• Journal of the Korea Institute of Building Construction
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• v.10 no.4
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• pp.95-103
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• 2010

The purpose of this study is to propose a decision-making technique for selecting waterproofing methods using the Analytic Hierarchy Process (AHP) technique. In this study, a questionnaire survey was given to a group of specialists, which included design specialists, construction specialists, and maintenance specialists, regarding their experience with roof waterproofing methods. The 1st level hierarchy of the questionnaire survey addressed the function, economics, and maintenance of each of the roof waterproofing methods. The rank of 13 items of questionnaire, which is the 2nd level hierarchy of the questionnaire survey, is calculated using Expert Choice Solution. The analysis of questionnaire survey shows that each specialist selects different roof waterproofing methods, and all specialists make much of waterproof performance.

• Journal of the Korean Geotechnical Society
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• v.17 no.6
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• pp.53-67
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• 2001

In this study the pilot test of CGS as injection method by low slump mortar was performed and the results were analyzed in order to find out the application of this method and effect of settlement restraint. The site far pilot test is adjacent to apartments supported by pile foundations. Sand drain method was performed previously as countermeasures against settlement, but settlement occur continuously because this ground is very soft. Site investigations such as SPT, DCPT and vane shear test were performed to determine the characteristics of ground improvement. Field measurements and FDM analysis were performed on purpose to find out the displacement of ground during injection works. From the results of this study, CGS method can be optimized by the control of diagram, space, depth, injection material, and injection pressure. CGS improved soft ground compositely by the bearing effect of CGS columns and reinforcement of adjacent ground. Considering that increase of N value is about 2.1, CGS can be considered as an effective method to increase the bearing capacity as well as to stop the settlement of soft ground. It is also expected to be economic and effective in improvement of ground when it is used in applicable sites.

• Korean Journal of Construction Engineering and Management
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• v.7 no.6
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• pp.165-174
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• 2006

Recently, the architecture remodeling is rising as new alternative for activating the construction market as the interest toward life cycle of buildings has increased. But the reality is that current remodeling business is suffering various types of difficulties in its performance due to the absence of general management technology and factor technology in systematic performance procedure or evaluation, etc toward remodeling effect, evaluation on performance, imperfect system for reflecting user requirements and remodeling life cycle ; planning, $feasibility ^{\circ}\hat{E}designing^{\circ}\hat{E}construction^{\circ}\hat{E}management$ along with lack of overall understanding on remodeling. Accordingly, this research has attempted to search for an effective management method through overall understanding in project performance by presenting work procedure of remodeling project and analysis items for decision making, etc centered on early planning stage out of three stages called planning, designing and construction.

• 월간 기계설비
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• s.37
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• pp.24-33
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• 1993

우리 정부와 건설업계에서는 시장개방에 따른 국내 건설시장에 미칠 여파를 체계적으로 예측해 보는 등 그 대비책을 다각도로 모색하면서 한편으로는 해외진출 전략수립에 고심하고 있다. 국토개발원, 홍성웅 부원장은 $\ulcorner$우리나라 건설업의 국제 경쟁력은 외국 건설업에 비해 건설업체의 기술$\cdot$재무$\cdot$시공관리 능력과 자국 정부의 제도적$\cdot$정책적 지원 등 여러 측면에서 볼 때 아직도 취약하다$\lrcorner$면서 $\ulcorner$우루과이라운드 협상을 계기로 국내 시장에 안주하기 쉬운 안일한 자세에서 탈피하여 적극적인 진출전략의 모색을 통한 해외건설업 재도약의 발판을 구축함으로써 우리의 해외건설업에 새로운 지평을 열어 주어야 할 시점$\lrcorner$이라고 국토개발연구원에서 발행된 건설경제에서 밝혔다. 또 $\ulcorner$국제화$\lrcorner$에 따른 경쟁력 강화의 논의가 주요 현안으로 부각되는 현시점에서 기술우위의 경쟁력 강화와 해외건설제도의 재정비를 통한 우리나라 해외건설의 재도약을 위해서는 정부와 업계의 협조적 공동노력이 그 어느 때 보다 절실하다$\lrcorner$고 강조했다. 이와관련 본지에서는 건설경제에 게재되었던 국토개발연구원 박준천 소장의 $\ulcorner$해외건설 현황과 진로$\lrcorner$를 발췌 게재하기로 한다.

• 월간 기계설비
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• s.37
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• pp.34-50
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• 1993

우리 정부와 건설업계에서는 시장개방에 따른 국내 건설시장에 미칠 여파를 체계적으로 예측해 보는 등 그 대비책을 다각도로 모색하면서 한편으로는 해외진출 전략수립에 고심하고 있다. 국토개발연구원, 홍성웅 부원장은 $\ulcorner$우리나라 건설업의 국제 경쟁력은 외국 건설업에 비해 건설업체의 기술$\cdot$재무$\cdot$시공관리 능력과 자국 정부의 제도적$\cdot$정책적 지원 등 여러 측면에서 볼 때 아직도 취약하다$\lrcorner$면서 $\ulcorner$우루과이라운드 협상을 계기로 국내 시장에 안주하기 쉬운 안일한 자세에서 탈피하여 적극적인 진출전략의 모색을 통한 해외건설업 재도약의 발판을 구축함으로써 우리의 해외건설업에 새로운 지평을 열어 주어야 할 시점$\lrcorner$이라고 국토개발연구원에서 발행된 건설경제에서 밝혔다. 또 $\ulcorner$국제화$\lrcorner$에 따른 경쟁력 강화의 논의가 주요 현안으로 부각되는 현시점에서 기술우위의 경쟁력 강화와 해외건설제도의 재정비를 통한 우리나라 해외건설의 재도약을 위해서는 정부와 업계의 협조적 공동노력이 그 어느 때 보다 절실하다$\lrcorner$고 강조했다. 이와관련 본지에서는 건설경제에 게재되었던 국토개발연구원 박준천 소장의 $\ulcorner$해외건설 현황과 진로$\lrcorner$를 발췌 게재하기로 한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2016.07a
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• pp.265-267
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• 2016

건설사업의 원가절감은 사용자 요구에 부합되는 기능과 품질을 확보하면서 가장 경제적인 방법으로 시설물을 구축하는 것으로 건설환경 변화에 따른 경쟁력 향상을 위해서는 체계적인 원가관리를 통한 원가절감이 필요하다. 국토교통부 소속 산하기관에서는 공공건설사업의 수행에 따라 설계의 경제성 등 검토, 공정관리 및 사업관리 등을 통해 공사비 절감에 대한 많은 노력을 기울이고 있다. 현재 설계단계에서 설계VE 결과정보는 공공발주기관 간에 상호 공유하고 있으나, 시공단계에서의 원가절감사례 정보에 대한 공유는 아직까지 부족한 실정이다. 공공건설사업의 수행시 유사 건설사업에 대한 원가절감사례 정보를 참조 활용할 수 있도록 단계별 정보시스템 구축 및 원가절감 사례 정보서비스 방안을 제시하였다. 향후 공공건설사업의 기획, 설계, 시공, 유지관리 등 생애주기별 원가절감사례 정보의 분석 및 서비스를 통해 보다 합리적인 의사결정과 공공건설사업의 투자 효율성을 제고할 수 있으리라 기대된다.

• Journal of the Korea Institute of Building Construction
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• v.20 no.6
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• pp.537-543
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• 2020

The window cleaning works are manpower-dependent and are performed in an unstable posture at high altitude, so that there is a risk of falling. Therefore, there is an urgent need to improve the safety of workers. In this study, a conceptual design was proposed for the cleaning of exterior windows of a building, and the economic feasibility of the proposed conceptual model was analyzed. The proposed model is designed to avoid protrusions such as window frames, and to be able to respond even if the shapes of the upper and lower parts are different. As a result of analyzing the economic feasibility of the designed conceptual model, the benefit cost ratio was 4.48, which was significantly higher than 1. Therefore, the economic feasibility of the proposed window cleaning device is expected to be sufficient. The results analyzed in this paper will be used in the development and marketing of the window cleaning device.

• Journal of the Korea Institute of Building Construction
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• v.16 no.3
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• pp.271-278
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• 2016

In the case of South Korea, steel girder bridge (steel box or H-steel) and PSC (Pre-Stressed Concrete) girder bridge are the representative upper structures of railroad and road bridges. These structures account for 75% of the total bridge constructions and 80% of the total construction cost. Since the form work for concreting bridge slab is difficult, various construction methods developed and applied. However, several problems in those methods did not solve partially, including cost increase by material loss and rise of labor costs, quality deterioration by unskilled workers, increased construction time by complicated method, reduced productivity, safety accident by high place work, difficult transportation by big member, and rise of maintenance cost by material characteristic. Alternative method is needed to solve problems of as-is methods. Therefore, the purpose of this study is development of the purlin hanging system form for the girder bridge slab and its economic analysis. Through the findings of this study, it was verified that the purlin hanging system form is possible 60% reduction in cost and 80% reduction in time as comparison with conventional method.

• The Journal of the Korea Contents Association
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• v.19 no.9
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• pp.26-36
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• 2019

Since more than 30 different information systems are collecting and providing construction related information, it is difficult for information users to figure out where and how to acquire the required information. Even if the user find the information, it is hard to meet users demand. Because the current systems accumulate the data just as administrative data and can do not connect the information from the different phases of the lifecycle for the specific facility. The information collected and managed in different information systems should be integrated in terms of lifecycle of the facility to improve money for value of public investment, the quality of life by improving quality of the facility and to provide the foundation for big data utilization in the construction industry. This paper suggested strategic planning for the development of the (assumed name) "The Lifecycle Integrated Construction Information Portal" as a foundation to use the data in construction industry, by investigating prerequisites and suggesting conceptual framework of the system.

• Journal of the Korea institute for structural maintenance and inspection
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• v.25 no.2
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• pp.58-65
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• 2021

As increasing social needs of pavement maintenance, pattern frame method has been constructed in Korea. The pattern frame not only increases the skid resistance of pavements but also improve the scenery. However, construction of the pattern frame currently relies on imported materials. In this paper, we localize the materials used in pattern frame and conduct performance verification on them. The important performance indicators are the adhesion strength of undercoating materials and the skid resistance of finished pattern frames. The adhesion strength was targeted at 1.4MPa, and the localization alternative material met the target performance with 2.35MPa, the skid resistance performance was targeted at 40BPN, and the localization alternative material met the target performance with 75BPN. In the case of localized materials, approximately 40% cost reduction (per 1m²)compared to imported materials was confirmed.