PROBLEMS OF CALCULATING THE CARBON FOOTPRINT IN SCOPE 3 USING BIM

Abstract

The article presents the requirements of the EU EPBD (Energy Performance of Buildings Directive) for counting the carbon footprint (especially in Scope 3) and including it in construction projects from 2030. The obligation to count the carbon footprint will burden mainly designers, who are increasingly using BIM (Building Information Modelling) in the design process. Performing analysis and calculation of the carbon footprint in BIM models is hampered by the lack of nongraphical information on the subject in library components. The paper explains the concept of CO2 in 3 scope, also discusses currently available tools for counting the carbon footprint, and examines how many components available on the Internet already contain non-graphical information on emissions, as well as ideas for implementing this directive. The advantages and disadvantages of these approaches were presented from the perspective of various stakeholders in the planning and investment and construction processes. The aim of the paper was to present possible solutions, ensuring compliance with the EU directive by proposing specific techniques, enabling the calculation of the Scope 3 carbon footprint, using BIM. In addition to a review of existing ideas, an authorial proposal for a national repository of carbon footprint information taking into account all stakeholders was presented.