Roofing interventions in the Pompeii tragic poet house

The structural restoration interventions in the archaeological site of Pompeii have been performed since the beginning of excavation in the area. In the last century the old wooden roofs erected in the late 1800s were replaced with concrete structures similar to the old ones, realized after the Second World War. A systematic study of these structures is lacking, despite the number and the significant role they play in the stress state of the ancient masonry. The structural role of these concrete roofing structures in the Pompeii buildings and atrium and in the suburban Villas (Oplontis and Villa dei Misteri) is examined in this paper. Starting from a detailed geometrical and historical analysis of the concrete roof, the impact of the restoration interventions actually present in the archaeological area of Pompeii is examined in order to assess the actual seismic vulnerability of the buildings. As a case study the entire structure of the Domus of the Tragic Poet (masonry walls and concrete roof) has been analyzed by means of a finite element code.