I'm looking at a 4-story, R-2 condominium building. The architect has provided a rather large rooftop patio that could easily handle up to 500 occupants using a 7 sf/occ. factor for assembly use.
My concern is this, since the architect has identified this as a Type VA building, sprinklered throughout with a NFPA 13 system, the allowable height and area, including increases for both, complies with Chapter 5. However, the rooftop patio can easily be classified as a Group A-3. Table 503 limits Group A-3 to 2 stories (3 stories with sprinkler increase), but since this rooftop patio is technically not a story by definition (no roof above), then is this acceptable?
I know means of egress need to comply with Chapter 10 per Section 1004.8.