“Floor area,” in the case of offices, merchandising or service types of uses, means the gross floor area used or intended to be used by tenants, and including floor area for service to the public as customers, patrons, clients or patients, including areas occupied by fixtures and equipment used for display or sales of merchandise. (Ord. 3153 § 2 (Exh. A), 2010; Ord. 1212 § 1, 1969; prior code § 33.801(C)).