Rigging Procedures - Part B

Question 1

What is the main problem with chains?

Answer 1

Chains gives little warning that they are about to break.

Question 2

Which can withstand shock loading? Chain or Wire Rope

Answer 2

Wire Rope but you should always try to avoid it when possible.

Question 3

How do you identify chain that is suited for hoisting?

Answer 3

A letter or number will be stamped on the side of the links.

Question 4

• How often should you inspect hoisting chains in regular use?
• What if not in regular use?

Answer 4

• Once a month
• Before every use

Question 5

What do most companies recommend chains have?

Answer 5

An identification tag with serial number, swl, and date it was put into use.

Question 6

Should you inspect a chain after a shock load?

Answer 6

Yes

Question 7

How do you inspect a chain?

Answer 7

• Clean with a solvent solution
• Use magnifying glass
• Remove any portion of the chain that is worn by 10% or more of the original diameter.
• Inspect for stretch

Question 8

At what percent should a link be removed

Answer 8

Worn by 10% of diameter

Question 9

• How do you inspect a bridle sling?
• When do you remove the chain out of service?

Answer 9

• Hang it up and compare the lengths.
• If the stretch is more than 5%

Question 10

How do you inspect for cracks in a chain?

Answer 10

• Soak part in thin oil, wipe dry and coat with a white powder such as chalk. After severial hours chalk will be discoloured by the penetrated oil.

Question 11

What is the general capacity?

Answer 11

Question 12

What is a chain sling load leveller?

Answer 12

Chain that allows the user to position the device by the use of two adjustable sling lengths.

Question 13

What type of steel do you use for hoisting?

What is it if not chain hoisting?

Answer 13

• Alloy Steel
• Decking Chain

Question 14

What procedure do you never do to Alloy Steel chains?

Answer 14

Annealing. Will destroy their capacity.

Question 15

Can grab hooks grab through chain links?

Answer 15

No

Question 16

Which Natural Fibre is okay to hoist with?

Answer 16

Number One Grade Manila

Question 17

Label these.

Answer 17

Fibres
Yarns
Strands
Right Lay Rope

Question 18

How is Fibre Rope Constructed?

Answer 18

By reverse-twisting method. Fibres are right hand twisted into yarn, several yarns are left hand twisted into strands. Then three or four strands are right hand twisted to form a right lay rope.

Question 19

What is the difference between hard laid, med laid and soft laid natural fibre rope?

Answer 19

How tightly the yarn and strands are tied together.

Question 20

Which has the highest tensile strength out of hard, med, soft laid.

Answer 20

Soft laid

Question 21

Which out of hard, med and soft laid provides the most abrasion resistance?

Answer 21

Hard Laid

Question 22

Which is stronger Synthetic or Natural Fibre Ropes?

Answer 22

Synthetic Fibre Ropes

Question 23

Does mildew and rot grow on Synthetic ropes?

Answer 23

No

Question 24

What are some pros of Nylon Rope?

Answer 24

Question 25

Name some pros for Polypropylene Rope

Answer 25

Question 26

What are Tucks?

Answer 26

Tucks relate to Fibre Ropes. Tucks are where the strands are passed through the other rope as in a short splice.

Question 27

Which needs more tucks Synthetic or Natural Fibre Ropes?

Answer 27

Synthetic

Question 28

What is Whipping?

Answer 28

Used on Natural Fibre Ropes where the ends are bound with fine twine to keep the ends from fraying.

Question 29

With Synthetic Fibre Ropes can you burn the ends so that the cut ends dont fray?

Answer 29

Yes

Question 30

What is Safety Factor?

Answer 30

Is the comparison of the Safe Working Load to the Breaking Strength expressed as a ratio.

Question 31

What is the usual rigging safety factor for Fibre Ropes?

Answer 31

5

Question 32

What is the definition of a Hitch?

Answer 32

Formed by fastening a rope to an object, such as a ring, hook or post.

Question 33

What is the definition of a Bend? Regarding ropes.

Answer 33

Formed by intertwining two rope end, either of the same rope to make one endless rope or of two different ropes to make one continous rope.

Question 34

Give the strengths

Answer 34

Question 35

What are Bowlines used for?

Answer 35

Hoisting, for Safety Lines and for Hitching around posts.

Question 36

What is Bowline On The Bight used for?

Answer 36

Used to tie a Bowline in the centre of a line to make a set of double sling legs.

Question 37

What is a Clove Hitch used for?

Answer 37

Fastening a rope to a post or a pipe.

Question 38

Name 11 knots for rope.

Answer 38

- Bowline - Bowline On The Bight - Running Bowline - Self-Centring Bowline - Figure Of Eight Knot - Clove Hitch - Round Turn and Two Half-Hitches - Timber Hitch - Sheet Bend - Carrick Bend -Catspaw

Question 39

What is also known as Chain Fall?

Answer 39

Chain Hoists

Question 40

Where do you find the lifting capacity of Chain Hoists?

Answer 40

On their side

Question 41

What is the most efficient manual Chain Hoist?

Answer 41

Spur-geared Chain Hoist

Question 42

What is this?

Answer 42

Spur-Geared Chain Hoist

Question 43

What is another name for Come Along?

Answer 43

Lever Hoist

Question 44

What is a Tirfor?

Answer 44

A hand operated winch

Question 45

What is a Bottle Jack

Answer 45

A jack that has a built-in pump.

Question 46

What is this called?

Answer 46

Porta Power Jack - Has a separate pump

Question 47

What must be done when suspending a load for extended periods of time?

Answer 47

Blocking must be used under the load.

Question 48

When must there must be a signalman for a crane operator.

Answer 48

- The operator cannot see the load or the landing area - the distance between the load and the operator is great enough that it is difficult for the operator to judge the distance - The crane is within a booms length of electrical lines - The operator does not have a clear view of the path to be taken

Question 49

What do these mean

Answer 49

- Stop - Emergency Stop - Dog Everything

Question 50

What do these mean?

Answer 50

Question 51

What do these mean?

Answer 51

Question 52

What do these mean?

Answer 52

Question 53

What do these mean?

Answer 53

Question 54

What do these mean?

Answer 54

Question 55

What is the knot or bend used for tying two ropes of different diameters together.

Answer 55

Sheet Bend

Question 56

What is the percentage of rope strength when a hitch is used?

Answer 56

75%

Question 57

What are these?

Answer 57

Equilizer Beams

Question 58

What is this?

Answer 58

Spreader Beam

Question 59

What do you add to ensure a turnbuckle will not loosen? What does not work?

Answer 59

- Lock-wire - Lock-nuts and jam nuts

Question 60

What do you apply to turnbuckles with hooks?

Answer 60

Mousing

Question 61

When ising a shackle with eye bolts ensure what?

Answer 61

The angle of lift is 45 or bigger. 90 is perfect.

Question 62

All eye bolts should be made out of what?

Answer 62

Forged alloy steel

Question 63

What percent of load can this carry

Answer 63

80% of rated load

Question 64

What percent of load can this carry?

Answer 64

40% of rated load

Question 65

What is the equation for u -bolt spacing?

Answer 65

Rope diameter x 6 = clip spacing

Question 66

All wire rope eyes must have what?

Answer 66

Thimbles

Question 67

How much percentage of efficitency does a swaged socket have? Have many wires do you need broken before it is thrown out?

Answer 67

- 100%. - one

Question 68

How do you install a wedge socket? How many spare inches of rope do you need a the end?

Answer 68

6-9 inches

Question 69

How much efficiency does a Cappel Socket have? What do they allow?

Answer 69

- 100% - Easy inspection

Question 70

How efficient are poured sockets and what are the steps?

Answer 70

100%

Question 71

For over head lifting you use ________ end fittings?

Answer 71

Forged

Question 72

What should you not do when unwinding a spool of wire rope?

Answer 72

Do not unwide one spool wrap at a time. It may kink.

Question 73

How many wraps should always be left on a wire rope drum?

Answer 73

3

Question 74

Answer.

Answer 74

D)

Question 75

Answer

Answer 75

A)

Question 76

Answer

Answer 76

C)

Question 77

Answer

Answer 77

C)

Question 78

Answer

Answer 78

D)

Question 79

Answer

Answer 79

C)

Question 80

Answer

Answer 80

B)

Question 81

Answer

Answer 81

B)

Question 82

Answer

Answer 82

C)

Question 83

Answer

Answer 83

A)

Question 84

Answer

Answer 84

D)