Chapter 8 & 9 Flashcards
in tech rescue applications, the connective materials that are used in conjunction with other equipment. rope, nylon webbing, harnesses
software
3 general classifications of rope that may be present at an incident scene:
- Lifeline
- Accessory cord
- Utility rope
Lifeline may be purchased in _______ to _______ ft. lengths
100-600
much of the hardware is designed to work with ____ rope
1/2 inch
rope construction method that produces a continuous strand of fiber that runs the entire length of the rope’s core
block creel construction
rope that consists of a protective shield over the load bearing core
kernmantle rope
the core of kernmantle rope provides about _____ % of the rope’s strength
75
the manufacturer’s recommended maximum load for a rope or other system component
working load
NFPA 1983 requires that lifeline used for a two person, or rescue load, must be capable of supporting a load in excess of 40 kN or roughly _________ lbs.
9000
with lifeline rope, there is a required _______ safety factor
15:1
a dynamic sudden load placed on a rope
impact load
according to NFPA 1983, all lifeline must elongate between a minimum of ___ % to a maximum of ___% when loaded at ____% of its rated breaking strength
1, 10, 10
webbing is produced in various lengths from ___ to ___ inches in width
1-2
the 1 inch width webbing is typically used for lashing and has a _______lb. breaking strength
4000
________ webbing is mainly used in rescue work for straps and harness
flat
Spiral weave webbing, aka _________________, is the type most preferred in rescue work
shuttle-loom construction
simple, open, u-shaped fold in a rope
bight
free end of the rope used for hoisting, pulling, or belaying
running part
middle of the rope, between the working end and the running part
standing part
end of rope used to tie a knot
working end
knot that should be used in place of a bowline when using synthetic fiber rope.
figure eight knot
______________ create a moveable connection point between two ropes
prusik knots
bowline weakens rope by as much as ____% while figure eight weakens rope about _____%
30, 20
mechanical devices needed to fully and safely construct mechanical advantage systems with rescue rope
hardware
__________ are commonly used lifting frames that extend between ____ and ____ft. above an opening
tripods, 7, 12
all equipment used in rescue operations should be rated for general use rating of ________lbs.
600
tri-links are specifically designed to handle _____________ loads
multidirectional
the diameter of a pulley sheave should be ____ or ____ times the diameter of the rescue rope
3,4
living trees greater than ____ inches in diameter are generally considered to be strong enough to meet the bombproof criterion
6
method of building a strong anchor system from a weak or inadequate anchor point
tie back anchor
each travelling pulley in a system will contribute a minimum of a _____ mechanical advantage
2:1
A picket should be ___ long and ___ inch in diameter.
4, 1
A single picket can hold up to ____ pounds
700
Pickets are directional anchors and should be driven into the ground ______ of their length.
2/3
A ___ mechanical advantage system is also the standard benchmark used for one rescuer to raise one person
4:1
In a _________, all traveling pulleys move in the same direction, but at different rates of speed. ( two simple systems working in concert)
compound mechanical advantage system
The joining of pulleys or simple system to create a compound system has a ______ effect on the calculation of mechanical advantage.
Multiplicative
In a _________, the additional pulleys or systems are added within the original system, and not on the haul side of the system
complex mechanical advantage system
The joining of pulleys or systems to create a complex system has a _____ effect on the calculation of mechanical advantage
summative.
____ refers to a system designed for a specific need, or to identify the features of a system that must be built
Theoretical mechanical advantage
If the rope is attached to the load, the underlying simple system will have an ___ MA
odd
If the rope is attached to the anchor point, the underlying simple system will have and _______ MA
even
