Basic rigging

Question 1

What is the weight of a 36-foot American standard I-beam designated S15 x 42.9? Use the equation W= w/ft x L

153.3 LB.
540.0 Lb
1544.4 LB
2145.5 Lb

Answer 1

1544.4 LB

Question 2

If both ends of a sling are attached to the hoist hook and the load is suspended by the center of the sling, what hitch is being used?

Basket
Choker
Double Basket
Double choker 

Answer 2

Basket

Question 3

They hook should be removed from service If

The hook is discolored
The hook shows some scratches
The tip is bent or twisted
Wear has reduced the thickness by 2%

Answer 3

The tip is bent or twisted

Question 4

Determine the weight of a load consisting of 100 brass rods, 6ft long and 1.5inches in diameter (the weight per linear foot is 6.51Lb)

651 lb
3906 lb
5859 lb
7890 lb

Answer 4

3906lb

Question 5

The point at which a load will balance is called

Apex
Center of gravity
Point of suspension
Stability point

Answer 5

Center of gravity 

Question 6

If the strands of a wire rope appear to spiral down to the right, and if the wire strands appear to be parallel to the rope axis, the wire rope is

Left Lang Lay
Left regular lay
Right Lang Lay
Right regular lay

Answer 6

Right regular lay

Question 7

If a wire rope is classified as 6×37, the figure 37 means

Each strand of the rope contains a nominal 37 wires
The length of the rope is 37 rope lays
The rope is 37 feet long
There are a normal 37 strands in a rope

Answer 7

Each strand of the rope contains a nominal 37 wires

Question 8

Which of these wire rope and fittings are most efficient (assuming all are prepared correctly)?

Hand-tucked thimble slice
Speltered socket
Wedge socket
Wire-rope clips

Answer 8

Speltered socket

Question 9

As a general rule, what are the minimum and maximum temperatures to which a wire rope sling may be exposed, and still maintain its strength

-20/ +200•F (-29/93•C)
-40/+300•F (-40/149•C)
-60/+400•F (-51/204•C)
-80/+600•F ( -62/316•C)

Answer 9

-60/+400•F

Question 10

Which of the following is used to protect a rope loop from abrasion and sharp bends ?

Clip
Fist
Thimble
Wedge 

Answer 10

Thimble

Question 11

The process of joining two sections of rope by weaving the strands together is called

Seizing
Serving
Splicing
Swaging 

Answer 11

Splicing 

Question 12

Which of the following hedges cannot be made with a basic single leg sling

Basket
Bridle
Choker
Vertical 

Answer 12

Bridle

Question 13

The proof test value of a chain is at least _____ times the working load limit

Two
Three
Four
Five

Answer 13

Two

Question 14

The standard minimum design factor for metal mesh slings is

3
5
7
9

Answer 14

5

Question 15

A fiber rope. Sling should be removed from service if it.

Becomes wet
Has been frozen and thawed
Shows kinking
Shows oil discoloration

Answer 15

Shows kinking

Question 16

Nylon and polyester rope slings have a design factor of

5
7
9
11

Answer 16

9

Question 17

Before cutting a fiber rope, the ends should be________ to prevent fraying

Entwined
Spliced
Twisted
Whipped

Answer 17

Whipped 

Question 18

Synthetic webbing is spliced by

Cementing
Heat treating
Interweaving
Stitching

Answer 18

Stitching

Question 19

The purpose of an upper limit switch is to

Cut power if a load weighs more than
Keep the load block from rising dangerously high
raise the load block when the hoist is not in use
Stop lifts at a height convenient for a job

Answer 19

Keep the load block from rising dangerously high 

Question 20

When a rigger lifts a load, a few inches, then stops to see if the load drift downward, what is he checking?

Gearbox
Hoist breaks,
Lower limit switch
Overload 

Answer 20

Hoist breaks

Question 21

A pneumatic hoist is typically used instead of an electric one, when

An electric spark could be dangerous
Coast is a factor
Lifting speed is important
The load is greater than an electric motor can handle

Answer 21

An electric spark could be dangerous

Question 22

With a double reeved hoist

The load hook travels sideways as loads are raised
The rope unwinds from one side of the drum to the other
True vertical lift is possible
Two hoist drums are involved 

Answer 22

True vertical lift is possible

Question 23

A top running crane with a bridge beams supported on legs is called a________ crane

Cantilevered
Gantry
Girder
Jib

Answer 23

Gantry

Question 24

Hoist load chain, and sling chain

Are made of the same materials
Are subject to the same types of wear
Look similar
Receive the same heat treatment

Answer 24

Look similar 

Question 25

One edge of the load serves as a pivot during_______ turning Double sling One hook Single sling Two hook

Answer 25

One hook

Question 26

When should blocks or other holding devices be placed at the location where a load will be set? Before the load is lifted As soon as the load is lifted While the load is being moved While the load is suspended at the desired location

Answer 26

Before the load is lifted 

Question 27

A lift in excess of rated capacity Can be made repeatedly once approved Does not require analysis by a qualified person Is never permitted May be authorized for a single lift

Answer 27

May be authorized for a single lift 

Question 28

In general, you should not use a hoist or crane to pull a load, but it is permissible if you Attach a pulley block to the load Swing the boom of the crane to do the polling Use a manual chain, hoist in a horizontal set up Use rollers under the load

Answer 28

Use a manual chain, hoist in a horizontal set up 

Question 29

As a generic rule, you should set a load on A concrete floor for stability Any surface as long as it doesn’t damage the load The sling that holds it, then tug it sharply away Wooden blocks to allow easy sling withdrawal

Answer 29

Wooden blocks to allow easy sling withdrawal 

Question 30

Two hook turning of a suspended load Is accomplished with a single hoist Is the easiest turning method to use? Requires a minimum amount of planning Should be used only when absolutely necessary

Answer 30

Should be used only when absolutely necessary 

Question 31

Selection of the proper sling material for a job is determined primarily by Environmental conditions Hitch arrangement Method of attachment to the load The shape of the load

Answer 31

Environmental conditions

Question 32

When you secure a scaffold with Guy wires, what accessories do you use to tighten the wires to the correct tension? Cable clamps Thimbles Tumbuckles Wire rope clips

Answer 32

Tumbuckles

Question 33

Unless otherwise specified, the maximum load that can safely be supported on a sectional metal scaffold is_______lb/ft2 pf work area 10 25 40 50

Answer 33

25

Question 34

When using a screw jack to level a double pole scaffold, make sure The jacks base can support the weight without sinking The weight of the scaffold remains centered over the jack after leveling To replace the jack with round Timbers after leveling To work in the center of the scaffold, to avoid toppling the jack

Answer 34

The Jack’s base can support the weight without sinking 

Question 35

When is ascending a ladder, make sure to Keep your back to the ladder Leave one hand free to carry tools Step carefully off the top rung Use a rope to raise needed materials

Answer 35

Use a rope to raise needed materials