The New River Gorge Bridge in West Virginia. 876 feet. Thatâs the amount of vertical space that exists between The New River Gorge Bridge and the water. Below is a tribute to natureâs wonder. Above is a modern engineering miracle. Bridge Day celebrates both, and all the space between.
A skylight providing internal illumination. Daylighting is the practice of placing windows or other openings and reflective surfaces so that during the day natural light provides effective internal lighting. Particular attention is given to daylighting while designing a building when the aim is to maximize visual comfort or to reduce energy use.
Useful Daylight Zone-is the area of space that receives 30FC (typical ambient light level for offices) from daylight alone for at least 50% of annual work hours.Essentially, this defines the area that gets enough daylight to make use of switched daylight harvesting.aylight Autonomy describes the percentage of work hours during which all or part of a building's lightings needs can be met through daylighting alone. It maximizes the amount of useful daylight, thereby minimizing the need for supplemental electric light.