Rigging Equipment 120

This class covers the different kinds of equipment used in rigging, the properties of rope and chains, basic knots, hitches, and sling configurations, and fittings and end attachments.

Class Details

Class Name:
Rigging Equipment 120
Description:
This class covers the different kinds of equipment used in rigging, the properties of rope and chains, basic knots, hitches, and sling configurations, and fittings and end attachments.
Version:
1.0
Difficulty:
Beginner
Number of Lessons:
19
Additional Language:
Spanish

Class Outline

  • Objectives
  • Rigging Equipment
  • Natural Fiber Rope
  • Synthetic Fiber Rope
  • Fiber Rope Lay
  • Wire Rope
  • Wire Rope Lay
  • Knots
  • Bends and Hitches
  • Seizing and Splicing
  • Types of Splices
  • Thimbles, Clamps, and Sockets
  • Fiber Rope Slings
  • Wire Rope Slings and Chain Slings
  • Sling Configurations
  • Hooks
  • Shackles, Links, and Rings
  • Eyebolts and Turnbuckles
  • Summary

Objectives

  • Describe identifying and using different types of rigging equipment.
  • Describe natural fiber rope.
  • Describe synthetic fiber rope.
  • Distinguish between different types of fiber rope lay.
  • Describe wire rope.
  • Distinguish between different types of wire rope lay.
  • Describe knots.
  • Distinguish between bends and hitches.
  • Distinguish between seizing and splicing.
  • Distinguish between different types of splices.
  • Distinguish between thimbles, clamps, and sockets.
  • Describe fiber rope slings.
  • Distinguish between wire rope slings and chain slings.
  • Distinguish between different types of sling configurations.
  • Describe hooks.
  • Distinguish between shackles, links, and rings.
  • Distinguish between eyebolts and turnbuckles.

Certifications

Glossary

Vocabulary Term Definition
6 x 19 A six-strand wire rope with 19 wires per strand.
basket hitch A sling configuration formed from a grommet that is used to form a cradle for the load. Basket hitches are typically used in pairs.
bend A type of knot that is used to join two pieces of rope.
birdcaging Permanent damage to a wire rope from shock loads. Strain causes the strands of rope to protrude in the form of a birdcage.
bridle hitch A sling configuration that is used to help balance a load by distributing the weight more evenly.
cable-laid A rope lay configuration in which three right-hand hawser-laid lines are twisted in a left-hand direction. Cable-laid rope typically is used for heavy construction.
choker hitch A sling configuration that is used for loads that are irregularly shaped and difficult to balance.
clamp An end fitting used to secure hardware to the end of a rope.
clove hitch A type of fastening in which a rope forms a noose around an object by looping it twice around the object, and pulling the ends of the rope tautly in opposite directions.
connecting link A small, oblong metal ring used to attach slings to loads and lifting equipment.
core The inner part of a rope around which strands are twisted to give the rope more strength.
cotter pin A small, slender metal fastening used to hold a fitting in place.
double sheet bend A fastening that is used on ropes of different thickness or rigidity.
endless sling A rope, chain, or piece of synthetic webbing that forms an unbroken circle. Also known as a grommet.
eye and eye A basic sling configuration made from a rope with an eye splice at each end.
eye splice A type of splice that is used to make a permanent loop at the end of a rope.
eyebolt A threaded bolt with a forged hole or loop at one end.
fiber rope Rope made from thin pieces of material twisted to form a yarn. Fiber rope can be composed of natural fibers or synthetic fibers.
figure-eight A larger, more complex type of overhand knot.
fitting A piece of hardware used to reinforce and secure ropes.
forged eyebolt An extremely rugged eyebolt designed for lifting heavy loads.
fraying The unraveling of rope fibers caused by friction, prolonged use, or damage to the rope.
grommet A rope, chain, or piece of synthetic webbing that forms an unbroken circle. Also known as an endless sling.
hawser-laid A rope lay configuration in which three strands are usually twisted in a right-hand direction.
headache ball A heavy ball attached to a hook to keep the lifting cable taut. Headache balls are typically used on cranes.
hitch A type of knot that forms a noose around an object such as a pipe or a post in order to secure it. Hitches are meant to be temporary and therefore can be undone easily.
hook A lifting device used to pick up loads with eyebolts attached. Hooks are usually used with chains, hoists, and slings.
kinking Damage to wire rope caused by bending it sharply.
knot A fastening that is formed by tying a rope to another object or to itself. A good knot should be easy to tie and untie, and it should hold without slipping.
lang lay In wire rope, the strands and wires that are wound in the same direction.
lay The direction in which the strands of a rope are twisted.
link A metal ring used to attach slings to loads and lifting equipment. Links can be oblong, pear-shaped, or round.
load The opposition to applied force, such as a weight to be carried or moved.
long splice A type of splice that creates almost no increase in the diameter of the rope. Long splices are used for running through blocks or sheaves.
master link A large, oblong link used to attach slings to loads and lifting equipment.
natural fiber Material that comes from plants such as Manila, sisal, coir, and cotton.
nylon An artificial material made from polymers. Nylon is extremely strong and resilient.
overhand knot A simple type of fastening in which a rope is twisted into a loop, and one end of the rope is inserted through the loop.
pear-shaped link A link in the shape of a pear that is used to connect chains. A disadvantage of pear-shaped links is that they can slip and be turned upside down, causing the narrow end of the link to bend and become weakened.
pin A slender metal fastening.
pivot To turn 180 degrees.
polyester An artificial material used for its strength and resistance to ultraviolet deterioration.
polyethylene An artificial material made from petroleum and natural gas. Polyethylene is used to make plastic bottles and bags.
polypropylene An artificial material that is tough, lightweight, rigid, and resistant to chemicals.
regular lay In wire rope, the strands and wires are wound in opposite directions from each other.
reverse lay In wire rope, the strand wires are wound in the opposite direction of the wires in the adjacent strand.
rigging The process of lifting and moving heavy loads with ropes, chains, and mechanical devices.
ring A round link.
saddle The removable bottom of a U-bolt clamp.
safety latch A fastening that prevents the load from slipping off the hook.
seizing A method of forming an extremely strong connection to a wire rope by wrapping and tightening a wire around the rope.
shackle A U-shaped piece of metal that is closed at the end with a pin or bolt.
short splice A type of splice that is extremely strong but increases the diameter of the rope.
shoulder eyebolt An eyebolt used for increased strength when side forces impact the load during lifting.
shroud-laid A rope lay configuration in which four strands are twisted in a right-hand direction around a central core. Shroud-laid rope is resistant to kinking.
single sheet bend A fastening that is used on ropes of different thickness or rigidity.
single-leg sling A sling configuration in which one end is fastened to a hook or shackle and the other suspends the load on a single line of rope or chain.
sling A loop of material that connects the load to the lifting device. Slings can be made of chain, wire, metal mesh, natural, and synthetic materials.
socket A type of fitting that can be installed and removed quickly and easily.
splicing A method of joining two ends of rope by unlaying the strands, placing the rope ends together, and interweaving the strands.
square reef bend A fastening that is used on ropes of the same diameter.
standard eyebolt An eyebolt used only for vertical lifting.
stopper A type of knot that forms a knob at the end of the rope.
swivel To turn 360 degrees.
synthetic fiber Material that comes from man-made substances such as nylon, polyester, polyethylene, and polypropylene.
thimble A small piece of hardware used to reinforce the loop in an eye splice.
thread A raised, helical rib or ridge around the interior or exterior of a cylindrically shaped object. Threads are found on screws, nuts, and bolts and are used to fit parts or provide motion.
throat opening The open area near the point of the hook.
timber hitch A type of fastening in which a rope forms a noose around an object, and the end of the rope is looped several times through the noose to secure it.
turnbuckle A fitting that allows a load to be leveled by adjusting the tension of wire rope. The end fittings of a turnbuckle can be eyes, hooks, or jaws, and they can be used in any combination,
U-bolt A commonly used clamp that is placed over the rope, and a removable bottom is secured to the bottom of the clamp with two nuts.
wedge socket A commonly used socket for applications in which the length of the rope is frequently altered.
wire rope Rope made from strands of steel or iron. Wire rope is used for jobs that require the rope to be extremely strong and resistant to abrasion.