New construction and substantial improvement of any commercial, industrial, or other non-residential structure shall have the reference level, including basement, elevated no lower than the regulatory flood protection elevation, as defined in § 151.05 of this chapter. Structures located in A, AO, AE and A99 Zones may be floodproofed to the regulatory flood protection elevation in lieu of elevation provided that all areas of the structure, together with attendant utility and sanitary facilities, below the required flood protection elevation are watertight with walls substantially impermeable to the passage of water, using structural components having the capability of resisting hydrostatic and hydrodynamic loads and the effect of buoyancy. For AO Zones, the floodproofing elevation shall be in accordance with § 151.36(B). A registered professional engineer or architect shall certify that the standards of this section are satisfied. Such certification shall be provided to the Floodplain Administrator or Chief Building Inspector as set forth in § 151.21(3), along with the operational, inspection, and maintenance plans.
(Ord. 2018-24, passed 5-21-18)