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Exam Review

Key Facts: SC Glass and Glazing Exam

60 Q

Official Exam Questions

PSI SC Commercial Contractor CIB updated 5/15/2025

70%

Passing Score (42 of 60)

PSI SC Commercial Contractor CIB updated 5/15/2025

2 hours

Time Allowed

PSI SC Commercial Contractor CIB updated 5/15/2025

USD 60

PSI Exam Fee

PSI SC Commercial Contractor CIB updated 5/15/2025

Open Book

Book Policy

PSI SC Commercial Contractor CIB updated 5/15/2025

South Carolina Glass and Glazing Contractor Examination is the official CLB/PSI open-book exam: 60 questions, 70% (42 of 60), 2 hours, USD 60 (bulletin updated 5/15/2025). Official delivery is English.

Sample SC Glass and Glazing Practice Questions

Try these sample questions to review concepts for the SC Glass and Glazing exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1In architectural glazing, what does bite mean?
A.The depth of the glass edge captured in the frame rabbet, gasket pocket, or structural sealant
B.The air space between the two lites of an insulating glass unit
C.The gap between the glass edge and the bottom of the rabbet
D.The thickness of the weatherseal bead on the exterior glass face
Explanation: Bite is the amount of glass edge held by the frame, gasket, or structural silicone. Adequate bite keeps the lite from walking out under wind suction and helps transfer load into the framing. Edge clearance is a different dimension: the gap from the glass edge to the rabbet bottom or stop.
2A Columbia storefront lite of fully tempered glass arrives 1/2 in too wide. What is the correct field action?
A.Score and snap the lite on a cutting table the same way annealed glass is cut
B.Reject or reorder the lite; fully tempered glass cannot be cut after it is tempered
C.Grind the long edge with an abrasive blade until it fits the opening
D.Heat the edge with a torch and break off the extra 1/2 in
Explanation: Fully tempered glass is heat-treated after it is cut, seamed, and fabricated to size. Scoring, sawing, or grinding through the surface compression layer typically shatters the lite. Order the correct size from the fabricator.
3Per GANA-type glazing practice, where should the two setting blocks under a rectangular lite normally be placed?
A.Tight against each vertical jamb to lock the corners
B.Stacked at midspan so the transom sees one concentrated reaction
C.Under the head member to keep the lite from dropping
D.At the approximate quarter points of the sill, equally spaced from the glass centerline
Explanation: Two identical setting blocks are placed at the sill quarter points so dead load is shared and the horizontal member does not sag at midspan. The blocks stay equally distant from the centerline and support the lite at the sill, not at the head.
4Relative to annealed float glass of the same thickness, what are the typical design-strength multipliers used for heat-strengthened and fully tempered glass?
A.Heat-strengthened about 2 times annealed; fully tempered about 4 times annealed
B.Heat-strengthened about 4 times annealed; fully tempered about 8 times annealed
C.Heat-strengthened equal to annealed; fully tempered about 2 times annealed
D.Both heat-strengthened and fully tempered are treated as equal to annealed
Explanation: Industry practice and ASTM E1300 glass-type factors treat heat-strengthened glass as roughly twice as strong as annealed glass and fully tempered glass as roughly four times as strong. Those factors apply to uniform lateral load resistance; thermal stress, edge quality, and safety-glazing rules are separate decisions.
5What is an insulating glass unit (IGU)?
A.A single lite with a factory-applied Low-E coating on surface 1
B.Two or more lites separated by a spacer, hermetically sealed, with desiccant in the spacer
C.Laminated glass with a polyvinyl butyral interlayer
D.Wired glass with an embedded welded mesh
Explanation: An IGU is a factory-sealed assembly of two or more lites with a spacer, primary and secondary edge seals, and desiccant to keep the cavity dry. The cavity may be air or argon. Laminated glass and wired glass are different products.
6How should crates of architectural flat glass typically be stored on a South Carolina jobsite before installation?
A.Flat-stacked on the slab in direct sun so dirt can be washed off
B.Leaning loose against a wall at a steep angle with no edge protection
C.Near vertical on A-frames or stillages, blocked off the ground, with separators between lites
D.On edge in a water-filled trough to keep the glass cool
Explanation: GANA practice is to store glass near vertical on A-frames or stillages, off the ground, out of standing water, and with separators so lites do not glass-to-glass contact. Flat stacking can trap moisture and stain or break lites; loose steep leaning can tip or chip edges.
7Why is laminated glass often selected where post-breakage retention is required?
A.The polyvinyl butyral or ionoplast interlayer holds fragments together after the glass breaks
B.Laminated glass cannot break under any wind load
C.The interlayer makes the glass four times as strong as fully tempered glass
D.Laminated glass is the only product that can be labeled as safety glazing
Explanation: Laminated glass is two or more plies bonded with a plastic interlayer. After breakage the interlayer holds most fragments, which is why it is used for overhead glazing, security, and many glass guards. It is not unbreakable, and fully tempered glass can also qualify as safety glazing.
8Why are ceramic-enamel spandrel lites usually specified as heat-strengthened or fully tempered rather than annealed?
A.Annealed glass cannot receive a ceramic frit
B.The dark coating absorbs solar heat and creates thermal stress that annealed glass is more likely to fail under
C.Spandrel glass is always a hazardous location under IBC 2406.4.1
D.Heat treatment is required so the lite can be field-cut to the opening
Explanation: Opaque ceramic frit or insulation behind a spandrel lite raises glass temperature and edge-stress. Heat-strengthened glass is the usual choice because it resists thermal breakage better than annealed glass and is less prone to spontaneous breakage than fully tempered glass. Heat treatment does not allow field cutting.
9Why must weep holes in a wet-glazed or insulating-glass pocket remain open after setting blocks and sealant are installed?
A.To pressurize the IGU cavity and keep the desiccant dry
B.To provide indoor ventilation for the occupied room
C.To drain water that enters the glazing pocket to the exterior
D.To lock the setting blocks so they cannot move to the quarter points
Explanation: Glazing pockets are expected to take in some water. Weeps, kept clear of sealant and blocks, drain that water to the exterior before it sits on the IGU edge or corrodes the frame. Setting blocks should be shaped or placed so they do not dam the sill.
10What is the primary purpose of a Low-E coating on architectural glass?
A.To make annealed glass qualify as safety glazing without tempering
B.To reflect a large share of long-wave infrared energy and improve the U-factor and solar control
C.To replace the desiccant inside an insulating-glass spacer
D.To increase the glass bite required by the GANA pocket chart
Explanation: Low-emissivity coatings reflect long-wave infrared, which lowers heat flow (better U-factor) and can reduce solar heat gain depending on coating type and surface. They do not create safety glazing and do not change bite rules.

About the SC Glass and Glazing Exam

The South Carolina Glass and Glazing Contractor Examination is the official CLB classification examination administered by PSI. The official exam has 60 scored questions. Passing is 70% (42 of 60) in 2 hours. The examination is open book. PSI lists USD 60 (South Carolina Commercial Contractor Candidate Information Bulletin updated 5/15/2025). The content outline allows 2 hours. All commercial general and mechanical contractor candidates must pass the Business Management and Law for Commercial Contractor Examination in addition to this technical examination. LLR charges a separate USD 350 license application fee. This bank is an English-language MCQ study adaptation. It does not replace required trade experience, board approval, financial statements or bonds, or the official examination.

Exam sponsor: PSI Services LLC (for the South Carolina Contractor's Licensing Board). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Open-book computer-based multiple-choice. Allowed references are listed in the South Carolina Commercial Contractor Candidate Information Bulletin updated 5/15/2025. Note: that bulletin is internally inconsistent on seat time for this classification — the Glass and Glazing content outline states 2 hours, while the Examination Fees schedule on page 1 lists Glass & Glazing as 3 hours. Confirm the time on your PSI registration confirmation.

Time Limit

2 hours

Passing Score

70% (42 of 60)

Exam / Certification Fees

USD 60

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

50%

General Glazing and Glass Systems

General Glazing and Glass Systems (30 items)

7%

Metal Framing

Metal Framing (4 items)

7%

Installation Methods, Tools, and Equipment

Installation Methods, Tools, and Equipment (4 items)

6%

Sealant Installations

Sealant Installations (4 items)

10%

Safety

Safety (6 items)

20%

Code Requirements

Code Requirements (12 items)

Preparing for the SC Glass and Glazing Exam

What You Need to Know

  • Passing score: 70% (42 of 60)
  • Assessment: Open-book computer-based multiple-choice. Allowed references are listed in the South Carolina Commercial Contractor Candidate Information Bulletin updated 5/15/2025. Note: that bulletin is internally inconsistent on seat time for this classification — the Glass and Glazing content outline states 2 hours, while the Examination Fees schedule on page 1 lists Glass & Glazing as 3 hours. Confirm the time on your PSI registration confirmation.
  • Time limit: 2 hours
  • Exam / certification fees: USD 60 Official sources

Using Our Practice Resources

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SC Glass and Glazing: Suggested Study Strategy

1Distribute study time to the official PSI content outline (bulletin updated 5/15/2025)
2Use only the PSI-listed references for this classification
3Temporary tabs such as Post-it notes are prohibited in the PSI center
4This bank is an English-language MCQ study aid, not an official PSI form

Frequently Asked Questions

How many questions are on the South Carolina Glass and Glazing Contractor Examination?

The official PSI examination has 60 scored questions. Passing is 70% (42 of 60) within 2 hours (South Carolina Commercial Contractor Candidate Information Bulletin updated 5/15/2025).

How much does the SC Glass and Glazing exam cost?

PSI lists USD 60 for this examination. The South Carolina Contractor's Licensing Board charges a separate USD 350 license application fee.

Is the SC Glass and Glazing exam open book?

Yes. PSI lists the commercial contractor examinations as open book. Candidates may bring the PSI-listed references for this classification. Temporary tabs such as Post-it notes are prohibited.

How long is the SC glass and glazing examination?

The Glass and Glazing content outline allows 2 hours for 60 questions, but the Examination Fees schedule on page 1 of the same PSI bulletin lists Glass & Glazing as 3 hours. The bulletin conflicts with itself, so confirm the seat time on your PSI registration confirmation. PSI lists USD 60 and passing is 70% (42 of 60).