Abstract
The building permission process is to a large extent an analogue process where much information is handled in paper format or as pdf files. With the ongoing digitalisation in society, there is a potential to automate this process by integrating Building Information Models (BIM) of planned buildings and geospatial data to check if a building conforms to the building permission regulations. In this study, an inventory of which regulations in the (Swedish) detailed development plans that can be automatically checked or supported by 3D visualisation was conducted. Then, two of these regulations, the building height and the building footprint area, were studied in detail to find to which extent they can be automatically checked by integration of BIM and geospatial data. In addition, a feasibility study of one visual criterion was conducted. One concern when automating the building permission process is the variability of content within the Industry Foundation Classes (IFC) data model. Variations in modelling methods and model content leads to differences in IFC models’ content and structure; these differences complicate automated processes. To facilitate automated processes, requirements on the production of IFC models for building permission applications could be defined in the form of model view definitions or delivery specifications.
Highlights
IntroductionDigitalisation is manifesting itself in many process-oriented fields including urban planning and building permission processes
Digitalisation is currently one of the major driving forces in society
The workflow of the method is illustrated in Figure 3: first the Building Information Models (BIM) model was transformed from Industry Foundation Classes (IFC) to a LOD3 building model with CityGML surface geometries but with attributes tailored for the building height calculations; the ground plane was derived by integrating the LOD3 building model and a Digital Elevation Model (DEM); in the step the building height was calculated; and the building height was compared with the maximum allowed building height according to the detailed development plan
Summary
Digitalisation is manifesting itself in many process-oriented fields including urban planning and building permission processes. The planning and building permission processes are characterised by a large number of involved actors both from industry and authorities. To make these processes efficient, in a digital society, there is a need to exchange and integrate digital information between actors as well as between processes. To realise this exchange technical, legal as well as business aspects must be considered. The technical issues associated with the building permission process are in focus
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