A. No building, structure or portion thereof or any other obstruction shall be erected, altered or maintained in excess of the height limitations as established hereinafter for each zone.
B. The height limitations for each zone are as follows:
(1) Conical Zone. One hundred fifty feet above the airport elevation at the intersection with the Horizontal Zone and extending thereafter 20 feet horizontal for each foot of vertical elevation extending to a height of 350 feet above the airport elevation.
(2) Horizontal Zone. One hundred fifty feet above the airport elevation.
(3) Precision Instrument Runway Approach Zone. Beginning at the end of and at the same elevation as the primary surface and extending 50 feet horizontal for each one foot vertical for a distance of 10,000 feet along the extended runway center line and thereafter 40 feet horizontal for each foot vertical to a horizontal distance of 40,000 feet along the extended runway center line.
(4) Runway Larger Than Utility Visual Approach Zone. Beginning at the end of and at the same elevation as the primary surface and extending 20 feet horizontally for each foot vertically to a distance of 5,000 feet along the extended runway center line.
(5) Runway larger than utility with a visibility minimum greater than three-quarters of a mile Nonprecision Instrument Approach Zone. Beginning at the end of and at the same elevation as the primary surface and extending 50 feet horizontally for each one foot vertical extending to a horizontal distance of 10,000 feet along the extended runway center line and thereafter 40 feet horizontal for each one foot vertical to an additional horizontal distance of 40,000 feet along the extended runway center line.
(6) Transitional Zone. Beginning at the sides of and at the same elevation as the primary surface and the approach surface extending seven feet horizontal for each foot vertical and extending to a height of 100 feet above the airport elevation and extending to the intersection with the conical surface.
(7) Utility Runway Visual Approach Zone. Beginning at the end of and at the same elevation as the primary surface and extending 20 feet horizontal for each foot vertical a distance of 5,000 along the extended runway center line.
C. Where the precision instrument runway approach zone projects beyond the conical zone, the height: limit shall begin at the side of and at the same elevation as the approach surface extending seven feet horizontal for each foot vertical extending a distance of 5,000 feet horizontal measured at 90° angles to the extended runway center line.