Lighting 10.3 Design Standards
10
I. All exterior lighting, on or off a building, shall be either amber or white in color (per the district lighting standards in chart 10.3.2.A), with the exception of low-light output (800 lumens or lower) landscaping or other decorative lighting, signage lighting, or customer entrance or service area lights aiming down and installed under a canopy or similar roof structure. 10.3.2. District Lighting Standards In Footcandles (Fc) A.
Maximum lighting levels shall adhere to the standards in the chart below. All numerical values in the chart below represent measurements in footcandles. OS, RD, GR3, GR5 GR10, UR, RMX NMX, RA-HC, UMX, NB, ICD
HB, LI, HI
Light Trespass Off Property Display/Canopy Areas
0.1
0.3
0.8
1
8
12
20
20
Parking Areas
4
4
6
6
All Other On-Site Lighting
4
6
10
10
1. The values in the preceding chart for “All Other On - Site Lighting” and “Display/Canopy Areas” shall represent the maximum point of illuminance measured at grade in footcandles. a. Exception: Outdoor display lots for vehicle sales and leasing may exceed 20 foot-candles if outdoor white lighting is cut off, leaving only security lighting that is amber in color (a temperature rating equal to or less than 2,700 Kelvin), after closing or 11:00 p.m., whichever comes earlier. 2. The values of the preceding chart for th e “Light Trespass Off Property” shall represent the maximum point of illuminance as measure at the property line in footcandles. a. Exception: In the case of buildings closer than 10 feet to the property line using only wall packs, light trespass may be greater than one foot-candle as long as the wall packs are fully shielded to direct the light downward, have a light output of 1,600 lumens or lower, and the light source (lamp) is not visible from off-site. 3. The values of the preceding chart for “Parking Areas” shall represent the average point of horizontal illuminance measured in footcandles, provided that in all districts the maximum uniformity ratio shall be 4:1 minimum to average. Pole light fixtures shall have a flat lens oriented horizontally or have shields installed on each side of the fixture to hide the lens. B. Any luminaire shall be a full-cutoff type fixture. C. Any luminaire shall be mounted at a height equal to or less than 30 feet above finished grade. D. The maximum mounting height of all outdoor lighting with a 90 or less degree cut-off fixture shall be 30 feet. The maximum mounting height of all outdoor lighting without a full 90 degree or less cut-off fixture shall be 16 feet. Poles may be mounted on a concrete pier of no more than 3 feet in height. E. Poles shall be matte or low-gloss finish to minimize glare from the light source. F. Other than floodlights, flood lamps, and spotlights all outdoor lighting fixtures of more than 2,000 lumens shall be full-cutoff type fixtures. Any fixture that is not full-cut off
10.3.3. Control of Glare – Luminaire Design Factors A.
Town of Wake Forest Unified Development Ordinance – July 19, 2022
10-3
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