Page 1 of 94
Glazing (Residential/Commercial) Practice
Exam Practice Exam Actual Questions with
Answers and Rationales| Instant
Download PDF.
1. Which type of glass is produced by heating and then
rapidly cooling to create surface compression?
A) Annealed glass
B) Tempered glass
C) Laminated glass
D) Wired glass
Answer: B
Rationale: Tempered glass is heat-strengthened via rapid
cooling (quenching), creating compressive stress on surfaces and
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tensile stress internally. It breaks into small, relatively harmless
cubes.
2. What is the primary safety characteristic of laminated
glass?
A) It shatters into small cubes
B) It remains bonded to an interlayer (usually PVB) when broken
C) It cannot be cut after manufacturing
D) It is fire-resistant
Answer: B
Rationale: Laminated glass uses a polyvinyl butyral (PVB) or
ionoplast interlayer that holds broken shards in place, reducing
injury risk and providing security.
3. Which glass type is required by building code in hazardous
locations (e.g., doors, sidelites near floor)?
A) Annealed
B) Tempered or laminated
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C) Insulated glass units (IGU) only
D) Wired glass
Answer: B
Rationale: Building codes (e.g., IBC 2406) require safety glazing
(tempered or laminated) in hazardous locations such as doors,
shower enclosures, and glazing near floors.
4. Low-E (low emissivity) glass coating primarily reduces:
A) Visible light transmission
B) UV transmission
C) Heat transfer through radiation
D) Sound transmission
Answer: C
Rationale: Low-E coatings reflect long-wave infrared (heat)
while allowing visible light to pass, improving thermal
performance (U-factor).
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5. Which of the following has the highest solar heat gain
coefficient (SHGC)?
A) Double-pane clear glass
B) Triple-pane with low-E and argon
C) Single-pane clear glass
D) Reflective coated glass
Answer: C
Rationale: Single-pane clear glass allows maximum solar
radiation to pass. Low-E coatings and multiple panes reduce
SHGC.
6. The “U-factor” of a window measures:
A) Solar heat gain
B) Rate of heat transfer (insulating ability)
C) Visible light transmission
D) Condensation resistance
Glazing (Residential/Commercial) Practice
Exam Practice Exam Actual Questions with
Answers and Rationales| Instant
Download PDF.
1. Which type of glass is produced by heating and then
rapidly cooling to create surface compression?
A) Annealed glass
B) Tempered glass
C) Laminated glass
D) Wired glass
Answer: B
Rationale: Tempered glass is heat-strengthened via rapid
cooling (quenching), creating compressive stress on surfaces and
,Page 2 of 94
tensile stress internally. It breaks into small, relatively harmless
cubes.
2. What is the primary safety characteristic of laminated
glass?
A) It shatters into small cubes
B) It remains bonded to an interlayer (usually PVB) when broken
C) It cannot be cut after manufacturing
D) It is fire-resistant
Answer: B
Rationale: Laminated glass uses a polyvinyl butyral (PVB) or
ionoplast interlayer that holds broken shards in place, reducing
injury risk and providing security.
3. Which glass type is required by building code in hazardous
locations (e.g., doors, sidelites near floor)?
A) Annealed
B) Tempered or laminated
,Page 3 of 94
C) Insulated glass units (IGU) only
D) Wired glass
Answer: B
Rationale: Building codes (e.g., IBC 2406) require safety glazing
(tempered or laminated) in hazardous locations such as doors,
shower enclosures, and glazing near floors.
4. Low-E (low emissivity) glass coating primarily reduces:
A) Visible light transmission
B) UV transmission
C) Heat transfer through radiation
D) Sound transmission
Answer: C
Rationale: Low-E coatings reflect long-wave infrared (heat)
while allowing visible light to pass, improving thermal
performance (U-factor).
, Page 4 of 94
5. Which of the following has the highest solar heat gain
coefficient (SHGC)?
A) Double-pane clear glass
B) Triple-pane with low-E and argon
C) Single-pane clear glass
D) Reflective coated glass
Answer: C
Rationale: Single-pane clear glass allows maximum solar
radiation to pass. Low-E coatings and multiple panes reduce
SHGC.
6. The “U-factor” of a window measures:
A) Solar heat gain
B) Rate of heat transfer (insulating ability)
C) Visible light transmission
D) Condensation resistance
