Mross, Simon

Diploma Thesis:
2052

Topic:
Proposals for considering the relevance of different building components in the “DGNB Quality Standard for Circularity Indices for Buildings”

Editor:
Simon Mross

University Professor Responsible:
Univ.-Prof. Dr.-Ing. Dipl.-Wirt.-Ing. Katharina Kleinschrot
Professorship Representative: Dr.-Ing. Jan Kortmann

Supervisor:
University Supervisor: Dipl.-Ing. Aline Gruner

Editing Period:
22.05.2025 until 20.10.2025

Abstract:
The paper deals with the ‘DGNB Quality Standard for Circularity Indices for Buildings’ (DGNB-QS). Specifically, it examines the influence of the respective circularity assessment of a building component on the assessment of the entire building. This influence is determined by the normalisation factor – in the DGNB-QS, this is the mass. Based on an in-depth analysis of existing circularity measurement methods, three areas for improvement were identified in the DGNB-QS: consideration of the service life of building components, consideration of the space efficiency of a building, and adjustment of the normalisation factor. A new normalisation factor, known as the normalisation mass (NM), was developed. This is calculated by multiplying the mass by a material-specific relevance factor (R). The relevance factor indicates the relevance of a building material for the goals of the circular economy based on the sub-factors raw material consumption (TR), raw material scarcity (TK) and waste generation (TA).