Safety, Rigging

Question 1

class of fire wood and paper

Answer 1

class A

Question 2

class of fire flammable liquid

Answer 2

class B

Question 3

class of fire electrical equipment

Answer 3

class C

Question 4

class of fire combustible metals

Answer 4

class D

Question 5

class of fire combustible cooking media

Answer 5

class K

Question 6

fire extinguisher with larger tapered nozzle used for

Answer 6

carbon dioxide

Question 7

most versatile fire extinguisher

Answer 7

multi purpose dry chemical

Question 8

Duty rating of ladder
extra heavy duty
heavy duty
medium duty
light duty

Answer 8

Type 1A
Type 1
Type 2
Type 3

Question 9

scaffolds must be designed to support, how much the weight

Answer 9

4 times the load

Question 10

wire rope safety factor general rigging and hoisting

Answer 10

5:1

Question 11

wire rope safety factor lifting and transporting workers

Answer 11

10:1

Question 12

wire rope safety factor for public elevators

Answer 12

20:1

Question 13

SWL in tons

Answer 13

D²x8

Question 14

rule of thumb for sheave diameter to wire rope

Answer 14

20:1

Question 15

single vertical hitch is rated x times the sling material

Answer 15

1 time

Question 16

basket hitch is rated x times the sling material

Answer 16

2 times

Question 17

choker hitch is rated x times the sling material

Answer 17

3/4

Question 18

recommended sling angle when rigging a load

Answer 18

no less than 60 degrees

Question 19

1 ton=lbs

Answer 19

2000lbs

Question 20

1 tonne=lbs

Answer 20

2200lbs

Question 21

tension per sling

Answer 21

T=(W/N) x (L/V)
weight
number of legs
length of sling
vertical height from hook to load

Question 22

wire rope used for lifting

Answer 22

independent wire rope core

Question 23

wire rope used for standing ropes

Answer 23

wire strand core

Question 24

breaking strength formula fibre core

Answer 24

D²x42

Question 25

breaking strength formula wire core

Answer 25

D²x45

Question 26

wire rope lay with wire and strands twisted in same direction, not used for rotating equipment, has good abrasion resistance

Answer 26

lang lay

Question 27

wire rope lay with wire and strands twisted in opposite direction and used with rotating equipment

Answer 27

regular lay

Question 28

distance wire rope cannot be used from acetylne cut

Answer 28

6 inch

Question 29

Ladders should be place

Answer 29

75.5 degree or 4:1

Question 30

safety factor of non rotating wire rope

Answer 30

8:1

Question 31

replace wire rope when abrasion is

Answer 31

1/3

Question 32

SWL of singly ply nylon sling, single vertical hitch

Answer 32

1600

Question 33

Shackles are reduced to x when at 90 degree angle

Answer 33

50%

Question 34

chain should be replaced when worn by

Answer 34

10%

Question 35

safety factor for fibre rope

Answer 35

5:1

Question 36

grade if manila rope used for rigging

Answer 36

grade 1

Question 37

fibre rope that is non conductive and most popular

Answer 37

polypropylene

Question 38

fibre rope with greatest strength, elasticity and shock absorbtion

Answer 38

nylon

Question 39

fibre rope lay used for general purposes

Answer 39

medium lay

Question 40

highest tensile strength fibre rope has what “laid”

Answer 40

soft laid

Question 41

fibre rope strength reduction from knot or bend

Answer 41

50%

Question 42

fibre rope strength reduction from splice

Answer 42

15%

Question 43

ultimate strength with wire rope clips installed

Answer 43

80%

Question 44

number of clips for wire rope

Answer 44

rope diameter x 3 plus 1

Question 45

clip spacing for wire rope

Answer 45

rope diameter x 6

Question 46

turn back for wire rope

Answer 46

number of clips x spacing

Question 47

safety factor in chains

Answer 47

4:1

Question 48

strength of eyebolt at 45 degree

Answer 48

25%

Question 49

chain should be replaced when stretch reaches

Answer 49

5%