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Postsecondary Education

NCES 2006-160
May 2006

3.2.7 Net Usable Area (Net Usable Square Feet—NUSF)

  1. Definition. The sum of all areas on all floors of a building either assigned to, or available for assignment to, an occupant or specific use, or necessary for the general operation of a building.
  2. Basis for Measurement. Net Usable Area is computed by summing the Net Assignable Area and the Nonassignable Area.

    Measured in terms of Net Usable Square Feet (NUSF),

    NUSF = Assignable Area + Nonassignable Area

  3. Description. Included should be space subdivisions of the 10 assignable major space use categories and the 3 nonassignable space categories.
  4. Limitations. Deductions should not be made for necessary building columns and projections. These small areas are excluded as they represent an insignificant percentage of the total area of an average-sized space. Capturing their area would be unduly burdensome relative to the very small contribution they would make toward precision. Areas defined as structural should not be included.


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