The capacity of the refuge area shall be computed based on a net floor area allowance of 3 square feet (0.2787 m2) for each occupant to be accommodated therein.
Exceptions: The net floor area allowable per occupant shall be as follows for the indicated occupancies:
- Six square feet (0.6 m2) per occupant for occupancies in Group I-3.
- Fifteen square feet (1.4 m2) per occupant for ambulatory occupancies in Group I-2.
- Thirty square feet (2.8 m2) per occupant for nonambulatory occupancies in Group I-2.