§ 160.421  CONICAL ZONE.
   (a)   Within (*) feet from the established airport reference point, no building or structure shall be erected or altered to project above a horizontal plane 150 feet above the established airport elevation. This horizontal zone does not include the approach or transition zones.
   (b)   Within the conical zone, which commences at the periphery of the horizontal zone and extends outward there from a distance of (*) feet, no building or structure shall be erected or altered to project above a plane with a slope of one (vertical) to 20 (horizontal) (1:20).
   (c)   Exception: Nothing in this section shall be construed as prohibiting the growth, construction, or maintenance of any tree or structure to a height up to 20 feet above the surface of the land.
(*)   The applicable distance in feet must be based on runway length as set forth in § 77.25 Civil Airport Imaginary Surfaces of the Federal Aviation Regulations.
(1992 Code, App. B, § 15.43.106)  (Ord. 42-83, passed 6-27-1983; Ord. 76-07, passed 6-4-2007; Ord. 71-09, passed 8-3-2009; Ord. 9-13, passed 3-19-2013)