Roofing 110201a

Question 1

How many sloping sides do these roofs have?

Cottage (hip) Roof
Gable Roof
Gambrel Roof
Mansard Roof

Answer 1

Cottage (hip) Roof - 4
Gable Roof - 2
Gambrel Roof - 4
Mansard Roof - 8

Question 2

How would you recognize a Butterfly roof?

Answer 2

It’s an inverted Gable Roof

Question 3

Why is a dome roof so special in it construction?

Answer 3

It doesn’t need a central supporting structure

Question 4

What is meant by these terms:

Span
Slope
Rise
Run

Answer 4

Span - The distance from one outer edge to the other

Slope - A ratio expressed as rise over run

Rise - The vertical measurement from the peak

Run - The horizontal measurement. Equals half of the Span

Question 5

What is meant by 1:3 slope?

Answer 5

A rise of 1 to a run of 3

Question 6

What is steeper 12” on 12” or 16” on 12”?

Answer 6

16 on 12

Question 7

What is the noblest metal used in roofing?

Answer 7

Copper number 8

Question 8

What are the most common metals used for roofing today?

Answer 8

Aluminum, Copper, Galvanized Iron

Question 9

What is meant by BUR?

Answer 9

Built-up Roofing

Question 10

What is the top coat of a BUR called?

Answer 10

The flood coat (asphalt or tar)

Question 11

On a lap seam the hole is larger for the fastening device. Why?

Answer 11

For expansion and contraction

Question 12

What are the different Batten seams and how do they work?

Answer 12

Under braking the metal on alternate batten

Question 13

What is the Sheet Metal workers responsibility

Answer 13

Coping and counter flashing

Question 14

Where is step flashing used and what size should they be?

Answer 14

Where a roof meets a wall 3”x3”x6”

Question 15

Where is counter flashing used?

Answer 15

Over the base or step flashing

Question 16

Why are cricket or saddles used?

Answer 16

To prevent water from pooling

Question 17

Where are raggle or (Reglet) used and how?

Answer 17

A slot in a masonry wall used to hold a flashing in place

Question 18

What is the purpose of a gravel stop?

Answer 18

Prevent gravel and tar going over the edge

Question 19

What are Hip and Ridge flashing used for?

Answer 19

To cap the peak of a roof

Question 20

What is a scupper and where is it located?

Answer 20

A hole through a parapet wall used to drain water

Question 21

What is a leader head?

Answer 21

A conductor head used to collect water under the scupper

Question 22

What size should pitch pans or (Gum Box) be?

Answer 22

4” x 4”

Question 23

What is the purpose of a through wall flashing?

Answer 23

Prevents moisture from entering the building

Question 24

Curbs vertical height must be no less than what height?

Answer 24

9” or 225mm

Question 25

All holes cut in steel Decks must reinforced after what sizes?

Answer 25

8”

Question 26

Steep Roof construction is generally specified when the roof area is relatively small and has a slope that exceeds what?

Answer 26

1:4

Question 27

Flat roof decks are __________________ to allow for _______________.

Answer 27

sloped drainage

Question 28

Short walls built around the perimeter of a building are called?

Answer 28

parapet walls

Question 29

A _____________ roof has 2 sloping sides

Answer 29

gable

Question 30

A hip roof has __________________ sloping sides.

Answer 30

4

Question 31

______________ is the distance from one outer edge of a roof to the opposite outer edge.

Answer 31

Span

Question 32

The roof triangle consists of ______________, ______________ and ___________.

Answer 32

Slope rise run

Question 33

Rise is the _____________ measurement when expressing slope on a roof.

Answer 33

vertical

Question 34

______________ is the horizontal measurement when expressing slope on a roof

Answer 34

Run

Question 35

3 most common materials used for roofing are:

Answer 35

Aluminium Cooper Galvanized

Question 36

Corrugated panels used for either roofing or siding must be laid ____________.

Answer 36

opposite the direction of the prevailing wind

Question 37

A process that degrades metal electrochemically __

Answer 37

galvanic corrosion

Question 38

A type of roof that does not require a central supporting structure ______

Answer 38

dome

Question 39

Metals are classified by their nobility, which metal is more noble – Steel or Copper

Answer 39

Cooper

Question 40

BUR stands for?

Answer 40

built up roofing

Question 41

All building material will _________ and _____ as the temperature changes.

Answer 41

expand contract

Question 42

What type of seam is preferred as is makes allowances for expansion with the wood being tapered?

Answer 42

batten

Question 43

Valley flashing can be installed as ________, ______ or _______ valley

Answer 43

open closed woven

Question 44

What is required when a roof surface meets a wall or chimney ___________

Answer 44

flashing

Question 45

________________ flashing is required to cover the top edge of base or step flashing.

Answer 45

Counter

Question 46

When a chimney is 30” or wider, a _________ is provided at the top side or back.

Answer 46

cricket/saddle

Question 47

What type of flashing is provided on the top surface of a wall and comes with a drip edge?

Answer 47

coping

Question 48

To prevent tar and gravel from going over the edge of a roof, ________ flashing is used.

Answer 48

gravel stop

Question 49

A ____________ is a hole through the parapet wall to allow water to drain off the roof.

Answer 49

scupper

Question 50

If a 2” gas line penetrates the roof, what is the minimum size pitch pan that can be used _______________. What if there were 2-2” gas lines _______________________.

Answer 50

6 x 6 10 x 6

Question 51

Sides on a gum box must be a minimum of __________ high.

Answer 51

4”

Question 52

Galvanic corrosion can be reduced by insulating the two metals from each other, give 3 examples of material that can be used as insulation

Answer 52

- heavy tinning of ferrous metals - quality moisture proof building paper - felt and heavy coat of asphalt paint.

Question 53

What happens to aluminum when it comes in contact with concrete ______.

Answer 53

deteriorates

Question 54

If the span of a roof is 30’, what is the run _____________________.

Answer 54

15’ (half of the span)

Question 55

What metal will expand the most as the temperature changes ____________________

Answer 55

zinc

Question 56

What type of flashing is used to cap the peak of a roof?

Answer 56

ridge and hip flashing