Building form generation based on multiple performance envelopes

The use of multiple performance envelopes in a generative, non linear architectural design process is discussed. A Generative Performance Oriented Design model (GenPOD) which allows generating architectural initial form using a negotiation morphing process of several performance envelopes is presented. The suggested form generation process is parametric and iterative. It allows numerous rounds of generation using different performance envelopes. It suggests a method that allows combining information on various types including quantitative performances, programmatic demands and designer's preferences in an integral generative process that influence selected parts or the entire generated architectural form. The GenPOD model is demonstrated by a practical design case study scenario of an office building. It argues that since the initial form is generated using performance envelopes it adheres by definition to the performances that were used in its generation process and does not necessitate an "after the fact" performance simulation and evaluation processes. Therefore a form that was generated in this process embeds a higher level of information on performance aspects.