There are three classifications of multiple dwelling unit buildings:
• Buildings with two dwelling units (duplexes): Each dwelling unit is modeled as an individual single family building.
• Buildings consisting of townhouse style dwelling units. These have no common ceilings or floors between dwelling units. Each dwelling unit is modeled as an individual single family building.
• Buildings consisting of three or more dwelling units that are not townhouses (R-2 occupancy group). Model as a multifamily building.