Article XXV, Sec. 98-981 through 98-985
Dimensional standards
Servicing
- Applies near
- airport
- Geographic extent
- All land within the approach zones, transitional zones, horizontal zones, and conical zones as defined for airports in the county.
Extracted standards
20 individual requirements pulled out of this section’s prose, each with the sentence it came from.
Height
- Conical zone heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. slope20 ratio
Slopes upward and outward 20 feet horizontally for each foot vertically beginning at the periphery of the horizontal zone and at 150 feet above the airport elevation and extending to a height of 350 feet above the airport elevation.
- Heliport IFR approach zone heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. slope15 ratio
Slopes upward 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 10,000 feet along the extended primary surface centerline.
- Heliport IFR transitional zones heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. slope4 ratio
Slopes upward and outward four 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 350 feet measured horizontally from and at 90 degree angles to the primary surface centerline and extended centerline.
- Heliport VFR approach zone heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. slope8 ratio
Slopes upward eight 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 4,000 feet along the extended primary surface centerline.
- Heliport VFR transitional zones heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. slope2 ratio
Slopes upward and outward two feet horizontally for each foot vertically beginning at the sides of and at the same elevation as the primary surface and the approach surfaces, and extending a distance of 250 feet measured horizontally from and at 90 degree angles to the primary surface centerline and extended centerline.
- Horizontal zone heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. limit150 ft
150 feet above the airport elevation.
- Runway larger than utility with visibility as low as 3/4 mile nonprecision instrument approach zone heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. slope34 ratio
Slopes upward 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 10,000 feet along the extended runway centerline.
- Runway larger than utility with visibility > 3/4 mile nonprecision instrument approach zone heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. slope34 ratio
Slopes upward 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 10,000 feet along the extended runway centerline.
- Runway larger than utility visual approach zone heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. slope20 ratio
Slopes upward 20 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 5,000 feet along the extended runway centerline.
- Minimum heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. exception35 ft
Nothing in this section shall be construed as prohibiting the growth, construction or maintenance of any tree or structure to a height up to 35 feet above the surface of the land.
- Precision instrument runway approach zone heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. slope50 ratio
Slopes upward 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 10,000 feet along the extended runway centerline; thence slopes upward 40 feet horizontally for each foot vertically to an additional horizontal distance of 40,000 feet along the extended runway centerline.
- STOL approach zone heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. slope15 ratio
Slopes upward 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 10,000 feet along the extended runway centerline.
- STOL transitional zones heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. slope4 ratio
Slopes upward and outward four 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 extends to an elevation of 100 feet above the primary surface.
- Transitional zones heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. slope7 ratio
Slopes upward and outward seven 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 150 feet above the airport elevation.
- Utility runway nonprecision instrument approach zone heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. slope20 ratio
Slopes upward 20 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 5,000 feet along the extended runway centerline.
- Utility runway visual approach zone heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. slope20 ratio
Slopes upward 20 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 5,000 feet along the extended runway centerline.
Other
- HeightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. compliance exemption for structures under 75 feet75 ft
Compliance by a tree or structure of less than 75 feet of vertical height above the ground shall not be required in the horizontal and conical zones or in any approach and transitional zones beyond a horizontal distance of 4,200 feet from each end of the runway except when such tree or structure, because of terrain, land contour, or topographic features, would extend above the height limit prescribed for the respective zone.
- More restrictive heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. limitation prevails
Where an area is covered by more than one height limitation, the more restrictive limitation shall prevail.
- ProhibitedProhibitedNot allowed in the district at all, short of rezoning or a variance. interference with airport operations
No use may be made of land or water within any zone established by this chapter in such a manner as to create electrical interference with navigational signals or radio communication between the airport and aircraft, make it difficult for pilots to distinguish between airport lights and others, result in glare in the eyes of pilots using the airport, impair visibility in the vicinity of the airport or otherwise in any way create a hazard or endanger the landing, takeoff, or maneuvering of aircraft intending to use the airport.
- ProhibitedProhibitedNot allowed in the district at all, short of rezoning or a variance. places of public assembly in approach zones
Places of public assembly, such as schools, churches, hospitals, apartment houses, theaters, and assembly halls shall not be erected or otherwise located in any area which would be classified as an approach zone under this article.
From the ordinance
There are hereby created and established certain zones which include all of the land lying within the approach zones, transitional zones, horizontal zones, and conical zones as they apply to a particular airport.