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Rigging > Review > Flashcards

Review Flashcards

Test

1
Q

how do you determine that Manila rope may be used for rigging purposes?

A

By the color of the strand

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2
Q

list three natural fibers rope materials?

A

Vanilla, cotton, hemp

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3
Q

what Lay of rope is generally recommend for rigging purposes?

A

Regular Lay

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4
Q

Rope is sized by its?

A

outside diameter

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5
Q

How should rope be stored?

A

in a moisture free container

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6
Q

what type of knot is used when running it through a pully?

A

Eye splice

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7
Q

safe working load formula for wire rope is?

A

D^2x45

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8
Q

to prevent fraying of a rope you can_

A

whipping or seizing

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9
Q

when cutting synthetic wire rope By Flame cutting or melting what two precautions should be taken?

A

melting material and inhaling flames

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10
Q

what splice is used for making a permanent loop at the end of the line

A

Eye splice

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11
Q

what are the four major requirements for rope fastening

A

it will not slip
knot is strong and suitable for the job
easy to tie
easy to untie

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12
Q

what is the best knot to use to keep the end of a rope from running out of a tackle or pulley

A

A figure eight knot

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13
Q

what type of knot should not be used to hoist pipe

A

clove hitch

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14
Q

another term for square knot is

A

Reef knot

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15
Q

most commonly Miss tide knot is

A

a square knot for a reef knot

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16
Q

commonly mistaken by a square knot

A

a granny knot

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17
Q

what is the purpose of a bowline on a Bight

A

to have a loop anywhere on the rope

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18
Q

most of the wire selected for making wire rope is made from two grades of Steel name these two grades and provide their tensile strength

A

IPS 240,000 lbs per square inch

EIPS 10% more than IPS

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19
Q

what is the purpose of a sheet Bend

A

ting two unequal size rope together

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20
Q

what are the five purposes for the core of a wire rope

A 
maintain its shape
prevent strands from rubbing against each other 
absorbing shock
adds 7 to 10% strength 
lubrication
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21
Q

what about the construction of wire rope determines its flexibility

A

the number of strands

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22
Q

what is the definition of lay as its used regarding rope

A

Olay is the distance it takes to make one complete Revolution with a strand

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23
Q

multiple Part slings are referred to as

A

bridles or spreaders

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24
Q

When selecting sling types and sizes what eight factors should it be based on

A 
wieght of load
shape and balance
how to lift it
size of load
overhead room
environment 
it's load capacity 
is marrying the material possible
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25
Q

three basic hitches

A

a basket hitch a straight hitch and double hitch

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26
Q

slings that are damaged or defective can be used on lighter loads

A

slings should always be taken out of service when damaged or defective

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27
Q

the surrounding area of a load to be hoisted by helicopter should be cleared of debris within how many feet

A

100 feet

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28
Q

list of PPE required for helicopter lift

A

chin straps rubber gloves light clothing eye protection

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29
Q

what is a crane?

A

mechanical means to move heavy loads safely

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30
Q

before starting to hoist note the following conditions?

A

the Hoist rope shall not be kinked

the multiple part line shall not be wrapped on each other

the hook shall be brought over the load in such a manner as to prevent swinging

the tagline she’ll be a fix to all those prevent on leveling or control swing of objects to be hosted

a cranes footing shoulb be level within 1 degree

the pic should be within five degrees

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31
Q

Journey workers must be competent and should know the following

A

establish wieght
judge distance
select table and load
rig safely

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32
Q

who is General responsible for the safety of a lifting operation as soon as load is lifted

A

the crane operator

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33
Q

What distance must be maintained from a high-voltage source by a crane

A

15 feet

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34
Q

when are bells or whistles used as signals

A

on a blind pick

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35
Q

what type of chain Hoist is commonly used in our trade

A

a spur gear

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36
Q

never use a chain hoist for a

A

horizontal pull

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37
Q

when do you due a visual inspection of hardware or rigging equipment

A

Before AND after

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38
Q

counting the number of supporting ropes of a block and tackle gives you the

A

mechanical advantage

39
Q

what is the lower block of the crane called

A

the main block

40
Q

what Jack type has the simplest Construction

A

she ratchet Jack

41
Q

what type of Jack is used for loads over 25 tons

A

a screw jacks

42
Q

metal to metal jacking

A

is never permitted

43
Q

when using Jacks in a horizontal position to move an object the Jack should be

A

tied up

44
Q

the diameter of the loop formed in a wire rope should be?

A

eight times the diameter of rope

45
Q

an eye formed by wire rope clips provides what rated capacity

A

80%

46
Q

the space between wire rope clips should be equal how many times the diameter of the Rope

A

6 times

47
Q

what metal is used to pour the sockets of fittings joining wire ropes

A

zinc

48
Q

a hook should be painted

A

never

49
Q

what type of shackle is most commonly used in our trade

A

anchor Bow shackles

50
Q

how do you determine the size of a shackle

A

by the size of the bow

51
Q

what is the 3/6 rule

A

3 broken wires in one strand or six broken wires randomly distributed among all strands within one lay length

52
Q

how is load radius of a crane determined

A

the crane manual

53
Q

The Single Leg of a bridle sling should be able to carry

A

the entire load

54
Q

where is the slewing ring located on a fixed Tower configuration

A

on the top of the tower

55
Q

what should be used if more than one lifting cable is to be handled by a chain hoist

A

Shackle

56
Q

when drifting loads the angle it should not exceed how many degrees from vertical

A

30 degrees

57
Q

the weakest part of a chain hoist or chain fall is

A

bottom of the hook

58
Q

what are four basic types of jacks

A

hydraulic
rachet
screwed
pneumatic

59
Q

wire core is how many times stronger than fiber core

A

7 1/2 times stronger

60
Q

wich wire rope class is listed as non rotating?

A

35 strand

61
Q

wich class of wire rope is listed as spin resistant?

A

8 strand wire rope

62
Q

wich class of wire rope is listed as rotation resistant?

A

19 strand wire rope

63
Q

wire rope should be replaced if the wear in the outer strand wires exceeds?

A

1/3 of its original diameter

64
Q

wich product is suitable for lubricating wire rope?

A

light mineral oil

65
Q

what happens when a wire rope is bent around a sheave or hook?

A

nominal strength is reduced

66
Q

1 inch wire rope eye sling lifting a load with a 1 inch shackle will be approximately how efficient?

A

50 %

67
Q

with in “improved plow” wire rope sling the preferred D/d basket hitch ratio is

A

25 to 1

68
Q

shackles are only rated for their maximum capacity when used for what type of pull

A

straight line pull

69
Q

with two shackles or eye sling eyes in a hook, what is the suggested maximum included lifting angle?

A

90°

70
Q

a wedge socket must be attached with the load line pulling in a straight line pull from the?

A

Pin

71
Q

custom fabricated lifting beams or any homemade lifting device must be?

A
  1. designed by an engineer
  2. have a rated capacity clearly stamped
    3 be test lifted at 125% of its rated capacity
72
Q

what is the mechanical advantage ratio created on the top fixed sheave of six block hoisting system?

A

none

73
Q

when determining the number of parts of a line needed for rigging a system. what unknown factor makes the use of a ratio chart a necessity?

A

friction

74
Q

if the wire rope hoist line coming off a drum is fed into a sheave how must the sheave be positioned?

A

aligned with the fleet angle

75
Q

what’s the fleet angle on a grooved drum?

A

2° fleet angle

30 feet from half the drums width per ft

76
Q

what’s the fleet angle of a smooth drum?

A

1 1\2° fleet angle

40 ft for half the drums width per ft

77
Q

air operator taggers remove moisture in the lines by

A

blowing them out first

78
Q

the most commonly used grade of natural fibers rope is ?

A

Manila

79
Q

knots in fiber rope reduce strength by?

A

50%

80
Q

which splice is used when forming an eye around fiber rope?

A

side splice?

81
Q

which not can be used as a rescue knot?

A

Spanish bowline

82
Q

what’s known as the killer knot?

A

reef knot or square knot

83
Q

critical lift conditions?

A
  1. when lift is over operating or electrical equipment
    2.when modified crane or equipment is needed
    3.the wieght of the load exceeds set limits
    2 cranes
  2. any laid over 75% cranes capacity
84
Q

short splice?

A

short splice doubles the diameter

85
Q

what knot doubles the diameter?

A

short splice

86
Q

Eye or side splice

A

to make eyes in fiber rope

87
Q

knot that makes eyes in fiber rope

A

Eye or side splice

88
Q

three parts of a rope

A
  1. running end
  2. bight
  3. standing end
89
Q

knot to rig pipe with rope?

A

pipe hitch

90
Q

catspaw

A

to attach load to hook?

91
Q

on a four part pick, how many slings are holding the load?

A

two slings

92
Q

to invert a load you want the heaviest part of a load to be ?

A

on the bottom

93
Q

sheave diameter rule

A

20 times the diameter of rope

94
Q

alloy of a lifting chain

A

88 or 8

8

Rigging (1 decks)

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