City Gates. Proportional criteria and shape models for the design of Baroque gates in Turin

Baroque Turin was the subject of three expansions, which involved the transformation of the city walls and the construction of new bastions and gates to access the city. The gate named Porta Nuova was designed by Carlo di Castellamonte and built in 1620; the Porta di Po since 1674, with the contributions of Amedeo di Castellamonte, designer of the guard-house, and Guarino Guarini, designer of the façade towards the river. Both gates were demolished in the early 19th century during the French occupation. There are numerous archival and iconographic documents representing them, testifying to the design phases and variants over time and, in the case of Porta di Po, the foundation remains, discovered in the late Ninety during the works in the area. Through graphical analyses and digital modeling will be proposed reconstructions, highlighted proportional criteria and set up comparisons with the different historical images.