The new project to extend Fiumicino airport includes all the architectural, structural and system parts in all its mechanical and electrical components. The area of interest for this project is approximately 132,000 square meters. Specifically, the BIM model planning and management process was developed in collaboration with other operators, adopting cutting-edge information management facilities. In the construction process, La SIA was involved in the modeling of all the systems serving the entire structure, in the design and construction phase, up to the development of the LOD 500 (as-built) models, dividing the work into a series of models related to the part of special systems (CCTV systems, access control systems), electrical systems (general lighting system, evacuation systems and emergency exit signs, elevators, audio-visual systems, fire prevention systems), mechanical systems (M / R air ducts, diffusers, plenums, fire-shutters, winter and summer air-conditioning), special waste disposal systems (aircraft fuel loading and unloading, oily liquid disposal and waste water).