SummaryThe Industry Foundation Classes (IFC) data model developed by buildingSMART is astandardized specification for Building Information Modelling (BIM) data.
BIM manages to deal with the various building data exchange throughout its lifecycle basedon the 3D building information defined as a collection (an aggregation) of properties of object
data, such as the shape, dimension, area and volume of walls, columns, windows, and otherbuilding elements, together with their specification, costs, schedules, and facility management
information. It is also named as 4D or 5D building information model, which can be widelyused in building design, construction and facility management.
Europe and United States led the BIM research emphasized on design qualities before 2010.
This research focus on offering the solution based on IFC data application, the main objectiveof this research is to deal with the problems of building safety and security in times of disaster.
The Great East Japan Earthquake occurred in the preparation period of this research caused
serious damage because of furniture overriding, so the importance of the simulation offurniture overriding and agent movement for evacuation is emphasized again. Based on thespecification of buildingSMART, the new model view definitions (MVD-Furniture Stumble) is
proposed to integrate evacuation simulation information and BIM data. This research explains
the application of BIM data in building safety and security, which helps improve the buildingsafety.
There are 4 groups to do the studies in this research.
1. IFC Platform Construction Group
The MVD for furniture overriding is defined according to the IFC building data, furniture
shape and relevant building information, such as the total building storey number, thecoefficient of friction between furniture and floor. Based on the 3D viewer software of IFC
Viewer, the IFC platform is developed, which can not only display the 3D geometry, but also
append the information for building safety simulation. Moreover, based on the evacuation
simulation software FDS+Evac and IFC data analysis, Visual FDS is developed to evaluate
the fire safety and the impact of furniture layout on evacuation.
2. Visualization of Building Hazards GroupThe research group studies the building models’ fire safety and building flooding. According to
the visualization of flooding, smoke falling and agent movement in buildings, it is easy topredict the risk of life and properties in times of disaster. The research group also concludes-3-the building information of evacuation safety which formulates the building database for theIFC platform. Considering the future promotion of the application of building IFC data, thisgroup also studies the necessary information about the life safety in times of flooding and fire.
3. Case Study Group
This research group established two building models, A is an office building and B is a highrise mansion.
Model A is a steel structure office building with 9 floors above ground and 1 floor underground,and the total floor space of 11,000 m2. Model B is a high-rise mansion under construction inShinjuku, Tokyo, with 55 floors above ground, the building height of 180m and the total floor
space of 100,000 m2. This group extracted obtain the BIM building data in 3 residents bysimulating the daily family life.
4. Solution Proposal Group
According to the investigation conclusion of examples of hazard prediction and simulation
results calculated by the Visualization of Building Hazards Group, the evacuation scenario
analysis and the solutions for fire evacuation and earthquake in Model A and Model B are
discussed. With the application of IFC data, it is possible to deal with the complicated situation.
The building safety and security is improved with these scenario analysis.
The study of BIM and IFC was not emphasized sufficiently in Japan when this research started
in 2010. After IFC model of BIM data regulated as official international standard (ISO16739:2013) in March 2013, the advancement of IFC application will accelerate with a goodprospect. The Visual FDS and the solution for building safety and security developed in thisresearch are hoped to contribute to the reconstruction from the Great East Japan Earthquake.

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