The following words, terms and phrases, when used in this section,
shall have the meanings ascribed to them in this subsection, except
where the context clearly indicates a different meaning:
ACREAGE, NET
The area of a parcel being developed for a development project
including the open space required by the zoning district.
CLASSIFICATIONS OF LIGHTING
Lighting shall be classified in one of the following categories:
A.
Class 1 "functional" lighting. All outdoor lighting used for,
but not limited to, outdoor sales or eating areas, assembly, advertising
and other signs, recreational facilities and other similar applications
where color rendition is important to preserve the effectiveness of
the activity.
B.
Class 2 "safety" lighting. All outdoor lighting used for, but
not limited to, illumination for walkways, roadways, equipment yards,
parking lots and outdoor security where general illumination for safety
or security of the grounds is the primary concern.
C.
Class 3 "decorative" lighting. Any outdoor lighting used for
decorative effects including, but not limited to, architectural illumination,
flag and monument lighting, and illumination of trees, bushes, etc.
D.
Multiclass lighting. Any outdoor lighting used for more than
one purpose, such as security and decoration, such that its use falls
under the definition of two or more classes as defined for Class 1,
2 and 3 lighting. All multiclass lighting shall comply with the most
restrictive class of which it falls under.
DEVELOPMENT PROJECT
Any residential, commercial, industrial or mixed use subdivision
plan or development plan that is submitted to the Village for approval.
DIRECT ILLUMINATION
Illumination resulting from light emitted directly from a
lamp or luminaire, not light diffused through translucent signs or
reflected from other surfaces such as the ground or building faces.
FOOTCANDLE
A unit of light expressed in lumens per square foot.
FULLY SHIELDED FIXTURE or FULL CUTOFF FIXTURE
An outdoor light fixture shielded in such a manner that 100%
of all light emitted by the fixture, either directly from the lamp
or indirectly from the fixture, is projected below the horizontal
plane as determined by photometric test or certified by the manufacturer.
GLARE
Intense light from an illumination source that may result
in visual impairment or discomfort to the average person. Lighting
installed in conformance with this article should not be considered
to cause glare unless unforeseen circumstances or conditions are discovered
during or after installation.
HEIGHT
The height of a light structure shall be the vertical distance
between the uppermost extremity of any light structure, pole or supporting
member and the grade level.
LUMEN
The unit used to measure the actual amount of light that
is produced by a lamp. For all lamp types and sources, the initial
output, as defined by the lamp or source manufacturer, is the value
to be considered.
LUMINAIRE
The complete lighting unit consisting of a lamp or lamps
together with the parts designed to distribute the light, to position
and protect the lamps and to connect the lamps to the power supply.
MEASUREMENT
For the purposes of this article, unless otherwise stated,
illumination levels shall be measured at a point three feet above
grade with the measuring device aimed directly at the light source(s)
being measured. Measurements shall be taken using baffles or shields
to separate the sources(s) under review from other existing or ambient
sources such as streetlights, in a manner that eliminates to the greatest
extent possible other light sources.
OPAQUE
Opaque means that material must not transmit light from an
internal illumination source.
OUTDOOR LIGHT FIXTURES
Outdoor electrically powered illuminating devices, outdoor
lighting or reflective surfaces, lamps and similar devices, either
permanently installed or portable, which are used for illumination
or advertisement. Such devices shall include, but are not limited
to, linear strip lights, search lights, spotlights and flood lights
for buildings and structures; recreational areas; parking lot areas;
landscape and architectural lighting; signs (advertising or other);
or product display areas.
OUTDOOR LIGHT OUTPUT, TOTAL
The maximum total amount of light, measured in lumens, from
all outdoor light fixtures. For all lamp types and sources, the initial
output, as defined by the lamp or source manufacturer, is the value
to be considered.
PARTIALLY SHIELDED FIXTURE or CUTOFF FIXTURE
An outdoor light fixture shielded in such a manner that more
than zero but less than 10% of the light emitted directly from the
lamp or indirectly from the fixture is projected at angles above the
horizontal, as determined by photometric test or certified by the
manufacturer.
TEMPORARY LIGHTING
Lighting that does not conform to the provisions of this article and which will not be used for more than one thirty-day period within a calendar year, with one thirty-day extension. Temporary lighting is intended for uses that by their nature are of limited duration; e.g., civic events, or construction projects, not including exempt lighting listed in §
245-151. Temporary lighting requires approval by the Zoning Administrator.
UNIFORMITY RATIO
The average illuminance shall not exceed minimum values by
more than the product of the minimum value and the specified ratio.
USE, ABANDONMENT OF
The relinquishment of a property, or the cessation of a use
or activity by the owner or tenant for a period of one year, excluding
temporary or short term interruptions for the purpose of remodeling,
maintaining, or otherwise improving or rearranging a facility. A use
shall be deemed abandoned when such use is suspended as evidenced
by the cessation of activities or conditions that constitute the principle
use of the property.
WATT
The unit used to measure the electrical power consumption
of a lamp, or when describing a fixture, the fixture input wattage
before ballast losses.
All nonexempt outdoor lighting fixtures shall have full shielding
to prevent direct view of the lamp or reflector as viewed from anywhere
along the property line or above the horizontal, except for the following:
A. Class 1 and Class 3 lighting fixtures with an initial lamp output
at or below 500 lumens per fixture may be unshielded provided that
the fixture is screened from public view.
B. Class 1 and Class 3 lighting fixtures with an initial lamp output
at or below 1,000 lumens per fixture may be partially shielded provided
that the fixture is screened from public view.
Total outdoor lighting lumen output shall not exceed the limits
in Table 245-137, given in lumens per acre. The following shall be
included in this limit:
A. Indoor lighting, located within 12 feet of window glass, that is
used for or contributes to illumination of displays, merchandise or
signage shall be included in the total outdoor light output, by including
25% of the contributing as though they produced only 1/4 of the lamp's
rated lumen output. If the indoor lighting is directed through the
window glass or otherwise used for exterior illumination, then the
full 100% of the lamp's rated lumen output shall be included.
B. Outdoor lighting fixtures that are fully shielded and installed under
canopies, roof eaves and building overhangs are counted toward these
limits according to the following:
(1)
Outdoor light fixtures installed under canopies, building overhangs,
or roof eaves where the center of the lamp or luminaire is located
at least five feet but less than 10 feet from the nearest edge of
the canopy or overhang are to be included in the total outdoor light
output, by including 25% of the contributing lamp's rated lumen output;
(2)
Outdoor light fixtures located under the canopy and 10 or more
feet from the nearest edge of a canopy, building overhang, or eave
are to be included in the total outdoor light output, by including
10% of the contributing lamp's rated lumen output;
(3)
Outdoor lighting fixtures located under the canopy and less
than five feet from the nearest edge of the canopy, building overhang,
or eave, are to be included in the total outdoor light input by including
100% of the contributing lamp's rated lumen output.
Table 245-137 Total Outdoor Light Output Standards
|
---|
Maximum Lumens Per Acre (Initial Lamp Lumens)
|
Lighting Zone
|
---|
|
Zone 3
|
Zone 2
|
Zone 1
|
---|
Total (fully shielded plus unshielded)
|
125,000
|
100,000
|
50,000
|
Unshielded only (Class 1 and 3)
|
10,000
|
10,000
|
4,000
|
Unless otherwise approved in accordance with this section, all
luminaries shall be of a full cutoff design and directed so as to
confine the area of light dispersion to the property and/or building
area that it is intended to illuminate. More specifically, all lighting
installations shall conform to the following standards:
A. All luminaries except street lights shall be located, aimed or shielded
so as to prevent stray light trespassing across property boundaries,
measurable at or below 0.05 footcandle while holding meter perpendicular
to and aimed directly at the offending source(s).
B. Where adjacent to nonresidential property, the maximum permitted
illumination level located 10 feet within that adjacent property shall
be no greater than 0.1 horizontal footcandles.
C. Where adjacent to residential property, the maximum permitted illumination
level on a residentially zoned parcel located immediately within that
adjacent property shall be no greater than 0.01 horizontal footcandles.
D. Ground-mounted lighting. In order to fully hide the light fixture
from public view and to prevent glare and brightness from normal public
view, all ground-mounted luminaries designed or intended for purposes
of illuminating, signs, flagpoles or other onsite amenities shall
be completely screened, at the time of installation, with nonseasonal
vegetative cover or other materials as approved by the Plan Commission.
Additional louvers or shielding may be required to prevent source
brightness and glare from normal public view.
In addition to the requirements of this article, the following
uses shall have additional restrictions.
A. Illuminated outdoor recreation facilities:
(1)
Shall be subject to a conditional use grant.
(2)
Lighting for outdoor recreational facilities including athletic
fields, courts, or tracks shall be exempt from the lumens per acre
limits of this section.
(3)
All lighting installations shall be designed to achieve no greater
than the minimal illuminance levels for the activity as recommended
by the Illuminating Engineering Society of North America (IESNA RP-6).
(4)
Lighting trespass requirements are maintained.
B. Auto display lots.
(1)
Lighting for display lots shall be exempt from the lumens per
parcel limits of this section.
(2)
Total output. The total light output used for illuminating display
lots shall not exceed 20 footcandles.
(3)
Every display lot lighting system and design shall be certified
by a registered engineer as conforming to all restrictions in this
section.
C. Service station canopies.
(1)
All luminaries mounted on the under surface of service station
canopies shall be fully shielded, recessed, and utilize flat glass
or flat plastic (acrylic or polycarbonate) covers, with no direct
illumination permitted at or above the horizontal plane.
(2)
Total output. The total light output used for illuminating service
station canopies, defined as the sum of all under-canopy initial lamp
outputs in lumens, shall not exceed 20 footcandles. All lighting mounted
under the canopy, including but not limited to luminaries mounted
on the lower surface of the canopy and auxiliary lighting within signage
or panels over the pumps, is to be included toward the total.
(3)
No lighting shall be placed on the facade or roof of the canopy.
D. Street lighting installed by private parties (developers and land
owners). Where private street lighting is installed, the luminaries
shall be fully shielded and shall not exceed 2,700 lumens per fixture.
Where private parties install street lighting on streets that are
or will become public streets, the luminaries shall be approved by
both the Plan Commission and the Public Works and Utilities Committee.
Illumination of landscaping shall utilize diffused or muted
lighting, avoid glare, and minimize light trespass and escape beyond
landscaping onto neighboring property, streets, or the night sky.
The following types of lighting shall be prohibited except as
otherwise approved by the Plan Commission:
A. Swivel-mounted luminaries.
B. Festoon lighting, "string" lighting or any light source erected in
such a manner as to be subject to noticeable periodic movement as
a result of wind pressure or atmospheric conditions.
C. Any artificial light source that creates glare within the normal
range of vision from any public walk or thoroughfare under normal
weather conditions.
D. Display of intermittent lights or flashing, blinking, moving lights
except as follows:
(1)
Where such lights are required by state or federal law.
(2)
Where such lighting is of a temporary nature including but not
limited to holiday displays and grand opening events.
(3)
Where such lighting is part of a sign approved pursuant to Article
VI.
E. Laser source light. The use of laser source light or any similar
high intensity light is prohibited.
G. Light intended to illuminate naturally occurring environmental features
including but not limited to wetlands, rivers, lakes and dedicated
open spaces shall be prohibited except as approved as part of a conditional
use grant or public lighting project approved by the Village Board.