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Jung H.G.,Hanyang University | Shin S.W.,Sustainable Building Research Center
Advanced Materials Research | Year: 2014

Energy, CO2 and Water are most important issues that environmental impact in buildings and cities. These are related each other very closely. This study has attempted to analyze CO2 emission by water usages, sewage wastes and also water saving strategies like installation water saving devices, rainwater harvesting and gray water system in office buildings. To assess from the early design stage, should be developed regional water amount and regional CO2 emission factor by water. Consequently, estimated one sample office project in Korea and suggested effective CO2 emission reduction plan in the water sector. Total amount of CO2 emission in the water sector in sample office building is 188.25 t·CO2eq/yr. © (2014) Trans Tech Publications, Switzerland. Source

Jung H.G.,Hanyang University | Shin S.W.,Sustainable Building Research Center
Advanced Materials Research | Year: 2014

Globally or regionally Building Sustainability Assessment Systems (LEED, BREEAM, CASBEE, Green-star, G-SEED and etc.) have been developed and green building market has been growing rapidly. Through updating regularly, these assessment systems have been evaluated themselves. For increasing quantitative efficiency and satisfying social requirement, it was adopted that carbon emission assessment reflects regional specifics and system characteristics. Carbon emission assessment in buildings differs with other industry. Defining scope, boundary and method should be fitted into building level. In this study describe blueprint for integrated building sustainability assessment system focused on carbon emissions to achieving sustainability and considering stakeholders' needs. The basic 5 principles are TBL concept, Eco-efficiency, Life Cycle, Top-down/Bottom-up approach and Integrated Design Process. Next generation of building sustainability assessment system should evaluate based on strength of these principle, furthermore those would be used for core concepts of Green Building Index. © (2014) Trans Tech Publications, Switzerland. Source

Ahn K.-J.,GeumSung Architects and Planners Co. | Baek C.,Sustainable Building Research Center
Applied Mechanics and Materials | Year: 2013

Wind loads like typhoon and hurricane inflict numerous personal damages and tremendous property damages each year, and such wind loads are recognized as critical element for development of construction methods for the counteraction against them in consideration of climatic environments of buildings. While 2×4 construction system which burgeoned from North American and has been supplied throughout the world is recognized for its effectiveness, there has been no clear identification on how this system has adapted itself for wind loads in local conditions. This study has the purpose to clarify the local performance of 2×4 construction system through comparison of 6 countries on how this system has changed and is taking counteractions for wind loads the major climatic element. In this study, comparative analysis was conducted on the foundation, bottom, wall and joints of 2×4 construction system of each region to take counteractions against wind loads, and finally through summary of them, 2×4 construction system for counteraction against wind load was proposed. © (2013) Trans Tech Publications, Switzerland. Source

Lee J.W.,Hanyang University | Kong Y.B.,Hanyang University | Shin S.W.,Sustainable Building Research Center
Advanced Materials Research | Year: 2014

This study has compared the equivalent external pressure coefficients, (GCpf)eq, with 6 wind load provisions and wind tunnel test data. The wind load provisions are the ASCE 7-10, NBCC 2010, AS/NZS 2011, EN 2005, AIJ 2004 and KBC 2009. Experiment data on low-rise building have been obtained at the University of Western Ontario (UWO) to contribute to the NIST aerodynamic database [1]. For the experiment, a model with 1:12 of roof slope and 4.9 and 12.2m of eave height was used under open terrain conditions (See also Ref. [1]). (GCpf)eq was re-normalized based on the external pressure coefficients, GCpf, of ASCE 7-10. When compared to (GCpf)eq of the experiment data with 4.9m of eave height, consequently, ASCE 7-10 (81%), NBCC 2010 (84%), AS/NZS 2011 (70%), AIJ 2004 (68%) and KBC 2009 (53%) were all underestimated. Among them, KBC 2009 reveals the lowest value. On the contrary, EN2005 was overestimated with 122%. When the eave height was 12.2m, in addition, the same pattern was observed in most codes. EN2005 was slightly overestimated with 115%. © (2014) Trans Tech Publications, Switzerland. Source

Lee K.-I.,Ajou University | Yeom D.,Ajou University | Lee B.,Sustainable Building Research Center
Applied Mechanics and Materials | Year: 2012

This research tried to analyze the effects of ecological materials on indoor environments. For this purpose, two full scale mock-ups were constructed: one with silk wall paper, which is generally used for indoor finishing and the other with hwang-toh (yellow soil), which is the preferred material for wall finishing. Comparison and performance evaluations were conducted, and the effects of hwang-toh finishing on a humid indoor environment were verified. Through this research, it was verified that a hwang-toh plaster finish is effective in maintaining the comfort of an indoor environment. © (2012) Trans Tech Publications, Switzerland. Source

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