The use and evaluation of a computer program for the investigation of the dayligth and sunlight performance of buldings

This paper discusses the use of the computer program DAYLIGHT, as a method of analysing and evaluating the natural lighting in buildings. The computer's design parameters and outputs are discussed in some detail, and the program is then used to examine some of the standard design criteria. The paper concludes with a case study of a primary school building to evaluate the accuracy and usefulness of the program. In this study, the output from the computer is compared with measurements taken in a model of the school tested under an artificial sky, and both these results are judged against measurements taken in the real building.