Ökobilanzierung im Bauwesen: Mit CO2 als zweiter Währung verändern sich Bedeutung und Anwendung

LCA in construction – with carbon as second currency importance and application are envolving. For at least 15 years, Germany has had practical experience with life cycle assessment in the building sector, initially in the context of sustainability certification, but now increasingly as a basis for competition and funding. Only what can be measured can also be managed: Life cycle assessment (LCA) is used to record the energy and material flows occurring in the life cycle as well as undesirable effects on the environment. The goals include the conservation of primary raw materials and the protection of the ecosystem and the climate. Currently, interest in life cycle assessment is increasing. The focus is particularly on the global warming potential (GWP). For example, a life cycle assessment is the basis for proving the limitation of non-renewable primary energy and the GWP for the governmental Quality Label Sustainable Building (QNG) as a funding requirement. The introduction of limit values into regulatory law is being discussed. © 2023 Ernst & Sohn GmbH.