HomeMy WebLinkAboutOrdinance 26-1980 . ,
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ORDINANCE NQ. 26-80
AN ORDINANCE AMENDING SECTION 721 OF THE BROOKINGS ZONING I�
ORDINANCE OF 1956 AS AMENDED PERTAINING TO AROOKINGS MtINICIPAL
AIRPORT ZONING.
BE IT ORDAINED BY THE GOVERNING BODY OF THE CITY OF
BROOKINGS, S011TH DAKOTA:
I . That Section 721 of the Brookings Zoning Ordinance of 196b
as amended be and the same is hereby amended to rea� as
follows, to-wit:
Section 721. Brookings Airport Zoning Ordinance.
722. Purpose and Authority.
- a. It is herehy fonnd that an airport obstruction �as �he - -
potential of endangering the lives and property of
users of the Brookings Airport, and property or occu-
pants of land in its vicinity; that an obstruction
, may effect exist�ng and future instrument approach
minimums of Brookings Airport; and that an obstruction
may reduce the size of areas available for landing,
takeoff, and maneuvering of aircraft, thus tending to
destroy or impair the utility of Brookings Airport and
the puhlic investment therein. Accordingly, it is
declared:
1. The creation or establishnent of an obstruction
has the potential of being a public ni�isance
and may injure the region served hy Brookings
Airport;
2 . It is necessary in Lhe interest of the public
health, p»blic safety, and general welfare that
the creaLion or establishment of obstructions
that are a hazard to air navigation be pr�vented;
and
� 3. The prevention of these obstructions should be
accomplished, to the extent legally possible,
by the exercise of the police power withotit
compensation.
b. The prevention of the creation or establishment o� air-
port obstructions and the elimination, removal, altera-
tion, mitigation, or marking and lighting of existing
obstructions are public purposes for which political
subdivisions may raise and expend gublic £und.s, and
acq�iire land or interests in lanci.
723. Word Definitions.
� As used in this Ordinance, unless the context otherwise
requires:
. 1 Airport. The area designated and referred to in
the Brookings Airport Zoning Map as the Brookings
Municipal Airport.
. 2 Airport Elevation. The established elevation of
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the highest point on the usable landing area which
elevation is established to be 1637 feet above mean
sea level.
. 3 Approach Surface. A surface longitudinally centered
on the extended runway centerline, extending outward
and upwa.rd from the end of the primary surface and
at the same slope as the approach zone hei ght
limitation slope set forth in Section 724 (b) of this
Ordinance. In plan the perimeter of the approach
surface coincides with the perimeter of the approach
zone. ,
.4 Approach, Transitional, Horizontal, and Conical Zones.
These zones are set forth in Section 724 of this
Ordinance.
. 5 Board of Adjustment. The Board of Adjustment as
defined in Section 930.
.6 Conical Surface. A surface extending outward .and
� upward from the periphery of the horizontal surface
at a slope of 20 to 1 for a horizontal distance
of 4,000 feet.
.7 Dwelling. Any building or portion thereof designed
or used as a residence or sleeping place of one or
more persons.
.8 Hazard to Air Navigation. An obstruction determined
to have a substantial adverse effect on the safe and
efficient utilization of the navigable airspace.
.9 Height. For the purpose of determining the height
limits in all zones set forth in this Ordinance and
shown on the zoning map, the datum shall be mean
sea level elevation vnless otherwise specified.
. IO Horizontal Surface. A horizontal plane 150 feet above
the established airport elevation, the perimeter of
which in plan coincides with the perimeter of the
horizontal zone.
. 11 Larger than Utility Runway. A r��nway that is con-
structed for and intended to be used by propeller
driven aircraft of greater than 12,500 pounds �
maximum gross weight and jet powered aircra£t.
. 12 Nonconfor�ning Use. Any pre-existing structure,
object of natural growth, or use of land which is
inconsistent with the provisions of this Ordinance
or an amendment thereto.
. 13 Nonprecision Instrument R unway. A runway having �
. an existing instruinent approach procedure utilizing
air navigatfon facilities with only horizontal
guidance, or area type navigation equipment, for
h�hich a straight-in nonprecision instrument
approach procedure has been approved or planned.
.14 Obstruction. Any structure, growth, or other Qbject,
including a mobile object, which exceeds a limiting
height set forth in Section 724 (b) of this Ordinance.
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. 15 Primary Surface. A surface longitudinally entered on �
a runway. When the runway has a specially prepared �
hard surface the
, primary surface extends 200 feet
beyond each end of that runwa ; for militar runwa s
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or when the runwa has no s eciall re ared ha �
y p y p p rd
surface or lanned hard surface the rimar
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surface ends at each end of that runway. The
width of the p;imary s��rface is set forth in Section
724 of this Ordinance. The elevation of any point
on the primary surface is the same as the elevation
of the nearest point on the runway centerline.
. 16 Runway. A defined area on an airport prepared £or �,
landing and take-off of aircraft along its length. �
. 17 Structure. An object, incl�iding. a mobile object,
constructed or installe3 by man, includin� but without
limitation, buildings, towers, cranes, sm4kestacks,
earth formation, and overhead transmission lines.
. 18 Transitional Surfaces. These surfaces extend outward
at 90 degree angles to the runway centerline and the
runway centerline exten�ed at a slope of seven (7' ) feet
horizontally for each foot vertically from the sides
of the primary and approach surfaces to where they
intersect the horizontal and concial surfaces. -- �
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. 19 Tree. Any object of natural growth. .
. 2Q tltility Run=�ay. A runway that is constructed £or
and intended to be used by propeller driven aircraft
of 12,500 pounds maximvm gross weight and less.
724. Airspace Obstruction Zones and_ H�ight Limitat�ons.
a. In order to carry out the provisions of this Ordinance,
there are hereby created and established airspace zones
which include all of the land lying beneath the
approach surfaces, transitional surfacss, horizontal
surfaces, and conical surfaces as they apply to
Brookings Airport. Such zones are shown on Brookings
Airport Zoning Map consisting of one sheet, prepared by
Banner Associates, Inc. , Consulting Engineers�
Brookings, South Dakota, and dated May, 1978, which is
attached to this Ordinance and made a part hereof.
The various zones are hereby established and defined
as follows:
i. Utilit Runwa Visual A roach Zane (Designated as
xisting unway an - he inner edge
of this appxoach zone coincides with the k•idth of
the primary surface and is 250 feet wide. The
approach zone expands outward nniformly to a width
of 1,250 £eet at a horizontal distance of 5,400
feet from the primary surface. Its centerline is
the continuation of the centerline of the runway.
2. iTtilit Runwa Non recision Instrwnent A roach
one esignate as U timate unway - T e
i nn er edge of this approach zone coincides with
the width of the primary surface and is 500 feet '
� wide. The approach zone expands outward uniformly
to a width of 2 �000 feet at a horizontal distance
5,000 feet from the primary surface. It' s cen-
terline is the continuation of the centerline of
the runway.
� 3. Runwa Lar er Than Utilit w'ith A Visibilit
Minimum s ow s le on recision
nstrument roac one esignate as Runway
- e nner e3ge—of this approach zone
coincides with the width of the primary surface
and is 1,000 feet wide. The approach zone expands
outward uniformly to a width of 4,000 feet at a
horizontal distance o£ 10,000 feet from the pri-
mary surface. Its centerline is the continuation
of the centerline of the runway.
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4. Transitional Zone - The transitional zones are
t e areas eneat the transitional surfaces.
S. tiorizontal Zone - The horizontal zone is estab-
is e y swinging ares of 10,000 feet radii from
the center of each end of the primary surface of
Runway designated as R�inway 12/30 and connecting
the adjacent ares by drawing lines tangent to
those ares. The horizontal zone does not include
the approach and transitional zones.
6. Conical Zones - The conical zone is established
as t e area that commences at the periphery of the
hdrizontal zone and extends outward therefrom a
horizontal distance of d,000 feet.
b. ExcepL as otherwise provided in this Ordinance, no
structure shall be erected, altered, or maintained, and
no tree shall be allowed to grow in any airspace zone
created by this Ordinance to a height in excess of the
applicable height limit herein established for such
zone. Such applicable height Iimitations are hereby
established for each of the zones in question as
follows: •
1. Utilit Runwa Visual A roach Zone (Designated
as xisting unway an Slopes
twenty (20' ) feet outward for each foot upward
beginning at the end of and at the same elevation
as the primary surface and extending to a horizon-
tal distance of 5,000 feet along the extended
runway centerline.
2. Utilit Runwa Non recision Instrume:�t A roach
one - esignate as timate unway
�lopes twenty (20' ) f eet outward for each foot
upk�ard beginning at the end of and at the same
elevation as the pri�ary surface and extending
to a horizontal distance of 5,000 feet along the
extended runway centerline.
3. Runway Lar er Then Utilit With A Visibilit
Minimwn s ow As Mile Non recision
Instrument roac one - Designate as
�unway - lopes thirty-four (34' ) feet .
outward for each foot upward beginning at the
end of and at Lhe same elevation as the primary •
surface and extending to a horizontal distance
of 10,000 feet along the extended runway center-
� line.
4. Transitional Zones - Slope seven (7' ) feet
outwar or eac oot upward beginning at the
sides of and at the same elevation as the primary
surface and the approach surface,. and extending •
. to a height of 150 feet above the airport eleva-
tion which is 1,637 feet mean sea level.
In addition to the foregoing, there are estab-
lished height limits sloping seven (7' ) feet
. outward for each foot upward beginning at the
sides of and at the same elevation as the approach
surface, and extending to Where they intersect the
conical surface. �
5. Horizontal Zone - Established at 150 feet above
t e airport e evation or at a height of � 1,787 feet
above mean sea level.
6. Conical Zone - Slopes twenty (20' ) feet outward
� �or eac oot upward 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 sirport elevation.
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?25. Land use safety zoning and use restrictions.
a. In order to carry out the purpose of this Ordin�nce, as
set £arth above and a1so, in order to restrict those
uses which may be hazardous to the operational safety
of aircraft aperating to and from Brookings Airport,
and f�lrthermore to limit population and huilding den-
sity in the runway approach areas, thereby creating
sufficient open space so as t� protect life and pro-
perty in case of an accident, there are herehy created
and established the foll�wing land use safety zones.
1. Safety_ Zone A - All land in that portion of the
approac zones of a runk�ay, as defined in Section
724 hereof, which extends outward from the end of
the primary surface a distance equal to one-third
of the planned length of the runway, which distance
shall be:
a. 1809 feet for runway 12I30; .
b. 1200 feet for ulti�tate runway 18/36.
2. Saf ety_Zone B - All land in that portion of the
approac�es o£ a runway, as defined in Section
724 hereof, which extends outward from Safety
Zone A a distance eq�1a1 to two-thirds of the
planned length of t}�e r�mway, which length
shall be:
a. 3619 feet for runway 12/30;
b. 2400 feet for ultimate runway 18/36.
3. Safety Zone C - All that land which is enclosed
wit in t e perimeter of the horizontal zone, as
defined in Section 724 hereof, and is not included
in Safety Zone A or B.
b. Use Restrictions.
1. General - Subject at all times to the height
rest ictions set forth in Section 724 (b) hereof, .
no i�se shall be made of any land in any o£ the
safety zones �efineei in Section 725 (a) which �
creates or causes interference with the
operations of radio or electronic facilities
on the airport or with radio or electronic
commnnicatians between the Rirport and aircraft,
' makes it difficult for pilots to distinguish
between airport lights and other lights, results
in glare in the eyes of pilots using the airport,
i� airs visibility- in the vicinity of the airport,
p off or
� or otherwise endangcrs the lanclins, takins ,
maneuvering of aircraft.
2. Safet Zone A - Subject at all times to the
e g t restrictions set forth in Section 724 (b)
hereof, and to the general restrictions contained
� in Section 725 (b) (1) , areas designated as Safety Zone
A shall contain no buildings or temporary strnc-
tures, exposed transmission lines, or other similar
land use structural hazards and shail be restricted
to those uses which will not create, attract, or
bring together an assembly of persons thereon.
Permitted uses may include agriculture (seasonal
crops), horticulture, wildlife habitat, light
outdoor recreation, cemeteries and auto parking.
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3. Safet Zone B - Subject at all times to the
eig t restrictions set forth in Section 724 tb)
hereof, and to the general restrictions con- -
tained in Section 725 (b) (1) � areas designated as
Safety Zone B shall be restricted in use as
follows:
a. Each use shall be on a site whose area
shall not be less than one-half acre.
A dwelling, where permitted, shall be
considered as one use.
b.• A huilding plot shall be a single, uniform
and noncontrived area, whose shape is
uncomplicated and whose area shall not
exceed the following minimimn ratios with
respect to the total site area:
Site Area But Less Ratio of Building Max. Site
At Least Than Site Area To Bldg. Plot Area Population
(Acres) (Acres) Plot Area (Sq., Ft. ) (16 persons/acre)
1/2 � 8: 1 2,720 8
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1 10:1 4,350 15
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3 12; 1 10,890 45
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q 10: 1 17,420 60
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b 8; 1 32,670 90
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10 6: 1 72,600 150
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20 and up 4: 1 218,000 300 �
c. Each use shall conform to zoning require- '
ments.
d. The following uses are specifically
prohibited in Zone B: churches,
hospitals, schools, theaters, stadiums,
hotels and motels, trailer courts, camp
grounds, and other places of public
assembly. �
4. Safet� Zone C - Safety Zone C is subject only �
to�iei t restrictions set forth in Section
724 (b� hereof, and to the eneral restrictions
contained in Section 725 (b� (1).
II . That any and all ordinances or parts thereof, in conflict
herewith, are hereby repealed.
FIRST READING: August 19, ].980 �
SECOND READING: - September 2, 19�0
PASSED F� APPROVBD September 2, 1980
CIT OOKINGS
By:� � � .
og runt . ayor
ATTEST:
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