• Title/Summary/Keyword: reconstruction project

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Analysis of Factors Affecting Economic Feasibility of Long-term Public Rental Housing Reconstruction Project

  • Joe, Won Goog;Cho, Jae Ho;Son, Bo Sik;Chae, Myung Jin;Lim, Nam Gi;Chun, Jae Youl
    • Architectural research
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    • v.24 no.3
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    • pp.85-91
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    • 2022
  • The public rental housing policy aims to provide the housing to the vulnerable class who do not have enough credit to own houses. The Korean government introduced new policies for housing supply to improve the availability of new houses. However, it is difficult to expand the supply because of the accumulated deficit of public rental housing. In this study, the economic feasibility of long-term public rental housing reconstruction projects was examined to ensure the economic and sustainable growth of public rental housing. The research found that the compensation for the accumulated deficit is needed. Also the research analyzed and identified the factors affecting the economic feasibility of reconstruction projects. The significant factors identified in this research are: the supply price of pre-sale/rental housing in the reconstruction project, total cost of the reconstruction project, and total floor area of the reconstruction project. According to the analysis results, it is necessary to increase the rent of existing long-term public rental housing, expand the government subsidy, increase the supply price of pre-sale/rental housing, and reduce the total project cost. However, there are limitations. For example, the fluctuations of construction market, residents' burden of housing costs, and the limit of the budget of the public housing authority. The increasing total Floor Area Ratio(FAR) limitation of the reconstruction project would be the realistic solution to the problem because it gives incentives to the reconstruction project.

Analysis of Image Quality and Optimized Reconstruction Window through Heart Rate and Its Variation in Retrospectively ECG-gated Coronary Angiography Using Multi-Detector Row CT

  • Lee, Sang-Ho;Park, Byoung-Wook;Kim, Hee-Joung;Haijo Jung;Kang, Won-suk;Son, Hye-Kyung;Choe, Kyu-Ok
    • Proceedings of the Korean Society of Medical Physics Conference
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    • 2002.09a
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    • pp.461-463
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    • 2002
  • Image quality and selection of optimized window for good quality reconstruction in coronary angiography using multi-detector row CT (MDCT) have not been studied by heart rate and its variation. Therefore, the effect of heart rate and its variation was systemically analyzed. Eighty-three patients were undergone contrast-enhanced coronary angiography using MDCT. In this study, sixty cases were enrolled. Two radiologists graded image quality as follows: 4, excellent; 3, good; 2, fair; l, bad. The starting points of the reconstruction window were chosen at seventy and forty percent of R wave interval. Optimized window was scored as 1 when 40% reconstruction was better quality than 70%, as 2 when 40% reconstruction is same as 70%, and as 3 when 70% reconstruction was better than 40%. Regression analysis was performed. The range of variation of beats per minute (BPM) was well correlated with image quality (r=-0.55, p=0.000), however correlation with optimized window percentage was not statistically significant (p=0.969). By contraries, median value of BPM was comparatively well correlated with optimized window grade (r=-0.24, p=0.086). Median value of BPM was not well correlated with image quality (r=0.l70, p=0.l97). Image quality is more affected by variation of heart rate (VHR) than by higher heart rate. Selection of optimized reconstruction window for good image quality is mainly affected by heart rate and there is a tendency that systolic phase reconstruction is better in image quality than diastolic reconstruction in higher heart rate.

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INCENTIVE/DISINCENTIVE PROJECT SUCCESS FACTORS DURING MACARTHUR MAZE I-580 BRIDGE SPAN REPLACEMENT

  • Jae-Ho Pyeon;Marc Zomoradi
    • International conference on construction engineering and project management
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    • 2013.01a
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    • pp.328-331
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    • 2013
  • Incentive/Disincentive (I/D) contracting experiences in many states have been evaluated in terms of time and cost performance and substantial project time savings were found in many project cases. However, there is little understanding on individual project success factors for I/D projects during construction. This paper explores the significance of I/D clause in the success of the MacArthur Maze reconstruction project and summarizes a list of group causes that explains and elaborates on the detailed factors. The methods used for carrying out this study started with a search of online media and news reports and contract documents were also obtained from Caltrans. After review of the preliminary information, Interviews were performed with the Caltrans Resident Engineer and the contractor's project manager who were in charge of the MacArthur Maze reconstruction. In conclusion, the evaluation of their responses hinted at six significant cause groups responsible for the project's success. These groups can be listed as: 1) Motivation, 2) Policy, 3) Teamwork, 4) Communication, 5) Expectation, and 6) Resource Management.

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A Study on the CM Application to the Apartment Reconstruction Project - Focused on the CM Work Scope in the Reconstruction Project - (공동주택 재건축사업의 건설사업관리 적용방안에 관한 연구)

  • Kim Kwan-Whae;Yoo Moung Nam;Seo Jae-Woong;Hyun Chang-Taek
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • autumn
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    • pp.251-256
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    • 2001
  • After the late 70's, the apartment housing have been constructed numerously, but the apartment housing has been deteriorated and the maintenance cost has been increasingly upward as time goes by. Because of that, the reconstruction of the apartment housing is widespread in the late 90's. But as the owner, the congregation, is not an expert, there are many problems in the reconstruction projects. Thus, the necessity of the CM in the reconstruction project is getting higher, but the appropriate method for the application of the CM is not established yet. In this study, the CM work scope that is applicable in the reconstruction project is developed through the inquiry and interview to the experts. Especially, The work scope developed in this study is established to be adapted easily in the practical use for each project phase.

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The Vision of Urban Redevelopment & Reconstruction and the Policy of Deregulation (도시재개발.재건축의 규제완화와 개발사업 "비전")

  • Jeong, Mu-Yong
    • Journal of the Korean Professional Engineers Association
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    • v.41 no.4
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    • pp.24-31
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    • 2008
  • How to do redevelopment & reconstruction project of the old city in the seoul metropolitan policy? Focusing on the vision of future urban development that it will be necessary to divert from problem of regulation to policy of deregulation. After the redevelopment & reconstruction policy is improving as soon so possible that it must be reflected urban development project.

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A Study on CM Process Model for Reconstuction Project (주택 재건축 정비사업의 건설사업관리(CM) 적용 모델 구축)

  • Ahn, Kyung-Hwan;Cha, Woo-Chul;Chun, Jae-Youl
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2007.11a
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    • pp.295-298
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    • 2007
  • Recently, various problems have been occurred in Apartment reconstruction process. Such as, delaying schedule, additional cost increasing, etc. Those were caused by decision making which is lack of professionality in early phase of reconstruction process. Therefore, in this study proposed improvement plan by application of project management and construction management process in Apartment reconstruction project.

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A Study of Risk Analysis on Apartment Reconstruction Projects (공동주택 재건축사업의 리스크 분석에 관한 연구)

  • Lee Lo-Na;Woo Kwang-Min;Lee Hak-Ki
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2004.11a
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    • pp.232-235
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    • 2004
  • The apartment reconstruction project is making some problems, such as delay of lack specialty, conflict between project owners and cost increasing etc. The enforcement process of project are very complicated, the term of project is long and too many project owners are participating. For this reasons. it is always in the face of uncertainty. To promote the reconstructing project successfully. we need to make risk management process to get rid of uncertain factors which occur in forwarding the reconstructing project This study has for its objects. First, suggest the best way of risk analysis to manage risk factors systematically and efficiently recognized in The Apartment reconstruction protect. Second, furnish basic data to build the risk managing system of The apartment reconstructing project.

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A Study on The Conflict Management for Apartment Reconstruction Project (공동주택 재건축사업의 갈등관리에 관한 연구)

  • Lee, Ro-Na;Lee, Hak-Ki
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2008.11a
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    • pp.467-470
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    • 2008
  • Apartment Reconstruction project causes lots of conflicts among stakeholders who don't have professional knowledge on a complicated work-flow In case these conflicts occur, the project might not be well by the damage passed to parties, and so the project cost might be increased, the project might be delayed and hazy as well if the conflicts are not resolved quickly. However, the damage would be indirectly and directly brought to the main parties in apartment reconstruction project because the conflicts aren't managed. Thus, an effective conflict assessment should be preceded, and a process and a system for managing the conflicts should be developed to prevent and settle the conflicts. The purpose of this study classifies the conflicts which are occurred on each phase of the project based on principal facts, and presents the process to develop conflict management system through conflict assessment to each stakeholder.

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Improving Constructability for Partnering in Large Hospital Construction Projects (대형병원 프로젝트의 시공성 증대를 위한 파트너링 모델 구축)

  • Kim Sang-Il
    • Korean Journal of Construction Engineering and Management
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    • v.5 no.3 s.19
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    • pp.153-165
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    • 2004
  • Most engineering tasks require collaboration between many users in major hospital construction projects that have many reconstructions. Loss and change orders occurred in factors such as information exchange, misunderstandings, advanced technology in hospital projects. Moreover, changes in context, costs, requirements, deadlines, etc. require negotiation of issues that may modify important project characteristics. The objective of this paper is to reduce reconstruction for the pre-construction process of hospital projects, reconstruction factors were analyzed in recent hospital construction project the system was established in order to solve reconstruction factors, and this system was validated through applying to the real project. Therefore it is a major challenge to make high level of communication and to have mutual understanding.

FORECASTING THE COST AND DURATION OF SCHOOL RECONSTRUCTION PROJECTS USING ARTIFICIAL NEURAL NETWORK

  • Ying-Hua Huang ;Wei Tong Chen;Shih-Chieh Chan
    • International conference on construction engineering and project management
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    • 2005.10a
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    • pp.913-916
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    • 2005
  • This paper presents the development of Artificial Neural Network models for forecasting the cost and contract duration of school reconstruction projects to assist the planners' decision-making in the early stage of the projects. 132 schools reconstruction projects in central Taiwan, which received the most serious damage from the Chi-Chi Earthquake, were collected. The developed Artificial Neural Network prediction models demonstrate good prediction abilities with average error rates under 10% for school reconstruction projects. The analytical results indicate that the Artificial Neural Network model with back-propagation learning is a feasible method to produce accurate prediction results to assist planners' decision-making process.

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