2-6-3 Practical Applications -- Rigging-- Vectors

Question 1

The woriking load limit (wll) of any individual rigging component shall not be exceeded in any situation.

Answer 1

True

Question 2

The three sags associated with a line conductor are stringing, maximum, and __?__.

Answer 2

Final

Question 3

Moving a conductor into a conrner causes __?__.

Answer 3

Sag and tension to increase

Question 4

The formula used to calculate the vertical weight on a structure is __?__.

Answer 4

TxH/L

Question 5

When pulling in a conductor, line tension __?__ when one-half of the sag is removed.

Answer 5

Doubles

Question 6

Line tension is normally less than __?__ for an aluminum conductor smallet than 3/0.

Answer 6

500 lbs

Question 7

Slings used on a 1000-pound transformer at a 60° angle will see __?__ each.

Answer 7

577 lbs

Question 8

When lifting a conductor, its weight doubles when the lowest point of sag reaches an adjacent structure.

Answer 8

True

Question 9

The WLL (working load limit) is based on the actual breaking strength of the equipment and does not include a safety factor.

Answer 9

False

Question 10

Chains that are safe to use as slings when doing line work will have each link marked with the letter __?__.

Answer 10

A

Question 11

A knot may reduce the WLL of a rope by as much as __?__.

Answer 11

45-55%

Question 12

A hand line may be used to hang a transformer that weighs 200 pounds or less.

Answer 12

False

Question 13

Two things that must be known prior to rigging for a lift are the load weight and the __?__.

Answer 13

angle involved

Question 14

When using a fiber rope, the shell of a block should be __?__ times the diameter of the rope.

Answer 14

8

Question 15

When using blocks, the load on a pole gin is equal to the weight of the load plus the __?__.

Answer 15

pull on the fall line

Question 16

An angle of 135° exerts less of a load on a block hook than an angle of 45°

Answer 16

True

Question 17

A block that can be placed at any point in a line without having to feed the end of the line through it is called a __?__ block.

Answer 17

snatch

Question 18

Eye splices should have a(n) __?__ to maintain rope strength and reduce wear.

Answer 18

thimble

Question 19

A __?__ is often called the king of knots for line work.

Answer 19

bowline

Question 20

When using a capstan hoist to lift a load, the number of turns should be so that about 20 to __?__ of pull are on the fall line.

Answer 20

40 lbs

Question 21

A rope used for a hand line should have a safety factor of at least __?__.

Answer 21

10 to 1

Question 22

A web hoist, often called a hot hoist, is considered to be an insulated hoist.

Answer 22

False

Question 23

When installing U-bolt wire rope clips, the saddle goes on the __?__.

Answer 23

live side

Question 24

Polypropylene rope is rated poor in its resistance to __?__.

Answer 24

sunlight