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Harmonised Building Information Speedway for Energy-Efficient Renovation

Periodic Reporting for period 1 - BIM-SPEED (Harmonised Building Information Speedway for Energy-Efficient Renovation)

Reporting period: 2018-11-01 to 2020-04-30

To support renovation and asset management of existing residential building stocks, BIM is a viable solution. The BIM-Speed consortium members have proven prior to the project that the energy efficiency of the existing building stock can be significantly, by reducing the planning and execution time and costs of renovation projects: the application BIM can reduce the time to acquire data about an existing building by 50%, the time required to conceptually design renovation solutions by 25%, the time for detailed engineering of the solution by 33%, and the time to execute the renovation work by 30%, and can reduce the costs for renovation projects by approximately 30%. Despite these proven benefits, so far, it is not clear how to implement BIM within a holistic approach throughout an entire project and across all stakeholders involved in a project. Technically, it is also not yet understood how such a holistic approach can be supported by a central BIM platform. It is the goal of the BIM-Speed project to address and solve the two above mentioned problems. This will be achieved by a concerted research and innovation effort that develops the required process-related and technology-related knowledge and accordingly provides a cloud-based and affordable BIM platform that can interoperate with a set of BIM tools. Together the process knowledge and the supporting platform can then be used to implement BIM holistically on any residential renovation project and, in turn, will make BIM based renovation available widely across the entire European Union. This wide scale implementation can provide a significant stepping stone towards the requirements to quickly and deeply (60% improved energy used) renovate the European Building stock at large.
The BIM-SPEED project launched a novel BIM cloud platform and some interoperability solutions providing key BIM tools have been tested, such as possibilities for automated model checking.
State-of-the-art procedures and software tools for as-built data acquisition from all relevant sources are now adapted on 13 demonstration projects, including laser scanning, thermal scanning, acoustic scanning, and measuring of occupancy and consumption behavior. Advanced methods to collect information about thermal bridges or HVAC equipment specifications have been explored. Methods for transforming the collected data to BIM models and further to Building Energy Models (BEM) have been devised. Advanced analytical modeling methods have been derived to predict the performance of buildings with respect to their acoustic, lighting, air comfort, and overall energy related characteristics. These analytical methods start with a procedure to establish a sound baseline for the existing performance of a building before renovation that will allow for the detailed comparison of design alternatives during renovation design. To store these data initial BIM Family Ontologies for materials, components, HVAC equipment have been defined that also can support downstream process in renovation planning and execution.
Furthermore, an advanced renovation decision making process have been designed to make use of improved information that allows to consider multiple criteria and is based on a set of carefully designed key performance indicators. The decision-making procedures are based on an intensive database of BIM application use cases for renovation projects that has been developed.
We established a Community of Practice and an international Advisory Board that already reviewed results and provided important recommendations. Furthermore, an initial plan for setting up a European competition for BIM supported building renovation has been devised.
BIM-Speed will provide an open BIM-platform for harmonizing digital information across all phases in the life-cycle of a renovation project. The platform will support the interoperability between existing building information, BIM product databases, design analysis tools, and asset management software. The BIM platform will provide possibilities for model versioning, level of detail (LOD) management, and advanced semantical model checking.
The platform’s workflows will be structured on a new LOD philosophy targeted for renovation projects. The new LOD process philosophy will depart from the current LOD thinking that assumes a sequential increase of model information towards a philosophy that assumes a high information level at the start of renovation project about the existing building, to rather coarse building information that is required for the performance analysis of renovation options, to the very detail, but object specific LOD that is required during the execution of renovation activities, to the relatively coarse information required to track a building’s performance over its use life.
For each of these phases, BIM-Speed will provide a set of demonstrated use cases for BIM application that can be interoperably combined to support the overall renovation life-cycle. During building condition assessment, BIM-Speed will provide automated identification of existing building components and HVAC systems to accelerate the diagnostics of the current defects or issues. To integrate the condition assessment methods within the renovation life-cycle advanced Scan2BIM methods will be developed. BIM-Speed will also provide advanced methods for building performance analysis to support choosing the most energy efficient and financially viable renovation option that will optimize the comfort of a building’s occupants after renovation. Advanced methods for BIM2BEM conversion will be designed that allow for the seamless data flow between information from the condition assessment phase to advanced energy performance analysis tools required in this phase. To support the execution of renovation activities, BIM-Speed will develop targeted BIM implementation plans and possibilities for the support of renovation work planning with virtual and augmented reality. To support the ongoing monitoring of buildings after renovation BIM-Speed will design an innovative monitoring approach for building performance and develop a new BIM passport concept that allows to structurally and transparently store building information over long time spans.
The above workflow will be supported by the development of a set of targeted ontologies clearly describing the knowledge professionals need in each of the stages to ensure that accurate and adequate information can be provided throughout. BIM-Speed will also develop a multi-criteria decision-making routine that allows all stakeholders within a renovation project to decide upon the best approach for a specific building. All BIM-Speed innovations will be strongly demonstrated on 13 renovation projects across Europe and will be tested on a large scale within a European wide renovation project competition.