Commercial Building Inspector B2General Administration, Permits, and PlansEasy
A commercial building inspector is reviewing plans for a new 15-story Group B office building. The plans indicate that the building will have a mechanical ventilation system. What is the maximum permitted area per occupant for determining the ventilation requirements for a general office space?
- A150 square feet per occupant
- B50 square feet per occupant
- C75 square feet per occupant
- D100 square feet per occupant
Show answer & explanationAnswer & explanation
Correct answer: D. 100 square feet per occupant
The International Mechanical Code (IMC) Table 403.3.1 specifies the minimum ventilation rates. For general office spaces, the occupancy density used for calculation is 100 square feet per occupant.
Why the other options are wrong
- A. This value is incorrect for general office spaces.
- B. This value is incorrect for general office spaces.
- C. This value is incorrect for general office spaces.
Ventilation Occupancy Density (Office)
The maximum area per occupant used to determine the minimum ventilation requirements for general office spaces.
- Based on IMC Table 403.3.1.
- Essential for calculating adequate fresh air supply.
- Ensures occupant health and comfort.
Memory trick: Office air needs space, 100 per person, no trace.