Fire safety DSL based algebra

A complex system as the one evaluating the fire safety level, generally need the intervention of several specialists. Each one uses his own languages and own tools. To model such a system, several specific languages are needed and must be formalized and then integrated. This kind of systems can have irreversible consequences because of the human involving. To make a system sure - by the proof - the specification and composition of models/languages must be formally described and based on mathematical foundations. In this context, the paper proposes to use a formal approach based on algebraic specifications to model, formalize and compose the specific languages needed to evaluate the fire safety level in buildings.