The reconstruction of residential buildings of historical centers damaged by L'Aquila 2009 earthquake

The reconstruction process of residential buildings of historical centers damaged by L'Aquila 2009 earthquake started from August 2012 with the emanation of Law n.134/2012. With this law, the Special Offices for the Reconstruction of the city of L'Aquila (USRA) and the Municipalities of the Crater (USRC) were established. Each office developed a parametric model to manage the reconstruction and to define the maximum public grant to repair and strengthen the damaged buildings. The public grant was released according to funding requests made by practitioners. The parametric models were necessary to take into account the peculiarities of the buildings of the historical centres, which are grouped in such a way as to form complex agglomerates of buildings, called building aggregates (namely AE) made by Aggregate Minimum Unit (namely UMI) in turn made by several buildings (ED). The paper deals with the reconstruction models adopted by the two offices, the analysis of building characteristics and repair/strengthening intervention as well as data actual costs data obtained by funding requests. Furthermore, a comparison between the main statistics related to the damage, reconstruction procedures and peculiarities of residential buildings outside historical centers and inside historical centers is herein presented