metaTGA - Metadata and process models for open BIM in building service engineering
Starting point / motivation
Building Information Modelling (BIM) can be regarded as a disruptive technology in the building and real estate industry and will have a great impact on all stakeholders along the building industry's value chain in the medium to long term.
BIM applies to the entire life cycle of a building. MEP (mechanical, electrical and plumbing) plays a central role in this context. Factors such as the energy consumption and operating costs of a building are fundamentally determined by the quality of MEP planning and implementation.
Studies have shown that open data interfaces and the interoperability between software tools are especially important for MEP planning. This particularly applies to small and medium-sized enterprises, which are the backbone of the Austrian building industry.
Open data exchange (Open BIM) requires standardized data models as well as clearly defined modelling and process standards. Important activities in this context are for example the Austrian BIM standard ÖNORM A 6241-2 and the related ASI property server.
The current development state shows that open BIM data models for MEP are not yet fully applicable in practical projects. This applies to the MEP data models themselves as well as to process models that describe the level of development and responsibilities for the application of MEP models in a BIM project.
Contents and goals
The objective of this research project is to design a methodology for developing data and process models and to apply them by modeling selected MEP systems. A particular focus is put on the renewable heating technologies heat pumps, solar heat and biomass as well as ventilation systems.
These technologies are important for sustainable building designs and thus play a significant role for resilient cities with high energy efficiency and high shares of renewable energy. Because of their relevance, these technologies should be an integral part of open BIM data and process models.
Requirements for BIM data and process models for MEP are compiled with stakeholder involvement. On this basis, open metadata models are developed for the technologies considered in the project by applying methods like object oriented analysis (OOA) and object oriented design (OOD).
In a next step, process models will be designed by means of the business process model and notation (BPMN) modelling language. The developed data and process models are scientifically evaluated in two pilot projects.
Expected results include a requirements list for MEP data and process models for use in BIM, open MEP data models implemented in a standard data modelling language and a process model for applying the data model in BIM projects.
The models as well as experiences from their pilot application in the two BIM projects will be disseminated by means of stakeholder workshops and publicly available reports.
Univ.-Prof. Dipl.-Ing. Dr.techn. Michael Monsberger, Graz University of Technology, Institute for Construction Management and Economics, Integrated Building Systems Work Group
Project or cooperation partners
- AIT Austrian Institute of Technology GmbH
- tbw solutions ZT GesmbH – Office for Digital Engineering
- ALLPLAN GmbH
- TBH Ingenieur GmbH