Shackles
Sling Angles
Hitches
Formulas
Mobile Cranes
100
A Shackle is sized by the diameter of this...
What is the Diameter of the Bow
100
60 degrees
What is the recommended safe lifting angle
100
it gives a full 360 degree compression
What is double choker hitch or double basket hitch
100
Pi times the Radius squared
What is area of a circle
100
Not a permitted use of an operational aide
What is test weighing a load/ determining the weight of a load
200
A Shackle is rated at 100% capacity with this type of pull...
What is a straight pull
200
1.15 / 115%
What is the factor for 60 degree sling angle
200
Is rated at 75% of a single vertical hitch.
What is a choker hitch
200
Length times Width
What is area of a rectangle
200
this happens to Jib capacity as the angle to the ground decreases...
What is decreases
300
A 90 degree pull reduces the capacity of a shackle by...
What is 50 percent
300
1.41 / 141%
What is the factor for a 45 degree sling angle
300
Rated at 100% of sling capacity
What is a straight vertical hitch
300
4/3 times Pi times the Radius Cubed
What is volume of a sphere
300
an extension of the main boom
What is the Jib
400
It is acceptable to replace the pin of a shackle with a grade 8 alloy bolt.
What is False
400
Tension= W/N x L/V
What is Riggers Rule
400
used to reduce the shearing effect where sharp corners are a concern
What is a softener
400
The weight of 1' x 1' x 1" of carbon steel
What is 40
400
where the hook should be positioned with reguards to the center of gravity of a load
What is directly over it
500
A screw pin shackle is designed to have the pin...
What is seated
500
Tension is equal to the load, on all slings.
What is 30 degrees
500
the rating for a true basket hitch...
What is 200%
500
Pi times the Radius squared times the Height
What is volume of a cylinder
500
produced by a sudden start or stop while hoisting.
What is shock or impact loading
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