Except as otherwise provided in this chapter, no structure shall be erected, altered or maintained, and no tree shall be allowed to grow in any zone created by this chapter to a height in excess of the applicable height herein established for such zone. Nothing in this chapter shall be construed as permitting any structure to exceed the Ankeny zoning ordinance district maximum height requirement without first obtaining the appropriate approvals. Where such height conflict the more restrictive shall apply. Such applicable height limitations are established for each of the zone in questions as follows:
1. Utility Runway Visual 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. Refer to Section 201.01 of this chapter for regulatory configuration of the Ankeny Regional Airport.
2. Utility Runway Non-Precision 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.
3. Runway Larger Than Utility Visual 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.
4. Runway Larger Than Utility With a Visibility Minimum Greater Than Three-fourths Mile Non-Precision 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. Refer to Section 201.01 of this chapter for regulatory configuration of the Ankeny Regional Airport.
5. Runway Larger Than Utility With a Visibility Minimum as Low as Three-fourths Mile Non-Precision 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.
6. 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.
7. Transitional Zone. Slopes 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 910 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 at 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 at the same elevation as the approach surface, and extending a horizontal distance of 5,000 feet measured at ninety-degree angles to the extended runway centerline. Refer to Section 201.01 of this chapter for regulatory configuration of the Ankeny Regional Airport.
8. Horizontal Zone. Established 150 feet above the airport elevation or at a height of 1,060 feet above mean sea level. Refer to Section 201.01 of this chapter for regulatory configuration of the Ankeny Regional Airport.
9. 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. Refer to Section 201.01 of this chapter for regulatory configuration of the Ankeny Regional Airport.
Next Doc