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For inspectors sitting the ICC B2 Commercial Building Inspector exam

ICC B2 course and practice exams

Open book, on the clock: 80 questions in 3 1/2 hours across the seven B2 outline areas.

Practice “Means of egress and opening protectives” in the courseYou read the free sample for this module. The course has the full lesson and its practice questions, one at a time with the explanation after each answer.

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Ask Plumb about this course AI

Tap a question, or type your own. With B2 course: up to 40 messages a day.

    Answers come from this course's own plans and contents.

    • 8 modules of lessons, each with a short check
    • 3 timed exams at real length: 80 questions, 210 minutes
    • 100 flashcards with spaced review

    Lifetime access, including your retake

    Not ready? Try the free 10-question check

    Other options

    Have my manager pay instead

    Your manager pays with a company card. You get the plan.

    Buying for a team, or need an invoice or purchase order? Email us at hello@raftertie.com.

    Everything in B2 course

    Learn each B2 outline area, then prove it on timed practice exams.

    One payment. Lifetime access.
    • 8 lesson modules covering every task in ICC's B2 outline
    • A week-by-week study plan built from your free check and exam date
    • 298 original questions, each explained with the reference it uses
    • 3 full-length timed exams (80 questions, 210 minutes), weighted like the real exam
    • After each timed exam, see how each domain moved since your last one
    • Domain scores after every drill show what to study next
    • Exam-day checklist: what to bring, allowed references and the calculator rules
    • Today's 10: ten a day, and every miss comes back until you get it right
    • Listen to Today's 10 on the go
    • Readiness by domain, from your own practice results
    • Every question, reshuffled into new sets aimed at your weakest domain
    • Flashcards for every domain, with spaced review
    • Plumb, your AI study assistant

    Best if: You want a structured path to the B2 exam.

    What's covered

    • Plans, permits and classifying a commercial building (Exam outline topics B2.1.1 to B2.1.3, B2.2.2 to B2.2.4)
    • Rated construction, accessibility and site safety (Exam outline topics B2.2.1, B2.2.5 to B2.2.8)
    • Footings, foundations and floor systems (Exam outline topics B2.3.1 to B2.3.4, B2.4.1)
    • Slabs, wood and steel walls (Exam outline topics B2.4.2, B2.5.1, B2.5.2, B2.5.5)
    • Masonry and concrete walls, wall coverings and chimneys (Exam outline topics B2.5.3, B2.5.4, B2.5.6, B2.7.9)
    • Means of egress and opening protectives (Exam outline topics B2.7.1, B2.7.6)
    • Fire protection, smoke control and interior finishes (Exam outline topics B2.7.2 to B2.7.4)
    • Roof and ceiling assemblies, glazing and special construction (Exam outline topics B2.6.1, B2.6.2, B2.7.5, B2.7.7, B2.7.8)

    See every lesson topic

    In B2 course

    • 298original questions
    • 3timed exams at real length
    • 8modules of lessons
    • 100flashcards

    See how Plumb answers

    Finding things fast in an open-book exam

    In an open-book exam, which habit saves the most time on each lookup?

    1. Reading every chapter in full first
    2. Knowing the chapter order and starting from the indexYour answer, right
    3. Guessing first and checking later
    4. Starting from page one each time

    You: I know the material, but I run out of time looking things up. What should I change?

    Plumb: Learn where things live, not every word. Know the chapter order, start from the index with the plainest word for the topic, and tab the chapters you open most where the exam rules allow it.

    Key point: Know where to look and you save minutes on every lookup.

    An original example, not an exam question. AI can be wrong, so check it against your course.

    What members get

    With the course.

    • Today's 10 on the course home: ten questions picked from your missed questions and your weakest domainToday's 10 10 questions a day from your misses and your weakest domain, so what you got wrong comes back. Plus a missed set of up to 50.
    • The week card's Add my study plan to my calendar button and the full week-by-week planA plan to your exam date Set your date and get a week-by-week plan you can add to your calendar in one tap.
    • The readiness bar against its study target markerReadiness by domain Your practice results against a 75% study target, and how they moved this week. A study target, not a pass prediction.
    • Timed exams on the real clock. A live pace line, and Save and exit when you need a break. You pick up with the time you had left.
    • Where your time went. After an open-book timed exam, your slowest questions become a practice set.
    • An exam-day guide. What to bring, the references you may use and the calculator rules.

    See your dashboard first

    Starter dashboard. Day 1 and the parts marked open are free.

    Free. Your dashboard opens as soon as you save.

    • 298 original questions, every one explained. Review every miss after each timed exam. Practice sets show you the ones you haven't seen first.
    • Wrong answer key? We fix it within 2 business days and log it publicly.
    • One payment. No subscription, nothing renews.
    • Didn't pass? Every plan except the 7-day pass has lifetime access. Your retake prep is already paid for.

    Practice drawn to the ICC B2 outline: every domain at its exam weight

    • General Administration6%
    • Building Planning20%
    • Footings and Foundations8%
    • Floor Construction8%
    • Wall Construction and Coverings21%
    • Roof/Ceiling Construction6%
    • Public Safety and Special Construction31%
    See the numbers

    Each domain's weight on the ICC B2 outline, as our timed exams draw it, beside its share of the 298-question bank.

    DomainOutlineBank
    General Administration6%6%
    Building Planning20%20%
    Footings and Foundations8%8%
    Floor Construction8%8%
    Wall Construction and Coverings21%21%
    Roof/Ceiling Construction6%6%
    Public Safety and Special Construction31%31%

    Instant access. Everything in the plan you choose opens as soon as checkout completes.

    See the teaching before you buyRead a complete lesson from the course, “Means of egress and opening protectives”, and try a short practice set with full explanations. Free, no signup.

    Read the free lesson

    What the course covers

    8 modules, mapped to the task numbers in International Code Council's published B2 content outline.

    1. Plans, permits and classifying a commercial building (Exam outline topics B2.1.1 to B2.1.3, B2.2.2 to B2.2.4)
      Permits, approvals and special inspections · Reading commercial plans · Building location, floor area and room openings · Occupancy classification and construction type
    2. Rated construction, accessibility and site safety (Exam outline topics B2.2.1, B2.2.5 to B2.2.8)
      Fire-resistance-rated assemblies and their tested designs · Safeguards during construction · Accessible routes and elements · Material quality and interior coverings
    3. Footings, foundations and floor systems (Exam outline topics B2.3.1 to B2.3.4, B2.4.1)
      Footings and stepped footings · Piles, piers and special foundations · Foundation walls · Floor framing systems
    4. Slabs, wood and steel walls (Exam outline topics B2.4.2, B2.5.1, B2.5.2, B2.5.5)
      Concrete slabs · Wood wall framing · Steel wall framing · Wall reinforcement
    5. Masonry and concrete walls, wall coverings and chimneys (Exam outline topics B2.5.3, B2.5.4, B2.5.6, B2.7.9)
      Masonry wall systems · Concrete wall systems · Exterior sheathing and weather-resistant coverings · Fireplaces and chimneys
    6. Means of egress and opening protectives (Exam outline topics B2.7.1, B2.7.6)
      Occupant load and egress capacity · Exit access, exits and exit discharge · Stairs, ramps, guards and handrails · Opening protectives, penetrations and joint systems
    7. Fire protection, smoke control and interior finishes (Exam outline topics B2.7.2 to B2.7.4)
      Fire protection systems on site · Smoke and fire venting and control · Interior finishes and insulation
    8. Roof and ceiling assemblies, glazing and special construction (Exam outline topics B2.6.1, B2.6.2, B2.7.5, B2.7.7, B2.7.8)
      Roof and ceiling assemblies · Roof sheathing and coverings · Safety glazing and glass · Miscellaneous construction, building services and special construction

    Questions

    When do I get access?

    Straight away. Checkout takes you to your course, and the receipt email has the same link.

    How do I get back into my course?

    Use the link in your receipt email. If you can't find it, enter your email on the course page and we resend it to the address on your order.

    Is 298 questions enough?

    Each one comes with a worked explanation and its reference. You also get 24 end-of-module checks. Today's 10 and your missed set bring your misses back on later days, so you work the bank instead of reading it once.

    Can I get a refund?

    Eligibility depends on your plan, when you request a refund and your paid use. See the refund terms for the conditions and exceptions.

    What if I need a retest?

    Keep studying in the same course. Your access has no end date, so your retake prep is already paid for, and your practice history, missed questions and readiness by domain are still there. The 7-day pass is the exception: it ends after 7 days.

    How long do I keep access?

    Lifetime access: your access has no end date. Updates are included, so if International Code Council moves this exam to a newer code edition while you have access, your course moves with it. The 7-day pass is the exception. 7-day pass: access ends 7 days after payment, to the minute. It does not renew and is not a subscription. A timed practice exam started before then can still be finished.

    More questions (6)
    If I buy the 7-day pass now, is its price taken off a bigger plan later?

    No. Each plan is a separate purchase at its listed price, and the $29 paid for the 7-day pass is not credited toward another plan. With more than a week before your exam, a full plan is the better buy.

    Are the questions copied from the exam?

    No. Every question is original and written to International Code Council's published content outline. Exam content is confidential and we never use it. We are not affiliated with or endorsed by International Code Council.

    How are the questions written?

    In our own words, to ICC's current published outline. See how many questions cover each domain.

    Can my employer pay?

    Yes. Pay at checkout and we email a receipt you can expense, or download a reimbursement request to send your manager.

    Is Plumb AI?

    Yes. Plumb is an AI study assistant, not a person or an instructor. Check important details against your lessons and references.

    Can you promise I will pass?

    No, and nobody honest can. We promise everything listed in your plan, and a fix within 2 business days for any wrong answer key.

    Employer paying?

    Many employers fund ICC B2 prep. Generate a reimbursement request PDF to send to your manager. Buying for a crew? Request a quote