For inspectors taking the ICC B2 Commercial Building Inspector exam
ICC B2: find it fast in an open-book exam
Free ICC B2 practice: 10 questions, answers explained as you go, score by domain.
Full course $99: 298 practice questions, each explained. See the course
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Building Planning
A tenant fit-out plan shows a restaurant with a bar and seating for 120 patrons, plus a kitchen. No other uses share the space. Which occupancy classification applies?
Press A-D or 1-4 to choose an answer while this question is on screen.
Choose an answer to begin
The B2 is open book, so the skill is finding it fast. Take the free 10-question check of original questions, explained as you answer, and see your weakest area.
- No signup · No card
- Written to the ICC B2 outline
- 10 questions, untimed
- Answers explained as you go
- Scored by domain
Want a timed run? Try the free 25-question mini-mock. The first 5 need no email.
Original practice material. Not affiliated with ICC.
How it works
- Answer 10 questions, freeUntimed. Check each answer to see why it's right, with a hint where one helps.
- See your score by domainBroken down by outline domain, with your weakest one named.
- Study what you missedAdd your email and exam date for a study plan, or practice at exam pace.
Want exam pace? Take the 25-question practice test (about 66 minutes)
The ICC B2 course
Available now · instant accessLearn each B2 outline area, then prove it on timed practice exams.
- 8modules of lessonsEvery task on the outline
- 3full-length timed exams80 questions in 210 minutes each
- 298practice questionsEach one explained
- 1week-by-week study planSet to your exam date
Plumb, your AI study assistant, comes with the ICC B2 course: a week-by-week plan from your exam date and weak areas, step-by-step walk-throughs and a weak-spot quiz. Up to 40 messages a day.
- My study plan: a week-by-week course from your exam date and weak areas, with today's set ready. Lose a week and I re-plan it
- Stuck on a question? Tap Walk me through it, Explain like I'm new or Show a worked example
- A quiz on your weak spots, your misses back on a spaced review, and explain it back to me to lock it in
- After 30 answers, I show you the patterns in your misses and a practice set for each one
- Exam week: a day-by-day plan for your last 7 days
See all 8 modules
- Plans, permits and classifying a commercial building
- Rated construction, accessibility and site safety
- Footings, foundations and floor systems
- Slabs, wood and steel walls
- Masonry and concrete walls, wall coverings and chimneys
- Means of egress and opening protectives
- Fire protection, smoke control and interior finishes
- Roof and ceiling assemblies, glazing and special construction
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Every answer comes with a full explanation.
AI study assistant
Ask Plumb why an answer is right
AI study assistant
Plumb AI
Plumb is your AI study assistant. Answer a question, then ask Plumb why.
Example
Why is that one wrong?
PlumbI'll show you why the right answer works, why each other option falls short, and where to look it up.
Example of how I explain. Answer question 1, then tap Ask Plumb why. 3 free asks, 10 more with your email. I'm AI, so check important details against your references. Meet Plumb
Exam at a glance
- Format
- 80 questions in 210 minutesBook: open
- Delivery
- see format.delivery (unconfirmed for B2)
What it covers
The free 10-question check follows these domains, subject to the available practice questions.
ICC B2 exam prep FAQ
How long is the free check?
The free check has 10 practice items, is untimed and takes about 26 minutes. You see the answer and explanation after each item.
What does the free check cover?
The seven areas of ICC's B2 outline, led by public safety and special construction, wall construction and building planning. You see which area to study first.
Is the check free?
Yes. You can start the check and see your score and weakest area for free, with no signup or payment. Your score in each area unlocks when you add your email.
What do I see after finishing?
You get your score, your weakest area and what the ICC B2 Commercial Building Inspector course holds for it. Add your email to see your score in each area and get a free study plan.
Where do the practice questions come from?
Every question is original and written to ICC's B2 outline. We never reproduce code text. The check does not predict your exam score or certification outcome.
How long is the ICC B2 exam?
ICC's B2 outline lists 80 multiple-choice questions in 210 minutes, open book. Our timed practice exams follow that length.
Which code year and books does it use?
ICC offers the B2 on the 2021 and 2024 International Codes, and you pick the code year. ICC's Exam Catalog lists the books allowed in the exam and the passing score, so check it before you buy references.
The Rafter Tie app for iPhone and AndroidToday's questions and your study plan in your pocket. Rafter Tie already works in your phone's browser today.
See it on your phoneMore free help
- ICC B2 exam guideFormat, domains, references and published sources in one page
- Free sample lesson
- Free flashcards
- Question of the day
- Print a class quiz (free PDF)10 practice questions with an answer key on page 2.
- Print the flashcards as cut-out cards (free PDF)The free flashcard sample, ready to cut and carry.
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Add this check to your site
Give your students or members the free 10-question ICC B2 check on your own page. Copy this HTML with its attribution link. Scores open in a new tab on Rafter Tie. Paste both lines; if your site strips scripts, the frame keeps a fixed height.