Analysis of the reconstruction process of the historical centres hit by the 2009 Abruzzi earthquake: intervention costs and considerations on the effectiveness of the grant increases for historic traditional buildings

Following 2009 Abruzzi Region earthquake, the reconstruction process of historic centres of towns and villages most affected by the event was governed by the so-called "Integrated Model for Crater Cities (MIC)". This is a parametric model that allows to define, through step by step and simple procedures, the allowable grant amount for repair work. The MIC model, essentially, consists of two distinct parts: the first one is data sheet that allows to calculate, by parametric way, the maximum financial contribution on the basis of data about the damage and vulnerability of single buildings; the second one is an executive project of the intervention associated with the bill of quantities. The simultaneous delivery of this documentation allows to assess the suitability of intervention and to verify that the requested grant respects financial threshold established by law. Considering that the procedure is applied to buildings belonging to historic centres, some grant increments have been identified both to promote the preservation of the historical fabric and of the constructive peculiarities of the area, both to prevent too invasive interventions that could modify the architectural and structural peculiarities of the different local areas. In this paper the analysis of intervention costs of the projects presented with the MIC model will be discuss with particular attention to the financial increments and intervention type that were most widely used.