(A) Residential construction. New construction or substantial improvement of any residential structure shall have the lowest floor, including basement, elevated to or above base flood elevation.
(B) Nonresidential construction. New or substantial improvement of any commercial, industrial or other nonresidential basement, elevated to the level of the base flood elevation or, together with attendant utility and sanitary facilities, be floodproofed so that below the base flood level the structure is water- tight 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 certify that the standards of this division (B) are satisfied. Such certification shall be provided to the official as set forth in § 152.09(C).
(C) Mobile homes.
(1) No mobile home shall be placed in floodway except in an existing mobile home park or existing mobile home subdivision.
(2) (a) All mobile homes shall be anchored to resist flotation, collapse or lateral movement by providing over-the-top and frame ties to ground anchors.
(b) Specific requirements shall be that:
1. Over-the-top ties be provided at 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 be provided at each corner of the home with five additional ties per side at intermediate points, with 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.
(3) For new mobile home parks and mobile home subdivisions; for expansions to existing mobile home subdivisions; for existing mobile home parks and mobile home subdivisions where the repair, reconstruction or improvement of the streets, utilities and pads equals or exceeds 50%of value of the streets, utilities and pads before the repair, reconstruction or improvement has commenced; and for mobile homes not placed in a mobile home park or mobile home subdivision, require that:
(a) Stands or lots are elevated on compacted fill or on pilings so that the lowest floor of the mobile home will be at or above the base flood level;
(b) Adequate surface drainage and access for hauler are provided; and
(c) In the instance of elevation of pilings, that lots are large enough to permit steps, piling foundations are placed in stable soil no more than ten feet apart, and reinforcement is provided for pilings more than six feet above the ground level.
(4) An evacuation plan indicating alternate vehicular access and escape routes shall be filed with the City Engineer for each mobile home subdivision located within city limits. This plan shall be prepared according to the directions of the City Engineer and shall be made available to concern federal and local agencies.
(D) Floodways.
(1) Located within areas of special flood hazard established in § 152.04 are areas designated as floodways.
(2) Since the floodway is an extremely hazardous area due to the velocity of flood waters which carry debris, potential projectile and erosion potential, the following provisions shall apply:
(a) Prohibits encroachments, including fill, new construction, substantial improvements and other developments unless certification by a professional registered engineer or architect is provided demonstrating that encroachments shall not result in any increase in flood levels during occurrence of the base flood discharge;
(b) If division (D)(2)(a) above is satisfied, all new construction and substantial improvements shall comply with all applicable flood hazard reduction provisions of § 152.06; and
(c) Prohibit the placement of any mobile homes, except in an existing mobile home park or existing mobile home subdivision.
(Prior Code, § 14.07.12) (Ord. 580, passed - -; Ord. 731, passed - -)