A digital tool for life cycle assessment in construction projects

The building and construction industry is responsible for around 40% of global greenhouse gas emissions, driving the urgent need for new regulations. As such, the life cycle assessment (LCA) methodology has become fundamental for evaluating environmental impacts. Despite the need for digital tools to support environmental performance evaluations, the lack of guidance on developing such tools hinders their implementation. This article presents an automated configuration approach to develop digital tools in construction, which facilitates the proactive comparison of design choices and reduces CO 2 emissions. We demonstrate its application by implementing it at Heidelberg Materials Cement Sverige in Sweden. The results reveal that the LCA digital tool influences decision-making and efficiently quantifies global warming potential in the early project stages and reduces product-related CO 2 emissions by up to 40%. Furthermore, the findings highlight greater accuracy in LCA calculations compared to current manual methods and quicker design iterations thanks to real-time information. • Implementing an LCA digital tool can cut CO 2 emissions by up to 40% in construction projects. • Proactive decisions in the early design phase lead to reduced emissions in the life cycles of the construction project. • An LCA digital tool facilitates environmental performance evaluation and reporting of construction projects. • Limited guidance on developing digital tools for life cycle assessments hinders their development. • A case study demonstrated that an LCA digital tool benefits construction professionals.