(A) In all SFHAs, the new construction or substantial improvement of any commercial, industrial or nonresidential structure or manufactured home shall either have the lowest floor, including the basement, elevated to or above the FPG, two feet above the base flood elevation, or be floodproofed to or above the FPG. Should solid foundation perimeter walls be used to elevate a structure, then openings sufficient to facilitate the unimpeded movement of floodwaters shall be provided in accordance with the standards of § 153.39 of this chapter.
(B) Structures located in all A Zones may be floodproofed in lieu of being elevated if done in accordance with the following.
(1) A registered professional engineer or architect shall certify that the structure has been designed so that below the FPG, the structure and attendant utility facilities are watertight and capable of resisting the effects of the regulatory flood. The structural design shall take into account flood velocities, duration, rate of rise, hydrostatic pressures and impacts from debris or ice. Such certification shall be provided to the official as set forth in § 153.07(B)(2)(l) of this chapter.
(2) Floodproofing measures shall be operable without human intervention and without an outside source of electricity.
(Ord. 2014-05, passed 5-5-2014) Penalty, see § 10.99