Tag Archives: Daylight

Lighting Impacts on Circadian Rhythms

Green Building

Lighting Impacts on Circadian Rhythms

Originally published on July 11, 2016 by BNP Media through the Architectural Roofing & Waterproofing Blog. With the emergence of human health concerns, wellness, and biophilia as priorities in the building design and construction industry, the lighting profession is shifting its focus toward circadian lighting design. Light is one of the main drivers of circadian rhythms – that is, our internal clock that keeps the body’s hormones and bodily processes on a diurnal cycle, even in continuous darkness. When the….

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Is Daylight Saving Time Necessary?

Green Building

Is Daylight Saving Time Necessary?

Originally published on March 7, 2016 by BNP Media through the Architectural Roofing & Waterproofing Blog. Spring Forward, Fall Back. We know the routine well, but have you ever wondered why the United States uses Daylight Saving Time (DST)? If you ask around, you’ll hear some interesting theories: …so kids don’t have to catch the school bus in the dark?      No. …to save energy?      Not really. …to benefit farmers by giving them an extra hour of daylight?….

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Methodologies for Glare Analysis

Green Building

Methodologies for Glare Analysis

Any complete analysis of a daylit interior environment should include both the amount of light arriving to specified surfaces (such as work planes) as well as an assessment of the visual comfort of the space. Both of these factors are dynamic. Thus, they will change throughout any given time period (e.g., hour, day, week, month, season). The former can be quantified in a rather straightforward sense because it’s just physics. There is a specific amount of lumens entering a space and the characteristics of….

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