Hitches
Full rated capacities are based on this hitch.
What is a vertical or straight hitch?
The size of a shackle is determined by:
What is the diameter of the body?
One of the leading causes of death in the construction industry.
What is electrocution?
Safety Factor for chains.
What is 4:1?
Wire rope with more wires per strand is more susceptible to wear and easier to_____.
What is bend?
Weakest of the 3 main hitches
What is a choker hitch?
An equalizer beam can be used as one, but THIS cant be used as an equalizer.
What is a spreader beam?
Any part of the crane or load must stay this far away from a powerline up to 350kV.
What is 200 tenths of a foot?
Chains must be at least this grade for overhead lifting.
What is 8 or 80?
Most wire rope rigging is this type of lay.
What is right regular lay?
Strongest hitch
What is the basket hitch?
When using wire rope clips the U-bolt must never go over this.
What is the live line?
If a crane makes contact with a powerline and cant get away it is important to:
What is remain in the cab?
This is a disadvantage of using chains for lifting
What is limited flexibility, abrasive, heavy, or metal to metal contact?
Safety Factor for wire rope
What is 5:1?
Minimum size of the load diameter for 1" wire rope slings in a "true" basket.
What is 25"?
According to ASME, hook throat openings must not exceed____
What is 5% or 1/4"?
If an operator must exit the equipment after powerline contact they should do so in this manner.
What is jump then hop or shuffle away?
Chains must be removed when wear of the links becomes this % of the original diameter.
What is 10?
The 3 main parts of wire rope are core, wire, and _____.
What is strand?
When the horizontal angle is _____ degrees on a 2 legged bridle, the tension in each sling is equal to the load weight
What is 30?
Custom designed hardware must be tested to ____% of its rated capacity
What is 125?
Minimum clearance must be determined by a registered professional engineer when voltage reaches this level.
What is 1000kV?
This chain grade is 50% stronger than grade 80
What is grade 120?
Working load limit (WLL) is also known as _____
What is Safe Working Load (SWL)?