A. Main buildings, situated east of the UTA TRAX light rail lines or fronting principal streets, shall have ground floors with a minimum ceiling height of twelve feet (12') measured from floor deck to floor deck. For purposes of this section, main buildings shall not include townhouses.
B. Multi-story buildings designed for nonresidential uses on the ground floor shall have walls, partitions and floor/ceiling assemblies separating dwelling units from other spaces with a sound transmission classification (STC) of at least fifty (50) for airborne noise.
C. Commercial uses shall occupy the width of the ground floor of multi-story residential buildings facing a principal street as defined in section 17.168.040 for a minimum depth of forty feet (40'). The balance of the ground floor may be occupied by residential uses or parking.
1. Commercial uses as required do not include portions of the development used for parking, storage, maintenance, or other accessory uses provided for the residential component of the development.
2. Leasing offices and lobbies allowing access to the upper residential floors may occupy no more than fifteen percent (15%) of the ground floor or up to one thousand eight hundred (1,800) square feet, whichever is less.
3. Live/work units fill the requirement for ground floor commercial uses subject to the following considerations.
a. Excluding private, attached garage space, the entire ground floor of the live/work unit must be designed, constructed, and used as commercial space.
b. Commercial spaces within the live/work unit that are used to satisfy the minimum commercial square footage or frontage requirements of this chapter may not be used for residential parking or storage.
c. The live/work unit's first story height must be a minimum of twelve feet (12').
d. Parking provided for the live/work units must meet both the residential and commercial parking requirements of this chapter.
e. For developments on a parcel or combination of parcels greater than two (2) acres, live/work units may comprise no more than ten percent (10%) of the required commercial space.
D. West of Main Street, the portion of the ground floor of any building devoted to the sale of retail goods shall not exceed fifty thousand (50,000) square feet. (Ord. 21-21: Ord. 15-07)