Chapter 33

Question 1

A low slope roof is defined as a roof whose slope is less than:

a. 1:12
b. 1.5:12
c. 3:12

Answer 1

c. 3:12

Question 2

Low slope roofs are more commonly used than steep roofs. True or false?

Answer 2

True

Question 3

Because of the general trend toward sustainable and organic construction, organic felts are increasingly replacing fiberglass felts in built-up roofs. True or false?

Answer 3

False

Question 4

Bitumen-treated fiberglass felt:

a. is less porous than bitumen-treated organic felt
b. is more porous than bitumen-treated organic felt
c. has the same porosity as bitumen-treated organic felt
d. none of the above

Answer 4

b. is more porous than bitumen-treated organic felt

Question 5

Which of the following represents an asphalt-treated fiberglass felt?
a. TypeII
B. Type III
c. Type IV
d. No. 15

Answer 5

C.

Question 6

A built up roof membrane is generally finished with;

a. a single ply roof membrane
b. aggregate surfacing
c. a flood coat of bitumen
d. b and c
e. none of the above

Answer 6

d

Question 7

A roof square implies:

a. 1 ft squared of roof area
b. 10 ft squared of roof area
c. 100 feet squared of roof area
d. none of the above

Answer 7

c.

Question 8

Asphalt is a waste product obtained from?

Answer 8

Petroleum refining

Question 9

The weight of aggregate surfacing on a built up roof is generally how many pounds per roof square?

Answer 9

400

Question 10

Which of the following roofing asphalts is commonly used for interply mopping?

a. Type I
b. Type II
c. Type III
d. Type IV

Answer 10

c.

Question 11

Which of the following built up roof members is more commonly used?

a. Asphalt built up roof membrane
b. Tar built up membrane

Answer 11

a.

Question 12

Which of the following modified bitumen membranes is more elastomeric?

a. SBS- modified bitumen
b. APP- Modified bitumen

Answer 12

a.

Question 13

Which of the following modified bitumen membranes is generally torch applied?

a. SBS- modified bitumen
b. APP- Modified bitumen

Answer 13

b.

Question 14

Which of the following roofing asphalts is commonly used for mopping an SBS modified bitumen membrane?

a. Type I
b. Type IV
c. TypeIII
d. None of the above

Answer 14

b.

Question 15

A dragon wagon is used in laying what?

Answer 15

A modified bitumen roof membrane

Question 16

A EDPM is a thermosetting plastic. True or false?

Answer 16

True

Question 17

The lap seams in an edpm roof membrane are typically sealed by:

a. heat welding
b. liquid adhesives
c. single-sided tape
d. double sided-tape

Answer 17

d.

Question 18

The lap seams in a PVC roof membrane are typically sealed by:

a. heat welding
b. liquid adhesives
c. single-sided tape
d. double sided-tape

Answer 18

a

Question 19

The lap seams in a TPO roof membrane are typically sealed by:

a. heat welding
b. liquid adhesives
c. single-sided tape
d. double sided-tape

Answer 19

a

Question 20

Of the two single-ply roof membranes, EDPM and PVC, PVC is generally:

a. More flexible and more fire resistant
b. less flexible but more fire resistant
c. more flexible but less fire resistant

Answer 20

b.

Question 21

Perlite board (as a cover board), sandwiched between the insulation and the roof membrane, is generally used with;

a. an asphalt-mopped membrane
b. a fully adhered single-ply membrane
c. mechanically fastened single ply membrane
d. none of the above

Answer 21

a.

Question 22

The cover board generally used between a single-ply roof and rigid insulation is?

Answer 22

Glass fiber reinforced gypsum board

Question 23

A mechanically fastened single-ply roof membrane is generally used with:
a, steel roof decks
b. reinforced concrete deck
c. precast concrete decks
d. none

Answer 23

a.

Question 24

A loose laid ballasted roof is generally used with?

Answer 24

a. single ply membrane

Question 25

For a building located in a high wind region, which of the following roof systems is most suitable?

a. loose-laid ballasted single ply system
b. fully adhered single ply system
c. Mechanically fastened single ply system
d. Gravel covered built up roof

Answer 25

b.

Question 26

With a steel deck topped with lightweight insulation concrete, the commonly used board insulation is?

Answer 26

Expanded Polystyrene (EPS) board

Question 27

A slotted steel roof deck is mandated for use with?

Answer 27

Lightweight insulating concrete

Question 28

The flashing around a pipe penetrating through the roof is called?

a. base flashing
b. curbflashing
c. flange flashing

Answer 28

c.

Question 29

The flashing around a roof drain is:

a. base flashing
b. curbflashing
c. flange flashing

Answer 29

c.

Question 30

A cant strip is not required in a base flashing detail with single ply roof membrane . True or false?

Answer 30

True

Question 31

Counter flashing is generally:

a. made of pvc and is permanently anchored to the deck or parapet wall.
b. made of pvc and is a removable item
c. made of sheet metal and is permanently anchored to the deck or parapet wall
d. made of sheet metal and is a removable item
e. none

Answer 31

d.

Question 32

In a protected membrane roof, the insulation is:

a. below the deck
b. between the deck and the membrane
c. above the membrane and fully adhered to it
d. above the membrane but loos laid over it
e. none

Answer 32

d.

Question 33

FM 1-120 represents:

a. The fire rating of a roof assembly
b. the wind uplift resistance of a roof assembly
c. the hail impact of a roof assembly
d. none

Answer 33

b.

Question 34

UL Class B represents:

a. The fire rating of a roof assembly
b. the wind uplift resistance of a roof assembly
c. the hail impact of a roof assembly
d. none

Answer 34

a.

Question 35

FM MH represents:

a. The fire rating of a roof assembly
b. the wind uplift resistance of a roof assembly
c. the hail impact of a roof assembly
d. none

Answer 35

c.

Question 36

The head lap in a four ply built up roof is:

a. 2 inches
b. 4 inches
c. 5 inches
d. 6 inches

Answer 36

a. 2 inches