ICC System Architecture and Design 2 — Questions and Answers
Question 1: Under the IBC, what is the minimum required fire-resistance rating for a building separation wall between two structures of different construction types when one is Type I-A and the other is Type V-B?
- 1 hour
- 2 hours
- 3 hours (Correct answer)
- 4 hours
Correct answer: 3 hours
A fire wall separating buildings of different construction types must provide a rating equal to the higher-rated construction type separation requirement, which is 3 hours for Type I-A vs. Type V-B.
Question 2: Which IBC occupancy group classification applies to a building used primarily for the storage of moderate-hazard combustible materials?
- Group S-1 (Correct answer)
- Group S-2
- Group F-1
- Group H-3
Correct answer: Group S-1
Group S-1 (Moderate-Hazard Storage) applies to buildings used for storage of combustible materials not classified as low-hazard.
Question 3: In ICC structural design, what does the term 'load path' refer to?
- The route emergency responders use during a fire
- The sequence through which loads are transferred from the roof to the foundation (Correct answer)
- The direction wind loads travel across the building envelope
- The pathway for mechanical system distribution
Correct answer: The sequence through which loads are transferred from the roof to the foundation
A load path is the continuous route through which gravity and lateral loads are transferred from the point of application down through the structural system to the foundation.
Question 4: According to the IBC, what is the maximum allowable floor area for a single-story Group B occupancy building of Type II-B construction without fire sprinklers?
- 9,500 sq ft
- 14,000 sq ft
- 19,000 sq ft (Correct answer)
- 23,000 sq ft
Correct answer: 19,000 sq ft
Per IBC Table 506.2, a single-story Group B occupancy with Type II-B construction without sprinklers has a maximum allowable area of 19,000 square feet.
Question 5: What is a 'podium' construction type as referenced in the IBC?
- A building elevated on piers above flood level
- A concrete or heavy timber base supporting lighter construction above (Correct answer)
- A structure built entirely of non-combustible materials
- A raised platform used for building egress
Correct answer: A concrete or heavy timber base supporting lighter construction above
A podium is a Type IA or IB concrete or masonry base structure upon which lighter wood-frame or other construction is built, allowing greater height and area allowances.
Question 6: In high-rise building design under the IBC, at what building height does the code trigger enhanced structural integrity and systems requirements?
- 40 feet above the lowest level of fire department vehicle access
- 55 feet above the lowest level of fire department vehicle access
- 75 feet above the lowest level of fire department vehicle access (Correct answer)
- 100 feet above the lowest level of fire department vehicle access
Correct answer: 75 feet above the lowest level of fire department vehicle access
The IBC defines a high-rise building as one with an occupied floor more than 75 feet above the lowest level of fire department vehicle access.
Question 7: Which term describes a structural system where lateral loads are resisted by diagonal steel members that form an X-pattern between columns?
- Moment frame
- Shear wall
- Braced frame (Correct answer)
- Diaphragm
Correct answer: Braced frame
A braced frame uses diagonal members (including X-bracing) between columns to resist lateral loads through axial forces rather than bending.
ICC System Architecture and Design 2
Under the IBC, what is the minimum required fire-resistance rating for a building separation wall between two structures of different construction types when one is Type I-A and the other is Type V-B?