AZ L-62 Glazing Contractor Exam Questions
and Correct Answers (Verified Answers)
Plus Rationale 2027 Q&A| Instant
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1. What is the primary purpose of a glazing system in a building?
a. To provide structural framing only
b. To provide weather protection, daylight, visibility, and thermal
performance
c. To eliminate the need for wall insulation
d. To replace all exterior doors
Answer: b. To provide weather protection, daylight, visibility, and
thermal performance
Rationale: A glazing system is designed to perform several functions
simultaneously, including admitting natural light, allowing visibility,
controlling air and water infiltration, and contributing to thermal and
,energy performance. Proper glazing also helps protect the building
interior from weather.
2. Which material is most commonly used for architectural window
glazing?
a. Cast iron
b. Aluminum
c. Glass
d. Concrete
Answer: c. Glass
Rationale: Glass is the primary transparent material used in
architectural glazing because it provides visibility and daylight while
being available in numerous forms, including annealed, tempered,
laminated, insulated, low-emissivity, and coated glass.
3. What is tempered glass specifically designed to provide?
a. Increased resistance to thermal and mechanical stresses with safer
breakage characteristics
b. Complete resistance to scratching
c. Unlimited resistance to impact
d. Improved sound transmission
,Answer: a. Increased resistance to thermal and mechanical stresses
with safer breakage characteristics
Rationale: Tempered glass is heat-treated to increase its strength and
thermal resistance. When it breaks, it generally fractures into
relatively small granular particles rather than large sharp shards,
making it appropriate for many safety-glazing applications.
4. What happens to tempered glass when it breaks?
a. It remains in one large piece
b. It normally breaks into small, relatively blunt particles
c. It becomes flexible
d. It melts immediately
Answer: b. It normally breaks into small, relatively blunt particles
Rationale: Tempering creates internal stresses within the glass. When
the glass fails, these stresses cause it to fracture into many small
pieces. This characteristic reduces the likelihood of severe lacerations
compared with ordinary annealed glass.
5. What is laminated glass composed of?
a. Two or more glass panes bonded to an interlayer
b. A single pane coated with paint
, c. Aluminum sheets separated by air
d. Plastic without any glass
Answer: a. Two or more glass panes bonded to an interlayer
Rationale: Laminated glass generally consists of two or more layers of
glass bonded together with an interlayer such as PVB or another
approved material. The interlayer helps hold the glass together after
breakage and can also provide acoustic, UV, and security benefits.
6. What is a major advantage of laminated safety glass?
a. It cannot ever crack
b. The interlayer can help retain broken glass in place
c. It requires no framing
d. It is always lighter than single-pane glass
Answer: b. The interlayer can help retain broken glass in place
Rationale: When laminated glass breaks, the interlayer tends to hold
the fractured pieces together. This helps maintain a barrier and can
reduce the risk of falling glass, making laminated glass useful in
locations where containment after breakage is important.
7. What is the purpose of an insulated glass unit (IGU)?
a. To increase air leakage
b. To provide multiple panes separated by a sealed space for improved
and Correct Answers (Verified Answers)
Plus Rationale 2027 Q&A| Instant
Download Pdf
1. What is the primary purpose of a glazing system in a building?
a. To provide structural framing only
b. To provide weather protection, daylight, visibility, and thermal
performance
c. To eliminate the need for wall insulation
d. To replace all exterior doors
Answer: b. To provide weather protection, daylight, visibility, and
thermal performance
Rationale: A glazing system is designed to perform several functions
simultaneously, including admitting natural light, allowing visibility,
controlling air and water infiltration, and contributing to thermal and
,energy performance. Proper glazing also helps protect the building
interior from weather.
2. Which material is most commonly used for architectural window
glazing?
a. Cast iron
b. Aluminum
c. Glass
d. Concrete
Answer: c. Glass
Rationale: Glass is the primary transparent material used in
architectural glazing because it provides visibility and daylight while
being available in numerous forms, including annealed, tempered,
laminated, insulated, low-emissivity, and coated glass.
3. What is tempered glass specifically designed to provide?
a. Increased resistance to thermal and mechanical stresses with safer
breakage characteristics
b. Complete resistance to scratching
c. Unlimited resistance to impact
d. Improved sound transmission
,Answer: a. Increased resistance to thermal and mechanical stresses
with safer breakage characteristics
Rationale: Tempered glass is heat-treated to increase its strength and
thermal resistance. When it breaks, it generally fractures into
relatively small granular particles rather than large sharp shards,
making it appropriate for many safety-glazing applications.
4. What happens to tempered glass when it breaks?
a. It remains in one large piece
b. It normally breaks into small, relatively blunt particles
c. It becomes flexible
d. It melts immediately
Answer: b. It normally breaks into small, relatively blunt particles
Rationale: Tempering creates internal stresses within the glass. When
the glass fails, these stresses cause it to fracture into many small
pieces. This characteristic reduces the likelihood of severe lacerations
compared with ordinary annealed glass.
5. What is laminated glass composed of?
a. Two or more glass panes bonded to an interlayer
b. A single pane coated with paint
, c. Aluminum sheets separated by air
d. Plastic without any glass
Answer: a. Two or more glass panes bonded to an interlayer
Rationale: Laminated glass generally consists of two or more layers of
glass bonded together with an interlayer such as PVB or another
approved material. The interlayer helps hold the glass together after
breakage and can also provide acoustic, UV, and security benefits.
6. What is a major advantage of laminated safety glass?
a. It cannot ever crack
b. The interlayer can help retain broken glass in place
c. It requires no framing
d. It is always lighter than single-pane glass
Answer: b. The interlayer can help retain broken glass in place
Rationale: When laminated glass breaks, the interlayer tends to hold
the fractured pieces together. This helps maintain a barrier and can
reduce the risk of falling glass, making laminated glass useful in
locations where containment after breakage is important.
7. What is the purpose of an insulated glass unit (IGU)?
a. To increase air leakage
b. To provide multiple panes separated by a sealed space for improved
