Morrisville UDO - June 2017 version

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Article 5: Development Standards
Section 5.15. Exterior Lighting
5.15.4. Fixture Requirements
June 23, 2017 Morrisville, NC
Page 5-142 Unified Development Ordinance
Table
Type of Lighting
Light Level (foot-candles) [1][2] Average Light Level to
Minimum Light Level
Uniformity Ratio Maximum Average Minimum
Anchor Tenant in a Major or
Neighborhood Shopping Center
n/a 3.0 0.2 4:1
Loading Dock n/a 2.25 0.2 4:1
Nonresidential Parking Lot n/a 2.25 0.2 4:1
Vehicle Sales 15.0 n/a 0.2 5:1
Vehicular Canopy 15.0 n/a 0.2 4:1
Notes: n/a = not applicable
[1] Maximum and average light levels shall be a horizontal measurement at grade or ground level of light level points
on a ten-foot by ten-foot point-by-point layout grid in the overall lighted area. They shall be a not-to-exceed value
measured or calculated using only the area of the site intended to receive illumination.
[2] Measurements and calculations for a new system (after 100 hours of burn-in) shall be multiplied by a maintenance
factor of not greater than 0.85 foot-candles to determine compliance with the standards in this table.
(Ord. No. 2016-001, 05/10/2016)
5.15.4. Fixture Requirements
A. Building Exterior
All fixtures designed to highlight
building elements, entrances, signs, or
other distinctive architectural features
shall be affixed to the building where
possible. (See Figure Building
Exterior Fixtures.)
Fixtures shall be designed to illuminate
the building, entrances, walkways or
wall-mounted fascia signs.
All wall packs shall be located at non-
public entrances only.
All High Intensity Discharge (HID) and Light Emitting Diode (LED) wall packs shall be full cutoff.
All fixtures should be mounted above the wall-mounted fascia sign whenever possible.
All fixtures shall be directed downward rather than upward, to the extent practicable. When
upward aiming is used, placing low wattage fixtures with shields as needed close to the building
to graze the facade is encouraged to minimize reflected light from windows and other surfaces
that would be present from a flood design.
The following fixtures shall not be permitted:
a. Fixtures attached to poles designed to illuminate the exterior of a building;
b. Neon lights or lights that emit a color;
c. Fixtures that create off-site glare;
d. Fixtures that flicker, rotate, or flash;
e. Flood lights;
f. Fixtures designed to attract attention to themselves; or
g. Fixtures deemed architecturally non-compatible by the Planning Director.
Figure Building Exterior Fixtures.