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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 16, Issue 6 - Nov 2015
Volume 16, Issue 5 - Sep 2015
Volume 16, Issue 4 - Jul 2015
Volume 16, Issue 3 - May 2015
Volume 16, Issue 2 - Mar 2015
Volume 16, Issue 1 - Jan 2015
Selecting the target year
A Business Model for Application of the Modular Building in the Rental Market
Yoon, Jongsik ; Shin, Dongwoo ; Cha, Heesung ; Kim, Kyungrai ;
Korean Journal of Construction Engineering and Management, volume 16, issue 6, 2015, Pages 3~11
DOI : 10.6106/KJCEM.2015.16.6.003
The current real estate market is in a state that is considerably shrink due to the recession and long-term reduction of trading. In response, the government recently announced an innovative way for the middle-class residential housing and it is taking the lead to activate the real estate market. Meanwhile, the domestic housing market is entering a transition period, including structural changes of household structure, changes from joeonse to rent increasingly. Also single-member households will rise steeply, so that makes the high demand of small houses. In addition, the domestic construction industry is interested in new technology called Modular building. The Modular construction is an off-site construction system that shorten construction period, eco-friendly building technology and mobility etc, which can be used in various field. Overall, there are two major issues of the current market, one is the change of the real estate market, and the other is the modular construction. This study will propose modular business model in the rental market through the analysis the profitability of the modular business scenarios and IRR analysis.
A Study on Reconstruction and Remodeling's Selection Factors of Old Apartment Houses Using AHP
Son, Sung-Hyun ; You, Seung-Min ; Lee, Ki-Seok ; Choi, Yoon-Ki ;
Korean Journal of Construction Engineering and Management, volume 16, issue 6, 2015, Pages 12~21
DOI : 10.6106/KJCEM.2015.16.6.012
Reconstruction and remodeling have been introduced as a part of renewal (redevelopment) projects for old apartments built after the mid-1970's and government policies for revitalizing each project has been changed continually. However, the frequent changes of the policies have caused conflicts among business entities in selecting business methods. The conflicts from their early stages have made serious problems in the entire business process. Therefore, this study deduced factors of business selection by applying comparison analysis between the two business projects on how certain factors have an influence on selecting reconstruction and remodeling business projects. Based on the analysis, four categories and 26 factors were finally selected. After then, the priority of each selection factor was deduced through the AHP method used for analysis of relative importance and impact values regarding to the business selection. It is expected to resolve conflicts among owners and select rational directions for reconstruction and remodeling business, based on the conclusion through analysis of influence on selection factors.
Extraction of the Key Performance Indicators of Construction Management Using Balanced Score Card
Lim, Wooseok ; Jung, Jihyun ; Lee, Hakki ;
Korean Journal of Construction Engineering and Management, volume 16, issue 6, 2015, Pages 22~30
DOI : 10.6106/KJCEM.2015.16.6.022
Enterprises should set up realizable goals and continually control the goals from apprehending whether they can be realized or not so that the enterprises grow consistently. Furthermore, from supplementing parts to be improved, goals are reset and the result should be controlled in order to fit to them. Lately, a lot of discussions about the results of organizations, projects, and companies are being realized in construction field. Particularly, in construction management, effective and professional control activities throughout the life cycle of facilities as well as the stage of business implementation of construction work are needed. About the result measurement of the construction management, lots of most domestic researches stay in the level of establishing basic concepts. Also, since characteristics of the construction field and the construction management were not reflected properly, it is in a situation that the result control system is not applied to on-site real works. Hence, this study intends to suggest fundamental data for measuring objective results from extracting result areas and key performance indicators of the construction management using Balanced Score Card.
Types of Tenants Participation in Public Housing Maintenance Analysed by Q Method
Kim, Kyu-Bin ; Kim, Moon-Hyun ; Kwon, Tae-Whan ; Kim, Ju-Hyung ; Kim, Jae-Jun ;
Korean Journal of Construction Engineering and Management, volume 16, issue 6, 2015, Pages 31~40
DOI : 10.6106/KJCEM.2015.16.6.031
The public housing needs maintenance administration for improvement and retainment of residential condition by means of tenants participation. However, most researchers have considered tenants as passive participants in this context. The previous studies did not comprehend perspective of tenants participation and just measured the management preference and the level of satisfaction on maintenance. This study investigates the attitudes and perceptions of tenants on participation in public housing maintenance by introduced Q method that provides a systematic and rigorous quantitative means for examining human subjectivity. The subjectivity is classified as types according to cost and benefit factors by principal components analysis and varimax rotation of the extracted factors. As a result, this study present 5 types of tenants participation and expect to discuss desirable roles of tenant and org anization in public housing maintenance.
Remodeling Process Model Applying Service Life and Functionality Evaluation for Military Facilities
Cho, Jongwoo ; Lee, Hyun-Soo ; Park, Moonseo ; Kim, Jaegon ; Moon, Hyo-Soo ;
Korean Journal of Construction Engineering and Management, volume 16, issue 6, 2015, Pages 41~52
DOI : 10.6106/KJCEM.2015.16.6.041
The number of military facilities has been rapidly increased due to growing requirement of modernization and military welfare. However, adequate maintenance has not implemented to these facilities. As a result, they are deteriorated quickly and require performance enhancement treatments. There are two ways of performance enhancement, reconstruction and remodeling. Despite the research result that remodeling within the standard remodeling range is more economical, remodeling of military facilities is not considered equivalent to reconstruction as an option of performance improvement. Therefore, derived from the relationship between performance change during life cycle of building and range of remodeling needs, this study tries to propose Remodeling Process Model(RPM) which uses a method to choose remodeling in a Specific Point of Time(SPT) when remodeling is considered more economical than reconstruction. In addition, this study suggests practical service life and functionality evaluation standard together which require to realize the RPM. This RPM make it possible to avoid the cases that facilities which do not have any problem on structural reliability but have low level of functionality miss appropriate remodeling timing and inevitably choose reconstruction as a performance improvement option. It also present the possibility of simple reconstruction / remodeling decision-making for facility managers who administrate building having various type, compilation and elapsed time. Consequently, this process model focusing on remodeling more may contribute to reduce resource waste caused by reconstruction.
Advanced Time-Cost Trade-Off Model using Mixed Integer Programming
Kwon, Obin ; Lee, Seunghyun ; Son, Jaeho ;
Korean Journal of Construction Engineering and Management, volume 16, issue 6, 2015, Pages 53~62
DOI : 10.6106/KJCEM.2015.16.6.053
Time-Cost Trade-Off (TCTO) model is an important model in the construction project planning and control area. Two types of Existing TCTO model, continuous and discrete TCTO model, have been developed by researchers. However, Using only one type of model has a limitation to represent a realistic crash scenario of activities in the project. Thus, this paper presents a comprehensive TCTO model that combines a continuous and discrete model. Additional advanced features for non-linear relationship, incentive, and liquidated damage are included in the TCTO model. These features make the proposed model more applicable to the construction project. One CPM network with 6 activities is used to explain the proposed model. The model found an optimal schedule for the example to satisfy all the constraints. The results show that new model can represent more flexible crash scenario in TCTO model.
Development of a Safety and Health Expense Prediction Model in the Construction Industry
Yeom, Dong Jun ; Lee, Mi Young ; Oh, Se Wook ; Han, Seung Woo ; Kim, Young Suk ;
Korean Journal of Construction Engineering and Management, volume 16, issue 6, 2015, Pages 63~72
DOI : 10.6106/KJCEM.2015.16.6.063
The importance of the appropriate use and procurement of Safety and Health Expense has been increasing along with the recent increase of construction projects in height, size and complexity. However, the current standards for deducting the Safety and Health Expense have shown limitations in applying the properties and environment of the construction project due to its Safety and Health Expense Rate's classification method. Therefore, the purpose of this study is to develop a prediction model for the Safety and Health Expense that enables the consideration of different environment and properties of construction projects. The study uses multiple regression analysis to analyze the Safety and Health Expense of Ordinary(A) of less than 0.5 billion WON. The research results have shown that the use of multiple regression analysis reduces the error rate to 4.38% which the current standard calculation method have shown 18.48%. Therefore, the use of the suggested model provides reliable Safety and Health Expense prediction values that considers the properties of the project. It is expected that the results of this study contributes to the effective safety management by providing the appropriate amount of Safety and Health Expense to the project. In this study, only projects of less than 5 billion WON have been considered in the analysis. Therefore, more data is required for future studies to suggest an overall Safety and Health Expense predict ion model that covers the whole construction industry.
Development of Standard Systems through Analysis of Business Process the Risk Factors for the Korean Construction Management Firms
Park, Kyungmo ; Kim, Changduk ;
Korean Journal of Construction Engineering and Management, volume 16, issue 6, 2015, Pages 73~83
DOI : 10.6106/KJCEM.2015.16.6.073
Construction management firms in Korea have mainly focused on the key management areas of time, cost, quality and safety management in line with a rapid change of construction industry recently. However, a risk management is considered comparatively less important found from our research on an investment by the firms for training, system establishment. This has been identified that the construction management firms have taken an approach of dealing with risks with their experience, insight rather than managing risks with a systemized principles or proper tools. Therefore, the current system for risk management was identified by analyzing risk factors and work process in this research and systemized process for risk management of the identified risk factors was suggested. This research is expected to be a basis on establishing standard gudiance for risk management and risk management tools.
Effects of the contingent liabilities caused by project financing on financial status of the Korean construction firms
Kang, Namhui ; Kim, Hyunjoong ; Choi, Jaehyun ;
Korean Journal of Construction Engineering and Management, volume 16, issue 6, 2015, Pages 84~91
DOI : 10.6106/KJCEM.2015.16.6.084
Project Financing (PF) is a financing method, executed based upon the projected profitability from a project itself instead of relying on the credit rating of project sponsors or any type of collateral. However, most financial institutions of Korea lacks the long term profitability assessment capability, and they prefer to acquire credit reinforcement from the construction companies in the form of the guarantor or debt argument commitments. As a result, PF contingent liabilities as an indirect debt, are burdened to the construction companies. Even though the PF contingent liabilities are not supposed to be part of the financial statements, they became a mandatory disclosure items since 2009. In this study, PF contingent liabilities were studied to indicate how they were correlated with construction firms' financial ratios. Construction firms were grouped by their credit rating and each group was compared in order to analyze PF contingent liabilities' impact on the financial condition of the company in terms of liquidity, liability, and stability.
Opening China's Construction Markets through International Agreements and Negotiations and Applications for Firms
Yang, Junsok ;
Korean Journal of Construction Engineering and Management, volume 16, issue 6, 2015, Pages 92~100
DOI : 10.6106/KJCEM.2015.16.6.092
This paper examines the extent of China's market liberalization in the construction market seen through the point of view of WTO agreements and Korea-China FTA. Since the environment set by these agreements form the institutional background that Korean firms must work with to successfully access the market, the Korean government must work to reduce Chinese barriers as much as possible through international negotiations on these agreements. The paper sets out three goals for negotiations and the appropriate agreements and fora the government can use to advance these goals.
Application Effect Analysis of The Modular Construction Method in The Extension Works
Kim, Hakcheol ; Shin, Dongwoo ; Cha, Heesung ; Kim, Kyungrai ;
Korean Journal of Construction Engineering and Management, volume 16, issue 6, 2015, Pages 101~111
DOI : 10.6106/KJCEM.2015.16.6.101
The modular construction method has been getting more attention followed by global eco-friendly trend as the domestic construction industry has focused more on remodeling and extension work. The modular construction method is an industrialized construction system which is not likely as the existing construction method it manufactures more than 70% modules at the factory then assembling can be completed in a short amount of time on site. The modular construction method has various strengths; shortening of construction period by on-site work decrease, weight pressure reduction by usage of light steel frames and cost saving by repetitive manufacturing. However, it is currently not expanded due to the existing commercialized construction method. Therefore, this research is in order to help the related authorities make decisions to select the construction method and motivate expansion of modular construction method which can be utilized effectively in the extension works. The intention of this research is to stress differentiation from other construction methods in construction period, construction expenses, labor and forces by comparing and analyzing actual cases, to inform competitiveness of modular construction method by concrete effect analysis and to support adoption of the modular construction method into the domestic industry.
Investigation of Disputes for Nominated Sub-contractor(NSC) -Focused on the Judicial Precedent of NSC issues in Singapore, Malaysia and Hong Kong-
Cho, Jaeyong ; Kim, Junggon ; Park, Hyeonggeun ; Kim, Youngsuk ; Lee, Boknam ;
Korean Journal of Construction Engineering and Management, volume 16, issue 6, 2015, Pages 112~123
DOI : 10.6106/KJCEM.2015.16.6.112
Many disputes are happened with various causes in overseas construction projects. One of major disputes is closely related with nominated subcontractors (NSC). This paper investigates 30 judical precedents for Singapore, Malaysia and Hongkong to analyze the detailed disputes related with the NSC, and then the judical precedents are classified into 6 categories: Delay and Defect Trouble (T1), Contract Relation (T2), Payment Trouble (T3), Set-off (T4), Liquidation (T5) and so forth (T6). According to the analytical results, the frequency of occurrence of disputes is considerably related with social and economical changes, and the dispute between NSC and employer for residential and commercial building projects is the most frequently happened case. As the results of analysis, therefore, it is concluded that the employer needs to response aggressively to the problems related with NSC, and it is also important to make the council for communication among related bodies. Furthermore, the institutional reform that make the role and the responsibility of employer consistent under considering contract terms and conditions is considered as the most important and fundamental issue.
Improvement of Open BIM-based Building Permission Process Using EPI(Energy Performance Index)
Kim, Inhan ; Kim, Minchan ; Choi, Jungsik ;
Korean Journal of Construction Engineering and Management, volume 16, issue 6, 2015, Pages 124~135
DOI : 10.6106/KJCEM.2015.16.6.124
As many countries have been raising awareness of environmental issues, greater efforts for eco-friendly construction have been made in both governmental and private sectors. However, assessment circumstances for building energy performance and green building standard of legislation are still based on two dimension and handwork. This takes time, cost and labor, and makes assessment inaccurate and inefficient. Therefore, this study suggests methods to improve eco-friendly construction permission process and to automatize open BIM-based assessment of Energy Performance Index (EPI) among several eco-friendly construction certification standards. First, it analyzes the relations between assessment criteria and IFC data, and provides solutions to problems and limitations. Second, it applies the solutions to assessment program in order to automatize open BIM-based assessment for EPI. The eco-friendly construction permission process with these solutions applied will reduce time, cost, and labor by simplifying and automatizing the tasks. Also, the simplified process of design revision will improve not only productivity and efficiency but also accuracy and reliability.
Development of block-type sidewalk pavement system using snow-melting system
Park, Kyungmo ; Lee, Jeonguk ; Kim, Changduk ;
Korean Journal of Construction Engineering and Management, volume 16, issue 6, 2015, Pages 136~143
DOI : 10.6106/KJCEM.2015.16.6.136
Snow-melting system has been applied not only to roads for car traffic but also to pavement for the pedestrians safety reason in some of the developed countries such as USA and Canada based on countermeasures against Natural Disasters Act revised in 2000. Even though this system was introduced in korea in 2006 and has been partly applied to car traffic roads, there is few places that the system has been applied. Therefore, in this research a snow-melting system with a block-type to cover a pavement that efficiently transfers heat form heat rays to the top of a pavement and protects the heat rays. A quality check showed that compression and bending strength was improved approximately 5 times stronger and 7 to 10 times more absorption rate than the KS(Korea Industrial Standard) requirement. Moreover, only 10 minute was required to increase temperature above zero with a block-type snow-melting system whereas approximately 180 minute was spent with the existing system. This research is expected to contribute to environmental issues and reduce accidents on a slippery road.
Diversified Investment of Commercial Real Estate Assets - Focused on Office Building and Retail Real Estate Markets in Seoul -
Park, Jongkwon ; Jun, Jaebum ;
Korean Journal of Construction Engineering and Management, volume 16, issue 6, 2015, Pages 144~155
DOI : 10.6106/KJCEM.2015.16.6.144
This paper is to understand investment's efficiency and performance of commercial real estate assets diversified by use and district. To do so, this paper divides two different commercial real estate markets(office build market and retail real estate market) in Seoul city by district into "GBD(Gangnam Business District), YBD(Yeouido Business District), and CBD(Central Business District)" and "GBD(Gangnam Business District), SBD(Shinchon Business District), and CBD(Central Business District)" respectively, configures these districts each other to structure portfolios as its portion varies based on Markowitz's Mean-Variance principle, and looks at risk-return relationship of portfolios to find out efficiency, performance, and optimal investment chosen based upon Sharpe's Performance Index. As a result, the portfolio configured by "10 to 30% of office building asset at CBD" and "70 to 90% of retail real estate asset at CBD" is shown to be the most optimal, suggesting the highest quarterly Sharpe's performance index of 2.7118~2.7776 with quarterly rate of return of 1.826%~1.838% and quarterly standard deviation of 0.573~0.589. Furthermore, it is obvious that diversified portfolio configured by use(office-retail) shows better investment performance than that by district with same type of asset(office-office or retail-retail). Finally, results driven from this research will play an important role to stimulate real estate and construction markets through enlarging ideas as to diversified investment by use and district on real estate indirect investment products.