Rigging And Hoisting

Question 1

Of a block and tackle with 5 rope falls and minimum friction, how much force is needed to retain 250lbs?

Answer 1

50 lbs (250 ÷ 5)

Question 2

What diameter rope is needed to support 2 tons using a vertical lift?

Answer 2

1/2”

Question 3

What is the standard safety factor to consider for platform supporting people?

Answer 3

10:1

Question 4

If a wire rope has a breaking strength of 15000 lbs, determine the safe working load under normal lifting conditions.

Answer 4

3000 lbs

Question 5

Hi 👋

Answer 5

Good job, Keep it up !

Question 6

What type of lifting technique has the least lifting capacity ( if all use the same rope) ?

Answer 6

Choker sling

Question 7

What type of sling presentation will accept 200% of the SWL? ( Safe working limit)

Answer 7

Basket

Question 8

The signal for stop in rigging is what?

Answer 8

Flat of hand waved across chest

Question 9

The construction of a wire rope is determined by the direction of the twist of strands. This is known as what?

Answer 9

Lay

Question 10

What type (number) of flexible wire rope for overhead Crane use?

Answer 10

6-37

Question 11

A type of knot used to tie 2 lines of the same size together so they will not slip is called?

Answer 11

Reef

Question 12

What sling setup can achieve good gripping action?

Answer 12

Choker

Question 13

When using a swivel eyebolt for rigging, what must you do?

Answer 13

Make sure it is torqued correctly

Question 14

A signal person has their arm at 90°, and thumbs pointing inwards. What is this signal?

Answer 14

Retract boom

Question 15

You are using an electromagnet magnet drill to drill a hole in an I-beam. What is the 1st safety precaution to take?

Answer 15

Rig the drill to the beam

Question 16

What stops the Crane block at the top?

Answer 16

Upper limit switch

Question 17

What are double clip hooks used for?

Answer 17

Use for human safety harnesses

Question 18

What is the distance between slings if you are using a 2 part bridle with 2 slings at 60ﾟ, and each sling is 46” long?

Answer 18

46”

Question 19

What type of rope is not to be used in high heat environments?

Answer 19

Manila

Question 20

What is the calculation for the SWL (safe working load) of a 4 part bridal?

Answer 20

SWL X H/L X 3

Question 21

What do you use to lift an acetylene container?

Answer 21

Suitable cradle

Question 22

What is the lift capacity of a 6000 lbs breaking strength rope when used on a platform supporting people?

Answer 22

600 lbs (6000÷10)

Question 23

What prevents the lower and upper chain blocks from touching?

Answer 23

Limit switch

Question 24

What is a turnbuckle used for?

Answer 24

Leveling the load( adjusting tension)

Question 25

If you are 60" away from a Crane, looking up at a 45ﾟ angle to the boom, what is the boom height if it is in the vertical position?

Answer 25

60"

Question 26

How is the mechanical advantage gained in a rope fall?(pulleys)

Answer 26

By the # of rope falls

Question 27

What is a tag line used for?

Answer 27

To prevent the swinging of the load

Question 28

What term is given to the opening of a hook?

Answer 28

Throat

Question 29

What is a continuous piece of rope called?

Answer 29

Endless sling

Question 30

High stranding of one layer of wire rope is called what?

Answer 30

Bird caging

Question 31

What type of rope is used for heavy lifting?

Answer 31

6-7

Question 32

What happens to a rope when it is unwound incorrectly?

Answer 32

Kinking

Question 33

How are cable clips installed?

Answer 33

Saddles are on the live side only

Question 34

What is the safe working limit of a 3/8" diameter rope in a 2 part bridal configuration at 60ﾟ lifting angle?

Answer 34

4000 lbs

Question 35

The signal of the finger rotated in the palm of the hand means what?

Answer 35

Everything slow

Question 36

When are wire ropes replaced?

Answer 36

When 3 or more broken wires are found a one strand of 1 lay

Question 37

Using the average weight of 500 lbs per cubic foot for steel, calculate the approximate weight of a plate you want to lift that is 6" long, 5' 8" wide, and 1 1/4 " thick.

Answer 37

1700 lbs

Question 38

A hand signal where thumb is pointing upwards and fingers on same hand are flexing means what?

Answer 38

Boom up load down

Question 39

What is the type of rope for good flexibility?

Answer 39

6-37

Question 40

What is the correct way to store a sling?

Answer 40

Hanging vertically

Question 41

What is used on a shackle pin when lifting a rotating load?

Answer 41

Safety pin

Question 42

What is used with a Crane to move a load horizontally?

Answer 42

Snatch block

Question 43

What type of lift is used for a bundle of pipes?

Answer 43

Double wrap choker