E2

Question 1

Natural fibres include

Answer 1

Manila and Sisal

Question 2

Synthetic fibers include

Answer 2

Nylon, polypropylene, and polyester

Question 3

braided ropes are generally made from what?

Answer 3

synthetic materials

Question 4

Manila rope is only 37% as strong as?

Answer 4

nylon

Question 5

Nylon is approx. ____ times stronger than manila

Answer 5

2 1/2 times

Question 6

Nylon will stretch up too ___% its length

Answer 6

40

Question 7

Nylon looses ___% of its strength when wet and can withstand up too ___ degrees

Answer 7

10 and 150 degrees C

Question 8

polyester rope will only stretch

Answer 8

5% before breaking

Question 9

polyester is only ___ % as strong as nylon

Answer 9

87%

Question 10

Polypropylene rope is

Answer 10

light weight and can float on water

Question 11

Polypropylene can melt over higher temp then ___and looses ___% of its strength

Answer 11

100 degrees C and 40%

Question 12

Polypropylene has the best what?

Answer 12

electric shock resistance

Question 13

What id the Working Load Limit

Answer 13

the maximum load that rigging component may carry and meet the safety factors

Question 14

minimum safety factor for rigging used to support workers is

Answer 14

10

Question 15

rope strength is measured in?

Answer 15

Newtons or pounds

Question 16

tying a knot in a rope reduces it strength by?

Answer 16

50%

Question 17

for lifting materials the max load should never exceed ___ of the ropes breaking strength

Answer 17

1/9

Question 18

what is a thimble used for?

Answer 18

protecting the eye of the rope

Question 19

what is whipping?

Answer 19

it prevents the strands from slipping in relation to the other

Question 20

how do you store ropes?

Answer 20

hung in well ventilated areas