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School > Rigging Procedures - Part B > Flashcards

Rigging Procedures - Part B Flashcards

1
Q

What is the main problem with chains?

A

Chains gives little warning that they are about to break.

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2
Q

Which can withstand shock loading? Chain or Wire Rope

A

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

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3
Q

How do you identify chain that is suited for hoisting?

A

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

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4
Q
  • How often should you inspect hoisting chains in regular use?
  • What if not in regular use?
A
  • Once a month
  • Before every use
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5
Q

What do most companies recommend chains have?

A

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

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6
Q

Should you inspect a chain after a shock load?

A

Yes

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7
Q

How do you inspect a chain?

A
  • 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
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8
Q

At what percent should a link be removed

A

Worn by 10% of diameter

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9
Q
  • How do you inspect a bridle sling?
  • When do you remove the chain out of service?
A
  • Hang it up and compare the lengths.
  • If the stretch is more than 5%
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10
Q

How do you inspect for cracks in a chain?

A
  • 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.
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11
Q

What is the general capacity?

A
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12
Q

What is a chain sling load leveller?

A

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

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13
Q

What type of steel do you use for hoisting?

What is it if not chain hoisting?

A
  • Alloy Steel
  • Decking Chain
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14
Q

What procedure do you never do to Alloy Steel chains?

A

Annealing. Will destroy their capacity.

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15
Q

Can grab hooks grab through chain links?

A

No

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16
Q

Which Natural Fibre is okay to hoist with?

A

Number One Grade Manila

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17
Q

Label these.

A

Fibres
Yarns
Strands
Right Lay Rope

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18
Q

How is Fibre Rope Constructed?

A

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.

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19
Q

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

A

How tightly the yarn and strands are tied together.

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20
Q

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

A

Soft laid

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21
Q

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

A

Hard Laid

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22
Q

Which is stronger Synthetic or Natural Fibre Ropes?

A

Synthetic Fibre Ropes

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23
Q

Does mildew and rot grow on Synthetic ropes?

A

No

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24
Q

What are some pros of Nylon Rope?

A
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25
Q

Name some pros for Polypropylene Rope

A
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26
Q

What are Tucks?

A

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

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27
Q

Which needs more tucks Synthetic or Natural Fibre Ropes?

A

Synthetic

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28
Q

What is Whipping?

A

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

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29
Q

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

A

Yes

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30
Q

What is Safety Factor?

A

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

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31
Q

What is the usual rigging safety factor for Fibre Ropes?

A

5

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32
Q

What is the definition of a Hitch?

A

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

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33
Q

What is the definition of a Bend? Regarding ropes.

A

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.

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34
Q

Give the strengths

35
Q

What are Bowlines used for?

A

Hoisting, for Safety Lines and for Hitching around posts.

36
Q

What is Bowline On The Bight used for?

A

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

37
Q

What is a Clove Hitch used for?

A

Fastening a rope to a post or a pipe.

38
Q

Name 11 knots for rope.

A
  • 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
39
Q

What is also known as Chain Fall?

A

Chain Hoists

40
Q

Where do you find the lifting capacity of Chain Hoists?

A

On their side

41
Q

What is the most efficient manual Chain Hoist?

A

Spur-geared Chain Hoist

42
Q

What is this?

A

Spur-Geared Chain Hoist

43
Q

What is another name for Come Along?

A

Lever Hoist

44
Q

What is a Tirfor?

A

A hand operated winch

45
Q

What is a Bottle Jack

A

A jack that has a built-in pump.

46
Q

What is this called?

A

Porta Power Jack

  • Has a separate pump
47
Q

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

A

Blocking must be used under the load.

48
Q

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

A
  • 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
49
Q

What do these mean

A
  • Stop
  • Emergency Stop
  • Dog Everything
50
Q

What do these mean?

51
Q

What do these mean?

52
Q

What do these mean?

53
Q

What do these mean?

54
Q

What do these mean?

55
Q

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

A

Sheet Bend

56
Q

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

57
Q

What are these?

A

Equilizer Beams

58
Q

What is this?

A

Spreader Beam

59
Q

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

What does not work?

A
  • Lock-wire
  • Lock-nuts and jam nuts
60
Q

What do you apply to turnbuckles with hooks?

61
Q

When ising a shackle with eye bolts ensure what?

A

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

62
Q

All eye bolts should be made out of what?

A

Forged alloy steel

63
Q

What percent of load can this carry

A

80% of rated load

64
Q

What percent of load can this carry?

A

40% of rated load

65
Q

What is the equation for u -bolt spacing?

A

Rope diameter x 6 = clip spacing

66
Q

All wire rope eyes must have what?

67
Q

How much percentage of efficitency does a swaged socket have?

Have many wires do you need broken before it is thrown out?

68
Q

How do you install a wedge socket?

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

A

6-9 inches

69
Q

How much efficiency does a Cappel Socket have?

What do they allow?

A
  • 100%
  • Easy inspection
70
Q

How efficient are poured sockets and what are the steps?

71
Q

For over head lifting you use ________ end fittings?

72
Q

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

A

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

73
Q

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

74
Q

Answer.

75
Q

Answer

76
Q

Answer

77
Q

Answer

78
Q

Answer

79
Q

Answer

80
Q

Answer

81
Q

Answer

82
Q

Answer

83
Q

Answer

84
Q

Answer

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