Sec. 74-912, 74-913

Other

• Anchoring required

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

• Enclosure use restriction

  Fully enclosed areas below the regulatory flood protection elevation shall not be designed or used for human habitation, but shall be used solely for parking of vehicles, building access, or limited storage.

• Flood openings required

  Provide a minimum of two (2) openings on different sides of each enclosed area subject to flooding. The total net area of all openings must be at least one (1) square inch for each square foot of enclosed area.

• Flood-resistant materials

  New construction and substantial improvements shall be constructed with materials and utility equipment resistant to flood damage.

• Manufactured homeManufactured homeA dwelling built in a factory to a federal standard and transported to the site. anchoring

  Manufactured homes shall be anchored to prevent flotation, collapse, or lateral movement.

• Maximum accessoryAccessory useA secondary activity customarily incidental to the main use of the lot — a garage, a home office. structure size600 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  Accessory structures are not to exceed six hundred (600) square feet.

• Minimum lowest floor elevation1.5 ft

  New construction or substantial improvement of any residential structure (including manufactured homes) in zones A1-30, AE, AH, and A with detailed base flood elevations shall have the lowest floor, including basement, elevated to or above the base flood level plus eighteen (18) inches.

• Minimize flood damage methods

  New construction or substantial improvements shall be constructed by methods and practices that minimize flood damage.

• Nonresidential minimum elevation1.5 ft

  New construction or substantial improvement of any commercial, industrial, or nonresidential building (or manufactured home) shall have the lowest floor, including basement, elevated to or above the base flood level plus eighteen (18) inches.

• Nonresidential floodproofing elevation2 ft

  Nonresidential buildings located in all A1-30, AE, and AH zones may be floodproofed in lieu of being elevated provided that all areas of the building components below the elevation corresponding to the BFE plus two (2) feet are watertight.

• Recreational vehicle restriction

  Recreational vehicles placed on sites must either be on the site for fewer than 180 consecutive days or meet all the requirements for manufactured homes.

• Sanitary sewage protection

  New and replacement sanitary sewage systems shall be designed to minimize or eliminate infiltration of flood waters into the systems and discharges from the systems into flood waters.

• Subdivision flood damage minimization

  All subdivision proposals shall be consistent with the need to minimize flood damage.

• Waste disposal protection

  On-site waste disposal systems shall be located and constructed to avoid impairment to them or contamination from them during flooding.

• Water supply protection

  New and replacement water supply systems shall be designed to minimize or eliminate infiltration of flood waters into the system.