Lesson Plan 6 Ropes and Knots Flashcards Preview

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Flashcards in Lesson Plan 6 Ropes and Knots Deck (29):
0

What is the one type of rope we use?

Nylon kernmantle

1

When damaged or older than ___ ____ the rescue rope is cut into ____ sections and designated as ____ ___.

6 years; 75'; utility rope

2

Rope Data for Utility Rope

Kernmantle
75' lengths
1/2" diameter

3

Rope Data for a Lifeline

Rescue Kernmantle
1/2" diameter
200 / 300 ft lengths
9000 lb breaking strength
600 lb working load (15:1 safety factor)
Melts at 480 degrees F
2 % stretch under normal loads (200 lbs)

4

Rope Data for Nylon Webbing

Tubular (appears flat but is hollow)
4000 lb breaking strength

5

Rope Data for Prussik Cord

Breaking strength of 2800 lbs
8 mil diameter
Various colors and lengths

6

What is the standing part

The part of the rope that takes the load; hoisting, pulling etc

7

What is the running part

The part of the rope used to form the knot, or the free end of the rope

8

What is a bight

A bend in the rope keeping the sides parallel

9

What is a loop

Formed when crossing the sides of a bight

10

What is an eye splice

A permanent loop in the end of a rope

11

What is a tail or crown splice

The end of the rope spliced into itself

12

What is anchored or snubbed

Rope fastened to some stationary object

13

How much do the various knots weaken a rope:
Square knot
Figure 8 knot
Clove hitch
Short splice

50% less
20% less
35% less
20% less

14

A square knot is used for:

joining two ropes of the same size

15

Clove hitch is used

To hoist and secure equipment, to construct an improvised deluge and to secure a halyard

16

What is a round turn and two half hitches used for

to snub a rope to an object
secure a ladder anchor

17

What is a running knot used for

Hoist hose and nozzle

18

What is a slip knot used for

Secure hose bundles

19

How many arm lengths are used to chain link a utility rope

6 arm lengths

20

Usage for figure 8 knot

Stopper knot, to prevent rappelling off the end of the rope

21

Usage for figure 8 on a bight

To form an eye anywhere in a line; for anchoring, towing etc; unties easily once under a load

22

Usage for figure 8 follow through

to secure a line to an anchor or to join two lines of equal or unequal diameter

23

Usage double loop figure 8

To be used for anchoring systems having 2 or more points

24

When is the rope inspected

After each use

25

What are the 4 points to look for when inspecting rope

Dirt/foreign particles imbedded in rope fibers
Spot abrasions, broken fibers, brittle fibers
Soft spots
Inconsistencies in the rope diameter

26

How do we identify our ropes

Both ends shall be tagged with:
In-Service date
A/B ends
Length
Company #
Identification #

27

Ropes are to be inventoried for how long

6 years

28

What is the a running knot also know as

Hose knot