Connecticut Glass Installer Examination -
Practice Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationales 2027
Practice Question Bank & Answer Rationale
THIS PACK CONTAINS
150 exam-style multiple-choice questions. Each question includes the correct answer and a complete
rationale for focused revision.
COVERAGE
This practice examination prepares candidates for the Connecticut Glass Installer certification by covering
glazing systems, glass types and properties, structural silicone and sealants, building and energy codes,
OSHA safety, tools and fabrication, and Connecticut business/licensing requirements. Items emphasize
application-level code interpretation, field problem-solving, and job-site decision-making at a level consistent
with R1 university trade-technology coursework.
STUDY GUIDE
Recommended duration: 2 hours 30 minutes. Passing target: 80% (40/50 correct).
HIGHP - Page 1 of 50
,1. Under the 2021 International Building Code as adopted in Connecticut, a glass panel
used as a handrail infill in a commercial building must meet which minimum standard?
[ ] A. Single-strength annealed glass with a minimum thickness of 3/16 inch
[ ] B. Approved safety glazing per Category II or III, or a monolithic fully tempered glass panel meeting
the concentrated load requirement
[ ] C. Laminated glass with a minimum interlayer of 0.015 inch regardless of load
[ ] D. Any glazing material as long as a top rail is present
CORRECT: B. Approved safety glazing per Category II or III, or a monolithic fully tempered glass
panel meeting the concentrated load requirement
IBC Section 2407 requires handrail infill glazing to be safety glazing meeting Category II or III, or fully
tempered glass capable of resisting the specified concentrated load. Annealed glass (A) is prohibited in this
application, and interlayer thickness alone (C) does not satisfy the load path requirement. A top rail (D) does
not exempt the infill from safety glazing rules.
2. A commercial storefront is specified with 1-inch insulating glass units in a low-rise
building in Hartford. Which glazing system best accommodates thermal movement while
maintaining weathertightness?
[ ] A. Butt-glazed structural silicone with no perimeter seal
[ ] B. Dry-glazed pressure-plate system with EPDM gaskets and a drained/vented sill
[ ] C. Wet-glazed with oil-based putty in a fixed steel frame
[ ] D. Adhesive-glazed with double-sided foam tape only
CORRECT: B. Dry-glazed pressure-plate system with EPDM gaskets and a drained/vented sill
A pressure-plate system with EPDM gaskets and a drained/vented sill accommodates thermal movement
and manages water infiltration, which is essential for insulating glass in Connecticut's climate. Structural
silicone (A) is a structural, not weatherseal, system and requires careful joint design. Oil-based putty (C) is
incompatible with modern IGUs and aluminum, and foam tape alone (D) lacks structural and weather
integrity.
3. Which statement correctly describes the Connecticut requirement for a glass installer
performing work on a job exceeding $1,000 in labor and materials?
[ ] A. No license is required if working under a general contractor
[ ] B. A Home Improvement Contractor registration or New Home Construction Contractor registration is
required for residential work
[ ] C. Only a federal EPA lead-safe certification is sufficient
[ ] D. A Connecticut electrical license covers glass installation
CORRECT: B. A Home Improvement Contractor registration or New Home Construction Contractor
registration is required for residential work
Connecticut requires Home Improvement Contractor (HIC) registration or New Home Construction Contractor
HIGHP - Page 2 of 50
, registration for residential work over the statutory threshold. Working under a general contractor (A) does not
exempt the subcontractor from registration. EPA lead-safe certification (C) addresses lead paint, not
contractor licensing, and an electrical license (D) is unrelated.
4. During installation of a large lite of glass, a vacuum lifter loses suction and the panel
shifts. According to OSHA 1926 Subpart M and general industry practice, the most
appropriate immediate action is to:
[ ] A. Attempt to catch and reposition the panel by hand
[ ] B. Clear the area and lower the panel using the mechanical lifting device's secondary restraint or
controlled descent
[ ] C. Continue installation while signaling coworkers to hold the panel
[ ] D. Cut the panel free and let it drop
CORRECT: B. Clear the area and lower the panel using the mechanical lifting device's secondary
restraint or controlled descent
OSHA requires that suspended loads be controlled and that employees not be exposed to falling loads; a
secondary restraint or controlled descent protects workers. Catching the panel by hand (A) risks severe
injury, continuing installation (C) exposes workers to a falling load, and cutting it free (D) creates an
uncontrolled drop hazard.
5. A low-E coated insulating glass unit is specified for a south-facing curtain wall in
Connecticut. Which coating surface placement is correct for a double-glazed unit to
reduce solar heat gain while protecting the coating?
[ ] A. Surface 1 (outboard, exterior)
[ ] B. Surface 2 (inboard of the exterior lite)
[ ] C. Surface 3 (outboard of the interior lite)
[ ] D. Surface 4 (interior room side)
CORRECT: B. Surface 2 (inboard of the exterior lite)
Placing the low-E coating on Surface 2 keeps it within the sealed cavity, protecting it from weathering and
abrasion while reducing solar heat gain. Surface 1 (A) exposes the coating to the elements, Surface 3 (C) is
used for different solar control objectives, and Surface 4 (D) is generally used for cold-climate
heating-dominated performance, not solar gain reduction.
6. A structural silicone glazed (SSG) curtain wall joint is specified with a 1/2-inch bite and
3/8-inch thickness. Which factor is most critical in validating this design?
[ ] A. The color of the silicone
[ ] B. The calculated structural silicone bite and thickness per ASTM C1401 and the sealant
manufacturer's tested design values
[ ] C. The installer's personal preference for bead shape
HIGHP - Page 3 of 50
, [ ] D. The ambient temperature on the day of installation only
CORRECT: B. The calculated structural silicone bite and thickness per ASTM C1401 and the sealant
manufacturer's tested design values
ASTM C1401 provides the design methodology for structural silicone glazing, and the sealant manufacturer's
tested values govern the required bite and thickness. Color (A) is aesthetic, installer preference (C) is not a
design basis, and ambient temperature (D) affects cure but does not replace the structural design calculation.
7. A client reports water infiltration at the base of a storefront after a driving rain. Which
detail is most likely the cause?
[ ] A. Missing or blocked weep holes and a non-drained sill
[ ] B. Excessive glazing bite on the interior
[ ] C. Use of tempered glass instead of annealed
[ ] D. A low-E coating on Surface 2
CORRECT: A. Missing or blocked weep holes and a non-drained sill
Drained and vented sill systems rely on weep holes to evacuate water; blockage or omission causes ponding
and infiltration. Interior glazing bite (B) affects retention, not drainage, glass tempering (C) is a safety
property, and low-E placement (D) affects thermal performance, not water management.
8. Which glass type is required for a glass panel installed in a location subject to human
impact within 24 inches of a walking surface in a Connecticut commercial building?
[ ] A. Annealed glass of any thickness
[ ] B. Category I or II safety glazing meeting ANSI Z97.1 or CPSC 16 CFR 1201
[ ] C. Heat-strengthened glass without lamination
[ ] D. Wire glass in all cases
CORRECT: B. Category I or II safety glazing meeting ANSI Z97.1 or CPSC 16 CFR 1201
IBC Section 2406 requires safety glazing meeting ANSI Z97.1 or CPSC 16 CFR 1201 in hazardous locations
subject to human impact. Annealed glass (A) is prohibited, heat-strengthened glass alone (C) is not classified
as safety glazing, and wire glass (D) is limited and not universally accepted as safety glazing.
9. A contractor is preparing a bid for a commercial glazing project in Connecticut. Which
cost factor is most often overlooked when estimating structural silicone glazing?
[ ] A. The cost of glass itself
[ ] B. The labor and material for surface preparation and adhesion testing required for structural silicone
[ ] C. The cost of the building permit
[ ] D. The cost of the final cleaning
HIGHP - Page 4 of 50
Practice Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationales 2027
Practice Question Bank & Answer Rationale
THIS PACK CONTAINS
150 exam-style multiple-choice questions. Each question includes the correct answer and a complete
rationale for focused revision.
COVERAGE
This practice examination prepares candidates for the Connecticut Glass Installer certification by covering
glazing systems, glass types and properties, structural silicone and sealants, building and energy codes,
OSHA safety, tools and fabrication, and Connecticut business/licensing requirements. Items emphasize
application-level code interpretation, field problem-solving, and job-site decision-making at a level consistent
with R1 university trade-technology coursework.
STUDY GUIDE
Recommended duration: 2 hours 30 minutes. Passing target: 80% (40/50 correct).
HIGHP - Page 1 of 50
,1. Under the 2021 International Building Code as adopted in Connecticut, a glass panel
used as a handrail infill in a commercial building must meet which minimum standard?
[ ] A. Single-strength annealed glass with a minimum thickness of 3/16 inch
[ ] B. Approved safety glazing per Category II or III, or a monolithic fully tempered glass panel meeting
the concentrated load requirement
[ ] C. Laminated glass with a minimum interlayer of 0.015 inch regardless of load
[ ] D. Any glazing material as long as a top rail is present
CORRECT: B. Approved safety glazing per Category II or III, or a monolithic fully tempered glass
panel meeting the concentrated load requirement
IBC Section 2407 requires handrail infill glazing to be safety glazing meeting Category II or III, or fully
tempered glass capable of resisting the specified concentrated load. Annealed glass (A) is prohibited in this
application, and interlayer thickness alone (C) does not satisfy the load path requirement. A top rail (D) does
not exempt the infill from safety glazing rules.
2. A commercial storefront is specified with 1-inch insulating glass units in a low-rise
building in Hartford. Which glazing system best accommodates thermal movement while
maintaining weathertightness?
[ ] A. Butt-glazed structural silicone with no perimeter seal
[ ] B. Dry-glazed pressure-plate system with EPDM gaskets and a drained/vented sill
[ ] C. Wet-glazed with oil-based putty in a fixed steel frame
[ ] D. Adhesive-glazed with double-sided foam tape only
CORRECT: B. Dry-glazed pressure-plate system with EPDM gaskets and a drained/vented sill
A pressure-plate system with EPDM gaskets and a drained/vented sill accommodates thermal movement
and manages water infiltration, which is essential for insulating glass in Connecticut's climate. Structural
silicone (A) is a structural, not weatherseal, system and requires careful joint design. Oil-based putty (C) is
incompatible with modern IGUs and aluminum, and foam tape alone (D) lacks structural and weather
integrity.
3. Which statement correctly describes the Connecticut requirement for a glass installer
performing work on a job exceeding $1,000 in labor and materials?
[ ] A. No license is required if working under a general contractor
[ ] B. A Home Improvement Contractor registration or New Home Construction Contractor registration is
required for residential work
[ ] C. Only a federal EPA lead-safe certification is sufficient
[ ] D. A Connecticut electrical license covers glass installation
CORRECT: B. A Home Improvement Contractor registration or New Home Construction Contractor
registration is required for residential work
Connecticut requires Home Improvement Contractor (HIC) registration or New Home Construction Contractor
HIGHP - Page 2 of 50
, registration for residential work over the statutory threshold. Working under a general contractor (A) does not
exempt the subcontractor from registration. EPA lead-safe certification (C) addresses lead paint, not
contractor licensing, and an electrical license (D) is unrelated.
4. During installation of a large lite of glass, a vacuum lifter loses suction and the panel
shifts. According to OSHA 1926 Subpart M and general industry practice, the most
appropriate immediate action is to:
[ ] A. Attempt to catch and reposition the panel by hand
[ ] B. Clear the area and lower the panel using the mechanical lifting device's secondary restraint or
controlled descent
[ ] C. Continue installation while signaling coworkers to hold the panel
[ ] D. Cut the panel free and let it drop
CORRECT: B. Clear the area and lower the panel using the mechanical lifting device's secondary
restraint or controlled descent
OSHA requires that suspended loads be controlled and that employees not be exposed to falling loads; a
secondary restraint or controlled descent protects workers. Catching the panel by hand (A) risks severe
injury, continuing installation (C) exposes workers to a falling load, and cutting it free (D) creates an
uncontrolled drop hazard.
5. A low-E coated insulating glass unit is specified for a south-facing curtain wall in
Connecticut. Which coating surface placement is correct for a double-glazed unit to
reduce solar heat gain while protecting the coating?
[ ] A. Surface 1 (outboard, exterior)
[ ] B. Surface 2 (inboard of the exterior lite)
[ ] C. Surface 3 (outboard of the interior lite)
[ ] D. Surface 4 (interior room side)
CORRECT: B. Surface 2 (inboard of the exterior lite)
Placing the low-E coating on Surface 2 keeps it within the sealed cavity, protecting it from weathering and
abrasion while reducing solar heat gain. Surface 1 (A) exposes the coating to the elements, Surface 3 (C) is
used for different solar control objectives, and Surface 4 (D) is generally used for cold-climate
heating-dominated performance, not solar gain reduction.
6. A structural silicone glazed (SSG) curtain wall joint is specified with a 1/2-inch bite and
3/8-inch thickness. Which factor is most critical in validating this design?
[ ] A. The color of the silicone
[ ] B. The calculated structural silicone bite and thickness per ASTM C1401 and the sealant
manufacturer's tested design values
[ ] C. The installer's personal preference for bead shape
HIGHP - Page 3 of 50
, [ ] D. The ambient temperature on the day of installation only
CORRECT: B. The calculated structural silicone bite and thickness per ASTM C1401 and the sealant
manufacturer's tested design values
ASTM C1401 provides the design methodology for structural silicone glazing, and the sealant manufacturer's
tested values govern the required bite and thickness. Color (A) is aesthetic, installer preference (C) is not a
design basis, and ambient temperature (D) affects cure but does not replace the structural design calculation.
7. A client reports water infiltration at the base of a storefront after a driving rain. Which
detail is most likely the cause?
[ ] A. Missing or blocked weep holes and a non-drained sill
[ ] B. Excessive glazing bite on the interior
[ ] C. Use of tempered glass instead of annealed
[ ] D. A low-E coating on Surface 2
CORRECT: A. Missing or blocked weep holes and a non-drained sill
Drained and vented sill systems rely on weep holes to evacuate water; blockage or omission causes ponding
and infiltration. Interior glazing bite (B) affects retention, not drainage, glass tempering (C) is a safety
property, and low-E placement (D) affects thermal performance, not water management.
8. Which glass type is required for a glass panel installed in a location subject to human
impact within 24 inches of a walking surface in a Connecticut commercial building?
[ ] A. Annealed glass of any thickness
[ ] B. Category I or II safety glazing meeting ANSI Z97.1 or CPSC 16 CFR 1201
[ ] C. Heat-strengthened glass without lamination
[ ] D. Wire glass in all cases
CORRECT: B. Category I or II safety glazing meeting ANSI Z97.1 or CPSC 16 CFR 1201
IBC Section 2406 requires safety glazing meeting ANSI Z97.1 or CPSC 16 CFR 1201 in hazardous locations
subject to human impact. Annealed glass (A) is prohibited, heat-strengthened glass alone (C) is not classified
as safety glazing, and wire glass (D) is limited and not universally accepted as safety glazing.
9. A contractor is preparing a bid for a commercial glazing project in Connecticut. Which
cost factor is most often overlooked when estimating structural silicone glazing?
[ ] A. The cost of glass itself
[ ] B. The labor and material for surface preparation and adhesion testing required for structural silicone
[ ] C. The cost of the building permit
[ ] D. The cost of the final cleaning
HIGHP - Page 4 of 50
