Indiana Glazing Contractor Local
Jurisdiction Questions And Correct
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Rationales 2026 Q&A Instant Download
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1. A curtain-wall system is designed to resist wind pressure primarily through
which load path?
A. Glass → interior finish → slab
B. Glass → sealant only → foundation
C. Glass/frame → mullions → anchors → building structure
D. Glass → ceiling grid → roof deck
Answer: C. Glass/frame → mullions → anchors → building structure
Rationale: Curtain-wall wind loads must transfer through the glazing/frame
assembly, mullions, anchors, and ultimately the building's structural system.
Sealants are not intended to serve as the primary structural load path.
2. In a conventional exterior glazing system, what is the primary purpose of
setting blocks?
A. Increase glass color
B. Transfer the glass weight to the frame and maintain proper positioning
C. Provide the only weather seal
D. Bond the glass permanently to the frame
,Answer: B. Transfer the glass weight to the frame and maintain proper
positioning
Rationale: Setting blocks support the glass, distribute its weight, prevent direct
glass-to-frame contact, and help maintain the designed edge clearances.
3. What is the greatest concern when installing annealed glass in a location
where safety glazing is required?
A. Excessive thermal insulation
B. Inadequate visual appearance
C. The glass may break into large, dangerous shards
D. The glass cannot be cleaned
Answer: C. The glass may break into large, dangerous shards
Rationale: Annealed glass can fracture into large sharp pieces. Where code
requires safety glazing, an approved safety-glazing product such as tempered or
laminated glass is generally required.
4. Which glass type is generally most appropriate when post-breakage
retention is a critical requirement?
A. Annealed glass
B. Laminated glass
C. Wired glass only
D. Heat-absorbing glass
Answer: B. Laminated glass
Rationale: Laminated glass contains an interlayer that generally holds broken
glass together after fracture, providing enhanced post-breakage retention.
5. What is a major difference between tempered and heat-strengthened
glass?
A. Tempered glass is generally stronger and designed to fracture into relatively
small particles
,B. Heat-strengthened glass cannot be used in exterior applications
C. Tempered glass is always laminated
D. Heat-strengthened glass has no residual stress
Answer: A. Tempered glass is generally stronger and designed to fracture into
relatively small particles
Rationale: Tempered glass is heat-treated to develop a high level of surface
compression and is designed to break into smaller particles. Heat-strengthened
glass has lower surface compression and generally breaks into larger pieces.
6. A glazing contractor discovers that a specified insulating glass unit is too
thick for the existing frame. What should the contractor do first?
A. Force the unit into the frame
B. Remove one lite
C. Notify the appropriate project authority and resolve the compatibility issue
before installation
D. Cut the glass on site
Answer: C. Notify the appropriate project authority and resolve the
compatibility issue before installation
Rationale: Glass thickness, unit depth, glazing bite, and frame compatibility
must be verified before installation. Field modification of an insulating glass unit
is generally unacceptable.
7. What is the primary function of an insulating glass unit spacer?
A. Hold the building together
B. Separate the glass lites and help maintain the insulating cavity
C. Replace the exterior sealant
D. Prevent all glass breakage
Answer: B. Separate the glass lites and help maintain the insulating cavity
Rationale: The spacer establishes the distance between lites and contributes to
the edge seal system that maintains the insulating cavity.
, 8. Which condition most directly threatens the performance of an insulating
glass unit?
A. Proper edge clearance
B. Failed perimeter seal
C. Correct spacer alignment
D. Proper setting blocks
Answer: B. Failed perimeter seal
Rationale: Failure of the insulating glass perimeter seal can allow moisture
penetration into the cavity, causing condensation, fogging, and degradation of
thermal performance.
9. Why are glass edges particularly important during handling?
A. Glass is strongest at its edges
B. Edge damage can initiate cracking or fracture
C. Edges cannot be cleaned
D. Edge damage only affects appearance
Answer: B. Edge damage can initiate cracking or fracture
Rationale: Chips, nicks, and impact damage at glass edges can significantly
reduce resistance to fracture and may cause delayed breakage.
10.What is the purpose of a weep system in a glazed framing assembly?
A. Increase glass weight
B. Drain incidental water from the framing system
C. Permanently seal the frame against all moisture
D. Increase interior humidity
Answer: B. Drain incidental water from the framing system
Rationale: Properly designed weeps allow water that enters the glazing or
framing system to drain to the exterior rather than accumulating within the
assembly.
Jurisdiction Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A Instant Download
1. A curtain-wall system is designed to resist wind pressure primarily through
which load path?
A. Glass → interior finish → slab
B. Glass → sealant only → foundation
C. Glass/frame → mullions → anchors → building structure
D. Glass → ceiling grid → roof deck
Answer: C. Glass/frame → mullions → anchors → building structure
Rationale: Curtain-wall wind loads must transfer through the glazing/frame
assembly, mullions, anchors, and ultimately the building's structural system.
Sealants are not intended to serve as the primary structural load path.
2. In a conventional exterior glazing system, what is the primary purpose of
setting blocks?
A. Increase glass color
B. Transfer the glass weight to the frame and maintain proper positioning
C. Provide the only weather seal
D. Bond the glass permanently to the frame
,Answer: B. Transfer the glass weight to the frame and maintain proper
positioning
Rationale: Setting blocks support the glass, distribute its weight, prevent direct
glass-to-frame contact, and help maintain the designed edge clearances.
3. What is the greatest concern when installing annealed glass in a location
where safety glazing is required?
A. Excessive thermal insulation
B. Inadequate visual appearance
C. The glass may break into large, dangerous shards
D. The glass cannot be cleaned
Answer: C. The glass may break into large, dangerous shards
Rationale: Annealed glass can fracture into large sharp pieces. Where code
requires safety glazing, an approved safety-glazing product such as tempered or
laminated glass is generally required.
4. Which glass type is generally most appropriate when post-breakage
retention is a critical requirement?
A. Annealed glass
B. Laminated glass
C. Wired glass only
D. Heat-absorbing glass
Answer: B. Laminated glass
Rationale: Laminated glass contains an interlayer that generally holds broken
glass together after fracture, providing enhanced post-breakage retention.
5. What is a major difference between tempered and heat-strengthened
glass?
A. Tempered glass is generally stronger and designed to fracture into relatively
small particles
,B. Heat-strengthened glass cannot be used in exterior applications
C. Tempered glass is always laminated
D. Heat-strengthened glass has no residual stress
Answer: A. Tempered glass is generally stronger and designed to fracture into
relatively small particles
Rationale: Tempered glass is heat-treated to develop a high level of surface
compression and is designed to break into smaller particles. Heat-strengthened
glass has lower surface compression and generally breaks into larger pieces.
6. A glazing contractor discovers that a specified insulating glass unit is too
thick for the existing frame. What should the contractor do first?
A. Force the unit into the frame
B. Remove one lite
C. Notify the appropriate project authority and resolve the compatibility issue
before installation
D. Cut the glass on site
Answer: C. Notify the appropriate project authority and resolve the
compatibility issue before installation
Rationale: Glass thickness, unit depth, glazing bite, and frame compatibility
must be verified before installation. Field modification of an insulating glass unit
is generally unacceptable.
7. What is the primary function of an insulating glass unit spacer?
A. Hold the building together
B. Separate the glass lites and help maintain the insulating cavity
C. Replace the exterior sealant
D. Prevent all glass breakage
Answer: B. Separate the glass lites and help maintain the insulating cavity
Rationale: The spacer establishes the distance between lites and contributes to
the edge seal system that maintains the insulating cavity.
, 8. Which condition most directly threatens the performance of an insulating
glass unit?
A. Proper edge clearance
B. Failed perimeter seal
C. Correct spacer alignment
D. Proper setting blocks
Answer: B. Failed perimeter seal
Rationale: Failure of the insulating glass perimeter seal can allow moisture
penetration into the cavity, causing condensation, fogging, and degradation of
thermal performance.
9. Why are glass edges particularly important during handling?
A. Glass is strongest at its edges
B. Edge damage can initiate cracking or fracture
C. Edges cannot be cleaned
D. Edge damage only affects appearance
Answer: B. Edge damage can initiate cracking or fracture
Rationale: Chips, nicks, and impact damage at glass edges can significantly
reduce resistance to fracture and may cause delayed breakage.
10.What is the purpose of a weep system in a glazed framing assembly?
A. Increase glass weight
B. Drain incidental water from the framing system
C. Permanently seal the frame against all moisture
D. Increase interior humidity
Answer: B. Drain incidental water from the framing system
Rationale: Properly designed weeps allow water that enters the glazing or
framing system to drain to the exterior rather than accumulating within the
assembly.
