Sustainability certification of construction products through BIM

Sustainability certification of construction products is a key issue to be managed and controlled during the construction phase, in order to implement design choices and reduce buildings impact on the environment. Within this context, sustainability assessment protocols play an important role, since they provide a systematic approach for the sustainability rating of the building. The aim of this research is to define a BIM-based methodology to automate the sustainability certification process in construction phase. According to the proposed methodology, the contractor proposes a building component whose technical data are uploaded to a Document Management System (DMS) used as Common Data Environment (CDE). If the component passes a set of semi-automated authorisation steps, compliant with the work supervisor's, client's, and sustainability accredited professional's needs, then it is uploaded to the BIM Model. The case study (an office building in Italy) confirmed that the proposed methodology allows to achieve a higher efficiency, minimizing the certification times and efforts. Nevertheless, this methodology should be validated in further case studies. Moreover, it may be improved and further automated to cope with product dictionaries and templates under development in CEN technical committee 442.