The reconstruction of residential buildings of historical centres damaged by L’Aquila 2009 earthquake

摘要: The reconstruction process of residential buildings of historical centres damaged by L'Aquila 2009 earthquake started from August 2012 with the adoption of Law n. 134/2012. With this law, the Special Offices for the Reconstruction of the city of L'Aquila (USRA) and the other affected municipalities (USRC) were issued. Each Office developed a parametric model to manage the reconstruction and to define the maximum public grant to repair and strengthen damaged buildings. The public grant was released according to funding requests from practitioners. The parametric models take into account the peculiarities of the buildings of the historical centres, which are grouped in such a way as to form complex building stocks, defined “building aggregates”(BA) consisting of Aggregate Minimum Units (namely AMU), in turn made by several buildings (B).The paper deals with the reconstruction models adopted by the two Offices, the analysis of AMU characteristics and usability ratings as well as repair and retrofit cost data obtained by funding requests. Furthermore, a comparison between the main statistics related to masonry construction features, repair and retrofit cost data and peculiarities of residential buildings outside and inside historical centres is herein presented.