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An evaluation of the DGNB`s assessment and certification system on the sustainability of buildings - contributing to the improvement of the DGNB’s dynamic assessment system through the simplification of the evaluation matrix, by way of example of the utilisation profile Newly constructed office and administrative buildings.
The present study addresses the simplification of the evaluation matrix of the system for assessment and certification by the German Sustainable Building Council (DGNB) on „Building Sustainability“. The approach focuses on the utilisation profile Newly constructed office and administrative buildings in the system version 2015 (DGNB NBV 15 with upgrade from 15.05.2015). The utilisation profile currently includes 33 evaluation criteria. The aim of this study is to develop a method that can monitor the number of criteria in terms of quality and quantity as well as deduce dynamic proposed corrections. With the support of an empiric investigation in the area North Rhine-Westphalia studied knowledge about the certification process shall be adopted. The results provide realistic indication of user and application behaviour. The idea is to complete the mathematical construct of matrix multiplications, based on the method of the Analytical Hierarchy Process by Saaty. The deduced evaluation matrix in the paired comparisons (9-point scale) is complimented by the relative ranking (R’n). The further development supports the decision-making in terms of the reduction of number of criteria. The exemplarily developed system version NBV 17 reduces the number of criteria from currently 33, only after implementing the extended methodology, to 21; adding four criteria from the newly implied criterion “Quality of location”.
On the whole, the results, as well as the adaptation and change proposals, act as a further contribution to the international assimilation and funding of the DGNB’s assessment and certification system on the sustainability of buildings.
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KeywordsAHP Analytischer Hierarchischer Prozess Architektur Bewertungsmatrix DGNB Drei-Säulen-Modell Empirie Entscheidungsunterstützung Evaluierung Gebäudenachhaltigkeit Gewichtung Kriterien Nachhaltigkeit Paarvergleiche Zertifizierung Zertifizierungssystem
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