Automatic Calculation Of A New China Glare Index

Lighting simulation is widely accepted and used to evaluate lighting performance including glare metrics. Digital technologies such as Computer Aided Design (CAD) and Building Information Modeling (BIM) can ideally reduce time consuming manual efforts in glare evaluation workflows and is commonly used to achieve automatic workflows. However, varying BIM standards and information interoperability presents challenges when new metrics are introduced and existing tools can no longer achieve automatic workflows. Using a case study of the new China daylighting glare metric, we discuss the gaps in current software tools and present a new prototypical software to automate the calculation of the China Daylight Glare Index (DGIChina). Besides practical usage in industry, the new software facilitates technical investigations and clarifications for DGIChina, and discussions for future developments in BIM necessary for practical industry usage.