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Rigging Questions > Rigging Blue Star Pages > Flashcards

Rigging Blue Star Pages Flashcards

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Blue star pg 1

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88
Q

3 parts of Voice signals ?

A

Function and direction
Distance and or speed
Function stop

89
Q

Angle factors for rigging

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90
Q

Angle factors for rigging contin

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91
Q

Determine if the statement is true or false. The two types of wire rope center core designs are fiber core and independent wire rope core.

A

True

92
Q

What is the percentage gain in strength when using an iwrc versus a fiber corps rope?

A

7.5

93
Q

What characteristic increases in a wire rope by using a rope with more strands and more wires in the strands?

A

Flexibility

94
Q

Determine if this statement is true or false. Grade 110/120 improved plow steel has the highest tensile strength of any rope?

A

False

95
Q

A regular lay wire rope has strands and wires in the strands that?

A

Are laid in the opposite direction

96
Q

Due to its tendency to unwind, which wire rope should not be used on single part hoisting lines?

A

Lang lay

97
Q

Determine if this statement is true or false. A 6 x 19 wire rope classification could have as many as 16 to 26 wires per strand.

A

True

98
Q

Which wire rope classification is listed as non- rotating?

A

35 strand.

99
Q

When a non-rotating rope is used in a wedge care must be taken to prevent?

A

Core slippage

100
Q

A rotation resistant wire rope may have a smaller working load limit ( SWL ) than an equal size 6 x 37 iwrc because:

A

Rotating resistant requires higher working load limit

101
Q

When hoisting personnel on a crane equipped with rotating resistant wire rope what is the safety factor required by most safety standards?

A

10 : 1

102
Q

Newer designs of wire rope with shaped wires and triangular strands are an attempt to prevent rope damage from?

A

Multiple drum layers
Cross winding
Improper tensioning.

103
Q

Referring to the number of broken wires allowed in a wire rope. The “Rule of thumb” for determining placement is ?

A

3/6

104
Q

Limits of approach

A
105
Q

Quadrants of operation

A
106
Q

What are some factors affecting crane capacity?

A

Poor machine condition
Improper use of outriggers
Soft footing
Crane not level.

107
Q

List five conditions when a signaller would be required?

A

Power lines
Operator can’t see load
Path of travel not visible
Landing area not visible
Person may be endangered by load.

108
Q

Actual crane capacities are based on three factors. What are they?

A

Weight of the machine
Stability
Strength of components

109
Q

Wire rope strands should be replaced if the wear in the outer strand of wire exceeds?

A

1/3 diameter

110
Q

Determine If the following statement is true or false? When inspecting wire rope, interior broken wires and corrosion can be checked by magnetic particle testing.

A

True

111
Q

Corrosion of wire rope is usually caused from

A

Lack of lubrication

112
Q
A

Light mineral oil

113
Q

To avoid kinking wire rope when spooling it onto a drum from the shipping reel the operator should always:

A

Allow the reel to rotate freely.

114
Q

What is the rule of thumb formula to find the Ultimate load breaking strength of an iwrc wire rope?

A

D2 x 45

115
Q

When the ultimate load of a wire rope is divided by the safety factor the result is called the?

A

Working load limit (SWL)

116
Q

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

A

Nominal strength is reduced

117
Q

A 1 inch wire rope eye sling (no thimble) lifting a load with a 1 inch shackle will be approximately how efficient?

A

50%

118
Q

Referring to slings, the terms Rated Capacity or Working Load limit replaces the old terminology of what?

A

Safe working load

119
Q

What is the minimum Design Safety Factor for general sling use?

A

5 to 1

120
Q

Determine if this statement is true or false. A 4 legged bridle sling will always carry the load weight equally on all 4 legs.

A

False

121
Q

With an improved plow wire rope sling the preferred D/d basket hitch ratio is :

A

25 to 1

122
Q

Determine if this statement is true or false. A sling wrapped around a rectangular load in a basket is rated at the full basket hitch working load limit.

A

False

123
Q

When slinging a bundle of pipe or tuning, which of the following would provide the best contact between sling and load?

A

Two double wrap chokers

124
Q

Determine if this statement is true or false. Synthetic slings can be safely used under any environmental circumstances.

A

False

125
Q

Referring to the standard format of sling load charts the angle between the top of the load and the sling leg is called the ?

A

Horizontal angle

126
Q

Using two slings to lift a load, at what degree angle to the horizontal is the load on each sling considered to be actual weight of the load?

A

30

127
Q

What happens to the rigging hardware when sudden movements or shock loading occurs?

A

Increased load stress

128
Q

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

A

Straight pull

129
Q

Tapped hole must be how deep for eyebolt?

A

1 1/2 times the diameter of bolt

Rigging Questions (1 decks)

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