General safety
Ninety percent of all crane and rigging accidents result from
Human error.
Which of the following cranes has no outriggers?
Crawler-mounted crane
If a blind lift is being made, who will have to determine the weight of the load?
Rigger
When raising the crane boom, the load will do what?
Move toward the crane.
In which of the situation will a serious accident most likely occur?
When an unstable load is lifted
Which of the following cranes is not designed to travel during operation?
Tower crane
When can the minimum approach distance be entered?
Once the power line has been de-energized by the power company
If the crane's boom is lowered, the capacity of the crane does what?
Decreases
Which of the following is a safe practice of crane operation?
Do not lift a load any higher than necessary.
Which of the following cranes is most suitable for operating on the rough terrain of construction sites?
Rough terrain crane
What does the term “blind lift” mean?
The crane operator cannot see the load to be lifted.
What is the load called that results from the rapid change in movement of a static load?
Shock load
The term “minimum approach distance” refers to
The minimum distance that a crane must keep from energized power lines.
In which of the following situations will a serious accident most likely occur?
When equipment is used in a way that it was not designed to be used
Cribbing is used under the outriggers of a crane to
Increase the area the crane weight is dispersed to.
Why are insulating barriers sometimes attached to cranes?
To prevent physical contact with power lines if an operator forgets to take account of a hazardous zone
What is the area under the load known as?
Fall zone