Chapter 33 Flashcards
A low slope roof is defined as a roof whose slope is less than:
a. 1:12
b. 1.5:12
c. 3:12
c. 3:12
Low slope roofs are more commonly used than steep roofs. True or false?
True
Because of the general trend toward sustainable and organic construction, organic felts are increasingly replacing fiberglass felts in built-up roofs. True or false?
False
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
b. is more porous than bitumen-treated organic felt
Which of the following represents an asphalt-treated fiberglass felt? a. TypeII B. Type III c. Type IV d. No. 15
C.
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
d
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
c.
Asphalt is a waste product obtained from?
Petroleum refining
The weight of aggregate surfacing on a built up roof is generally how many pounds per roof square?
400
Which of the following roofing asphalts is commonly used for interply mopping?
a. Type I
b. Type II
c. Type III
d. Type IV
c.
Which of the following built up roof members is more commonly used?
a. Asphalt built up roof membrane
b. Tar built up membrane
a.
Which of the following modified bitumen membranes is more elastomeric?
a. SBS- modified bitumen
b. APP- Modified bitumen
a.
Which of the following modified bitumen membranes is generally torch applied?
a. SBS- modified bitumen
b. APP- Modified bitumen
b.
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
b.
A dragon wagon is used in laying what?
A modified bitumen roof membrane
A EDPM is a thermosetting plastic. True or false?
True
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
d.
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
a
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
a
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
b.
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
a.
The cover board generally used between a single-ply roof and rigid insulation is?
Glass fiber reinforced gypsum board
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
a.
A loose laid ballasted roof is generally used with?
a. single ply membrane
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
b.
With a steel deck topped with lightweight insulation concrete, the commonly used board insulation is?
Expanded Polystyrene (EPS) board
A slotted steel roof deck is mandated for use with?
Lightweight insulating concrete
The flashing around a pipe penetrating through the roof is called?
a. base flashing
b. curbflashing
c. flange flashing
c.
The flashing around a roof drain is:
a. base flashing
b. curbflashing
c. flange flashing
c.
A cant strip is not required in a base flashing detail with single ply roof membrane . True or false?
True
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
d.
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
d.
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
b.
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
a.
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
c.
The head lap in a four ply built up roof is:
a. 2 inches
b. 4 inches
c. 5 inches
d. 6 inches
a. 2 inches
