Site criteria

(a) Comply with ASCE 24-14, Flood Resistant Design and Construction, based on provisions for Risk Category III. (1) Floor slab on grade must be 1.5 feet above the base flood elevation of the county’s flood hazard map, or a higher elevation as determined by a modeling methodology that predicts the maximum envelope and depth of inundation including the combined effects of storm surge and wave actions with respect to a Category 3 hurricane, nor less than the flood elevation associated with a 500-year mean recurrence interval. (2) Locate outside of V and Coastal A flood zones unless justified by site-specific analysis or designed for vertical evacuation in accordance with a method approved by the building official. When a building within a V or Coastal A flood zone is approved, the bottom of the lowest structural framing member of any elevated first floor space must be 2 feet above the base flood elevation of the county’s flood hazard map, or at higher elevation as determined by a modeling methodology that predicts the maximum envelope and depth of inundation including the combined effects of storm surge and wave actions with respect to a Category 3 hurricane, nor less than the flood elevation associated with a 500-year mean recurrence interval. (b) Emergency vehicle access. Provide at least one route for emergency vehicle access. The portion of the emergency route within the site must be above the 100-year flood elevation. (c) Landscaping and utility laydown impact hazards. Landscaping around the building must be designed to provide standoff separation sufficient to maintain emergency vehicle access in the event of mature tree blowdown. Trees must not interfere with the functioning of overhead or underground utility lines, nor cause laydown or falling impact hazard to the building envelope or utility lines. (d) Adjacent buildings. The building must not be located within 1,000 feet of any hazardous material facilities defined by International Building Code Table 1604.5. Unanchored light-framed portable structures must not be permitted within 300 feet of the building, unless the windborne debris hazard of the portable structure uplift is mitigated.