Abstract:  
           
          Beyond the classical planning goals, design processes for sustainable 
          buildings feature a high number of integrated planning 
          objectives that link economical, ecological and socio-cultural 
          aspects. 
          With increasing demands on building performance, the number of tools 
          for evaluation, prediction and simulation of the energy, cost and emissions 
          efficiency is rising, as is the number of experts and the relevant 
          professional languages applied in their planning processes. Therefore 
          we argue that the design and planning processes for sustainable buildings 
          represent dynamic social systems characterised by a high level of 
          complexity. The communication and decision making mechanisms as 
          well as the organisational structures used in the planning processes 
          deserve particular interest as they directly influence the achievement 
          of the desired building performance. This paper presents the interdisciplinary 
          research project:”Cost-Benefits of Integrated Planning,” 
          (Co_Be) and the experimental study conducted within this framework. 
          This experiment was organised as a student-competition role-play for 
          the design of a temporary smoothie-bar in order to compare the integrated 
          with the traditionally sequential planning practice. Preliminary 
          qualitative and quantitative results of this experiment are provided. 
          Keywords: 
             
            Integral design,
            Integral Planning, 
            Sustainable Building, 
            Planning Process
            Analyses 
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