Determine whether you need to follow Case 2 in addition to Case 1. Case 2 applies to buildings with densely occupied spaces—defined as spaces designed for 25 or more people per 1,000 ft2 (40 ft2 or less per person). However, if these spaces add up to less

Determine whether you need to follow Case 2 in addition to Case 1. Case 2 applies to buildings with densely occupied spaces—defined as spaces designed for 25 or more people per 1,000 ft^₂ (40 ft^₂ or less per person). However, if these spaces add up to less than 5% of your total occupied square footage, you’re exempt from the Case 2 requirements. Rooms smaller than 150 ft² are also exempt and should not be included in your calculations.