44.06.020 Specific Standards

In all special flood hazard areas where base flood elevation data have been provided as set forth in Section 44.04.010, Establishment of development permit, or Section 44.04.020, Use of Other Base Flood Data, the following provisions are required:

(a) Residential Construction.

New construction and substantial improvement of any residential structure shall have the lowest floor, including basement, elevated on fill to at least one foot above the base flood elevation.

(b) Nonresidential Construction.

Construction and substantial improvement of any nonresidential structure shall either have the lowest floor, including basement, elevated on fill to at least one foot above the base flood elevation or, together with attendant utility and sanitary facilities shall:

(1) Be flood-proofed to at least two feet above the base flood elevation, so that below this elevation the structure is watertight with walls substantially impermeable to the passage of water.

(2) Have structural components capable of resisting hydrostatic and hydrodynamic loads and effects of buoyancy.

(3) Be certified by a registered professional engineer or architect that the standards of this subsection are satisfied. Such certification shall be provided to the official as set forth in Section 44.04.030(b).

(c) Manufactured Homes

(1) Manufactured homes shall be anchored in accordance with Section 5.1-1(2).

(2) All manufactured homes or those to be substantially improved shall be elevated on a permanent foundation such that the lowest floor of the manufactured home is elevated on fill to at least one foot above the base flood elevation, and is securely anchored to an adequately anchored foundation system.