Reconstruction model of residential buildings in the historical centers of the crater municipalities after L'Aquila 2009 earthquake

The reconstruction process of residential buildings damaged by L'Aquila 2009 earthquake initially involved buildings outside historical centres and then, starting from August 2012, residential buildings in historical centres. The reconstruction model related to buildings in historical centres was developed by two special offices, involved in the reconstruction process of L'Aquila municipality and other 56 municipalities, respectively. Both special offices introduced new procedures to manage the reconstruction based on a parametric model to define the maximum public grant to repair and strengthen the damaged buildings in historical centres. The new model was necessary to deal with the reconstruction of historical centres mainly characterized by old masonry building aggregates with a cultural and architectural heritage value. The parametric model defined by the Special Reconstruction Office of the Crater Municipalities - USRC - is illustrated in the paper. The model allows to evaluate the maximum public grant on the basis of both the damage detected after the seism and the building vulnerability. Several potential grant increase to preserve the artistic and architectonic assets of historical buildings are also included in the model. The paper illustrates the main aspects of the parametric model along with the preliminary analyses of the public grant released up to April 2016.