Extract

The building sector has been identified as one of the key sectors to achieve the 20/20/20 targets of the EU. Beyond these targets for the sustainable develop, Europe also aims at bringing about drastic greenhouse gas emission reductions in the building sector of 88%- 91% by 2050 compared to 1990 levels. The research topics of the pre-sent work are placed in this European context and the main concept to have nearly zero-energy buildings “is applied” to existing buildings. In fact, the category of existing buildings is considered by the European Commission as one of the sub-sectors of construction most potential to reduce the use of energy, the use of raw materials and the produc-tion of emissions. Some results of a European Project (R2CITIES) are presented; in particular a methodology to analyse the diagnosis and “concept” design phases in a requalification project. This methodolo-gy is included in the global replicable methodology presented in R2CITIES. It focuses on the generation of a comprehensive frame-work for the management and technical development of the district renovation process. Another aim of this proposal approach is to pro-vide a range of indicators for assess objectively the applicable solu-tions to support decision making through the complex process.

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