Except as otherwise provided for in this chapter, no structure or tree shall be erected, altered, or allowed to grow, or maintained in any surface created by this chapter to a height in excess of the height limit herein established for such zone. Such height limitations are hereby established for each of the zones in question as follows:
A. Visual Approach Zone For Utility Runway: One foot (1') in height for each twenty feet (20') in horizontal distance beginning at a point on and at the centerline elevation of the end of the runway and extending to a point five thousand feet (5,000') from the end of the runway.
B. Transitional Zone: These zones extend outward and upward at right angles to the runway centerline and the runway centerline extended at a slope of seven to one (7:1) from the sides of the primary zone and from the sides of the approach zones.
C. Horizontal Zone: A horizontal plane one hundred fifty feet (150') above the established airport elevation, the perimeter of which is constructed by swinging arcs of specified radii from the center of each end of the primary zone of each runway of each airport and connecting the adjacent arcs by lines tangent to those arcs. The radius of each arc is five thousand feet (5,000') for all runways designated as utility or visual. The radius of the arc specified for each end of a runway will have the same arithmetical value. That value will be the highest determined for either end of the runway when a five thousand foot (5,000') arc is encompassed by tangents connecting two (2) adjacent ten thousand foot (10,000') arcs. The five thousand foot (5,000') arc shall be disregarded on the construction of the perimeter of the horizontal zone.
D. Conical Zone: A zone extending outward and upward from the periphery of the horizontal zone a slope of twenty to one (20:1) for a horizontal distance of four thousand feet (4,000').
E. Excepted Height Limitations: Nothing in this chapter shall be construed as prohibiting the growth, construction or maintenance of any tree or structure to a height up to thirty feet (30') above the surface of the land.
Where an area is covered by more than one height limitation, the more restrictive limitation shall prevail. (Ord. 74-4, 10-15-1974)