15.20.080 Specific standards.
In all areas of special flood hazards where base flood elevation data has been provided as set forth in Section 15.20.030D, use of other base flood data, the following standards are required:
A. Residential Construction. New construction and substantial improvement of any residential structure shall have the lowest floor, including basement, elevated to or above the base flood elevation.
B. Nonresidential Construction. New construction and substantial improvement of any commercial, industrial or other nonresidential structure shall either have the lowest floor, including basement, elevated to or above the base flood elevation; or, together with attendant utility and sanitary facilities shall:
1. Be flood-proofed so that below the base flood level the structure is watertight with walls substantially impermeable to the passage of water; and
2. Have structural components capable of resisting hydrostatic and hydrodynamic loads and effects of buoyancy; and
3. Be certified by a registered professional engineer or architect that the standards of this subsection are satisfied. Such certification shall be provided the program Manager as herein defined. (Ord. 1-1981 § 11, 1981.)