For the effective planning of buildings, Building Information Modeling (BIM) is already being used in practice. However, in some cases it can be very expensive to model large models with very high accuracy. This is where parametric modeling comes into play, which can be very well used, especially when using visual programming lan-guages. There is a trend towards visual programming, especially for students with lit-tle programming skills (Preidel et al. 2017, p. 9). This thesis deals with parametric modeling of car parks using Tekla Structures and Grasshopper 3D. At the same time, to create a basic model within a very short time the building system has to be mod-eled high parameterized. It should be determined based on this model, if and how this interface can be applied in a company. The challange of this thesis is to prepare this interface so far that the user does not need any previous knowledge in visual programming or the interface itself. First, the background to Building Information Modeling and Parametric Modeling will be presented, followed by the structural strengths and weaknesses of visual programming languages. Since this thesis was developed in cooperation with Max Bögl GmbH, the following chapter describes the initial situation, such as the existing structures and procedures for planning car parks. It also analyzes a failed attempt to achieve such rapid model generation and looks for possibilities to avoid the errors contained therein. Next, the interface between Tekla Structures and Grasshopper 3D will be scrutinized to identify and mitigate their week-nesses. To do this, one has to switch to various programming languages, such as Visual Basic for Applications (VBA) or batch files. This enables to use the interface for persons with limited knowledge. However, the developer must be well-versed in programming. In addition, the respective building system must already be high stand-ardized and must have a set of pre-modeled components.     «

For the effective planning of buildings, Building Information Modeling (BIM) is already being used in practice. However, in some cases it can be very expensive to model large models with very high accuracy. This is where parametric modeling comes into play, which can be very well used, especially when using visual programming lan-guages. There is a trend towards visual programming, especially for students with lit-tle programming skills (Preidel et al. 2017, p. 9). This thesis deals with paramet...     »