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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
A fundamental study for applying of Unit modular housing production system in the domestic
Lee, Du-Heon ; Kim, Kyoon-Tai ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 3~11
DOI : 10.6106/KJCEM.2013.14.5.003
The government has made a lot of efforts to realize 'low-carbon green growth', one of the national policy agendas, throughout the whole industries. The construction sector is not an exception, and technological developments are active to reduce energy consumption and greenhouse gas emission. In particular, buildings occupy more than 20% of the total national energy consumptions. Thus, it can be said that increasing energy efficiency of the residential buildings and reducing CO2 emission are the urgent national agenda. Moreover, as ordinary people find it more and more difficult to get a lease on housing, which has become an important social issue recently, a housing production system that can actively respond to market demands is in urgent need. To build an eco-friendly system that can maximize efficiency in construction, this study attempts to examine and analyze the modular housing production system in the county and to find its problems. By suggesting the ways to improve the system, it aims to prepare for the base to revitalize the unit modular housing production system.
Analysis on Liquidity Support Policy of Unsold New Houses through Utilization of CR-REITs - Using System Dynamics -
Na, Ho-Jun ; Park, Moonseo ; Lee, Hyun-Soo ; Hwang, Sungjoo ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 12~25
DOI : 10.6106/KJCEM.2013.14.5.012
Unsold new houses have increased before the financial crisis, and have steadily accumulated since domestic diffusion ratio of house exceeded 100%. From a long term point of view, it is important to liquidate unsold new houses and raise funds from the capital market till the housing market recovers because the accumulation of unsold new houses is a financial burden to the construction company and for that reason, the housing policies to support the liquidity of unsold new houses must be consistently available means. Therefore, the purpose of this study is to analyze the effectiveness of government's policy to support the liquidity of unsold new houses using CR-REITs from among these policies with system dynamics. Using the system dynamics model, this study finds the significance and limitation of the policy to liquidate unsold new houses using CR-REITs and suggests the measures to improve the policy.
An Analysis of Core Competency of Construction Field Engineer for Cost Management
Choi, Jae-Hong ; Kim, Yea-Sang ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 26~34
DOI : 10.6106/KJCEM.2013.14.5.026
Recently, many companies recognize the individual human resource as a core asset of the corporate value creation and devote a lot of effort to develop and manage competency-based human resource in order to strengthen the corporate competitiveness. As the integrated construction company taking the major portion in Korean construction industry, its construction engineers perform the construction supervision task with various related parties at each stage of the life cycle of the construction project. Therefore, the competency of a construction engineer is an important factor which have a direct impact on the success of the construction project. However, the current capability evaluation scheme of the domestic construction engineers is mainly oriented on the qualification factors such as the certificates or the seniority and this is quite different from evaluating the actual ability for construction management tasks. In this point of view, this study proposes the appropriate level of proficiency in cost management by analyzing the work process and its detailed items of the cost management that is the one of the basic management items of the construction industry. Based on this, this study analyzes the current competency level of the construction engineer by comparing with the required competency of each job position and also performs the engineer's work competency analysis of each work step.
3D Digital Design Optimization Process Considering Constructability of Freeform Structure
Ryu, Han-Guk ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 35~43
DOI : 10.6106/KJCEM.2013.14.5.035
Nowadays the widely used media in architecture include visualizations, animations and three-dimensional models. 3D digital methods using active CAM(Computer Aided Manufacturing) and CNC(Computerized Numerical Control) imaging have been developed for accurate shape and 3D measurements in freeform buildings. In contrast to a conventional building using auto CAD system and others, the proposed digital optimization method is based on a combination of 3D numerical data and parametric 3D model for design and construction. The objective of this paper is therefore to present digital optimization process for constructability of freeform building. The method can be useful in the effective implementation of an error-proofing process of freeform building during design and construction phase. 3D digital coordinate data can be used effectively to identify correct size of structural and finish members and installation location of each members in construction field. In addition, architects, engineers and contractors can evaluate design, materials, constructability and identify error-proofing opportunities. Other project participants can also include representatives from all levels of management, departments as well as workers and key subcontractors' personnel, if necessary. The 3D digital optimization process is therefore appropriate to serious variations in freeform shape. For future study, the developed digital optimization method is necessary to be carried out to verify the robustness and accuracy for constructability in construction field.
Improvement Scheme on Green Construction Cost & Benefit through Analyzing Trends and Case Studies
Kim, Won-Tae ; Choi, Seok-In ; Chang, Chul-Ki ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 44~54
DOI : 10.6106/KJCEM.2013.14.5.044
As a green construction is a world-wide hot issue, Korean government is also putting forth a multilateral effort into reducing energy usage with setting aggressive goal under green growth policy. It is essential to analyse cost raised from designing and building green construction and benefit derived from the built facility for the sustainable green construction. However, compared to advanced countries in terms of green construction, there is lack of data and a systematic way for data collection and analysis in Korea. Without analyzing the cost-benefit of green construction, investors will hesitate to put his/her money into green construction and we can not expect its growth in construction industry. In this paper, cost of green construction was defined and categorized. Through case studies and various reports on cost-benefit analysis in advanced green construction countries, problems in terms of data collection and analysis in domestic green construction sector and improvement ways were suggested. The results of this study will contribute in classification of cost and benefit of green construction, data collection in systematic way, and increasing the feasibility of green construction via appropriate analysis on cost-benefit of green construction.
A Priority and Impact Factor Analysis of Construction Management Tasks for Decreasing Change Orders and Defect Repairs in Cancer Treatment Center Projects
Lee, Chijoo ; Lee, Ghang ; Sim, Jaekyang ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 55~64
DOI : 10.6106/KJCEM.2013.14.5.055
The complexity of constructing medical institutions is higher than that of general buildings, and many change orders in the design and defect repairs in the construction phase are required due to strict government regulations. The priority control of constructions and impact factors of medical institutions were analyzed in this study, and difficulties in the control in the design and construction phase were identified. First, the priority management factors that were identified were as follows: architecture, facilities, and electricity. Second, 1) priority management in constructions and factors resulting in change orders and 2) priority management in constructions involving defect repair were analyzed. Third, the importance recognized by the construction managers were analyzed. The priority management in constructions and factors that were recognized by the construction manager were deducted as having low importance, although there were many change orders and defects. The work of finishing, wall building, joining, office automation and communication function, and lighting were analyzed in the design phase, and waste, the office automation and communication function, ceilings, contamination control, and plumbing were analyzed in the construction phase. The results showed that there will be a decrease in change orders and defects if the concentration of the manager was elevated and priorities were managed.
A Study on the Selection Method of Construction Management based on Public Construction Projects
Kim, Kwan-Su ; Park, Hyung-Keun ; Son, Bo-Sik ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 65~73
DOI : 10.6106/KJCEM.2013.14.5.065
Even though the construction management (CM) system was introduced for the purpose of increasing the efficiency of the domestic construction industry along with the establishment of construction industry fundamental laws in December of 1996, now it is very difficult that the public institutions can judge their application of construction management methods due to the lack of clear guidelines or directions to select construction management methods when the public institutions were executing public construction projects. Therefore, this study was executed to prepare for the selection criteria which could be referred in reviewing the application of construction management ordering methods according to public institution's competences and project characteristics. It is expected that future domestic demand of construction management will be gradually increasing both in public and private construction sectors. However under the current construction management systems, it is judged to be difficult that the construction projects that apply the construction management methods will be activated with full-scale. Therefore, it could be said that active efforts in domestic sectors are required in order that the construction management systems of developed countries levels could be activated. Additionally in order to vitalize the construction management systems, it is expected that public institutions could use this study results as the review data for feasibility of construction projects for the consignment of construction management in selecting the ordering methods.
Usability Improvement of BIM for Construction Projects Using Active BIM Functions
Kang, Leen-Seok ; Moon, Hyun-Seok ; Kim, Hyeon-Seung ; Kwak, Joong-Min ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 74~83
DOI : 10.6106/KJCEM.2013.14.5.074
Most current BIM systems are focused on the visual information of work status in the design and construction stages. In a passive BIM system, 3D CAD tool can visualize the interference elements of design drawings, however, it cannot suggest a solution to solve the interference status. And 4D CAD tool in the construction stage can simulate the appearance of each activity by construction schedule, however, it cannot suggest an optimized schedule plan considering specified schedule condition of the project. Recently, many organizations need BIM solutions that can improve the work status beyond the level of simple visual information from BIM system. Active BIM system can provide the solutions to the project manager. This study suggests active BIM functions for the solutions and attempts to develop a 4D CAD engine to validate the usability of the functions.
Analysis of the major subcontract competence factors of overseas plant construction
Kim, Hwa-Rang ; Sohn, Tae-Hong ; Jang, Hyoun-Seung ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 84~91
DOI : 10.6106/KJCEM.2013.14.5.084
In 2012, Korean overseas construction market has achieved 64.9 billion dollars of contract order and its amount has increased since the mid 2000's. However, importance of qualitative growth based on profitability as well as quantitative growth is also emphasized. This study analyzed overseas plant project's subcontract process management which is closely related to cost management as one of the qualitative growth methods. In order to select major subcontract processes, extensive literature review and focus group interview(FGI) were implemented and then professionals with years of experience in the overseas plant projects were participated in the questionnaire survey. The collected data were analyzed by Benefit-Structure Analysis(BSA) model. The findings of this study include: (1) the seven and six subcontract processes are positioned in the area of importance control factor and in the area of maintenance/control factor, respectively; (2) administration capability attainment is needed for the six subcontract processes in the area of importance control factor and sustainable management system is required for the processes in the maintenance/control factor area. The further research will identify key subcontract processes to be managed for overseas plant projects by Korean EPC contractors based on the findings of this research.
An Exploratory Research on Quantitative Risk Assessment Methodology Throughout Success Factor Analysis in Project Financing
Lee, Dong-Gun ; Cha, Hee-Sung ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 92~102
DOI : 10.6106/KJCEM.2013.14.5.092
A Project Financing (PF) is a form of project delivery system that is carried out for the purpose of trying to give help to the development of national economy and the construction industry in order attract private investment. However, in the case of Korea, many PF projects are only taking into account the aspect of maximizing development benefits, and the proliferation of PF results in project failure. In addition, the interruption of business has been one after another in the aftermath of the recent financial crisis. These major cause is the result of efforts to block the potential risk of objectively quantifying operations. Nowadays, PF risk analysis in terms of various factors is insufficient. The purpose of this study is to identify and quantify the extensive risk elements to classify the cause of affecting the success of the project PF study prior to propose a methodology for evaluating the integrity of the project PF based on this and to provide a quantitative system that can evaluate the business risk. This study identified the factors that affect the PF business success and failure and establish the metrics that can be quantified through existing research and expert interviews. Factors influencing the success of the PF obtained as a result of surveys and interviews in assessing the soundness of the PF development conditions in the future be able to take advantage of, as well as an objective assessment tool to be able to take advantage of the development is expected.
A Development of Construction Industry Production Index(CIPI) with Temperature Effects
Kim, Seok-Jong ; Kim, Hyun-Woo ; Chin, Kyung-Ho ; Jang, Han-Ik ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 103~112
DOI : 10.6106/KJCEM.2013.14.5.103
After 1990s, the influence of construction industry has been decreased on national economy and construction business condition has been changed on economic recession and boom repeatedly. Larger fluctuation of business condition makes a forecast of it to be more difficult. Uncertainty in business prediction results in damages on construction companies and stakeholders. Therefore, study on forecasting a construction business is very important. This study suggests the Construction Industry Production Index(CIPI) to predict a construction business in consider of temperature effects. The results show that construction business is much influenced by temperature effects certainly and GDP. With the CBFM, this study examines CIPI for 2013 with two scenarios: 1)with GDP growth rate of 3.5% 2)with GDP growth rate of 2.4%. Thus, CIPI would be used as the economic state index to display the construction business conditions. Also, CIPI will be utilized as basic methodology in the impact of climate change in the construction industry.
A Study on the Investigation into Obstacles in Overseas CM Projects
Kim, Jae-Hee ; Kim, Han Soo ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 113~121
DOI : 10.6106/KJCEM.2013.14.5.113
An expansion into the global market increasingly becomes a buzz world among Construction Management(CM) firms in Korea. The objective of this study is to identify potential obstacles and investigate their nature and implications to CM firms in Korea. The study identified 25 obstacles under 5 categories. Base on a questionnaire survey and interviews with CM experts who have global CM projects experience, the study discusses that while there exist various types of obstacles, a more attention needs to be paid for a small number of major obstacles to minimine risks in overseas CM projects. It also suggests that improving pre-construction management competency through securing CM experts should be listed as a top agenda for Korean CM firms.
A Study on Elements of CM Firms' Competitive Strategy
Baek, Seung-Ryong ; Kim, Han Soo ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 122~130
DOI : 10.6106/KJCEM.2013.14.5.122
As the level of competition has increased in the construction management market, it becomes a critical issue for CM firms to secure competitive edges. The objective of the study is to investigate elements of competitive strategy as perceived by CM firms and to discuss key features and implications. Michael Porter's Competitive Strategy Model was used as a framework to analyse the elements under three strategy categories. A major finding includes that Differentiation Strategy is generally perceived most important strategy category but, depending on the group to which a CM firm belongs, there exist a gap in the perception. However, regardless of the group, Cost Leadership is commonly considered least important strategy category. In particular, lowest-bidding strategy element showed the least importance. Understanding CM firms' perceptions on elements of competitive strategy provides an insight into CM firms' current strategy directions and can be useful for future tuning in a firms' own strategy.
Development of Rule for Quality Checking Items to Raise Quality of BIM Model -Focusing on the Domestic BIM Guidelines-
Song, Jong-Kwan ; Ju, Ki-Beom ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 131~143
DOI : 10.6106/KJCEM.2013.14.5.131
There is the difference of criteria to apply guidelines among the project participants and to depend on the purpose of utilizing BIM models, although modeling criteria are basically provided through BIM guidelines. Therefore, it is quite important to check compliance with guidelines to raise quality of the BIM model. But Quality Checking (QC) items and method for BIM model modeled in accordance with guidelines is not provided. This study suggested QC items and Rule Specifications(RS) for automatic QC. First of all, QC items were derived by analyzing domestic BIM guidelines and a process for structuring natural language is conducted by utilizing flowchart and pseudocode. So, by combining them, RS was suggested. Finally, RS-based case study was conducted by implementing automatic QC process with solibri model checker
. This study will contribute to the improvement of design quality and completeness of BIM model including huge data of 3 dimension. Furthermore, it is necessary to develop BIM guidelines according to the use case and to provide detailed process and standard for QC of BIM model.
Improvement of Cost-Schedule integration based Progress Management through PMIS
Yoon, You-Sang ; Suh, Sang-Wook ; Jang, Gyu-Seong ; Choi, Jang-Shik ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 144~152
DOI : 10.6106/KJCEM.2013.14.5.144
Recently construction projects become more bigger. So construction companies have being performed cost and schedule management task by using PMIS. In engineering and construction phase, progress management which occur the most frequent information I/O(input and output) should be managed effectively by PMIS. Although most information by PMIS manage efficiently, cost-schedule information for progress management is difficult to be managed due to recurrent information input. thus when changed by price fluctuation and change order, progress management could not connnect cost information with schedule information. So it caused inaccuracy of progress measurement and data increase in PMIS. To solve this problem, This study suggests improved module for progress management through integration of cost-schedule using quantity take-offs as progress measurement method.
Development of Optimum Construction Lift Operation System using Sensing Information for High-rise Building
Shin, Joong-Hwan ; Kwon, Soon-Wook ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 153~163
DOI : 10.6106/KJCEM.2013.14.5.153
As recent buildings have been more higher and larger, construction vertical lifting planning and operation is a key factor for successful project in tall building. Although many studies have been trying to set up a construction lifting planning system at early stage, there's not existing a control real-time lift operation control system with respect to during construction stage. Therefore, In this study, we use the sensor device to collect the lift operating data for improvement of lift operation efficiency and develope optimum lift operating system which can perform real-time analysis. Finally, we verify the efficiency of proposed system through comparison between realtime operating data and simulated data using proposing system. In this paper, the proposed system show more efficient moving line compared with previous system. This can contribute to development of unmanned lift system.
A Study on the Strategy for Creating Demand of Modular Construction through Case Analysis by Building Type
Kim, Dong-Soo ; Kim, Kyung-Rai ; Cha, Hee-Sung ; Shin, Dong-Woo ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 164~174
DOI : 10.6106/KJCEM.2013.14.5.164
It has been seriously difficult to create demand of modular construction because Korean modular method has been considered as container house or lightweight steel house. Actually, barrier factor of modular construction for activation was difficult to produce modular continuously in factories based on stable amount of demands. So, this research found successive factors of modular construction and proposed the method of demand creation through a plethora of case analysis by building types. In addition, this research found the scale of modular potential market. Owners will be able to use this strategy that is proposed in this research when they make a decision about construction system. Also, the modular construction can make potential market in Korea. As a result, modular system producer can make their business strategies and make continuous demand by conjugating the method of creating demand for modular construction which is proposed in this research.
4D BIM based Workspace Planning Process in Building Construction Project
Choi, Byungjoo ; Lee, Hyun-Soo ; Park, Moonseo ; Kim, Hyunsoo ; Hwang, Sungjoo ;
Korean Journal of Construction Engineering and Management, volume 14, issue 5, 2013, Pages 175~187
DOI : 10.6106/KJCEM.2013.14.5.175
Each participant in building construction project requires their own workspace to execute their activities. In this environment, inappropriate workspace planning in construction site causes workspace conflicts which result in a loss of productivity, safety hazard and poor-quality issues. Therefore, workspace should be regarded as one of the most important resources and constraints have to be managed at construction site. However, current construction planning techniques such as Gantt chart, network diagram and critical path method have proven to be insufficient to workspace planning. This paper contains formalized process for workspace planning in 4D BIM environment to prevent workspace related problems in construction project. The proposed process in this paper represents workspace occupation status for each activity and suitable solutions for identified workspace conflicts by integrating workspace attributes and activity execution plan. Based on the result of this study, project manager will be able to prevent probable workspace conflicts and negative effect on project performance by devising appropriate workspace plan during preconstruction phase.