CPI Building Codes & Regulations 2 — Questions and Answers
Question 1: Under the International Residential Code (IRC), what is the minimum ceiling height required for habitable rooms?
- 6 feet 8 inches
- 7 feet 0 inches (Correct answer)
- 7 feet 6 inches
- 8 feet 0 inches
Correct answer: 7 feet 0 inches
The IRC requires a minimum ceiling height of 7 feet for habitable rooms.
Question 2: Which code primarily governs the installation of electrical systems in one- and two-family dwellings?
- IBC
- NFPA 70 (NEC) (Correct answer)
- IRC Chapter 3
- NFPA 101
Correct answer: NFPA 70 (NEC)
NFPA 70, the National Electrical Code (NEC), governs all electrical installations including in residential dwellings.
Question 3: A homeowner adds a 200 sq ft bedroom without a permit. As an inspector, what is your primary obligation?
- Refuse to inspect the addition
- Note the unpermitted addition in the report (Correct answer)
- Approve it if it appears structurally sound
- Contact the contractor who built it
Correct answer: Note the unpermitted addition in the report
Inspectors must report unpermitted additions as a material defect requiring further evaluation by the authority having jurisdiction.
Question 4: What is the maximum rise allowed for a single stair riser under the IRC?
- 6 inches
- 7 inches
- 7.75 inches (Correct answer)
- 8.25 inches
Correct answer: 7.75 inches
The IRC limits stair riser height to a maximum of 7.75 inches.
Question 5: Which organization publishes the model codes that form the basis of the International Building Code (IBC)?
- NFPA
- ICC (Correct answer)
- ASTM
- ANSI
Correct answer: ICC
The International Code Council (ICC) publishes the IBC and other I-Codes used throughout the US.
Question 6: Under the IRC, smoke alarms must be installed in which of the following locations?
- Only in kitchens and bathrooms
- In each sleeping room, outside each sleeping area, and on each level (Correct answer)
- Only on the level containing the primary entrance
- In the garage and attic only
Correct answer: In each sleeping room, outside each sleeping area, and on each level
The IRC requires smoke alarms inside each sleeping room, outside each sleeping area, and on every level of the dwelling.
Question 7: What does the term 'AHJ' stand for in the context of building codes?
- Approved Housing Jurisdiction
- Authority Having Jurisdiction (Correct answer)
- American Housing Journal
- Assessed Home Junction
Correct answer: Authority Having Jurisdiction
AHJ stands for Authority Having Jurisdiction, the organization or official responsible for enforcing code requirements.
CPI Building Codes & Regulations 2
Under the International Residential Code (IRC), what is the minimum ceiling height required for habitable rooms?