Ricerc@Sapienza

Después de una breve presentación de las investigaciones anteriores sobre los aspectos de la interpretación de los espacios de Piranesi, la contribución propone un análisis geométrico de la "Veduta della fonte e delle spelonche d'Egeria fuor della Porta Capena", recogida en el "Vedute di Roma". El tema representado es el llamado Ninfeo de Egeria, una estructura arqueológica todavía existente, situada en el actual Parque Regional de Appia Antica.

We have chosen the Temple of Diana because of its unique ovoid shape. Opus caementicium allowed the Romans to build domes and vaults of great amplitude, thanks to an expert use of rubble, mortar, laying techniques and, above all, geometrical parameters, especially as regards the appropriate outline for the span and thickness to ensure stability. The intrados is contained in a hemisphere but it is not one itself. Finally, a set of measurements can be taken across the entire surface to tell us about the geometry and structural behav-iour.