• Title/Summary/Keyword: Construction

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Impact Analysis of Construction Delay: The Case of Defects In the Top-down Construction Method

  • Suk, Janghwan;Kwon, Woobin;Soe, Jang-woo;Cho, Hunhee
    • International conference on construction engineering and project management
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    • 2022.06a
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    • pp.213-221
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    • 2022
  • Defects are the risk factors in the construction process of buildings. They cause damage, delaying the construction duration. They especially cause adverse effects on the top-down construction method. This study analyzed the degree of construction delay induced by each work type, focusing on defects in the top-down method. Then, we derived construction delay induction coefficient from different work types in order by using the severity of construction delay per defect and the occurrence probability of defect; this assessment model measures the impact of defects on construction delay for each work type. Furthermore, by comparing each work type based on the defect frequency and the construction delay induction coefficient, we found work types that need to be administered attentively. We identified that plastering work was easy to overlook, requiring caution in defect management. This study provides an efficient defect management system suitable for the buildings that are built using the top-down construction method.

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Derivation of the Construction Process for Precast Concrete System based on Off-Site Construction (OSC(Off-Site Construction)기반 PC공법의 시공 프로세스 도출)

  • Jun, Young-Hun;Bae, Byung-Yun;Yun, Won-Gun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2021.05a
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    • pp.289-290
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    • 2021
  • The PC system has advantages in terms of project management, such as shortening the construction period and reducing costs. However, it is difficult to activate the technology due to insufficient application of the technology. Therefore, there is a need for a strategy to expand and activate the PC system. This study is a basic research for PC construction project management, and its purpose is to derive the entire construction process from factory production of PC components to on-site construction. In this study, the construction process of the PC system was derived through literature review, and the main matters for the construction process management of PC system were confirmed in the analysis process. In the future, the results of this study are expected to be used as basic data for research for PC project management, such as deriving construction classification and calculating construction periods.

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A Study on Advanced Analysis of Construction Project Performance Evaluation (건설사업 수행성과평가에 대한 분석 고도화 연구)

  • Kim, Kyong hoon
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2023.05a
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    • pp.329-330
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    • 2023
  • The performance of the construction project is to be evaluated within 60 days of completion, according to relevant laws. It evaluates cost, construction period, design change, re-construction, safety, etc. for each project stage. And the project owners are inputting the evaluation results of the construction work into the construction project information system(CALS). The post-evaluation result information entered in this way can be referred to in the basic design of the construction project by referring to the related contents if there is a similar construction in the future. And It can also be used to predict and respond to the required period and cost by analyzing the accumulated data. In this study, in order to provide reference data that can be used in similar projects in the future, the latest analysis methods are reviewed and the possibility of future application is considered. Accordingly, this study intends to focus on the construction cost part among the indicators such as construction cost, construction period, design change, and re-construction that are currently being dealt with in post evaluation.

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Standardization for Post-Construction Evaluation Report (건설공사 사후평가결과보고서 표준화 방안)

  • Kim, Kyong hoon;Lee, Chankyu
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2023.05a
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    • pp.289-290
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    • 2023
  • According to relevant laws, in the case of a construction project with a total construction cost of 30 billion won or more, a post-construction evaluation must be performed after completion. In addition, a post-construction evaluation report must be prepared and entered into the Continuous Acquisition & Life-cycle Support(CALS). As a result of reviewing the currently accumulated post-construction evaluation reports, since the report is not standardized, it is difficult for public project owners to write the report. It also hinders the post-construction evaluation and management center from verifying contents, analyzing data, and deriving meaningful results. In order to improve the convenience of the public owners who must conduct post-construction evaluations and the work efficiency of the center, evaluation factors were standardized and a standard post-construction evaluation report format for road construction was developed in Excel. Through this, the data in the reports will be effectively accumulated, managed, and analyzed, so that meaningful results will be produced and be helpful in future construction work.

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Integration of Construction Inspection to Schedule Management (공정관리와 연계한 건설 검측 업무 체계화 방안)

  • Song, Bohyeon;Jeong, Seunghwan;Lee, Jin Gang;Choi, Jaehyun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2023.05a
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    • pp.161-162
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    • 2023
  • The construction inspection is conducted by the contractor or construction supervisor after a certain stage of work has been completed. As the consturction inspection task is dependant on construction schedule, however, it is difficult to plan inspection task systematically, resulting in increased supervision costs, delays in construction, and disputes. Therefore, this study aims to integrate inspection work with schedule management to systematize inspection procedures. Firstly, the inspection work is defined based on the construction supervision checklist. Then its relationship with the construction process, required time, and resources for inspection tasks are defined in construction schedule. Lastly, a process management program is used to assess the effects of applying the inspection work and examine changes in the overall construction period and process management. The proposed method in this study can support to plan construction inspection more systematically and to improve the effectiveness of construction quality management.

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A Study on Cost Standards for Securing Appropriate Construction Costs for Small-Scale Construction Sites (소규모 시공현장 적정공사비 확보를 위한 원가기준 마련 연구)

  • Oh, Jae-Hoon;An, Bang-Yul
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2023.05a
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    • pp.347-348
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    • 2023
  • In construction sites, small-scale construction quantities or limited work hours below the daily work volume may occur due to on-site conditions. For small-scale quantities, the input of equipment and labor is designed based on an hourly basis in the invoice, resulting in a difference from the actual cost. In this study, we aim to explore solutions from the perspective of construction cost standards to secure appropriate construction costs for small-scale and time-limited construction sites. Firstly, to preserve the basic construction costs on-site, we established standards where half the cost would be charged for construction quantities below four hours and a full day's cost would be designed for construction quantities between four to eight hours. Additionally, realistic construction cost calculation standards are expected to be provided by realizing a surcharge rate for work hour limitations to secure appropriate construction costs.

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Electronic Supervision System of Construction Facility by Construction IT (정보화에 의한 시설공사 감리업무 전자화방안)

  • Kang Leen-Seok;Moon Hyoun-Seok;Park Seo-Young;Lee Yang-Kyu
    • Proceedings of the KSR Conference
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    • 2005.11a
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    • pp.1143-1148
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    • 2005
  • Recently, the application of construction IT (Information Technology) is recognized as an essential tool for the effective construction management and construction CALS. And the large construction projects are already using PMIS tool, and the application of construction IT tool will be accelerated by rapid popularization of computerized construction management system. This study defines a concept of construction IT and suggests an improved method to apply construction IT tool for construction supervision system.

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Research on eco-friendly construction management plan for construction site through waste fiber resource recycling technology (폐섬유 자원재활용 기술을 통한 건설현장 친환경 시공관리 방안에 관한 연구)

  • Kim, Dae-Geon
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2022.11a
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    • pp.45-46
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    • 2022
  • Recently, it is necessary to establish an eco-friendly construction system through recycling of waste material management at construction sites. This is required to reflect the times that require a carbon reduction system in construction as part of domestic and overseas carbon dioxide reduction. Therefore, we intend to establish eco-friendly construction management as part of resource recycling and carbon reduction through recycling technology for waste fibers generated at construction sites.

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Analysis of the Changes in the Perceived Important Capabilities of Construction Project Managers after the Global Financial Crisis

  • Lee, Na-Kyung;Bae, Ju-Lee;Jang, Hyoun-Seung
    • Journal of Construction Engineering and Project Management
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    • v.2 no.3
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    • pp.8-16
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    • 2012
  • After the 2008 global financial crisis, the construction environment in South Korea continued change in the construction environment. Construction orders in 2011 have shown a downward trend compared with the previous year. Along with these changes in the construction market, the professional capabilities of construction project managers that are perceived as important also changed after the global financial crisis. Accordingly, this study was conducted to identify the major business capabilities of the current construction project managers and to determine which of these capabilities have undergone changes in terms of the importance accorded to them after the global financial crisis, and ultimately, to derive the construction project manager capability areas that need to be strengthened according to the changes in the construction environment. The capabilities of construction project managers were surveyed at two different time points: in 2007 and in 2010. The results show that the year 2010, after the global financial crisis, an increase in the perceived important capabilities of construction project managers compared with 2007. This results the impact of the changes in the construction environment on the importance of construction project managers. This study derived the ramifications of the early identification of systems and prospects according to the changes in the construction circumstances on more efficient onsite and human resources management, by considering the appropriate capabilities of the construction project managers.