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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korea Institute of Building Construction
Journal Basic Information
Journal DOI :
The Korean Institute of Building Construction
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Volume & Issues
Volume 11, Issue 6 - Dec 2011
Volume 11, Issue 5 - Oct 2011
Volume 11, Issue 4 - Aug 2011
Volume 11, Issue 3 - Jun 2011
Volume 11, Issue 2 - Apr 2011
Volume 11, Issue 1 - Feb 2011
Selecting the target year
A Preliminary Research for Developing System Prototype Generating Linear Schedule
Ryu, Han-Guk ;
Journal of the Korea Institute of Building Construction, volume 11, issue 1, 2011, Pages 1~8
DOI : 10.5345/JKIC.2011.02.1.001
Linear scheduling method limits to present works of work breakdown structure as a form of lines and was often developed manually. In other words, linear schedule could not utilize activity, work breakdown structure, and etc. information of network schedule such as CPM(Critical Path Method) and has been used only for reporting or confirming construction master plan. Therefore, it is necessary to develop system which can automatically generating the linear schedule based on the network schedule having many accumulated and useful construction schedule information. Thus, this research has an effort to establish data process model, data flow diagram, and data model in order to make linear schedule. In addition, this research addresses the system solution structure, user interface class diagram and logic diagram, and data type schema. The results of this paper can be used as a preliminary research for developing linear schedule generating system prototype by utilizing the network schedule information.
Case Studies: Schedule Delay Factors and Delay Prevention Program for Concrete Frame Works in Apartment Construction Project
Cho, Tae-Jea ; Choi, Jong-Soo ;
Journal of the Korea Institute of Building Construction, volume 11, issue 1, 2011, Pages 9~17
DOI : 10.5345/JKIC.2011.02.1.009
Project delay is one of the most crucial impact factors in the construction process from a schedule and cost management perspective. This study focused on analyzing the causes of concrete frame work delay in the apartment construction project. According to the analysis of project cost composition, the direct cost of concrete works was highest in most samples. Actual delays of concrete works were analyzed for the six different construction components. Causes of delay were grouped into two categories; preconstruction and construction phases and these two groups were further divided into sub-groups. Analysis results revealed that the most significant delay was occurred in the 1st. floor concrete skeleton work. For each delay factor, implications of delay as well as suggestion(s) for reducing the possibility of schedule delay are provided.
The Survey for Successful Operation of the BTL Projects
Ahn, Yong-Sun ; Shim, Un-Jun ; Jang, Gang-Hun ;
Journal of the Korea Institute of Building Construction, volume 11, issue 1, 2011, Pages 19~27
DOI : 10.5345/JKIC.2011.02.1.019
The capital of investment of SOC projects is too large to be taken charge of a country. The government introduces the private investment like a BTL project because of the limited national resources. However, even the company which wants order constructions, do not consider the fundamentals such as accurate estimation, capability of construction company and construction period. The purpose of the research is to suggest the basic influential factors for obtaining a BTL project and offers the concludes for the successful operation after the contract. The result of the research is followed. 54 effect successful factors are compressed into 11 principle factors by analysis on those 54 factors, CSFs of BTL business are constructed. Regression analysis is induced by variable of primary success factors and success degree, and derives the influence degree of effect successful factors in business. Regression analysis that is mentioned above showed considerable issues from importance of primary factors, prime cost fluctuation factors and comparison of management-level. So this study could suggest the effective operate plan of BTL business.
Relationship of Test Methods of Impact Absorbing Effect of Floors from a viewpoint of Safety in Accidental Collisions
Kim, Sang-Heon ; Ji, Suk-Won ; Yoon, Jung-Sik ; Choi, Soo-Kyug ; Seo, Chee-Ho ;
Journal of the Korea Institute of Building Construction, volume 11, issue 1, 2011, Pages 29~34
DOI : 10.5345/JKIC.2011.02.1.029
Since the study of building performance design was first undertaken by Building Research Station in 1930s, the results of such study has been reported from many parts of the world, building construction codes and standards have been revised based on performance in advanced nations as well in Korea, and various performance certification systems are in operation. The purpose of this study is to build a database of performance certification systems to investigate the co-relationship of various test methods related to the same test items. As test methods for case study, we selected test methods involving collision of the human body. Through analysis of Critical fall height test of EN 1177 and Head Model test of JIS A 6519 about 8 species of floor test-bodies, it was found that there are limits of application in terms of the depth and strength of cushion. Furthermore, although the measured physical parameters are the same, when the co-relationship between test methods is uncertain, the various physical parameters may not be compatible with the results.
The Management Evaluation Key Performance Indicators of Korean Construction Firms
Lee, Dong-Hoon ; Kim, Seon-Hyung ; Kwon, Gi-Deoc ; Kim, Man-Ki ; Kim, Sun-Kuk ;
Journal of the Korea Institute of Building Construction, volume 11, issue 1, 2011, Pages 35~44
DOI : 10.5345/JKIC.2011.02.1.035
Business performance measurement is used as an important tool to evaluate management performance, control human resources, and implement strategies. It can be measured simply in terms of finance including net profit, return on investment, and return on equity, but this is not sufficient because the performance outside of finance such as internal business process and informatization cannot be examined. Therefore this study defined a KPI(Key Performance Indicators) applicable to local construction companies ranked in the top 30 in construction capability, and also introduced differentiated results from the earlier studies by reflecting more realistic corporate management based on the existing studies and interviews with business experts.
Selecting Key Accident Risk Factors in Building Construction Projects
An, Sung-Hoon ; Ryu, Ho-Won ; Park, Mi-Song ;
Journal of the Korea Institute of Building Construction, volume 11, issue 1, 2011, Pages 45~50
DOI : 10.5345/JKIC.2011.02.1.045
Building construction projects have various risk factors, so accidents is easily occurred in construction field. Therefore, many studies have been carried out to find methods for reducing such accidents. However, most of these studies have been focused to engineering factors, such as working methods and safety guards and equipments. The purpose of this study is to select the key accident risk factors in building construction projects. For this study, we identified the accident risk factors, which include engineering, education, and enforcement factors, and quantitatively evaluated these factors using an analytic hierarchical process. Identifying the key accident risk factors will help to reduce accidents in building construction projects.
Technical Index for the Maintenance of Watertightness of the Roof of a Large-Span Membrane Structure
Oh, Sang-Keun ; Kim, Dong-Bum ; Lee, Sun-Gyu ;
Journal of the Korea Institute of Building Construction, volume 11, issue 1, 2011, Pages 51~59
DOI : 10.5345/JKIC.2011.02.1.051
With the increased demand for membrane structures in recent years, there have been many studies of their mechanical properties, to the extent that such structures have become recognized as independent structures with a level of safety and durability comparable to those of other general structures. But in reality, the study for the maintenance of membrane structures has not been as active. In particularly, the study of watertightness from the perspective of maintenance has been very limited. Accordingly, a study on securing watertightness performance and the guidelines for maintenance is necessary. In this study, through a case study of water leakage accidents in membrane structures overseas, causes of leakage were selected from the membrane material itself, joint parts and open door of roof part in membrane structure. The water leakage and deterioration elements were analyzed from those leakage causes. The degree of importance of the water leakage and deterioration index was also designated using the AHP (Analytic Hierarchy Process) method. As a result, the basic technical index was suggested for the maintenance of the roofs of large-span membrane structures to prevent water leakage. This index will be used to make a guideline for the long-term maintenance of the roofs of large-span membrane structures.
Key Performance Indicators of Building Project
Choi, Jae-Hwi ; Sohn, Hyo-Won ; Kim, Sun-Kuk ;
Journal of the Korea Institute of Building Construction, volume 11, issue 1, 2011, Pages 61~72
DOI : 10.5345/JKIC.2011.02.1.061
Management performance of a construction company can be the sum of management performance of each different project. Therefore, the measurement of management performance following construction projects is essential for securing the competitiveness of a company. However, most research has been related to the performance measurement of the construction industry and companies and little has been conducted on individual project`s performance. In particular, building projects have various characteristics depending on construction orderer, type and commissioning entity but no performance indicators have been selected based on this classification. This study aims to select performance indicators for subdivided areas based on project characteristics as well as those which can be commonly used to measure management performance at construction and trial run stages of building projects. In the future, those indicators proposed in this study can be used for developing methodology to evaluate them and later applied to actual building projects to generate quantitative data. In addition, they are expected to be used as reference for selecting indicators to measure management performance of plant and civil engineering projects.
Analysis of Delay Factors Based on Importance of Construction Subject-classified in Apartment Finishing Works
Lee, Seung-Hoon ; Kim, Yong-Man ; Kim, Ju-Hyung ; Kim, Jae-Junn ;
Journal of the Korea Institute of Building Construction, volume 11, issue 1, 2011, Pages 73~81
DOI : 10.5345/JKIC.2011.02.1.073
The ultimate goal of construction is to complete the given work in the most economical and safest way within the required construction period while meeting the quality standards specified in the design drawing. There are a few characteristics of finish work. First, executed in subdivided processes, finish work involves a very diverse and complex structure. Second, there are no criteria for each segmented process with regard to the appropriate time of input. Third, it is not very necessary to set priorities for lead and lag works. This study intends to provide information on the completion of a project in accordance with the required duration by setting priorities in the delay of each detailed process of finish work to minimize delay in finish work. In this study, finish work is divided into wet work and other types of finish work, and the importance of each process is classified based on the given details of each process. In addition, the study employs a survey to analyze delay factors of a designer, a constructor, and a supplier. Using the survey results, the study sets priorities in delay of final work to provide information on the completion of an apartment project within the planned construction period.
Premature Stiffening of Cement Paste Associated with AFm Formation
Chung, Chul-Woo ; Lee, Jae-Yong ;
Journal of the Korea Institute of Building Construction, volume 11, issue 1, 2011, Pages 83~90
DOI : 10.5345/JKIC.2011.02.1.083
The purpose of this research is to investigate the effect of AFm formation on the stiffening process of cement paste. High and low alkali sulfate clinkers were used for the experiments. The flow and stiffening behavior of cement paste was investigated using modified ASTM C403 penetration resistance test and oscillatory shear rheology. X-ray powder diffraction (XRD) was used for phase identification associated with stiffening of the paste. It was found from the results that low alkali clinker mixture produced very strong premature stiffening whereas high alkali clinker mixture did not cause premature stiffening. This is because of the large amount of alkali sulfate present in the clinker. Addition of calcium and sodium chloride to the high alkali clinker mixture caused faster stiffening and set.
Bayesian Model for Cost Estimation of Construction Projects
Kim, Sang-Yon ;
Journal of the Korea Institute of Building Construction, volume 11, issue 1, 2011, Pages 91~99
DOI : 10.5345/JKIC.2011.02.1.091
Bayesian network is a form of probabilistic graphical model. It incorporates human reasoning to deal with sparse data availability and to determine the probabilities of uncertain cases. In this research, bayesian network is adopted to model the problem of construction project cost. General information, time, cost, and material, the four main factors dominating the characteristic of construction costs, are incorporated into the model. This research presents verify a model that were conducted to illustrate the functionality and application of a decision support system for predicting the costs. The Markov Chain Monte Carlo (MCMC) method is applied to estimate parameter distributions. Furthermore, it is shown that not all the parameters are normally distributed. In addition, cost estimates based on the Gibbs output is performed. It can enhance the decision the decision-making process.