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이원복(Lee, Won-Bok),김종협(Kim, Jong-Hyeob),강선임(Kang, Sun-Im),정현철(Jeong, Hyeon-Cheol),문현석(Moon, Hyun-Seok),현창택(Hyun, Chang-Taek) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.10
With urbanization and other development-related activities, construction of impervious surface continues to increase. Water-related environmental issues of watershed have also been raised with regard to water quality deterioration, flood crisis and drying of the river. The increase in frequency of localized heavy rainfall due to climate change has likewise led to considerable human and material damages. In a related move, the mandatory installation of Rainwater Harvesting Facility has been pushed to minimize environmental loads and construct sustainable eco-cities in terms of urban planning. As such, this study was designed to present installation standards based on the calculations of private and social benefits to recover the initial investment of facilities using rainwater through cost-benefit ratio analysis of Rainwater Harvesting Facility. It is the result of analysis that more than 50 households are desirable. We also found that investment cost recovery period has been curtailed if households are increased. consequentially, On this study, we suggest that 50 households be the Criteria of the Multi-Family Housing Rainwater Harvesting Facility which has economical validity.