When an A-3 occupancy shares a structure with one or more occupancy divisions, the structure shall be governed in one of the following manners:
- (1) Separation. When each occupancy is separated from other occupancies by fire walls, each portion thus separated shall be considered a separate building and limitations for separate buildings shall govern.
- (2) Mixed occupancy. Buildings with multiple occupancies which are not separated shall be considered mixed occupancies and shall be governed by the most restrictive limitations of the various occupancies.