Within the sustainability arena, CO2 reduction has emerged as a key challenge for manufacturers in the fast‐moving consumer goods industry. This goal needs to be balanced against the competitive priorities of cost and responsiveness. Emissions‐reducing efforts are driven by the need to comply with expectations from industry and end customers and by opportunities for energy and cost savings. Manufacturers are now looking beyond their corporate boundaries to find new ways to reduce emissions along the supply chain. There is a need for research to address supplier selection in the face of sustainability challenges and provide insights about the factors affecting the transfer of sustainability skills between the manufacturer and its suppliers. This multiple case study investigates the factors that influence an organization's readiness to engage in a collaborative CO2 reduction management (CCRM) approach. We find that partner selection for CCRM exhibits path dependency in terms of the manufacturer's maturity level of sustainability; characteristics of key downstream customers, in turn, are shown to also impact this selection.
Holistic views of all environmental impacts for buildings such as Life Cycle Assessments (LCAs) are rarely performed. Building services are mostly included in this assessment only in a simplified way, which means that their embodied impacts are usually underestimated. Open Building Information Modeling (BIM) and Industry Foundation Classes (IFC) provide for significantly more efficient and comprehensive LCA performance. This study investigated how building services can be included in an open BIM-integrated whole-building LCA for the first time, identified challenges and showed six solution approaches. Based on the definition of 222 exchange requirements and their mapping with IFC, an example BIM model was modeled before the linking of 7312 BIM objects of building services with LCA data that were analyzed in an LCA tool. The results show that 94.5% of the BIM objects could only be linked by applying one of the six solution approaches. The main problems were due to: (1) modeling by a lack of standardization of attributes of BIM objects; (2) difficult machine readability of the building services LCA datasets as well as a general lack of these; and (3) non-standardized properties of building services and LCA specific dataset information in the IFC data format.
The new Energy Performance of Buildings Directive (EPBD) 2018 and the GebäudeEnergieGesetz (GEG) tightened the requirements for energy efficiency and the use of renewable energy sources in buildings at EU and national levels. Environmental impacts from manufacturing, dismantling and recycling of buildings are not taken into account. Green Building Certification Systems, such as the DGNB or BNB systems, are therefore the only ones that (voluntarily) set holistic, ecological requirements for buildings. Based on a Whole-Building Life Cycle Assessment, the entire building life cycle and its environmental effects are evaluated. While building services in this context are usually only included in such a simplified approach, the full scope of the produced environmental impacts are underestimated and misjudged for the reduction of emissions and other environmental impacts. This publication uses the results of a life cycle assessment of a typical office building (in Germany) to show the amount of influence building services have on environmental impacts of buildings. Furthermore the study shows an approach how the very high pro-curement and calculation effort of LCA can be reduced by linking the Building Information Modelling (BIM) Method and LCA models to enable a significantly more efficient and easier calculation process, es-pecially for building services.
Digitalization is accelerating and changing much in our lifestyles and ways of working. In the construction and building sector, this phenomenon is currently gaining acceptance through the Building Information Modeling (BIM) method. As an integral planning method for improving the quality of planning, construction and operating processes, BIM requires a starting point that is defined by demand planning. This paper focuses on recording demand planning digitally and generating it autonomously for basic planning. The aim is to provide planners with a BIM model that is generated early from user-oriented needs with in-depth information and enables considering sustainable and health planning aspects in the future. As a result, BIM and the open BIM data exchange format Industry Foundation Classes (IFC) are used to create a BIM-Model (3D Model) based on user needs, which are recorded by a web application. Thereby planners will be provided with a valuable starting and orientation basis that considers important user requirements. In doing so, maximum user satisfaction and quality will be achieved. Furthermore, communication and participation of users in the planning process will be promoted.
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