Regenerate, retrain, reuse. A GIS based on spatial multi criteria analysis for the redevelopment of abandoned military areas in Pisa

This work aims at the reintegration into the urban fabric of three abandoned barracks in the historic centre of Pisa. In particular were analysed a military complex, a former military district - both dating back to the beginning of the 20th century - and a former monastery, which became military property in the 1800s. They are composed by several buildings of considerable architectural importance and wide green spaces now completely inaccessible. With the aim of de fi ning new uses compatible with areas and with the needs of citizens, but especially with the new requirements for sustainable development and the constraints of historic centres, was used a GIS based Multi-Criteria-Decision-Making approach. The integrated use of GIS with MCDM allows to de fi ne different spatial criteria and indicators and to make explicit the contributions of the different choice options to different criteria that de fi ne the problem. The major phase of the research concerned the determination and quanti fi cation of the impacts that the new uses could have on the urban fabric. For this purpose was used the ELECTRE 3 method, developed in a GIS implemented through a proprietary programming language. This model allowed to obtain a classi fi cation of the three barracks for each of the six new hypothetical uses de fi ned by involving the stakeholders. The intersection between the results of the technical analysis performed with the aforementioned methods and the preferences de fi ned by the stakeholders, allows locating the three most suitable new functions in the barracks.