Problem and its Significance.

After the last seismic events that almost entirely destroyed the village of Castelluccio di Norcia (Umbria, Italy), the Extraordinary Commissioner, the Special Office Reconstruction Umbria and the Municipality of Norcia identified in the reconstruction of the village one of the priority and urgent needs of the community. This paper illustrates the implementation of the project developed for the unitary reconstruction of the village.  The procedure is based on the application of a seismic isolated platform extended to the entire old town, which constitutes an original, innovative and effective method for the integrated unconventional reconstruction of an entire village.

Approach.

The Special Ordinance no. 18/2021 entrusts the rebuilding of the entire village of Castelluccio to the public management, within a single recovery program that integrates the construction of primary services and the restoration of both public and private buildings, in order to allow the complete rebuilding of the forma urbis, by restoring the morphology of the soil and the configuration of public and private spaces. The Umbria Rebuilding Special Office is identified as the implementing body for the implementation of the interventions which procedural simplifications have been envisaged. The Ordinances defines the actions and activities that have been implemented to start the overall rebuilding of Castelluccio's historical center, identifying the works whose rebuilding or restoration takes on a particularly urgent and critical nature in relation to both intrinsic functions and characteristics, and with the purpose to restore the social and economic fabric.

Results/Applications.

The adoption of a seismic isolation system at city scale involves the construction of a large floating slab, having the dimensions of the entire compartment, stepped due to the site orography, and supported by seismic isolators, above which to construct buildings that will present the aesthetic and constructive characteristics of the collapsed original ones. The solution allows a correct interpretation of the objective to rebuild "as it was, where it was", safeguarding the landscape, prolonging the lifetime, saving the expected cost. An advanced feasibility study for the reconstruction of Castelluccio on an isolated stepped platform has been carried out, the  executive design is currently at an advanced stage, the preliminary works are already under way.