(A) General standards. In all areas of special flood hazard, the following provisions are required.
(1) All new construction and substantial improvements shall be anchored to prevent flotation, collapse or lateral movement of the structure.
(2) All new construction or substantial improvements shall be constructed by methods and practices that minimize flood damage.
(3) All new construction or substantial improvements shall be constructed with materials and utility equipment resistant to flood damage.
(4) All new and replacement water supply systems shall be designed to minimize or eliminate infiltration of flood waters into the system.
(5) New and replacement sanitary sewage systems shall be designed to minimize or eliminate infiltration of flood waters into the system and discharges from the systems into flood waters.
(6) On-site waste disposal systems shall be located to avoid impairment to them or contamination from them during flooding.
(B) Specific standards. In all areas of special flood hazard where base flood elevation data has been provided as set forth in division (C)(3) below or §§ 153.07(B)(7) or 153.08 of this chapter, the following provisions are required.
(1) Residential construction. New construction or substantial improvement of any residential structure shall have the lowest floor, including basement, elevated to or above the base flood elevation. A registered professional engineer, architect or land surveyor shall submit a certification to the Floodplain Administrator that the standard of this division (B)(1), as proposed in § 153.09(B)(1) of this chapter, is satisfied.
(2) Non-residential construction. New construction or substantial improvement of any commercial, industrial or other non-residential structure shall either have the lowest floor, including basement, elevated to the level of the base flood elevation or, together with attendant utility and sanitary facilities, be flood-proofed so that below the base flood level the structure is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy. A registered professional engineer or architect shall submit a certification to the Floodplain Administrator that the standards of this division (B)(2), as proposed in § 153.09(B)(3) of this chapter, are satisfied.
(3) Mobile homes.
(a) No mobile home shall be placed in a floodway, except in an existing mobile home park or existing mobile home subdivision.
(b) All mobile homes shall be anchored to resist flotation, collapse or lateral movement. Specific requirements shall be:
1. Over the top ties on each of the four corners of the mobile home, with two additional ties per side at intermediate locations, and mobile homes less than 50 feet long requiring one additional tie per side;
2. Frame ties at each corner of the home with five additional ties per side at intermediate points, and mobile homes less than 50 feet long requiring four additional ties per side;
3. All components of the anchoring system be capable of carrying a force of 4,800 pounds; and
4. Any additions to the mobile home be similarly anchored.
(C) Standards for subdivisions.
(2) All proposals for the development of subdivisions shall meet development permit requirements of this section and § 153.09 of this chapter.
(3) Base flood elevation data shall be generated for subdivision proposals and other proposed development which is greater than the lesser of 50 lots or five acres, if not otherwise provided pursuant to §§ 153.07(B)(7) or 153.08 of this chapter.
(4) All subdivision proposals shall have adequate drainage provided to reduce exposure to flood hazards.
(5) All subdivision proposals shall have public utilities and facilities such as sewer, gas, electrical and water systems located and constructed to minimize flood damage.
(Prior Code, § 10-4-10)