Ropes Systems (ch.8) Flashcards
Two line rope system compliment (truck);
X12
1.One 300 ft low stretch 1/2 in static kernmantle lifeline, white in color with blue or red stripe, stored in red nylon bag.
2. One 200 ft low stretch 1/2 in static kernmantle rope, orange in color, stored in orange nylon bag.
3. Three class 3 harness/ one small & 2 large
4. 2 8mm accessory cords 20’ (leh)
5. 2 stainless steel brake bar racks, with six aluminum bars
6. Eight steel “D” shaped carabiners
7. Two 8mm x 6 foot accessory cord
8 two 8mm x 5 foot accessory cord
9. 2 pieces of blue/yellow/red webbing (5ft, 12ft, 20ft)
10. 2 inspection record sheets
11. One 2 inch x 7ft anchor strap with d rings
12 two pieces of yellow multi loop webbing 3 ft.
The high strength core (____) can carry up to ___% of the load.
Kern / 90%
Lifeline rope is rated at ______ pounds and weighs ___ pounds per 100’. Which meets or exceeds the NFPA ____ standard for one and two person rescues
10,000 pounds
7 pounds/ NFPA 1995
_______ strength is the rated strength of the rope when pulled in a straight line, with no knots, to a point where it can be expected to break
Tensile strength
To determine the safe working load of a rope, you divide the manufacturers rated tensile strength by the NFPA safety factor of _____
15
Lifeline rope = ____ pound working load. Which exceeds the NFPA standard of _____ pounds for two person rope
666 pound working load
600 pounds standard for 2 person rope
The best way to remove dirt particles from a rope is to place the rope in a mesh bag or a pillowcase, place in a washing machine on gentle cycle and wash in cold water. Use a mild chemical free soap such as,
lifeline cleaner, Ivory Snow or Woolite
The KM -lll static kernmantle rope has a melting point of _____ degrees Fahrenheit
450 degrees
Mark the midpoint and the ends of the rope. Use only the following markers, as other markers will weaken the fibers of the rope.
Carter MARKS-A LOT, Stanford SHARPIE and Binney-Smith MAGIC MARKER.
Log the ropes on form ____when; x4
F-975
As soon as received
All training
Emergency incidents
Monthly checks
The end of the rope s(all be secured to the bottom of the bag by tying a ______
Figure eight stopper
The webbing used by LAFD is _____ and _____ rated at ______ pounds
1” spiral weaved tubular and folded over flat
4000 pounds
Sizes;
Blue
Yellow
Red
5
12
20
Carabiners used in the LAFD rope rescue kits are steel “D” shaped carabiners, rated at ______ pounds.
9000
Which is the stronger side of caribiner?
The spine
The brake bar rack comes with six aluminum bars attached to it. The welded eye, on one end, is used for attachment and is rated at _______pounds
10,000 pounds
Brake bar rack procedure;
First pass the rope over the _____
Training groove
For a single person load (rappel or lower), start with _____bars. For a two-person loads, start with ____bars.
4 one person
5 two person
Brake bar;
The maximum would be six, and the minimum should never be less than _____during any operation.
3
Rappelling or lowering operations over _____feet a brake bar rack should be used, due to the twisting of the rope.
75
The strength of the rope is restored fully when placed over a turn of a pulley that is at least ____ times the diameter of the rope
Four times
LAFD carries two types of pulleys:
2 1/2 inch aluminum prusik mining and 4 in. Stainless steel
We have had a problem with the keepers breaking off. One-way to avoid this is to wrap the keeper with _______, however if it does break off or there are any loose ends, then tie it off with an ______
Electrical tape
Overhand knot
_______is measured by the percentage of rope strength that remains after a knot is tied in the rope.
Knot efficiency
