Question 1

Which glass type is heat- modified glass (also called heat- treated glass)and what is the purpose of heat treating glass?

Accepted Answer

The glass that is heat modified is annea

Question 2

What is security glazing and where is it required?

Accepted Answer

Security glazing refers to gla

Question 3

What is heat- soaked tempered glass (TG)and where is it used?

Accepted Answer

TG unit that has been subjected to sever

Question 4

What is the thickness of a commonly used insulating unit (IGU)in commercial buildings?

Accepted Answer

The answer of What is the thickness of a commonly...

Question 5

Which type of gas is used in an IGU?

Accepted Answer

A) Krypton 
B) Argon 
C) Air 
D) All of the above 
E) None of the above 
A) Krypton 
B) Argon 
C) Air 
D) All of the above 
E) None of the above

Question 6

Explain how a low- E coating increases the R- value of glass.

Accepted Answer

Low-E, or low-emissivity, coatings are t

Question 7

Using a sketch, explain the anatomy of an IGU.

Accepted Answer

An IGU, or insulated glass unit, is a ty

Question 8

An insulating glass unit (IGU)consists of two flat glass products separated by a space containing air or a gas. What is the role of air or gas in an IGU?

Accepted Answer

The air or gas- fill

Question 9

Is heat- strengthened glass (HSG)safety glass like the tempered glass (TG)? Does spontaneous breakage occur in HSG?

Accepted Answer

HSG is not a safety glass as its breakag

Question 10

A heel bead is used in a glazing pocket.

Accepted Answer

A) True 
 B)False

Question 11

Because tempered glass (TG)has a safe breakage pattern, it is used in selected panes in multistory buildings to allow safe interior access to fire fighters, called knockout glass. However, it can be a safety hazard due to TG's spontaneous breakage, leading to glass pieces falling down from on walking areas on the ground. How do building codes address it in downtown areas where the buildings are not offset from walking areas?

Accepted Answer

Protective screens to arrest f

Question 12

Laminated glass is

Accepted Answer

A) a sealed assembly of two glass sheets with an intervening space. 
B) an assembly of two glass sheets fused together with a plastic interlayer. 
C) an assembly of two glass sheets with an intervening space. 
D) an assembly of two glass sheets welded (fused)together into one sheet. 
E) none of the above. 
A) a sealed assembly of two glass sheets with an intervening space. 
B) an assembly of two glass sheets fused together with a plastic interlayer. 
C) an assembly of two glass sheets with an intervening space. 
D) an assembly of two glass sheets welded (fused)together into one sheet. 
E) none of the above.

Question 13

Why is spandrel glass subjected to greater thermal stress than vision glass in a curtain wall?

Accepted Answer

The vision glass is exposed to outside a

Question 14

What is the difference between shortwave radiation and longwave radiation?

Accepted Answer

All objects radiate energy at all times

Question 15

How many surfaces are there in each of the following?
(i)A single sheet of glass
(ii)An insulating glass unit (IGU)
(iii)A laminated glass
(iv)An IGU with a single sheet of glass on one face and a laminated glass on other face

Accepted Answer

(i)A single sheet of glass (2)

Question 16

What is the difference between reflective glass and low- E glass?

Accepted Answer

A reflective glass reflects direct solar

Question 17

What is a low- E glass, and what are its benefits?

Accepted Answer

Low-E glass, or low emissivity glass, is

Question 18

Apart from air, which other gases are used in an insulating glass unit (IGU)and why?

Accepted Answer

Argon and krypton are used in

Question 19

The approximate R- value of an air- filled IGU with a low- E- coated glass 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 20

Using sketches and notes, explain the process of manufacturing flat glass.

Accepted Answer

Manufacturing flat glass involves severa

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

Which glass type is heat- modified glass (also called heat- treated glass)and what is the purpose of heat treating glass?

What is security glazing and where is it required?

What is heat- soaked tempered glass (TG)and where is it used?

What is the thickness of a commonly used insulating unit (IGU)in commercial buildings?

Which type of gas is used in an IGU?

Explain how a low- E coating increases the R- value of glass.

Using a sketch, explain the anatomy of an IGU.

An insulating glass unit (IGU)consists of two flat glass products separated by a space containing air or a gas. What is the role of air or gas in an IGU?

Is heat- strengthened glass (HSG)safety glass like the tempered glass (TG)? Does spontaneous breakage occur in HSG?

A heel bead is used in a glazing pocket.

Laminated glass is

Why is spandrel glass subjected to greater thermal stress than vision glass in a curtain wall?

What is the difference between shortwave radiation and longwave radiation?

How many surfaces are there in each of the following? (i)A single sheet of glass (ii)An insulating glass unit (IGU) (iii)A laminated glass (iv)An IGU with a single sheet of glass on one face and a laminated glass on other face

What is the difference between reflective glass and low- E glass?

What is a low- E glass, and what are its benefits?

Apart from air, which other gases are used in an insulating glass unit (IGU)and why?

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

Using sketches and notes, explain the process of manufacturing flat glass.

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

Design and Constructions Regulations

Loads on Buildings

Load Resistance the Structural Properties of Materials

Properties of the Envelope-I Thermal Properties

Properties of the Envelope-II Air and Water Vapor Control

Fire and Smoke-Related Properties

Acoustical Properties of Materials

Principles of Joints and Sealants Expansion and Contraction Control

Principles of Sustainable Construction

Soils and Excavations

Below-Grade Construction Foundation Systems and Basements

Materials for Wood Construction-I Lumber

Materials for Wood Construction-Ii Engineered Wood Products, Fasteners, and Connectors

Wood Light-Frame Construction-I

Wood Light-Frame Construction-II

Structural Insulated Panel Construction

Material Steel and Steel Components

Structural Steel Construction

Cold-Formed Steel Construction

Lime, Portland Cement, and Concrete

Concrete Construction-I Formwork, Reinforcement, and Slabs-On-Ground

Concrete Construction-II Site-Cast and Precast Concrete Framing Systems

Masonry Materials-I Mortar and Brick

Masonry Materials-II Concrete Masonry Units, Natural Stone, and Glass Masonry Units

Masonry and Concrete Bearing Wall Construction

Exterior Wall Cladding-I Principles of Rainwater Infiltration Control

Exterior Wall Cladding-II Masonry, Precast Concrete, and Gfrc

Exterior Wall Cladding-III Stucco, Adhered Veneer, Eifs, Natural Stone, and Insulated Metal Panels

Windows and Doors

Exterior Wall Cladding-Iv Wall System in Glass

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Roofing-I Steep Roofs

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