Optimum Design Parameters of Box Window DSF Office at Different Glazing Types under Sub Interval of Intermediate Sky Conditions (20-40 klux)O.K Elayeb, M.A. Alghoul, K. Sopian and N.G. KhritaE3S Web Conf., 23 (2017) 05003DOI: https://doi.org/10.1051/e3sconf/20172305003