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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Journal of Construction Engineering and Management
Journal Basic Information
Journal DOI :
Korean Institute Of Construction Engineering and Management
Editor in Chief :
Volume & Issues
Volume 7, Issue 6 - Dec 2006
Volume 7, Issue 5 - Oct 2006
Volume 7, Issue 4 - Aug 2006
Volume 7, Issue 3 - Jun 2006
Volume 7, Issue 2 - Apr 2006
Volume 7, Issue 1 - Feb 2006
Selecting the target year
A Basic Study for Developing the Construction Cost Index by Directly Surveying the Cost Input Structure in Korea - Focused on Highway Construction Projects -
Kim, Woo-Young ; Yi, June-Seong ; Lee, Young-Hwan ; Lee, Bok-Nam ; Kim, Yoon-Joo ;
Korean Journal of Construction Engineering and Management, volume 7, issue 2, 2006, Pages 53~61
Korean Government started to publish Korean CCI(Construction Cost Index) again at February 2004 since CAK(Construction Association of Korea) stopped publishing it 1994. CCI is developed using the verified statistical data, that is, input-output table and producer price index by Korean Bank and labor unit cost by CAK. Though the method is available as it uses the verified statistical data, there is a limitation to reflect the characteristics of construction. For overcoming this limitation, this study suggests CCI development method investigating the input structure of labor and material cost for each type of construction project and applying the cost variations of the items.
Improvement and Expected Effect of Construction Supervision System for Mix-Use Residential Building
Son, Bo-Sik ; Bu, Seung-Hyon ; Kim, Kyung-Whal ; Lee, Hyun-Soo ; Ryu, Han-Guk ;
Korean Journal of Construction Engineering and Management, volume 7, issue 2, 2006, Pages 62~70
As buildings are changing variously from the side of use, efficiency and size, the construction qualities are more importantly recognized. Supervision system was enacted in the Residential Building Law in 1990 and responsibility supervision system in the Construction Engineering Management Law in 1994, respectively. However, recently revised supervision system in 2003 has some limitations: the present problems of appointing supervisor, disposing the supervisors, supervisor's works. Therefore, the aim of this study is to improve the present supervision system for mix-use residential building. By implementing the proposed revised supervision system, it will be able to expect quality improvement, confidence of the owner and the user, development of construction technology, and increase international competitiveness of supervision company.
A Study on Concrete Curing Quality Management Based on Various Test of Construction Condition under Hot Weather Circumstance
Park, Shin ;
Korean Journal of Construction Engineering and Management, volume 7, issue 2, 2006, Pages 71~80
It is required to study systematical on the concrete quality management to extend structure life because rebuilding effect is reducing under present condition of large sized and high stories structure. Concrete, which shows its intensity by hydrating action and a big change in quality according to hot weather and temperature, produces a lot of quality problem under hot and cold weather. Because of each specification and construction plan which does not have basic standard on site, concrete's quality is irregular and makes some defect. As a result, Dae-gu is fumed out to be the longest area after investigating application period and days focused on 8 cities weather information about t relationship between hot weather circumstance and construction environment. Therefore, we first surveyed the curing construction processing in the region and found out the problem of quality management. Then figure out the way of solution. Moreover, we integrated curing quality management, which is applied differently to each site, to have equal quality and to reduce defect from construction site. And then, based on various test of construction condition and analysis of quality management item, we suggest effective concrete quality management to make curing construction standard guide and plan under hot weather.
A Analysis of the Weight for the Required Performance Items of Building Elements in the Apartment Housing
Han, In-Taek ; Han, Ju-Yeoun ; Chun, Jae-Youl ; Shin, Dong-Woo ; Kim, Kyung-Rai ;
Korean Journal of Construction Engineering and Management, volume 7, issue 2, 2006, Pages 81~88
User's requirements are rapidly diversed by economic and social changes. Architect, however, doesn't well reflect user's required performance on the drawings in practical business, so that it causes many change orders. For this reason, this paper identified user's requirements through extensive literature review and convert users' requirements into the performance items in order to measure the weight through the survey from users and experts. The purpose of this paper is to provide a guidance for design through the comparing and analyzing the user's weight and expert's weight.
A study of Construction Management for the Application to the Residential Environment Improvement Project
Lee, Jeong-Bok ;
Korean Journal of Construction Engineering and Management, volume 7, issue 2, 2006, Pages 89~97
With the increased demand on housing quality and effective urban redevelopment, a new paradigm in reconstruction project is in need. Especially, the Urban and Residential Environment Improvement Law which initiated on July 1, 2003 has become a significant turning point. This code is expected to function as a consistent and systematic measure. This study will examine the code's major concepts and methods to progress reconstruction projects effectively. The application of construction management is examined carefully since the new code requires renewal project consulting firms to function as a professional complement rather than simply perform administration work, as in the past. Also, construction managing methods that can be related to renewal project consulting are examined and speculated. Lastly, methods to improve efficiency in reconstruction projects are introduced through case study and analysis on applicability and expected results.
Strategies for Domestic Construction Engineering Companies to go into the Vietnam
Shin, Eun-Young ; Park, Hwan-Pyo ;
Korean Journal of Construction Engineering and Management, volume 7, issue 2, 2006, Pages 98~108
The cost of construction engineering field is less than
of the gross construction cost, it, however, is very important because the performance of final facility depends on the technical ability of construction engineering company. However, as the results of the technical level of domestic construction engineering survey from experts, it was less than 70% of developed country. For this reason, domestic construction engineering companies are confronted with serious problems to go into overseas market. Accordingly, this research analyzed the construction engineering market trend of domestic and overseas in order to suggest the strategies to go into the Vietnam. Moreover, this research identified problems and strategies of making inroads into the world market through the survey from the domestic construction company related to overseas construction, advanced a theory through extensive literature review, and collected extensive opinions through an interview with domestic and foreign experts and business trip. The purpose of this research is to provide market analysis and strategic plan for advancing into overseas market in order to make the domestic construction engineering companies to go into the Vietnam market. Especially, as a plan for the revitalization of advancing overseas market of domestic construction engineering companies, this research proposed Constructing Local Infrastructure, Business Creation of Planning Proposals and Enlarged Plans of ODA(Official Development Assistant).
Competitive Advantage Strategy of Construction Duration by SWOT Analysis
Kim, Sun-Kuk ; Lee, Hyun-Soo ; Ryu, Han-Guk ;
Korean Journal of Construction Engineering and Management, volume 7, issue 2, 2006, Pages 109~117
Recent rapid changes such as construction market reduction, lowest bidding system of construction cost, five days per week system, and post-construction sale system are inevitably accelerating the competitiveness between construction companies. Those rapid changes of construction environment require construction companies, which are main participants of construction industry, to adapt to the changes and more to lead new construction environment. However, there are many construction uncertainties which could delay construction completion. Without the proper identification of construction uncertainties, structured strategy establishment and management of construction schedule, the competitive advantages of construction duration could not be made. Thus this paper limited the research boundary to construction duration competitiveness instead of general strategy establishment. Recognizing the importance of proper calculation of construction duration, requirements of construction duration reduction and limited researches related to construction schedule strategy, we established the 25 strategies for construction duration competitivenss by internal and external construction environment analysis and SWOT analysis, and then elicited the first considerations to accomplish the strategies through concensus of all the staffs by questionnaire, brainstroming and face-to-face interviews.
A Study on the Selection Model of Retaining Wall Methods Using Support Vector Machines
Kim, Jae-Yeob ; Park, U-Yeol ;
Korean Journal of Construction Engineering and Management, volume 7, issue 2, 2006, Pages 118~126
There is a greater importance for underground work designed and built in the urban areas when it comes to considering the cost-effectiveness and the period of construction commensurate with an increasing trend of skyscrapers. At this stage of underground work, it's extremely necessary to choose a proper earth retaining method. Therefore, the study has suggested the rational retaining wall method by developing the support vector machine(SVM) model as a tool to choose a proper retaining wall method applied at the stage of selecting the earth retaining method. In order to develop the SVM model, the binary SVM classifier is expanded into a multi-class classifier. and to present the feasibility of our SVM model, we considered 129 projects. Applying the 'SVM Model' developed in the study to the designing and developing stages of the earth retaining work will contribute to the successful outcomes by decreasing any changes of design from implementing the earth retaining.
The Application of Data Warehouse for Developing Construction Productivity Management System
Oh, Se-Wook ; Kim, Myoung-Ho ; Kim, Young-Suk ;
Korean Journal of Construction Engineering and Management, volume 7, issue 2, 2006, Pages 127~137
Productivity is important to evaluate an efficiency of performed work and organization in construction industry. The productivity should be defined as activity level rather than macro level in order to effectively use productivity data and manage a project. The primary objective of this study is to develop a construction productivity management system using data warehouse, OLAP and data mining technologies which enables to easily accumulate the construction productivity data and perform multi layer analysis. Finally, it is anticipated that the effective use of the developed system would be able to measure the result of project and make a plan of the similar project with reliability.
A Study on Developing a Case-based Forecasting Model for Monthly Expenditures of Residential Building Projects
Yi, June-Seong ;
Korean Journal of Construction Engineering and Management, volume 7, issue 2, 2006, Pages 138~147
The objective of this research is to explore a more precise forecasting method by applying Case-based Reasoning (CBR). The newly suggested method in this study enables project managers to forecast monthly expenditures with less time and effort by retrieving and referring only projects of a similar nature, while filtering out irrelevant cases included in database. For the purpose of accurate forecasting, 1) the choice of the numbers of referring projects and 2) the better selection among three levels ? which include a 20-work package level, a 7-major work package level, and a total sum level analysis, were investigated in detail. It is concluded that selecting similar projects at
out of the whole database will produce a more precise forecasting. The new forecasting model, which suggests the predicted values based on previous projects, is more than just a forecasting methodology; it provides a bridge that enables current data collection techniques to be used within the context of the accumulated information. This will eventually help all the participants in the construction industry to build up the knowledge derived from invaluable experience.
A Study on Development Strategies of the Construction Machinery Industry in Korea
Youn, Jae-Woung ;
Korean Journal of Construction Engineering and Management, volume 7, issue 2, 2006, Pages 148~161
This study aims at surveying the current competitive position of our construction machinery industry in the international market. We will then reveal the critical issues by applying a SWOT analysis and a Delphi research from the viewpoint of strategic planning. At the same time, policy alternatives are also sought after as contributory tools to resolve the strategic issues demonstrated in this analysis and research.
A Study on the Applicability of Neural Network Model for Prediction of tee Apartment Market
Nam, Young-Woo ; Lee, Jeong-Min ;
Korean Journal of Construction Engineering and Management, volume 7, issue 2, 2006, Pages 162~170
Neural network analysis is expected to enhance the forecasting ability for the real estate market. This paper reviews definition, structure, strengths and weaknesses of neural network analysis, and verifies the applicability of neural network analysis for the real estate market. Neural network analysis is compared with regression analysis using the same sample data. The analyses model the macroeconomic parameters that influence the sales price of apartments. The results show that neural network analysis provides better forecasting accuracy than regression analysis does, what confirms the applicability of neural network analysis for the real estate market.
Conflicting Factors in Korean Construction Industry
Acharya Nirmal K. ; Lee, Young-Dai ; Kim, Jung-Ki ;
Korean Journal of Construction Engineering and Management, volume 7, issue 2, 2006, Pages 171~180
Change is inevitable and is a reality of construction projects. Most construction contracts include change clauses and allowing contractors an equitable adjustment to the contract price and duration caused by change. However, the actions of a contractor can cause a loss of productivity and furthermore can result in disruption of the whole project because of a cumulative or ripple effect. Because of its complicated nature, it becomes a complex issue to determine the cumulative impact (ripple effect) caused by single or multiple change orders. Furthermore, owners and contractors do not always agree on the adjusted contract price for the cumulative impact of the changes. A number of studies have attempted to quantify the impact of change orders on project costs and schedule. Many of these attempted to develop regression models to quantify the loss. However, regression analysis has shortcomings in dealing with many qualitative or noisy input data. This study develops ANN models to classify and quantify the labor productivity losses that are caused by the cumulative impact of change orders. The results show that ANN models give significantly improved performance compared to traditional statistical models.