Maryland Glass and Glazing Contractor
License Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
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1. Which agency administers the Maryland Glass and Glazing Contractor
licensing process under the home improvement regulatory system?
A) Maryland Department of Housing and Urban Development
B) Maryland Home Improvement Commission (MHIC)
C) Maryland State Board of Architects
D) Maryland Construction Licensing Authority
Answer: B
The Maryland Home Improvement Commission (MHIC) is the
regulatory body responsible for licensing and overseeing home
improvement contractors, including glazing-related work when it
falls under residential improvement regulations.
2. What is the primary purpose of safety glazing in residential glass
installations?
A) To improve thermal insulation only
B) To reduce solar glare in buildings
C) To minimize injury risk when glass breaks
, D) To increase sound transmission
Answer: C
Safety glazing is designed to reduce the likelihood of serious injury by
ensuring glass breaks in a safer manner, such as crumbling into small
blunt pieces or holding together with interlayers.
3. Which of the following best describes tempered glass?
A) Glass that is chemically etched for decoration
B) Glass that is slowly cooled for clarity
C) Glass strengthened by rapid cooling after heating
D) Glass made by laminating multiple sheets without heat
Answer: C
Tempered glass is produced by heating and then rapidly cooling the
surface, creating compressive stress that significantly increases its
strength and safety characteristics.
4. Which standard is commonly referenced for impact-resistant safety
glazing requirements?
A) ANSI Z97.1
B) OSHA 1926.501
C) ASTM D638
D) NFPA 101
Answer: A
ANSI Z97.1 establishes performance requirements for safety glazing
materials to ensure they meet impact resistance and fragmentation
standards.
5. What is the function of laminated glass?
A) To reduce weight in structural frames
B) To improve UV transparency
C) To hold shards together using an interlayer when broken
D) To eliminate all thermal transfer
, Answer: C
Laminated glass uses an interlayer, such as PVB, to keep broken glass
fragments adhered, improving safety and security performance.
6. Which type of glass is most likely to remain in its frame after breakage
due to an interlayer?
A) Wired glass
B) Laminated glass
C) Annealed glass
D) Heat-strengthened glass
Answer: B
Laminated glass remains largely intact after breakage because its
interlayer holds fragments together, preventing them from falling
out.
7. In glazing systems, what is the primary purpose of setting blocks?
A) To support the glass weight and prevent contact with frame edges
B) To increase light transmission
C) To seal air leaks in curtain walls
D) To tint glass surfaces
Answer: A
Setting blocks are used to properly support glass panels and
distribute their weight, preventing edge damage and stress
concentration.
8. Which glass type is created by controlled cooling that is less rapid than
tempering but faster than annealing?
A) Laminated glass
B) Heat-strengthened glass
C) Float glass
D) Wired glass
Answer: B
, Heat-strengthened glass is cooled at a moderate rate, making it
stronger than annealed glass but not as strong or fragmented as
tempered glass.
9. What is a key characteristic of annealed glass?
A) It shatters into small cubes
B) It is the strongest type of architectural glass
C) It breaks into large, sharp shards
D) It cannot be cut after production
Answer: C
Annealed glass is standard untreated glass that breaks into large,
sharp pieces, making it less safe compared to tempered or laminated
glass.
10. Which factor most influences wind load calculations for glazing
systems?
A) Glass color
B) Building height and exposure
C) Glass thickness alone
D) Interior lighting design
Answer: B
Wind load calculations depend heavily on building height, location,
and exposure conditions, which determine pressure forces acting on
glazing systems.
11. What is the primary function of low-E coatings on glass?
A) Increase glass weight
B) Reduce heat transfer through radiation
C) Strengthen glass against impact
D) Improve sound amplification
Answer: B
License Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. Which agency administers the Maryland Glass and Glazing Contractor
licensing process under the home improvement regulatory system?
A) Maryland Department of Housing and Urban Development
B) Maryland Home Improvement Commission (MHIC)
C) Maryland State Board of Architects
D) Maryland Construction Licensing Authority
Answer: B
The Maryland Home Improvement Commission (MHIC) is the
regulatory body responsible for licensing and overseeing home
improvement contractors, including glazing-related work when it
falls under residential improvement regulations.
2. What is the primary purpose of safety glazing in residential glass
installations?
A) To improve thermal insulation only
B) To reduce solar glare in buildings
C) To minimize injury risk when glass breaks
, D) To increase sound transmission
Answer: C
Safety glazing is designed to reduce the likelihood of serious injury by
ensuring glass breaks in a safer manner, such as crumbling into small
blunt pieces or holding together with interlayers.
3. Which of the following best describes tempered glass?
A) Glass that is chemically etched for decoration
B) Glass that is slowly cooled for clarity
C) Glass strengthened by rapid cooling after heating
D) Glass made by laminating multiple sheets without heat
Answer: C
Tempered glass is produced by heating and then rapidly cooling the
surface, creating compressive stress that significantly increases its
strength and safety characteristics.
4. Which standard is commonly referenced for impact-resistant safety
glazing requirements?
A) ANSI Z97.1
B) OSHA 1926.501
C) ASTM D638
D) NFPA 101
Answer: A
ANSI Z97.1 establishes performance requirements for safety glazing
materials to ensure they meet impact resistance and fragmentation
standards.
5. What is the function of laminated glass?
A) To reduce weight in structural frames
B) To improve UV transparency
C) To hold shards together using an interlayer when broken
D) To eliminate all thermal transfer
, Answer: C
Laminated glass uses an interlayer, such as PVB, to keep broken glass
fragments adhered, improving safety and security performance.
6. Which type of glass is most likely to remain in its frame after breakage
due to an interlayer?
A) Wired glass
B) Laminated glass
C) Annealed glass
D) Heat-strengthened glass
Answer: B
Laminated glass remains largely intact after breakage because its
interlayer holds fragments together, preventing them from falling
out.
7. In glazing systems, what is the primary purpose of setting blocks?
A) To support the glass weight and prevent contact with frame edges
B) To increase light transmission
C) To seal air leaks in curtain walls
D) To tint glass surfaces
Answer: A
Setting blocks are used to properly support glass panels and
distribute their weight, preventing edge damage and stress
concentration.
8. Which glass type is created by controlled cooling that is less rapid than
tempering but faster than annealing?
A) Laminated glass
B) Heat-strengthened glass
C) Float glass
D) Wired glass
Answer: B
, Heat-strengthened glass is cooled at a moderate rate, making it
stronger than annealed glass but not as strong or fragmented as
tempered glass.
9. What is a key characteristic of annealed glass?
A) It shatters into small cubes
B) It is the strongest type of architectural glass
C) It breaks into large, sharp shards
D) It cannot be cut after production
Answer: C
Annealed glass is standard untreated glass that breaks into large,
sharp pieces, making it less safe compared to tempered or laminated
glass.
10. Which factor most influences wind load calculations for glazing
systems?
A) Glass color
B) Building height and exposure
C) Glass thickness alone
D) Interior lighting design
Answer: B
Wind load calculations depend heavily on building height, location,
and exposure conditions, which determine pressure forces acting on
glazing systems.
11. What is the primary function of low-E coatings on glass?
A) Increase glass weight
B) Reduce heat transfer through radiation
C) Strengthen glass against impact
D) Improve sound amplification
Answer: B
