BIM creates added value over the entire life cycle of a structure
Building Information Modeling is based on the continuous use of a digital building model over the entire life cycle of a structure, which extends from the initial idea, through planning and execution, to management and finally to deconstruction. By consistently considering all phases and the associated interfaces, information losses are avoided. Thus, the information content grows continuously in the course of the project. The central element here is a so-called Building Information Model (BIM model for short). A Building Information Model is an object-based 3D model that, in addition to its three-dimensional geometric characteristics, also contains non-geometric additional information such as type information, technical properties or costs. Due to its structure, 2D plans can be derived from the BIM model, quantity lists can be output, simulations and calculations can be performed, and visualizations can be created. In addition, the BIM model can be used directly for facility management after construction.
BIM increases the quality of planning
During the planning phase, each specialist planner creates his own specialist model. By combining the individual specialist models, a so-called coordination model is created. This model is used to coordinate the individual specialist planners and to check for collisions between the trades. In this way, BIM increases cooperation between the specialist planners and makes it possible to identify and rectify planning errors in good time.
BIM improves collaboration
BIM also means the consistent digital management of 3D specialist models and documents within a common data environment (CDE). Both data exchange and communication between project participants take place within the common data environment. This means that all project participants have access to the latest data and information at all times.
Fallstudie aus der Praxis
-
Herausforderung
Wolff & Müller is an innovative construction company that has been working on the digitization of its processes for a long time. BIM is at the heart of its digitization strategy: Since the beginning of 2020, every building construction project in the shell construction phase has been handled with BIM. Wolff & Müller has defined various BIM use cases for the different phases of a construction project. For example, the company derives the material quantities for tendering and awarding the various trades from the building data model, creates automated schedules and simulates the construction process. The BIM method is also used to check the target/actual condition of the shell construction and to document defects.
In the bidding phase, Wolff & Müller usually only has 2D plan documents available. In the construction phase, too, there is often no BIM-based planning on the part of the client.
Consequently, the challenge for Wuttke Ingenieure was to develop a workflow that enables the effective creation of a BIM model from the 2D planning, according to Wolff + Müller's specifications. -
Lösung
The level of development, i.e. the geometric degree of accuracy and the information content of the model elements, are defined at Wolff & Müller by a modeling guideline and a BIM information requirement guideline. In addition, a detailed component catalog already exists.
After the 2D planning has been sent to Wuttke Ingenieure, the two companies agree on the scope of the modeling at short notice and agree on a delivery date. Subsequently, the modeling is carried out in Revit according to the aforementioned specifications and with the help of the component catalog. In the next step, the BIM model is checked internally for compliance with the specifications. If the check is successful, delivery follows in IFC format and in native rvt format. Quality assurance also takes place at Wolff & Müller - it ensures that all planned use cases can be implemented with the model created. -
Ergebnis
The result is a BIM model according to Wolff & Müller's specifications that can be used for exact and automated quantity takeoff and cost determination as well as for construction process simulations and other use cases.
Das sagt 2D to BIM für Wolff & Müller:
„Development of a workflow that enables the effective creation of a BIM model from 2D planning.“
