Commercial Building Inspector B2Public Safety and Special ConstructionEasy
A building inspector is reviewing the plans for a new four-story multi-tenant commercial building (Group B). The building is equipped with an automatic sprinkler system throughout. What is the minimum required fire-resistance rating for the exit access corridors in this building?
- A0 hours
- B1 hour
- C2 hours
- D1.5 hours
Show answer & explanationAnswer & explanation
Correct answer: A. 0 hours
According to IBC Table 1020.1, Group B occupancies with an automatic sprinkler system throughout are permitted to have exit access corridors with no fire-resistance rating.
Why the other options are wrong
- B. This rating is typically required for unsprinklered Group B buildings or certain other occupancies.
- C. This rating is typically for fire walls or shafts, not standard exit access corridors.
- D. This rating is not a standard corridor rating in the IBC for this occupancy type.
Corridor Fire Rating (Sprinklered B Occupancy)
In Group B occupancies equipped with an automatic sprinkler system throughout, exit access corridors are not required to have a fire-resistance rating.
- Applies to Group B occupancies.
- Requires full automatic sprinkler system.
- Referenced in IBC Table 1020.1.
Memory trick: Corridor's fire shield depends on the building's sprinkler 'B'est practice.