[1] New Construction and substantial improvement of any commercial, industrial or other nonresidential structure shall either have the lowest floor, including basement, elevated to the level of the base flood elevation or together with the attendant utilities and sanitary facilities, shall;
[2] be require within any AO zone on the municipality's FIRM that all new Construction and substantial improvement of any commercial, industrial or other nonresidential structure shall either have the lowest floor, including basement, elevated above the highest adjacent grade at least as high as the depth number specified in feet (at least two feet if no depth number is specified). And, require adequate drainage paths around structures on slopes to guide floodwaters around and away from proposed structures; or
[3] be floodproofed so that below the base flood level the structure is watertight with walls substantially impermeable to the passage of water;
[4] have structural components capable of resisting hydrostatic and hydrodynamic loads and effects of buoyancy; and,
[5] be certified by a registered professional engineer or architect that the design and methods of construction are in accordance with accepted standards of practice for meeting the applicable provisions of this subsection. Such certification shall be provided to the official as set forth in
