A classroom design exercise specifies outdoor air as 10 cfm per person plus 0.12 cfm per ft². For 25 people and 1,000 ft², what is the sum before any system adjustments?
- 370 cfm
- B250 cfm
- C120 cfm
- D3,000 cfm
Where to look it up
Explicit exercise assumptions; not a universal code requirement.
Why A is correct
The people component is 25 × 10 = 250 cfm; the area component is 1,000 × 0.12 = 120 cfm. Sum = 370 cfm. These are stated design inputs, not an asserted adopted-code rate.