The following thesis deals with BIM methodology implementation in Taormina underground railway station. The thesis is focused on the modelling of the Mechanical, Electrical and Plumbing equipment (MEP). The main goal of the thesis is to elaborate a model that follows as accurate as possible and finally propose a framework of the Building Information Modelling (BIM) - Building Management Systems (BMS) data conversion method to open JSON database in order to improve the handling and storage of the building data. So, the objective is after modeling the components of elements, try to understand how to make the model available for the interaction with BMS systems.