Description. Included should be space subdivisions of the 10
assignable major space use categories and the 3 nonassignable space categories.
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.