rigging hardware

Question 1

Determine If this statement is true or false. The two types of wire rope center core designs are fiber core and independent wire rope core.
1. true
2. false

Answer 1

1. true

page 74

Question 2

What is the percentage gain in strength using an IWRC
versus a fiber core wire rope?
1. 3.5
2. 5.5
3. 7.5
4. 9.5

Answer 2

3. 7.5

page 75

Question 3

What characteristic increases in a wire rope by using a rope with more strands and more wires in the strands?
1. rigidity
2. breaking strength
3. lubrication
4. flexlblllty

Answer 3

4. flexlblllty

page 75

Question 4

Determine if this statement is true or false. Grade 110/120 Improved Plow steel has the highest tensile strength for any type of wire rope.
1. true
2. false

page 76

Answer 4

2. false

page 76

Question 5

A regular lay wire rope has strands and wires in the
strands that:
1. are all laid in the right hand direction
2. are all laid in the left hand direction
3. wires and strands laid In opposite directions
4. wires and strands laid in the same direction

Answer 5

3. wires and strands laid In opposite directions

page 77

Question 6

Due to its tendency to unwind, which wire rope should NOT be used on smgle part hoisting lines?
1. regularlay
2. lang lay
3. alternate lay
4. none of above

Answer 6

2. lang lay

page 77

Question 7

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.
1. true
2. false

Answer 7

1. true

page 78,79

Question 8

Which rotation-resistant wire rope classification is non-rotating?
1. 3 strand
2. 8 strand
3. 19 strand
4. 35 strand

page 80

Answer 8

4. 35 strand

page 80

Question 9

When a non-rotating rope is used in a wedge socket, care must be taken to prevent:
1. core slippage
2. ropefromunraveling
3. wireslippage
4. strandslippage

page 81

Answer 9

1. core slippage

page 81

Question 10

When hoisting personnel on a crane equipped with rotating resistant wire rope, what is the Design (safety) Factor required by most safety standards?
1. 3.5:1
2. 5:1
3. 7:1
4. 10:1

page 81

Answer 10

4. 10:1

page 81

Question 11

Newer designs of wire rope with shaped wires and triangular strands are an attempt to prevent rope damage from:
1. multiple drum layers
2. cross winding
3. improper tensioning
4. all of the above

page 83

Answer 11

4. all of the above

page 83

Question 12

Referring to the number of broken wires allowed in a wire rope, The “Rule of Thumb” for determining replacement is:
1. 2/6
2. 3/6
3. 4/8
4. 2/12

page 84

Answer 12

3/6

page 84

Question 13

Wire rope should be replaced if the wear in the outer strand wires exceeds:
1. 1/16 of original diameter
2. 1/8 of orig,nal diameter
3. 1/3 of original diameter
4. 1/4 of original diameter

page 85

Answer 13

3. 1/3 of original diameter

page 85

Question 14

When spooling wire rope from a reel to the bottom of a crane or hoist drum. the wire rope must come off which part of the reel?
1. top
2. bottom

page 87

Answer 14

2. bottom

page 87

Question 15

When standing behind a drum being overwound wath
Right Lay Wire Rope, and using the fist method to determine the correct position of the end connection and the winding procedure, the hand would be:
1. right hand palm down
2. right hand palm up
3. left hand palm down
4. left hand palm up

page 87,88

Answer 15

1. right hand palm down

page 87,88

Question 16

If the wire rope hoist line coming off a drum is fed into a sheave, how must the sheave be positioned:
1. aligned with the proper fleet angle
2. aligned with the left drum flange
3. aligned with the right drum flange
4. depends on the rope lay

page 89

Answer 16

1. aligned with the proper fleet angle

page 89

Question 17

Determine if this statement is true o rfalse. Before using an air operated tugger, the air line should be blown out to remove excess moisture.
1. true
2. false

page 93

Answer 17

1. true

page 93

Question 18

What is the Rule of Thumb formula to find the Ultimate Load (breaking strength) of an IWRC wire rope?
1. D2 x 42
2. D2 x 45
3. D2 x 5
4. D2 X 10

Answer 18

2. D2 x 45

Question 19

When the Ultimate Load (breaking strength) of a wire rope is divided by a safety (design) factor the result is called the:
1. ultimate tensile load
2. nominal strength of rope
3. yield strength of rope
4. working load limit (WLL)

page 97

Answer 19

4. working load limit (WLL)

page 97

Question 20

What happens when a wire rope is bent around a sheave or a hook?
1. nominal strength does not change
2. nominal strength is reduced
3. outside strands are ln compression
4. Inside strands are in tension

Page 99, 100

Answer 20

2. nominal strength is reduced

Page 99, 100

Question 21

A 1 inch wire rope eye sling (no thimble) lifting a load with a 1 inch shackle will be approximately how efficient?
1. 100%
2. 75%
3. 50%
4. 25%

page 99, 100

Answer 21

3. 50%

page 99, 100

Question 22

Referring to slings, the terms “RatedCapacity” or
“Working Load Limit” replaces the old terminology of:
1. safety factor
2. breaking strength
3. rule of thumb
4. safe working load

page 101

Answer 22

4. safe working load

page 101

Question 23

What is considered the minimum Design (safety) Factor tor general sling use?
1. 3 to 1
2. 5 to 1
3. 7 to 1
4. 10 to 1

page 101

Answer 23

2. 5 to 1

page 101

Question 24

Determine if this statement Is true or false. A 4-leg bridle sling will carry the load weight equally on all 4 legs If the load is rigid.
1. true
2. false

page 103

Answer 24

2. false

page 103

Question 25

With an ''improved plow" wire rope sling, the preferred D/d basket hitch ratio is: 1. 25 to 1 2. 20 to 1 3. 15 to 1 4. 10 to 1 ## Footnote page 105, 106

Answer 25

1. 25 to 1 ## Footnote page 105, 106

Question 26

When slinging a bundle of pipe or tubing, which of the following would provide the best contact between sling and load? 1. double basket 2. bridle hitch 3. two double wrap chokers 4. single leg choker ## Footnote page 109

Answer 26

3. two double wrap chokers ## Footnote page 109

Question 27

Determine if this statement is true or false. Synthetic slings can be safely used under any environmental circumstances. 1. true 2. false ## Footnote page 110

Answer 27

2. false ## Footnote page 110

Question 28

Determine If this statement is true or false. Because all web slings are manufactured Identically, the ID tag does not Indicate the rated load. 1. true 2. false ## Footnote page 110, 111

Answer 28

2. false ## Footnote page 110, 111

Question 29

Referring to the standard format ofsling load charts, the angle between the top of the load and the sling leg is called the: 1. double angle 2. working angle 3. vertical angle 4. horlzontal angle ## Footnote page 115

Answer 29

4. horlzontal angle ## Footnote page115

Question 30

Using two slings to lift a load, at what angle to the horizontal is the load on each sling considered to be equal to the weight of the load? 1. 15 2. 30 3. 45 4. 60 ## Footnote page 115

Answer 30

2. 30 ## Footnote page 115

Question 31

Calculate using the recommended safe lifting angle, the distance between the lift points connecting the load using two 12 foot slings. 1. 6 feet 2. 8 feet 3. 10 feet 4. 12 feet ## Footnote page 116

Answer 31

4. 12 feet ## Footnote page 116

Question 32

Using the basic "Riggers Rule" (L/V x load/2) calculate the load in pounds on each sling leg, using two 12 foot slings with a vertical distance to hook point of 8 feet, and a load of 8,000 pounds. 1. 12,000 2. 8,000 3. 6,000 4. 4,000 ## Footnote page 118

Answer 32

3. 6,000 ## Footnote page 118

Question 33

Determine if this statement Is true or false. Safety regulations prohibit the use of clips to make hoisting sling eyes. 1. true 2. false ## Footnote page 121

Answer 33

2. false ## Footnote page 121

Question 34

Correctly installed U bolt type wire rope clips are installed with the U portion of the clip on the: 1. dead or short end 2. on the live or long end 3. installed either way 4. alternating up and down ## Footnote page 121

Answer 34

1. dead or short end ## Footnote page 121

Question 35

Correctly applied wire rope clips have an efficiency rating of approximately: 1. 50 percent 2. 80 percent 3. 20 percent 4. 100 percent

Answer 35

2. 80 percent ## Footnote page 121

Question 36

When compared to the rated size of the body of a shackle, the diameter of the pin is always: 1. same size 2. larger than body 3. smaller than body 4. depends on manufacturer ## Footnote Page 126

Answer 36

2. larger than body ## Footnote Page 126

Question 37

Shackles are only rated for their maximum capacity when used for what type of pull? 1. straight llne pull 2. 90 degree pull 3. 45 degree pull 4. designed tor any angle pull ## Footnote Page 126

Answer 37

1. straight llne pull ## Footnote Page 126

Question 38

With two shackles or sling eyes in a hook, what is the suggested maximum included lifting angle? 1. 0 degrees 2. 45 degrees 3. 90 degrees 4. 180 degrees ## Footnote Page 128

Answer 38

3. 90 degrees ## Footnote Page 128

Question 39

A wedge socket must be attached with the load line pulling in a straight line from the: 1. wedge 2. shank 3. point 4. pin ## Footnote page 129

Answer 39

4. pin ## Footnote page 129

Question 40

Determine if this statement is true or false. Referring to wedge sockets it is permitted to clip the wire rope dead end to the load line. 1. true 2. false ## Footnote page 130

Answer 40

2. false ## Footnote page 130

Question 41

Which type of eye-bolt should be used if there is any possibility of an angular load? 1. shoulder type 2. shoulderless type ## Footnote Page 131

Answer 41

1. shoulder type ## Footnote Page 131

Question 42

Custom fabricated lifting beams or any homemade lifting device must be: 1. designed by an engineer 2. have the rated capacity clearly stamped 3. be test lifted at 125% of rated capacity 4. all of the above ## Footnote page 134

Answer 42

4. all of the above ## Footnote page 134

Question 43

The main advantage of a side opening snatch block is: (pick the best answer) 1. change direction of load 2. change direction of wire rope 3. swivel hook 4. ease of Installing on wire rope ## Footnote page 138

Answer 43

4. ease of Installing on wire rope ## Footnote page 138

Question 44

With the load suspended, a single block hoisting assembly has a lead-line pull of 200 pounds. If the lines are parallel what is the load on the block? 1. 600 pounds 2. 400 pounds 3. 200 pounds 4. 100 pounds ## Footnote Page 139

Answer 44

2. 400 pounds ## Footnote Page 139

Question 45

What is the mechanical advantage ratio created on the top fixed sheave of a two block hoisting system? 1. none 2. 2 to 1 3. 4 to 1 4. depends on number of sheaves ## Footnote Page 141

Answer 45

1. none ## Footnote Page 141

Question 46

When determining the number of parts of line needed for rigging a system what unknown factor makes the use of a ratio chart a necessity? 1. block weight 2. friction 3. length of wire rope 4. diameter of drum ## Footnote Pages 142-144

Answer 46

2. friction ## Footnote Pages 142-144

Question 47

What Is one of the mam advantages of lactng a set of blocks? 1. they can be used in situations where headroom is tight because the blocks can come closer together 2. there are more reverse bends 3. the mechanical advantage is higher than square reeving 4. the blocks are 90° to each other ## Footnote Page 147, 148

Answer 47

1. they can be used in situations where headroom is tight because the blocks can come closer together ## Footnote Page 147, 148

Question 48

Determine if this statement is true or false. Load decking chain is the type used for chain hoisting slings. 1. true 2. false ## Footnote page 150

Answer 48

2. false ## Footnote page 150