§ IV. Airport zone height limitations.

Except as otherwise provided in this ordinance, no structure or tree shall be erected, altered, allowed to grow, or be maintained in any zone created by this ordinance to a height in excess of the applicable height limit herein established for such zone. Such applicable height limitations are hereby established for each of the zones in question as follows:

1.

Runway Larger than Utility with a Visibility Minimum Greater than ¾ Mile Nonprecision Instrument Approach Zone: Slopes upward thirty-four (34) feet horizontally for each foot vertically beginning at the end of and at the same elevation as the primary surface and extending to a horizontal distance of ten thousand (10,000) feet along the extended runway centerline.

2.

Precision Instrument Runway Approach Zone: Slopes upward fifty (50) feet horizontally for each foot vertically beginning at the end of and at the same elevation as the primary surface and extending to a horizontal distance of ten thousand (10,000) feet along the extended runway centerline; thence slopes upward forty (40) feet horizontally for each foot vertically to an additional horizontal distance of forty thousand (40,000) feet along the extended runway centerline.

3.

Heliport VFR Approach Zones: Slopes upward eight (8) feet horizontally for each foot vertically beginning at the end of and at the same elevation as the primary surface and extending to a distance of four thousand (4,000) feet along the extended primary surface centerline.

4.

Heliport IFR Approach Zones: Slopes upward fifteen (15) feet horizontally for each foot vertically beginning at the end of and at the same elevation as the primary surface and extending to a distance of ten thousand (10,000) feet along the extended primary surface centerline.

5.

Transitional Zones: Slopes upward and outward seven (7) feet horizontally for each foot vertically beginning at the sides of and at the same elevation as the primary surface and the approach zones and extending to a height of one hundred fifty (150) feet above the airport elevation, or one hundred seventy-four (174) feet above mean sea level. In addition to the foregoing, there are established height limits sloping upward and outward seven (7) feet horizontally for each foot vertically beginning at the sides of and at the same elevation as the approach zones and extending to where they intersect the conical surface. Where the precision instrument runway approach zone projects beyond the conical zone, height limits sloping upward and outward seven (7) feet horizontally for each foot vertically shall be maintained beginning at the sides of and at the same elevation as precision instrument runway approach surface and extending to a horizontal distance of five thousand (5,000) feet measured at ninety (90) degree angles to the extended runway centerline.

6.

Heliport VFR Transitional Zones: Slopes upward and outward two (2) feet horizontally for each foot vertically beginning at the sides of and at the same elevation as the primary surface and the approach surface and extending a distance of two hundred fifty (250) feet measured horizontally from and at ninety (90) degree angles to the primary surface centerline and extended centerline.

7.

Heliport IFR Transitional Zones: Slopes upward and outward four (4) feet horizontally for each foot vertically beginning at the sides of and at the same elevation as the primary surface and a portion of the sides of the approach surface and extending a distance of three hundred fifty (350) feet measured horizontally from and at ninety (90) degree angles to the primary surface centerline and extended centerline.

8.

Horizontal Zone: One hundred and fifty (150) feet above the airport elevation or a height of one hundred seventy-four (174) feet above mean sea level.

9.

Conical Zone: Slopes upward and outward twenty (20) feet horizontally for each foot vertically beginning at the periphery of the horizontal zone and at one hundred fifty (150) feet above the airport elevation and extending to a height of three hundred fifty (350) feet above the airport elevation.

Where an area is covered by more than one height limitation, the more restrictive limitation shall prevail.