Knots and Hitches
Slings
Fiber Rope
Rigging Hardware
Definitions
100
It will not slip. The knot is strong and suitable for the job It can be tied easily It can be untied easily
What are the four major requirements of rope fastening?
100
This hitch provides the rigger with 100% of the safe working load
What is the straight or vertical hitch
100
This is a hemp fiber rope that comes from the leaf stem of the abaca plant, which is native to the Philippines and some areas of Central America.
What is Manila rope
100
This is the best of all clips when preparing wire rope for use in rigging.
What is J-bolt clips
100
A stopper to prevent unlaying of strands at end end of rope
What is Crown knot
200
It is the best knot to use to keep the end of a rope or fall from running out of a tackle or pulley
What is a figure eight knot
200
This hitch provides the rigger with 75% of the safe working load
What is the choker hitch
200
This rope is twice as strong as manila and of all synthetic ropes it stretches the least under load.
What is Polyester rope
200
This provides a clevis attachment at the end of a wire rope.
What is Wedge sockets
200
Materials generally used under the lowered load to provide clearance for the removal of the rigging and to facilitate future handling.
What is Cribbing
300
Also known as the reef knot, it is used for tying together two dry ropes of the same size, and for tying the two ends of a rope together when it is used for backlashing.
What is a square knot
300
This hitch provides the rigger with 200% of the safe working load
What is the Basket Hitch
300
Size for size this is the strongest rope, over 2.5 times stronger than manila rope
What is Nylon rope
300
This piece of rigging hardware is measured by its shaft and not it's bow
What is a shackle
300
The act of moving a suspended load in a horizontal direction using two or more pieces of hoisting equipment.
What is Drifting
400
this knot should be used for attaching the end of a rope to an object for a right-angle pull, as in the case of guy lines
What is the clove hitch
400
With this degree of angle between the load and the sling, the load on each leg of the sling is equal to the entire weight of the load
What is 30 degrees
400
With ropes this is figured by dividing the breaking strength by the safety factor
What is the Safe Working Load
400
When using shoulder bolts this must always be in contact with the surface of the material being lifted.
What is the shoulder
400
An endless rope of one strand only making three complete interwoven loops
What is a Grommet
500
This knot will not slip or draw tight under heavy loads and is used for joining wet ropes, or for tying a rope to an eye
What is a Double sheet Bend
500
It is dangerous to use only one sling in a choker hitch to lift a load; it might shift and cause the load to slide out. This hitch should be used instead.
What is a double wrap choker hitch
500
This is slightly weaker that the short splice, but it increases the rope diameter only slightly which allows the rope to run through a sheave or block without obstruction.
What is the long splice
500
These are the most popular links because their shape puts the small part of the link on the hook and the wider portion on the bottom to accommodate up to four shackles with slings or hooks.
What is Pear shaped links
500
An extension attached to the boom point to provide added boom length for lifting specified loads. This may be in line with the boom or offset to various angles.
What is a Jib
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