Rigging

Question 1

The giant stone slabs of Stonehenge, weighing 40 to 50 tons each, were brought to an upright position using a series of _____and fulcrums.

Answer 1

Levers

Question 2

In the late 1800s, ironworkers used massive low-slung flatbed carts with___and mules or horses to move machinery from shop to job site

Answer 2

Wheels

Question 3

The device that converts motion to torque is the____

Answer 3

Wheel

Question 4

Manila rope is usually made up with___strands

Answer 4

Three

Question 5

The reversal of twist in the strands gives Manila rope a balance and eliminates the tendency towards______

Answer 5

Unwinding

Question 6

Which lay of rope is generally recommended?

Answer 6

Medium-layed

Question 7

____is the best known and have gained the widest acceptance of synthetic fiber ropes.

Answer 7

Nylon

Question 8

Which of the following types of rope is the strongest?

Answer 8

Nylon

Question 9

Breaking load, weight and breaking length, load/extension characteristics, and recovery after repeated loadings contribute to a ropes ability to____

Answer 9

Absorb energy

Question 10

Of all the hazards to which ropes are subjected, perhaps the worst is the effect of____because the damage done may not be apparent on normal examination

Answer 10

Heat

Question 11

When using synthetic ropes, you must take extra caution because synthetics_____more than manila

Answer 11

Stretch

Question 12

Which is slightly weaker than the short splice but is able to run through a sheave?

Answer 12

Long splice

Question 13

Blocks, when reeves, become a_____, which by definition is a device by which forces may be advantageously applied to do work

Answer 13

Machine

Question 14

Blocks, when reeves, work like a machine and are not 100% efficient because of____

Answer 14

Friction

Question 15

Which of the following is a sign that the blocks are being overloaded?

Answer 15

Hook shows signs of opening

Question 16

The length of wire rope is ordered or recorded in____

Answer 16

Feet

Question 17

Which of the following grades of wire should an ironworker select if he or she desires maximum rope strength?

Answer 17

Grade 120/130 special improved plow type II

Question 18

The wires and strands in performed rope are___in the manufacturing process to fit their position in the finished rope

Answer 18

Shaped

Question 19

Fatigue is caused by the constant ___of the rope over sheaves and around drums.

Answer 19

Bending

Question 20

Where abrasive conditions are severe, which of the following kinds of lay should be used in the rope?

Answer 20

Lang lay

Question 21

To locate the rope anchorage point on the machine drum in relation to the direction of lay of the rope, use your right hand as a_____to simulate the drum for the right lay ropes.

Answer 21

Fist

Question 22

The main object in external lubrication is to____.

Answer 22

Fill the gaps between the strands and rope

Question 23

Where should lubricant be applied for maximum penetration of a rope?

Answer 23

Where it opens up on a bend

Question 24

To be certain that the ropes spools evenly on the drum, keep tension of approximately ___% of the working load of the rope at all times.

Answer 24

10

Question 25

Which of the following will best prevent a rope from jumping off of the sheave?

Answer 25

Cable-keepers

Question 26

If there is evidence of opening or distortion of the hook, you should___.

Answer 26

Destroy the hook

Question 27

Generally speaking, the larger the___ of a hook, the more load it can hold.

Answer 27

Throat opening

Question 28

Rings, links, and swivels must be made from_____.

Answer 28

Forged alloy steel

Question 29

Shackles worn in the crown or the pin area by more than____% of the original diameter should be destroyed

Answer 29

10

Question 30

It is recommended that all eye bolts and rings bolts used for hoisting be equipped with ____ or_____

Answer 30

Shoulder, collars

Question 31

All turnbuckles used in hoisting or rigging operations should be of ____.

Answer 31

Weldless construction

Question 32

Hydraulic jacks are very popular in construction because they are ____.

Answer 32

Compact

Question 33

If the load can not be raised with the handle supplied, the jack is _____.

Answer 33

Overloaded

Question 34

What is the most important aspect in rolling?

Answer 34

Control of the load

Question 35

A come-along that requires the use of a______to move a load is inadequate for the job.

Answer 35

Cheater

Question 36

Tirfors can be fitted with____to operate the levers

Answer 36

Hydraulic rams

Question 37

Where are base-mounted winches particularly useful?

Answer 37

Where there is not enough headroom for cranes to operate

Question 38

What will protect the member and the sling from damage and increase the radius of bending in the sling?

Answer 38

Softeners

Question 39

The forklift truck is equipped with a____fork secured to the supporting frame.

Answer 39

Two-toned

Question 40

Forklifts range in load-carrying capacity for 2000 to______pounds.

Answer 40

80000

Question 41

Which type of pallet is appropriate to be moved with a high-lift pallet truck?

Answer 41

Single-faced

Question 42

Whenever the temperature is below____, you must exercise extreme caution.

Answer 42

32 degrees Fahrenheit

Question 43

Rapid____of suspended loads also subjects the equipment to additional stresses, which can cause collapse.

Answer 43

Swinging

Question 44

The safe working loads of all hoisting equipment apply to_____.

Answer 44

Freely suspended loads on plumb hoist lines only

Question 45

Three and four-legged bridle slings are given the same_____load as a two-legged sling.

Answer 45

Safe

Question 46

What is the formula for determining the distance around the edge of a circle?

Answer 46

Diameter x3.14

Question 47

For an odd-shaped object, the rigger must often use a ___and___method to determine the center of gravity

Answer 47

Trial and error