§ 150.18  AIRPORT OVERLAY DISTRICT HEIGHT LIMITATIONS.
   (A)   Except as otherwise provided in this subchapter, no structure shall be erected, altered, or maintained, and no tree shall be allowed to grow in any zone created by this subchapter to a height in excess of the applicable height limit herein established for such zone.
   (B)   Such applicable height limitations are hereby established for each of the zones in question as follows:
      (1)   Utility runway nonprecision instrument approach zone.  Slopes 20 feet outward for each foot upward beginning at the end of and at the same elevation as the primary surface and extending to a horizontal distance of 5,000 feet along the extended runway centerline.  This zone applies to the Runway 17 and Runway 35 ends.
      (2)   Runway larger than utility with a visibility minimum greater than ¾-mile nonprecision instrument approach zone.  Slopes 34 feet outward for each foot upward beginning at the end of and at the same elevation as the primary surface and extending to a horizontal distance of 10,000 feet along the extended runway centerline.  This zone applies to the Runway 23 end.
      (3)   Precision instrument runway approach zone.  Slopes 50 feet outward for each foot upward beginning at the end of and at the same elevation as the primary surface and extending to a horizontal distance of 10,000 feet along the extended runway centerline; thence slopes upward 40 feet horizontally for each foot vertically to an additional horizontal distance of 40,000 feet along the extended runway centerline. This zone applies to the Runway 5 end.
      (4)   Transitional zones.  Slope 7 feet outward for each foot upward beginning at the sides of and at the same elevation as the primary surface and the approach surface, and extending to a height of 150 feet above the airport elevation which is 100 feet above mean sea level. In addition to the foregoing, there are established height limits sloping 7 feet outward for each foot upward beginning at the sides of and the same elevation as the approach surface, and extending to where they intersect the conical surface. Where the precision instrument runway approach zone projects beyond the conical zone, there are established height limits sloping 7 feet outward for each foot upward beginning at the sides of and the same elevation as the approach surface, and extending a horizontal distance of 5,000 feet measured at 90-degree angles to the extended runway centerline.
      (5)   Horizontal zone.  Established at 150 feet above the airport elevation or at a height of 164 feet above mean sea level.
      (6)   Conical zone.  Slopes 20 feet outward for each foot upward beginning at the periphery of the horizontal zone and at 150 feet above the airport elevation and extending to a height of 350 feet above the airport elevation.
      (7)   Excepted height limitations.  Nothing in this subchapter shall be construed as prohibiting the construction or maintenance of any structure, or growth of any tree to a height up to 50 feet above the surface of the land.
(Ord. passed 4-4-2005)