I have a proposed "mezzanine" that serves multiple rooms. The rooms are not open to each other but connect with common corridor. The mezzanine includes multiple enclosed rooms as well. The mezzanine is open to below at some rooms, but enclosed at others (not fully open per CBC 505.2.3 but serves the room below). The mezzanine has two means of egress.
Q1: Would it be correct to combine the areas of the multiple rooms that the mezzanine serves when determining the 1/3 area limitation?
Q2: Since the mezzanine includes multiple enclosed rooms, can it still be considered as a mezzanine or is it then considered to be a second story?