Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Fire > ropes > Flashcards

ropes Flashcards

1
Q

mechanical advantage

A

the ratio of the force applied to the load compared to the force applied to the input of the system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

high line tensioning formula

A

(span x load)/(4x sag)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

11mm high line, want __ sag

A

10%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

7mm (9/32) cord

A

10kn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

8mm (5/16) cord

A

3000lbs

15kn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

11mm (7/16) rope

A

30kn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

13mm (1/2) rope

A

40kn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

aluminum carabiner
L rated
G rated

A

L rated: 27kn

G rated; 40KN

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

steel caribiner

A

40kn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

pulley

A

36kn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

scarab

A

rope breaks at 26kn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

25mm tubular webbing

A

18kn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

25mm flat webbing

A

26kn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

w2p1 tub

A

25kn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

w3p2 tub

A

36kn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

radium release

A

35 kn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

tandem prussik

A

clutch at 10-14kn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

single prussik

A

clutch at 9-13kn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

ABCDE safety check

A

anchors, belay, carabiners, Decent Control Device, edge,

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

fall factor

A

length of the fall divided by the amount of rope between the rescuer, the anchor/ belayer. 2.0= 20ft fall with 10’ of rope to the anchor

21
Q

deceleration forces greater than ___ begin to produce spinal injuries

A

12kn

22
Q

don’t exceed a ___ fall factor

A

0.3 falling 1m on 3m of rope

23
Q

kern

A

core

24
Q

mantle

A

sheath

25
Q

5/8 (16mm) rope

A

57kn

26
Q

minimum breaking strength for rope in one/two system

A

4,500
9,000
10:1 safety factor

27
Q

12 things to check on a rope

A

unusual wear, cuts, exposed core, excessive wear on sheath, discoloration, burn marks, soft spots, kinks, bulges, inconsistent texture and flexibility, unequal thickness, excessive dirt

28
Q

ropes should be retired

6 things

A
  • excessive wear to sheath
  • when more than half of the outer sheath yarns are broken in one place
  • after severe shock
  • contaminated by chems
  • worn out from use or age
  • after 5yrs of service life
29
Q

1/2” rope should use ___ pussik cord

A

8mm

30
Q

test for pussiks on rope

A

pinch test: pinch pussik, more than cord dia space, too stiff

31
Q

triangular screw links

A

10,000lbs

45kn

32
Q

break bar: ___ bars should be used for single person

A

4

33
Q

540 rescue belay

A

70kn

34
Q

break rack

A

45+

35
Q

knots: leave ___ of tail

A

1.5-2”

36
Q

rescue knots are:

6 things

A

easy to tie and ID
will not work loose on their own
minimally reduce strengtht easy to untie
untied before storage

37
Q

bowline requires a safety knot. T/F

A

T

38
Q

water knot needs ___ tail

A

1”

39
Q

RRH is made up of

A

10m of 8mm cord and 2 biners

40
Q

Personal pussiks use two wraps ___ and three wraps on ___

A

foot prussiks

short chest prussik

41
Q

order of personal prussiks on rope from top to bottom

A

short, long, medium

42
Q

single picket
1-1-1
3-2-1

A

700lbf
1,800
4,000

43
Q

pickets are driven in ___ ft
at ___ angle
__ft apart with a ____ ft webbing

A

2 stable, 3 unstable
15
3
20

44
Q

simple pulley system

A

one rope with all pulleys travel at the same speed

45
Q

compound pulley system

A

one simple system working on another simple system

46
Q

complex pulley system

A

not simple or compound

ex: spanish burton

47
Q

static system safety factor

3 things to remember

A

10:1
material strength (1/3 lost due to knots)
vector angles
amount of load

48
Q

with load at center-span, max for on highline is a multiple of
-is 1/2” rope

A

12

18

49
Q

bailout hook and rope rating

A

hook: 13.5kn
rope: 17.4kn 3,900lbs

Fire (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions