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CSLB C-17 Glazing (Trade Exam) Exam Cheat Sheet (2026)
A free, printable CSLB C-17 Glazing (Trade Exam) exam cheat sheet: the 30 highest-yield points to know, grouped into 5 sections that follow the exam's content areas, each section with its published weight.
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- 30 of the 30 points carry a citation to the rule they come from.
- The real CSLB C-17 Glazing (Trade Exam) exam: 210 minutes.
- Prints from your browser (Ctrl-P, or Cmd-P on a Mac) — the navigation, buttons and links drop out of the printed copy.
- 260 free CSLB C-17 Glazing (Trade Exam) practice questions on the same material, every one explained.
- Last updated: November 2026.
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Practice stays free. The full CSLB C-17 Glazing study guide is the material itself, taught start to finish — a downloadable PDF + EPUB you keep.
Planning and Estimating
27% of the exam- Surface numbers
- Count glass surfaces from the exterior inward; a low-e coating on surface 2 is the air-space face of the outer lite.· Guardian IGU brochure
- Check the code
- Each glass mark is checked against the hazardous-location rules; a specification silent on safety glazing does not excuse the glazier.· 2025 CBC §2406.4
- Square feet
- Width x height in inches, divided by 144, gives square feet.· Area arithmetic
- Glass weight
- Glass weighs about 13 pounds per square foot for every inch of thickness.· 2025 CBC §2404.2
- Setting blocks
- Two blocks at the quarter points; 0.1 inch per square foot, never under 4 inches.· Manufacturer guideline (ATS-192)
- Markup and margin
- Price = cost x (1 + markup), or cost / (1 - margin).· Estimating arithmetic
Fabrication and Installation of Framing Systems
21% of the exam- Square within 1/8 inch
- Diagonals of an opening differ by no more than 1/8 inch in one manufacturer's guideline.· Pilkington ATS-192
- Deflection
- Glass-edge framing is limited to 1/175 of the edge length for edges up to 13 feet 6 inches.· 2025 CBC §2403.3
- Seal before assembly
- Sealant goes on member ends before the frame is assembled.· Manufacturer storefront checklist
- Heat-treated glass
- Drilling and notching are done before heat treatment; finished glass cannot be recut.· GANA FB45-14
- Shim then anchor
- The specification says to shim and brace the aluminum system before anchoring it.· UFGS 08 41 13
- Dissimilar materials
- Aluminum touching masonry or concrete is separated by nylon pads or a bituminous coating.· UFGS 08 41 13
Fabrication and Installation of Glazing Materials
18% of the exam- Setting blocks
- Blocks are 1/16 inch narrower than the channel and never cover a weep.· Pilkington ATS-192
- No trimming
- Insulating units are not ground, nipped or cut after they leave the factory.· UFGS 08 81 00
- Category II
- Shower and tub enclosures, patio doors and doors with a piece over 9 square feet are Category II.· 16 CFR 1201.2
- Fire windows
- Fire-protection-rated glazing may not exceed 25 percent of the area of a common wall.· 2025 CBC §716.3.2.1.2
- Joint proportion
- Joint width to backer-rod setback is 2:1, with a 3/8-inch maximum setback.· NIH sealant joint bulletin
- Mark the glass
- Employees are protected from walking through glass by barriers or conspicuous durable markings.· Title 8 §1525
Glazing Replacement and Retrofit Projects
15% of the exam- New-work rule
- The installation of replacement glass is as required for new installations.· 2025 CBC §2402.1
- Why it broke
- Partial shading, signs on the glass, chipped edges and ponded pockets are common causes in the glass makers' guidelines.· Pilkington ATS-192
- Overall thickness
- Overall thickness runs outside surface to outside surface; gap width runs inside to inside.· CEC residential compliance manual Ch. 3
- Lead renovation
- Removing windows from pre-1978 housing can require an EPA-certified firm.· 40 CFR 745
- Labels
- Windows that are not field-fabricated carry NFRC-certified or default labels.· CEC residential compliance manual Ch. 3
- Window fall protection
- Low sills high above grade need a 4-inch-sphere opening limit or a control device.· 2025 CRC §R321.2
Safety
19% of the exam- Tailgate meetings
- Supervisors hold safety meetings at least every 10 working days.· Title 8 §1509(e)
- Gloves
- Gloves are not worn where they can be caught in moving machinery.· Title 8 §3384
- Fall threshold
- Personal fall protection is required for exposure to falling in excess of 7-1/2 feet.· Title 8 §1670(a)
- Wall openings
- A wall opening with a drop over 4 feet and a bottom under 3 feet is guarded.· Title 8 §1632(j)
- Rails
- Top rail 42 to 45 inches high, withstanding 200 pounds.· Title 8 §1620
- Ladders
- Portable ladder rails extend 36 inches above the landing; the foot is one-quarter of the working length out.· Title 8 §3276
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Study aid, not a substitute for the official material — always confirm the current rule with CSLB — C-17 study guide (13E-17).