The following standards apply in all areas of special flood hazard including those where base flood elevation data have been provided. Where a structure, including its foundation members, is elevated on fill to or above the base flood level, the requirements for division (A), Anchoring, and division (B), Construction Materials and Methods, are satisfied.
(A) Anchoring.
(1) All new construction and substantial improvements shall be anchored to prevent flotation, collapse or lateral movement of the structure resulting from hydrodynamic and hydrostatic loads, including the effects of buoyancy.
(2) All manufactured homes, not otherwise regulated under the Ohio Revised Code pertaining to manufactured home parks, shall be anchored to prevent flotation, collapse or lateral movement of the structure resulting from hydrodynamic and hydrostatic loads, including the effects of buoyancy. Methods of anchoring may include, but are not limited to, use of over-the-top or frame ties to ground anchors.
(B) Construction materials and methods.
(1) All new construction and substantial improvements shall be constructed with materials resistant to flood damage.
(2) All new construction and substantial improvements shall be constructed using methods and practices that minimize flood damage.
(C) Utilities. The following standards apply to all water supply, sanitary sewerage and waste disposal systems not otherwise regulated by state or local law:
(1) All new and replacement water supply systems shall be designed to minimize or eliminate infiltration of flood waters into the systems;
(2) New and replacement sanitary sewerage systems shall be designed to minimize or eliminate infiltration of flood waters into the systems and discharge from the systems into flood waters; and
(3) On site waste disposal systems shall be located to avoid impairment to them or contamination from them during flooding.
(D) Subdivision proposals.
(1) All subdivision proposals, including manufactured home subdivisions, shall be consistent with the need to minimize flood damage;
(2) All subdivision proposals, including manufactured home subdivisions, 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, including manufactured home subdivisions, shall have adequate drainage provided to reduce exposure to flood damage; and
(4) All subdivision proposals, including manufactured home subdivisions, shall meet the specific standards of § 153.056(F), Subdivisions and Large Developments.
(E) Standards in areas of special flood hazard without base flood elevation data. In all areas of special flood hazard identified as Zone A on the Flood Insurance Rate Map where base flood elevation data are not available from any source, including § 153.021, the following provision shall apply: new construction and substantial improvement of any residential (including manufactured homes), commercial, industrial or other nonresidential structure shall have the lowest floor, including basement, elevated to the flood of record or at least two feet above the highest adjacent natural grade, whichever is greater.
(Prior Code, § 1233.01)