Rigging PART A

Question 1

Only One type of natural fibre rope is sturdy enough for lifting what is it

Answer 1

Number one grade manila

Question 2

Fibre rope is constructed by what method

Answer 2

Reverse twisting

Question 3

How are ropes formed

Answer 3

Fibres right hand twisted into yarn, several yarns are left hand twisted into strands. Then 3or 4 strands are right hand twisted to form a right lay rope. Reversing this is a left lay rope

Question 4

What rope is used for most general purposes

Answer 4

Medium-lay rope

Question 5

These ropes provide more abrasion resistance

Answer 5

Hard lay ropes

Question 6

These ropes have higher tensile strengths

Answer 6

Soft lay ropes

Question 7

Two types of synthetic fibre rope commonly used

Answer 7

Nylon and polypropylene

Question 8

What synthetic rope is excellent for use in such industrial applications as anchor and tie up lines tag lines and couplers and safety ropes

Answer 8

Nylon

Question 9

Rope is light in weight, does not absorb moisture, and floats on water, and the most popular rope available

Answer 9

Polypropylene rope

Question 10

What does it mean when a yard is broken

Answer 10

The rope has been overloaded and is not safe for hoisting

Question 11

If a rope is frozen do you let it thaw before using

Answer 11

Yes

Question 12

Cutting a natural rope what do you do

Answer 12

Ends must be taped or whipped with fine twine

Question 13

How efficient is a rope with a knot in it

Answer 13

50%

Question 14

How efficient is a straight line pull

Answer 14

100%

Question 15

How big does a sheaves diameter need to be greater than the ropes diameter

Answer 15

6-10x

Question 16

T or F the plumbing industry tends to use wire rope as lashing

Answer 16

True

Question 17

Ropes with many wires to a strand have a good resistance to what

Answer 17

Bending fatigue

Question 18

Wire rope grade Used where maximum tensile strength is required, such as mine shaft hoisting

Answer 18

Grade 120/130 - special improved plow type 11

Question 19

Wire rope Used where a higher ultimate load (UL-BS) is required

Answer 19

Grade 115/125- special improved plow type 1

Question 20

The grade most commonly used for wire rope, it combines tensile strength wear resistance and fatigue resistance

Answer 20

Grade 110/120 improved plow

Question 21

Wire rope that Has excellent wear and fatigue resistance but a lower tensile strength

Answer 21

Grade 100/110- plow

Question 22

What method is used for constructing fibre rope

Answer 22

Reverse twisting

Question 23

How to calculate working load limit

Answer 23

Diameter squared X 8= WLL in tons

Question 24

Type of connection recommended in all hoisting slings with a sling eye

Answer 24

Flemish eye plus a pressed metal sleeve

Question 25

Synthetic webbing slings are weakened and damaged by

Answer 25

Repeated use of hoisting rough and sharp edged objects

Question 26

The preferred material for synthetic webbing slings

Answer 26

Nylon

Question 27

Capacity of a double ply sling over a single ply sling

Answer 27

140% -200%

Question 28

Chain that is suitable for construction hoisting is stamped with what

Answer 28

Identifying letter or number in the links Usually letters A and T or versions of the number 8 as 80 or 800

Question 29

Chains in regular use should be checked how often

Answer 29

Once a month

Question 30

If a chain is subjected to shock or impact loads what do you do

Answer 30

Inspect it immediately before putting back in service

Question 31

Using what will make your chain inspection efficient

Answer 31

Use a magnifying glass

Question 32

What percent of chain wear do you replace slings

Answer 32

10% or more

Question 33

What do you do if a chain has stretched by 3%

Answer 33

Inspect carefully

Question 34

If the chain is stretched more than 5%

Answer 34

Chain should be removed from service

Question 35

Definition: formed when the end of the rope intertwined within a section of the rope

Answer 35

Knot

Question 36

Rope term: formed by intertwining two rope ends

Answer 36

Bend

Question 37

Rope term: formed by fastening a rope to an object, such as a ring, hook or post

Answer 37

Hitch

Question 38

Rope term: made by joining the ends of two ropes

Answer 38

Splice

Question 39

How much does a knot in a rope affect its strength ?

Answer 39

50%

Question 40

 How much does a bend in the rope affect the strength? 

Answer 40

50%

Question 41

What does a hitch in a rope affect the strength? 

Answer 41

Reduces strength by 25%

Question 42

How much does a splice reduce rope strength?

Answer 42

Reduced 20%

Question 43

This knot does not slip easily 

Answer 43

Bowline knot

Question 44

 this knot is used for hoisting, safety lines and for hitching around posts and rings

Answer 44

Bowline knot 

Question 45

This knot is used for tying two ropes together that are equal equal diameter or for making a secure loop in the end of the rope

Answer 45

Figure of eight knot

Question 46

 This hitch is used for fastening a rope to a post or pipe 

Answer 46

Clove hitch

Question 47

This hitch is strong and virtually slip proof useful for securely attaching a rope to a post or column 

Answer 47

Round turn and 2 half hitches

Question 48

This hitch is mainly used for lowering or hoisting, planks, pipe tube and bars 

Answer 48

Timber hitch

Question 49

This bend is used to join lightweight to medium weight ropes of two different diameters 

Answer 49

Sheet bend

Question 50

This bend is one of the strongest knots and can be used for securely joining together large diameter ropes 

Answer 50

Carrick bend

Question 51

This hitch is used for attaching a rope to a hook 

Answer 51

Catspaw

Question 52

These hoists are used to lift loads in a straight line vertical position 

Answer 52

Chain hoists

Question 53

In this chain hoist the difference in the number of pockets is the differential 

Answer 53

Differential chain hoist

Question 54

These chain hoist are more expensive than differential hoists

Answer 54

Screw geared chain hoist

Question 55

This chain was uses two separate chains. One is an endless chain.

Answer 55

Screw geared chain hoist

Question 56

The most efficient type of manual chain hoist, but also the most expensive

Answer 56

Spur geared chain hoist

Question 57

This device is useful for short, vertical and horizontal pulls

Answer 57

Come along

Question 58

Typically, the most abused piece of equipment

Answer 58

Come along

Question 59

a cable winch that uses a draw vise design and permits unlimited wire rope travel 

Answer 59

Tirfor

Question 60

The winch can only be used on the horizontal plane

Answer 60

Tirfor winch

Question 61

This block is used to change the direction of pole on a wire rope

Answer 61

Snatch block

Question 62

The tap screw bolts must have the minimum depth of what the diameter of the

Answer 62

1.5x

Question 63

How is a shackle sized

Answer 63

The diameter of the bow section

Question 64

What direction pulls are shackles intended to be used? 

Answer 64

Vertical

Question 65

At what percent do you destroy shackles? 

Answer 65

Worn in the crown Or in the pin by more than 10% of the original

Question 66

All lifting hooks except grab chain and sorting hooks should be fitted with what

Answer 66

Safety latches

Question 67

When two more slings to be used, the slings must go to a what

Answer 67

Shackle or ring

Question 68

These devices counter the twisting of rigging when hoisting

Answer 68

Swivels

Question 69

Crane hooks with a single part line should use this device

Answer 69

Headache ball

Question 70

This device is used to attach the headache ball

Answer 70

 wedge socket

Question 71

Angular pulls should be avoided on these clamps

Answer 71

Beat clamp

Question 72

How do you calculate the amount of u bolt saddle type clips

Answer 72

Rope diameter x3 + one to next whole number