[with Ihab Elzeyadi, Patrick Madulid + Ling Tan]

Daylighting strategies are becoming more commonly used in contemporary school buildings. Studies have shownthat these techniques result in improvements of occupant satisfaction and energy performance for buildings. Effective use of glazing can create a strong connection to the natural environment surrounding a building, thus improving the indoor environment. Additionally, sunlight allowed in the building reduces the need for electric lighting, consequently reducing the electric load of the building. If not properly designed; however, daylighting strategies can create excessive illuminance ratio situations, which is the definition of glare. This condition leads
to visual discomfort for occupants.

This paper studies glare levels at the Rosa Parks Elementary School in Portland, Oregon. The study involved selecting and studying four classrooms the building using high dynamic range (HDR) imaging to determine the various levels of light from both the students’ and teachers’ perspectives.

The intent of this paper is to measure illuminance ratios in a highly daylit school. With this information we can assess whether Illuminating Engineering Society of North America (IESNA) standards for visual comfort have been met while comparing the students’ views to the teachers’ views. While the benefits of daylighting are clear, it is extremely important to investigate potential pitfalls of the strategy so that design professionals can implement the techniques responsibly.