روش عمومی برای بازسازی سازه های ساختمان های تاریخی: موارد برج پیزا و کلیسای آسسی

The organization of a project of conservation or restoration involves different competencies. Historians, architects, engineers, etc., are called to work together because safety and durability have to be balanced with respect for the original conception and the historic value of the building. To fulfil these requirements it is necessary to follow a precise methodology, whose main steps are the survey, the diagnosis, the safety evaluation and the choice of criteria and techniques of interventions, and finally the controls. The study and intervention on the Tower of Pisa and the Basilica of St. Francis of Assisi are considered.