SAFETY
It is the cause of 90% of all crane accidents
What is Human Error
Type of crane that is designed to travel easily across the ground
What is Rough terrain crane
Most commonly used type of shackle in construction
What is screw pin shackle
The minimum horizontal sling angle allowed according to OSHA
What is 30 degrees
The signal that will cause the load to move away from the crane
What is Boom down or Extend boom
The term for the distance a crane must stay from power lines
What is minimum approach distance
Type of crane not designed to travel during operation
What is Tower crane
When a load is supported near the tip of a hook
What is point loading
The most commonly used sling material used in construction
What is Wire rope
The signal an operator must take from anyone of the job
What is Emergency Stop
When any part of the crane breaches the minimum approach distance
What is encroachment
Type of crane with no outriggers
What is Crawler mounted
Point loading can reduce capacity of a hook up to what percent
What is 60%
WLL stands for
What is Working Load Limit
The signal that will make the load move towards the crane
What is Boom up or Retract boom
ANSI stands for
What is American National Standards Institute
Device which prevents damage from contact between the load block and boom tip
What is anti two-blocking device
The percents of bends or twists are allowed on hardware according to ANSI
What is 5%
It is the best sling configuration for long loose bundles of material
What is two double wrap choker hitches
The signal that will move the load away from the crane while keeping load at the same height
What is lower the boom and raise the load
A load that has a rapid change of movement
What is shock load
Measures the angle of the boom relative to horizontal
What is boom angle indicator
Type of hardware designed only to lift straight up (vertical)
What is non shouldered eye bolt
The three parts of a wire rope
What is Core/Strand/Wire
The type of system an operators reception (hearing) must be made with a radio
What is hands free