• Title/Summary/Keyword: PC공동주택

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Proposal of PC Core System for Modular Housing (모듈러주택 적용을 위한 PC코어 시스템 제안)

  • Minjun, Kim
    • Land and Housing Review
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    • v.14 no.1
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    • pp.115-122
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    • 2023
  • Modular construction is popular as a smart building system because it can shorten the construction period. This study proposed a precast concrete (PC) core system that can further shorten modular construction time. The system was developed and its structural performance was verified through computational analysis. The proposed PC core system is a complete PC construction method using dry bonding. The results of the study indicated that the proposed PC core system has structural stability and performance suitable for modular housing.

Mathematical Algorithm for Members Erection Period of Beam-Column System PC Apartment Building (보-기둥구조 PC공동주택의 부재 조립기간에 대한 수학적 알고리즘)

  • Kim, Ki-Ho;Lee, Bum-Sik;Kim, Jin-Won;Lee, Dong-Gun;Kim, MIn-Jun;Sohn, Jeong-Rak
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2023.05a
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    • pp.117-118
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    • 2023
  • Estimating the construction period at the initial stage of the project and determining whether it is appropriate is very important for the developer's decision-making and the success of the construction company's business. Existing researchers have conducted various studies to calculate the appropriate construction period, but there is no study on the influencing factors and methodology for the construction period of beam-column PC apartment building frame construction. The purpose of this study is to calculate the PC member assembly time using the mathematical algorithm of PC member assembly. The results of this study can be used as basic data to calculate the construction date of the standard floor of PC construction.

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A Study to Analyze the Assembly Process of Precast Concrete Wall Panels in Beam-Column Frame Apartment Buildings (보-기둥구조 PC공동주택 PC벽체의 조립공정 분석 연구)

  • Kim, Ki-Ho;Lee, Bum-Sik;Kim, Min-Jun;Lee, Dong-Gun
    • Journal of the Korea Institute of Building Construction
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    • v.24 no.4
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    • pp.495-506
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    • 2024
  • Unlike reinforced concrete(RC) construction, the primary determinant of construction schedule for precast concrete(PC) apartment buildings is the lifting equipment. To establish a dry process-centric construction schedule, this study analyzes the lifting unit process for core, internal, and external PC wall components, which differ from traditional PC components. By examining the assembly process of these wall types, the study aims to determine the construction cycle for a standard floor frame of a PC apartment building. The findings will serve as foundational data for developing construction schedules for PC apartment buildings utilizing PC walls.

Writing ADM Network Diagram of Frame Work for the Precast Concrete Public Apartment Building Construction Management (보-기둥구조 PC공동주택 시공관리를 위한 골조공사 ADM공정표 작성)

  • Kim, Ki-Ho;Kim, MIn-Jun;Kim, Jin-Won;Lee, Dong-Gun;Sohn, Jeong-Rak;Lee, Bum-Sik
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2022.11a
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    • pp.221-222
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    • 2022
  • In this study, the work flow of the construction process was analyzed based on construction monitoring for a building of the middle size beam-column system Precast Concrete(PC) apartment building supplied by LH, and the Arrow Daigram Method(ADM) network diagram of its construction was written. The results of this study are judged to be able to improve productivity by using the PC structure apartment building construction plan to calculate a reasonable construction period and prepare a process management method for the PC structure frame construction.

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A Study on the Performance Evaluation of Waterproof Sealant Materials for the Exterior Wall of PC Apartment House (PC 공동주택 외벽용 방수 실란트 자재의 성능 평가 연구)

  • Ko, Hyo-Jin;Kim, Yong-Ro
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2023.11a
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    • pp.221-222
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    • 2023
  • In this study, the performance evaluation of waterproof sealant materials applied to the outer wall of PC apartment houses was conducted. The sealant for PC members must have resistance to movement, and since it is exposed to outside air, weather resistance and water resistance are required.

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Relationship Analysis of Field Work in Beam-Column System Frame Work of the Precast Concrete Public Apartment Building (보-기둥구조 PC공동주택 골조공사 작업관계 분석)

  • Kim, Ki-Ho;Kim, Jin-Won;Kim, MIn-Jun;Lee, Dong-Gun;Sohn, Jeong-Rak;Lee, Bum-Sik
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2022.11a
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    • pp.41-42
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    • 2022
  • This study analyzed the process related to the linkage between on-site work targeting the middle size Precast Concrete(PC) public apartment building with beam-column system and prepared on-site works flow relationship diagram in which the wet process consists of core Critical Path(CP) to prepare a network diagram of the Precedence Diagram Method(PDM). Through this study, it is expected that it will be possible to maximize the project management capability by suggesting a method to minimize risk factors and the optimized process management of the beam-column system PC public apartment building.

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Absolute Comparison of Construction Periods between Precast Concrete and Reinforced Concrete Apartment Buildings (PC 및 RC공동주택 골조공사에 대한 공사기간 절대비교)

  • Kim, Ki-Ho;Lee, Bum-Sik;Kim, Jin-Won;Kim, Yeon-Ho;Lee, Dong-Gun;Sohn, Jeong-Rak
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2023.05a
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    • pp.293-294
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    • 2023
  • In accordance with recent changes in construction trends, interest in introducing the OSC, such as the Precast Concrete, is increasing in apartment buildings. In domestic studies, studies on the prediction of the construction period of PC apartment buildings through simulation have been conducted, but there is no study on the comparison of the construction period according to the actual construction of Precast Concrete(PC) and Reinforced Concrete(RC). Therefore, this study seeks to grasp the technology of the current PC construction method and to secure the original technology of project management through comparison of the absolute time of frame construction for PC and RC buildings composed of the same plane.

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Feasibility Analysis of the Use of Architectural PC for Improving the Productivity in Apartment Housing Projects (공동주택 공사에서의 생산성 향상을 위한 건축 외관용 PC의 적용 타당성 분석)

  • Lee, Hyun-Seok;Sohn, Young-Jin;Lee, Yoon-Sun;Kim, Jae-Jun
    • Korean Journal of Construction Engineering and Management
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    • v.9 no.3
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    • pp.118-125
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    • 2008
  • In Korea, five days per week system, duration reduction bidding system, and post sale system have recently stimulated an interest in productivity improvement in construction project. However, analysis result of productivity in Korean construction industry found that the productivity is too low. APC (Architectural PC) is alternative of reveal wall and parapet in apartment housing prcjects and is used abroad broadly because of duration reduction for productivity improving. APC is used as external curtain wall in Dubai, North America, and Southeast Asia. Therefore, it is proposed that necessary to Introduce APC in Korea. The objective of this study is to draw up introduction of APC in apartment housing projects. We analysed the feasibility of the use of APC. The survey results reported that APC would be able to improve the productivity in the eight productivity factors.

A Study on the Policy Agenda for Activating PC Apartment using Focus Group Interview(FGI) (FGI를 사용한 PC공동주택 활성화 정책과제 모색)

  • Bae, Byung-Yun;Kang, Tai-Kyung;Shin, Eun-Young;Kim, Kyong-Hoon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.12
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    • pp.888-895
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    • 2020
  • In the construction industry, off-site construction (OSC) is drawing attention as a production method due to changes in working hours and the supply and demand of manpower. In 1991, there was a policy of spreading and expanding the use of precast concrete (PC) apartment homes, but they have not been actively used so far since they were discontinued due to quality problems. In this study, policy tasks were analyzed to motivate the application of OSC-based PCs in the apartment housing sector, and policy directions were derived by conducting focus group interviews (FGI). Nine policies are suggested regarding the following topics: PC apartment supply quantity provision, priority application of public housing, priority supply of public housing, preferential floor area ratio, funding, tax support, improvement of business area structure, improvement of delivery method, factory certification system, and training of experts. The results of the FGIs are as follows. First, in order to revitalize PC apartment homes, leading efforts from the public sector are required. Second, rather than reorganizing the business sector or introducing a new delivery method, a policy direction that induces the strengthening of cooperation is desirable. Third, PC activation should be promoted on an institutional basis for securing appropriate construction costs and quality.

A Study on Development of Construction Standard Production Rates and Cost Analysis for Off-Site Construction (OSC)-Based PC Structure Construction Costs - Comparison with RC Method - (OSC기반 PC구조 공사비 산정을 위한 품셈개발 및 공사비 분석 - RC공법과 비교 -)

  • Lee, Hansoo;Lee, Chiho;Han, Heesu;Lee, Jeongwook
    • Korean Journal of Construction Engineering and Management
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    • v.25 no.2
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    • pp.56-68
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    • 2024
  • A construction standard production rates system for the factory built and on-site installation phases of OSC (Off-Site Construction)-based precast concrete (PC) structures in apartment buildings was recently proposed to establish an objective cost standard (Lee et al., 2021). In addition, the Korean government has taken steps to improve the institutional foundation for the systematic calculation of PC construction costs such as revising construction standard production rates for major components that can be applied to the on-site installation phase of PC method. In this study, we analyzed the results of a field survey of apartment building PC structures and collected expert opinions to develop factory-built and on-site installation standard production rates that can be applied to apartment building PC method. We also propose directions for improving the standard production rates so that they can be applied to the site and component of apartment buildings by comparing them with the current standard production rates. This study also derived the cost characteristics and cost reduction measures of PC construction by calculating the construction costs using the developed rates and comparing the construction costs with the RC methods of apartment buildings of the same scale. The construction standard production rates for PC construction derived in this study are expected to contribute to the spread of PC construction by ensuring the objectivity and consistency of the results of PC methods cost estimation.