L'EDIFICIO COME SUOLO. Strategie per un rinnovo del patrimonio residenziale pubblico tramite addizione

Public residential buildings built in the second part of XIX century form the main part of contemporary building estate, but they often show technical, structural and functional loss. Sure-Fit (Sustainable Roof Extension Retrofit for High-Rise Social Housing in Europe), is a research project funded by the European Commission under the Intelligent Energy Europe Programme on the theme of retrofitting through the use of technologies, methods and implementation procedures to extend and expand the social housing stock. Sure-FIT project is part of a wider strategy of retrofitting and urban renewal. It seeks to develop strategies that not only increase the living space, but add additional benefits in terms of architectural improvement and updating of the housing stock. The analysis of design solutions developed during the research showed the factors shared by the various studied approaches, included: - choosing construction procedures that can lower construction costs and shorten completion times; - using industrialized systems and lightweight technologies compatible with the structural features of retrofitted buildings; - adopting solutions that simplify the interface between new and existing structures and can use standard components and systems available on the market. The project developed by Ipostudio Architetti and E.R.P of the City of Florence, pertaining to row housing built in the 80s on the west outskirts of Florence. The building has obvious shortcomings in terms of energy use, accessibility and heights not fitting with the buildings in the areas. The new extension system proposes a comprehensive redevelopment in terms of energy, building type and structure. The facade expansion and height extension make up an independent structural respecting technical regulations for building in seismic areas. A series of facade components are anchored to the new structure to improve the building’s energy efficiency. New spaces are added to the existing apartments. The technological and typological customization of the added system, on the one hand, ensures the product/components customization strengthening the catalog market, while ensuring flexibility in design and the use of solutions that meet and adapt to space requirements.