The Design and Model of Daylighting Control System for Sasana Budaya Ganesha Underground Tunnel

Sasana Budaya Ganesha Institut Teknologi Bandung (Saraga ITB) Tunnel is an underground tunnel connecting ITB Campus with the Saraga Sports Center. Despite being an underground tunnel, the original design of Saraga Tunnel was to utilize daylight. It has two skylights and fitted mirrors to distribute daylight across the tunnel. In order to study the potential of the daylighting inside the tunnel, this study developed a simulation model of light distribution inside the tunnel. The model's parameters included the geometry of the tunnel; the photometric properties of inside surfaces, i.e. the reflectance, transparences, and colors; the geometry of skylight, and the resulting illuminance. This result demonstrated the potential use of daylighting control system of Saraga Tunnel.