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Book 29 > Ropes Systems (ch.8) > Flashcards

Ropes Systems (ch.8) Flashcards

1
Q

Two line rope system compliment (truck);
X12

A

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.

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2
Q

The high strength core (____) can carry up to ___% of the load.

A

Kern / 90%

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3
Q

Lifeline rope is rated at ______ pounds and weighs ___ pounds per 100’. Which meets or exceeds the NFPA ____ standard for one and two person rescues

A

10,000 pounds

7 pounds/ NFPA 1995

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4
Q

_______ 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

A

Tensile strength

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5
Q

To determine the safe working load of a rope, you divide the manufacturers rated tensile strength by the NFPA safety factor of _____

A

15

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6
Q

Lifeline rope = ____ pound working load. Which exceeds the NFPA standard of _____ pounds for two person rope

A

666 pound working load
600 pounds standard for 2 person rope

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7
Q

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,

A

lifeline cleaner, Ivory Snow or Woolite

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8
Q

The KM -lll static kernmantle rope has a melting point of _____ degrees Fahrenheit

A

450 degrees

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9
Q

Mark the midpoint and the ends of the rope. Use only the following markers, as other markers will weaken the fibers of the rope.

A

Carter MARKS-A LOT, Stanford SHARPIE and Binney-Smith MAGIC MARKER.

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10
Q

Log the ropes on form ____when; x4

A

F-975
As soon as received
All training
Emergency incidents
Monthly checks

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11
Q

The end of the rope s(all be secured to the bottom of the bag by tying a ______

A

Figure eight stopper

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12
Q

The webbing used by LAFD is _____ and _____ rated at ______ pounds

A

1” spiral weaved tubular and folded over flat
4000 pounds

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13
Q

Sizes;
Blue
Yellow
Red

A

5
12
20

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14
Q

Carabiners used in the LAFD rope rescue kits are steel “D” shaped carabiners, rated at ______ pounds.

A

9000

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15
Q

Which is the stronger side of caribiner?

A

The spine

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16
Q

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

A

10,000 pounds

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17
Q

Brake bar rack procedure;
First pass the rope over the _____

A

Training groove

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18
Q

For a single person load (rappel or lower), start with _____bars. For a two-person loads, start with ____bars.

A

4 one person
5 two person

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19
Q

Brake bar;
The maximum would be six, and the minimum should never be less than _____during any operation.

A

3

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20
Q

Rappelling or lowering operations over _____feet a brake bar rack should be used, due to the twisting of the rope.

A

75

21
Q

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

A

Four times

22
Q

LAFD carries two types of pulleys:

A

2 1/2 inch aluminum prusik mining and 4 in. Stainless steel

23
Q

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 ______

A

Electrical tape
Overhand knot

24
Q

_______is measured by the percentage of rope strength that remains after a knot is tied in the rope.

A

Knot efficiency

25
Q

Figure eight stopper knot efficiency = %

A

75%

26
Q

Figure eight follow through knot efficiency =%

A

80%

27
Q

Figure eight on a bitght knot efficiency =%

A

80%

28
Q

Figure eight bend (follow through) knot efficiency =%

A

80%

29
Q

Double figure eight on bight knot efficiency =%

A

80%

30
Q

double overhand bend or double fisherman knot efficiency =%

A

80%

31
Q

Accessory cord is made from nylon kernmantle rope, ranging in diameters from ___mm to ___mm. The lafd uses ____ mm prusik loops on all 1/2 ropes

A

6mm to 10mm

8mm

32
Q

When accessory cord is tied into prusik loops, the cord used should not be less than ____inch, or more than ____the diameter of the rope it is to be tied on.

A

1/2 to 2/3

33
Q

When using tandem prusiks , the prusiks must be of different lengths, one ___ ft and one ___ ft

A

5ft and 6ft length

34
Q

Water knot/ overhand knot efficiency =%

A

65%

35
Q

Tensionless hitch or no knot efficiency =%

A

100%

36
Q

Bowline knot efficiency =%

A

65%

37
Q

Butterfly knot efficiency =%

A

75%

38
Q

The load releasing hitch (LRH) utilized by the LAFD is constructed out of 8-mm accessory cord ___feet long.

A

20ft

39
Q

Building load releasing hitch;
Take both lines that exit the Munster hitch and wrap around the line between caribiners ___ to ___ times

A

3 to 6 times

40
Q

Pickets; the pickets should be pounded ___ ft into ground at a ___ degree angle.

A

2ft
15 degrees

41
Q

When using fence post as anchor make sure post has ____

A

A cap due to water buildup

42
Q

Single pocket = ___ pounds

A

700

43
Q

1-1 pocket = ____ pounds
1-1-1 = ___ pounds

A

1400
1800

44
Q

2-1 pocket = ____ pounds
3-2-1 = ____ pounds

A

2000
4000

45
Q

Tending the tandem prusik belay;
The ___ hand is one furthest from the anchor point
This hand will hold the belay line and put a ___ turn in the line

A

Lead hand
Z turn

46
Q

Lafd saftey thoughts
Never get closer than ___ feet from edge without being tied off

A

5ft

47
Q

When wearing PDF leave backflap out or tuck in?

A

Tuck in

48
Q

Passing knot

A

Main line = 6” from bar

Belay = 6-10” from prusik

Book 29 (9 decks)

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