In all areas of special flood hazards the following standards are required:

5.1-1 ANCHORING

[1] All new construction and substantial improvements shall be anchored to prevent flotation, collapse, or lateral movement of the structure.

[2] All manufactured homes shall be anchored to resist flotation, collapse or lateral movement. Methods of anchoring may include, but are not to be limited to, use of over-the-top or frame ties to ground anchors. This requirement is in addition to applicable state and local anchoring requirements for resisting wind forces.

5.1-2 CONSTRUCTION MATERIALS AND METHODS

[1] All new construction and substantial improvements shall be constructed with materials and utility equipment resistant to flood damage.

[2] All new construction and substantial improvements shall be constructed using methods and practices that minimize flood damage.

5.1-3 UTILITIES

[1] All new and replacement water supply systems shall be designed to minimize or eliminate infiltration of flood waters into the system;

[2] New and replacement sanitary sewage systems shall be designed to minimize or eliminate infiltration of flood waters into the systems and discharge from the systems into flood waters;

[3] On-site waste disposal systems shall be located to avoid impairment to them or contamination from them during flooding; and

[4] Electrical, heating, ventilation, plumbing and air-conditioning equipment and other service facilities shall be designed and/or located so as to prevent water from entering or accumulating within the components during conditions of flooding.

5.1-4 SUBDIVISION PROPOSALS

[1] All subdivision proposals shall be consistent with the need to minimize flood damage;

[2] All subdivision proposals shall have public utilities and facilities such as sewer, gas, electrical, and water systems located and constructed to minimize flood damage;

[3] All subdivision proposals shall have adequate drainage provided to reduce exposure to flood damage; and,

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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

[1] be floodproofed so that below the base flood level the structure is watertight with walls substantially impermeable to the passage of water;

[2] have structural components capable of resisting hydrostatic and hydrodynamic loads and effects of buoyancy; and,

[3] 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 SECTION 4.3-3 [2] [ii].

5.2-3 MANUFACTURED HOMES

[1] Manufactured homes shall be anchored in accordance with Section 5.1-1(2).

[2] All manufactured homes to be placed or substantially improved within an area of special flood hazard shall be elevated on a permanent foundation such that the top of the lowest floor is at or above the base flood elevation.

Coastal high hazard areas (V or VE Zones) are located within the areas of special flood hazard established in Section 3.2. These areas have special flood hazards associated with high velocity waters from tidal surges and hurricane wave wash; therefore, the following provisions shall apply:

5.3-1 LOCATION OF STRUCTURES

[1] All buildings or structures shall be located landward of the reach of the mean high tide.

[2] The placement of manufactured homes shall be prohibited, except in an existing manufactured home park or manufactured home subdivision.

5.3-2 CONSTRUCTION METHODS

[1] ELEVATION

All new construction and substantial improvements shall be elevated on piling or columns so that the bottom of the lowest horizontal structural member of the lowest floor (excluding the piling or columns) is elevated to or above the base flood level, with all space below the lowest floor's supporting member open so as not to impede the flow of water, except for breakaway walls as provided or in SECTION 5.3-2(4).

[2] STRUCTURAL SUPPORT

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Prohibit man-made alteration of sand dunes within Zones VE and V on the community's DFIRM which would increase potential flood damage.

**Webmasters Note: The previous Chapter has been added as per Ordinance No. 2009-11.