BIL 111 Draft 01 1996-1998 - Laserfiche WebLink

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. . SECTION 2. Chapter 27, article 2, section 27-13, Hawaii County Code (1995 edition), is amended to read as follows: Section 27-13. Nonconforming structures. Any nonconforming structure existing on May 5, 1982 or made nonconforming by a change in the special flood hazard area may continue, subject to the following conditions: (a) Any repair, reconstruction, improvement, or addition to a nonconforming structure, if it is considered to be substantial improvement, shall comply with the applicable standards of this chapter. (b) All relocated structures shall comply with the applicable standards of this chapter. (c) Substantial improvement of a damaged, destroyed, or demolished structure located in a floodway shall not be allowed unless a variance from the flood requirements is obtained. SECTION 3. Chapter 27, article 4, section 27-18, Hawaii County Code (1995 edition), is amended by amending subsection (d) to read as follows: (d) Elevation and Floodproofing. (1) Within Zones AE and AH: (A) For residential new construction and substantial improvements: The lowest floor[, but not including floors used solely for vehicle parking, building access, or storage,] shall be elevated to or above the base flood elevation. [Should the lowest floor be below the base flood elevation, then the structure shall be designed and constructed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of floodwater. Designs for meeting this requirement must either be certified by a professional engineer or architect registered in the State of Hawaii or provide 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. The bottom of all openings shall be no higher than one foot above grade. Openings may be equipped with -2-