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AECT110 > Chapter 30 > Flashcards

Chapter 30 Flashcards

1
Q

The microscopic (atomic) structure of glass resembles that of:

a. solids
b. liquids.
c. none of the above

A

b. liquids

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2
Q

To make glass transparent, the molten glass ingredients must be :

a. cooled very slowly
b. cooled slowly during manufacture
c. any of the above
d. cooled rapidly during manufacture

A

d. cooled rapidly during manufacture

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3
Q

The glass obtained from the float-glass process without any further treatment is called:

a. sheet glass
b. annealed glass
c. plate glass

A

b. annealed glass

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4
Q

If glass is 1/8in. (3mm) thick, it is also called:

a. sheet glass
b. single strength glass
c. double strength glass

A

Double strength glass

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5
Q

Which of the following types of glass is generally used as safety glass?

a. sheet glass
b. tempered glass
c. heat-strength glass

A

b. tempered glass

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6
Q

Which glass type is commonly specified for the spandrel areas of an all-glass curtain wall?

a. sheet glass
b. tempered glass
c. heat-strengthened glass
d. plate glass

A

c. heat-strengthened glass

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7
Q

Which of the following glass types has locked-in stresses?

a. tempered glass
b. heat-soaked tempered glass
c. heat-strengthened glass
d. all of the above
e. none of the above

A

d. all of the above

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8
Q

To obtain heat-soaked tempered glass, the glass must be tempered first and then:

a. annealed
b. etched
c. heat strengthened in a furnace
d. subjected to cyclic heating and cooling

A

d. subjected to cyclic heating and cooling

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9
Q

Which of the following glass types, when broken, breaks into tiny square edged granules?

a. tempered glass
b. heat-strengthened glass
c. annealed glass

A

a. tempered glass

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10
Q

Spontaneous breakage generally occurs in:

a. annealed glass
b. heat strengthened glass
c. heat-soaked tempered glass
d. tempered glass

A

d. tempered glass

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11
Q

Tinted glass absorbs more solar radiation than clear glass. true or false?

A

True

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12
Q

If the reflective coating of tinted glass is on the interior surface of the glass, the solar radiation absorbed by the glass is greater than if the same coating is on the outside surface. True or false?

A

True

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13
Q

When solar radiation falls on a glass, a certain amount of solar energy enters the enclosure through the glass. A commonly used measure of solar heat gain through the glass is called:

a. VT
b. SHGC
c. UVT
d. CRF

A

b. SHGC

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14
Q

Before a reflective coating is applied on a glass, the glass must first be cut to size. True or false?

A

False

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15
Q 
Which of the following indices measures the effectiveness of the transparency of glass in relation to the solar heat gain through glass?
a. UVT
b. SC
C. CRF
d. LSG
A

LSG

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16
Q

A reflective coating increases the R-value of glass only marginally. True or false?

A

true

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17
Q

An IGU is:

a. an assembly of two glass sheets
b. an assembly of two glass sheets with an intervening space
c. a sealed assembly of two glass sheets with an intervening space and a spacer
d. none of the above

A

c. a sealed assembly of two glass sheets with an intervening space and spacer

18
Q

Which type of gas is used in an IGU?

a. AIR
b. Argon
c. Krypton
d. all of the above

A

a. all of the above

19
Q

To obtain an IGU with a high R-value, the space between the glass sheets should be:

a. air filled
b. argon filled
c. hydrogen filled

A

b. argon filled

20
Q

Surface 3 in an IGU is:

a. the surface of the exterior glass sheet facing the exterior
b. the surface of the interior glass sheet facing the interior
c. the surface of the exterior glass sheet facing the intervening space
d. the surface of the interior glass sheet facing the intervening space.

A

d. the surface of the interior glass sheet facing the intervening space.

21
Q

The approximate R-value of a clear glass sheet is:

a. 1.0
b. 2.0
c. 3.0

A

a. 1.0

22
Q

The approximate R-value of a tinted glass sheet is:

a. 1.0
b. 2.0
c. 3.0

A

a. 1.0

23
Q

The approximate R-value of an air filled IGU is:

a. 1.0
b. 2.0
c. 3.0
d. 4.0

A

b. 2.0

24
Q

The approximate R-value of an air-filled IGU with a low E-coated glass is:

a. 1.0
b. 2.0
c. 3.0
d. 4.0

A

c. 3.0

25
Q

The R-value of an aluminum-framed glazing is generally:

a. higher than that of glass
b. lower than that of glass
c. equal to that of glass

A

b. lower than that of glass

26
Q

Luminated glass is:

a. an assembly of two glass sheets welded (fused) together into one sheet.
b. an assembly of two glass sheets with an intervening space
c. a sealed assembly of two glass sheets with an intervening space
d. an assembly of two glass sheets fused together with a plastic interlayer

A

d. an assembly of two glass sheets fused together with a plastic interlayer

27
Q

Which of the following statements is true about plastic glazing?
a. it is stronger than glass
b. it is more vapor permeable than glass
c, it is less scratch resistant than glass
d. all of the above
e. none of the above

A

d. all of the above

28
Q

The primary reason for the limited use of plastic glazing in buildings is that is is more expensive than glass. true or false?

A

False

29
Q

Which type of glass is commonly used in drive-in bank windows?

a. annealed glass
b. tempered glass
c. laminated glass
d. heat strengthened glass

A

c. laminated glass

30
Q

Glass can be tempered as well as laminated; that is, laminated, tempered glass is available. true or false?

A

True

31
Q

a glazing stop is used:

a. as a bearing support for glass
b. to seal the glass against water and air infiltration
c. to provide lateral support to glass
d. none of the above

A

c. to provide lateral support to glass

32
Q

If the glass is sealed with preshimmed tape and sealant, the glazing is referred to as:

a. dry glazed
b. wet glazed
c. dry/wet glazed
d. wet/wet glazed

A

b. wet glazed

33
Q

A heel bead is used in a glazing pocket. true or false?

A

True

34
Q

A heel bead is used to:

a. increase the R-value of glazing
b. decrease the solar heat gain through glass
c. decrease water infiltration through glazing
d. none of the above

A

C. decrease water infiltration through glazing

35
Q

Building surfaces emit:

a. short-wave radiation
b. ultraviolet radiation
c. long-wave radiation

A

c. long wave radiation

36
Q

Glass is virtually opaque to:

a. short wave radiation
b. ultraviolet radiation
c. long-wave radiation

A

c. long-wave radiation

37
Q

Solar radiation is:

a. short wave radiation
b. long-wave radiation

A

a. short wave radiation

38
Q

A low E glass is a poor reflector of long-wave radiation. true or false?

A

false

39
Q

The condensation resistance factor (CRF) of glazing is directly related to:

a. the material used in framing members of glazing
b. whether or not reflective glass has been used in glazing
c. whether or not tempered glass been used in the glazing
d. the R-value of the glazing

A

d. The R-value of the glazing

40
Q

The minimum value of the CRF generally specified is:

a. 55
b. 45
c. 35
d. 25

A

c. 35

AECT110 (27 decks)

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