Rope Systems

Question 1

Our rope is

Answer 1

1/2 inch static kern mantle rope

Question 2

the “Mantle” is

Answer 2

a tightly woven sheath designed primarily for protection against abrasion

Question 3

the “Kern” is

Answer 3

a braided core, carries up to 90% of the load

Question 4

Rope is rated at

Answer 4

10,000 lbs and weighs 7 pounds per 100 feet

Question 5

Tensile strength

Answer 5

is the rated breaking strength of the rope when pulled in a straight line, with no knots.

Question 6

How to wash rope?

Answer 6

in mesh bag or pillow case in washing machine on gentle cycle and wash in cold water.

Question 7

Static kernmantle melting point?

Answer 7

450 degrees

Question 8

Webbing rated at

Answer 8

4000 pounds

Question 9

Blue webbing is

Answer 9

5 feet

Question 10

Yellow webbing is

Answer 10

12 feet

Question 11

Red webbing is

Answer 11

20 feet

Question 12

Prusik loops are made of

Answer 12

8-mm nylon cord, rated at 3,630 pounds

Question 13

Carabiners rated at

Answer 13

9000 pounds

Question 14

Brake bar rack

Answer 14

rated at 10,000 pounds

Question 15

For single person load ?

Answer 15

start with 4 bars

Question 16

For two-person loads

Answer 16

starts with 5 bars

Question 17

Cliff pickets rated

Answer 17

single picket 700 pounds

Question 18

Pickets, 1-1

Answer 18

1400 pounds

Question 19

1-1-1 picket rating

Answer 19

1800 pounds

Question 20

2-1 picket rating

Answer 20

2000 pounds

Question 21

3-2-1 picket rating

Answer 21

4000 pounds

Question 22

Optional picket angle?

Answer 22

15 degrees, 2 feet into the ground, 1 foot above ground

Question 23

Load releasing hitch is made with

Answer 23

8 mm accessory cord 20 feet in length

Question 24

Safe working load

Answer 24

10,000 divided by 15 = 666 working load

Question 25

Store rope?

Answer 25

in cool dry location away from direct exposure to sunlight

Question 26

Forms for ropes

Answer 26

F975

Question 27

Webbing is

Answer 27

spiral weaved tubular webbing or edge stitched

Question 28

Edge stitched is

Answer 28

formed by folding over flat webbing lengthwise and stitching two sides togethers

Question 29

LAFD uses tubular over

Answer 29

flat webbing

Question 30

Tensile strength calculated? If a particular knot has a tensile strength of 100 pounds and the rope breaks when subjected to an 80 pound load, the knot is said to have an 80% knot efficiency rating

Answer 30

100 pound strength, breaks at 80 pounds = 80%

Question 31

Knot efficiency: Figure eight follow through

Answer 31

80%

Question 32

Knot efficiency: Figure eight on a bitch

Answer 32

80%

Question 33

Knot efficiency: Figure eight bend

Answer 33

80%

Question 34

Knot efficiency: Double overhand bed (Double fisherman)

Answer 34

80%

Question 35

Knot efficiency: water knot (overhand bend)

Answer 35

65%

Question 36

Knot efficiency: tensionless hitch

Answer 36

100%

Question 37

Knot efficiency: bowline

Answer 37

65%

Question 38

Knot efficiency: Butterfly knot

Answer 38

75%

Question 39

One black strip on end of rope is for

Answer 39

odd years

Question 40

Two black strips on end of rope is for

Answer 40

even years

Question 41

Log the rope as soon as you receive it, log all training, emergency incidents and monthly checks on ____

Answer 41

form 975.

Question 42

During your monthly checks, or if any of the following problems exist, call ____ and be guided by there instructions.

Answer 42

US&R 88

Question 43

LAFD carries two types of pulleys: The ___ aluminum prusik minding, and the _____.

Answer 43

2 ½ inch / 4 inch stainless steel

Question 44

Running end is the end outside the

Answer 44

rope bag

Question 45

Bitter end is inside the

Answer 45

rope bag