• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.203-211
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• 2009

Korean public owners who order public multi-family housing construction projects have yet to gain access to a model for predicting construction cost. For this reason, their construction cost prediction is mainly dependent upon historic data and experience. In this paper, a cost-prediction model based on Case-Based Reasoning (CBR) in the design phase of public multi-family housing construction projects was developed. The developed model can determine the total construction cost by estimating the different Building, Civil, Mechanical, Electronic and Telecommunication, and Landscaping work costs. Model validation showed an accuracy of 97.56%, confirming the model's excellent viability. The developed model can thus be used to predict the construction cost to be shouldered by public owners before the design is completed. Moreover, any change orders during the design phase can be immediately applied to the model, and various construction costs by design alternative can be verified using this model. Therefore, it is expected that public owners can exercise effective design management by using the developed cost prediction model. The use of such an effective cost prediction model can enable the owners to accurately determine in advance the construction cost and prevent increase or decrease in cost arising from the design changes in the design phase, such as change order. The model can also prevent the untoward increase in the duration of the design phase as it can effectively control unnecessary change orders.

• 한국도로학회논문집
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• 제20권2호
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• pp.45-55
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• 2018

PURPOSES : This study aims to survey and analyze the status of the design and completion documents output delivery system in public construction projects in order to assess the problems of the Ministry of Land, Infrastructure and Transport (MOLIT)'s electronic delivery system, with a focus on roads and rivers, and to offer improvement measures. METHODS : This study first surveys and analyzes laws and existing study trends with regard to the design and completion documents output delivery system in public construction projects. It further analyzes the status of the output delivery system in public construction projects, including roads, rivers, expressways, water resources, and railroads. In addition, a comparative analysis of the current electronic delivery system of MOLIT and Korea Expressway Corporation in the road field is conducted, and the problems and improvement measures for MOLIT's electronic output delivery system are presented. This study seeks to analyze problems and prepare improvement measures with regard to road and river public construction projects, as ordered by MOLIT's five regional offices. RESULTS : This study sought to prepare the electronic output delivery system with regard to public construction projects and present the analysis of its major problems and improvement measures in four categories: "the preparation of electronic design documents output delivery system improvement measures including inspection and delivery," "preparation of guidelines, systems, etc., concerning electronic design documents," "preparation of improvement measures for the construction project management system and electronic design document support tools", and "linking of MOLIT's electronic output delivery system with relevant agencies and the expansion thereof to local governments." CONCLUSIONS : This study analyzed the current status and problems of the MOLIT's electronic output delivery system in the field of road and river construction projects, and presented corresponding improvement measures. This study is expected to address the problems of the MOLIT's electronic output delivery system, and to provide the foundation for the preparation of an efficient electronic output delivery system for design and completion documents. In addition, this study is expected to boost the quality and utilization of the electronic design documents output, and to exchange, share, and link construction information among relevant agencies so as to prepare the foundation for sharing construction information.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2006년도 정기학술발표대회 논문집
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• pp.310-316
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• 2006

Since 'Act on Private Participation in Infrastructure' were changed in January 2005, BTL(Build-Transfer-Lease) projects of Private Participation in Infrastructure was introduced in the domestic construction market for the purpose of providing public facilities with the public. Selecting the most qualified Promoter should be considered discreetly in BTL projects because BTL projects is for projects with approximately thirty year project life cycle, plan, construction, operating, maintenance and obviously the success of the project totally depends on the capability and role of Promoter. However, score for cost is likely to influence selecting Promoter to take the project. Accordingly, low bid contract with too much competition could decrease the quality of the construction plan and operating plan. Thus, this study did preliminary research and documents on problems of evaluation criteria for selecting Promoter in BTL projects, and proposed improvement factors by doing questionnaire over specialists of each field.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.712-713
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• 2015

In recent years, the bid-rigging in public construction markets has been treated as a critical issue in Fair Trade Commission. The investigation revealed that the collusion was implemented extensively in every area from the material supply to the construction service of general contractors. This study reviewed the causes of the bid-rigging in public construction projects, and proposed the improvement plan to eradicate bad practices. Firstly, the causes and purposes of bid-rigging were categorized into two types of internal factors from construction companies and external environment factors influencing business activities. Secondly, the system development method was explained to detect the signs of bid-rigging based on the technical proposal documents in open tender. The detection systems of repetitive public owner also provide the function of sharing data on the companies and cases to violate the fair trade regulation. In addition, the problems and improvement direction of public procurement policies were discussed.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1440-1445
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• 2009

Clients demands have been changed by construction circumstances such as high-technology, megaprojects, and the complexity of construction. Advanced foreign nations have already introduced and applied new project delivery systems (i.e, CM, DB, etc.) to deal with the change of such that. Korea has also promoted variation of the delivery systems for the progressive measure to the rapid changeable situation. Even though government has made his efforts as stated above, some clients have uniformly used those to public construction projects. That is because there are not selection criteria of project delivery system for clients. Therefore, this study presented the selection criteria of project delivery system based on project types in the public large construction projects. In addition, the study has verified the viability of the presented models through consultation with professionals and experts.

• 한국건설관리학회논문집
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• 제19권1호
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• pp.12-20
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• 2018

건설사업은 사회적 그리고 경제적으로 파급효과가 크기 때문에 프로젝트 추진과정 중 다수의 민원이 발생된다. 이와 같은 현실에서 건설사업을 성공적으로 완료하기 위해서는 계획 및 설계과정에서 민원요인을 분석하고, 민원을 최소화하기 위해서 노력해야 한다. 본 논문은 건설사업의 민원을 평가하기 위한 민원분류체계를 제시하고, 민원분류체계를 바탕으로 설계기능을 개선하여 민원을 최소화하는 것을 목적으로 한다. 논문목적 달성을 위해 연구과정에서는 1) 건설사업 유형별 특성에 따른 민원요인을 분석하고; 2) 민원요인을 기반으로 민원분류체계를 개발했으며; 3) 민원분류체계를 체크리스트로 사용하여 설계대안 창출을 위한 절차를 제시했다. 사례분석에서는 실제 건설사업 설계를 대상으로 민원사전예방을 위한 설계대안을 창출하여 민원대응수준을 향상시켰다.

• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.364-367
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• 2011

The levels of unemployment and poverty are extremely high and two of South Africa's most pressing problems. There is also a widely acknowledged need for housing and municipal infrastructure (water supply, sewerage, streets, storm water drainage, and electricity, refuse collection). From a theoretical perspective supported by experience elsewhere in Africa, there are reasons for considering that properly formulated employment creation programmes based on the use of labour-intensive methods could be established to construct and maintain the required physical infrastructure, thus creating employment, skills and institutional capacities. Over the past 30 years several projects have been initiated in South Africa to counter unemployment and poverty. Given the socio-economic conditions and political objectives (regarding development, employment creation and alleviation of poverty), it is anticipated that future large-scale construction projects will be proposed by the public sector (National, Provincial and Local Government). The paper will first examine the main tenets of the implementation of development projects through the use of labour-intensive construction and a description of progress elsewhere in Africa and their potential contribution which public works programmes could make to alleviate the poverty and unemployment problems. The research will then analyse the successes and challenges that have been experienced in South Africa in relation to the implementation of development projects over the past 30 years. The paper closes with recommendations and lessons for the future.

• 한국산학기술학회논문지
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• 제15권12호
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• pp.7364-7371
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• 2014

건설공사 사후평가는 공공건설사업 수행성과를 평가하고 차후 유사사업 추진 시 이를 활용하여 공공건설사업 효율화에 기여하기 위한 제도이다. 건설공사를 계획하는 과정과 공사완료 후의 공사비, 공사기간, 수요, 효과 등에 대한 예측치와 실제치를 종합적으로 분석, 평가하여 시행의 효율성을 도모하는데 목적이 있다. 이를 통해 방만한 사업추진을 방지하고, 유사 건설공사의 품질 및 효율성 향상을 위한 자료로 활용하고 있다. 하지만, 건설공사 사후평가 자료를 유사 건설사업에 참조 및 활용하기 위해서는 건설공사 사후평가 결과정보에 대한 체계적인 관리가 필요하다. 따라서 본 연구는 발주청별로 실시하고 있는 건설공사 사후평가의 결과정보를 체계적으로 통합 관리하고, 활용할 수 있도록 국토교통부에서 고시한 건설공사 사후평가 시행지침을 기초로 하여 건설공사 사후평가시스템을 구축하였다. 이를 통해 공공 건설사업의 수행 시 유사 건설사업의 수요 증감, B/C 비율 등 결과정보의 참조 활용을 통해 품질 향상 및 효율적인 사업 추진이 가능한 기반을 마련하였으며, 향후 사후평가 결과정보의 체계적인 관리를 통해 종합적인 분석 및 평가 등 유용한 도구로 활용될 수 있으리라 기대된다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2021년도 봄 학술논문 발표대회
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• pp.279-280
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• 2021

The conflict is gradually increasing and becoming more serious in Korea. Especially, there are many conflict among stakeholders in public construction projects and its economic, social effects are enormous. This negatively affects the performance of construction projects, such as schedule delay and increasing construction costs. Complaints are often extended to public conflicts so that complaints have to be considered for conflict management. However, complaints and conflicts were distinguished and have been studied differently in previous studies. In this research, the literature that analyzed complaints and conflict factors was reviewed, and the complaint that included the conflict factors were categorized and derived.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2008년도 정기학술발표대회 논문집
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• pp.509-512
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• 2008

건설공사는 복잡화, 다양화, 대형화되고 있으며 이러한 다변화된 건설 환경에 대응하기 위해 건설 선진국에서는 다양한 발주방식을 도입 적용해 오고 있다. 국내에서도 지속적으로 발주제도를 개선해 오고 있으며, 최근에는 공공건설공사의 발주방식을 보다 다양화하려는 취지에서 국가계약법시행령 개정을 통해 "기술제안입찰", "설계공모 기술제안입찰"을 새로 도입하였다. 하지만 이러한 정부의 노력과는 달리 몇몇 발주기관에서는 발주방식 선정기준 부계로 인해 공공건설공사에 있어서 획일적인 발주방식을 적용하고 있다. 이에 본 연구는 공공기관에서 기 발주된 건설공사 실태 및 현황분석과 설문조사를 통하여 발주방식 적용에 있어서의 문제점을 도출하고, 개선방안으로 발주기관이 객관적인 자료로 활용할 수 있는 사업유형별 발주방식 선정기준을 제시하고자 한다.