Brainscape's Knowledge GenomeTM

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


See full index

Crane Op Level 1 > Wire Rope And Rigging > Flashcards

Wire Rope And Rigging Flashcards

1
Q

Define Abrasion

A

Wearing, grinding, or rubbing away by friction.

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

Define Corrosion

A

Gradual wearing of wire rope by chemical action (rust, acids)

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

Define Grade

A

Wire rope or strand classification by strength and/or type of material.

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

Define Carbon Steel

A

Hardened steel, not alloyed with other metals

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

Define Fatigue

A

Progressive fracture resulting from the repeated bending of individual wires in a wire rope; may be accelerated by rust, lack of lubrication, etc

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

Define Tensile Strength

A

Greatest longitudinal stress an object can withstand without tearing apart

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

What word would describe ‘hardened steel, not alloyed with other metals’?

A

Carbon Steel

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

What word would describe ‘wire rope or strand classification by strength and/or type of material’?

A

Grade

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

What word would describe ‘wearing, grinding, or rubbing away by friction’?

A

Abrasion

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

What word would describe ‘progressive fracture resulting from the repeated bending of individual wires in a wire rope’?

A

Fatigue

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

What word would describe ‘greatest longitudinal stress and object can withstand without tearing apart’

A

Tensile Strength

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

What word would describe ‘gradual wearing of wire rope by chemical action’

A

Corrosion

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

What are the three wire rope components?

A

Core, Wires, Strands

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

What is the purpose of the core in a wire rope?

A

Forms the foundations for the strands

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

What is the purpose of the wires in a wire rope?

A

Forms the strands and collectively provide rope strength. Some strand designs require a “centre wire” around which other wires are wound to form a strand.

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

What is the purpose of strands in a wire rope?

A

Made up of multiple wires, laid helically (spiraled) around the core

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

Why is the core so important?

A

The core is the heart of a wire rope around which the main rope strands are laid. The core keeps the strands from jamming against or contracting each other under normal loads and flexing.

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

What are the three types of wire rope cores?

A

Fibre, Wire Strand Cord WSC, and Independent Wire Rope Core IWRC

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

What is the most common type of wire rope core?

A

IWRC

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

What are the advantages of IWRC?

A

Stretch less than fibre cores, better resistance to crushing loads, not affected by high temperatures, increases strength and weight of the wire rope.

21
Q

WSC has what type of core?

A

Same pattern as the strands.

22
Q

IWRC has what type of core?

A

Independent rope constructed of Lang lay strands. Core may be same pattern as wire rope.

23
Q

What is the benefit of Lang lay strands?

A

More wires = more tensile strength, more flexible, stronger.

24
Q

Define Preformed

A

Wires and strands are shaped helically during the manufacturing process in order to fit in the finished wire rope.

25
Q

What is the benefit of Preforming?

A

Eliminates built-in stress, resulting in better performance and greater durability.

26
Q

What is most wire rope made from?

A

Improved Plow Steel (IPS) a cold drawn carbon steel

27
Q

What is the tensile strength of IPS?

A

Between 240,000 and 260,000 psi

28
Q

Increasing the grade of steel from which wire rope is made increases its breaking strength by ____

A

10%

29
Q

What is EEIPS?

A

Extra extra improved plow steel

30
Q

What is EIPS?

A

Extra improved plow steel

31
Q

How do you determine the Grade of a rope?

A

It can only be determined by the manufacturer.

32
Q

True or False: The size and number of wires in a strand must be balanced between large and small wires?

A

True

33
Q

Are wires with smaller or larger strands more flexible?

A

Smaller strands.

34
Q

What are the four types of strand construction?

A

Single Layer/Ordinary, Filler Wire, Seale, Warrington

35
Q

What is Warrington wire rope designed for?

A

Boom Hoist

36
Q

What is Seale wire rope designed for?

A

Hauling and Rotary

37
Q

What is Filler wire rope designed for?

A

Load lines

38
Q

What is Ordinary rope designed for?

A

Slings

39
Q

What are the two characteristics of Ordinary rope?

A

All wires are the same size, good resistance to abrasion

40
Q

What are the two characteristics of Seale rope?

A

Resistant to abrasion and crushing, medium fatigue resistance.

41
Q

What are the two characteristics of Filler rope?

A

Less abrasion resistance, more bending fatigue resistance

42
Q

What are the two characteristics of Warrington rope?

A

Good balance of abrasion and fatigue resistance, high structural strength

43
Q

IWRC is __% stronger

A

7.5%

44
Q

What is the main difference between Langs lay and Regular lay?

A

Lang goes with the flow of the strands, regular goes the opposite of the strands.

45
Q

Which is more bendy, and which is stronger, Langs lay or regular lay?

A

Langs lay: more bendy
Regular lay: stronger

46
Q

Can you have a rope with both langs lay and regular lay?

A

Yes, it is called “alternate lay”

47
Q

What are regular lay ropes used for? And why?

A

Hoist lines and slings because they are more resistant to crushing.

48
Q

How do you determine rope lay distance?

A

The distance that it takes for one strand to make one “complete revolution” around the core.

49
Q

What are the four types of wire rope classifications?

A

Course lay, flexible, extra flexible, special flexible

Crane Op Level 1 (1 decks)

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