This study proposes a 3D structural modeling approach based on the discretization of a 2D structural model associated with magnetic data. The approach proposed in this study requires first to identify the parameters involved in the modeling (geographical position, direction, dip direction and dip angle) and then to transform the whole 2D model into fault segments. The first discretization will allow determining the position, the direction and the dip direction of each fault segment. This discretization phase was done by coupling the Excel program to existing GIS software. The last discretization will allow evaluating the variation of inclinations along the fault segment. It required the elaboration of a depth model from the magnetic data grid. It is this model that provided all the necessary data for this last discretization, which was automated thanks to the DipAngle code developed for this study. All these discretizations have provided to the used modeler and all the databases necessary for the realization of the various models. The application of this methodology to the Central Domain of the Mbere Division has made it possible to develop different models that can be used as basic documents in exploration projects.