Section 28-118.16.1. Partial certificate of occupancy

A partial certificate
  of occupancy may be issued to a specific floor or floors of an  existing
  building  erected  prior  to  January  1,  1938 subject to the following
  conditions:
    1. The building does not have and is not otherwise required to have  a
  certificate of occupancy or certificate of completion, if applicable.
    2.  The floor or floors for which a certificate of occupancy is issued
  shall not constitute more than 50 percent of the gross floor area of the
  building.
    3. The building is of noncombustible construction and  protected  with
  an automatic sprinkler system.
    4. Adequate means of egress are provided from all floors.
    5. Upon inspection, the building is deemed safe for occupancy.