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This study ranges from planning phase to the detailed design phase of steel box girder bridge and proposes ways to generate sem antic information of components through Industry Foundation Classes (IFC), a data model for Building Information Modeling (BIM). The classification of components of steel box girder bridge was performed to define information items required for identifying semantic information based on IFC, and spatial information items based on topology and physical information items based on functions of components were classified to create additional properties that does not support IFC by applying user-defined property set with in the IFC framework. Steel box girder bridge information model based on IFC was implemented through BIM software and semantic information input interface, which was developed in this study to examine the effectiveness of the additionally created user-defined property. Furthermore, the quantity take-off of components was performed through information model of steel box girder bridge, and the applicability of the proposed method was tested by comparing the quantity take-off based on design document with the result.Key words : Steel box girder bridge, Building Information Modeling (BIM), Industry Foundation Classes (IFC), IFC user-defined property set, Semantic information, Bridge information modeling         , Building Information Modeling (BIM)    Industry Foundation Classes (IFC)         . IFC             ,            IFC       IFC     .         BIM           IFC   ,           .  IFC         ,                      . : , Building Information Modeling (BIM), Industry Foundation Classes (IFC), IFC   , ,  Information Technology

IFC Property Set-based Approach for Generating Semantic Information of Steel Box Girder Bridge Components