadrant of Operation
Answer: The position of the cranes boom in relation to the cranes base.
●● Crane Radius
Answer: The most important factor for stability is?
, ●● The further the radius
Answer: The lower the capacity
●● The closer the radius
Answer: The higher the capacity
●● Boom Deflection
Answer: When the load is applied the radius will increase
●● A sudden stop of the boom swing can result in..
Answer: Side loading
●● Side loading can result in..
Answer: A boom to collapse
●● Shock Loading
Answer: Loads introduced to the crane due to forces of acceleration or
deceleration.
●● Who plans a multiple crane lift?
Answer: Qualified Planners
QUESTIONS GUARANTEED TO PASS
●● Backward Stability
Answer: measure of crane steadiness in relation to tipping axis on
opposite side of the crane from the boom.
●● Adding counterweight to the rear of the upperworks moved the
cranes CG..
Answer: Towards the counterweight(rear of the crane). Lowering the
book lowers the booms CG and moves it away from the crane. This has
the effect of moving the cranes overall CG towards the boom, and it also
lowers it slightly.
●● During work near an excavation site the crane must be..
Answer: At least 1.5 times the depth of excavation
●● Quadrant of Operation
Answer: The position of the cranes boom in relation to the cranes base.
●● Crane Radius
Answer: The most important factor for stability is?
, ●● The further the radius
Answer: The lower the capacity
●● The closer the radius
Answer: The higher the capacity
●● Boom Deflection
Answer: When the load is applied the radius will increase
●● A sudden stop of the boom swing can result in..
Answer: Side loading
●● Side loading can result in..
Answer: A boom to collapse
●● Shock Loading
Answer: Loads introduced to the crane due to forces of acceleration or
deceleration.
●● Who plans a multiple crane lift?
Answer: Qualified Planners