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BiRd-sAFe Building guidelines 25 <br />ConsideR inteRioR LiGht tResPAss <br />Light trespass from within buildings can be reduced through design and <br />operational changes. <br /> ƒdesign lights to shut off using automatic controls, including photo- <br />sensors, infrared and motion detectors. These devices generally pay for <br />themselves in energy savings within one year. <br /> ƒreduce the need for extensive overhead lighting. <br /> ƒencourage the use of localized task lighting and shades. <br /> ƒreduce perimeter lighting and/or draw shades wherever possible. <br />PReFeRRed disCouRAGed <br />Preferred lighting designs project <br />light downward, reducing waste <br />and light pollution. <br />discouraged lighting designs cause <br />spill light to be directed into the <br />sky where it is not needed. <br />L ee <br />d <br />WAsted LiGht <br />Light pollution is <br />largely the result of <br />bad lighting design, <br />which allows artificial <br />light to shine outward <br />and upward into the <br />sky, where it’s not <br />wanted, instead of <br />focusing it downward, <br />where it is. <br />National Geographic, <br />November 2008 <br /> <br /> <br /> <br />Coordinate with Leed Credits <br />SS 8.0 Light Pollution reduction <br />eQ 6.1 Controllability of Systems: Lighting <br />ea 1 Optimize energy Performance