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Article 10: Definitions 32 <br />Section 10.1: Definitions <br />Outdoor Lighting, Lumen <br />A unit of luminous flux. One foot - candle is one lumen per square foot. For the purposes of this <br />Ordinance, the lumen- output values shall be the IMTIAL initial lumen output ratings of a lamp. <br />Outdoor Lighting, Luminaire <br />^ eemplete lighting system that i ^lade^ ^ lamp Ew lamps ^Na ^ fi�iy e The complete lighting unit <br />or fixture consisting of a lamp, or lamps and ballast(s) when applicable, together with the parts designed <br />to distribute the light, including reflector, lens, or diffuser to position and protect the lamps, and to connect <br />the lamps to the power supply. <br />Outdoor Lighting - Mercury Vapor Luminaries <br />Lamps within which ultraviolet and yellowish -green to blue visible light is produced by an electric <br />discharge through mercury vapor <br />Outdoor Lighting, Semi -Cutoff Fixture <br />An outdoor fixture shielded or constructed in such a manner that it emits no more than 5% of its light <br />above the horizontal plane of the fixture, and no more than 20% of its light ten degrees below the <br />horizontal plane of the fixture. <br />Outdoor Lighting — Sodium Vapor Luminaries <br />Lamps within which ultraviolet and yellowish- orange visible light is produced by an electric charge through <br />a small amount of sodium and neon gas. zu <br />Outdoor Lighting, Tube Lighting <br />Gas - filled glass tube, excluding common fluorescent tube bulbs, that becomes luminescent in a color <br />characteristic of the particular gas used, such as neon, argon, krypton, etc. <br />Outdoor Lighting, Upward <br />Projection of light above the horizontal plane. <br />Overlay Zoning District; Overlay Zone <br />A special zoning district that applies supplemental standards in addition to the underlying zoning <br />requirements. <br />Package Treatment Plant <br />Privately owned and operated sewage treatment facility. These plants are prefabricated by the <br />manufacturer and delivered as completed units to the clients. <br />Parking Deck <br />A special structure of two or more levels designed to be used for the temporary storage of motor vehicles. <br />Pedestrian /Landscape Ratio <br />This is the minimum square footage of pedestrian access and landscaped areas in a non - residential <br />development for each square foot of gross land area. <br />Pedestrian /Landscaped Space <br />" Staff modification to definition incorporating elements of from the Dark Sky model lighting ordinance as well as <br />standards from the Illuminating Engineering Society of North America [IESNA] <br />19 Staff had concerns over defining this specific classification of light source given we do not have definitions for all <br />lighting sources /fixtures. The Planning Board recommended the inclusion of the definition given they are <br />specifically prohibited from use within the UDO. <br />20 Added to address comments made at the September 5, 2012 ORC Planning Board meeting. <br />21 Definition recommended by the Planning Board at its October 7, 2009 regular meeting. <br />Orange County, North Carolina — Unified Development Ordinance Page 10 -29 <br />