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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
A Study on the Method for the Estimate of Construction Management in the Program Management
Baek, Myeongchang ; Park, Junmo ; Park, Gilbeom ; Kim, Okkyue ;
Korean Journal of Construction Engineering and Management, volume 15, issue 5, 2014, Pages 3~12
DOI : 10.6106/KJCEM.2014.15.5.003
With the scale of program management getting larger and complexity, More accurate and precise method for management cost estimate is demanded. However, most of project management cost estimates are based on similar cases and hence can not reflect distinct features of each project. Cost estimate precision is also not up to the standards, and also troublesome to policy-making and budget allocation. Therefore, project typical model for cost estimate of Comprehensive Project Management is developed, and makes it easier to manage level of effort and allocate cost by applying characteristic factor of each project. This study categorized the project package by phase; planning, detailed design, and bid procurement, to develop typical model. And by designating specific level of effort required for each field and rank, the study aims to improve the method for calculating the detailed and objective program cost. Outcome of this study will prevent conflicts between client and contractor, accurately calculate program management contract cost for the client, and become a reference for the contractor to receive rational and practical payments for their work.
Analysis regarding the Environmental Impact of the Life Cycle of Housing Complexes in Korea
Choi, Doo-Sung ; Jeon, Hung-Chan ; Cho, Kyun-Hyong ;
Korean Journal of Construction Engineering and Management, volume 15, issue 5, 2014, Pages 13~21
DOI : 10.6106/KJCEM.2014.15.5.013
This study on condominium complex will adopt the quantitative assessment of the influence on the environment throughout the entire life cycle of buildings. This paper applies input-out analysis in order to analyse embodied energy regarding input of materials at material production phase. Also, it calculates environment load at use and demolition and destruction Phases of buildings as analysing energy consumption. The study categorises environment load as six impact categories and undertakes environmental impact evaluation. The consequence shows that the environment load of multi-unit dwelling takes up 88.2% out of the entire environment load of condominium complex. Also, as a result of analyzing the environmental impact of the life cycle of condominium buildings, it was found that such environmental impact comprised of about 11.96% of all industries in Korea that had an environmental impact.
Dynamic Relationship between Domestic Construction Market Condition and Overseas Construction Business
Jang, Sewoong ;
Korean Journal of Construction Engineering and Management, volume 15, issue 5, 2014, Pages 22~30
DOI : 10.6106/KJCEM.2014.15.5.022
This study undertakes a comparative analysis of the correlation between the condition of the domestic construction market and the expansion of overseas projects within construction companies, based on the vector error correction model. The analysis results verified that, in the post-IMF crisis period, domestic construction companies took on more overseas projects only when the residential construction market slowed down. Compared to the pre-crisis period, construction companies grew more responsive to the condition of the domestic market for residential construction, and they took on more overseas construction projects when the domestic market slumped. This is because the business portfolios of Korean construction companies` render them highly vulnerable to the condition of the residential construction market. When the domestic residential market slows down, the business condition of construction companies quickly takes a turn for the worse, and to cope with this, they turn to overseas projects to compensate for the slowing of the domestic market. As the analysis shows, expanding overseas construction projects as a way to turn around business condition amid a slow residential construction market actually undermines the management of the companies even further. In other words, shifting business focus toward an overseas market during a hard time might be useful for securing cash flow, but might not help to restore profitability. Thus, construction companies need to carefully manage their level of business diversification to ensure strategic flexibility.
Forecasting of Car Distribution Considering the Population Aging
Kim, Hyunwoo ; Lee, Du-Heon ; Yang, Junseok ;
Korean Journal of Construction Engineering and Management, volume 15, issue 5, 2014, Pages 31~39
DOI : 10.6106/KJCEM.2014.15.5.031
It has been a long time since cars had become important means of transportation in human life. Since 1970s, cars have been increasing steadily because of rising individual income and changing lifestyle toward leisure and convenience. The number of cars is just 1.8 per thousand populations in 1970s, however, in 2012, it has increased to 291.15. Forecasting the demand for cars would be useful to plan, construction or management in the field of motor industry, road building and establishing facilities. Our study predicts the demand of cars through estimating the growth curve model. Especially, we include ageing variables to forecasting identifying the effect of ageing on the demand of cars. The main findings are as follows. In 2045, the number of cars is expected to reach 486.8 per thousand populations with passing a primary saturation point at early 2020s. Also, due to effect of ageing, the predicted demand of cars is about 10% lower than in case of which if ageing effect not exist.
Chemical/Biological/Radiological Protective Facility Entering Time Estimation Simulation with Procedure Analysis
Park, Sun Ho ; Lee, Hyun-Soo ; Park, Moonseo ; Kim, Sooyoung ;
Korean Journal of Construction Engineering and Management, volume 15, issue 5, 2014, Pages 40~48
DOI : 10.6106/KJCEM.2014.15.5.040
As CBR(Chemical, Biological, and Radiological) attack increases, the importance of CBR protective facilities is being emphasized. When CBR warfare emerges, a task force team, who exist outside of CBR protective facility, should enter the CBR protective facility through neutralizing process in CCA(Contamination Control Area) and TFA(Toxic Free Area). If a bottleneck occurs in the process or zones, the task force team cannot enter the CBR protective facility efficiently and may cause inefficiency in its operation performance or result in casualties. The current design criteria of the CBR protective facility is only limited to ventilation system and it does not consider how much time it takes to enter the facility. Therefore, this research aims to propose the entering time estimation model with discrete event simulation. To make the simulation model, the procedure performed through CCA and TFA is defined and segmented. The actual time of the procedure are measured and adapted for the simulation model. After running the simulation model, variables effecting the entering time are selected for alternatives with adjustments. This entering time estimation model for CBR protective facility is expected to help take time into consideration during the designing phase of CBR protective facility and help CBR protective facility managers to plan facility operation in a more realistic approach.
Development of Electrical Construction Cost Index Applied Chain-Weighted Method
Park, Houng-Hee ; Choi, Seung-Dong ; Hyun, So-Young ; Park, Min-Young ;
Korean Journal of Construction Engineering and Management, volume 15, issue 5, 2014, Pages 49~60
DOI : 10.6106/KJCEM.2014.15.5.049
Electrical construction cost index has been applied fixed-weighted method. But fixed-weighted method can`t faithfully reflect industrial structure changes. Because the weighted value and price index of fixed-weighted method is fixed on the basic period. Electrical construction cost index is composed of the cost of labor and material. So it fluctuates sharply whenever the construction association of korea announces the laborer`s wage of electrical construction. And it depends on only the producer price index changes that is related to electrical construction since then. So a study is focused on developing electrical construction cost index applied chain-weighted method. Because chain-weighted method can reflect the realities of the electrical construction and alleviate the sudden changes of labor cost with link index. We verify that chain-weighted method relieves the step states of electrical construction cost index applied fixed-weighted method.
Improvement of Architecture-Engineering Service Procurement System for Public Construction Project
Kim, Sung-Il ; Chang, Chul-Ki ; Park, Dae-Keun ; Bae, Yu-Jin ;
Korean Journal of Construction Engineering and Management, volume 15, issue 5, 2014, Pages 61~70
DOI : 10.6106/KJCEM.2014.15.5.061
Various procurement systems for Architecture-Engineering service for public construction project are currently established by construction-related law. However, comprehensive framework and criteria for the selection of Architecture-Engineering firm are in absence. Even though various selection methods for Architecture-Engineering service are currently established by law, cost-based selection method is mainly used in selecting Architecture-Engineering firm for the service. This paper examined current use of procurement system for Architecture-Engineering service and drew problems in practice. Through analysis of problems and bench-marking of those systems in advanced countries and international organizations, several strategies to improve performance of Architecture-Engineering service and to maximize the efficiency were suggested. The suggestions include framework and guideline to select a procurement method for the service which is being considered for the project and way of improving current procurement system. These suggestions will be a foundation for utilizing appropriate procurement system for the specific project and can make domestic Architecture-Engineering firm more competitive in the global market by breaking form the cost-based selection method in the selection of Architecture-Engineering firms.
Policies and Tasks for Improving Korean CM Industry
Kang, Seunghee ; Jung, Youngsoo ; Kim, Namjoon ; Shin, Dongwoo ;
Korean Journal of Construction Engineering and Management, volume 15, issue 5, 2014, Pages 71~81
DOI : 10.6106/KJCEM.2014.15.5.071
As domestic construction investment has been gradually reduced, the issue of expanding overseas CM market has increased. Strengthening CM capability from the view point of project life-cycle is required in overseas CM market. However, current regulations institutionally force public CM services to focus on the construction phase. Therefore, Korean CM firms can hardly have the opportunities for accumulating technical competitiveness especially for pre-construction phase. Result of this study shows that the total efforts in terms of man-hours for the construction phase is found to be more than 78 percent in domestic public CM projects. In this context, this study proposes the policies and tasks for improving `rigid man-hour placement`, `unreasonable CM fee standards`, `CM firm selection method`, `unreasonable business scope decision`, and `evaluation of owner`s project management capability` in order to improve domestic CM Industry as well as to expand overseas CM market successfully.
The Study on Evaluating the Policy Value of Public Projects for Housing Welfare - Focused on the Remodeling Projects for Long Term Rental Housing -
Cho, Yongkyung ; Lee, Sangyoub ;
Korean Journal of Construction Engineering and Management, volume 15, issue 5, 2014, Pages 82~93
DOI : 10.6106/KJCEM.2014.15.5.082
Long Term rental housing, which is supplied for performing housing welfare, has been aging from permanent rental housing. Therefore, variety housing welfare projects are planing and performing for improving aged facilities. However, although every welfare policy are necessary, we have to efficiently allocate and commit the funds, because the fund and resources is limited. And there is required the feasibility study before performing public project for housing welfare, because it needs large amount of financial supports by government. Meanwhile, because most of existed studies are focused on guide development, it has limitation to apply the result of existed studies in this study, which considers public remodeling project for housing welfare. But in reality, public project is been decided by willing of policy decision-maker. Therefore, in this study, we suggest the evaluation method of policy value for two alternatives(remodeling and maintain) of a aged long term rental housing. To extract the attributes of policy value, we considered categorized items of preliminary feasibility study. Through extracting attribute factors of policy value for aged long term rental housing, we can calculate the policy value of remodeling and maintain alternatives by using MAUT. As a result of analysis, we can find that the utility value of remodeling is 0.6161 and the utility value of maintain is 0.2461 and also the utility of remodeling is higher than utility of maintain. Therefore, when we plan the public projects for performing housing welfare, we can choose remodeling alternative rather than maintain alternative using quantitive data.
An Analysis on Expanding Construction Insurance and Estimating Necessary Budget
Kim, Myeongsoo ;
Korean Journal of Construction Engineering and Management, volume 15, issue 5, 2014, Pages 94~102
DOI : 10.6106/KJCEM.2014.15.5.094
This study analyzes necessity of expanding construction insurance and estimates required budget. Construction insurance is obliged by National Contract Law and Local Contract Law to protect projet owners and contractors from any unexpected construction risk such as financial losses in construction process. Currently the contracts of design-build and alternate-bid projects as well as PQ project, which are greater than 20 billion won, require the contractors to provide construction insurances in Korea. Insurance premiums are borne by the public project owner. Those contractors whose contract volume is less than 20 billion won burden all risks of projects at their cost. This causes equity problem. Because small-and-medium contractors are discriminated against large contractors since insurance-obliged projects are performed by large contractors and insurance premiums are borne by the public project owner. On the other hands, in all engineering projects, regardless of volume, insurance premiums are borne by the project owner. Therefore current regulation has to be improved, by expanding to all public projects. The average ratio of unobliged projects is 46%, in recent 3 years, prime cost of insurance companies is estimated 0.2%. Moreover considering risks of each construction type, prime cost of unobliged works is estimated as 0.13%. Hence additional necessary budget is estimated to be 2.09 billion won if total volume of public work is 3.5 trillion won. And 2.39 billion won is derived if total volume of public projects is 4 trillion won.
A Survey of DEA Applications in Measuring the Efficiency Performance of Construction Organizations
Lee, Yoon-Sun ;
Korean Journal of Construction Engineering and Management, volume 15, issue 5, 2014, Pages 103~114
DOI : 10.6106/KJCEM.2014.15.5.103
Data envelopment analysis (DEA) measures the relative efficiency of decision making units (DMUs) with multiple performance factors that are grouped into outputs and inputs. DEA has proven to be superior to simple aggregation of performance measures, and is also useful for evaluating the performance of construction companies for comparison with competitor performance. The purpose of this study was to survey literatures on the application of DEA methodology and to propose a methodological scheme to measure the performance of construction organizations. Articles on previous studies were surveyed and examined as part of a comprehensive review. The survey revealed that the application of DEA in the construction industry was li mited. Further, the survey indicated that there is a need for the development of a methodological framework on the special goals and subjects of performance measurement, methods of data structure and collection, selection of appropriate DEA models, analysis of results, and post-test. Based on the survey, this study identified and discussed the types of major issues and topics for future studies from a methodological perspective, which could be helpful to researchers interested in using DEA to study performance issues in construction organizations.
An SNS Based Construction Information Communication and Sharing System
Ahn, Jaesang ; Kim, Namho ; Chin, Sangyoon ;
Korean Journal of Construction Engineering and Management, volume 15, issue 5, 2014, Pages 115~126
DOI : 10.6106/KJCEM.2014.15.5.115
Although various IT-based services including PMIS are used at construction field, there have been limits on communications, such as fast reaction, information loss, and information security in the real world. Therefore, this paper proposes to adapt a social network service (SNS) that has already been used for information management and sharing information at the company level in other industries in order to support construction information management and communication in a fast and accurate manner. Following the requirement analysis through literature review and site interviews, the paper presents an SNS-based construction information communication and sharing system named PMIS+. PMIS+ was tested and validated for its feasibility at construction sites and it was proved that the proposed system and information management framework using the system could be helpful for effective information management at construction fields.
Predicting Project Performance by Analyzing Key Success Factors on Project Fiancing(PF) Development
Lee, Dong-Gun ; Cha, Hee-Sung ;
Korean Journal of Construction Engineering and Management, volume 15, issue 5, 2014, Pages 127~137
DOI : 10.6106/KJCEM.2014.15.5.127
Project Financing (PF) development project is the type which influences national economy and building industry largely because it is exerted by using borrowed money from many kinds of investors and huge amount of financial raising. Many domestic PF projects are focused mainly on the profit maximization lacking in a sufficient feasibility study. Nowadays many projects are suspending due to the global finance debacle and stagnation of real estate industry. Therefore, in this paper, risk factors of PF project are deducted and Key Success Factors (KSFs) are derived through Factor-Analysis and qualified using Fuzzy-AHP method. And through the evaluation of the derived success factors in real projects, a strong correlationship has been identified between the score of each PF success factor and the level of success and/or expected rate of return (ROR). So, the result of this paper can help decision makers of the PF projects make a better decision and give a meaningful guidance in achieving successful PF projects.
Development of Bill of Service Framework for Modular Housing Construction
Hwang, Jinsub ; Choi, Sanghee ; Lee, Jaeseung ; Kim, Yea-Sang ;
Korean Journal of Construction Engineering and Management, volume 15, issue 5, 2014, Pages 138~146
DOI : 10.6106/KJCEM.2014.15.5.138
Modular construction is one of the arising issues in the Korean construction industry due to shorter construction period and higher productivity on site. It is also expected that modular construction market would expand rapidly because of increasing demand of small houses by nuclear families and eco-friendly construction. However modular construction cases have been limited in Korea because of little demand in the market and the construction prices are even higher that the regular reinforced concrete methods. Even worse, because there is no standard bill of services exists in the industry, it may lead to the risk of construction expenses. So, the purpose of this study is focused on the development of bill of services which reflects characteristics and process of modular construction. In order to do this, the concepts and process of modular construction, WBS and CBS are analyzed. Analyses of the case studies and experts interview were executed so that proper principles for organizing bill of service of modular construction is established. Finally according to the 3 steps of modular construction, factory manufacturing, on-site modular construction and on-site general construction, the standard bill of services were suggested with the related coding system.
Housing Market Participants` Decision Process and The Dynamics of Ripple Effect on Korean Housing Market - Focusing on The Cause of Housing Market Stagnation and Housing Policies After 2008 Global Financial Crisis -
Hyun, Hosang ; Lee, Hyun-Soo ; Park, Moonseo ; Hwang, Sungjoo ;
Korean Journal of Construction Engineering and Management, volume 15, issue 5, 2014, Pages 147~159
DOI : 10.6106/KJCEM.2014.15.5.147
After 2008 global financial crisis, Korean housing market has experienced stagnation. So it caused housing market problems like housing price reduction, rising rent cost and so on. For housing market normalization government announced policies but Korean housing market didn`t recover from stagnation. So, to understand why Korean housing market couldn`t overcome the recession and why the policies didn`t be effective, this research analyzed housing market participants (home owner, housing demand) based on the law of supply and demand and the psychological effect on their transaction intention based on behavioral economics(behavioral finance). Based on the analysis this research tested the effectiveness of announced policies using System Dynamics. The result showed that the amount of transaction and mortgage loan was influenced by the length of time to draft policies.