Interactive tool aiding the actors involved in a building project, to sketch the envelope during the preliminary stages of the design, while taking into account their own objectives, in a multicriteria and multiactors approach

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

In respect of the multicriteria and multiactors context of any building project, an interactive tool is being developed, which is using decision-making aids, in order to improve the architectural response to the client’s and regulations requirements, while aiding;
- the client: in the expression of his requirements and in his participation to the multiple partners negotiation;
- the project authors: in their elaboration of the parametric and graphic forces of the architectural project, they can develop in accordance with the actors’ objectives.

Permanently informed about the project performances, the user may go, as he pleases, in the parametric or in the graphic module, in order to reach the most preferred compromise.