• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2017년도 춘계 학술논문 발표대회
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• pp.58-59
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• 2017

Through the case study, we surveyed the performance of a CNC-T BAR system on irregular-shaped building construction project. By CNC T-BAR system, we mean a surface curvature control system has been used in aircraft and ship manufacturing by controlling entire surface points on shape. For the past 10 year, the number of irregularly-shaped building design and construction project has been increased, and also the studies on irregular-shaped construction methods have been conducted. However, the previous studies did not review on the performance of the CNC T-BAR system. We collected construction-completed cases in Korea, which applied the CNC T-BAR system, and we studied its performance by comparing with a segment system in terms of construction duration and its quality. The result shows that the CNC T-BAR system can shorten the construction duration comparing with segment-assembly system while maintaining high quality. The CNC T-BAR system is expected to apply on the more number of irregularly-shape building construction project.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2016년도 춘계 학술논문 발표대회
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• pp.237-238
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• 2016

Rework is a major cause that adversely affects the performance of a construction project, such as schedule delay or cost overrun. In order to prevent rework, research has been mainly conducted to analyze the cause of rework, but limited to quantitatively measure cost of rework and analyze its impact on project performance. Therefore, this paper aims to analyze impact of rework cost using 369 rework items collected from 3 construction site. This research is expected to accurately determine control target of rework and to improve efficiency of business operations in construction project.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2017년도 추계 학술논문 발표대회
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• pp.52-53
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• 2017

Through the case study, we surveyed an applicability of digital fabrication in irregular-shaped building construction project. By digital fabrication, we mean is a precision manufacturing method has been used in aircraft, ship and car manufacturing industry. We collected construction-completed "LotteWorld Tower Podium" project data and analyzed its process in terms of construction quality andduration. The result shows that digital fabrication is considered a competitive technology that enabled to complete the project in seven months within 3mm surface curvature threshold. The digitalfabrication is expected to apply on a number of irregular-shaped building construction project.

• 한국건설관리학회논문집
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• 제16권4호
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• pp.89-97
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• 2015

실시설계도서의 품질은 시공, 그리고 운영 및 관리단계에도 큰 영향을 미친다. 그리고 적절한 실시설계기간의 확보는 실시설계도서의 품질을 위해 중요한 요소이다. 따라서 이 연구는 2009년부터 2014년까지 조달청 맞춤형 서비스를 통해 발주된 총 42개의 건설프로젝트의 실시설계단계의 기간을 분석하였다. 분석에 의하면, 실제 실시설계기간은 계획 실시설계기간보다 1.33배에서 1.79배가 소요되었다. 계획 실시설계기간은 건설교통부 제2000-235호에서 고시하고 있는 방식대로 공사금액에 의해 산정하고 있었지만, 실제 실시설계기간은 공사금액과 아주 낮은 상관관계를 보였다. 이 결과를 토대로 실무자들과 인터뷰를 진행하였고, 공사금액이 실시설계기간과 낮은 상관관계를 보인 것은 이들에게 아주 잘 알려진 사실이었다. 그들은 공사의 복잡도, 설계변경의 정도, 그리고 발주처의 성향에 따라서 실시설계기간이 크게 좌우된다는 점을 언급하였다. 따라서, 실시설계도서의 품질을 향상시키기 위해서는 다양한 요소들을 실시설계기간 산정에 적용하여 적절한 기간을 산정해야하며, 고품질의 실시설계도서는 건설산업에 긍정적 효과를 불러일으킬 것으로 보인다.

• 한국건설관리학회논문집
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• 제4권3호
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• pp.146-152
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• 2003

건설프로젝트에 있어서 공사감독은 공정관리, 품질관리 안전관리, 원가관리에 중요한 영향을 미친다. 그러므로 건설공사의 초기단계에서부터 감독의 지속적인 관리활동이 필요하다. 그러나 국내 공공 건설공사에서 감독의 업무량과 비용에 대한 평가가 미비한 실정이다. 또한 공사 감독이 초기단계에서부터 지속적인 관리활동이 가능한지에 대해서도 회의적인 시각이 상존하고 있다. 본 연구에서는 우리나라 공공발주처에서 시행하는 공사의 감독 업무와 외국에서의 공사감독의 관리활동을 비교$\cdot$분석하였다. 또한 국내 건설공사에서 감독에 소요되는 비용과 감독을 대체한 감리원을 활용하였을 때의 비용을 평가하였다. 이를 통하여 향후 감독업무의 개선이 가능하고 비용적 측면에서 인건비 등 공사 간접비의 절감을 기할 수 있겠다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2012년도 추계 학술논문 발표대회
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• pp.129-132
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• 2012

Value Engineering(VE) process is going to make a series of improvements for the effective construction project management or optimal proposal to improve quality, performance improvement, cost reduction and customer satisfaction. For making the quality model based on better than the architecture that is required in the VE, such a project promoting creative plan, functionality and constructability reflecting the materials and improved construction methods and building life cycle for reviewing the smooth progress of the construction projects may be necessary for management techniques. This study is to establish a management plan in the educational facilities construction process through education institution's recent orders completed by VE case study.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.1239-1241
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• 2003

This paper presents the results of Landsat-TM imagery applications for detecting spatial variations of the water environments in the Saemankeum (STLR) project areas. The simulated tidal flow patterns from a two -dimensional hydro - dynamic model and water quality data from STRL project were used for relationships with the satellite data. Unsupervised classification of the tidal water body reflects the overall flow patterns at a flooding tide. Regressive equations for water quality parameters were derived and used for supervised classifications. The results were found to be useful to synoptically evaluate the water environments during the construction stages of the STLR project.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.1241-1241
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• 2022

In the current construction industry, difficulty arises in creating an adequate baseline schedule to establish a fundamental plan for construction. This presentation will present the research findings which investigated industry-recognized schedule metrics that aid in the successful implementation of said schedule. Industry organizations (Association for the Advancement of Cost Engineering, the Government Accountability Office, the Project Management Institute, and local city, state, and county government offices) provide standardized guidelines with specific metrics requirements to ensure successful implementation. However, most of those metrics are substantiated or validated in their effectiveness. The study examined the impact between these industry-recognized critical metrics and three distinct scheduling characteristics: Project Type, Project Duration, and Project Density (number of activities within a schedule). The research results showed that, among the 12 various schedules evaluated in parallel with 20 industry-recognized critical metrics, seven metrics substantially demonstrate a significant impact on a project schedule's success. Furthermore, six of the seven metrics directly correlate to at least one of the three scheduling characteristics outlined. As a result, this research has established more predictable outcomes based on impacts between three distinct project characteristics and 20 of the most discussed/researched critical scheduling metrics in the field. This allows management teams to have more confidence in establishing critical milestones and accurate turnover dates from the start of the project through its final completion.

• The Journal of Asian Finance, Economics and Business
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• 제7권12호
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• pp.1035-1043
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• 2020

Project manager plays a very important role in the success of any project. The primary duty of the project manager is to combine the outcomes or results of the various processes and activities of project management into a systematic project management strategy or plan for the project. In the construction industry, a lack of motivation is an urgent problem for many project managers in construction and engineering projects. Lack of motivation affects the quality and productivity of jobs, reducing profits and growth for companies, businesses, contractors or organizations that rely on human resources. The reasons for this lack of motivation are diverse ranging from salary to culture to life and working environment, among others. Through surveys and data analysis using Cronbach's Alpha reliability and EFA (Exploratory Factor Analysis), our research scaled the factors affecting work motivation of project managers in the construction industry in Vietnam. The research results identified six major groups of relevant factors including (i) salary and benefits, (ii) work environment, (iii) promotion opportunities, (iv) organizational culture, (v) interest in the job, and (vi) relationship with the organization. From there, this paper contributed useful information as well as measures for businesses, companies, contractors or organizations in the construction industry.

• 한국BIM학회 논문집
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• 제7권2호
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• pp.25-35
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• 2017

Building information modeling (BIM) can improve to communicate with project participants by early construction involvement (ECI) from the beginning of the project. Therefore, they can minimize design changes and improve design quality and construction. However, because there is insufficient research on the scope and application level of BIM according to project delivery system and project characteristics, construction companies have efficiently not been using the BIM. Therefore, this study intends to conduct basic research as a basis for confirming appropriate BIM application and level according to project delivery system and project characteristics. To do this, we investigated the project delivery system and project characteristics of domestic and foreign projects that have successfully applied BIM, and compare and analyze them based on BIM application and BIM level framework derived from theory reviews and experts. Therefore, this study can be used as a basis for strategically establishing the scope and level of BIM according to project delivery system and project characteristics through the result of this study.