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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
TACT Scheduling & Monitoring of Apartment Finish Works based on the BDM Technique
Kim, Seon-Gyoo ; Yoo, Jae-Woo ; Kim, Dong-Sub ; Park, Jong-Il ;
Korean Journal of Construction Engineering and Management, volume 15, issue 2, 2014, Pages 3~11
DOI : 10.6106/KJCEM.2014.15.2.003
As the recent construction projects have been carried out as a mixed-use complex project that includes architecture, civil, mechanical, electrical, and landscape, as well as become bigger and high-rise with the increased repetitive works, the TACT technique has received more attention as an effective method for achieving a target completion date by securing the continuous works. Although the TACT technique can maintain a steady flow without the interruption of works in order to utilize the resources of the repetitive works, it can not be considered as the systematic scheduling technique because the schedule computations are not possible as well as a critical path can not be recognized. This paper proposes the applicabilities of scheduling and monitoring the TACT schedule by the BDM technique as comparing and analyzing the methodologies for apartment finish works by the Excel, the Primavera(P6) based on the PDM technique, and the Beeliner based on the BDM technique that is a new networking technique, respectively.
The Development of Noise Management Model using Active Noise Control Technique on Construction Site
Kwon, Nahyun ; Park, Moonseo ; Lee, Hyun-Soo ; Ahn, Joseph ; Kim, Sunwoo ;
Korean Journal of Construction Engineering and Management, volume 15, issue 2, 2014, Pages 12~22
DOI : 10.6106/KJCEM.2014.15.2.012
Recently, many people have been damaged seriously by construction noise. Accordingly, there have been increased the complaints and disputes. These complaints should be controlled strictly. Otherwise there could be delays or stops of project and losses of time and money. For this reasons, the Korean government is trying to convert from depending on the soundproof wall to noise control system focusing on noise sources. However, it is difficult to control the noise which is generated from construction site because construction equipment has very high noise level and construction noise generates temporarily and irregularly. Also, people do not know how much low frequency affect human body adversely because they cannot perceive low frequency noise easily. Hence, recently developed countries have conducted the research on the low frequency noise which damages on human physically and mentally. However, passive noise control is insufficient to reduce the low frequency noise, but only efficient to lower the high frequency noise. Thus, an approach which can complement limitations of passive noise control is needed. Therefore, the purpose of this research is to suggest the noise management model using active noise control on construction site. Also, ANC simulation has been conducted to examine its applicability on construction equipment. As a result, it is expected that there will be a reduction of construction noise and demages, as well as both mental and physical damages.
New Building Materials and Methods for Modernized Korean Housing (Hanok)
Kim, Min ; Kim, Hyosun ; Ryu, Jaeseon ; Jung, Youngsoo ;
Korean Journal of Construction Engineering and Management, volume 15, issue 2, 2014, Pages 23~32
DOI : 10.6106/KJCEM.2014.15.2.023
Modernized Korean housing (Hanok) with competitive price has been actively developed due to the increased interests in traditional Korean housing. Developing new building materials and methods is an essential area for Modernized Hanok. This paper compared and analyzed two mock-up buildings of Modernized Hanok and one mock-up of Traditional Hanok those were actually constructed as test-beds. Many different new methods were introduced, and their influences on construction cost and schedule were analyzed in order to verify the research results as well as to find implications for future direction. As a result, the construction cost and schedule of Modernized Hanok have been decreased by about 40% and 20%, respectively, when compared with traditional one. 'Wood frame' and 'Roof' are found as being the most influencing areas with highest weights in terms of cost and schedule. Therefore, further development in these two areas would facilitate to reduce overall cost of Modernized Hanok with improved building performance.
A Study on Practical Ways to Improve Pricing Criteria for Technical Service Contracts
Lee, Taewon ; Lee, Ghang ;
Korean Journal of Construction Engineering and Management, volume 15, issue 2, 2014, Pages 33~43
DOI : 10.6106/KJCEM.2014.15.2.033
Goods, services and construction works needed by central government entities, local government entities, and other public institutions are procured with national budget. For efficient budget execution, Article 9 Paragraph 1 of the Enforcement Decree of the Act on Contracts to Which the State is a Party (hereinafter "State Contract Act") provides for the criteria for determining estimated price. Sub-paragraph 2 of the paragraph provides for the "determination of estimated price by cost calculation". On this legal basis, pricing criteria for the determination of estimated price, based on the project purpose, are announced by responsible authorities. This study analyzes the pricing criteria for technology services and proposes a price calculation methodology that can ensure transparency, as a practical improvement for more rational and efficient budget execution in the public sector.
A Model for Predicting Management Costs of the Multiple Prime Contract
Kim, Kihyun ; Kim, Kyungrai ; Park, Wansoo ; Lee, Eunjae ; Hwang, Youngkyu ;
Korean Journal of Construction Engineering and Management, volume 15, issue 2, 2014, Pages 44~52
DOI : 10.6106/KJCEM.2014.15.2.044
On March, 2013, the Government announced the Multiple Prime Contract method will be expanded in public building construction projects. The applying multiple prime contract method has been immersing issue among all stakeholders of construction project. The owner conducts the role of a general contactor as well as owner's original responsibility while construction works being executed by specialty contractors. If the owner has not experience of project management, it should be bring about increasing management cost due to the interface problems among prime contractors. With this reason, it is difficult to administrate the multiple prime contract. So far there has been no methodology of predicting management cost in the multiple prime contract. Therefore, this study aims to enable the operation of efficient multiple prime contracts by developing a model to predict their management costs.
Framework of Conceptual Estimation Model for BIM based Internal Finishes of High-rise Building Project
Chung, Suwan ; Kwon, Soonwook ;
Korean Journal of Construction Engineering and Management, volume 15, issue 2, 2014, Pages 53~61
DOI : 10.6106/KJCEM.2014.15.2.053
Previous studies reveal the need for a tool to cost estimation of building design in early design stages. This paper proposes an internal finishes cost model tool to address this need. The tool allows users to evaluate the functionality, economics and quality of finishes concurrently with high-rise building design. Lack of information in the early stages of the project enables a relatively accurate estimates of work to raise up. Measurements are automatically extracted from simple design information and profile driven estimates are revised in real-time. The data model uses a flexible unit rate system that can easily be extended to other estimate dimensions such as mix-use building surcharge rate estimation. The approach illustrated in this paper is applicable to BIM tool conceptual estimation that support for massing purposes other than the one chosen for this study.
A Study on the Analysis of Current Situation of Safety Inspections cost in Apartment houses
Go, Seong-Seok ; Song, Do-Heom ; Yun, Yeong-Chae ;
Korean Journal of Construction Engineering and Management, volume 15, issue 2, 2014, Pages 62~70
DOI : 10.6106/KJCEM.2014.15.2.062
An apartment house, a private facility, is a house built for many persons to live independently in a building. An apartment house is a building where life damage can happen most in case of a safety accident due to insufficient inspections. However, formal inspections are being realized due to awareness shortage of managing bodies about safety inspection and low-price order-receiving of diagnosing enterprises via the lowest bidding method. This is because it is judged that remarkable costs are inputted in repairs and reinforcement such as maintenance of a structure and that there is a large possibility of human damage in case of a safety accident in a structure. So, this paper aims to derive the points to improve in the current criterion to execute an efficient detailed inspection. As its method, the design price and execution price situation of 66 buildings inspected in detail for recent 3 years for the class 2 facilities in Gwangju Metropolitan City and Jeonranam-do are examined and analyzed. The state2 object buildings to inspect are selected through this. And this paper aims to present the points to improve through the analysis of current problems by evaluating the detailed inspection report and the detailed inspection execution price calculation criterion for the selected 10 apartment houses.
Development of Web-Based VE Supporting System for Effective Workshop
Lim, Jongkwon ; Kim, Sunghun ; Lee, Min-Jae ;
Korean Journal of Construction Engineering and Management, volume 15, issue 2, 2014, Pages 71~78
DOI : 10.6106/KJCEM.2014.15.2.071
Value Engineering methodology was introduced about 30years ago and has significant achievement in Korea. However, many of workshop still focus on cost down process and do not spend enough time on function analysis and expert cooperation. As a result, limited range of creative ideas were produced. To improve effectiveness of VE workshop, this study developed web-based value engineering process and system. And this study applied it to real case study to evaluate effectiveness of proposed system. Developed VE system also provides automated FAST diagram function and decision-making supporting tools. The authors found that this developed web-based VE system can significantly help to save cost and improve performance of VE workshop by using the appropriate VE process, and quick cooperation between experts. In addition, this study shows an example of a VE case study that applies the web-based VE system process, which led to a very innovative and effective way to lead workshop.
Development of Change Management System for Urban Development Project
Cho, Jinyoung ; Jang, Ounsung ; Yu, Junhyuk ; Lee, Min-Jae ;
Korean Journal of Construction Engineering and Management, volume 15, issue 2, 2014, Pages 79~86
DOI : 10.6106/KJCEM.2014.15.2.079
Construction project become larger and more complicated. Korea go through government complex relocation Mega-size program including many sub-projects which were complicated, long-term, and need extensive funding. Effective change management is very important for this kind of mega-project since it has many stakeholders and can't avoid continual change of schedule, budget, etc. Especially, change management process and system is very important for program success. When each project have changes, program is impacted by these changes. So, Change management is very important for effective program budget and time management. This study try to develop change management process and framework considering continuous changes in project level for effective program management. In addition, this study developed change management system and applied it to new mega-size program and analyze the effectiveness.
Analysis of Dynamic Relationship between Changes in Domestic and Overseas Orders and Insolvency of Construction Companies
Jang, Sewoong ;
Korean Journal of Construction Engineering and Management, volume 15, issue 2, 2014, Pages 87~94
DOI : 10.6106/KJCEM.2014.15.2.087
This study aims to analyze the relationship. The study applies EDF (Expected Default Frequency) as a variable that indicates management status of a construction company. To analyze changes in business structure of construction companies, the study refers to the amounts of domestic and overseas project orders as variables. The data was retrieved from TS2000 established by Korea Listed Companies Association (KLCA), Statistics Korea and International Contractors Association of Korea. The analysis period is between first quarter of 2001 and fourth quarter of 2010. The analysis results showed that as more domestic and overseas orders rolled in for domestic companies, their business conditions improved as the hypothesis suggested. However, the level of improvement varied. Further, when construction companies' business slowed down, the proportion of overseas projects tended to rise, while the ratio of domestic business decreased.
An Analysis of Profitability Study of Overseas Construction Projects using Multiple-Regression
Kim, Jineon ; Kim, Yeasang ;
Korean Journal of Construction Engineering and Management, volume 15, issue 2, 2014, Pages 95~103
DOI : 10.6106/KJCEM.2014.15.2.095
Korean construction industry has been rapidly grown due to Meddle-East construction market growth. To earn foreign currency and to raise overall Korean industry government has encouraged construction frontiers. As construction industry could grow up for its labour based originity but the time passes by and overseas construction market requests engineering know-how and technology for productivity to earn more profit. Over last 20 years overseas construction market share has been dramatically raised but its profit share is gradually declining. This study analyzed data sets of over 180 overseas construction projects for last 30 years of domestic contractor by using multiple-regression analysis and derived an output how input variables of characters explaining the construction project effects its profit.
An Empirical Analysis of the Effect of the Introduction of Korean equivalents of International Financial Reporting Standards (K-IFRSs)
Jang, Sewoong ;
Korean Journal of Construction Engineering and Management, volume 15, issue 2, 2014, Pages 104~111
DOI : 10.6106/KJCEM.2014.15.2.104
Due to the structure of advanced installment sales of houses which is a construction industrial structure unique to Korea and the Project Financing (PF) project structure that includes construction companies' debt guarantee agreements, the changes in accounting methods resulting from the introduction of K-IFRSs are expected to act in a direction to deteriorate construction businesses' financial statements. Therefore, K-IFRSs are an important issue that can seriously affect the entire domestic construction industry and construction businesses are conceiving strategies to respond to the introduction of K-IFRSs. From this viewpoint, this study was intended to empirically analyze the effect of the introduction of K-IFRSs on construction businesses utilizing financial data applied with the K-IFRSs recently announced. In the analysis, the EDFs were calculated by business using the existing accounting standards GAAP and using K-IFRSs and the results were compared with each other. The results of the analysis indicated that most construction businesses were adversely affected by the introduction of K-IFRSs. It is also considered that businesses with relatively good financial statements under the existing accounting standards GAAP would be affected more by the introduction of K-IFRSs than other businesses. In addition, the introduction of K-IFRSs is expected to have larger effects on large construction businesses that have been providing debt guarantees for PF projects than on small or medium sized construction businesses.
An Analysis on the Investment Determinants for Insolvent Housing Development Projects
An, Kukjin ; Cho, Yongkyung ; Lee, Sangyoub ;
Korean Journal of Construction Engineering and Management, volume 15, issue 2, 2014, Pages 112~121
DOI : 10.6106/KJCEM.2014.15.2.112
After IMF bailout crisis in Korea, project financing has been employed as a major funding vehicle for the housing development. In 2008, the recession of housing market due to the global financial crisis had an significant impact on the increasing insolvent site of PF based housing development project, resulting in serious impact to whole economy as a chain effect. In order to resolve this vicious circle of bankruptcy, the major construction companies were urged to take over the insolvent sites and invest to them for normal project exit, and finally play a critical role in normalization of market. Therefore, this study aims to define the core factors for decision making to invest to insolvent site and find out differences among constructors, developers, financial lenders. The results from AHP analysis, the profitability was the most important factor to constructors. Moreover, even though the location merit is little less, through competitive price, we can assure that stable profitability is most important factor to decide to invest in insolvent site. In conclusion, the price is cheap, is highly feasible, if the land secured, major construction company will participate in a PF business investment. These findings were verified by the investment case of major construction company.
Development of Mobile-Based Process and System for Pipe Management of Construction Using NFC(Near Field Communication) and Augmented Reality Technology
Moon, Daeyoon ; Kwon, Soonwook ;
Korean Journal of Construction Engineering and Management, volume 15, issue 2, 2014, Pages 122~131
DOI : 10.6106/KJCEM.2014.15.2.122
As plant market grows up, client demands to increase quality, technology and to reduce construction period. Due to the vast scale of the construction site and complexity of process, plant project can have some problems of communication among the project participants, the duplication of work, errors and rework. As a result those cause more costs, delay the construction schedule and reduce productivity and quality. Therefore, real-time communication between participants and real-time sharing of information such as material, equipment and construction are required in plant project site. This research aims to propose process and develop system using NFC(Near Field Communication) technology and augmented reality technology with mobile device for plant construction site. Administrators and operators are able to work efficiently using proposed process and system which create an environment designed to share and deliver information such as material, construction information.