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26 <br />6. Elevated Buildings. New construction or substantial improvements of elevated buildings that <br />include fully enclosed areas that are below the regulatory flood protection elevation shall not <br />be designed to be used for human habitation, but shall be designated to be used only for <br />parking of vehicles, building access, or limited storage of maintenance equipment used in <br />connection with the premises, be constructed entirely of flood resistant materials below the <br />regulatory flood protection level in A, AO, AE, and Al -30 zones and meet the following <br />design criteria: <br />a. Measures for complying with this requirement shall be designed to automatically <br />equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of <br />floodwaters. To meet this requirement, the foundation must either be certified by a North <br />Carolina licensed Professional Engineer or Architect or meet the following minimum <br />design criteria: <br />i. Provide a minimum of two openings on different sides of each enclosed area subject <br />to flooding; <br />ii. The total net area of all openings must be at least one (1) square inch for each square <br />foot of enclosed area subject to flooding; <br />iii. If a building has more than one enclosed area, each area must have openings on <br />exterior walls to allow floodwaters to directly enter and exit; <br />iv. The bottom of all required openings shall be no higher than one (1) foot above the <br />adjacent grade; <br />v. Openings may be equipped with screens, louvers, or other opening coverings or <br />devices provided they permit the automatic flow of floodwaters in both directions; <br />and <br />vi. Foundation enclosures made of flexible vinyl or sheet metal skirting are not <br />considered enclosures for regulatory and flood insurance rating purposes, and <br />therefore, do not require openings. Masonry or wood underpinning, regardless of <br />structural status, is considered an enclosure and requires hydrostatic openings as <br />outlined above to comply with this Ordinance. <br />b. The enclosed areas shall be used solely for parking of vehicles, building access, or <br />storage. Access to the enclosed area shall be the minimum necessary to allow for parking <br />of vehicles (garage door) or limited storage of maintenance equipment used in connection <br />with the premises (standard exterior door) or entry to the living area (stairway or <br />elevator). The interior portion of such enclosed area shall not be partitioned or finished <br />into separate rooms. <br />7. Temporary structures. Prior to the issuance of a floodplain development permit for a <br />temporary structure, the following requirements shall be met: <br />