I don't know if this is how the unamended code reads, but here is an amendment that might get you (him) there.....See exception 2....(Amd) 507.2 Sprinklered, one story. The area of a one-story, Group A-4, B, F, M or S building of other than Type V construction shall not be limited when the building is provided with an automatic sprinkler system throughout in accordance with Section 903.3.1.1, and is surrounded and adjoined by public ways or yards not less than 60 feet in width.
Exceptions:
1. Buildings and structures of Type I and Type II construction for rack storage facilities which do not have access by the public shall not be limited in height provided that such buildings conform to the requirements of this code and NFPA 13-02.
2. In occupancies in Group A-4, the automatic sprinkler system shall not be required in areas occupied for indoor participant sports such as tennis, skating, swimming and equestrian activities, provided that exit doors directly to the outside are provided for occupants of the participant sports areas and the building is equipped throughout with a fire alarm system with manual fire alarm boxes installed in accordance with Section 907.