Question 1

Using a sketch, explain why a tempered glass sheet is stronger than an annealed glass sheet.

Accepted Answer

Tempered glass, also known as toughened

Question 2

In which situations is heat- strengthened (HSG)used?

Accepted Answer

HSG is generally used where glass must h

Question 3

The microscopic (atomic)structure of glass resembles that of

Accepted Answer

A) gases. 
B) liquids. 
C) solids. 
D) none of the above. 
A) gases. 
B) liquids. 
C) solids. 
D) none of the above.

Question 4

Give the approximate U- value of:
(i)single clear sheet of glass
(ii)single tinted sheet of glass
(iii)an IGU with clear sheets of glass and dry air space

Accepted Answer

(i)single clear sheet of glass

Question 5

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

Accepted Answer

A) lower than that of glass. 
B) higher than that of glass. 
C) equal to that of glass. 
A) lower than that of glass. 
B) higher than that of glass. 
C) equal to that of glass.

Question 6

The solar heat gain coefficient (SHGC)is a ratio of two quantities. Is it > 1.0 or < 1.0? Give reason for your answer.

Accepted Answer

SHGC < 1.0 because 100% of sol

Question 7

Currently, what is the maximum fire rating achievable in a glazed wall?

Accepted Answer

2- hour fi

Question 8

To make glass transparent, the molten glass ingredients must be

Accepted Answer

A) cooled rapidly during manufacture. 
B) cooled slowly during manufacture. 
C) cooled very slowly during manufacture. 
D) any one of the above. 
A) cooled rapidly during manufacture. 
B) cooled slowly during manufacture. 
C) cooled very slowly during manufacture. 
D) any one of the above.

Question 9

Glass is virtually opaque to

Accepted Answer

A) shortwave radiation. 
B) longwave radiation. 
C) ultraviolet radiation. 
D) all of the above. 
E) none of the above. 
A) shortwave radiation. 
B) longwave radiation. 
C) ultraviolet radiation. 
D) all of the above. 
E) none of the above.

Question 10

An IGU is

Accepted Answer

A) a sealed assembly of two glass sheets with an intervening space. 
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) an assembly of two glass sheets. 
E) none of the above. 
A) a sealed assembly of two glass sheets with an intervening space. 
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) an assembly of two glass sheets. 
E) none of the above.

Question 11

What is the definition of solar heat gain coefficient (SHGC)?

Accepted Answer

SHGC = [(solar energ

Question 12

What is heat- soaked glass and where is it used?

Accepted Answer

Heat-soaked glass is a type of safety gl

Question 13

Tinted glass absorbs more solar radiation than clear glass.

Accepted Answer

A) True 
 B)False

Question 14

Apart from tempered glass, which other glass is considered safety glass?

Accepted Answer

The answer of Apart from tempered glass, which other glass...

Question 15

What is condensation resistance factor (CRF)? Which factors affect its value?

Accepted Answer

CRF is a property of glazing that measur

Question 16

What is modern glass manufacturing process called and where was it first used?

Accepted Answer

Float glass process; first use

Question 17

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

Accepted Answer

A) the material used in framing members of glazing. 
B) the R- value of the glazing. 
C) whether or not tempered glass has been used in the glazing. 
D) whether or not reflective glass has been used in the glazing. 
E) all of the above. 
A) the material used in framing members of glazing. 
B) the R- value of the glazing. 
C) whether or not tempered glass has been used in the glazing. 
D) whether or not reflective glass has been used in the glazing. 
E) all of the above.

Question 18

Which raw materials are used in the manufacturing of flat glass?

Accepted Answer

Sand (silicon dioxide, also ca

Question 19

Which of the following indices measures the effectiveness of the transparency of glass in relation to the solar heat gain through glass?

Accepted Answer

A) LSG 
B) UVT 
C) SC 
D) SHGC 
E) None of the above 
A) LSG 
B) UVT 
C) SC 
D) SHGC 
E) None of the above

Question 20

Which type of glass would you recommend for the following locations?

Accepted Answer

A)  Sliding- glass entrance door 
B)  Spandrel area of an all- glass curtain wall 
C)  Teller window of a drive- in bank 
A)  Sliding- glass entrance door 
B)  Spandrel area of an all- glass curtain wall 
C)  Teller window of a drive- in bank

Exam 30: Glass, Glazing, and Light-Transmitting Plastics

Using a sketch, explain why a tempered glass sheet is stronger than an annealed glass sheet.

In which situations is heat- strengthened (HSG)used?

The microscopic (atomic)structure of glass resembles that of

Give the approximate U- value of: (i)single clear sheet of glass (ii)single tinted sheet of glass (iii)an IGU with clear sheets of glass and dry air space

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

The solar heat gain coefficient (SHGC)is a ratio of two quantities. Is it > 1.0 or < 1.0? Give reason for your answer.

Currently, what is the maximum fire rating achievable in a glazed wall?

To make glass transparent, the molten glass ingredients must be

Glass is virtually opaque to

An IGU is

What is the definition of solar heat gain coefficient (SHGC)?

What is heat- soaked glass and where is it used?

Tinted glass absorbs more solar radiation than clear glass.

Apart from tempered glass, which other glass is considered safety glass?

What is condensation resistance factor (CRF)? Which factors affect its value?

What is modern glass manufacturing process called and where was it first used?

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

Which raw materials are used in the manufacturing of flat glass?

Which of the following indices measures the effectiveness of the transparency of glass in relation to the solar heat gain through glass?

Which type of glass would you recommend for the following locations?

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