Flashcards in Chapter # 8 Ropes, Webbing, Knots Deck (71)
Name the two classifications that fire service rope have.
Life safety and Utility
Standard on Life Safety Rope and Equipment for Emergency Services.
NFPA 1983 establishes two other types of rope, name them.
Escape Rope and Water rescue throw line
NFPA requires that only rope of ........... be used as life safety rope.
Block Creel Construction
List the requirements of NFPA 1983 that must be meet to reuse life safety rope.
No abrasions or apparent damage. It has not been exposed to heat or flame. It has not been subjected to a impact load. It has not been exposed to anything that can deteriorate the rope. It has passed inspection by a qualified personnel.
Life safety rope that has been subjected to a impact load or doesn't pass inspection must be what?
Destroyed or marked as utility rope.
List three things that utility rope can be used for.
Hoist equipment. Secure unstable objects. Cordon off a area.
Synthetic fibers are used to make what type of rope. Natural fibers are used to make what kind of rope?
Life safety and utility. Utility only
List things that are a detriment of natural fiber ropes.
Loose strength when they get wet. Rot rapidly. Prone to mold and mildew. Deteriorates when exposed to chemicals. Burns when in contact with embers or flame.
List advantages of synthetic fiber rope.
Excellent resistance to water, mildew, mold, rotting, shrinkage, and UV light. Longer life span then natural fiber. Strong and lightweight. Easy to maintain.
Name a disadvantage of synthetic fiber rope.
Melt when exposed to heat.
List advantages of natural fiber rope.
Resistant to sunlight. Does not melt when exposed to heat. It holds a knot firmly.
Name the four most common types of rope construction.
Kermantle, Laid, Braided, and Braid on Braid.
The only type of rope construction acceptable for life safety rope.
Rope that consist of a protective shield (mantle) over the load bearing core strands (kern).
What percentage of a Kermantle ropes strength is from the core (kern)?
According to NFPA 1983 low stretch rope should not stretch more then .......percent when tested under a load equal to .......percent of its breaking strength.
Rope constructed by twisting several groups of strands together. Used exclusively for utility rope. Susceptible to abrasion and other physical damage. Damage immediately effects the ropes strength.
Laid (twisted) rope
Rope constructed by uniformly intertwining strands of rope together. Load bearing fibers are vulnerable to abrasion and damage.
Rope that consist of a braided core enclosed in a braided herringbone pattern sheath. Half its strength is from the sheath the other half is from the core. Disadvantages are that it may not resist abrasion and that the outer sheath may slide along the inner core.
Braid on Braid. (Also called Double braided rope.)
When should all types of rope be inspected?
After each use and annually
True or False. Natural fiber laid rope deteriorates with age. When it reaches the end of its service life period as determined by the manufacture it should be removed from service?
Will rot from one rope move to effect another rope if they are stored together?
If while inspecting a braid on braid rope you notice that the sheath slides on the core what should you do?
Cut the end of the rope, pull off the excess material, then seal the end.
To ensure a rope remains in good condition follow manufactures guidelines and these 8 additional guidelines.
Avoid abrasion and unnecessary wear. Avoid sharp angles and bends. Protect ends from damage. Avoid sustained loads. Avoid rust. Prevent contact with chemicals. Reverse ends of the rope periodically. Do not walk on rope.
How much of a ropes strength can be reduced from sharp angles, knots, and bends?
A rope should never be loaded with a sustained load for more then how many days?
Remove a rope with rust stain if the rust penetrates how much of the rope?
1/2 the width
The first step in cleaning rope is to use a ............to remove loose surface debris and grime.
stiff bristle brush