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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 10, Issue 6 - Nov 2009
Volume 10, Issue 5 - Sep 2009
Volume 10, Issue 4 - Jun 2009
Volume 10, Issue 3 - May 2009
Volume 10, Issue 2 - Mar 2009
Volume 10, Issue 1 - Jan 2009
Selecting the target year
Development of Building Monitoring Techniques Using Augmented Reality
Jeong, Seong-Su ; Heo, Joon ; Woo, Sun-Kyu ;
Korean Journal of Construction Engineering and Management, volume 10, issue 6, 2009, Pages 3~12
In order to effectively distribute the resources, it is very critical to understand the status or progress of construction site quickly and accurately. Augmented Reality (AR) can provide this situation with information which is convenient and intuitive. Conventional implementation of AR in outdoor or construction site condition requires additional sensors or markers to track the position and direction of camera. This research is aimed to develop the technologies which can be utilized in gathering the information of constructing or constructed buildings and structures. The AR technique that does not require additional devices except for the camera was implemented to simplify the system and improve utility in inaccessible area. In order to do so, the position of camera's perspective center and direction of camera was estimated using exterior orientation techniques. And 3D drawing model of building was projected and overlapped using this information. The result shows that by using this technique, the virtual drawing image was registered on real image with few pixels of error. The technique and procedure introduced in this paper simplifies the hardware organization of AR system that makes it easier for the AR technology to be utilized with ease in construction site. Moreover, this technique will help the AR to be utilized even in inaccessible areas. In addition to this, it is expected that combining this technique and 4D CAD technology can provide the project manager with more intuitive and comprehensive information that simplifies the monitoring work of construction progress and planning.
A study of relevant model of information management system based on business process for embodying BPM on construction company
Lee, Jung-Woo ; Song, Young-Woong ; Choi, Yoon-Ki ;
Korean Journal of Construction Engineering and Management, volume 10, issue 6, 2009, Pages 13~27
Construction companies are trying to apply process management to their business to improve efficiency in business circumstance of high competition and globalization. Since 1990s, construction firms adopted process management to improve internal and external business structure based on process. It however has a few improvement functions. In addition, business support systems for business process efficiency improvement were developed, but separation between business process and IT system occurred because it focused on function-based individual construction and data input/output. To solve this problem, this study proposed business process and IT integration model for supporting user to use business information and system based on visualized business process and improving use of previous business support system. Business efficiency is expected to be improved with this model which based on integration required business condition(stakeholder, business data, functions of business supporting system). This study developved process model, architecture, and BPA of whole construction management business. According to BPA, it analyzed business process stakeholder, detail activities, and input-output data. And also it examined 12 main business supporting system of Korean construction firms. Based on analyzed data, this study developed business process supporting integration model based on business process through PDCA and CRUD analysis.
Correlationship with Selecting Business Process and Strategy for BPM of Construction Company
Cho, Hang-Min ; Song, Young-Woong ; Lim, Hyung-Chul ; Choi, Yoon-Ki ;
Korean Journal of Construction Engineering and Management, volume 10, issue 6, 2009, Pages 28~39
Recently, it has been an issue on BPM(Business Process Management, below BPM), which is a sort of business management methods that secures agility and flexibility through sustainable improving and monitoring in a rapid-changing environment. To introduce BPM to construction company we need to set up a procedure for objective, define criteria according to the business structure defined by BPA(Business Process Architecture, below BPA) and analyze works and then select targets. Those BPM target works need to have a close relationship with corporate strategy and to support realizing corporate value. Therefore, this paper will study BPM Target works of construction companies for an effective introduction BPM through questioning from working-level staff. In addition, it will analyze their types and corporate core strategy and BPM target works, then study the main strategy according to BPM target types. And also, this study is expected to help construction companies to choose the business for BPM adoption through analyzing current situation and strategy for business selection when adopting BPM.
Economic Analysis of Box Mechanical Behavior Materials Using LCC Analysis
Park, Young-Min ; Kim, Soo-Yong ;
Korean Journal of Construction Engineering and Management, volume 10, issue 6, 2009, Pages 40~47
The lightweight bubble mixture soil is used for soft ground rear-filling material by applying reduced weight on structure. However, comparing with the general soil, it is not applied in domestic because of initial phase cost of construction. General soil, which has lower initial phase cost is usually used for rear-filling, but the use of overlay method of general soil is reduced as the number of layers increases. Especially box structure placed in soft ground or the overlay method when gap near pier rear-filling can be replaced with temporary alternative method, however, it can't be a solution to gap by generation of extra weight of thickness of overlaying. Therefore, execute LCC analysis of two alternative-the general and the lightweight bubble mixture soils, which are rear-filling material of box structure- and present economical analysis in order to make resonable decision from the economics. As a result, although the lightweight bubble mixture soil takes higher initial phase cost than the general soil, it has been analyzed to procure economical efficiency by having less cost of maintenance.
Identifying and Analyzing Pre-Dispute Factors for Construction Projects
Park, Sung-Yong ; Yang, Jin-Kook ; Kim, Byeong-Ok ; Lee, Sang-Beom ;
Korean Journal of Construction Engineering and Management, volume 10, issue 6, 2009, Pages 48~57
As recent construction projects have gradually become larger in size and complex, construction documents such as drawings and specifications revealed the limitations that can not express all the necessary information. Due to the lack of stipulations on the contract, disputes arise among contracting parties. Traditionally, many construction companies in Korea make an unfair agreement with the clients so that the irrational items are included in their contract documents. Potential dispute factors are triggered as a result of misleading or omitted items on the written documents. This paper analyzed the civic counseling cases obtained from the public procurement service in Korea, and identified the potential dispute factors that can occur during pre-dispute stage alone with their influence analysis. The results found from this study can be used for the development of checklists that prevent the dispute in the process of construction projects.
Standardization of rebar manufacturing for rebar work
Cho, Young-Keun ; Jung, Sang-Hwa ;
Korean Journal of Construction Engineering and Management, volume 10, issue 6, 2009, Pages 58~66
Due to a shortage of professional labor and the stagnant construction industry in recent days, there has been an increasing demand for securing profitability through cost reduction. Though its importance in the cost and its great influence on the safety and durability of structures, the labor intensiveness of rebar work has caused a serious problem of rising cost accompanied by the loss of rebar materials. In the plant manufacturing process, rebar is cut and bent at the automated facilities and conveyed to the construction site, which makes it possible to manufacture higher-quality bars and to reduce the losses from rebar materials. Different from the expectation, however, this type of plant manufacturing still has not been active since its first introduction in 1990s. In this study, a research on the actual condition of rebar manufacturing plant has been implemented and a standardized rebar manufacturing has been provided as a way to activate rebar manufacturing.
Infrastructure Asset Management Policy and Strategy Development
Chin, Kyung-Ho ; Chae, Myung-Jin ; Lee, Giu ; Lee, Kyo-Sun ;
Korean Journal of Construction Engineering and Management, volume 10, issue 6, 2009, Pages 67~77
Infrastructure asset management can be defined as the long term and cost effective management strategy to meet the required service level. In most developed countries, the major motivations of the introduction of asset management are increment in number of assets, extension of maintenance field, accounting approaches of public facilities, performance-based FM(Facility Management), limitations of public funds and public-private partnership, life cycle cost approach, and the development of information technology. This paper discusses the strategic and stepwise methods of introducing infrastructure asset management. Strategic approaches are suggested to develop the practical methods of condition and value assessment of assets, and long-term capital investment plan for optimized decision making(ODM). Required systematic processes are analyzed in terms of resource and technical limitations and detailed implementation plan for each development phases are suggested.
Analysis of Conflict Cases in Urban Regeneration Projects
Lee, Seul-Ki ; Kwon, Hea-Rim ; Yu, Jung-Ho ;
Korean Journal of Construction Engineering and Management, volume 10, issue 6, 2009, Pages 78~87
Because of a wide range of performance and diversity of project and uncertainty caused by complexity and a number of stakeholder, conflict occur necessarily in Urban generation including large-scale and many project which do the same time, for long time. so active conflict management which recognized risk before the fact and deal with conflict is necessarily needed. Therefore, This study is typing conflict cases and indicating critical conflict type through analysis on conflict case about process and stakeholder of urban generation to offer information which is referred to finding a solution when conflict occur by forecasting conflict that can occur before the fact.
A Study on the Development of the Problem Improvement Directions in Enhancing BIM Data Interoperability through IFC
Kim, Ji-Won ; Ock, Jong-Ho ;
Korean Journal of Construction Engineering and Management, volume 10, issue 6, 2009, Pages 88~98
Construction industries have increasingly utilized Building information Modeling (BIM) technologies. Interoperability - the capability for BIM data to run from one computer application to another in the life cycle of a project has become one of the principal research areas. Enhancing interoperability inevitably requires information structures that are standardized throughout the construction industries. As a candidate of the data exchange standard, Industry Foundation Classes (IFC) has been developed and several researches recently performed to measure its richness of digital data exchange. But doubts have been brought up whether IFC meets a sufficient level of interoperability since the research result revealed a number of cases of information misrepresentation and loss. This research presents the lessons learned from the interoperability tests of three widely used 3D design applications including Graphisoft's Archicad, Autodesk's Revit, and Bentley's Bentley Architecture. One building's architectural and structural design data were modeled with the three tools and exchanged through IFC respectively for interoperability test.
The Improvement Plan on the Airport's Convenient Facilities for the Disabled
Park, Jun-Mo ; Kim, Ok-Kyue ; Kim, Sang-Kil ; Choi, Jeong-Hyun ;
Korean Journal of Construction Engineering and Management, volume 10, issue 6, 2009, Pages 99~106
In modern society the population of disabled goes on increasing rapidly not only in congenital deformities but also in acquired handicapped persons due to various factors such as car accidents and industrial disaster. And the number of disabled passengers in airports is growing every year with economic growth and globalization in Korea as well. That is the reason why the effort to the convenient facilities for the disabled in airports is needed more. The real situation in airports which are the public buildings is that the effort to install the facilities for the disabled is only perfunctory to meet the legal standard and cannot answer to the expectation of the facilities for the disabled. In this study I would like to give the airport operators the guide line to expand the facilities and the disabled an opportunity to use airports more freely and conveniently through the presentation on the problems and solutions with the current situation of the facilities for the disabled and the satisfaction of users in all airports in Korea.
A Study on the Problem and Improvement of Screening System of Low Price Subcontracting by Analyzing a Standard of Judgement Criteria
Kim, Soon-Young ; Han, Choong-Hee ; Baek, Tae-Ryong ; Kim, Kyoon-Tai ; Lee, Jun-Bok ;
Korean Journal of Construction Engineering and Management, volume 10, issue 6, 2009, Pages 107~116
As the Fundamentals of Construction Business Act was revised in December 2004 and its implementing ordinances and enforcement regulations were adjusted in June 2005, the screening system of low price subcontracting has been an obligation to the public owners, having brought about arguments for and against since it enacted in 1983. The statutes for low price subcontracting have been reinforced from this year; for example, it underlines to submit to a project and builds an information network of subcontracting works. The system's original intention was that prevents shoddy and fraudulent constructions caused by low price subcontracting and precludes disturbances of fair trade by screening that whether it satisfies the conditions or not in advance. But, the criterion for the existing low price subcontracting has several issues having held up a true mirror to the real situation. It is arguable to discharge an important task with the primary purpose. This dissertation have researched the problem with a deposit of subcontract and the low price subcontracting basic rate are being used by the criteria for deciding whether it is a low price subcontracting or not, so showing the plan of reformation based on the findings, it wishes to contribute toward making the most of the system's essential intent.
Construction Risk Assessment Methodology Using Site Risk Influence Factors
Lee, Hyun-Soo ; Kim, Hyun-Soo ; Park, Moon-Seo ; Lee, Kwang-Pyo ; Lee, Sa-Bum ;
Korean Journal of Construction Engineering and Management, volume 10, issue 6, 2009, Pages 117~126
Many work-related risk factors can cause construction site hazards. Considering variable and changeable characteristics of construction site, risk of same trade can be different by combination of inherent characteristics. But established safety management has performed like other industries not reflecting characteristics of construction. So, to suggest risk assessment methodology considering risk influence factors in construction site, this study extracts risk influence factors by literature reviews and surveys, builds the weighting system for classification of factors. And risk of trade is calculated based on frequency and severity of risk. Risk assessment methodology is suggested by integrating risk influence factors and risk of trade. From this, risk considering the conditions of construction sites can be derived and based on the derived risk, safety management can be performed more effectively. This study has meaning for assessing the risk which can reflect characteristics of construction site considering risk influence factors.
Optimization of Multiple Tower Cranes and Material Stockyards Layout
Kim, Kyong-Ju ; Kim, Kyoung-Min ; Lee, Sang-Kyu ;
Korean Journal of Construction Engineering and Management, volume 10, issue 6, 2009, Pages 127~134
This study aims to provide an optimal model for the layout of multiple tower cranes and material stockyards which have multiple candidate positions. In a high-rise building construction, the positional allocation of tower cranes and material stockyard has an effect on the travel time of material hauling. In addition, in case of using multiple tower cranes, specific location of a tower crane allocated to each material determines the efficiency of the works. Current optimal model limited to the optimization of position of single tower crane and material stockyards. This study suggests optimal model both for the positions of multiple tower cranes and material stockyards. Layout of multiple tower cranes requires additional allocation of each crane to each material hauling and control on the minimum distance between tower cranes. This optimization model utilizes genetic algorithm to deal with complex interaction on the candidate positions of multiple tower cranes, material stockyards, and types of materials. In order to identify its utility, case study was performed.
A Construction safety management system based on Building Information Modeling and Real-time Locating System
Lee, Hyun-Soo ; Lee, Kwang-Pyo ; Park, Moon-Seo ; Kim, Hyun-Soo ; Lee, Sa-Bum ;
Korean Journal of Construction Engineering and Management, volume 10, issue 6, 2009, Pages 135~145
The main goal of construction projects from the past has been enhancing efficiency by reducing cost and time. but, seeing the current condition of safety management of many construction companies nowadays, it is true that not much attention has been paid to safety management for a long time. However, there are paradigm shift from the cost and term of works to safety management in the construction industry, from this circumstance the safety management is evaluated more importantly. Though less accident happens compared to past, the accidents are getting greater because construction projects nowadays are bigger and more complex and monetary loss from the accidents are increasing. Also, the severity is getting greater and even fatal. For this reason, more improved safety management is very necessary. Therefore, we are to propose more efficient system for safety management in this thesis. Technical parts for developing system include many technique such as Real Time Locating system, and other techniques like Monitoring module based on BIM, Data Mart, Alarm are also applied together. Through this system, in the construction site, safety management is performed more effectively and widely because the system can manage the human resource and fluid situation. Also, safety manager can conduct more systematically and advanced safety management through human resource dominated safety management.
Evaluation on the impact of Lowest Bid Contracts on Site Operations in times of Severe Economic Downturn
Koo, Bon-Sang ; Jang, Hyoun-Seung ;
Korean Journal of Construction Engineering and Management, volume 10, issue 6, 2009, Pages 146~153
The year 2008 was a hard year for Korea's construction companies. The real estate downturn resulted in halting new construction and stopping existing work, and inflation of global oil prices caused price hikes in rebar and concrete materials. As a solution to reducing the budget, the newly appointed government announced plans to increase low cost bid contracts from 10 billion to 30 billion won. When such economical and political factors negatively impact the construction market, projects based on low cost contracts are the hardest hit. Many problems already inherent in low cost bid contracts become accentuated. Consequently, this provides an opportune time to actually study and analyze the issues in these projects. This paper introduces the findings made from investigating four projects struggling to make ends meet in the year 2008. Results show that flow of cash (i.e., liquidity), or lack thereof, was the root cause which in turn was hampered by failed mechanisms for design changes, material inflation. Attributing cash flow risk to the bottom of the production structure (i.e., small business subcontractors) was also a problem within the industry. Contractors need a better way to prepare against material price fluctuations, and owners need to assist in expediting payment during times of extreme downturn.