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When you want to replace or install a parking light, you must plan ahead and consider many
factors in terms of safety, visibility, installation and Maintenance. Read the
rest of this article to determine the best location for parking lights.
The main things to
consider when arranging parking lights:
Parking Light
Style
Surrounding
building
Parking lot
lighting level
Allowable height
of parking light pole
Choosing the right parking lot lights is the key to keeping the number and spacing of lights in
the parking lot to a minimum. One factor to consider when choosing a fixture is
the LER factor of the fixture. The US Department of Energy recommends a LER
rating of at least 65. To calculate the LER value of an LED, divide by: the
light output (lumens) / input power (watts) of the light fixture.
When conducting on-site surveys of parking lot lights, pay attention to the location of surrounding buildings and how the public enters and leaves the parking lot. To prevent glare, attach a hood. Using the right optics will also help minimize light intrusion
Following table
for its recommended light levels.
|
Basic |
Enhanced
Security |
Minimum Horizontal Illuminance |
0.2fc |
0.5fc |
Uniformity
Ratio |
20:1 | 15:1 |
Minimum Vertical Illuminance |
0.1fc | 0.25fc |
When adjacent to a commercial property, the lighting intensity on the property line should not exceed 0.1 foot candle, and the lighting intensity at the boundary of the residential property should not exceed 0.05 foot candle.
Many states
have listed maximum allowable heights for light poles, so they should be
considered before the design phase. The size of the parking lot will usually determine the height of the
light pole. In densely populated areas, shorter poles will ensure no glare, but
more poles are needed to provide good coverage. Uniformity without having to
worry about reducing public interaction due to glare. Designers can use glare
levels or shadow brightness to ensure that the angle of discomfort does not
exceed the standard.
Keep in mind that
the above techniques will ensure a consistent design while providing adequate
lighting safety without causing problems for the public.
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