Dynamic analysis of a pompeian domus

The archaeological site of Pompeii has been subjected to restoration interventions since the beginning of its excavation. After the second World War concrete structures replaced the old wooden roofs erected in the late XIX. 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. In particular, the structural role of atriums roofing structures in the Pompeii buildings is examined. The impact of the restoration interventions actually present in the archaeological area of Pompeii is analyzed. A dynamic analysis has been performed to assess the seismic vulnerability of the ancient buildings in their actual state. The paper shows that maintenance of the existing interventions is a fundamental topic and substitution of r.c. roofs with timber structures cannot be justified by structural reasons. As a case study the entire Domus of the Tragic Poet is analyzed. A simulation involving a wooden roof is compared with the actual structure of concrete roof building.