NCIDQ Building Codes and Regulations 1 — Questions and Answers
Question 1: Which model building code is most widely adopted by states for commercial interior construction in the US?
- International Building Code (IBC) (Correct answer)
- NFPA 101 Life Safety Code only
- Uniform Building Code (UBC)
- Standard Building Code (SBC)
Correct answer: International Building Code (IBC)
The International Building Code (IBC), published by the International Code Council, is the most widely adopted model code for commercial construction across US states.
Question 2: Under the IBC, which occupancy classification typically applies to a general business office?
- Group B (Correct answer)
- Group A-2
- Group M
- Group S-1
Correct answer: Group B
Group B (Business) occupancy covers offices, professional services, and similar uses under IBC Chapter 3.
Question 3: What is the IBC-required minimum door width for a means of egress door serving an occupant load over 49?
- 32 inches clear (Correct answer)
- 28 inches clear
- 36 inches clear
- 30 inches clear
Correct answer: 32 inches clear
IBC requires a minimum 32-inch clear width for egress doors serving occupant loads above 49 persons.
Question 4: Which federal law is the primary accessibility standard for commercial facilities in the United States?
- Americans with Disabilities Act (ADA) (Correct answer)
- Fair Housing Act
- Rehabilitation Act Section 504
- Architectural Barriers Act
Correct answer: Americans with Disabilities Act (ADA)
The Americans with Disabilities Act (ADA) and its 2010 ADA Standards for Accessible Design govern accessibility in commercial facilities.
Question 5: What is the maximum travel distance to an exit in an unsprinklered Group B occupancy under IBC?
- 200 feet (Correct answer)
- 300 feet
- 150 feet
- 250 feet
Correct answer: 200 feet
IBC limits exit access travel distance to 200 feet in unsprinklered Group B occupancies, extendable to 300 feet when sprinklered.
Question 6: Which IBC construction type uses noncombustible materials throughout and has the highest fire-resistance ratings?
- Type I (Correct answer)
- Type II
- Type IV
- Type V
Correct answer: Type I
Type I construction (IA and IB) requires noncombustible structural elements with the highest fire-resistance ratings of all construction types.
NCIDQ Building Codes and Regulations 1
Which model building code is most widely adopted by states for commercial interior construction in the US?