Postsecondary Education

NCES 2006-160
May 2006

3.2.8 Structural Area

(See figure 3-7)

  1. Definition. The sum of all areas on all floors of a building that cannot be occupied or put to use because of structural building features.
  2. Basis for Measurement. Precise computation by direct measurement is not possible under this definition. It is determined by calculating the difference between the measured gross area and the measured net usable area.

    Measured in terms of area,

    Structural Area = gross area - Net Usable Area

  3. Description. Examples of building features normally classified as Structural Areas include exterior walls, fire walls, permanent partitions, unusable areas in attics or basements, or comparable portions of a building with ceiling height restrictions.

Figure 3-7. Structural Area of a building by floor

Figure 3-7. Structural Area of a building by floor

NOTE: Structural Areas are indicated in solid black.