ICC open book exam tips for the B1 inspector test

1. Do the pacing math before you start

Two hours for 60 questions is 120 minutes, or two minutes per question. Do not plan to use all of it on the first pass. A workable split is 90 minutes for a first pass at 1 minute 30 seconds each, which leaves 30 minutes for flagged questions and a final check.

Check yourself at the quarter marks. With invented numbers: at the 30-minute mark you should be around question 20, at 60 minutes around question 40. If you are at question 14 at 30 minutes, you are lookup-heavy. Speed up on the next block by guessing and flagging anything over two minutes.

2. Use a two-pass method

Pass one: answer what you know, look up what you half know, and flag anything that stalls you past two minutes. Pick your best guess, flag it and move on. Pass two: spend your reserve on flagged items, starting with the ones where you were closest.

This beats going in order and getting stuck, because every question is worth the same, and an easy one at question 55 pays as much as a hard one at question 5.

3. Decide: know it, check it or find it

For each question, decide in five seconds which type it is.

• Know it. You are sure of the rule from the job. Answer, and spend ten seconds checking the section if the stem has numbers.
• Check it. You think you know, but a dimension or exception matters. Go to the section and confirm.
• Find it. You do not know where this lives. Use the index term or chapter tab, and apply the two-minute limit.

Honest sorting saves minutes. Candidates who "check" everything burn time, and candidates who never check miss the exception that makes the answer different.

4. Read the conditions, not just the number

Most missed open-book questions are found-it-but-misread-it. Once you reach the table or section, read the conditions before the number: edition, grade or species, spacing, loading, a footnote or an exception. The span table method shows the reading order for joist, header and rafter tables.

A short worked example with invented numbers: a stem describes a floor system at 16 inches on center with a stated span, and four answer options. You find the right table fast, but the row you read is for 12 inches on center. The number looks plausible, and it is wrong. Spending ten seconds to match the spacing column first prevents that.

5. Match the stem to your edition

ICC offers the B1 on the 2021 and 2024 IRC, and your book should match your booking. Section numbers moved between editions, especially in Chapter 3. Do not rely on a number you memorized from a study aid for the other edition. Go by topic and use your own book's contents. The 2021 vs 2024 IRC guide shows what moved.

6. Set up the book so it passes the door and helps you

ICC's test-site rules allow highlighting and ink notes in bound references, and tabs must be permanently attached. Loose papers and photocopies are not allowed. Read the rules before exam week and again the night before.

Use your allowance well:

• Chapter tabs on every chapter you use.
• Section tabs only for topics where your drills run over a minute. The tab list has locations for both editions.
• Highlighted table titles for the tables you open most.

7. Use the outline weights to spend effort

Walls are 27% of the exam, public safety and special construction 17%, foundations 16%, floors 14%, roofs and ceilings 14%, planning 8% and administration 4%. That is a guide to where your tabs and practice time pay off, and it tells you where a minute of lookup speed is worth the most. The outline guide explains each area.

8. Guess smartly and never leave blanks

When a question is a lookup you cannot finish, eliminate options that contradict the situation, pick the best remaining answer and flag it. Do not spend four minutes on a single item. If you finish pass one with time left, return to those flags with fresh eyes.

One more point on mindset: the scaled passing score of 75 is not a plain percentage, so you cannot work out how many you can miss. Do not try to count it during the exam. Answer each item on its merits. The results guide explains the scoring.

How to practice these tips

Tips only stick if you rehearse them. Do two full timed sets with your tabbed book before exam day, using the quarter-mark check and the two-pass method. Build lookup speed with timed lookup drills, and see the prep checklist for the whole sequence. If you want a sense of difficulty for your background, read how hard the ICC B1 is.

Next step

Take the free 10-question check with your IRC open and the clock running. It takes minutes, needs no signup and shows exactly which topics to fix first. Then spend your drills and timed sets on your two lowest outline areas.

FAQ

Is the ICC B1 really open book?

Yes. ICC's B1 outline specifies an open-book format with 60 multiple-choice questions and a two-hour limit. The references you can bring must follow ICC's test-site rules.

Can I bring tabs and highlights into the ICC exam?

ICC's test-site rules allow highlighting and ink notes in bound references and permanently attached tabs. Loose papers and photocopies are not allowed. Read the current rules before exam day.

How much time should I spend per question?

About two minutes on average. A good plan is a first pass at around a minute and a half a question, then use the leftover time for flagged items.

Should I look up every answer on an open book exam?

No. Answer what you know, confirm items with numbers or exceptions and look up the rest. Looking up everything burns time you need for hard questions.