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02-14-11 Council Agenda & Packet
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02-14-11 Council Agenda & Packet
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21 -12 (e) (2) (A) In addition to the requirements of Section 21 -12 (e) (1), all structures to <br />be located in the SFHA shall be protected from flood damage below the FPG. <br />This building protection requirement applies to the following situations: <br />L Construction or placement of any new structure having a floor area greater than <br />400 square feet; or <br />21 -12 (e) (2) (B) Residential Construction. New construction or substantial improvement <br />of any 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 structure, <br />openings sufficient to facilitate the unimpeded movements of floodwaters shall be <br />provided in accordance with the standards of Section 21 -12 (e) (2) (D). <br />21 -12 (e) (2) (C) Non - Residential Construction. New construction or substantial <br />improvement of any commercial, industrial, or non - residential structure (or <br />manufactured home) shall either have the lowest floor, including basement, <br />elevated to or above the FPG (two feet above the base flood elevation) or be <br />floodproofed to or above the FPG. Should solid foundation perimeter walls be <br />used to elevate a structure, openings sufficient to facilitate the unimpeded <br />movements of floodwaters shall be provided in accordance with the standards of <br />Section 21 -12 (e) (2) (D). Structures located in all "A Zones" may be <br />floodproofed in lieu of being elevated if done 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 21 -12 (d) (3) (.1). <br />21 -12 (e) (2) (D) Elevated Structures. New construction or substantial improvements of <br />elevated 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 underfloor <br />spaces) shall be designed to preclude finished living space and designed to allow <br />for the entry and exit of floodwaters to automatically equalize hydrostatic flood <br />forces on exterior walls. Designs must either <br />be ^° fifie' by a pfefessienA ,. -hiteet meet the following <br />minimum criteria: <br />L provide a minimum of two openings located in a minimum of two exterior <br />walls (having a total net area of not less than one square inch for every one <br />square foot of enclosed area; and <br />Page 3 of 6 <br />
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