§ 109-62. Building standards for structures and buildings within the future-conditions floodplain.

The following provisions, in addition to those in section 109-61, shall apply:

(1)

Residential buildings.

a.

New construction. New construction of principal buildings shall not be allowed within the limits of the future-conditions floodplain unless all requirements of sections 109-53, 109-54 and 109-55 have been met. If all of the requirements of sections 109-53, 109-54 and 109-55 have been met, all new construction shall have the lowest floor, including basement, elevated no lower than three feet above the base flood elevation or one foot above the future-conditions flood elevation, whichever is higher. Should solid foundation perimeter walls be used to elevate the structure, openings sufficient to equalize the hydrologic flood forces on exterior walls and to facilitate the unimpeded movements of floodwaters shall be provided in accordance with standards of section 109-61(5).

b.

Substantial improvements. Substantial improvement of any principal structure shall have the lowest floor, including basement, elevated no lower than three feet above the base flood elevation or one foot above the future-conditions flood elevation, whichever is higher. Should solid foundation perimeter walls be used to elevate a structure, openings sufficient to equalize the hydrologic flood forces on exterior walls and to facilitate the unimpeded movements of flood waters shall be provided in accordance with standards of section 109-61(5).

(2)

Non-residential buildings.

a.

New construction. New construction of principal buildings shall not be allowed within the limits of the future-conditions floodplain unless all requirements of sections 109-53, 109-54 and 109-55 have been met. New construction that has met all of the requirements of sections 109-53, 109-54 and 109-55 may be flood-proofed in lieu of elevation. The structure, together with attendant utility and sanitary facilities, must be designed to be watertight to one foot above the base flood elevation, or at least as high as the future-conditions flood elevation, whichever is higher, with walls substantially impermeable to the passage of water and structural components having the capability of resisting hydrostatic and hydrodynamic loads and the effect of buoyancy. A registered Professional Engineer or architect shall certify that the design and methods of construction are in accordance with accepted standards of practice for meeting the provisions above, and shall provide such certification to the floodplain administrator.

b.

Substantial improvements. Substantial improvement of any principal non-residential structure located in A1—30, AE, or AH zones, may be authorized by the floodplain administrator to be flood-proofed in lieu of elevation. The structure, together with attendant utility and sanitary facilities, must be designed to be water tight to one foot above the base flood elevation, or at least as high as the future-conditions flood elevation, whichever is higher, with walls substantially impermeable to the passage of water, and structural components having the capability of resisting hydrostatic and hydrodynamic loads and the effect of buoyancy. A registered professional engineer or architect shall certify that the design and methods of construction are in accordance with accepted standards of practice for meeting the provisions above, and shall provide such certification to the floodplain administrator

(3)

Accessory structures and facilities. Accessory structures and facilities (i.e., barns, sheds, gazebos, detached garages, parking lots, recreational facilities and other similar non-habitable structures and facilities) which are permitted to be located within the limits of the floodplain shall be constructed of flood-resistant materials and designed to pass all floodwater in accordance with section 109-61(5) and be anchored to prevent flotation, collapse or lateral movement of the structure.

(4)

Standards for recreational vehicles. All recreational vehicles placed on sites must either:

a.

Be on the site for fewer than 180 consecutive days and be fully licensed and ready for highway use, (a recreational vehicle is ready for highway use if it is licensed, on its wheels or jacking system, attached to the site only by quick disconnect type utilities and security devices, and has no permanently attached structures or additions); or

b.

The recreational vehicle must meet all the requirements for residential buildings—Substantial improvements (section 109-62(1)b.), including the anchoring and elevation requirements.

(Ord. No. 309-11, § 1, 10-24-2011)