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2012 B1 Exam Prep Manual: Residential Building Inspector

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2012 B1 Exam Prep Manual: Residential Building Inspector

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ISBN: 978-0-9833611-4-5

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Book and 8 Online Practice Exams
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Study Book - 11 Chapters covering the 2012 IRC
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Access to over 400 practice questions and answers.
8 Practice Tests.
Designed Specifically for the 2012 IRC
365 days unlimited online access.

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2012 B1 Exam Prep Manual: Residential Building Inspector

This course covers everything you'll need to pass the B1 Residential Building Inspector National Certification Exam (2012 IRC Code Edition). It is a practical course that teaches a quick and easy method to navigate through the detailed IRC Code as you practice for the B1 exam. You'll learn how to locate Code sections quickly and accurately, as you must during the B1 timed exam.

Available with Book and Online Access

p>As an experienced publisher with over 40 years experience in Real Estate and Construction, this is not just practice questions and answers. It is designed to teach you how to navigate and understand the 2012 IRC to pass the B1 Building Inspector Certification.

Warning: This course is for the 2012 IRC only.


  • Book with 11 Chapters covering the IRC B1 topics.
  • 400+ practice questions
  • Answers with code references, detailed explanations, and clear illustrations and charts.
  • How to study for the exam, how to take multiple-choice exams, and how to find the specific topics covered on the B1 exam.
  • Seven self-timed exams and a final exam with the toughest questions.
  • Free 1-year membership to online exam prep featuring all the practice tests. It automatically times and scores the practice exams and provides feedback on questions you miss.

Online portion is available for 365 days from the date of activation. If you wish to renew beyond 365 days, please email or give us a call.

Free Sample 2012 B1 Building Inspector Test Questions and Answers

1. Which of the following requires a permit?

A. interior and exterior painting

B. erecting a prefabricated accessory structure measuring 10' x 12'

C. attaching an awning to the siding above a window

D. building a fence 8-feet high

Answer D: R105.2—Permits: Work Exempt from Permits, Building (No. 2)

Permits must be obtained by the owner or authorized agent (e.g., contractor) when construction, alterations, repair, moving, demolition, or change is performed to a home.

The IRC does not list the specific types of work for which a permit is required, but instead lists the work for which a permit is not required. Everything else can be assumed to require a permit. To find the answer to the question, review the list of work that is exempt from permit requirements. These include: erecting a fence up to 7 feet high, building a detached accessory structure (e.g., a tool shed) up to 200 sq ft in area, building retaining walls up to 4 feet high, building a sidewalk or driveway, painting, papering, tiling, carpeting, installing cabinetry or countertops, installing a prefabricated above-ground pool less than 2 feet deep, installing or building swings or playground equipment, and adding window awnings supported by an external wall that do not project more than 54" from the wall or that require additional support.

Fences are exempt from permit requirements if they are 7 feet or less in height. Therefore, building an 8-foot fence will require a permit.

2. Emergency escape and rescue openings must be installed with a net clear opening height of at least:

A. 18"

B. 20"

C. 24"

D. 30"

Answer B: R310.1.3—Emergency Escape and Rescue Openings: Minimum Opening Width

Emergency Escape and Rescue Openings


3. Lag screws or bolts in deck ledgers must be staggered and placed _____ from the top or bottom of the ledger and between ______ from the ends.

A. 1" … 2" to 5"

B. 1" … 2" to 6"

C. 2" … 2" to 5"

D. 2" … 3" to 6"

Answer C: R507.2.1—Wood Floor Framing: Placement of Lag Screws or Bolts in Deck Ledgers and Band Joists

4. What is the maximum joist spacing when installing 1/2-inch water-resistant drywall on a ceiling?

A. 12 inches

B. 16 inches

C. 18 inches

D. 24 inches

Answer A: R702.3.8—Gypsum Board: Water-Resistant Gypsum Backing Board

Use of water-resistant gypsum backing board is limited by the requirements for spacing of ceiling joists. 1/2-inch thick water-resistant gypsum backing board is permitted on ceilings where framing spacing is no greater than 12 inches o.c. For 5/8-inch thick board, the spacing maximum is raised to 16 inches o.c.

5. What is the minimum height for a cricket on a chimney that is 48" wide and that runs parallel to the ridge of a 4:12 roof?

A. 4 inches

B. 6 inches

C. 8 inches

D. 10 inches

Answer C: R1003.20 and Table R1003.20—Chimney Crickets

Chimney crickets divert water from roof surfaces around the chimney, so water does not accumulate at the base of the chimney and get under the roof covering and/or over the chimney flashing. Chimneys require a cricket when the chimney side parallel to the ridge line is more than 30 inches wide, provided that the chimney does not intersect the ridge line (in which case, no cricket is needed or required).

The 48" width given in the question establishes the requirement for a cricket. To determine the height, refer to Table R1003.20, which lists the formulas for height according to roof slopes. (The lower the slope, the lower the cricket needs to be.) The height of a cricket for a chimney on a 4:12 roof must be 1/6 of the side that runs parallel to the ridge line: 48" x 1/6 = 48" ÷ 6 = 8".

Relative Height of Chimney Crickets


(Not to Scale; Flashing not Shown)