Basic sector dassification lnput 10ulput tab且 e were apPlied to ana 且 yze 重 he construction , operation and renewal of office buildings to oblain the Iife cycle energy consumplien and carbon dioxide emission . Tota]energy consumption is approximately g GJ per sq し lare meter bf floor area by construction , 1. 2 GJ per square meter per annum for opera1ion and O . 037 G 亅 per square meter per annum for renewaL 喰)lal carbon dioxide elnission is apProxiInately 980 kg per square meter of f且 ool ' area by construction .90 kg per square meter per annum for operation and 3 kg per sq 岨 re meter per anmlm for renewal . Kaytoord 二 inPut / OutPut ttzbte , energy 'onsumption , CO 2 emis εion , conStltruction. qparation , office
Michiya SUZUKI and Takashi・ 4KIMOT () Abuildin ' g produces huge amount ofenvironmental ] oad during its ] jf ヒcycle , inctuding buildingcomponent manufacture stagc , construction stage , occupatiQn stage , and demolition stage . [ n the fUture , we have to decrease this total environmenta ] load amount to realize the sustainable society . For Life Cycle Assessment of building , it is in common to do quantitative analysis (inventory analysis)〔}f [ oad agains し envirorLme 皿し Foliowed by inventory analysis , Life Cycle 【 mpact Assessrnent will be carrieCl out , ln this study , we have carried Qut a survey with questionnaire to predict category − weighting factors that is needed at aggregation stage of Li fe Cycle lmpact Assessment fc)r bujldings . Furthemlore , Contingent Valuation Method ; CVM) is introd ロ ced in the questionnaire to have the negative social value of cQnstructing and opeTating buildings in the city、
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