• KIEAE Journal
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• v.15 no.2
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• pp.109-115
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• 2015

Purpose: The importance of building airtightness is increased as the demand and expectation of building energy efficiency is growing. Previous research only focused on airtightness of building openings only to improve building airtightness. However, the analysis of difference of airtightness performance according to the characteristic of building structure has not been performed. Therefore, this study analyzed the difference of airtightness performance according to building structural characteristics in a number of ways. Method: Airtightness that are classified as rigid-frame type or wall type are measured and analyzed the difference of airtightness performance between rigid frame type apartments and wall type apartments. This study calculated the heating energy demand and quantitatively analysis using ISO 13790. Futhermore, this study compared research trend of domestic airtightness performance with airtightness standards of the developed countries based on the field measurement. Result: Airtight performance of wall type is better than rigid frame type in terms of energy saving. The difference of heating energy demand between wall type and rigid frame type was $8.14kWh/m^2yr$.

• Korean Journal of Construction Engineering and Management
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• v.18 no.1
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• pp.27-36
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• 2017

Ministry of Land, Infrastructure and Transport established Heating and cooling energy conservation plan of apartment for 2017, reducing 90% compared to energy consumption of 1990. Also, at 2015 United Nations Climate Change Conference, the Ministry announced to reduce 37% of estimated $CO^2$ emission(850 million ton) at 2030. To satisfy this, it is urgent to reduce $CO^2$ emission due to the building, which takes majority amount of total $CO^2$ emission, and public interest for the commissioning of intensified building performance is uprising. However, the building commissioning at construction is not enacted, and not activated due to the lackness of promotion and will of general contractor. Furthermore, commissioning is not mandatory for obtaining G-SEED certification. Therefore, this paper describes effectiveness of commissioning with comparison of commissioning evaluation criteria of G-SEED with LEED and BREEAM, to propose making commissioning as mandatory process and drive changes in perception among stakeholders for activation of domestic building commissioning.

• Journal of Broadcast Engineering
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• v.13 no.5
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• pp.636-650
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• 2008

DTV has a great advantage as compared to Analog TV in picture quality under low reception field strength. Various high quality tuners have been developed to result in much smaller Noise Figure of the receivers and many trials for receiving DTV signal through indoor antenna. In this paper, results of intensive field tests on the indoor reception of DTV are presented. Tests were carried out around Seoul-Gyeonggi Metropolitan area. Commercial directional and omni-directional antennas and 5th generation receiver were used for reception availability tests. The effects of heights, locations, and types of the house as well as the distance to the transmitter on the reception performances are analyzed. Our test results will be applied to improve the indoor reception environment of DTV.

• Journal of Cadastre & Land InformatiX
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• v.46 no.1
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• pp.101-115
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• 2016

The uses of land were relatively simple in the old days, but they are being expanded rapidly to the aboveground and underground due to the urban concentration, the large-scale urban development and so on in these days. Accordingly, the concept of the rights to lands grows from 2D to 3D, and many studies about the 3D cadastral information have been performed in recent years. Several studies were performed about the construction and the visualization of the 3D cadastral information, but most of them focused on the 3D visualization of the buildings and facilities. However, it is more desirable to visualize the individual objects of the rights to lands while considering 'the information on the rights' as well as the 'physical information'. Therefore it is supposed to construct and use the 3D cadastral information based on the individual objects of the rights in this paper. The level of the cadastral information will be upgraded by making and describing more detailed 3D cadastral information through this paper. And also the applicability of the 3D cadastral information will be improved when it is used with the real estate information, the demographic information and many others.

• Land and Housing Review
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• v.14 no.3
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• pp.93-106
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• 2023

This study attempted to simulate changes in the thermal environment according to the type of apartment complex in Korea using CFD techniques and evaluate the thermal environment by type of apartment. First, apartment complex types in the 2000s and 2010s were referred from previous studies and four types of apartment complex were extracted from. Second, the layout of the apartment complex and temperature changes were analyzed by the direction of wind inflow. Third, a standardized model was created from each type using tower type, plate type, and mixed driving. Last, CFD simulations were performed by setting up the inflow of wind from a total of eight directions. The temperature was relatively low in the type consisting of only the tower type and the type of placing the tower type in the center of the complex, regardless of the direction of the wind. It was due to the good inflow of wind from these types to the inside of the complex. It can be interpreted because wind flows easily into the complex in these types. The findings showed that wind flow and resulting temperature distribution patterns differed depending on the building type and complex layout type, confirming the need for careful consideration of the complex layout in the early design stage. The results are expected to be used as basic data for creating a sustainable residential environment in the early design stage of apartment complexes in the future.

• Korean Architects
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• no.11 s.427
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• pp.18-32
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• 2004

영예의 대통령상이 수여되는 한국건축문화대상의 대상이 올해부터 '비주거'와 '주거'로 나뉘어 확대, 시상한다. 그 첫번째 수혜자로 비주거부문은 김삭식 건축사(주.금성 종합건축사사무소 대표)가 설계하고, (주)금호산업이 시공한 '광주광역시청사'가 주거부문에는 김종국(주.종합건축사사무소 건원)건축사가 설계하고, 현대산업개발(주)이 시공한 '아이파크 삼성동'이 국내 준공건축물들을 대상으로 한 2004한국건축문화대상에서 영예의 대상으로 각각 선정됐다. 또 올해 한국건축문화대상에서는 KT여의도사옥 등 6작품이 본상을 차지한 것을 비롯해 우수상 등 모두 22개 작품이 수상작으로 선정됐다. "불이 - Architecture in NatureㆍNature in Architecture"를 주제로 공모한 일반 및 신인ㆍ학생 대상의 계획건축물부문에서는 박종대, 윤새봄, 김정희(인하대학교 건축공학과대학원 건축의장연구실)씨가 공동 출품한 'Plankton House'가 금상을 차지한 것을 비롯해 은상 2팀, 동상 3팀 입선 22점 등 모두 28개 팀이 입상했다. 올해 한국건축문화대상에는 준공건축물부문 89점, 계획건축물부문 252점 등 총 341개 작품이 응모했다. 비주거 부문의 대상을 차지한 광주광역시청사는 "관 건물의 이미지를 탈피하여 하나의 문화 건물로 탈바꿈하려는 시도가 특히 돋보이는 작품으로 시공에도 많은 어려움이 있었음에도 불구하고 완성도가 우수한 작품"이란 평을 받았다. 또한 주거 부문의 아이파크 삼성동은 "아파트이면서도 주상복합의 이미지를 구현시키면서 판상형 형태에서 벗어나 탑상형 배치에 의한 낮은 건폐율 적용으로 친환경적인 단지를 이루고 있으며, 특히 시공이 매우 우수한 작품"이란 평을 받았다. 한편 올해부터 우리나라 건축문화발전을 위해 기여한 건축인을 발굴해 시상하는 '올해의 건축인상'을 제정, 그 첫번째 수상자로 김석철 건축사(아키반건축도시연구원 건축사사무소)와 이창남 건축사(센구조 건축사사무소)가 선정되어 건설교통부장관상을 받았다. 시상식은 지난 11월 24일 서울 종로구 세종로 세종문화회관 컨벤션홀에서 개최되어 대상의 비주거부문 수상작의 설계자인 김상식 건축사에게 대통령상 그리고 시공자인 (주)금호산업에게는 건설교통부장관상, 건축주인 광주광역시장에게는 국무총리상이 수여됐다. 또한 주거부문 수상작의 시공자인 현대산업개발(주)에게 대통령상 그리고 설계자인 김종국 건축사에게는 국무총리상, 건축주인 현대산업개발(주)에게는 건설교통부장관상이 수여됐다. 또 KT 여의도빌딩 등 본상 6개 작품의 설계자 및 시공자에게는 건설교통부장관상 등 정부포상이, 준공건축물부문 우수상 입상자 전원에게는 각각 대한건축사협회장상, 서울경제신문사장상이 수여됐다. 계획건축물부문의 금상 수상자에게는 건설교통부장관상과 상금이 수여되었으며, 은상과 동상, 입선작은 대한건축사협회장상과 상금이 각각 수여됐다. 아울러 동상이상 수상자 중 영어 인터뷰심사를 거쳐 2명을 선발, ARCASIA 학생잼버리대회 파견 특전이 주어진다. 건설교통부와 대한건축사협회, (주)서울경제신문이 공동주최하고 대한주택공사 등 건설관련 5개 단체가 후원하는 한국건축문화대상은 올해로 13회째 개최되고 있다. 더욱이 올해에는 대통령상을 두 부문으로 나누어 시상하는 등 그 폭이 넓어져 수상자에게 더 큰 영예를 주었으며, 시간이 흐를수록 그동안 기성 건축인들의 창작의욕 고취는 물론 건축저변을 크게 확대하였다는 평과 아울러 우리 건축문화 창달에 기여해 한국건축문화대상은 명실공히 국내 건축인은 물론 일반 국민의 대표 건축축제로 자리매김하고 있다.

• Journal of Environmental Policy
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• v.10 no.4
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• pp.39-59
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• 2011

In this article, I would like to analyze the conditions in applying the LCC method for each construction type by selecting 10 apartment complexes among the Turn-key projects which have been ongoing for the last 5 years. In addition, this article will identify the problems to the application of double landscape architecture and suggest improvement measures. Among the 10 case targets, a total of 151 LCC analyses were conducted, and the average application ratio placing for each construction type was shown in the following order: architecture (34.4%)> electricity (21.2%)>machine (18.5%)>civil engineering (13.2%)>landscape architecture (12.6%). As numbers show, landscape architecture was the lowest. The ratio of LCC reduction amount was shown in the following order: machine (32.1%)> architecture (23.9%)>electricity (23.4%)>civil engineering (17.5%)>landscape architecture (3.1%). The field of landscape architecture had a reduction amount that was about 5 to 6 times lower than civil engineering which had a similar number of LCC analysis cases. The total LCC analysis items of landscape architecture was 19, including 15 double packing material, 1 building covering, 1 grass planting, 1 planting infrastructure, and 1 facility. The following measures were suggested to promote LCC analysis in landscape architecture: first, set an analysis item that considers the construction expense ratio of landscape architecture; second, legal regulation of landscape architecture and expansion of its application; third, prepare VE/LCC standards which are suitable for landscape architecture.

• Korean Journal of Construction Engineering and Management
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• v.17 no.2
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• pp.70-79
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• 2016

The current remodeling cost estimation process is not only dependent on the historical data of new building construction, but it also has a poor linkage with risk-based estimation approach. As such, there is a high risk of falling short of initial budget. To overcome this, a risk-based estimation approach is necessary by providing a probabilistic estimation in consideration of the potential risk factors in conducting the remodeling projects. In addition, the decision-making process should be linked with the risk-based estimation results in stead of intuitive and/or experience-based estimation. This study provides a probabilistic estimation process for residential remodeling projects by developing a detailed methodology in which a step-by-step approach can be achieved. The new proposed estimation approach can help in decision-making for remodeling projects in terms of whether to proceed or not, by effectively reflecting the potential risk factors in the early stage of the project. In addition, the study can enhance the reliability of the estimation results by developing a sustainable estimation process model where a risk-based evaluation can be accomplished by setting up the cost-risk relationship database structure.

• Journal of the Korea Concrete Institute
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• v.18 no.6 s.96
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• pp.721-728
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• 2006

Earthquakes are reported thai building structures have been colossal damaged, but before 1988 designed structures which were not applicate seismic design code have no seismic performance. Especially, for the apartment structures were indicated that it have no resist wall element of earthquake before 1988 designed structures. We have to evaluate for seismic performance this structures, therefore it will be retrofitted for seismic index sufficient structures. We performed seismic performance evaluation for model structures by MIDAS which is general structure analysis software. In this study, it was performed shaking table test to evaluate model structure which is reinforcement concrete and 5 floors for seismic performance index. We made specimens by similar's law and tested shaking table test. In the shaking table test it is not performed prototype model test because of space and equipment condition. So we had made scale-down model for 1/5 by similar's law. That's why it needs for the evaluation of performance. However, it is not possible to do an experiment of prototype owing to the shortage of space and the limit of an experimental instrument in the shaking table test. Then, modeling and reducing the part of prototype do the experiment. In this experiment a shaking table test is done and seismic performance of model structures is evaluated by using similitude laws for scale down specimen. As a result it is proved that non-seismic design structures need to retrofit since seismic performance shows life safe grade in 0.12g of an earthquake.

• Journal of Korean Society of Environmental Engineers
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• v.31 no.7
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• pp.521-530
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• 2009

This study has been made to execute a research in order to lead the improvement of indoor air quality, examining the indoor ventilation characteristics by using a numerical analysis method. To this end an extensive parametric investigation are made according to various external flow variables such as main wind direction and wind speed by season, building layout design, and location of ventilators, etc. in Daedeok Techno Valley, one of large-scaled apartment in Daejeon. It is observed there was a significant difference of main wind direction between summer and winter. The main wind direction in summer was a south wind, and on the contrary the direction in winter is northnorthwest, which is similar to the average main wind direction for 10 years. One of the important calculation results is that the change of wind direction causes a significant effect on the apartment ventilation by the change of pressure difference around each complex of apartment. In case of favorable area of ventilation, the indoor ventilation rate can meet 0.7 ACH from the standard value only with natural ventilation. On the contrary, in other area the value was much lower than the standard value. If the calculation result applies to the design of layout apartment or placement of ventilators, it will be greatly helpful to the energy saving because it can be parallel with the natural ventilation to help securing ventilation rate, not much depending on the mechanical ventilation.