Commercial Building Inspector B2General Administration, Permits, and PlansEasy
A commercial building inspector is reviewing plans for a new 2-story Group B office building with an occupant load of 150 on the second floor. The building is equipped with an automatic sprinkler system. What is the minimum number of exits required from the second floor?
- A2
- B1
- C4
- D3
Show answer & explanationAnswer & explanation
Correct answer: A. 2
According to IBC Table 1006.2.1, for an occupant load between 1 and 500, a minimum of 2 exits are required. Since the second floor has an occupant load of 150, two exits are the minimum.
Why the other options are wrong
- B. 1 exit is only permitted for very small occupant loads (typically less than 50) or specific conditions as per IBC 1006.2.1.
- C. 4 exits are required for occupant loads exceeding 1000.
- D. 3 exits are required for occupant loads between 501 and 1000.
Minimum Number of Exits
The minimum number of exits required from a story or space is determined by its occupant load, as specified in the International Building Code (IBC). This ensures sufficient egress capacity during an emergency.
- Based on occupant load.
- Increases with higher occupant loads.
- Table 1006.2.1 is the primary reference.
Memory trick: The 'Load & Leave' rule tells you how many doors you need.