• Journal of the Korea institute for structural maintenance and inspection
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• v.12 no.6
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• pp.233-240
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• 2008

This paper presents an experimental study on the air contents and the chloride penetration in offshore concrete depending on the types of forms. Three types of concretes(plain, MSF, and FA concretes) with four kinds of forms(wood, coating wood, steel, and polypropylene film) were investigated. The test results show that the air contents in the concrete cured with steel and polypropylene forms were higher than those with wood and coating wood forms. The concrete with wood forms has the least air content. The variation of chloride ingress time was large depending on the types of forms on the same concrete, i.e. 13.2, 20.3, and 17.7% for Plain, MSF, and FA concretes, respectively. Consequently, the surface conditions of forms should be considered for design of durable concrete.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2004.11a
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• pp.296-300
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• 2004

As a building aged, overall performance considering structural safety, equipment safety and fire safety is lowering gradually. Since the building performance and the overall value of the building change as time elapse, exact safety performance of the building should be evaluated not only maintaining the building efficiently and also preventing disputes between buyer and seller of the building. We suggest major elements for assessing building's safety performance through surveying literatures, interviewing experts, reviewing existing assessment models, The assessment elements proposed here ate comprised of structural safety, equipment safety, fire safety, fire protection and fire escape, etc. This study helps to make a safety performance assessment criteria for a building.

• Korean Architects
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• no.2 s.370
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• pp.43-43
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• 2000

신도시는 수도권 주택문제 해결을 위하여 1980년대부터 건설되어 왔다. 행정기관의 분산정책과 함께 개발된 과천 신도시와, 주택 200만호 건설을 위하여 급조된 분당, 일산 등 신도시들이 건설되면서 건설업계는 한동안 호황과 함께 자재, 인력 부족이라는 몸살을 앓기도 하였다. 고층 고밀 아파트 단지를 중심으로 구성된 신도시는 주택 보급률 향상에는 도움을 주었지만 주거의 질에 대한 문제의 심각성을 부각시키기도 하였다. 또한 가장 빠른 기간에 거대한 신도시 건설은 세계 도시사에 신기록으로 남을 것이다. 그러나 지금은 건설배경이나 건설과정의 어려움을 잊고 이제는 위성도시로 자리잡아 가면서 나름대로의 지역문화를 형성하고 있다. 대부분 수도권에 위치한 신도시의 주민은 수도권 주변에서 떠돌다 모여들었고, 서울을 생활기반으로 삼고 있다. 낯선 곳에 낯선 사람들이 모여 새로운 도시설계 기법으로 설계된 낯선 도시에서 만나 살아가는 그들은 그들 나름대로의 새로운 도시 문화를 구축하고 있다. 그들은 급변하는 우리 현실에서 신도시에 대한 적용을 어떻게 하고 있는가? 신도시, 그곳에도 지역성은 있는가? 각 지역별로 새롭게 형성된 신 문화지형은 어떠한 모습으로 형성되고 있는가? 그리고 그곳에서 새롭게 자라나고 있는 도시건축문화는 무엇인가?라는 의문은 건설후 지금까지 그리고 앞으로 건설이 완성될 때까지, 또 계속 팽창되어 가는 신도시에 던져질 화두이다. 지역건축탐방은 인천을 시작으로 전국을 돌아 이제 신도시와 북한 편으로 마감을 하게되었다. 이 연제를 계기로 지역건축에 대한 이해와 관심이 고조되었고, 또 지역건축에 관심이 있었던 건축사(가)나 학자들의 모임이 활성화 되기도 하였다. 지역성에 대한 문제는 지역주민의 꾸준한 관심에서 출발되고 그 지역을 만들어나가는 건축사(가)들의 의식속에서 자라나게 된다. 또한 지역건축의 활성화는 지역문화형성의 밑거름이 되고 나아가 우리문화의 원천이 될 것이다. 지역성에 대한 문제는 앞으로 더욱 논의가 되어야할 영원한 과제이다. 신도시 편은 1999년 12월호 상편에 이어 이번호에 하편을 게재한다.

• Korean Architects
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• no.12 s.368
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• pp.61-78
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• 1999

신도시는 수도권 주택문제 해결을 위하여 1980년대부터 건설되어 왔다. 행정기관의 분산정책과 함께 개발된 과천 신도시와, 주택 200만호 건설을 위하여 급조된 분당, 일산 등 신도시들이 건설되면서 건설업계는 한동안 호황과 함께 자재, 인력 부족이라는 몸살을 앓기도 하였다. 고층 고밀 아파트 단지를 중심으로 구성된 신도시는 주택 보급률 향상에는 도움을 주었지만 주거의 질에 대한 문제의 심각성을 부각시키기도 하였다. 또한 가장 빠른 기간에 거대한 신도시 건설은 세계 도시사에 신기록으로 남을 것이다. 그러나 지금은 건설배경이나 건설과정의 어려움을 잊고 이제는 위성도시로 자리잡아 가면서 나름대로의 지역문화를 형성하고 있다. 대부분 수도권에 위치한 신도시의 주민은 수도권 주변에서 떠돌다 모여들었고, 서울을 생활기반으로 삼고 있다. 낯선 곳에 낯선 사람들이 모여 새로운 도시설계 기법으로 설계된 낯선 도시에서 만나 살아가는 그들은 그들 나름대로의 새로운 도시 문화를 구축하고 있다. 그들은 급변하는 우리 현실에서 신도시에 대한 적용을 어떻게 하고 있는가? 신도시, 그곳에도 지역성은 있는가? 각 지역별로 새롭게 형성된 신 문화지형은 어떠한 모습으로 형성되고 있는가? 그리고 그곳에서 새롭게 자라나고 있는 도시건축문화는 무엇인가? 라는 의문은 건설 후 지금까지 그리고 앞으로 건설이 완성될 때까지, 또 계속 팽창되어 가는 신도시에 던져질 화두이다. 지역건축탐방은 인천을 시작으로 전국을 돌아 이제 신도시와 북한 편으로 마감을 하게 되었다. 이 연제를 계기로 지역건축에 대한 이해와 관심이 고조되었고, 또 지역건축에 관심이 있었던 건축사(가)나 학자들의 모임이 활성화 되기도 하였다. 지역성에 대한 문제는 지역주민의 꾸준한 관심에서 출발되고 그 지역을 만들어나가는 건축사(가)들의 의식속에서 자라나게 된다. 또한 지역건축의 활성화는 지역문화형성의 밑거름이 되고 나아가 우리문화의 원천이 될 것이다. 지역성에 대한 문제는 앞으로 더욱 논의가 되어야할 영원한 과제이다. 신도시 편은 이번호에 상편을 싣고, 하편은 2000년 2월호에 게제될 예정이다.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2022.04a
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• pp.123-124
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• 2022

The work of modeling and calculating the quantity of detailed parts requires a lot of time and effort. However, The information of BIM Model can be used to predict the amount of uncreated parts with Deep Learning. In this study, Deep Learning was used to predict the total length of the member of frame that was not created. As a result, it was confirmed that the error rate was inside or outside 3%. And predicting other components in this way will increase productivity in Architectural field.

• Applied Chemistry for Engineering
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• v.28 no.5
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• pp.501-505
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• 2017

Due to the rapid urbanization and increased population, there is an increase in airtight nature of buildings which causes serious indoor air pollution. Among several indoor air pollutants, volatile organic compounds (VOCs) emitted from paint are of major concern. Therefore, there is an urge for the development of environmental friendly paint products. In this wok, a natural wall paint (NWP) was prepared by utilizing a natural clay material "sericite" as a main component. A small chamber test was carried out to identify the toxic substances release from NWP and the results were compared with two eco-friendly commercial paints. The total VOCs were detected in trace level inside the test chamber and their concentrations were below the recommended indoor air quality standards. Toluene was not detected for NWP, whereas formaldehyde was observed in trace level. The toxicity index results were compared with two commercial paints and found that NWP exhibited less harmful gas emission. Based on certification rating of building materials, NWP can be classified as the first grade of building materials. Due to the above advantages, the use of sericite as a major component in NWP will be a useful technique to maintain the indoor air quality.

• Korean Journal of Construction Engineering and Management
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• v.15 no.1
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• pp.101-110
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• 2014

The ministry of Land, Infrastructure and Transport announced that they launched the pilot project to offer Happy House built with modular construction as part of the major projects of incumbent government in 2013. The market size of modular construction is getting increasingly enlarged together with strong will of government. The major challenges that current modular construction encounters can be summed up as lack of standardization of material on the stage of design and fabrication. The portion of material costs in modular construction marks 16 to 17% higher than the existing other construction method, and account for 60 % of total construction cost, which is why material management is the most important factor. However, the imperfect standardization and specification on design causes high loss of materials on fabrication, which makes the construction wastes and total construction cost increasing in accordance with the increase of material costs. This study has been conducted to verify major modules by developing optimization algorithm on gypsum board material among wall finishing materials. It is expected that this paper contributes not only to eco-friendly construction by minimizing the waste factors of materials through these efforts, but also to removing high cost issues which had been recognized as a setback of current modular construction.

• Journal of the Korea Institute of Building Construction
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• v.11 no.5
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• pp.435-441
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• 2011

The life cycle assessment on greenhouse gas emission of reinforced concrete buildings shows that more than 70 percent of greenhouse gas that is discharged by a building is discharged in the building maintenance stage, including cooling and heating. To reduce the greenhouse gas emission, maintenance planning to minimize the energy consumption is necessary in the design stage. In this paper, two heat storage rooms are tested to save the air cooling energy of the buildings. The specimens are essentially identical, except that chamber A contained paraffin sheets as the finishing material, while the other, chamber B, served as a control. The test results show that chamber A with the paraffin sheets exhibited less temperature change than chamber B without the sheets when temperature was increased outside of the specimens. The heating energy was probably consumed in the phase change of the paraffin sheets, which can be useful for reducing energy consumption related to air cooling during the summer.

• Fire Science and Engineering
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• v.30 no.2
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• pp.7-18
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• 2016

This study evaluated the toxicity of the burning gas from the synthetic wood products used in housings or warehouses. The combustion products of five materials, viz. impregnated laminated board, MDF, Douglas fir plywood, core plywood, and Lauan retardant, were analyzed using SEM, FTIR and a Cone Calorimeter. For the Lauan retardant, 256,965 ppm of carbon dioxide ($CO_2$) and 1,475 ppm of sulfur dioxide ($SO_2$) were measured, which are 2.5 times and 3.6 times as high as their lethal concentrations of 100,000 ppm and 400 ppm, respectively. For the impregnated laminated board, 1,569 ppm of nitrogen dioxide ($NO_2$) was measured, which is 6 times as high as its lethal concentration of 250 ppm. For MDF, 795 ppm of ammonia ($NH_3$) was measured, which is higher than its lethal concentration of 750 ppm. As a result, most internal-finishes generated toxic combustion products at levels higher than their lethal concentrations, which underlines the importance of the selection and manufacturing of internal-finish materials.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.446-449
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• 2003

Recently, large residental buildings including high-rise apartment and a multi-business and commercial-residential building are appearing in the form of Korean construction work. According to this large-size trend a tenn and cost of construction works was largely increased. Therefore, studies of techniques construction management for successful project are lively being progressed. This study introduced Just-In-Time form and Lean Construction concept in order to establish management system of a house construction work taking up much portion on aspects of work scale and materials transportation in finishing works of high-rise residental building architecture. The process of house construction works will be analyzed with these two principles for productivity improvement and then the improvement plan will be suggested. This analysis and proposal can induce the flow of finishing works smoothly and contribute to success of project through saving of a tenn and cost of construction works.