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This book began with a critical look at existing daylight performance metrics through the lens of contemporary architecture. It established the need for new performance criteria that could account for the range of perceptual and temporal qualities within designed space and position those criteria alongside existing task-based illuminance and visual comfort metrics to provide a more holistic analysis of daylight in architecture. Through a survey of global contemporary architecture, we developed a matrix of contrast-driven ‘types’ to understand the range of daylighting strategies that exist within the language of design. These daylighting strategies reveal a diversity of perceptual effects that rely on spatial and temporal variability within the visual field. Using this typological study as context, we established three new metrics that intuitively describe the perceptual effects within each space. These metrics, spatial contrast, annual spatial contrast, and annual luminance variability, measure the spatial and temporal diversity of daylight in architecture throughout the year.
KeywordsSpatial contrast Annual spatial contrast Annual luminance variability Integrated architectural design Daylight analysis Daylight simulation framework Lightsolve
- Andersen, M., Guillemin, A., Amundadottie, M., & Rockcastle, S. (2013). Beyond illumination: An interactive simulation framework for non-visual and perceptual aspects of daylight performance. Chambery: IBPSA.Google Scholar