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Article 10: Definitions Section 10.1: Definitions Orange County, North Carolina – Unified Development Ordinance Page 10-16 Flood-resistant material Any building product, material, component or system, capable of withstanding direct and prolonged contact (minimum 72 hours) with floodwaters without sustaining damage that requires more than low-cost cosmetic repair. Any material that is water-soluble or is not resistant to alkali or acid in water, including normal adhesives for above-grade use, is not flood-resistant. Pressure-treated lumber or naturally decay- resistant lumbers are acceptable flooring materials. Sheet-type flooring coverings that restrict evaporation from below and materials that are impervious, but dimensionally unstable are not acceptable. Materials that absorb or retain water excessively after submergence are not flood-resistant. Please refer to Technical Bulletin 2, Flood Damage-Resistant Materials Requirements, and available from the FEMA. Class 4 and 5 materials, referenced therein, are acceptable flood-resistant materials. Floodway The channel of a river or other watercourse and the adjacent land areas that must be reserved in order to discharge the base flood without cumulatively increasing the water surface elevation more than one foot. This term may also be referred to as “regulatory floodway.” Floodway encroachment analysis An engineering analysis of the impact that a proposed encroachment into a floodway or non- encroachment area is expected to have on the floodway boundaries and flood levels during the occurrence of the base flood discharge. The evaluation shall be prepared by a qualified North Carolina licensed engineer using standard engineering methods and models. Flood Zone A geographical area shown on a Flood Insurance Rate Map that reflects the severity or type of flooding in the area. Floor See “Lowest Floor”. Floor Area Ratio Floor Area Ratio (FAR) is the maximum floor area permitted for each square foot of land area. Footcandle See Outdoor Lighting, Foot-candle. Forest Plantation An area of planted trees that may be conifers (pines) or hardwoods. On a plantation, the intended crop trees are planted rather than naturally regenerated from seed on the site, coppice (sprouting), or seed that is blown or carried into the site. Forest Vegetation The plants of an area which grow together in disturbed or undisturbed conditions in various wooded plant communities in any combination or trees, saplings, shrubs, vines, and herbaceous plants. This includes mature and successional forests as well as cutover stands. Fraternity, Sorority House A building occupied by and maintained exclusively for college or university students who are affiliated with a social, honorary or professional organization and which is recognized by the college, university or other institution of higher learning. Freeboard Height added to the Base Flood Elevation (BFE) to account for the many unknown factors that could contribute to flood elevations. Frontage, Building Formatte Formatte Formatte Auto Formatte Formatte Auto Formatte Formatte Auto 88