Multicriteria and multiactors aspects of an interactive tool aiding to sketch the building envelope during the first stages of the architectural design

The main objective of the present study is to introduce a rational method of aiding to design the envelope of a building, during the sketch design. The design method has for both objectives the respect of building costs (for the construction itself and in use), and the improvement of the energy performance.

In the multicriteria and multiactors context, this interactive tool is using decision-making aids, in order to improve the architectural response to the client’s and regulations requirements, while aiding:
- the project authors in their conception tasks, by making up the project architectural forces, in accordance with the actors’ objectives;
- and the client in his participation in the multiple partners negotiation.