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AO > *Bk 29- Rope Systems > Flashcards

*Bk 29- Rope Systems Flashcards

1
Q

The main and safety lines are dynamic or static rope?

A

Static

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2
Q

A truck company carries how many rescue harnesses and what sizes?

A

3 harnesses

One small/medium size
Two large sizes

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3
Q

The cord used for the load releasing hitch (LRH) is what length?

A

20ft long

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4
Q

The accessory cords used for the LRH and prusik are what thickness?

A

8mm

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5
Q

How many long prusik cords are included in the two line rope system?

How many short?

A

2 long

2 short

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6
Q

What lengths are the long and short prusiks?

A

Long - 6ft

Short - 5ft

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7
Q

How many pieces of red, yellow and blue webbing are there in the rope system?

A

2 red

2 yellow

2 blue

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8
Q

What length is the red webbing?

A

20ft

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9
Q

What length is the yellow webbing?

A

12ft

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10
Q

What length is the blue webbing?

A

5ft

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11
Q

What are the widths of the webbing used in the rope system?

A

1”

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12
Q

How many D shaped carabiners are in the two line rope system?

A

8

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13
Q

How many inspection record sheets are included in the two line rope system?

A

2, one for each rope

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14
Q

How many pieces of the yellow multi-loop webbing are there in the two line rope system? What length?

A

2 pieces

3’ in length

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15
Q

The kern of of the lifeline can carry up to what percent of the load?

A

90%

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16
Q

How many pounds is the lifeline rated to?

A

10,000 pounds

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17
Q

The lifeline weighs how many pounds per 100ft?

A

7 pounds

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18
Q

Soiled rope should be placed in a washing machine and washed in hot, warm or cold water?

A

Cold

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19
Q

How should a wet rope be dried?

A

Drip dried out of direct sun

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20
Q

The KM-III static kernmantle rope has a melting point of _____ degrees F

A

450

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21
Q

Rope ends should be swapped how often in the storage bag?

A

Annually

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22
Q

Which parts of the lifeline should be marked with a marker?

A

Midpoint and ends

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23
Q

What 3 markers can be used to mark the lifeline rope?

A
  1. Marks-A-Lot
  2. Sharpie
  3. Magic Marker
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24
Q

How should the ends of the lifeline rope be marked in order to ensure the ends are swapped annually?

A

1 stripe for odd years

2 stripes for even years

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25
Q

If ever a problem exists during an inspection of the rope, who should you contact?

A

USAR 88

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26
Q

The end of the lifeline rope should be secured to the bottom of the bag by tying what knot?

A

Figure 8 stopper

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27
Q

The webbing used by the LAFD is considered what type of construction?

A

Spiral weaved tubular (shuttle loom construction)

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28
Q

How many pounds is the webbing rated at?

A

4000 pounds

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29
Q

The 8mm nylon cord used to make the LRH and prusiks is rated at how many pounds?

A

3,630 pounds

30
Q

The steel D shaped carabiners are rated to how many pounds?

A

9,000 pounds

31
Q

Is it ok to re-tighten a carabiner once the system is loaded?

A

No, it may damage the locking mechanism

32
Q

The brake bar rack eyelet is rated to how many pounds?

A

10,000 pounds

33
Q

How many aluminum bars does the brake bar rack have?

34
Q

For a single person load, how many bars should you start with on the break bar rack?

35
Q

For a two person load, how many bars should you start with on the break bar rack?

36
Q

What is the minimum amount of bars in the break bar rack that should be used?

37
Q

The strength of the rope is restored fully when placed over a turn of a pulley that is at least _____ times the diameter or the rope.

38
Q

What are the two types of pulleys used by the Lafd?

A
  1. 2 1/2” aluminum prusik minding pulley

2. 4” stainless steel pulley

39
Q

What is the recommended tightening order for the class III harness?

A

Waist, legs, chest

40
Q

Which D ring is the main line connected to on the class III harness?

A

Waist D ring

41
Q

Which D ring is the belay/safety line connected to on the class III harness?

A

Chest D ring

42
Q

Connect the main line and belay line to the “D” ring connection points by tying a ________ and attaching a carabiner.

A

Figure 8 on a bight

43
Q

If you do not have a carabiner to make the attachment to the harness, what two knots can you use to secure the rope?

A
  1. Figure 8 follow through

2. Bowline backed up with double overhand knot

44
Q

Knot efficiency % for a figure eight stopper knot?

45
Q

Knot efficiency % for a figure eight follow through?

46
Q

Knot efficiency % for a figure 8 on a bight?

47
Q

Knot efficiency % for a figure eight bend?

48
Q

Knot efficiency % for a double figure eight on a bight?

49
Q

Knot efficiency % for a double overhand bend (double fisherman)?

50
Q

Prusik loops should not be applied to a rope of less than _____ inch, or more than _____ the diameter of the rope it is to be tied on.

A
  1. 1/2”

2. 2/3rds

51
Q

Which knot is used to backup a bowline?

A

Double overhand

52
Q

Knot efficiency % for a water knot?

53
Q

Knot efficiency % for a tensionless hitch or “no knot”?

54
Q

The minimum amount of wraps for a “no knot”?

55
Q

Knot efficiency % for a bowline knot?

56
Q

Knot efficiency % for a butterfly knot?

57
Q

How many wraps on the rope should there be when tying the LRH?

58
Q

When passing a knot in the main line, wait until the knot is ____ inches from the bottom of the break bar rack, then lock the system.

59
Q

When passing a knot in the belay line, wait until the knot is ___ to ___ inches from the tandem prusiks.

60
Q

As a safety consideration, never get closer than ____ feet from an edge without being tied off.

61
Q

Pickets for anchoring should be three foot in length, one inch round steel stock preferred. The pickets should be pounded ____ feet into the ground, at a ___ degree angle, away from the object

A
  1. 2 feet

2. 15 degree

62
Q

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

63
Q

The main line and belay line can share the same anchor if it is _____, however they must be attached to the anchor via separate pieces of webbing

64
Q

Cliff picket ratings:

Single picket = 
                1-1=
             1-1-1=
                2-1=
             3-2-1=
A 
700 pounds 
1400 pounds 
1800 pounds 
2000 pounds 
4000 pounds
65
Q

How many members are needed to operate a two line belay system?

A
  • One Rescuer
  • One Belay / Safety Line Tender
  • One Main Line Tender
  • One Safety Member, Checks Complete System (Technical Safety Officer.)
66
Q

Who shall inspect and approve all system components prior to starting a 2 line operation?

A

technical safety officer (TSO)

67
Q

When the anchor attachment point is below your ____, rappelling or lowering can be extremely dangerous.

68
Q

When forming a LRH, pull the carabiner that is attached to the bight in the rope until the munter hitch flips over in the second carabiner. There should be a ___ to ___ inch space between carabiners.

69
Q

What is the best way to remove dirt particles from the a rope?

A
  • 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, in the wash cycle.
  • drip dry out of sun
70
Q

How thick are the main and safety lines in a two line rope system?

What type of rope construction?

A

1/2” rope

kernmantle

AO (148 decks)

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