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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
A Study on the Non-residential Building Envelope Remodeling for Energy Efficiency
Jang, Hyun-Sook ; Lee, Sang-Ho ;
Korean Journal of Construction Engineering and Management, volume 13, issue 6, 2012, Pages 3~12
DOI : 10.6106/KJCEM.2012.13.6.003
The slowdown of private building industry resulted in growth of remodeling market as a way to improve energy performance. Remodeling is considered more cost-effective and eco-friendly approach for energy efficient building than new construction. Since 2008, Seoul has promoted Building Retrofit Project (BRP) preponderantly to attract energy-saving renovation by supporting building owners to switch building system into energy-saving system when they remodel their old buildings. According to 2012 press release, 254 Private sectors participated in this green building project and annually reduced 41000ton of greenhouse gas emission, 14000TOE, which also result in 7.5 billion won energy cost savings per year. The paper focuses on the building envelope remodeling as a way to improve energy efficiency. Different components of the building envelope such as wall insulation, window, and shading, were applied to the baseline model and the comparison was analyzed to come up with the ideal solution. This study only assesses the building envelope as to suggest the way to redesign the better energy performing building. Offering solution focusing on the architectural feature is essential because it will provide basic information and standard when remodeling a building for energy efficiency, especially, for the nonresidential buildings used as rental offices.
Test-bed Development for Long-term Monitoring of Small Bridge Asset Management
Park, Jae-Woo ; Chae, Myung-Jin ; Lee, Giu ; Cho, Moon-Young ;
Korean Journal of Construction Engineering and Management, volume 13, issue 6, 2012, Pages 13~23
DOI : 10.6106/KJCEM.2012.13.6.013
While Category 1 and Category 2 bridges are intensively inspected and carefully managed, many small bridges that are not in the Category 1 and 2 are often forgotten until they decay in serious condition. Since many of these small bridges located in the populated city, failure of them would cause huge negative impact on the community. This paper focuses on the small size concrete bridges for timely repair and rehabilitation work for the effective operation and management. Test bed is developed to define the key parameters to forecast the long term performance of the bridges, mostly concrete box bridges. Key parameters suggested in this paper are cumulative fatigue due to repetitive heavy traffic loads and the acid attacks for concrete material deterioration. The cumulative fatigue is measured by the use of the mileage concept. For the long term data collection and inspection, stable and easy to use data collection system is installed as a test bed. The contribution of this research work is on the development of the test bed to define the key parameters of bridge deterioration.
An Effect Analysis of Subtracting Rebar Volumes in Reinforced Concrete Members on Quantity Take-off
Kang, Jong-Min ; Kim, Seong-Ah ; Chin, Sang-Yoon ;
Korean Journal of Construction Engineering and Management, volume 13, issue 6, 2012, Pages 24~32
DOI : 10.6106/KJCEM.2012.13.6.024
Reinforced Concrete is the most dominant structure type for buildings in South Korea. Reinforced Concrete is one of materials having the most cost and quantity at construction projects. It is important to manage concrete quantity so that the total project cost is not affected due to underestimate or overestimate of its quantity. Generally the concrete quantity is taken-off based on the volume of the space inside forms without subtracting volumes of rebar embedded, which cannot be considered to make quite accurate results. Resource waste and extra cost due to over or under estimate of quantity occur since they cannot estimate accurate quantity at practices. Therefore, the objective of this paper is to analyze the effect of the volume for rebars embedded in reinforced concrete members. By comparing the quantity based on the existing method with the one from BIM data, it was found that about 1~2% of quantity discrepancy was observed while the typical concrete waste rate is 1 % at the current practice.
Study on introduction of `Pre-Agreement system for Additional Incidental Cost` related to construction time extension
Jeong, Ki-Chang ; Lee, Jae-Seob ; Park, Yang-Ho ;
Korean Journal of Construction Engineering and Management, volume 13, issue 6, 2012, Pages 33~44
DOI : 10.6106/KJCEM.2012.13.6.033
This study is as to payment improvement method of additional incidental cost to be occurred upon extension of public construction time. According to the result of analysis about the cause of non-payment of additional incidental cost of construction time extension through site examples, it was found that difficulties exist in disputes & proofing over the scope of actual cost recognition, and in this regard the result of experts opinion indicated that a construction extension pre-agreement system can be executed which agrees the scope of recognition of additional incidental cost of construction time extension once the statistical standard is clear and accurate. Accordingly, in this study, by totalling multiple sites data, calculations were implemented in terms of type of construction projects, amount of constructions, period of constructions. According to the result of calculation, the element of type of construction project and construction period appears to have none direct effect to the occurrence of additional cost of construction time extension, but direct relationship was indicated related to the contract amount element. In view of above, in this study a standard additional incidental cost of construction time extension was proposed, and presented a system improvement plan to implement the construction extension pre-agreement system.
Analysis of Competency Assessment Using BSA for ODA Loan Construction Projects
Kim, Hwa-Rang ; Jang, Hyoun-Seung ;
Korean Journal of Construction Engineering and Management, volume 13, issue 6, 2012, Pages 45~53
DOI : 10.6106/KJCEM.2012.13.6.045
Recently, with achieved US$ 500 Billion international cumulative construction order, the Korean government presented overseas construction industry visions for international orders of US$ 100 Billion and entering the top five countries in global construction market. Also, Korean companies are developing strategies for expansion of international markets. However, ODA loan projects are low risk for the Korea Construction companies trying to advance their overseas business. This study provides data-based advice on securing competence for Korean construction companies entering the global market through the ODA loan projects. To analysis construction firm`s competitiveness for ODA loan project, FGD was utilized and BSA model was applied to the valuable analysis. Competencies highly assessed were construction quality control, relationship building through high-level diplomatic activities, and project management. Competencies requiring urgent improvement were handling risks of local countries, financing projects, and developing know-how within participating companies.
A Study on Development of Construction Engineering Business Survey Index
Kim, Hyun-Woo ; Chin, Kyung-Ho ; Lee, Kyo-Sun ; Kim, Mi-Ri ;
Korean Journal of Construction Engineering and Management, volume 13, issue 6, 2012, Pages 54~62
DOI : 10.6106/KJCEM.2012.13.6.054
Currently, construction engineering industry of high value and rapid growing has been viewed as a future oriented industry. Thus, compared to other industries, its analysis system for business trend seems insufficient. This research has developed a business survey index model targeted for construction engineering industries, and business trends for 4/4 quarter of 2011 as well as 1/4 quarter of 2012 were surveyed as important traits were analyzed. Business Survey Index of Construction Engineering has been constructed in form of an index in order to accurately judge different economic states of the industry such as funding areas, human resources, payability, ordering scale, status of domestic and foreign markets, Difficulties in Management, and improvements in policies. In the future, CEBSI will not only be applied on the construction engineering industry, but it will also be used as the economic state of all construction industries as well as the prospect data. Thus, it will be utilized as basic resources that can establish systematic and accurate policies.
Evaluation of defective risk for the finishing work of apartment house
Kim, Jin-Hyun ; Go, Seong-Seok ;
Korean Journal of Construction Engineering and Management, volume 13, issue 6, 2012, Pages 63~70
DOI : 10.6106/KJCEM.2012.13.6.063
The apartment house taking most part of our housing types was facing the limit of consumption from the housing supply-oriented policy in the past of rapid urbanization resulting in being transferred to the housing supply-oriented one. Accordingly the requirement for housing quality by customers is diversified varied, in order to meet this the effective and systematic quality control for preventing the defects from the stage of building is required. In this study for the effective and systematic quality management for defects of apartment house analysis on the frequencies and loss expenses from defective maintenance regarding examples of apartment houses having been moved in within five years recently, and the survey on their dwellers` consciousness were made, and the table for quantified apartment house defective risk.
A Measure for Improving the Systematic Evaluation of the Life Cycle Cost in Technical Proposal Tendering
Son, Myung-Jin ; Hyun, Chang-Taek ;
Korean Journal of Construction Engineering and Management, volume 13, issue 6, 2012, Pages 71~83
DOI : 10.6106/KJCEM.2012.13.6.071
The use of technical proposal tendering has been expanding recently with the aim of effecting cost reduction, quality enhancement, technological development and value realization centered on multifunctional administrative cities, innovation cities, and the Yongsan relocation project. In line with the increasing interest towards life cycle cost improvement measures as an important evaluation category concerning technical proposal tendering, efforts in preparing measures that can execute the security of credibility and objective evaluation concerning architectural life cycle cost are being made. However, problems such as lack of applicable cases of design development and detail design, distortion of initial construction costs concerning the original plan, combination of constant price and current price, the ambiguity of the calculation standards between tendering corporations, inaccuracy of terms, and insufficient compositional formats concerning life cycle improvement measures are being cited. Accordingly, this study sought to propose a measure to improve the compositional guidelines, format, and standards so that a systematic life cycle cost evaluation can be executed for the reliable distinction of each participating corporation, enhanced credibility and objective evaluation of the life cycle cost improvement measure for technical proposals.
Development of the Retrieval System of Information Flow for a Large-scale and Complex Construction Project using Information Transfer Relationship on Business Process
Shin, Jinho ; Lee, Hyun-Soo ; Park, Moonseo ; Yu, Jung-Ho ;
Korean Journal of Construction Engineering and Management, volume 13, issue 6, 2012, Pages 84~93
DOI : 10.6106/KJCEM.2012.13.6.084
The information generated from large and complex construction projects transfer and evolve in long-term business cycle. Therefore, while there is any problem, such as delay, the cause of the problem might relate to the previous business process rather than where it arises. However, for complex project players and business relationships, it is unsuitable to search an information flow using traditional retrieval methods. This research addresses a relationship-based information search system to analyze the information flow in large-scale and complex construction projects. First, we identified the components of the information retrieval system customizing for a large-scale complex construction projects, and then developed the inference algorithm which define the relationship between business processes. For the validation, we applied the system on a business information system of urban regeneration projects and suggested some application using information flow retrieval system for project players and project managers. Using the system, players are easy to prepare for their work process and managers can define the causal flow of the problem.
Development of Measurement and Evaluation Process for Risk-based Configuration Factors in Mixed Used Development in Urban Regeneration Projects
Son, Myung-Jin ; Hyun, Chang-Taek ;
Korean Journal of Construction Engineering and Management, volume 13, issue 6, 2012, Pages 94~106
DOI : 10.6106/KJCEM.2012.13.6.094
In recent years, the risks and uncertainties associated with mixed used development in urban regeneration projects which have actively been implemented at home and abroad have been on the rise due to the uncertainties of the initial business plan, difficulty of financing, increase in total cost and schedule delay. To cope with rapid social and economic changes and optimize benefits, a risk-based configuration management process that considers life cycle is required, along with accurate planning in the early stage of the business. In addition, it is necessary to prepare measures that can respond to the evaluation and measurement of the configuration factors in relation to the business process. However, the focus of previous studies on configuration management in the field of construction was mainly on humanities and the sociological aspects such as organization, leadership, ideology and similar concepts. There has been limited research on the process and measurement and evaluation methods for configuration factors required in decision-making on the risks and changes that can occur in the actual project implementation phase. Accordingly, in this study, we defined risk-based configuration factors and developed a process and MECA/3DAM/CII methodology to measure and evaluate these factors so as to carry out systematic configuration management of mixed used development in urban regeneration projects.
A Study on the financial condition analysis of domestic construction companies
Kim, Min-Hyung ; Shim, Hyung-Seok ; Jung, Yong-Sik ;
Korean Journal of Construction Engineering and Management, volume 13, issue 6, 2012, Pages 107~120
DOI : 10.6106/KJCEM.2012.13.6.107
This study is conducted so as to understand actual condition of financial difficulties confronted by construction companies in the recession of real estate market which has been continued since the financial crisis started from USA in the second half of 2008, and provide fundamental data for the establishment of policy direction. Compared with this actual condition survey with a 2008 investigation, it seems that the practice of financial institutions or credit evaluation relating parts among sections, which were pointed as problems in such investigation, are resolved to some extent. It seems that there are many causes to aggravate financial conditions as pointed at this time and such causes are related to self-problems, which are inherent to the construction business, such as the smooth settlement of construction payment, the securement of new construction projects, the limitation according to the risk inherent to the construction business, and the industry vision, etc.
Development of Cost Estimate System of Construction Equipment through Analysing Its Domestic Rental Market
Ahn, Bang-Ryul ; Tae, Yong-Ho ; Suh, Sang-Wook ; Huh, Young-Ki ;
Korean Journal of Construction Engineering and Management, volume 13, issue 6, 2012, Pages 121~132
DOI : 10.6106/KJCEM.2012.13.6.121
The current estimation system of construction equipment cost was first introduced in 1960`s when general contractors had ownership of equipment. However, most of construction equipment in construction sites has been rented from equipment leasing company these days. Therefore, the improvement of current cost estimation system is therefore inevitable in order to advance domestic construction industry. This study is aimed to suggest the improved system by analyzing nationwide market rental rates of major construction equipment. A user friendly prototype of actual database grounded on actual market rental rates collected from over 200 leasing companies in the nation was proposed. The database includes various rates and statistics analyzed by different form of contract as well as different region. Using the collected data, "The Cost Estimate System in Construction Equipment Database" was developed by using VBA(Visual Basic for Applications). The system makes users convenient to utilize the rental rates by choosing equipment and region, and various types of contract.
Considerations in the early stage of Designing the Unit Modular Building
Lee, Young-Ho ; Lee, Du-Heon ; Kim, Kyoon-Tai ;
Korean Journal of Construction Engineering and Management, volume 13, issue 6, 2012, Pages 133~142
DOI : 10.6106/KJCEM.2012.13.6.133
With the recent changes in building environments such as low-carbon green growth, there have been increasing demands for the new building system that is eco-friendly and can maximize efficiency such as the unit modular system. For the unit modular system, more than 80% of the whole process is carried out in the factory while in the field, mostly unit module assembling and finish work are done. Thus, the quality at the pre-construction stage when design and manufacturing are done determines the quality of the building as a whole. In the country, the unit modular method was first applied in 2003 to school buildings and has gradually expanded afterwards, but due to the lack of examples and related information as well as the small scale of modular manufacturers, its characteristics have not been sufficiently reflected in design, manufacturing and field constructions. This study, as an attempt to improve the design quality of unit modular buildings, points to the problem in manufacturing and field construction, compares and analyzes its causes, and suggests major points to be considered in the early stage of designing the unit modular buildings.
Development of Rule-Set Definition for Architectural Design Code Checking based on BIM - for Act on the Promotion and Guarantee of Access for the Disabled, the Aged, and Pregnant Women to Facilities and Information -
Kim, Yuri ; Lee, Sang-Hya ; Park, Sang-Hyuk ;
Korean Journal of Construction Engineering and Management, volume 13, issue 6, 2012, Pages 143~152
DOI : 10.6106/KJCEM.2012.13.6.143
As the Public Procurement Service announced the compulsory of BIM adaption in every public construction from 2016, the importance of BIM is increasing. Besides, automatic code checking takes significance in terms of the quality control for BIM based design. In this study, rule-sets were defined for Act on the Promotion and Guarantee of Access for the Disabled, the Aged, and Pregnant Women to Facilities and Information. Three analytic steps were suggested to shortlist the objective clauses from the entire code; the frequency analysis using project reviews for architectural code compliance, the clause analysis on quantifiability, and the analysis for model checking possibilities. The shortlisted clauses were transformed into the machine readable rule-set definition. A case study was conducted to verify the adaptiveness and consistency of rule-set definitions. In future study, it is required the methodologies of selecting objective clauses to be specified and its indicators to be quantified. Also case studies should be performed to determine the pre-conditions in modeling and to check interoperability issues and other possible errors in models.
System Dynamics Modeling of Korean Lease Contract Chonsei
Park, MoonSeo ; Moon, Myung-Gi ; Lee, Hyun-Soo ; Hwang, Sungjoo ; Lee, Jeoung-Hoon ;
Korean Journal of Construction Engineering and Management, volume 13, issue 6, 2012, Pages 153~164
DOI : 10.6106/KJCEM.2012.13.6.153
Since the sub-prime mortgage crisis from the US in 2008, Korean housing market has plummeted. However, Korean local lease contract, Chonsei, price has been increasing. This increase of Chonsei price can be a threat to the low-income people because most of them prefer to live at the house with a Chonsei contract. In order to solve this problem, the Korean Government implemented several Chonsei policies to secure low-incomers` residence by decreasing the price of Chonsei; however, due to the lack of understanding on housing and Chonsei market, Korean government policy seemed to fail on getting effective results. In the housing and Chonsei market, there are many stakeholders with their own interest, hence, simple thoughts about housing and Chonsei market, such as more house supply will decrease house price, would not work in a real complex housing market. In this research, we suggests system dynamics conceptual model which consists of causal-loop-diagrams for the Chonsei market as well as the housing market. In addition, we tries to explain why the policy did not work effectively using the examples from the government`s past measures. In results, Chonsei price has its own homeostasis characteristic and different price movement with housing price in the short and long term period. Unless government does not have a structural causation mind in implementing policies in the real estate market, the government may not attain intended effectiveness on both markets.