CBI Study Guide 2026
Everything you need to pass the CBI exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 CBI Exam Format at a Glance
📚 CBI Topics to Study (71)
✍️ Sample CBI Questions & Answers
1. How often should a fuel-burning furnace or boiler typically be professionally serviced?
Annual professional service checks combustion, venting, heat exchangers, and safety controls.
2. Fireblocking in concealed spaces of stud walls is required at what maximum horizontal interval?
IRC R302.11 requires fireblocking so that horizontal concealed spaces do not exceed 10 feet.
3. An IRC stairway requires a handrail on at least one side when it has how many or more risers?
IRC R311.7.8 requires a handrail on at least one side of each flight with four or more risers.
4. Impervious surfaces such as driveways and patios within 10 feet of a building should slope away at a minimum of what percentage?
IRC R401.3 requires impervious surfaces within 10 feet of the foundation to slope at least 2% away.
5. Anchor bolts must be located within what distance of each end of a sill plate section?
The IRC requires an anchor bolt within 12 inches of each end of each plate section.
6. Why can a frost-free sillcock still freeze and burst in winter?
An attached hose keeps water from draining out of the barrel, so it can freeze; hoses should be disconnected before winter.
🎯 Free CBI Practice Tests
📖 CBI Guides & Articles
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An AI chatbot can quiz you, but it can't reproduce the exam conditions or keep your record. Here you get:
- A timed, full-length CBI mock exam — 80 questions in 210 minutes with a 75% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
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- A printable CBI cheat sheet you can print or save as a PDF.
- CBI flashcards built from the same question bank.
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