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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 14, Issue 6 - Nov 2013
Volume 14, Issue 5 - Sep 2013
Volume 14, Issue 4 - Jul 2013
Volume 14, Issue 3 - May 2013
Volume 14, Issue 2 - Mar 2013
Volume 14, Issue 1 - Jan 2013
Selecting the target year
Analysis of Correlation between Construction Business and Insolvency of Construction Company
Seo, Jeong-Bum ; Lee, Sang-Hyo ; Kim, Jae-Jun ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 3~11
DOI : 10.6106/kjcem.2013.14.3.003
The changes in construction business have impact on overall operation of construction companies. Poor business of construction companies following a s low industrial cycle could have broader implications and influences on the industry. Since a construction project involves various stakeholders including public organizations, financial institutions and households, a downturn in construction industry might lead to significant economic loss. In this regard, it is meaningful to examine the relationship between changes in construction business cycles and insolvency of construction companies. This study conducts an empirical analysis of the relationship between construction business cycles and how much they affect operation of construction companies. To this end, KMV model was used to estimate probability of bankruptcy, which represents business condition of a construction company. To examine construction business cycles, investment amount for different construction types-residential, non-residential, and construction work-was used as a variable. Based on the investment amount, VECM was applied and the analysis results suggested that construction companies should put priority on diversifying project portfolio. In addition, it was shown that once a construction company becomes unstable in business operation, it is hard to recover even when the market condition turns for the better. This suggests that, to improve business operation of a construction company, internal capacity-building is as important as the market condition and other external circumstances.
Suggestions on Efficient Cost Management for Public Construction Projects - Focused on Total Project Cost Management System-
Chang, Chul-Ki ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 12~21
DOI : 10.6106/kJCEM.2013.14.3.012
Total Project Cost Management System(TPCMS) was introduced with the purpose of increasing the efficiency of cost control for public construction project in 1994. In this paper, general perception of participants of the public construction project on the TPCMS was examined, and the problems in implementing the TPCMS was figured out through expert interviews and survey. Then better ways to implement the system were drawn based on the problems. To effectively manage the cost of public construction project, basically project cost should be estimated accurately in planning stage and managed based on it to have a project complete within the budget. In addition, the cost need to be managed in more systematic ways in terms of data collection and analysis, and the autonomy in managing the project cost given to the project owner needs to be expanded. Most of all, proper budget should be provided to prevent a project from delay through setting the priority of projects and proper budget allocation based on the priority.
A study on Risk-based Bridge Performance Evaluation Method for Asset Management
Choi, Hyun-Ho ; Sun, Jong-Wan ; Park, Kyung-Hoon ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 22~32
DOI : 10.6106/kJCEM.2013.14.3.022
Generally, asset management procedure consists of exact information collection, decision of service level, analysis of aspiration level, analysis of financial condition and available budget, preparation of asset management plan, and value of modified asset. In this study, for the risk-based asset management, condition assessment and performance measuring, assessment of failure modes and risks, evaluation/selection of treatment options, and implementation of optimum solution are additionally included. For this, bridge inventory and performance measure considering risks are classified and method of quantitative/qualitative performance measure is suggested. Also, evaluation method of risk analysis for bridge asset management is suggested and basic research is carried out for applicable method of risk-based asset management. Using suggested risk procedure and method of risk-based bridge service level evaluation, it is possible to perform resonable asset management. Moreover, it is concluded that the proposed applicable method of risk-based asset management will provide a solution to contribute the development of systematical asset management for optimal decision making and prototype asset management system.
Invention Methodology of High Strength Insulated Steel Stud using TRIZ
Cho, Bong-Ho ; Kim, Sun-Sook ; Kwak, Chai-Eun ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 33~41
DOI : 10.6106/kJCEM.2013.14.3.033
This study used TRIZ methodology to develop a new steel stud for load bearing or non-load bearing walls. Technical contradiction of high strength with high insulation performance can be solved by TRIZ. We suppose a new shape of high-strength insulated (HSI) Stud. This study showed TRIZ can be usefully applied to the development of new construction materials by solving technical contradictions. Insulation performance of HSI stud can be improved approximately 12% compared to the standard KS stud. Although up to 3.9% of the flexural strength degradation is expected, compressive strength of HSI studs are improved from 4.1% to 8%. In conclusion, improved thermal performance and higher strength can be expected for the HSI stud developed using TRIZ.
Development of an Approximate Cost Estimating Model for Bridge Construction Project using CBR Method
Kim, Min-Ji ; Moon, Hyoun-Seok ; Kang, Leen-Seok ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 42~52
DOI : 10.6106/kJCEM.2013.14.3.042
The aim of this study is to present a prediction model of construction cost for a bridge that has a high reliability using historical data from the planning phase based on a CBR (Case-Based Reasoning) method in order to overcome limitations of existing construction cost prediction methods, which is linearly estimated. To do this, a reasoning model of bridge construction cost by a spreadsheet template was suggested using complexly both CBR and GA (Genetic Algorithm). Besides, this study performed a case study to verify the suggested cost reasoning model for bridge construction projects. Measuring efficiency for a result of the case study was 8.69% on average. Since accuracy of the suggested prediction cost is relatively high compared to the other analysis methods for a prediction of construction cost, reliability of the suggested model was secured. In the case that information for detailed specifications of each bridge type in an initial design phase is difficult to be collected, the suggested model is able to predict the bridge construction cost within the minimized measuring efficiency with only the representative specifications for bridges as an improved correction method. Therefore, it is expected that the model will be used to estimate a reasonable construction cost for a bridge project.
A Framework Integrating Cost and Schedule based on BIM using IFC
Lee, Jin-Gang ; Lee, Hyun-Soo ; Park, Moonseo ; Jung, Minhyuk ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 53~64
DOI : 10.6106/kjcem.2013.14.3.053
In building construction project, there are numerous information or data parts across many different software applications and professional specialists. BIM (Building Information Modeling), as a medium for managing information generated during construction project, it is intended to enhance the effectiveness of construction management and reap a lot of advantages such as, automatic quantity takeoff, error-free estimation, 4D(3D+Time), 5D(4D+Cost) simulation. Nevertheless, the overall and practical effectiveness of BIM utilization is difficult to justify at this stage. While helpful, there are some limitation when BIM applied to construction management due to the differences of data processing process between BIM and work in the field, limitations of information generated from BIM object and interoperability problem among BIM application. Therefore, this paper propose a framework integrating BIM with cost-schedule information using IFC. And we construct the system prototype based on the framework and performed case study to examine the framework. The proposed framework provides the information basis for BIM based cost-schedule integration. ultimately, the framework increase the utilization of BIM and work efficiency of construction industry by supporting an understanding of information.
Dynamic Strategies for Enhancing Apartment Brand Equity in Korean Housing Market
Choi, Minji ; Park, Moonseo ; Lee, Hyun-Soo ; Hwang, Sungjoo ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 65~77
DOI : 10.6106/kjcem.2013.14.3.065
Apartment brand has been used as a new strategy in Korean housing market to fulfill customer`s changing needs for buying houses. A number of construction companies have succeeded in brand awareness and image building, however, they still struggle to establish brand loyalty and manage brand equity elements in balance. The purpose of this study is to analyze the brand equity building process of apartment products in Korean housing market and determine causal relationships among variables to propose strategies for long-term prosperity of the construction companies. System Dynamics modeling method is applied to describe how variables affect and are linked to each other in terms of building equity and enhancing company profits from customers` brand awareness to brand loyalty. Based on the analysis model, strategies for construction companies depending on their market share were proposed and this may support the company to achieve financial success and competitiveness among its competitors in the fast-changing market.
Education Efficiency Analysis of Architectural Design Firms Using a Combined AHP and DEA Model
Seo, Hee-Chang ; Oh, Jung-Keun ; Kim, Jae-Jun ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 78~87
DOI : 10.6106/kJCEM.2013.14.3.078
The modern society has been drastically changed from the industrial economic society to the knowledge based society, to catch up with the knowledge and the change of technology required for the modern people, the people can not live in the modern society without the continued study or education. In case of architectural design firm, it is concentrating on the productivity of enterprise by cultivating the working level through the self education focused on the improvement of inner capacity. In connection with this, the efficiency of enterprises are analyzed by carrying out the Data Envelopment Analysis(DEA) utilizing the financial ratio index in the various field of industries recently, the analysis study for the efficiency utilizing DEA is increased in the construction industries as well. However, in case of construction industries, the study focused on the efficiency of administration only has been progressed, it is the real situation that the approach for the analysis of education efficiency of each enterprise is very insufficient. Therefore, this study analyzed the education efficiency of architectural design firm after the selection of input and output variables by utilizing the DEA model and utilizing the AHP analysis technique by deducting the variables through the preceding study in relation to the education efficiency and the interview with the specialists.
Concept and Structure of Parametric Object Breakdown Structure (OBS) for Practical BIM
Jung, Youngsoo ; Kim, Yesol ; Kim, Min ; Ju, Taehwan ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 88~96
DOI : 10.6106/kJCEM.2013.14.3.088
Recent proliferation of building information modeling (BIM) has actively stimulated integrated utilization of geometric (graphic) and non-geometric (non-graphic) data. Nevertheless, physically and logically, linking and maintaining these two different types of data in an integrated manner requires enormous overhead efforts for practical implementation. In order to address this problem, this paper proposes a concept and structure of the object breakdown structure (OBS) that facilitates advanced BIM implementations in an automated and effective manner. Proposed OBS numbering system has secure rules for organizing graphic objects in full considerations of effectively integrating with non-geometric data (e.g. cost and schedule). It also removes repetitive linking process caused by design changes or modifications. The result of applying this concept to a housing project revealed that only 120 definitions controled over 6,000 graphic objects for full integration with cost and schedule functions.
A Study on Motivators of Green Construction of Major Contractors based on the Political Economy Approach
Kim, Jae-Hee ; Kim, Han-Soo ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 97~106
DOI : 10.6106/kJCEM.2013.14.3.097
The construction industry is now facing a new challenge of green construction. Based on a research question of "what motivates contractors to pursue green construction", the objective of this study is to identify and discuss key characteristics and implications of green construction motivators among major contractors. The Political Economy Approach was adpoted as a main research methodology. The study demonstrated that major contractors show a high level of expectation in the future of green construction and consider economic factors as higher motivators while paying attention to social trends towards green construction. In particular, internal economic motivators were highly considered and the commitment of senior management was viewed as a key motivator.
Comparative Analysis of Construction Productivity for Modernized Korean Housing (Hanok)
Kim, Min ; Kim, Yesol ; Lee, YunSub ; Jung, Youngsoo ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 107~114
DOI : 10.6106/kJCEM.2013.14.3.107
The interest in traditional Korean housing has greatly increasing in Korean housing market. However, it is difficult to wildly disseminate for a high construction cost reason. In order to effectively facilitate the Hanok construction, Korean government has initiated a project that develops a new style Korean housing, which meets the requirements of low cost and modernized life style. Cost of building is mainly affected by materials and construction methods. Hanok has some special commodities those significantly impact the cost. In order to effectively cut down the costs, well-organized planning for costs is very important. Also, improving the productivity by utilizing new materials and methods can result in cost down. In this context, this paper compared and analyzed two different types of Korean housing; one is a modernized Korean house which used new materials and methods, the other is a traditional Korean house which was build up by purely traditional methods. Productivity has also been compared and analyzed for 5 major commodities between two types of models. Based on these comparative data, effect of cost down by new model has been analyzed. As a result it is confirmed that by using the new materials and methods could highly effect to increasing productivity and cost down. Especially, the cost of Roofing have been more influenced by using new material while the Wood and Finishes have been influenced by new construction method. Construction cost of Foundation (Earthwork, Concrete, Masonry) and Openings were influenced both factors, changing of materials and methods.
Estimating Productivity of AL-Form Operation Using Web-CYCLONE System
Lee, Dong-Eun ; Kim, Yong-Woo ; Son, Chang-Baek ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 115~122
DOI : 10.6106/kJCEM.2013.14.3.115
Construction Standard Productivity Manual (CSPM) has been used for estimating the contract amount of public construction projects. CSPM has been annually either revised and/or newly enacted with high costs. Therefore, This study makes use of CYCLONE, which is a simulation modeling and analysis system specialized in construction operation, to improve the revising and enacting processes of CSPM. This paper presents the CSPM revision module that is an Add-in to Web-CYCLONE. The new module can be effectively used to incorporate the auxiliary tasks and the non-productive tasks into AL-Form operation model. The outputs obtained from the models using he CSPM revision module and from work sampling were compared to verify the usability of the add-in modules. This study verifies that the new module can effectively assist enacting and/or revising CSPM.
Evaluating the Economic Feasibility of Green Construction Projects using FiT and CDM Support Mechanisms
Koo, Bonsang ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 123~133
DOI : 10.6106/kJCEM.2013.14.3.123
Green infrastructure projects have the potential to reduce global warming and deliver sustainable energy solutions. Recently, the construction industry has been expanding their portfolios in New and Renewable (NRE) projects. However, the economic feasibility of NRE projects have not been validated and construction companies are not acquainted with their associated risks. This research performed a two-tiered feasibility study of the domestic projects registered for CDM in the UNFCCC. The first phase involved calculating the average IRR and NPV of the domestic CDM projects, which showed that their profitability to be very low. In the second phase, four NRE projects (Solar, Wind, Hydro, Landfill Gas) were selected and additional income generated from Feed-in-Tariff and CER sales were added to determine the improvements in the projects` IRR and NPV. Results indicate that Solar and Landfill Gas projects benefited the most from the two support mechanisms, while benefits to Wind and Hydro projects were minimal. While the Landfill Gas project had the highest IRR, the Wind project was the most investment attractive due to its NPV and minimal dependency on FiT and CER sales. Construction companies should enter into NRE projects with a long term view as related technologies mature.
Improving Road Construction Productivity by Developing a Programmatic Resource Distribution System for Equipment Sharing in Multi-sectioned Road Construction Projects
Koo, Bonsang ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 134~145
DOI : 10.6106/kJCEM.2013.14.3.134
Road construction projects are parcelled into sub-sections which are then tendered to individual contractors for construction. The type of work and equipments used are similar for each sub-section. However, such equipment are not shared on a regular basis among the contractors and only partially performed in an informal and ad hoc manner. Consequently, road construction equipment suffer from low utilization and increased leasing costs. Lean construction and Program Management approaches stress the importance of collaboration among individual participants in a way that increases the collective cost savings of the entire project. This research attempts to apply such theories with the notion that under utilization of expensive equipment can be improved by formalizing a way to enable the sharing of equipment in large, public sponsored, multi-sectioned road construction projects. A system was developed consisting of a set of criteria and processes that enables automatic allocation of equipment to multiple sites on daily basis, in a way that minimizes equipment costs and improves their individual utility. The system was then applied in allocating three different types of equipment to an actual road construction project with four sub-sections for three months. A new metric, nDPR showed that utilization improved for all equipment and also equipment related costs were decreased by 4.45%. Results also showed that increased shared opportunities of equipment correspond to an increase in utilization and cost savings.
The Analysis of Waste Factors for Business Phases on Customized Apartment Project
Choi, Jung-Im ; Lee, Ki-Suk ; Jung, Sung-Ho ; Song, Young-Woong ; Choi, Yoon-Ki ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 146~156
DOI : 10.6106/kJCEM.2013.14.3.146
Recently, to reflect the various needs of customers in the apartment field, the customized apartment has emerged. From the point of the customer, customized apartments have the definite advantage of being able to guarantee more customer options. On the other hand, from the point of the project manager, there are significant risk factors, with increase of management factors, construction delays, etc. The reasons for this are, to date, the insufficient systematic analysis of the project, and the lack of experience of similar projects. This study provides the waste factors of each phase in a customized apartment project. A survey and interview are conducted to achieve the waste factors using MUDA methodology; a process of the project was analyzed; and a factor of each process was identified. Also, AHP(Analytic Hierarchy Process) are used, to evaluate the waste factors in project stages. The AHP results show that "Design change" and "Inappropriate intervention in construction process" ranked highly in the waste factors. The results of our research will provide a countermeasure that addresses waste factors in similar projects, and contributes to reducing the extra cost and time in new projects.
An Extraction and Analysis of Problem Areas for BTL Projects from the Practical Perspective
Kim, Soo-Yong ; Son, Myung-Chan ; Yang, Jin-Kook ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 157~166
DOI : 10.6106/kJCEM.2013.14.3.157
Unlike conventional BTO(Build-Transfer-Operate) projects, this BTL project aims at fixing the financial deficiencies of the government and expanding infrastructure through private capital. It allows the government to attract private capital for the construction of public facilities such as schools and social welfare agencies for whom private users don`t need to pay, thereby bolstering national finance. BTL projects are causing a variety problems in progress. Therefore, we are required a practical approach to can improving a variety problems. In this study, we were derive the problem areas as follow. First, research data on the problem of domestic BTL projects, Second, high-performing foreign data analysis than domestic. And, we were analyzed to systematic management method for problem areas by using affinity techniques, matrix comparison analysis, AHP technique. Results of this study are expected provide management standards through real problem areas and the analyzing of relatively importance.
An Improvement Method through Build-Transfer-Lease (BTL) Problem Analysis from the Special Purpose Company (SPC) Perspective
Kim, Soo-Yong ; Son, Myung-Chan ; Yang, Jin-Kook ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 167~175
DOI : 10.6106/kJCEM.2013.14.3.167
In 2005, the government introduced BTL(Build-Transfer-Lease) projects as one of the methods of private investment in infrastructure. In a BTL project, a private company builds a public facility and leases it to the government to withdraw its invested capital. But there appear several problems with it due to a short period of preparation and lack of experiences. Specifically, private companies that plan to participate in this project have to take a risk since serious problems are likely to take place because of unrealistic estimation of construction costs, etc., and they finally avoid participating in this project. A case study was made over advanced countries, Japan and the United Kingdom, to find out how to resolve the problems, and rational 7 improvement method were presented from a perspective of Special Purpose Company (SPC), which could be accepted by both of SPC and government agencies. The findings of the study are expected to provide workable solutions to BTL projects from a standpoint of private companies to facilitate the rational improvement of BTL projects, and this study is ultimately expected to stimulate the active participation of SPC to make a contribution to the vitalization of domestic BTL projects.
Deduction of Change Management Factors and Weight Estimation based on ANP in Urban Renewal Project
Shin, Seung-Yoon ; Son, Myung-Jin ; Hyun, Chang-Taek ;
Korean Journal of Construction Engineering and Management, volume 14, issue 3, 2013, Pages 176~186
DOI : 10.6106/kjcem.2013.14.3.176
For urban renewal projects progressing in large scale, it carries a characteristic that frequently changes the environment, subject, law, plan and the like by a demand from various participants and internal/external factors. As such large-scale urban renewal projects have a lot of possibilities of change, it requires setting a plan to recognize the possible variable factors by each project operation stage and to manage it systematically by defining the variable factors on the basis of working process of the entire project. Therefore this research has produced a factor of main variable management based on working process for systematic variable management on the projects that inherent various possibilities of change as urban environment refurbishment projects. And it also suggests the status of main variable factors characterized by project operation stages quantitatively through reflecting external and internal features for variable factors produced from utilizing ANP methodology.