2014-030 Cox Field Planned Development Airport Zoning Ordinance

Home Browse Search

transitional surfaces extend to the point at which they intercept the horizontal surface at a height of 150 feet above the established airport elevation. • Horizontal surface The horizontal surface is a horizontal plane located 150 feet above the established airport elevation and encompasses an area from the transitional surface to the conical surface. The perimeter is constructed by generating arcs from the center of each end of the primary surface and connecting the adjacent arcs by lines tangent to those arcs. • Conical surface The conical surface extends upward and outward from the periphery of the horizontal surface at a slope of 20 feet horizontally for every one foot vertically (20:1) for a horizontal distance of 4,000 feet. • Approach surface The approach surface is longitudinally centered on the extended runway centerline and extends outward and upward from the end of the runway primary surface. The approach slope of a runway is a ratio of 20:1, 34:1, or 50:1, depending on the approach type. The length of the approach surface varies from 5,000 to 50,000 feet and also depends upon the approach type. T. Incompatible Land Use. (FAA FAR Sec. 150.7) The use of land which is normally incompatible with the aircraft and airport operations (such as, but not limited to, homes, schools, nursing homes, hospitals, and libraries, and the incompatible land uses as referred to within the various subzones in this Ordinance). U. Instrument Runway. A runway with an instrument approach procedure utilizing an Instrument Landing System (ILS), a Microwave Landing System (MLS), a Precision Approach Radar (PAR), a Transponder Landing System (TLS), or a satellite- based system capable of operating to the same level of precision guidance provided by the other indicated systems. V. Lighting and Marking of Hazards to Air Navigation. Installation of appropriate lighting fixtures, painted markings, or other devices to such objects or structures that constitute hazards to air navigation. W. Noise Exposure Contour. (N.E.C.) (FAA Web site) Lines drawn around a noise source indicating constant energy levels of noise exposure. DNL is the measure used to describe community exposure to noise. X. Noise Impact. A condition that exists when the noise levels that occur in an area exceed a level identified as appropriate for the activities in that area. Y. Noise Sensitive Land Use. A use where airport noise typically interferes with normal activities associated with the use. Examples of noise — sensitive land uses include residential, educational, health, and religious structures and sites, and parks, recreational areas (including areas with wilderness characteristics), wildlife 46