Seismic vulnerability reduction in the historical urban fabrics. A valuation planning approach

This study proposes a valuation planning approach to the seismic vulnerability reduction carried out within the general planning framework concerning the Faentina Union, a group of five small towns located in the south-western part of the Province of Ravenna, Italy. The plan consists of three main stages: knowledge - the typological, constructive and technological description of the buildings specifically concerning their vulnerability degree; interpretation - a set of critical analyses enveloping the previous descriptions, and aimed at outlining a range of hypotheses about the damage mechanisms, both current and potentially enabled in case of seism; planning - identifying the works intended to preserve the original constructive and material features and to definitely reduce the vulnerability of the buildings. This stage includes a cost modelling tools aimed at outlining the trade off between the vulnerability degree reduction and the number of building that can be included in the programme, given the budget.