Page 1 of 114
Glazing Practice Exam – Questions with
Answers & Rationales | Instant Pdf
Download Construction Technology /
Glazing (Glass Installation) / Building
Trades
1. What is the primary difference between tempered glass and
annealed glass?
A) Tempered glass is softer and easier to cut
B) Tempered glass is heat-treated to increase strength and
breaks into small, dull pieces
C) Annealed glass is stronger than tempered glass
D) Tempered glass cannot be used in commercial applications
Correct Answer: B
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Rationale: Tempered glass undergoes a heat treatment process
that makes it four to five times stronger than annealed glass.
When broken, it fractures into small, granular pieces rather than
sharp shards, reducing injury risk. This property qualifies it as a
safety glazing material .
Q2. During glass manufacturing, what is the primary purpose of
the annealing process?
A) To increase tensile strength beyond tempered glass
B) To rapidly cool the glass for increased hardness
C) To remove internal stresses and prevent spontaneous
breakage
D) To chemically bond coatings to the glass surface
Correct Answer: C
Rationale: Annealing is a controlled cooling process that relieves
internal stresses formed during glass manufacturing. Without
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proper annealing, glass would be prone to spontaneous
breakage during handling, cutting, or installation due to uneven
cooling stresses .
Q3. Which type of glass consists of two or more layers bonded
together with a plastic interlayer?
A) Tempered glass
B) Float glass
C) Laminated glass
D) Insulated glass
Correct Answer: C
Rationale: Laminated glass is composed of multiple glass layers
bonded with a polyvinyl butyral (PVB) or other interlayer. This
construction holds broken pieces together upon impact, providing
safety, security, sound reduction, and UV protection .
, Page 4 of 114
Q4. What type of glass is required in hazardous locations such
as shower enclosures, doors, and sidelites according to building
codes?
A) Plate glass
B) Wired glass
C) Tempered or safety glazing
D) Decorative glass only
Correct Answer: C
Rationale: Building codes require safety glazing (tempered or
laminated glass) in hazardous locations—areas where human
impact is likely, including shower enclosures, doors, sidelites, and
glazing near floors. This requirement reduces the risk of serious
injury from broken glass .
Glazing Practice Exam – Questions with
Answers & Rationales | Instant Pdf
Download Construction Technology /
Glazing (Glass Installation) / Building
Trades
1. What is the primary difference between tempered glass and
annealed glass?
A) Tempered glass is softer and easier to cut
B) Tempered glass is heat-treated to increase strength and
breaks into small, dull pieces
C) Annealed glass is stronger than tempered glass
D) Tempered glass cannot be used in commercial applications
Correct Answer: B
,Page 2 of 114
Rationale: Tempered glass undergoes a heat treatment process
that makes it four to five times stronger than annealed glass.
When broken, it fractures into small, granular pieces rather than
sharp shards, reducing injury risk. This property qualifies it as a
safety glazing material .
Q2. During glass manufacturing, what is the primary purpose of
the annealing process?
A) To increase tensile strength beyond tempered glass
B) To rapidly cool the glass for increased hardness
C) To remove internal stresses and prevent spontaneous
breakage
D) To chemically bond coatings to the glass surface
Correct Answer: C
Rationale: Annealing is a controlled cooling process that relieves
internal stresses formed during glass manufacturing. Without
,Page 3 of 114
proper annealing, glass would be prone to spontaneous
breakage during handling, cutting, or installation due to uneven
cooling stresses .
Q3. Which type of glass consists of two or more layers bonded
together with a plastic interlayer?
A) Tempered glass
B) Float glass
C) Laminated glass
D) Insulated glass
Correct Answer: C
Rationale: Laminated glass is composed of multiple glass layers
bonded with a polyvinyl butyral (PVB) or other interlayer. This
construction holds broken pieces together upon impact, providing
safety, security, sound reduction, and UV protection .
, Page 4 of 114
Q4. What type of glass is required in hazardous locations such
as shower enclosures, doors, and sidelites according to building
codes?
A) Plate glass
B) Wired glass
C) Tempered or safety glazing
D) Decorative glass only
Correct Answer: C
Rationale: Building codes require safety glazing (tempered or
laminated glass) in hazardous locations—areas where human
impact is likely, including shower enclosures, doors, sidelites, and
glazing near floors. This requirement reduces the risk of serious
injury from broken glass .
