The project included the hydrogeological analysis and the 2D hydraulic model of the valley section in correspondence of the crossing of Ufita river (Campania region, Italy) of the railway viaducts. The analysis considered several return periods, such as T=30, 100 and 300 years and, for the temporary construction phases, T=5 and 15 years.

The output consists in stormwater drainage layouts, large scale layouts for the hydraulic hazard, paying particular attention to the flood risk, of longitudinal stormwater drainage profiles, large scale layouts of catchment areas, layouts of speed and levels.

The hydraulic design includes the hydraulic works on Ufita river in correspondence of viaducts, riverbed works, and protection works.

The four viaducts consist in decks 25, 45 and 65 m long, for an overall length of 2 km. The 25 m decks are in prestressed concrete, and the longer decks for the river crossings are mixed steel-concrete structures.

Hirpinia railway station footprint is 100m x 70 m, is a reinforced concrete structure with an underground floor, a ground floor and a mezzanine level.

The design of the platforms includes a steel shelter for protection of the travelers.

The engineering services include also:

• the environmental design of the construction site, including the environmental investigation campaign;
• the management of excavated soil and rock;
• the design of the construction site, such as the temporary accesses to the sites, the yards and the definition of the logistic and infrastructural layouts of the sites;
• the MEP design (power and lighting systems, industrial systems of the buildings).

The whole design is developed according to the Building Information Modeling (BIM) using dedicated software and targeted information concepts.