Laserfiche WebLink
1005.07. Airport Zoning. <br />Subdivision 1. Airspace Obstruction Zoning. <br />(1) <br />Airspace Zones. In order to carry out the purpose of this <br />Ordinance as set forth above, the following airspace zones are <br />hereby established: Primary Zone, Horizontal Zone, Conical <br />Zone, Approach Zone, and Transitional Zone, and whose locations <br />and dimensions are as follows: <br />(,2i (X Primary Zone. All that land which lies directly under an <br />imaginary primary surface longitudinally centered on a runway <br />and: <br />Extending 200 feet beyond each end of the runway. The <br />elevation of any point on the primary surface is the same as <br />the elevation of the nearest point on the runway centerline. <br />The width of the primary surface is 250 feet. <br />Horizontal �i . All that land which lies directly under an <br />imaginary horizontal surface 150 feet above the established <br />airport elevation, the perimeter of which is constructed by <br />swinging arcs of specified radii from the center of each end <br />of the primary surface of each runway and connecting the <br />adjacent arcs by lines tangent to those arcs. The radius of <br />each arc is 6,000 feet. <br />(C) Conical Zone. All that land which lies directly under an <br />imaginary conical surface extending upward and outward <br />from the periphery of the horizontal surface at a slope of 20 <br />to 1 for a horizontal distance of 4,000 feet as measured <br />radially outward from the periphery of the horizontal <br />surface. <br />(D) Approach Zone. All that land which lies directly under an <br />imaginary approach surface longitudinally centered on the <br />extended centerline at each end of a runway. The inner <br />edge of the approach surface is at the same width and <br />elevation as, and coincides with, the end of the primary <br />surface. The approach surface inclines upward and outward <br />at a slope of 20:1. <br />The approach surface expands uniformly to a width of 2,500 <br />feet at a distance of 10,000 feet to the periphery of the <br />conical surface. <br />Height Restrictions. Except as otherwise provided in this <br />Ordinance, and except as necessary and incidental to airport <br />operations, no structure or tree shall be constructed, altered, <br />maintained, or allowed to grow in any airspace zone so as to <br />project aboveb'�ny of the imaginary airspace surfaces described in <br />said (1) hereof. Where an area is covered by more than <br />one height limitation, the more restrictive limitations shall <br />prevail. <br />105 <br />