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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 15, Issue 6 - Nov 2014
Volume 15, Issue 5 - Sep 2014
Volume 15, Issue 4 - Jul 2014
Volume 15, Issue 3 - May 2014
Volume 15, Issue 2 - Mar 2014
Volume 15, Issue 1 - Jan 2014
Selecting the target year
Evaluation of CM Capability based on Business Functions for International Plant Construction
Ha, Jiwon ; Jung, Youngsoo ;
Korean Journal of Construction Engineering and Management, volume 15, issue 6, 2014, Pages 3~15
DOI : 10.6106/KJCEM.2014.15.6.003
Ever expanding overseas construction is one of the most important issues for Korean construction companies. Among these issues, strategies for overseas plant construction have widely been discussed, because the plant construction has features of low competitiveness and high ripple effects when compared with other construction sectors. In this sense, the purpose of this research is to evaluate the CM capability of Korean construction industry for overseas plant construction. Fourteen construction business functions and four techniques were defined first. Based on these functions and techniques, CM capability was quantified for As-Is (2013), To-Be (2018) and Gap analyses. Findings of this research reveal that 1) capability for construction is quite competent, 2) capabilities for planning, design management, contracting, and risk management are found to be relatively low, where higher value can be added. In addition, it is found that R&D needs to be extended to develop systemized management techniques. It is also required to secure specialists and original technologies at national industrial level.
Development of Evaluation Factor of Certification System for Korean Green Road -Focused on Design/Construction Stage of Expressway and National Highway-
Park, Jae-Woo ; Lee, Du-Heon ; Koo, Jai-Dong ; Noh, Kwan-Sub ;
Korean Journal of Construction Engineering and Management, volume 15, issue 6, 2014, Pages 16~25
DOI : 10.6106/KJCEM.2014.15.6.016
Recent national policy agenda of 'Low-Carbon Green Growth' has been implemented as the important vision of the country. The government has set a target of entering the seven major world powers of Green Nation at 2020, and five major world powers at 2050. In order to achieve the goal, the reduction of greenhouse gases and the composition of green land and transportation has been promoted as an important policy. In a construction industry sector, policies and technologies for reducing greenhouse gas emissions and energy have been actively developed. In the case of developed countries, research for green road infrastructure has been conducted, which is the basis for certification system of green highway. This paper benchmarks the policies and cases of developed countries, verifies the applicability in the domestic road sector, and suggests the introduction of the certification system of green highway.
A methodology for an effective utilization of construction equipment for highway construction projects
Song, Hojeong ; Choi, Jaehyun ;
Korean Journal of Construction Engineering and Management, volume 15, issue 6, 2014, Pages 26~34
DOI : 10.6106/KJCEM.2014.15.6.026
Highway construction is a combination of linear, repetitive, and highly equipment intensive operations. Various types of construction equipment are deployed to ensure undisrupted performance of construction, and thus productivity improvement and cost-saving can be achieved through well-thought-out planning. The selection of construction equipment is dependent upon construction sequence, site conditions, and construction methods. In the process of planning, management should consider various types of construction methods per each type of construction operation. Also, management should map out proper construction equipment operation plan that takes the construction duration and cost measures into consideration. However, limited availability of historic data from the similar types of operations has been a stumbling block to proper construction planning, making the operations performed based upon experience and intuition guided by rules-of-thumb. As a consequence, the planing phase rarely provided an adequate validity in the implementation phase. The researchers developed a process logic for each construction type that management can utilize from early phase of highway construction planning process. Moreover, derived the construction equipment combination optimized for efficiency by using the process simulation technique. The developed method is expected to be useful for the decision-making process that aims to evaluate efficiency of various process plans and to ensure optimal selection of construction equipment for highway construction projects.
A Comparative Study on the Life Cycle Cost of Wall Type Apartment and Beam-Column Structural Apartment
Lee, Jeehee ; Kim, Kyuree ; Son, JeongWook ; Yi, June-Seong ;
Korean Journal of Construction Engineering and Management, volume 15, issue 6, 2014, Pages 35~43
DOI : 10.6106/KJCEM.2014.15.6.035
Ministry of Land, Infrastructure and Transport (MOLIT) promote long-life housing to reduce social costs generated by poorly considered rebuilding and extend the life-span of housing. Long-life housing has advantages of durability, floor plan variability, efficient maintenance and ease of remodeling because it is a beam-column structure building. However, long-life housing requires somewhat higher initial construction cost than wall type apartments. It makes increase of long-life housing more difficult. In this study, we compare between wall-type apartment and beam-column structure apartment from Life-Cycle Cost's viewpoint. As a result of the study, long-life housing incurs 18% higher initial cost than wall type apartment, but is 7% more economical than wall type apartment in terms of Life Cycle Cost. Therefore, it is shown that long-life housing could be a beneficial alternative to traditional wall type apartments.
Estimation of Project Duration by Probabilistic Linkage Evaluation Technique (PLET)
Kim, Seon-Gyoo ;
Korean Journal of Construction Engineering and Management, volume 15, issue 6, 2014, Pages 44~52
DOI : 10.6106/KJCEM.2014.15.6.044
Generally, the most difficult works at scheduling are to estimate the duration of activities and linkages between them because the possibility that the duration and linkages could be exposed to the uncertainties is so high. When estimating a project duration, therefore, the probabilistic estimation of the duration as well as the probabilistic estimation of the linkages between activities should be considered concurrently. The PERT that is one of the most popular techniques applied for the probabilistic estimation of a project duration can not consider the uncertainties of the linkages because it only estimates the probabilistic duration limited to 'FS0' relationship. The purpose of this study is to propose the new method "PLET" for stochastically estimating the project duration based on the probabilistic estimation of the BDM's relationships, and also provide more wide and various probabilsitic information about the project duration by it.
Study on Optimization for Construction Vertical Lifting with Transfer Operation for Super High-rise Buildings
Moon, Jooyong ; Park, Moonseo ; Lee, Hyunsoo ; Jung, Minhyuk ;
Korean Journal of Construction Engineering and Management, volume 15, issue 6, 2014, Pages 53~62
DOI : 10.6106/KJCEM.2014.15.6.053
Recently, the number of super high-rise building projects have been increased after recovering from international financial crisis. In super high-rise building project, vertical lifting is critical to overall project productivity, due to its limited lifting equipments. Also for projects which buildings' height are higher than 400m, transfer operation in lifting is inevitable because of lifts' maximum lifting height. In transfer operation, setting a transfer floor is essential for saving lifting time of resources. In this research, using discrete event simulation modeling with AnyLogic 7.0 software and metaheuristic optimization with OptQuest software, the method of optimizing a transfer floor for workers during the morning peak time is proposed. Comparing to the result of the case which transfer floor is designated to the middle floor, setting optimized transfer floor significantly decrease the total lifting time of workers. By using proposed simulation and optimization tool, saving budget and time through increasing available working hour is expected.
A Comparative Analysis on Generated Construction Waste Quantities in a Case Study for Deconstruction of an Apartment
Kim, Hyojin ; Kang, Leenseok ; Kim, Changhak ;
Korean Journal of Construction Engineering and Management, volume 15, issue 6, 2014, Pages 63~70
DOI : 10.6106/KJCEM.2014.15.6.063
Deconstruction of the building must be applied firstly in order to improve recycling and reuse of construction wastes. In this study have done a case study for deconstruction of an apartment. All construction waste(CW) which will be generated during deconstruction was examined in each part of the building. Because drawing did not exist in most of the old building, we drew up floor plans of buildings. After analyzing these drawings, estimated quantities of CW. It was measured working time of labor and equipments for deconstruction and general demolition on each building of the apartment. In addition, it was proposed in the volume and weight per unit after analyzing detailed measurement of CW which was generated in the process of deconstruction and traditional demolition. It suggested recovery rate at a site, volume and weight conversion factors, and waste basic unit per area that based on the results of comparative analysis on the amount of CW which is calculated from drawing and generated at a site. These factors will be used fundamental materials for estimating quantities and treatment cost of CW, and scheduling of works.
A Comparative Analysis of Hindrance Factors to Labor Productivity in Each Construction Site Using the IPA
Jeong, Jae-Ho ; Lee, Suk-Won ; Ahn, Byung-Ju ; Jee, Nam-Yong ; Kim, Jae-Ju ;
Korean Journal of Construction Engineering and Management, volume 15, issue 6, 2014, Pages 71~82
DOI : 10.6106/KJCEM.2014.15.6.071
Korea's labor productivity in construction sites is dependent on experience and act in accordance with the human element of the construction workers. In order to increase the work productivity of the construction site that requires a strategic management to potentially hindrance factors of labor productivity. However, without considering the potential problems, management of labor productivity in prior studies is focused only on the immediate problems. The purpose of this study is to compare the site-specific analysis of labor productivity impediments using easy IPA to identify potential causes. As a result of the analysis was to identify the realistic problems of job insecurity and poor working conditions as well as economic problems. It is expected that it is possible to provide the basic data to strategy suggestions for long-term labor productivity improvement of the construction site.
Evaluation of Environmental Stress for Highway Construction Project by Life Cycle Assessment Method
Moon, Jinseok ; Ju, Kibeom ; Seo, MyoungBae ; Kang, Leenseok ;
Korean Journal of Construction Engineering and Management, volume 15, issue 6, 2014, Pages 83~91
DOI : 10.6106/KJCEM.2014.15.6.083
The global community demands the reduction of environmental pollution such as greenhouse gas and carbon dioxide emissions. According to these requirements, the road construction project in the highest energy consuming industry is required the efficient way of reducing environmental pollution emissions. In this study, during the whole life cycle process, an environment impact assessment was performed for the several road construction projects in order to evaluate environmental stress through the road construction process. This study provides a proper process of environment impact assessment for life cycle assessment (LCA) analysis of road construction project, and figures the environmental stress regarding to the major construction materials for the case projects. In addition, this study conducted a sensitivity analysis for the key materials of environmental stress through the quantity analysis of major materials for the 1km section of a road construction. By this sensitivity analysis of total environmental stress change from the different volumes of constructing materials, it would be useful information for the environment impact assessment for the future road construction project.
Growth Model for Korean CM Firms based on 2012 Statistics
Jung, Youngsoo ; Shin, Dongwoo ; Kang, Seunghee ; Kim, Namjoon ;
Korean Journal of Construction Engineering and Management, volume 15, issue 6, 2014, Pages 92~104
DOI : 10.6106/KJCEM.2014.15.6.092
CM services have been increasingly practiced over the two decades in the Korean construction industry, and recent efforts focus on further development in advanced CM capabilities and expansion to overseas market. However, there has been lack of holistic research to investigate current status and future direction of CM industry in Korea. In this context, the purposes of this study are 1) to analyze current status of Korean CM industry in terms of owners, market, CM firms, contracts, and work scopes, 2) to define different types of CM practices, and 3) to propose growth models for Korean CM firms based on the defined CM project types. An extensive literature review and statistical analysis of 2012 CM contracts were performed in order to analyze the CM status. Based on the analyses, ten different CM types are defined, and growth paths of CM firms are illustrated. Implications and lessons learned during the statistical analysis and workshops are briefly introduced as well.
Influence of the Business Portfolio Diversification on Construction Companies' Financial Stability
Jang, Sewoong ;
Korean Journal of Construction Engineering and Management, volume 15, issue 6, 2014, Pages 105~112
DOI : 10.6106/KJCEM.2014.15.6.105
The objective of this study is to examine the relationship between the degree of business diversification of a construction company and two of the indicators that represent financial stability, namely, a current ratio and a debt ratio, in order to draw policy implications. The current ratio and the debt ratio were used as variables that represent financial stability of a construction company. Berry-Herfindahl Index was used to measure the degree of business portfolio diversification of a construction company. For the analysis, quarterly time series data were retrieved from the financial information disclosure system of Korea's Financial Supervisory Service for the period between the first quarter of 2001 and the third quarter of 2013. The analysis results showed that a higher current ratio and a debt ratio led to a greater extent of business diversification. A higher level of business diversification led to a higher current ratio and a lower debt ratio. It was also shown that the impact of business diversification on the current ratio and the debt ratio outweighed the impact of changes in the current ratio and the debt ratio on business diversification. Meanwhile, an increase in the level of business diversification showed a quite positive effect as it raised the current ratio and lowered the debt ratio of a construction company. These findings suggest that diversification of business portfolio is essential for construction companies to strengthen their financial stability.