Over the last decade, digitalization has covered a wide range of business sectors resulting in an immense gain of productivity in a wide variety of industrial sectors. Although the building industry uses digital tools as well, this sector is inferior to other sectors. Especially through only using printed construction plans there is a significant information and productivity loss. Consistency of the overall project plan and construction is not given because of restricted 2D views, and with the project data exchange of only printed plans there is a high loss of information. To overcome these restrictions of 2D-planning, the concept of Building Information Modeling (BIM) was introduced. BIM is a digital display of building structure with considerable depth of information which is not just geometric information but also non-geometric information like costs or technical details. Although BIM provides a more comprehensive planning approach, it is not enough to model just the newly planned building structure itself with BIM but also the surrounding area must be taken into account. All boundary conditions like existing buildings and infrastructure, terrain, water bodies and environmentally protected areas must be considered in the modelling process. This basic data about the surrounding area can be collected with the help of geoinformation systems (GIS) providing geo data. Nevertheless, until now, the provided data and models via GIS only include mostly geometric and geographic data which is not suitable for thematic analysis and queries but are necessary for a consistent infrastructure planning to find collisions and conflicts. By the implementation of semantic 3D-cityGML-models in accordance to the CityGML Encoding Standard, describing urban environments and landscapes considering geometry, location, appearance, semantics and topology in different levels of detail and classes, the thematic analysis and queries needed for integrated GIS and BIM are generally possible. Therefore, this paper examines to which degree 3D-cityGML-models can be used as a planning tool for universal BIM infrastructure to be able to provide a universal planning foundation in the context of large universal infrastructure projects within cities. The 3D-cityGML-model, describing the surrounding area of the infrastructure project with all the relevant components for the construction planning, is built up with the help of geoinformation systems using mainly open geo data. Furthermore, this paper analyses if and how 3D-cityGML-models can be used for the modelling of different planning scenarios or construction phases. In addition, it examines how and to which use the new building structure, modeled in a BIM application, can be returned to the 3D-city-model in accordance to the CityGML-Standard. While modeling the project area surroundings in 3D with its geometry and semantics, it is examined how this planning foundation can be implemented in the planning process in BIM also looking at the interfaces between different planning applications. Eventually, the overall model is visualized with an interactive 3D-Webclient. It is expected that the integration of GIS with 3D-cityGML-models as a planning tool in BIM-based infrastructure projects can take the current isolated BIM-project infrastructure planning to a more efficient, comprehensive and consistent project planning and management level in the infrastructure building sector.     «

Over the last decade, digitalization has covered a wide range of business sectors resulting in an immense gain of productivity in a wide variety of industrial sectors. Although the building industry uses digital tools as well, this sector is inferior to other sectors. Especially through only using printed construction plans there is a significant information and productivity loss. Consistency of the overall project plan and construction is not given because of restricted 2D views, and with the p...     »