Tenley-Friendship Neighborhood Library

Washington, District of Columbia
United States

Electric and daylighting designs have been fully integrated into the Tenley-Friendship Branch Library to create a building that uses daylight as the primary source of illumination, maximizing sustainability and reducing maintenance needs.

Various studies were conducted on the angle of the exterior fins and the size of the perforations in order to optimize reflected light. Inside the building, electric lights are closely integrated with the structural system and window orientation, allowing them to dim in response to the natural light and create a comfortable and more realistic environment. The daylighting team specified and commissioned all lighting controls, including the daylight harvesting system.