Scaffolding/Random

Question 1

Solder content 60-40

Answer 1

60 tin 40 lead

Question 2

How are soldering coppers sized?

Answer 2

Weight per pair. 4lb coppers give two Coppers of 2lb

Question 3

Find straight section of reducing elbow

Answer 3

Big end minus small end

Question 4

What is Carbonic acid

Answer 4

When CO2 dissolves in water vapour, causing corrosion

Question 5

Max temp of b vent

Answer 5

480F

Question 6

b Vent can only be used for what gas types

Answer 6

Propane or NG. Not suitable for coal, wood or oil

Question 7

B vent is made of ?

Answer 7

Aluminum interior, galvalume exterior

Question 8

What is L Vent?
Rated for what type of fuel ?
Max temp?
Made out of ?

Answer 8

Similar to B vent
max temp 570F
Approved for Oil burning
Inner wall stainless/aluminum

Question 9

Minimum platform width of a scaffold

Answer 9

20inches or two planks

Question 10

Lowest grade of Manila rope for overhead lifting

Answer 10

Number 1

Question 11

How strong is nylon rope compared to Manila rope?

Answer 11

2.5x stronger

Question 12

WLL stands for?

Answer 12

Working Load Limits - minimum for supporting workers is a factor of 10

Question 13

How much strength is lessened in a rope with a knot?

Answer 13

50%

Question 14

What amount of rope strength can be used for lifting or pulling ?

Answer 14

1/9 over head
1/5 for pulling

Question 15

A Threaded sleeve that is driven in and bolt thread to it ?

Answer 15

Drop in anchor

Question 16

Light duty anchor?

Answer 16

Nail in (pin bolt)

Question 17

Force that pulls straight down

Answer 17

Tensile

Question 18

Force at 90 degrees to Fastner

Answer 18

Sheer

Question 19

Anchor placed in form BEFORE concrete is poured

Answer 19

Hanger insert

Question 20

Manufacturers rated load capacity should be divided by a factor of ___ to determine the safe working capacity of an anchor

Answer 20

4x

Question 21

How many BTU to raise 55 cu. Ft. Of air 1degree F?

Answer 21

1 BTU

Question 22

ABC requirements about fuel fired appliances installed on the roof or outside building?

Answer 22

1.2M from property line measure horizontally

Question 23

Define term outlet throw

Answer 23

Displayed in feet
Distance air travels from centre of diffuser outward to where air velocity drops to 50 FPM

Question 24

Scaffold design rating

Answer 24

4x the load it will be used on

Question 25

How long can a scaffold not be used before it needs to be re tagged and inspected ?

Answer 25

21 days
Scaffold tags also expire after 21 days

Question 26

Scaffold tags include what info?

Answer 26

Duty rating, date inspected, who inspected, notes, expiry

Question 27

You may not use a scaffold if it has a?

Answer 27

Red tag, no tag, yellow or green expired tag

Question 28

Employer must ensure that a solid sawn lumber scaffold plank is?

Answer 28

Scaffold grade wood or better, sized 51x254mm (2”x10”)

Question 29

How far must a wooden scaffold plank extend past edge?

Answer 29

No less than 6” or more than 12” (150-300mm)

Question 30

The height of a rolling scaffold shall be no more than __x the smallest dimension

Answer 30

3x

Question 31

A worker must not remain on a rolling scaffold while it’s being moved unless?

Answer 31

The height of the work platform is not more than twice it’s smallest base dimension

Question 32

Mobile scaffold height requiring guardrails

Answer 32

10’

Question 33

Pulley adjustment to change CFM

Answer 33

Change motor pulley (driver)

Question 34

Opening an adjustable pulley

Answer 34

Goes slower or gets smaller

Question 35

Closing adjustable pulley

Answer 35

Goes faster or gets bigger

Question 36

To slow down the fan what would we need to do to a pulley?(adjustable)

Answer 36

Use smaller motor pulley

Question 37

If you close the motor pulley (decrease belt tension) what happens to the fan ?

Answer 37

Speed up

Question 38

Eavestrough slope?

Answer 38

1” per 16’