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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
Editor in Chief :
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
OLAP and Decision Tree Analysis of Productivity Affected by Construction Duration Impact Factors
Ryu, Han-Guk ;
Journal of the Korea Institute of Building Construction, volume 11, issue 2, 2011, Pages 100~107
DOI : 10.5345/JKIC.2011.04.2.100
As construction duration significantly influences the performance and the success of construction projects, it is necessary to appropriately manage the impact factors affecting construction duration. Recently, interest in the construction industry has been rising due to the recent change in the construction legal system, and the competition among the construction companies on construction time. However, the impact factors are extremely diverse. The existing productivity data on impact factors is not sufficient to properly identify the impact factor and measure the productivity from various perspectives, such as subcontractor, time, crew, work and so on. In this respect, a multidimensional analysis by a data warehouse is very helpful in order to view the manner in which productivity is affected by impact factors from various perspectives. Therefore, this research proposes a method that effectively takes the diverse productivity data of impact factors, and generates a multidimensional analysis. Decision tree analysis, a data mining technique, is also applied in this research in order to supply construction managers with appropriate productivity data on impact factors during the construction management process.
Improvement of Construction Manager Selection Method
Park, Yong-Woo ; Lim, Nam-Gi ;
Journal of the Korea Institute of Building Construction, volume 11, issue 2, 2011, Pages 108~115
DOI : 10.5345/JKIC.2011.04.2.108
This study investigates the construction management selection methods for fair competition within the construction management market by analyzing the current status of domestic construction management, the 2010 publication on the status of construction management, and the construction management evaluation criteria. Also, the 2009 publication of top CM service establishments, the average proportion of tender for 120 CM services from 2002 to 2010, and six assessment results which are open to the parties directly involved were statistically analyzed to review the adequacy of the evaluation criteria. This analysis shows that the evaluation criteria for the CM service impedes the development of the construction management industry and companies, since the criteria are decided by the service payment, and the technical skills assessed by technical proposals have no ties with contract prices. Therefore, this study proposes an improvement of the selection methods in accordance with the project characteristics and the technical requirements. However, more research is still needed to derive a detailed classification method of the technical requirement, the owner's evaluation criteria selection, and the preparation of an institutional foundation for the construction manager's post-evaluation.
Photovoltaic Application in System Formwork Operations of High-rise Building Construction
Kim, Tae-Hoon ; Lee, Myung-Do ; Lee, Ung-Kyun ; Cho, Hun-Hee ; Kang, Kyung-In ;
Journal of the Korea Institute of Building Construction, volume 11, issue 2, 2011, Pages 116~126
DOI : 10.5345/JKIC.2011.04.2.116
Recently, eco-friendly energy has been employed in diverse fields of industry in order to reduce environmental pollution and secure a new growth engine. In particular, practical applications of photovoltaic energy, such as building integrated photovoltaic systems, have been implemented to the construction industry based on the extensive interest in photovoltaic power as an unlimited and sustainable energy. While the construction of a high-rise building requires large amounts of energy, methods of reducing energy consumption in the construction phase have rarely been studied. Based on this motivation, the research proposes a photovoltaic based formwork system (PVFS), and then performs a design and feasibility analysis for its application to the construction of a high-rise building. Using a case study, the research implements various analyses, including area, position, and total allowable weight required by PVFS, and evaluates the influences of PVFS on the construction processes, as well as its economic feasibility. The proposed PVFS can be adopted to a real-world project in the near future, depending on the advancement of technology and economic feasibility. The results of this research will contribute to establishing a construction environment that promotes a reduction of energy consumption by using eco-friendly energy in the construction phase.
Engineering Properties of Cement Composite Panel for Outer Wall Depending on the Types and Combinations of Insulation Materials
Han, Min-Cheol ; Cho, Byoung-Young ; Lee, Gun-Cheol ; Noh, Sang-Kyun ; Jeon, Kyu-Nam ;
Journal of the Korea Institute of Building Construction, volume 11, issue 2, 2011, Pages 127~135
DOI : 10.5345/JKIC.2011.04.2.127
In this study, the engineering characteristics of outer wall insulation panels according to type of insulation materials, their combination, and the contents of insulation materials were tested. Vermiculate, ceramic bead, perlite and expanded polystyrene were used as insulation materials. Flexural strength and thermal conductivity depending on the insulation materials used were measured. It was found that the flow of fresh mortar significantly decreased with an increase in the contents of insulation materials. In terms of the effect of insulation materials on thermal conductivity, an increase in insulation materials resulted in a decrease of thermal conductivity. In particular, PL and EPS, when used together, have lower thermal conductivity than other materials. Regarding the flexural strength of the hardened mortar, the strength showed a tendency to gradually decrease according to the increase in contents of insulation materials, compared to that of the plain mortar. In terms of the flexural strength depending on various types of insulation materials and its combination, it was found that the flexural strength of cement mortar containing 3% of vermiculate(V)+ceramic bead(CB)+perlite(PL) was the highest among the specimens tested.
Quantified Evaluation on the Qualitative Criteria for the Selection of Appropriate Concrete Slab Form-works for Residential Buildings
Lee, Kyung-Suk ; Lee, Tae-Hee ; Shin, Young-Keun ; Kim, Tae-Hyung ; Han, Seung-Woo ;
Journal of the Korea Institute of Building Construction, volume 11, issue 2, 2011, Pages 136~144
DOI : 10.5345/JKIC.2011.04.2.136
The form-work operation of concrete structures is a major element determining the period and cost of construction projects. However, the selection of the appropriate form-work system is dependent on the experience of the site personnel only. In this paper, existing methods (Aluminum form, Sky deck) and new slab form-work methods (AFB: Aluminum panel Form with dropping Beam) were selected. Each method was estimated by means of Delphi techniques based on the qualitative analysis data. This paper suggests an evaluation methodology of slab form-work application in construction sites by calculating qualitative evaluation scores. The methodology finding quantified scores of qualitative criteria can be available to be applied to other construction operation evaluation methods.
Construction EC Strategy Model and Improving Fields for Global EC Transition
Jang, Hyoun-Seung ; Ock, Jong-Ho ; Koo, Bon-Sang ;
Journal of the Korea Institute of Building Construction, volume 11, issue 2, 2011, Pages 145~153
DOI : 10.5345/JKIC.2011.04.2.145
Since the early 1990s, Korean construction companies have strived to evolve into global Engineering Construction (EC) companies. However, such efforts have been unsuccessful, partly due to a lack of clear objectives and a misunderstanding of the direction that needed to be taken for such a change. A better understanding is required with respect to the need to transform into an EC company in the context of the rapidly changing global construction environment. This research investigates major EC companies from around the world, and assesses the status of domestic companies' efforts for EC transition. The results of these investigations revealed that domestic firms need to better prioritize their strengths for different markets, i.e., decide whether to implement directly, outsource or limit to process management. In addition, the investigations showed that the global market is shifting from monolithic projects to more complex projects. Such projects require firms with the ability to develop and implement high front-end investment strategies, planning capabilities, and pre-design management skills. Accordingly, we recommend that firms differentiate themselves by developing such a skill set required for specific products.
Relationship between Customer Satisfaction with Service Quality and Repurchase Intention for Apartment Houses
Park, Gyu-Tae ; Kim, Jin-Dong ; Seo, Deuk-Seok ; Kim, Gwang-Hee ;
Journal of the Korea Institute of Building Construction, volume 11, issue 2, 2011, Pages 154~161
DOI : 10.5345/JKIC.2011.04.2.154
In increasingly competitive market conditions, domestic construction companies are struggling to secure a competitive edge by increasing consumer satisfaction. In these circumstances, a greater emphasis needs to be put on providing an upgraded level of quality in the area of addressing defects to the satisfaction of customers, which is considered to have a great impact on customer satisfaction. This empirical study of the relationships among service quality, customer satisfaction, and repurchase intention aims to provide basis data for increasing service quality, particularly in dealing with the defect issues facing construction companies. To this end, a literature review was carried out on the concept of service quality along with defect issues, and customer satisfaction and influential factors were identified. Building on these foundations and findings, a survey was administered to residents in housing dwellings such as apartments. The results of this study are expected to heighten awareness of the need for increased service quality, which may have a critical influence on customer satisfaction and repurchase intention, and will thereby contribute to enhancing competitiveness and other aspects of the current construction industry.
Flame Resistance and Durability of Compressed Structural Wood through Microwave Heat Drying Method
Lim, Nam-Gi ;
Journal of the Korea Institute of Building Construction, volume 11, issue 2, 2011, Pages 162~170
DOI : 10.5345/JKIC.2011.04.2.162
As the result of implementing a treated material test and durability test after quickly drying S.P.F. species, a type of softwood structural material, within a short period time, soaking it in liquid phosphate flame proof agent for an hour, microwave heating it, and compressing it from 3.8cm to 1cm, when setting the appropriate heating time of microwave heating at 7 minutes at 5kW, it is observed that it satisfies the target water content (4~5%). It is shown that in a water content measurement of the wood that is compressed after being softened by soaking in the flame proof agent, drying and heating at 3kW for 9 minutes, all specimens satisfied 12~14%, the appropriate water content for exterior wood. Also, it is shown that in terms of the flame performance obtained through a flame resistance treatment of the compressed wood and a treated material test, the specimen soaked in flame proof agent for 30 minutes was the most excellent, and that the performance test result of the compressed wood in all areas, such as nail withdrawal resistance, compression, bending strength, and shearing strength, were all improved in their mechanical features to twice to three times better performances.
Introduction of BIM Quality Standard for Quantity Take-off
Kwon, O-Cheol ; Jo, Chan-Won ; Cho, Joo-Won ;
Journal of the Korea Institute of Building Construction, volume 11, issue 2, 2011, Pages 171~180
DOI : 10.5345/JKIC.2011.04.2.171
As high-rise and irregularly shaped building structures have become a trend at home and abroad, BIM technology is now being developed and accepted widely. However, the BIM data and information generated in the design phase cannot be actively reutilized in the construction stage. This is because the major interests of construction companies include working process and cost estimation, while there is not usually enough BIM data created to support these activities. In order to resolve this issue, we need to set up BIM modeling guides that make it possible to extract correct quantity take-off from BIM data. Quality checks are also necessary to ensure that the resulting BIM data is correct. This study suggests ways of securing BIM quality for correct quantity take-off, which is critical for BIM technology applied to the building construction process and its cost estimation.
Fireproof Performance of Mortar using Gypsum in Simplified Heating Test
Kang, Suk-Pyo ;
Journal of the Korea Institute of Building Construction, volume 11, issue 2, 2011, Pages 181~188
DOI : 10.5345/JKIC.2011.04.2.181
Spalling must be considered when designing high-strength concrete to cope with fire. This study investigates the temperature rise of steel bar in high-strength concrete coated with fireproof mortar using gypsum exposed to fire. It was found that fireproof mortar using gypsum is more effective in constraining the temperature rise of steel bar in the high strength concrete than fireproof mortar using cement, and that the thinner the cover depth of the fireproof mortar, the more significant the influence of the gypsum. In addition, while there was no difference between
-hemihydrate mortar and
-hemihydrate mortar on the temperature rise of steel bar, the compressive strength of
-hemihydrate mortar is higher than that of
Performance Evaluation System for Construction Environment of the Unified Waterproofing-Root Resistance Membrane layer of the Green Roof System
Park, Chang-Hwa ; Oh, Sang-Keun ; Lim, Nam-Gi ;
Journal of the Korea Institute of Building Construction, volume 11, issue 2, 2011, Pages 189~199
DOI : 10.5345/JKIC.2011.04.2.189
Installation of a proper root barrier in a green roof system is very important in order to protect the concrete slab of roof and the root penetration in the waterproofing layer. To select the proper root barrier materials and methods, it is necessary to understand the environmental conditions affecting the waterproofing-root barrier system in green roof construction site. Therefore, we suggested as the environmental performance indexes four kinds of performance requirements; root penetration, chemical attack by chemical agent or fertilizer, load impact by soil depth and size of plant, and water pressure. The related four test methods were suggested for the inspection of these performance indexes. In this research, we could suggest for kinds of test methods as standard test methods to evaluate the environmental performance of waterproofing-root barrier for greening roof system.
A Benchmarking Tool to Assess the Role of the Construction Manager in terms of Project Teamwork Supports
Kim, Chan-Kyu ;
Journal of the Korea Institute of Building Construction, volume 11, issue 2, 2011, Pages 200~207
DOI : 10.5345/JKIC.2011.04.2.200
Construction management services have been adopted for more than a decade and are continuously growing; however, the advantages of utilizing a construction management service are still not quite clear, regardless of many arguments can be made in their favor. The construction manager, as a coordinator, is supposed to smoothly facilitate the project teamwork in order to deliver a profitable and satisfactory project, not only for the owner's interests but also for the success of all project participants. This study has focused on the teamwork supports a construction manager can provide during project operations. This study developed a benchmarking tool to assess the construction manager's role in terms of its project teamwork supports, by utilizing the evaluation model and several case studies. In addition, this study also attempted to set the industry average and higher performance so that both the owner and the construction manager can self-assess, and more importantly, can improve project operation. The actual implementation of the benchmarking tool into on-going projects can allow the construction manager to understand the current operation and to make a better project process through teamwork.