A Methodology of Building Code Checking System for Building Permission based on openBIM

Architectural information is managed throughout the life cycle of a building. Building information modeling (BIM) serves as a shared knowledge resource for information about a facility, forming a reliable basis for decisions during its life cycle from inception onward. BIM technology has been utilized increasingly in quantitative ways in the architecture, engineering, and construction disciplines. However, owing to increasing requirements for an improvement in qualitative factors in BIM-based design projects, it has become necessary to develop a checking and evaluation process for improvement of BIM-based design quality. The delivery of the BIM data is mandatory in advanced countries, and these countries are promoting the automated checking for BIM quality, including compliance with the building code. For example, Singapore has developed a BIM-based automated regulation checking process through the software FORNAX and has built a construction administration system, CORENET. The SMARTcodes project in the USA has structuralized the regulations of the International Code Council (ICC) and developed automatic code compliance checking systems. In particular, code checks through and automated code checking system can reduce errors, time, and the inefficient use of human resources through objective verification. The purpose of this study is to suggest methodology of building code checking system for design quality checking based on BIM. In this study, the scope of applied design quality checking is confined to building codes. The methodology of this study to achieve this purpose is as follows. (1) The authors have suggested an open BIM-based design quality checking process. The architects create open BIM data using guideline and BIM library that was developed this study. The BIM data is checked through building code checking system called KBim Assess-Lite. (2) The authors developed a logic rule-based management system called KBim Logic. This system translates Korea building code (natural language) into computer-executable rule set files. Following the logic-rule based mechanism, the building code sentences are converted into intermediate script language called KBim Code. (3) The authors developed a building code checking system called KBim Assess-Lite. This system can assess quality of the IFC-based open BIM data. Major aspect of the BIM model quality is conformance of the building code (KBim code). According to this process, prevent various problem which may occur in developing the automated design quality checking system. Consequently, the architects can achieve the set up goals much easier and faster through the developed automated design quality checking system.