Damage, losses, reconstruction policies and retrofit interventions on residential buildings in historical centers after recent italian earthquakes

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 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 data collected in the management process of reconstruction outside and inside historical centers, allowed obtaining precious and unique information on buildings and aggregates characteristics, damage and usability ratings as well as repair and retrofitting cost data obtained by funding requests. Furthermore, these data are the basis to carry out a comparison between the repair and retrofit cost data and peculiarities of residential buildings outside and inside historical centers.