In France, after several years of hesitation in defining concrete ways of working to implement land-use management projects, practitioners have reached a general consensus concerning the need to use concerted approaches. In the literature, these approaches are usually studied as negotiation procedures between actors. In this article, the author develops an analytical framework drawn up in terms of project design processes. This analytical framework is applied to the case of a fire prevention operation (Cevennes-France). The results bring to light the need to develop common working procedures. Then, these results, and the pertinence and limits of the interpretation framework, are discussed.