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The following words, terms and phrases, when used in this division, shall have the meanings ascribed to them in this section, except where the context clearly indicates a different meaning.
ADMINISTRATIVE AGENCIES. Those agencies which have the responsibility for the administration and enforcement of this division.
AIRPORT. The Dallas-Fort Worth International Airport, located in Dallas and Tarrant Counties, Texas.
AIRPORT ELEVATION. The established elevation of the highest point on the usable landing area, such elevation being 606 feet above mean sea level.
AIRPORT HAZARD. Any structure, tree, installation, electronic and/or visual interference, or use of land or water which obstructs the airspace required for the flight of aircraft in landing or taking off at the airport or is otherwise hazardous to such landing or taking off of aircraft.
AIRPORT HAZARD AREA. Any area of land or water under the imaginary surfaces as established in § 3-194 upon which an airport hazard might be established if not prevented as provided in this division.
AIRPORT ZONE. The space between the earth’s surface and the imaginary surfaces as established in § 3-194.
BOARD OF ADJUSTMENT. A board consisting of five members appointed by the joint airport zoning board as provided by state law, specifically Tex. Transportation Code Ch. 22.
HEIGHT. For the purpose of determining the height limits in all zones set forth in this division and shown on the zoning map, the datum shall be measured in mean sea level elevation unless otherwise specified.
INSTALLATION. Any electronic or visual interference that is not included within the definition of structure or tree.
JOINT AIRPORT ZONING BOARD. A board having as members two representatives appointed by each political subdivision participating in its creation and in addition a chairperson elected by a majority of the members so appointed.
NONCONFORMING USE. Any structure, tree or use of land which is lawfully in existence at the time the regulation is prescribed in the ordinance or an amendment thereto becomes effective and does not then meet the requirement of such regulation.
POLITICAL SUBDIVISION. Any municipality, city, town, village or county.
RUNWAY. The paved surface of an airport designated for the landing and taking off of aircraft.
STRUCTURE. An object permanent, or temporarily constructed or installed by humans, including, but without limitation, buildings, towers, smokestacks and overhead transmission lines.
TREE. Any object of natural growth.
ZONING MAP. “The Hazard Zoning Maps Of The Joint Airport Zoning Board For The Dallas-Fort Worth International Airport.”
(Ord. 6687, § 2, passed 6-19-1972)
Cross-reference:
Definitions and rules of construction generally, see § 1-2
The hazard zoning maps for the Dallas-Fort Worth International Airport, prepared by the engineering and architectural firm of Tippetts-Abbott-McCarthy-Stratton, consisting of 20 pages and dated December, 1970, is hereby incorporated by reference and made a part of this division for all purposes.
(Ord. 6687, § 3, passed 6-19-1972)
(a) The following imaginary surfaces are established to implement the provisions of this division.
(b) The dimensions, elevations above mean sea level, slopes and radii applicable to the imaginary surfaces shall be as shown on the zoning map.
(1) Primary surface. A surface longitudinally centered on a runway, and extending beyond the ends of the runway. The elevation of any point on the primary surface is the same as the elevation of the nearest point on the runway centerline.
(2) Horizontal surface. A horizontal plane surface 150 feet above the established airport elevation, the perimeter of which is constructed by swinging arcs of specified radii from the center of each end of the primary surface of each runway and connecting the adjacent arcs by lines tangent to those arcs.
(3) Conical surface. A surface extending outward and upward from the entire perimeter of the horizontal surface, at a specified slope and for a specified distance.
(4) Approach surface. A surface longitudinally centered on the extended runway centerline and extending outward and upward from each end of the primary surface for a specified distance at a specified slope, and expands its horizontal dimension uniformly to a specified width.
(5) Transitional surfaces. A surface extending outward and upward at right angles to the runway centerline and the runway centerline extended at a specified slope from the sides of the primary surface and from the sides of the approach surfaces. Transitional surfaces for those portions of the conical surfaces extend a specified distance measured horizontally from the edge of the approach surface and at right angles to the runway centerline.
(Ord. 6687, § 4, passed 6-10-1972)
Except as otherwise may be provided in this division, no structure, tree or installation shall be erected, altered, allowed to grow or be maintained within the airport hazard zoning area which will be above the imaginary surfaces as established by and shown on the zoning map.
(Ord. 6687, § 5, passed 6-19-1972)
Notwithstanding any other provision of this division, no use may be made of land or water nor installation placed on land or water within the airport hazard area that will create interference with radio communication between the airport and aircraft; or that will create interference with any air navigation facility, airport visual approach or landing aid, aircraft arresting device or meteorological device; or that will result in glare in the eyes of flyers using the airport but this prohibition shall not include momentary glare or glare from vertical or downward reflecting windows or glass panels used in the construction of structures; or that will impair visibility in the vicinity of the airport, attract birds or that will otherwise endanger the landing, taking off or maneuvering of aircraft operating through the facilities of the airport. No other airport or landing field shall be constructed within the airport hazard area.
(Ord. 6687, § 6, passed 6-19-1972)
Structures, trees or installations existing prior to the effective date of these regulations which do not conform to the requirements of this division shall be considered as legal nonconforming uses. This division shall not be construed to require the removal, lowering, change or alteration of any legal nonconforming use structure, tree or installation. A permit shall be required for a legal nonconforming use and shall be issued on application of the owner or agent accompanied by affidavit that the use, structure, tree or installation was in existence on the effective date of these regulations. Application for permits for nonconforming users shall be made within 180 days from the effective date of these regulations.
(Ord. 6687, § 7, passed 6-19-1972)
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