Cables And Configurations

Question 1

Answer 1

1:1 single wrap

Question 2

Answer 2

1:1 double wrap

Question 3

Answer 3

2:1 double wrap

Question 4

Answer 4

2:1 single wrap

Question 5

Answer 5

2:1 single wrap underslung

Question 6

What are the names of the sheaves in a 1:1 double wrap rope configuration

Answer 6

-traction sheave
-secondary sheave

Question 7

What are the names of the sheaves in a 1:1 single wrap rope configuration

Answer 7

-traction sheave
-deflector sheave

Question 8

Names of the sheaves in a 2:1 roping double wrap rope configuration

Answer 8

-traction sheave
-secondary sheave
-compounding sheaves

Question 9

Names of the sheaves in a 2:1 single wrap rope configuration

Answer 9

-traction sheave
-compounding sheaves
-may also have deflector sheaves

Question 10

Cable replacement criteria

Answer 10

-crown / valley breaks
-diameter reduction
-red dust/rouge

Question 11

Typical sizes of traction cables

Answer 11

-3/8
-1/2
-5/8

Question 12

What is a wedge shackle

Answer 12

It attaches the cables to the hitch plates of the car and counterweight

Question 13

Minimum number of cables for an elevator is …

Answer 13

Three

Question 14

What are elevator ropes

Answer 14

Steel cables typically with a hemp core that are used to raise and lower the elevator

Question 15

What is the purpose of the springs on a wedge shackle

Answer 15

Tension equalization