No person, partnership, business or corporation shall undertake or cause to be undertaken, any development or the new construction, substantial improvement or relocation of any structure, including manufactured homes within the Flood Plain Overlay District, unless the necessary permits have been obtained from the Division of Code Administration. In addition, where land is to be subdivided, utilized for a manufactured home park or subdivision or otherwise developed, a plat shall be submitted and approved in accordance with the City Subdivision Regulations. The Division of Code Administration shall require copies of all necessary permits from those governmental agencies from which approval is required by Federal or State law.
(a) Elevation and Floodproofing Information.
(1) For structures to be elevated to the base flood elevation the following items shall be submitted:
A. A plan showing the size of the proposed structures and its relation to the lots where it is to be constructed.
B. A determination of elevations of the existing grounds, proposed finished ground and lowest floors certified by a registered professional engineer, surveyor or architect.
C. Plans showing the method of elevating the proposed structure, including details of proposed fills, pile structures, retaining walls, foundations, erosion protection measures, etc. When required by the Division of Code Administration, these plans shall be prepared by a registered professional engineer or architect.
D. Plans showing the methods used to protect utilities, including sewer, water, telephone, electric, gas, etc. from flooding to the base flood elevation at the building site.
(2) For structures to be floodproofed to the base flood elevation (nonresidential) the following items shall be submitted.
A. Plans showing details of all floodproofing measures, prepared by a registered professional engineer or architect, and showing the size of the proposed structure and its relation to the lot where it is to be constructed.
B. A determination of elevations of existing ground, proposed finished ground, lowest floors and floodproofing limits; certified by a registered professional engineer, surveyor or architect.
C. A certificate prepared by the registered professional engineer or architect who prepared the plans in subsection (a)(1) hereof, that the structure in question, together with attendant utility and sanitary facilities, is designed so that:
1. Below the base flood elevation, the structure is watertight with walls substantially impermeable to the passage of water.
2. The structure will withstand the hydrostatic, hydrodynamic, buoyant impact and other forces resulting from the flood depths, velocities, pressures and other factors associated with the base flood.
D. Accessory structures that are 400 square feet or less are exempt from the above regulations, if they meet the following requirements.
1. Accessory structures shall not be used for human habitation.
2. Accessory structures shall be designed to have low flood damage potential.
3. Accessory structures shall be constructed and placed on the building site so as to offer the minimum resistance to the flow of floodwaters.
4. Accessory structures shall be firmly anchored to prevent flotation which may result in damage to other structures.
5. Service facilities, such as electric and heating equipment, shall be elevated or floodproofed.
(3) For structures that have fully enclosed areas below the base flood elevation the following items shall be submitted.
Plan showing a design that automatically equalizes hydrostatic flood forces on exterior walls by allowing for the entry and exit of floodwaters certified by a registered professional engineer or architect or meets or exceeds the following minimum criteria.
A. Minimum of two openings having a total net area of not less than one square inch for every square foot of enclosed area subject to flooding shall be provided. The bottom of all openings shall be no higher than one foot above grade. Openings may be equipped with screens, louvers, valves or other coverings or devices provided that they permit the automatic entry and exit of floodwaters.
B. A determination of elevations of the existing ground and lowest floor certified by a registered professional engineer, surveyor or architect. (Ord. 0-531. Passed 2-23-88.)
(b) Manufactured Home Permit Requirements and Application Procedure. No manufactured home shall be placed within the City until a permit has been applied for and issued. An application for a permit shall be made with the Zoning Administrator. Plans and specifications for manufactured homes intended to be placed on the site for over 180 days shall be submitted with the application showing the method of elevation in accordance with Section 1353.08(a). License and vehicle identification numbers for manufactured homes intended to be placed on the site for less than 180 days and ready for highway use, shall be submitted with the application.
(Ord. 0-835. Passed 12-10-96.)