100+ Free CSLB C-17 Glazing Practice Questions

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2026 Statistics

Key Facts: CSLB C-17 Glazing Exam

27%

Planning and Estimating

CSLB Study Guide

3.5 hrs

Time Limit

PSI / CSLB

4 Yrs

Experience Req.

CSLB

$450

App Fee

CSLB

19%

Safety Focus

CSLB Study Guide

To obtain a C-17 Glazing Contractor license in California, applicants must pass a 3.5-hour, computer-delivered exam administered by PSI. It requires 4 years of recent qualifying journey-level experience and a $450 application fee. The exam covers planning and estimating, fabrication and installation of framing systems and glazing materials, retrofit projects, and safety.

Sample CSLB C-17 Glazing Practice Questions

Try these sample questions to test your CSLB C-17 Glazing exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which scale is typical for floor plans?

A.1/4" = 1'-0"

B.1/2" = 1'-0"

C.1" = 10'

D.3/4" = 1'-0"

Explanation: Architectural floor plans commonly use 1/4" = 1'-0" scale. This balances detail with sheet size.

2Where are glazing materials specified?

A.Site plans

B.Structural drawings

C.Plumbing layouts

D.Project specs

Explanation: The project specifications list glazing materials, performance grades, and finishes under the appropriate CSI division. Site plans show property boundaries and building placement, not material details. Structural drawings address loads and framing, while plumbing layouts are unrelated to glazing.

3What dictates sealant volume calculations?

A.Glass color and tint

B.Surrounding wall material

C.Interior floor type

D.Joint width and depth

Explanation: Sealant volume is calculated by multiplying joint width by depth by length, giving cubic units per foot of joint. The surrounding wall material and glass color do not affect the volume calculation, only the type of sealant selected. Floor type is irrelevant to the joint geometry.

4Total area of 100 lites of 48x60 glass?

A.1500 sq ft

B.1800 sq ft

C.2400 sq ft

D.2000 sq ft

Explanation: 4x5 = 20 sq ft. 100 x 20 = 2000.

5Check before ordering custom tempered glass?

A.Ambient temperature at site

B.Drywall color match

C.Carpet thickness at sill

D.Opening plumb and square

Explanation: Tempered glass is cut before the tempering process and cannot be resized once tempered, so field measurements must be exact. Verifying that the opening is plumb, square, and at the correct dimensions ensures the custom lite will fit. Temperature, drywall color, and carpet thickness do not affect glass sizing.

6Required for public works bids?

A.Payment bond

B.Maintenance bond

C.Performance bond

D.Bid bond

Explanation: A bid bond guarantees that the bidder will honor their proposal and enter the contract if awarded. Payment bonds and performance bonds are submitted after award to protect subcontractors and ensure completion. Maintenance bonds cover post-completion warranty periods, not the bidding phase.

7What is labor burden?

A.Physical weight of materials

B.Vehicle fuel costs

C.Profit markup percentage

D.Taxes and benefits

Explanation: Labor burden represents the mandatory employer-paid costs on top of wages, including payroll taxes, workers' compensation, and benefits. It is distinct from general overhead like vehicle costs and from profit markup, which is a separate line item. Physical weight is unrelated to labor cost calculations.

8Purpose of an estimating takeoff?

A.Freight weight

B.Safety toolbox meetings

C.Jobsite risks

D.Quantifying materials

Explanation: An estimating takeoff quantifies all materials needed for a project by counting and measuring items from the drawings, creating the basis for a bill of materials. It is not about freight weight, safety meetings, or job site risks. The takeoff is the foundation for accurate cost estimation and material ordering.

9Dictates wind load for high-rises?

A.Glass thickness and tint

B.Building occupancy class

C.Exterior finish color

D.Wind speed and exposure

Explanation: Wind load on glazing is determined by basic wind speed, the exposure category of the terrain, and building height, which together yield the design pressure. Glass thickness is then selected to resist that pressure, not the other way around. Occupancy and finish color do not directly influence wind load calculations.

10Required for high-elevation IGUs?

A.Argon gas fill

B.Low-E coating

C.Tinted glass

D.Breather tubes

Explanation: Breather or capillary tubes equalize pressure between the IGU panes when units are transported or installed at different elevations, preventing glass breakage. Argon fill and Low-E coatings improve thermal performance but do not address elevation pressure differentials. Tinted glass is a solar control feature unrelated to pressure equalization.

About the CSLB C-17 Glazing Exam

The C-17 Glazing exam tests a contractor's knowledge of planning and estimating, fabrication, framing systems, glass installation, replacement projects, and Cal/OSHA safety standards.

Assessment

Question count not published by the exam provider

Time Limit

3.5 hours

Passing Score

Disclosed at test site

Exam Fee

$450 application fee (California Contractors State License Board (CSLB))

CSLB C-17 Glazing Exam Content Outline

27%

Planning and Estimating

Covers evaluating plans and specifications, evaluating field conditions, and estimating materials, labor, and equipment.

21%

Fabrication and Installation of Framing Systems

Focuses on fabricating and installing storefronts, curtain walls, and other structural framing systems.

18%

Fabrication and Installation of Glazing Materials

Includes measuring, cutting, sealing, and installing various types of glass and glazing materials.

15%

Glazing Replacement and Retrofit Projects

Covers assessing existing systems, removing old materials, and retrofitting modern glazing solutions.

19%

Safety

Tests knowledge of Cal/OSHA regulations, safe handling of glass, fall protection, and handling hazardous materials.

How to Pass the CSLB C-17 Glazing Exam

What You Need to Know

Passing score: Disclosed at test site
Assessment: Question count not published by the exam provider
Time limit: 3.5 hours
Exam fee: $450 application fee

Keys to Passing

Work through all 100 available questions
Review every answer and explanation
Track weak areas and revisit them
Use our AI tutor for tough concepts

CSLB C-17 Glazing Study Tips from Top Performers

1Review the California Building Code (CBC) Chapter 24 regarding safety glazing requirements in hazardous locations.

2Familiarize yourself with Cal/OSHA Title 8 regulations on fall protection, scaffolding, and glass hoisting.

3Practice calculating square footage, perimeter measurements, and material yields for estimating.

4Understand the fabrication and installation tolerances for storefront and curtain wall systems.

5Study manufacturer guidelines for structural silicone glazing and proper joint sealants.

Frequently Asked Questions

What is a C-17 Glazing Contractor license?

A C-17 license allows a contractor to select, cut, assemble, and/or install all makes and kinds of glass, glass work, mirrored glass, and glass substitute materials for glazing; execute the fabrication and glazing of frames, panels, sashes and doors; and/or install these items in any structure.

How long is the C-17 exam?

The exam is 3.5 hours (210 minutes) long and is computer-delivered.

Are calculators allowed during the exam?

Yes, an on-screen calculator is provided during the computer-based test, or the test center may provide a basic calculator. Personal calculators are generally not allowed.

What is the experience requirement?

You need at least 4 years of journey-level experience in the glazing trade within the last 10 years.

How much does the application and examination cost?

The application fee is $450. There is also an initial license fee after passing.

100+ Free CSLB C-17 Glazing Practice Questions

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