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Light reflectance value
In architecture, light reflectance value (LRV), is a measure of visible and usable light that is reflected from a surface when illuminated by a light source. The measurement is most commonly used by design professionals, such as architectural color consultants, architects, environmental graphic designers and interior designers.
LRVs are frequently reported on paint chips or paint samples. The values are used by lighting designers to determine the number and type of light fixtures needed to provide proper lighting for interior spaces.
==Guidance==
Designers of buildings must comply with the building codes applicable to the structure under consideration. Since 2004 guidance has existed on access to and use of buildings.〔(【引用サイトリンク】url=http://www.gradusworld.com/files/webfm/uploaded/Downloads_PDF%20Brochures/Catalogue%20-%20Stair%20Edgings%20&%20Floor%20Trims%20-%20Section%20-%20Specification%20Guidelines.pdf )〕 The guidance is particularly concerned with provisions to assist the disabled, including those who are visually impaired. The guidance highlights the need for certain surfaces and features to contrast visually with their surroundings. Areas of particular interest are wall to ceiling and wall to floor junctions, exposed edges of sloping floors, seating and its surroundings, leading edges of doors, door opening furniture and door surfaces, sanitary fittings and grab bars.
This is relevant to a wide range of non-residential buildings, such as hospitals, schools, hotels, theatres.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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