(a) Definitions. As used herein:
(1) "Area light" means lighting fixture intended to illuminate a significant parking or pedestrian area, such as a parking lot or walkway.
(2) "Cutoff" means a lighting fixture from which no more than 2.5 percent of its lamp's intensity is emitted at or above horizontal plane drawn through the bottom of the fixture and no more than 10 percent of its lamp's intensity is emitted between 80 degrees and that horizontal plane.
(3) "Footcandle" means a unit of incident light stated in lumens per square foot and measurable with an illuminance meter, a.k.a. footcandle or light meter.
(4) "Full cutoff" means a lighting fixture from which none of its lamp's intensity is emitted at or above a horizontal plane drawn through the bottom of the fixture and no more than 10 percent of the lamp's intensity is emitted between 80 degrees and that horizontal plane.
(5) "Fully shielded" means a lighting fixture, from which, in the installed position, none of its light output, either directly from the lamp or a diffusing element, or indirectly by reflection or refraction from any part of the fixture (excepting only incidental reflections from supporting brackets or arms), is projected above a horizontal plane through the fixture's lowest light-emitting part, as determined by photometric test or certified by the manufacturer. Any structural part of the fixture providing this shielding shall be permanently affixed.
(6) "Glare" means the sensation produced by lighting that causes an annoyance, discomfort or loss in visual performance and visibility to the eye.
(7) "Illuminance" means the quantity of incident light measured in footcandles.
(8) "Light trespass" means light emitted by a lighting installation, which extends beyond the boundaries of the property on which the installation is sited.
(9) "Lumen" means the light-output rating of a lamp (light bulb), as used in the context of this section.
(10) "Luminaire" means a complete lighting unit
(11) "Shielded" means the description of a luminaire from which no direct glare is visible at normal viewing angles, by virtue of its being properly aimed, oriented, and located and properly fitted with such devices as shields, barn doors, baffles, louvers, skirts or visors.
(12) "Commercial property" means property used for commercial purposes as defined in C1, C2, C3, C4, I, Planned Development, Mixed Use Overlay Districts, and multi-family properties of four or more units.
(b) Lighting Fixture Design and Control. The following regulations are required on commercial property:
(1) Luminaires shall be of a type and design appropriate to the lighting application.
(2) For the lighting of predominantly horizontal surfaces such as, but not limited to parking areas,and pedestrian passage areas, merchandising and storage areas automotive-fuel dispensing facilities, automotive sales areas, loading docks, active and passive recreational areas, building entrances, and site entrances, luminaires shall be aimed straight down, have no uplight and shall meet IESNA full-cutoff/fully shielded criteria.
(3) For the lighting of predominantly non-horizontal tasks or surfaces such as, but not limited to, facades, landscaping, fountains, displays and statuary, when their use is specifically permitted, luminaires shall be shielded and shall be installed and aimed so as to not project their output into the windows of neighboring residences, adjacent uses, past the object being illuminated, skyward or onto a public roadway.
(4) Area light shall not be permitted where visible, during hours of darkness, from a residential use, unless fitted with a reflector or other shielding device to block direct viewing of the light source from the adjacent use.
(5) All lighting shall be aimed, located, designed, fitted and maintained so as not to present a hazard and so as not to create a light trespass by projecting or reflecting objectionable light onto a neighboring use or property.
(6) Directional luminaires such as floodlights and spotlights shall be so shielded, installed and aimed that they do not project their output onto the properties of neighboring residences, adjacent uses, past the object being illuminated, or skyward. Floodlights installed above grade shall not be aimed out more than 45 degrees from straight down. When a floodlight creates glare as viewed from an adjacent residential property, the floodlight shall be required to be re-aimed and/or fitted with a shielding device to block the view of the glare source from that property.
(7) All exterior property areas shall maintain all exterior lighting so that it complies with the following:
A. All luminaire fixtures should be installed at a height appropriate for the use.
B. All luminaire fixtures should be placed in the area of use or as near to the area of use as is reasonably possible.
C. All luminaire fixtures should be angled such that it reasonably reduces horizontal glare.
D. The luminaire should be aimed at the subject property of the horizontal plane and all reasonable efforts made to reduce glare and light trespass from the neighboring properties.
E. Full cutoff, fully shielded and internal baffling is required on all luminaire fixtures to reduce or eliminate glare and light trespass to the extent reasonably possible.
(8) Glare control shall be achieved primarily through the use of such means as cutoff fixtures, shields and baffles, and appropriate application of fixture mounting height, wattage, aiming angle and fixture placement.
(9) The level of illumination projected onto a residential use from an adjacent property shall not create a light trespass or glare as determined by reasonable person.
(c) Plan Submission. For all commercial properties where site lighting is proposed or otherwise required by the City, lighting plans shall be submitted to the Commissioner for review and approval with any preliminary development plan application or with any conditional use application. The Commissioner may also require that lighting plans be submitted for Building Permit applications or referred to Architectural Review Board for review. Lighting plans shall include:
(1) A site plan, complete with all structures, parking spaces, building entrances, traffic areas (both vehicular and pedestrian), vegetation that might interfere with lighting, and adjacent uses that might be adversely impacted by the lighting, containing a layout of all proposed fixtures by location, mounting height and type. The submission shall include, in addition to area lighting, exterior architectural, building entrance, landscape lighting, etc.
(2) A point-by-point illuminance-grid plot on 10-foot-by-10-foot centers (or as necessary for suitable legibility) of footcandles overlaid on the site plan, plotted out to 0.0 maintained footcandles, which demonstrate compliance with the light trespass, illuminance and uniformity requirements as set forth in this Section or as otherwise required by the City.
(3) Description of the proposed equipment, including fixture catalog cuts, photometrics, glare reduction devices, lamps, on/off control devices, mounting heights, pole wind-loading conformance, foundation pole details and mounting methods.
(4) Landscaping plans shall contain lighting fixture locations and shall demonstrate that the site lighting and landscaping have been coordinated to minimize conflict between vegetation and intended light distribution, both initially and at vegetation maturity.
(5) Post-approval alterations to lighting plans or intended substitutions for specified lighting equipment on the approved plan shall be submitted to the Commissioner for review and approval prior to installation. Requests for substitutions shall be accompanied by catalog cuts of the proposed equipment that demonstrate the proposed substitution is equal to or exceeds the optical performance and maintainability of the specified luminaires; and accompanied by a lighting plan, including a point-by-point plot, which demonstrates that proposed substitutions will result in a lighting design that equals or exceeds the performance of the lighting on the approved plan.
(Ord. 2-18. Passed 4-1-2019.)