Abstract
It has a big influence on energy conservation and a comfortable indoor environment by effective use of a natural lighting in buildings. It is important that forecasting the daylight environment and examining it from an initial design stage. In this research, the result of daylight factor obtained by ECOTECT software (daylight environment simulation software), the experiment with a model, the simple calculation method, and the actual measurement in a building, were compared. The case study building is the JIYU GAKUEN MYONICHIKAN of F.L Wright designed, and measurement and simulation conducted in the dining room conference room and large hall.
