Morrisville UDO - June 2017 version

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Article 11: Interpretation and Definitions
Section 11.5. Terms and Uses Defined
11.4.2. Exceptions and Variations
June 23, 2017 Morrisville, NC
Page 11-44 Unified Development Ordinance
IESNA
The Illuminating Engineering Society of North America, a non-profit professional organization of lighting
specialists that has established recommended design standards for various lighting applications.
ILLICIT CONNECTION
Any unlawful connection that allows the discharge of non-stormwater to the stormwater conveyance
system or waters of the state.
ILLICIT DISCHARGE
Any unlawful disposal, placement, emptying, dumping, spillage, leakage, pumping, pouring, emission, or
other discharge of any substance other than stormwater into a stormwater conveyance, the waters of the
state, or upon the land in manner and amount that the substance is likely to reach a stormwater
conveyance or the waters of the state.
ILLUMINANCE
The amount of light falling on a surface as measured in lux or foot-candles.
ILLUMINATED SIGN
See Sign, Illuminated.
INDUSTRIAL ASSEMBLY, HEAVY
The fitting or joining of parts of a mechanism by means of fasteners, nuts and bolts, screws, glue,
welding, or other similar technique—but not including the construction, stamping, or reshaping of any of
the component parts. Heavy industrial assembly uses are distinguished from light industrial assembly uses
by their potential for off-site impacts, not necessarily being entirely within an enclosed building, and not
being limited in the extent of outdoor storage involved.
INDUSTRIAL ASSEMBLY, LIGHT
The fitting or joining of parts of a mechanism by means of fasteners, nuts and bolts, screws, glue, or
other similar technique that ordinarily do not create noise, smoke, fumes, odors, glare, or health or
safety hazards outside of the lot on which the use is located—but not including the construction,
stamping, or reshaping of any of the component parts. Light industrial assembly uses are conducted
entirely within enclosed buildings, but may include areas used for outdoor storage of goods and
materials that do not exceed 25 percent of the combined floor area of all buildings on the lot.
INDUSTRIAL EQUIPMENT SALES AND RENTAL
An establishment primarily engaged in the sale and rental of tools, trucks, tractors, construction
equipment, agricultural implements, and similar industrial equipment.
INDUSTRIAL PARK
A development containing three or more separate buildings used for industrial purposes that is
designed, constructed, and operated on an integrated and coordinated basis. Examples of existing
Industrial Parks in Morrisville include Cedar Fork Industrial Park and Southport.
INDUSTRIAL USE OR DEVELOPMENT
Development whose primary use(s) is one (or more) of the principal use categories and use types listed
under the Industrial Uses classification in Article 4: Use Standards, and as described in Sectio