What is the term for the area that includes general circulation and other secondary spaces?

The term that describes the area which includes general circulation and other secondary spaces is known as Nonassignable Area. This portion of the area calculation typically encompasses spaces that are not assigned for specific functions but are essential for the overall functionality of a building. It includes elements such as hallways, stairwells, restrooms, mechanical rooms, and other circulation spaces that facilitate movement and access within the building.

In architectural programming and analysis, understanding the distinction between assignable areas (like offices and classrooms) and nonassignable areas is important for proper space planning and allocation within a project. Nonassignable areas are critical for ensuring that the building operates effectively, as they support the primary functions of the assigned spaces. Recognizing the role of these areas helps architects and planners design efficient layouts that accommodate both functional needs and human circulation patterns.