Daylight Analysis

The Daylight LEED EQc8.1 Credit intends to “provide for the building occupants a connection between indoor spaces and the outdoor environment through the introduction of daylight and views into the occupied areas of the building.” In order to be awarded the IEQ 8.1 Credit, a building has to achieve a minimum daylight factor of 2% in 75% of all regularly occupied areas.

Using a computer simulation (via Radiance software) we can demonstrate that a minimum daylight illumination level of 25 foot-candles can been achieved in a minimum of 75% of all regularly occupied areas under clear sky conditions, at noon, on the equinox, at 30 inches above the floor.

Achieving the Daylight LEED credit increases energy saving values in the Energy and Atmosphere Credits largely due to electricity savings of electrical lighting that results from naturally well lit spaces. Other substantial benefits of Daylight include increased productivity, decreased absence and errors at work, reduced salaries for attractive work environments, etc.