Abstract
The children's playgrounds have been installed almost from the beginning when the first apartment complex was built. The brightness of a playground has not been considered in the architectural plan. The site of the playground has been chosen based on availability without making a detailed review on its daylight environment. The purpose of this study is to provide the Sky Ratio Diagram for the evaluation of daylight environment at the children's playground in apartment complexes. the Sky Ratio Diagram has 100 points, each point has a value of equal to the sky ratio 1%. Through case studies, the Sky Ratio Diagram was verified whether it could be practically applied to the actual playgrounds. This research is meaningful in that it suggests a way to quantitatively evaluate the brightness of a playground. The Sky Ratio Diagram suggested in this study can be practically used when choosing a site for a playground within an apartment complex.