Manfred Hegger is Prof. Dipl.-Ing. M. Econ Architekt in the Department of Design and Energy-Efficient Construction at the TU in Darmstadt; Volker Auch-Schwelk is Dipl.-Ing. Architekt in the Department of Design and Building Theory at the TU in Darmstadt; Matthias Fuchs is Dipl.-Ing. Architekt in the Department of Design and Energy-Efficient Construction at the TU in Darmstadt; Thorsten Rosenkranz is Dipl.-Ing. in the Department of Design and Energy-Efficient Construction at the TU in Darmstadt;