![]() (3) No source of intense light or glare, such as arc welding shall be visible from any point beyond the The Illuminating Engineering Society in the current IES Lighting Handbook. Light intensity shall be measured using the procedures established by (2) No industrial or commercial use shall cause a level of illumination exceeding 0.5 footcandles in aĬontiguous or adjacent residential district. (1) All sources of illumination shall be directed and, when necessary, shielded so as not to produce directed This code does not address the issue of sky glow.ĮXCEPTIONS AND SPECIAL PROVISIONS PERTAINING TO USES, The code states that lights shall not create glare on adjacent properties and establishes an maximum level of light trespass (0.5 fc). Thanks to a Pullman resident for sending us this one. The director shall maintain a list of prequalified persons available to the public. ![]() The meter reading shall be taken by a person deemed qualified by The owner of the property on which the light source is located shall bear theīurden of proof that exterior lighting on their property meets these requirements, including the expense of a light meter reading. Exterior lighting shall be installed so that in no case shall more than one footcandle power of light five feet aboveground cross a property line in a residential zoneĪs measured by a light meter meeting the American National Standards Institute specifications for such instruments. All lighting fixtures shall be appropriate in scale, intensity, and height to No lighting shall blink, flash, or be of unusually high intensity or brightness. Exterior lighting shall be shielded or recessed so that direct glare and reflections are contained within the boundaries of the property, and shall be directed downward and away from adjoining
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