This thesis has been developed with the purpose of supporting the buildings’ management sustainability evaluation, both in economic and environmental terms. This evaluation is important since the buildings have a great economical impact but especially environmental as well as social and cultural. The most effective approach to implement the evaluation is the standardized procedure of ISO 14040 and EN 15978, which provide guidelines for the economic and environmental analysis during life cycle (LCC and LCA), supported by the database Simapro 7.3.3. With regard to cost estimation the price list of Regione Lombardia has been used as reference document; these data has been endorsed by the prices used by some firms of the construction field. As case of study it has been analyzed a linear building of social housing. In particular two different solutions have been compared: the entire demolition followed by an intervention of new construction and the energetic refurbishment of the existing building. Concerning the demolition, according to the fact that is a complex sector for which there are not references in literature, it has been necessary to look at what it is done in the construction site and to study the different possible solutions looking for the most economically and environmentally sustainable one. Then in order to evaluate the intervention of new construction, some reference values, taken from literature, have been used to compare traditional construction technologies with more innovative one. Finally a wide range of building envelope refurbishment interventions has been considered to determine the best solution able to satisfy the economical, energetic and environmental needs. The best solution has been determined studying different elementary interventions and combining them together in the optimal way. This resulting solution is applicable to buildings characterized by similar features and construction technologies. As further developments it would be interesting carry out same sensitivity analysis to assess how a variation in the input values influence the final result.
Il seguente studio ha l’obiettivo di fornire un elemento per la valutazione della sostenibilità, sia in termini economici sia ambientali, delle possibili strategie di gestione dell’ambiente costruito, del quale, al settore delle costruzioni compete un grande impatto economico, ma soprattutto ambientale, oltre che sociale e culturale. Lo strumento più efficace per compiere tale valutazione è la procedura standardizzata delle norme ISO 14040 e della EN 15978, le quali forniscono le linee guida per l’analisi economica ed ambientale del ciclo di vita (LCC e LCA), supportata dalla banca dati Simapro 7.3.3. In merito alle valutazioni dei costi, i riferimenti utilizzati hanno interessato i prezzari della Regione Lombardia, avallati da imprese specifiche del settore. Il caso di studio ha interessato un edificio in linea di edilizia popolare, riguardo al quale sono stati confrontati uno scenario di demolizione totale seguito da un intervento di nuova costruzione ed uno scenario di riqualificazione energetica dell’esistente. È stato necessario addentrarsi nelle problematiche delle demolizioni degli edifici, un settore complesso e spesso demandato all’esperienza sul campo, cercando di individuare lo scenario più sostenibile economicamente ed ambientalmente, effettuando diverse considerazioni in merito alle tecniche adottabili. Si è demandato invece l’intervento di nuova costruzione all’assunzione di valori parametrici da letteratura confrontando l’adozione di tecnologie costruttive di tipo tradizionale con altre più innovative. Infine sono stati individuati un ampio ventaglio di interventi standard di riqualificazione dell’involucro determinando la combinazione ottimale in grado di soddisfare le esigenze di miglioramento ambientale, energetico ed economico. La metodologia di lavoro è stata improntata partendo da interventi elementari, combinandoli successivamente tra loro in modo da definire la soluzione ottimale, generalizzabile ad edifici analoghi per caratteristiche e tecnologie costruttive. Resta da chiedersi se l’approfondimento del livello di sensibilità e del peso degli input possa incrementare il grado di rispondenza del risultato finale.
RIQU-LCA : efficienza ambientale delle strategie di gestione dell'ambiente costruito
PORCINO, CATERINA FRANCESCA;LA TORRE, ANTONIO
2011/2012
Abstract
This thesis has been developed with the purpose of supporting the buildings’ management sustainability evaluation, both in economic and environmental terms. This evaluation is important since the buildings have a great economical impact but especially environmental as well as social and cultural. The most effective approach to implement the evaluation is the standardized procedure of ISO 14040 and EN 15978, which provide guidelines for the economic and environmental analysis during life cycle (LCC and LCA), supported by the database Simapro 7.3.3. With regard to cost estimation the price list of Regione Lombardia has been used as reference document; these data has been endorsed by the prices used by some firms of the construction field. As case of study it has been analyzed a linear building of social housing. In particular two different solutions have been compared: the entire demolition followed by an intervention of new construction and the energetic refurbishment of the existing building. Concerning the demolition, according to the fact that is a complex sector for which there are not references in literature, it has been necessary to look at what it is done in the construction site and to study the different possible solutions looking for the most economically and environmentally sustainable one. Then in order to evaluate the intervention of new construction, some reference values, taken from literature, have been used to compare traditional construction technologies with more innovative one. Finally a wide range of building envelope refurbishment interventions has been considered to determine the best solution able to satisfy the economical, energetic and environmental needs. The best solution has been determined studying different elementary interventions and combining them together in the optimal way. This resulting solution is applicable to buildings characterized by similar features and construction technologies. As further developments it would be interesting carry out same sensitivity analysis to assess how a variation in the input values influence the final result.| File | Dimensione | Formato | |
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https://hdl.handle.net/10589/72743