Section 90-65. coastal high hazard areas (V zones).
Located within the areas of special flood hazard established in section 90-31 are areas designated as coastal high hazard areas. These areas have special flood hazards associated with wave wash, therefore, the following shall apply:
(1) All buildings or structures shall be located a minimum of 50 feet landward of the reach of the mean high tide.
(2) All buildings or structures shall be elevated so that the bottom of the lowest supporting horizontal member, excluding pilings or columns, is located a minimum of one foot above the base flood elevation level, with all space below the lowest supporting member open so as not to impede the flow of water. Open lattice work or decorative screening may be permitted for aesthetic purposes only and must be designed to wash away during abnormal wave action and in accordance with sections 90-62 through 90-65.
(3) All buildings or structures shall be anchored on pilings or columns.
(4) All pile and column foundations and structures attached thereto shall be anchored to resist flotation, collapse and lateral movement due to the effect of wind and water loads acting simultaneously on all building components. Water loading values shall equal or exceed the base flood. Wind loading values shall be in accordance with chapter 1205 of the Southern Standard Building code Congress International, Inc., Standard Building code, 1988/1989 edition, or subsequent edition then in effect.
(5) A registered professional engineer or architect shall certify that the design, specifications and plans for construction are in compliance with sections 90-62 through 90-65.
(6) There shall be no fill used as structural support. Noncompacted fill may be used around the perimeter of a building for landscaping and aesthetic purposes, provided the fill will wash out from storm surge, thereby rendering the building free of obstruction, prior to generating excessive loading forces, ramping effects or wave deflection. The building official shall approve design plans for landscaping and aesthetic fill only after the applicant has provided an analysis by an engineer, architect or soil scientist, which demonstrates that the following have been fully considered:
a. Particle composition of fill material does not have a tendency for excessive natural compaction;
b. Volume and distribution of fill will not cause wave deflection to adjacent properties; and
c. Slope of fill will not cause wave runup or ramping.
(7) There shall be no alteration of sand dunes or mangrove stands which would increase potential flood damage.
(8) Lattice work or decorative screening shall be allowed below the base flood elevation, provided it is not part of the structural support of the building and is designed to break away, under abnormally high tides or wave action, without damage to the structural integrity of the building on which it is to be used and provided the following design specifications are met:
a. No solid walls shall be allowed; and
b. Material shall consist of lattice or mesh screening only.
(9) If aesthetic lattice work or screening is utilized, such enclosed space shall not be designed to be used for human habitation, but shall be designed to be used only for parking of vehicles, building access or limited storage of maintenance equipment used in connection with the premises.
(10) Prior to construction, plans for any structures that will have lattice work or decorative screening must be submitted to the building official for approval.
(11) Any alteration, repair, reconstruction or improvement to a structure shall not enclose the space below the lowest floor except with lattice work or decorative screening, as provided for in sections 90-62 through 90-65.
(12) Prohibit the placement of manufactured homes (mobile homes), except in an existing manufactured home (mobile home) park or subdivision. A replacement manufactured home may be placed on a lot in an existing manufactured home park or subdivision, provided the anchoring standards of section 90-61, and the elevation standards of sections 90-62 through 90-65 are met.