Shaft 3.3 is located between “Amba Aradam station” and “San Giovanni station“ of the C metro line of Rome. The shaft is made by three underground levels and it’s located in a garden very close to Via Sannio open marrket, on the same side of Appio square. The excavation is 25.65×64.4 square meter large. It will be supported by 1.2m thick concrete diaphragms having length of 45m. Coding performed the detailed design and Engineering services during construction for all functional, structural and architectural aspects.