Article 5: Development Standards
Section 5.15. Exterior Lighting
5.15.4. Fixture Requirements
Morrisville, NC
June 23, 2017
Unified Development Ordinance
Page 5-143
The color and style of the fixture shall complement the architectural character of the building.
B.
Canopies and Awnings
All fixtures shall be designed to illuminate the underside
of a canopy, including nonresidential canopies, or
awning.
Fixtures shall be:
a.
Recessed fixtures incorporating a lens cover that is
either recessed or flush with the bottom surface
(ceiling) of the canopy or awning that provides full
cutoff light distribution. (See Figure
5.15.4.C:Recessed Lighting Fixtures.); or
b.
Surface mounted fixtures incorporating a flat glass that provides a full cutoff or fully shielded
light distribution
Fixtures shall be low wattage (100 watts or less for HPS or MH, and 1000 lumens of less for LED).
The following fixtures shall not be permitted:
a.
Indirect lighting that is beamed upward to reflect the underside of the canopy or awning;
b.
Fixtures that do not provide a fully-shielded light distribution; and
c.
Other fixtures deemed architecturally non-compatible by the Planning Director.
The color and style of the fixture shall complement the architectural character of the building.
Light levels for nonresidential canopies shall comply with the standards in Section
5.15.3, Parking and Outdoor Lighting Light Levels.(Ord. No. 2015-002, 04/29/2015)
C.
Uncovered Parking and Drive Aisles
All fixtures shall be designed to illuminate the parking area or drive aisles.
Fixtures mounted higher than 20 feet above ground level shall have a full cutoff light distribution.
Fixtures mounted at 20 feet or less shall have a full cutoff light distribution, see Figure
5.15.4.C:Non-Cutoff Fixture, or shall meet all of the following criteria to diffuse light and reduce glare:
a.
The Illuminating Engineering Society of North America (IESNA) cutoff classification for the
fixture shall be cutoff, semi-cutoff or non-cutoff.
b.
The maximum initial lumens generated by each fixture shall be 9500
initial lamp lumens or less.
c.
The outer lamp envelope for medium based metal halide lamps shall
be coated with an internal white frosting.
d.
Metal halide fixtures shall be equipped with:
(1)
An internal “jelly jar” refractive lens;
(2)
A diffuse outer lens; or
(3)
A wide-body refractive globe as defined i
n Section 11.5, Terms and Uses Defined.e.
The top of the fixture shall be capped.
The following fixtures shall not be permitted:
Figure
5.15.4.C:Recessed Lighting Fixtures.
Figure
5.15.4.C:Non-
Cutoff Fixture.