• Title/Summary/Keyword: 공사 프로세스

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The construction project's risk threshold calculation methodology applying a concept of VaR (VaR개념을 응용한 건설공사 위험허용도 산정방법)

  • Kim Seon-Gyoo;Kim Jae-Jun;Kim Kyung-Rai
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • autumn
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    • pp.65-72
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    • 2001
  • With the recent rising project complexities and competitive environments in the construction projects, a risk management is recognized as more important management tool than the others. However, as most risk management techniques applied to the construction projects are centered around their initial phases and risk analyses, they are not developed into general project management technique such as time management, cost management and quality management, etc., that are usually applied in the process of construction. Thus, this paper proposes a response process to construction project risks based on the risk threshold and its calculation methodology applying a concept of VaR to establish risk management as general management technique in the construction projects.

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Framework of Owner-driven Lean Construction for Plant Construction (발주자 주도형 린 건설에 대한 기초 연구;플랜트 건설공사를 중심으로)

  • Ryu, Chung-Kyu;Han, Seung-Heon;Park, Jung-Jun
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2007.11a
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    • pp.647-651
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    • 2007
  • The Lean Construction is adopted from Lean Principle of Manufacturing Industry in the early of 1990, that has been providing theoretical background and good practical implementation for maximizing customers' satisfaction and improving productivity through minimizing the waste factors in the construction operations. The Last Planner System(LPS), one of the elementary techniques of Lean Construction, aims for improving the work reliability and reducing variability by measuring and managing the daily or weekly performance for overcoming the weakness of recent complex schedule management tools such as Critical Path Method. This research is propose a framework for implementation of LPS conducted by owner in plant construction.

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A Study on the Establishment of Safety Management Strategies for Public Enterprises for the Urban Development (도시공사 유형의 공기업 안전관리 전략수립에 대한 연구)

  • Jieun Son;Younggeun Yoon;Jaeyun Lee;Taekeun Oh
    • The Journal of the Convergence on Culture Technology
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    • v.9 no.4
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    • pp.467-472
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    • 2023
  • Public enterprises for urban development, whose main tasks are housing and land development and building maintenance, have various disaster and safety management responsibilities, and their importance is increasing with the recent full-scale revision of related laws, so it became necessary to establish a management strategy. In this study, by the AHP analyses, we intend to present a reasonable process and results for deriving promotion strategies and tasks and establishing disaster safety management operation goals, emphasizing on the safety management system and ICT-based safety technology

Case Study and Standard Process Analysis of Change Order in Design for Road Tunnel Project (터널공사 사례분석에 의한 설계변경 표준프로세스 구성방안)

  • Kang Leen-Seok;Kim Dong-Kwang;Jung Won-Myoung;Lee Seung-Ryul;Kim Hyun-Soo
    • Proceedings of the KSR Conference
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    • 2005.11a
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    • pp.1149-1152
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    • 2005
  • Recently, tunnel structure is being widely used in railway or roadway construction projects because earthwork causes large cutting and damages in environmental factors. However, there are many changes of design by different items comparing with design phase in tunnel structure by uncertain drawings. This study develops a standard process for the change of design to reduce change orders in construction phase.

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A Basic Study on the Improvement of PC Project Management System Process (PC 공사 프로젝트 관리 시스템 프로세스 개선을 위한 기초연구)

  • Kim, Chang-Hun;Ahn, Yong-Han
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2023.11a
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    • pp.95-96
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    • 2023
  • The purpose of this study is to derive the limitations of the existing management system by analyzing the characteristics of the PC process to improve the PC construction project management system process. To overcome the limitations derived, we present a process of managing integrated information from the design-production-construction stage using QR codes and clouds. This is expected to help develop a PC construction project management system.

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The Voluntary Assurance of Quality by Contractors in the Construction Phase (건설 공사단계에서 수급자 중심의 품질확보방안)

  • Cha, Sang-Ho;Lee, Sang-Beom
    • Journal of the Korea Institute of Building Construction
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    • v.11 no.3
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    • pp.292-300
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    • 2011
  • The construction industry in Korea has seen significant improvements in quality management techniques, driven by the dramatic development of new technology through Manhattanization and enlargements, but compared with technical development, the level of building quality improvement is still lagging behind. In the meantime, as the interest in construction quality soars due to changes in user consciousness, the level of quality that is being demanded is rising. The government has reinforced quality systems by implementing responsible supervision requirements and granting overseas companies permission to enter the supervision business in Korea, and private sector companies also are attempting quality improvement through quality assurance approaches like the preliminary qualification screening system and ISO 9000 series. But currently, building constructions are done only according to the construction specifications of project owners, whose design, materials and construction methods are already decided, and do not leave any necessity or opportunity for technical developments for the quality improvement of contractors. Therefore, in this study, a work process and system improvement plan for payment regulations is proposed, with which contractors can secure quality voluntarily in the building construction phase.

The research and correspondence of schedule risk management at the pre-construction phase of curtain-wall (커튼월 공사의 착공 전 단계에서 공정 리스크 규명 및 대응방안)

  • Jung Tae-Sik;Kim chang-duk
    • Korean Journal of Construction Engineering and Management
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    • v.6 no.4 s.26
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    • pp.71-79
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    • 2005
  • As construction projects have been extremely enormous, complex and special, risk factors have been increased consistently. Therefore, it is very important to identify and cope with the uncertain risk factors in such building constructions for successful project accomplishment. The purpose of this research is to approach practical affairs directly and show detail alternatives of risk factors by extracting the risk factors throughout construction process of curtain wall that is largely influenced on cost, quality, schedule ,safety and following activity. Also, extracting these risk factors make it possible to analyze quantitative risk and decide the priority raking of risk factors. Especially, this research is aimed to provide efficient management of scheduling risk that can make the risk minimize to practical workers who have different degree of knowledge and experience to the construction cite when the risk brings out suddenly.

Schedule Risk Management of Reinforced Concrete Construction at the Preconstruction Phase (착공전 단계에서의 철근콘크리트 공사 공정리스크 관리 방안)

  • Ryu, Han-Guk;Kim, Sun-Kuk;Lee, Hyun-Soo
    • Korean Journal of Construction Engineering and Management
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    • v.6 no.5 s.27
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    • pp.119-127
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    • 2005
  • According to the recent systemic changes such as construction market reduction, five days per week system, introduction of construction duration reduction bidding system and post-construction sale system, the bidding competition have been enhanced. However, there are many construction schedule risks which could delay construction completion. Without the proper identification of construction schedule risks and the structured construction schedule risk management, the competitive advantages of construction project could not be made. Previous researches to solve the problem have been focused on the construction schedule categorization, construction schedule management, and the system development to manage the construction schedule risk. Therefore, this study selected the reinforeced concrete construction as the studied work due to the major impact characteristics on the total construction duration and the quite accident rate, and then proposed the real construction schedule risks of reinforced concrete construction and the construction risk management method based on the previous studies, many times of expert interviews and brainstorming.

The Development of Information Breakdown Structure for Integrated Management of Water Filtration Plants (정수장 시설공사의 통합관리를 위한 시설물분류체계 개발)

  • Kim, Chang Hak;Kang, Leen Seok;Kim, Hyo Jin
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.37 no.5
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    • pp.863-869
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    • 2017
  • In this study, the information breakdown structure of water purification plant has been made by classifying various the water purification methods and facilities. this can be utilized as a code system of computer for integrating information and analyzing quantitative of environmental impact and calculating cost of maintenance and energy consumption which was used during life cycle of water purification plant. Since the construction information contains many heterogeneous information, it is very important to have a code system for managing the integrated information. In addition, since water purification plant facilities are mainly composed of installation of facilities including many processes, a more detailed classification code is required. Therefore, in this study, the water purification breakdown structure which is not yet attempted in Korea was constructed by using facet classification system.

Hybrid Prototype of Performance and Prescriptive Specifications in Curtain Wall Construction (커튼월 공사의 성능·사양 연계 시방서 프로토타입)

  • Lee, Jun-Ho;Cho, Dong-Hyun;Koo, Kyo-Jin
    • Journal of the Korea Institute of Building Construction
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    • v.14 no.5
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    • pp.433-442
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    • 2014
  • The most design criteria and specifications in Korea utilized to ensure appropriate quality are based on process and prescriptive criteria determining materials, measure and methods. It has many problems including a loss of competitiveness resulting from inhibited creativity of the contractors. The performance-based specifications focused on final product are being proposed, but have difficulty in adapting to the architectural field. In this study the hybrid specification prototype for curtain wall construction was suggested. The specification framework was presented through analysis of linkage between the performance and prescriptive specification cases. Based on the survey with practitioners, the performance inspection process and the sample specification were developed by identifying the essential performance test timings. The applicability of the specification prototype was evaluated by interviews with experts. It was found that the prototype was active and a progressive supporting tool which could support to secure phased performance during construction as well as final performance.