Abstract
The integration of building information modeling (BIM) and geographic information system (GIS) is attracting more attention than ever due to its potential benefits for both the architecture, engineering, and construction (AEC) domain and the geospatial industry. The main challenge in BIM and GIS integrated application comes from the fundamental data conversion, especially for the geometric information. BIM and GIS use different modeling paradigms to represent objects. The BIM dataset takes, for example, Industry Foundation Classes (IFC) that use solid models, such as boundary representation (B-Rep), swept solid, constructive solid geometry (CSG), and clipping, while the GIS dataset mainly uses surface models or B-Rep. The fundamental data conversion between BIM and GIS is the foundation of BIM and GIS integrated application. However, the efficiency of data conversion has been greatly impaired by the human intervention needed, especially for the conversion of the clipping geometry. The goal of this study is to automate the conversion of IFC clipping representation into the shapefile format. A process-level approach was developed with an algorithm for instantiating unbounded half spaces using B-Rep. Four IFC models were used to validate the proposed method. The results show that (1) the proposed approach can successfully automate the conversion of IFC clipping representation into the shapefile format; and (2) increasing boundary size has no effect on the file size of unbounded half spaces, but slightly increases the producing time of half spaces and processing time of building components. The efficiency of this study can be further improved by using an open-source package, instead of using the low-efficiency packages provided by ArcGIS.
Highlights
The building information modeling (BIM) and the geographic information system (GIS) emerge from different areas as follows: GIS starts as a mapping tool and is currently a comprehensive geospatial data management and analysis platform used in the geospatial industry [1] and BIM is widely used
This study proposed an approach for automatically converting Industry Foundation Classes (IFC) clipping representation to the shapefile format for the use in GIS
This study proposed to instantiate unbounded half spaces by creating boundary representation (B-Rep) that is sufficiently large in space and using an imagined boundary
Summary
The building information modeling (BIM) and the geographic information system (GIS) emerge from different areas as follows: GIS starts as a mapping tool and is currently a comprehensive geospatial data management and analysis platform used in the geospatial industry [1] and BIM is widely usedAppl. In the AEC domain, BIM and GIS construction, operation, and maintenance They have been applied to disassemble offshore have been jointly used in various stages of the building life cycle, such as planning, construction, platforms [5], build retrofit [6], green building design [7], construction site layout optimization [8], operation, and maintenance. They have been applied to disassemble offshore platforms [5], build and construction supply chain management [9]. They have been used to assess building-level flood navigation [12,13]
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