Laserfiche WebLink
(B) Residential Construction. New construction or substantial improvement of any <br />residential structure (or manufactured home) shall have the lowest floor; <br />including basement, at or above the FPG (two feet above the base flood <br />elevation). Should solid foundation perimeter walls be used to elevate a <br />structure, openings sufficient to facilitate the unimpeded movements of <br />floodwaters shall be provided in accordance with the standards of Section (e) <br />(2) (D). <br />(C) Non-Residential Construction. New construction or substantial improvement of <br />any commercial, industrial, or non-residential structure (or manufactured home) <br />shall either have the lowest floor, including basement, elevated to or above the <br />FPG (two feet above the base flood elevation) or be floodproofed to or above <br />the FPG. Should solid foundation perimeter walls be used to elevate a structure, <br />openings sufficient to facilitate the unimpeded movements of floodwaters shall <br />be provided in accordance with the standards of Section (e) (2) (D). Structures <br />located in all "A Zones" may be floodproofed in lieu of being elevated if done <br />in accordance with the following: <br />i. A Registered Professional Engineer or Architect shall certify that the <br />structure has been designed so that below the FPG, the structure and <br />attendant utility facilities are watertight and capable of resisting the effects <br />of the regulatory flood. The structure design shall take into account flood <br />velocities, duration, rate of rise, hydrostatic pressures, and impacts from <br />debris or ice. Such certification shall be provided to the official as set forth <br />in Section (d) (3) (J). <br />ii. Floodproofing measures shall be operable without human intervention and <br />without an outside source of electricity. <br />(D) Elevated Structures. New construction or substantial improvements of elevated <br />structures shall have the lowest floor at or above the FPG. <br />Elevated structures with fully enclosed areas formed by foundation and other <br />exterior walls below the flood protection grade (crawlspaces or under floor <br />spaces) shall be designed to preclude finished living space and designed to <br />allow for the entry and exit of floodwaters to automatically equalize hydrostatic <br />flood forces on exterior walls. Designs for complying with this requirement <br />must either be certified by a professional engineer or architect or meet the <br />following minimum criteria: <br />i. provide a minimum of two openings (having a total net area of not less than <br />one square inch for every one square foot of enclosed area; and <br />ii. all openings shall be located entirely below the BFE; and <br />Page 22 of 31 <br />