Question 1

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

Accepted Answer

A) Tempered glass 
B) Annealed glass 
C) Laminated glass 
D) Heat- strengthened glass 
A) Tempered glass 
B) Annealed glass 
C) Laminated glass 
D) Heat- strengthened glass

Question 2

If the reflective coating on 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.

Accepted Answer

A) True 
 B)False

Question 3

Glass industry uses a standard method of designating the surfaces of flat glass products, as 1, 2, 3, and so on. Does the numbering of surface designation begin from the outside surface or inside surface of a glass product?

Accepted Answer

The answer of Glass industry uses a standard method of...

Question 4

The primary reason for heat- modifying glass is to increase its bending strength. How much stronger is heat- strengthened glass (HSG)and tempered glass (TG)as compared with annealed glass?

Accepted Answer

HSG is 2- times stro

Question 5

What makes tempered glass (TG)stronger than annealed glass (AG)?

Accepted Answer

TG is made by taking an AG sheet precut

Question 6

If low- E glass is used in an IGU, on which surface is the low- E coating placed, and why? Explain.

Accepted Answer

The low-E coating is typically placed on

Question 7

What is heat- strengthened glass (HSG)?

Accepted Answer

HSG is heat modified in the same way as

Question 8

The main raw material for manufacturing flat glass is sand (silicon dioxide, also called silica). However, two other materials-sodium oxide, and lime (calcium oxide)-are added to silica. What are their roles?

Accepted Answer

Sodium oxide lowers the meting

Question 9

What is radiation- shielding glass and where is it commonly used?

Accepted Answer

Glass that contains

Question 10

Spontaneous breakage generally occurs in

Accepted Answer

A) heat- strengthened glass. 
B) annealed glass. 
C) laminated glass. 
D) heat- soaked tempered glass. 
E) tempered glass. 
A) heat- strengthened glass. 
B) annealed glass. 
C) laminated glass. 
D) heat- soaked tempered glass. 
E) tempered glass.

Question 11

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

Accepted Answer

A) Heat- strengthened glass 
B) Tempered glass 
C) Annealed glass 
D) None of the above 
A) Heat- strengthened glass 
B) Tempered glass 
C) Annealed glass 
D) None of the above

Question 12

The primary reason for the limited use of plastic glazing in buildings is that it is more expensive than glass.

Accepted Answer

A) True 
 B)False

Question 13

What is the difference between the U- value of glass and U- value of glazing?

Accepted Answer

U- value of glass refers to that of glas

Question 14

Why is flat glass called soda- lime glass?

Accepted Answer

The primary raw material for manufacturi

Question 15

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

Accepted Answer

A) 1)0. 
B) 2)0. 
C) 3)0. 
D) 4)0. 
E) none of the above. 
A) 1)0. 
B) 2)0. 
C) 3)0. 
D) 4)0. 
E) none of the above.

Question 16

Using a sketch, explain the standard surface designation system for (a)monolithic glass, (b)laminated glass, and (c)an IGU.

Accepted Answer

The standard surface designation system

Question 17

The low- E coating is best placed where it is protected from abrasion, i.e., on surface 2 or 3 in an insulating glass unit (IGU). What is the glass industry recommendation for the surface on which to put the low- E coating in: (i)a cold climate and (ii)a warm climate and why?

Accepted Answer

(i)Cold climate: sur

Question 18

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

Accepted Answer

A) Heat- soaked tempered glass 
B) Tempered glass 
C) Heat- strengthened glass 
D) All of the above 
E) None of the above 
A) Heat- soaked tempered glass 
B) Tempered glass 
C) Heat- strengthened glass 
D) All of the above 
E) None of the above

Question 19

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

Accepted Answer

A) double- strength glass. 
B) single- layer glass. 
C) monolithic glass. 
D) single- strength glass. 
E) basic glass. 
A) double- strength glass. 
B) single- layer glass. 
C) monolithic glass. 
D) single- strength glass. 
E) basic glass.

Question 20

The approximate R- value of a tinted glass sheet is

Accepted Answer

A) 1)0. 
B) 2)0. 
C) 3)0. 
D) 4)0. 
E) 5)0. 
A) 1)0. 
B) 2)0. 
C) 3)0. 
D) 4)0. 
E) 5)0.

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

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

If the reflective coating on 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.

Glass industry uses a standard method of designating the surfaces of flat glass products, as 1, 2, 3, and so on. Does the numbering of surface designation begin from the outside surface or inside surface of a glass product?

The primary reason for heat- modifying glass is to increase its bending strength. How much stronger is heat- strengthened glass (HSG)and tempered glass (TG)as compared with annealed glass?

What makes tempered glass (TG)stronger than annealed glass (AG)?

If low- E glass is used in an IGU, on which surface is the low- E coating placed, and why? Explain.

What is heat- strengthened glass (HSG)?

The main raw material for manufacturing flat glass is sand (silicon dioxide, also called silica). However, two other materials-sodium oxide, and lime (calcium oxide)-are added to silica. What are their roles?

What is radiation- shielding glass and where is it commonly used?

Spontaneous breakage generally occurs in

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

The primary reason for the limited use of plastic glazing in buildings is that it is more expensive than glass.

What is the difference between the U- value of glass and U- value of glazing?

Why is flat glass called soda- lime glass?

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

Using a sketch, explain the standard surface designation system for (a)monolithic glass, (b)laminated glass, and (c)an IGU.

The low- E coating is best placed where it is protected from abrasion, i.e., on surface 2 or 3 in an insulating glass unit (IGU). What is the glass industry recommendation for the surface on which to put the low- E coating in: (i)a cold climate and (ii)a warm climate and why?

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

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

The approximate R- value of a tinted glass sheet is

An Overview of the Building Delivery Process How Buildings Come Into Being

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Load Resistance the Structural Properties of Materials

Properties of the Envelope-I Thermal Properties

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Principles of Joints and Sealants Expansion and Contraction Control

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