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Architectural Daylighting Strategies

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Creating energy-efficient buildings can be a large task, but following these tips and tricks about daylighting can make the job easier. Learn about everything from window placement to skylights and how they can help you achieve a more efficient building.

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Architectural Daylighting Strategies

  1. 1. DAYLIGHTING STRATEGIES
  2. 2. An architect should consider the following items when designing an energy-efficient nonresidential building, regardless of size and building type.
  3. 3. Windows placed high in the wall near the ceiling provide the most daylight for any given window area, permitting daylight to penetrate more deeply into the interior. PLACE WINDOWS HIGH IN THE WALL OF EACH FLOOR
  4. 4. Because window glass has little or no resistance to heat flow, it is one of the primary sources of energy waste and discomfort. Window areas should, therefore, be kept to a reasonable minimum, justified by clearly defined needs for view, visual relief, ventilation, and/or daylighting. SIZE WINDOWS ACCORDING TO USE AND ORIENTATION
  5. 5. USE LIGHT SHELVES Light shelves are horizontal projections placed on the outside and below a window to reflect sunlight onto the interior ceiling, making it a light-reflecting surface. At the same time, the light shelf shades the lower portion of the window, reducing the amount of light near the window, which is typically overlit.
  6. 6. The result is more balanced daylighting with less glare and contrast between light levels in the interior. WITH LIGHT SHELVES WITHOUT LIGHT SHELVES
  7. 7. USE SKYLIGHTING FOR DAYLIGHTING, WITH PROPER SOLAR CONTROLS Skylighting that is properly sized and oriented is an efficient and cost-effective source of lighting. White-painted ceilings and walls further improve the efficiency. Electric lighting costs, peak demand charges, and work interruptions during power brownouts can be greatly reduced by using daylight.
  8. 8. Cost-effective, energy-efficient skylights can be small, spaced widely, with “splayed” interior light wells that help reflect and diffuse the light. WITH SKYLIGHTS WITHOUT SKYLIGHTS
  9. 9. Wiley is a registered trademark of John Wiley & Sons, Inc. Steel and glass building photos © Manuel Gutjahr/iStockphoto Learn even more about strategies for designing energy-efficient buildings with Architectural Graphic Standards Online. Visit us at graphicstandards.com.

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