Question 1

Building surfaces emit

Accepted Answer

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

Question 2

The minimum value of the CRF generally specified is

Accepted Answer

A) 55. 
B) 25. 
C) 15. 
D) 35. 
E) 45. 
A) 55. 
B) 25. 
C) 15. 
D) 35. 
E) 45.

Question 3

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

Accepted Answer

A) subjected to cyclic heating and cooling. 
B) annealed. 
C) heat strengthened in a furnace. 
D) etched. 
E) all of the above. 
A) subjected to cyclic heating and cooling. 
B) annealed. 
C) heat strengthened in a furnace. 
D) etched. 
E) all of the above.

Question 4

Which of the following statements is true about plastic glazing?

Accepted Answer

A) It is less scratch resistant than glass. 
B) It is more vapor permeable than glass. 
C) It is stronger than glass. 
D) All of the above. 
E) None of the above. 
A) It is less scratch resistant than glass. 
B) It is more vapor permeable than glass. 
C) It is stronger than glass. 
D) All of the above. 
E) None of the above.

Question 5

A low- E glass is a poor reflector of longwave radiation.

Accepted Answer

A) True 
 B)False

Question 6

A heel bead is used to

Accepted Answer

A) decrease the solar heat gain through glass. 
B) increase the wind- load resistance of glazing. 
C) increase the R- value of glazing. 
D) decrease water infiltration through glazing. 
E) none of the above. 
A) decrease the solar heat gain through glass. 
B) increase the wind- load resistance of glazing. 
C) increase the R- value of glazing. 
D) decrease water infiltration through glazing. 
E) none of the above.

Question 7

According to the glass industry, a low- E coating in an insulating glass unit (IGU)is best placed on surface 2 in warm climates and surface 3 in cold climates. However, this recommendation is modified if the IGU also has a reflective coating. What is that recommendation?

Accepted Answer

If the IGU has both low- E coa

Question 8

Name three strategies that glass manufacturers may use to produce glass with low SHGC.

Accepted Answer

(i)Reflective coatin

Question 9

In the float glass manufacturing process, the molten glass (raw materials)floating over molten tin bath is rapidly cooled, which solidifies it into a sheet. The sheet emerging from tin bath is slowly heated in the annealing chamber and then allowed to cool to room temperature before being cut to required sizes. Why is the glass subjected first to rapid cooling and why is it subsequently heated?

Accepted Answer

Rapid cooling ensures that molten glass

Question 10

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

Accepted Answer

A) Heat- strengthened glass 
B) Sheet glass 
C) Tempered glass 
D) Annealed glass 
E) Plate glass 
A) Heat- strengthened glass 
B) Sheet glass 
C) Tempered glass 
D) Annealed glass 
E) Plate glass

Question 11

Three types of heat- modified glass are available. List them in order of the strongest to the weakest type. If any two types are of the same strength, mention so.

Accepted Answer

(i)Tempered glass, (ii)Heat- s

Question 12

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

Accepted Answer

A) CRF. 
B) SHGC. 
C) UVT. 
D) VT. 
E) none of the above. 
A) CRF. 
B) SHGC. 
C) UVT. 
D) VT. 
E) none of the above.

Question 13

Although tempered glass (TG)is used as safety glass, it can itself be a safety hazard in some situations. Explain how.

Accepted Answer

TG can break abruptly without an apparen

Question 14

What is the difference between flat glass and float glass?

Accepted Answer

Flat glass refers to a sheet of glass, u

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

Building surfaces emit

The minimum value of the CRF generally specified is

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

Which of the following statements is true about plastic glazing?

A low- E glass is a poor reflector of longwave radiation.

A heel bead is used to

According to the glass industry, a low- E coating in an insulating glass unit (IGU)is best placed on surface 2 in warm climates and surface 3 in cold climates. However, this recommendation is modified if the IGU also has a reflective coating. What is that recommendation?

Name three strategies that glass manufacturers may use to produce glass with low SHGC.

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

Three types of heat- modified glass are available. List them in order of the strongest to the weakest type. If any two types are of the same strength, mention so.

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

Although tempered glass (TG)is used as safety glass, it can itself be a safety hazard in some situations. Explain how.

What is the difference between flat glass and float 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

Roofing-I Low-Slope Roofs

Roofing-I Steep Roofs

Stairs

Floor Coverings

Ceilings

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