Pratiche storiche di prevenzione nell’Arena di Verona: il caso del restauro temporario della cavea di Alessandro Perez (1879-1882)

This paper focuses on the work of prevention conducted by engineer Alessandro Perez in the cavea of the Verona Amphitheatre, between 1879 and 1882. The question about the cavea is the question about water and about all the problems connected to the presence of water inside an ancient building. The cavea, with its funnel structure, can be assumed to be the roof of the Amphitheatre. In fact, the external surface receives the rain and drains the water out of the monument to keep dry the internal spaces and the masonry structures. The paper have a conservative purpose, which consists in providing information from the historical restoration works and suggesting practically methods useful to the maintenance of the cavea.