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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 13, Issue 6 - Nov 2012
Volume 13, Issue 5 - Sep 2012
Volume 13, Issue 4 - Jul 2012
Volume 13, Issue 3 - May 2012
Volume 13, Issue 2 - Mar 2012
Volume 13, Issue 1 - Jan 2012
Selecting the target year
Open BIM-Based Quality Control for Enhancing the Design Quality in the Architectural Design Phase
Seo, Jong-Cheol ; Kim, Han-Joon ; Kim, In-Han ;
Korean Journal of Construction Engineering and Management, volume 13, issue 4, 2012, Pages 3~15
DOI : 10.6106/KJCEM.2012.13.4.003
Currently, Building Information Modeling (BIM) is an emerging technological shift that involves applying and maintaining an integral digital representation of all building information for different phases of the project life-cycle. Although BIM has been recognized as a main stream in the construction industry, it is difficult to ensure the quality of BIM data due to the problems such as internal errors of BIM tools and lack of guidelines considering design quality. Such problems give lots of difficulties to BIM adoption for designers, constructors, and owners. Therefore, it is necessary to develop the requirements including the object-oriented modeling method and property definition by applying the Industry Foundation Classes (IFC) which is an ISO/PAS 16739 standard for ensuring the quality of BIM data. This research aims at proposing the requirements considering the quality of BIM data and demonstrating the efficiency of the requirements with using the Solibri Model Checker (SMC) which is a quality control tool in a case study.
Improvement of estimating method for construction management service fee by case study
Lee, Ung-Kyun ; Yoo, Wi-Sung ; Kim, Dong-In ; Kim, Tae-Hoon ; Cha, Min-Soo ; Cho, Hun-Hee ;
Korean Journal of Construction Engineering and Management, volume 13, issue 4, 2012, Pages 16~24
DOI : 10.6106/KJCEM.2012.13.4.016
The objective of this paper is to suggest the improvement of estimating system for construction management (CM) service fee through the analysis of the previous literatures and criteria and case study. In order to do this, this paper considered the relevance of existing criteria to estimate the CM service fee, the condition of input ratio of engineering resources in the real cases, and current utilization strategy of nonresident technical engineers. Based on the analysis, the following problems were identified; a) the different estimating system for CM fee and construction supervision fee, b) impractical estimating system for the CM fee, and c) inappropriate allocation of human resources for CM. Consequently, this paper suggested the following 4 items for the improvement of the existing system; (1) modification of the current structure of CM fee calculation, (2) rationalization of current level of the CM fee which is required to be raised approximately 5.4 percent compared to design or supervision fee, (3) securement of elasticity of the input ratio of engineering resources from the inception phase, and (4) development of the utilization strategy of nonresident engineers based on the technical requirement of the jobsite. Thus, it is anticipated that this research would affect the compensation package of CM in order to make the estimation process of CM service fee more efficient and to revitalize CM as business.
Process Development and Verification for Construction VE Object Selection of Performance-Oriented
Kim, Soo-Yong ; Yang, Jin-Kook ;
Korean Journal of Construction Engineering and Management, volume 13, issue 4, 2012, Pages 25~32
DOI : 10.6106/KJCEM.2012.13.4.025
The current VE activity is recognizing the VE object selection in job-plan simply as formal procedure. Therefore, many problems are happening in the process of selecting VE object during the preparatory stage. As a result of trying to analysis problems through literature review and expert interview, the problems were surveyed such as the lack of connectivity between preparatory stage and analytical stage, the temporal cost-based restrictions, and lack of recognition in VE team members in the existing method of selecting subjects centering on the high-cost field. Accordingly, this study suggested the improved method of selecting VE objects in order to solve this problem in the stage of selecting VE objects. An improvement method of selecting VE objects is what selects the secondary VE subjects by applying again Fish-Bone diagram and Worth technique based on the primary VE objects, which were selected by the conventional technique of selecting objects in the high-cost field. To verify effectiveness in the proposed improvement method, it tried to apply it to the actual case of the road construction VE project. As result of, the improvement method was analyzed to be considerably effective in comparison with the existing selection method of VE objects. Therefore, the Improvement method will contribute to increasing the VE performance.
A Study on Vitalizing Plans of Extension Remodeling for Apartment Housings
Cho, Jae-Yong ; Lee, Kuen-Woo ; Yoo, Hyun-Seok ; Kim, Young-Suk ;
Korean Journal of Construction Engineering and Management, volume 13, issue 4, 2012, Pages 33~47
DOI : 10.6106/KJCEM.2012.13.4.033
548 thousand apartment houses of Seoul has been used over 15 years and remodeling is available. It is 42% of the overall apartment houses currently and it is assumed to increase to 800 thousand in 2015. The maintenance work is divided to reconstruction and remodeling. Due to the regulations of the government, expansion remodelling has been the most considered alternative. However, 75% of the extension remodelling, yet, are in the preliminary phases. Thus, this study suggests factors hampering the vitalization of extension remodelling and solutions for each factor by means of Delphi analysis method.
Development of an Automated Gangform Climbing System for Apartment Housing Construction - Structural Stability and Tower Crane Lifting Load Analysis -
Lee, Jeong-Ho ; Yang, Sang-Hoon ; Kim, Young-Suk ;
Korean Journal of Construction Engineering and Management, volume 13, issue 4, 2012, Pages 48~59
DOI : 10.6106/KJCEM.2012.13.4.048
Gangform, compared to the traditional forms, is a systemized form which can reduce construction duration and cost by the advantage of using it repeatedly. However, transportation and climbing process of the Gangform is highly dependant on the performance of tower crane. Gangform climbing process takes one day out of six to seven days of a structural work cycle. Tower cranes can not be used in other lifting works when they lift the Gangform during the structural work cycle, causing the delay in the construction project. Numerous efforts and researches have been done in domestic and international industry to solve such limitations of Gangform climbing process. Especially, "A Study on the Development of Automatic Gangform Climbing System for Apartment Housing Construction"has suggested a conceptual model which can climb the Gangform system without a tower crane. In this paper, the technical and economical feasibilities of previously proposed Automatic Gangform climbing system are examined by evaluating its structural stability and lifting load reduction effect.
Comparative Analysis of Default Risk of Construction Company during Macroeconomic Fluctuations
Choi, Jae-Kyu ; Yoo, Seung-Kyu ; Kim, Jae-Jun ;
Korean Journal of Construction Engineering and Management, volume 13, issue 4, 2012, Pages 60~68
DOI : 10.6106/KJCEM.2012.13.4.060
The past IMF foreign exchange crisis and subprime financial crisis had a big influence on variability of macroeconomics, even if the origin of its occurrence might be different. This not only had a significant infrequence on the overall industries, but also produced many insolvent companies by being closely linked with a management environment of an individual construction company leading the construction industry. Actually, the level of default risk of construction companies before and after fluctuation of macroeconomics gets to experience a rapid changing process, and a difference in reaction against shock exists according to each company. Accordingly, the purpose of this paper is to confirm the fluctuation process of the default risk of construction companies under the fluctuation of macroeconomics such as the IMF financial crisis and the subprime mortgage crisis. As an analysis result, it is judged that the subprime financial crisis gave bigger shock to construction companies than the foreign exchange crisis, and it is expected that this would have a relation with the construction market before shock of macroeconomics. In addition, it was analyzed that when comparing insolvent companies with normal companies, the recovery speed of normal companies is faster. It is judged that this was affected by a difference of internal business capacity between insolvent companies and normal companies.
The Development of Urban Metro Maintenance Facility System Using Construction Classification System Management
Hyun, Ji-Hun ; Yang, Byong-Soo ; Moon, Sung-Woo ;
Korean Journal of Construction Engineering and Management, volume 13, issue 4, 2012, Pages 69~77
DOI : 10.6106/KJCEM.2012.13.4.069
The construction data should be controlled from the life-cycle perspective. The current PMIS (Project Management Information System) usually focuses on the construction operation stage. The PMIS does consider the utilization of the construction in the maintenance of constructed facilities. This paper tries to interface the construction data with the maintenance data for effective use of construction data in the life-cycle perspective. To achieve the research objective, a maintenance breakdown structure is established and connected to the work breakdown structures. The connection of the two breakdown structures provide a structured utilization of construction data for efficient maintenance work activities. A prototype suggests that the interface of maintenance and work breakdown structures can help provide a construction and maintenance data in a more efficient way for maintenance activities.
Implementing Activity-based LCA Model for Carbon Dioxide Emission Analysis and Allocation of Environment Cost
Lim, Ji-Youn ; Yi, June-Seong ; Shin, Seung-Woo ; Son, Jeong-Wook ;
Korean Journal of Construction Engineering and Management, volume 13, issue 4, 2012, Pages 78~88
DOI : 10.6106/KJCEM.2012.13.4.078
As worldwide efforts to reduce global warming gases, the construction Industry is endeavoring to diminish carbon dioxides emissions. Especially, by introducing the LCA methodology to the industry, A variety of related studies to measure the emission of carbon dioxides have been conducted. However, when the conventional LCA methodology is applied to the construction projects, some limitations have been reported. To overcome the restrictions derived from the industry characteristics, this research suggested the Activity-based LCA model by applying the Activity-based Costing (ABC), which breaks down the whole life cycles into more detailed stages. By implementing the newly developed model, forecasting accuracy of
emission was elevated, and the critical control points on carbon dioxides were established. Through the case study of aluminium curtain-wall system, this research verified the usefulness of the Activity-based LCA.
Risk Factor Classification and Weight Estimation for Urban Regeneration Project
Cho, Jae-Kyung ; Hyun, Chang-Taek ; Yoon, You-Sang ; Jin, Run-Zhi ; Cha, Yong-Woon ;
Korean Journal of Construction Engineering and Management, volume 13, issue 4, 2012, Pages 89~99
DOI : 10.6106/KJCEM.2012.13.4.089
Urban regeneration projects tingeing the shape of mixed-use development, due to the nature of the business, involve risk factors such as protracted business conflict among participations, subjects, complex approval and permission procedure, frequent policy changes, etc. Therefore, systematic risk management is needed to effectively manage the numerous risk factors that may occur during the process course of project. However, risk management of large and complex development projects such as urban regeneration projects is in the introduction stage yet and somewhat one time risk management plan has been established. Therefore, in this study, in order to systematic risk management of urban regeneration projects inhered numerous risk factors, risk factors for urban regeneration projects through preceding studies and case studies were presented. Also risk factors are classified in accordance with business propulsion phase, by estimating the importance for these, step by step emphasis on managed subjects of risk management was proposed.
Formalization of Productivity Metrics for Equipment in Multi-sectioned Road Construction Projects
Kim, Hong-Yeul ; Koo, Bon-Sang ;
Korean Journal of Construction Engineering and Management, volume 13, issue 4, 2012, Pages 100~109
DOI : 10.6106/KJCEM.2012.13.4.100
Large road construction projects are typically partitioned into sections that are then contracted individually to contractors. Each section requires using similar heavy equipment including excavators, dump trucks and pavers, which constitute the highest cost. Normally the equipment is not shared between them, as each contractor wishes to have their equipment readily available. However, such practices result in very low utilization of these equipment. The goal of this research is to develop a programmatic resource sharing system in which contractors can share equipment depending on the changing needs of a multi-sectioned road project. This paper introduces the results of a survey performed to investigate how contractors currently manage the supply and demand of equipment and the equipment that are practical for sharing across a project. More importantly, the paper describes a set of metrics (DPR, nDPR, SDI) needed to quantify the amount of supply/demand variance occurring in each section. The metrics were used on an actual road construction project, and the results show that each section suffers from an imbalance between its monthly planned and actual utilization of equipment. The results also indicate that the sharing of the equipment can lead to potentially large savings as equipment requirements can be met within a project as to short leasing from outside vendors.
Implementation of TRL and TRA tools to Korean Construction and Transportation R&D Evaluation for Improving Practical Use
Kim, Nam-Gyun ; An, Byung-Ho ; Lee, Hyun-Seok ; Choi, Jae-Hong ; Park, Sang-Hyuk ; Kim, Yea-Sang ;
Korean Journal of Construction Engineering and Management, volume 13, issue 4, 2012, Pages 110~119
DOI : 10.6106/KJCEM.2012.13.4.110
Recently as the advent of knowledge-based competition, the major industrialized countries including Korea, are expanding their R&D investment and promoting policies for diffusing of R&D performance. For this, NASA, DoD and such agencies in the United States define Technology Readiness Level (TRL) as a quantified indicator for performance management, and also impose Technology Readiness Assessment (TRA) as a evaluation system, that evaluates technology maturity using TRL. These tools are judged to be very effective in R&D projects especially with the object of practical use. When this concept is applied to the domestic national construction and transportation R&D project for the purpose of practical use, it is expected that the evaluation system overcomes its weakness of focusing only on academic results and improves significantly on intent of achieving practical use. Thus in this study, TRL/TRA implementation model of construction and transportation R&D project for achieving purpose of practical use is presented through an analysis of TRL/TRA concept and domestic national construction and transportation R&D project's characteristics and current evaluation/management system.
The Analysis of Job Stress of Workers in the Architectural Design Firm After the Introduction of BIM
Seo, Hee-Chang ; Oh, Jung-Keun ; Kim, Jea-Jun ;
Korean Journal of Construction Engineering and Management, volume 13, issue 4, 2012, Pages 120~131
DOI : 10.6106/KJCEM.2012.13.4.120
Today, companies exist amid unlimited competition and uncertain adminstration environment, so hands-on workers are being exposed to various job requirements and stress due to this. Especially, employees in the design firm are physically difficult because of heavy working intensity unlike other industrial field, and because the process is interrelated unlike working of a five-day workday of the other industry, it is difficult to guarantee periodic holidays and vacation. In addition, recently, while BIM is introduced in the construction industry, various changes in the individual role as well as organizational dimension such as business environment and scope & role, etc. are required, so it is the actual situation that the category and factors of job stress due to this are being also changed. Accordingly, this research has grasped important and weak sectors according to characteristics such as career, position, gender, education and existence/nonexistence of BIM template, etc. by confirming a job stress level and inducing factors of hands-on workers at the design firm. This research has a meaning in constructing a business environment of a design firm that is a main participant of BIM-based projects that are expected to have high utilization in the future.
An analysis on CO
emission of structural steel materials by strength using Input-Output LCA
Hong, Tae-Hoon ; Ji, Chang-Yoon ; Jang, Min-Ho ;
Korean Journal of Construction Engineering and Management, volume 13, issue 4, 2012, Pages 132~140
DOI : 10.6106/KJCEM.2012.13.4.132
Along with the increasing interest in environmental problems such as global warming, the South Korean government has established policies and regulations to reduce the amount of greenhouse gases, targeting a 30% reduction of
compared to business-as-usual levels by 2020. Thus, there have been many studies in construction field to control and reduce the amount of
emitted from buildings.
emission from the building construction could be obtained by using the life cycle assessment(LCA) methodology. In LCA, it is essential to have life cycle inventory(LCI) data of construction materials consisting of
emission data that have been defined and examined in a detailed way in order to obtain more accurate and detailed
emission of buildings. To date, however, the LCI data have been acquired only for the representative materials. Accordingly this study aimed to propose detailed
emission data for steel rebar and H-beam, which are the essential structural steel materials, by strength and type. To accomplish the objective, this study used Input-Output LCA methodology which is based on the Input-Output table. It is believed that the
emission data of steel materials acquired from this study would allow a more accurate assessment of
emission for diverse structural design alternatives.
A Study on Asset Valuation Method for Road Facilities Maintenance
An, Jae-Min ; Park, Jong-Bum ; Lee, Dong-Youl ; Lee, Min-Jae ;
Korean Journal of Construction Engineering and Management, volume 13, issue 4, 2012, Pages 141~151
DOI : 10.6106/KJCEM.2012.13.4.141
Infrastructure are the essential element in the country for they are the basic facilities forming the basis of economic activity. In Korea Infrastructure which are subject to the management of government are increasing annually, and subsequently the budget of maintenance costs is expected to rise significantly. For the effective management of the constructed and accumulated infrastructure, the integrated management of the future assets will be needed which includes the determination of the asset status, management subjects, and the location, the maintenance of their performance and state, and the prediction of the cost required to increase their useful lifetime. However, in the domestic cases the road facilities valuation has not been done systematically, and the preparation and research on this is scarce. Thus, the systematic procedure for the road facilities valuation is required. In this paper the following study was conducted to derive the reasonable asset valuation methods. First, the valuation methods was investigated and summarized throughout the domestic and international research literature. Second, to apply the investigated valuation methods to the road facilities the valuation process that reflects domestic conditions and characteristics has been developed. Third, a working Bridge, Highways, and General national ways were applied to the general valuation process, and the results were analyzed. As a final step a schematic diagram of the asset management support by WDRC valuation method was presented.
Conceptual Cost Estimating System Development for Public Apartment Projects
Lee, Hyun-Soo ; Lee, Heung-Keun ; Park, Moon-Seo ; Kim, Soo-Young ; Ahn, Jo-Seph ;
Korean Journal of Construction Engineering and Management, volume 13, issue 4, 2012, Pages 152~163
DOI : 10.6106/KJCEM.2012.13.4.152
At the conceptual phase of a construction project, estimated construction cost is very important as it significantly influences the owner's decision-making. Accurate cost estimating, in the early stage of a public construction project, serves as a critical factor because initial decision-making effects the final cost of a construction project. However in the cases of Korean public apartment projects, excluding a few of the public owners, there is a problem in properly estimating construction cost due to the lack of construction cost estimating system. Thus, this research developed a public apartment cost estimating system using case-based reasoning that was suggested by a previous research with 66 cases of Korean public apartment projects. Based on the system experiments involving 19 public officers and 10 cases of Korean public apartment projects, the effectiveness of the system in terms of estimation accuracy and user-friendly was confirmed. As a result, the developed system has an error range of 1.47% to 13.74% and mean of 6.15%. In addition, the system was evaluated that it could greatly improve the current estimation task of public officers. Consequently, the results of this research can be used as a foundation for a technological advance in estimating construction cost and improving the accuracy and consistency of construction cost estimation.