"Recoverability" of building elements in recovery intervention

The present work takes in the themes about the rescue of building materials, i.e. the prevention and reduction of building debris and is founded on the concepts of sustainable development and resource conservation. The considerations from which the research presented during this article start, concern the difficulties in order to identify waste areas, and still less to assess the environmental impact and the high cost for transport and dumping of the discarded material. Therefore the expectation, since the planning phase, of what can be preserved and/or reused to reduce building debris quantity,becomes more and more important. For us is also remarkable to deem many elements have to be preserved because of their intrinsic architectonic value or for their integration with the environment where they are put in or, still, like an historic evidence. After the individuation of the necessity about building elements evaluation, that serve by way of proem for each projectual choice, the work aim has been the description of a methodology that let to define in a well-pondered manner the "level of recoverabilty" of the element in order to be functional for the achievement of the set goals.