ABSTRACT

Atria can provide excellent daylighting to buildings, but several steps are critical to achieve success. First, the size and shape of the atrium must be designed in relationship to the floor area where daylight is required. Second, an atrium can provide functional illumination to spaces within and adjacent to it. The second goal is more difficult to achieve than the first, and accomplishing both is difficult still. It is important to note that both goals are meaningful and it is possible to have either one without the other. This pattern analysis explores the size and shape of an atrium design for a two-story building using the Center for Advanced Energy Studies in Idaho Falls. It includes an investigation of the width of the atrium, the apertures, and the inclusion of light redirecting elements. Direct sun is limited to the circulation area by an external shading device. More building is put into the daylight by widening the throat of the atrium.