• Title, Summary, Keyword: life cycle cost(LCC)

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A Case study of Life Cycle Cost Analysis on Apartment houses and Han-Ok (아파트와 한옥의 LCC(Life Cycle Cost)분석 사례 연구)

  • Kim, Keun-Woo;Yun, Seok-Heon
    • Journal of the Korea Institute of Building Construction
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    • v.10 no.6
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    • pp.1-6
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    • 2010
  • To analyze the total cost of ownership in a building construction project, we have to consider initial plan, maintenance and operation cost, in addition to the design and construction cost. This is called "Life Cycle Cost (LCC)." Currently, it is difficult to analyze LCC because of a lack of data and the appropriate criteria. This study tries to suggest a way to analyze the LCC of building construction projects, and apply it to case studies of modern apartment houses and Han-Ok, a type of traditional Korean house. The case studies found that a Han-Ok is more efficient than a modern apartment house from an LCC point of view, in terms of maintenance and operation cost.

Development of Life Cycle Cost Estimation Software on the Aspect of Maintenance Strategies (유지보수관점에서의 수명주기비용예측 소프트웨어 개발)

  • Jun, Hyun-Kyu;Kim, Jae-Hoon;Kim, Jong-Woon;Park, Jun-Seo
    • Proceedings of the KSR Conference
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    • pp.777-783
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    • 2007
  • Life cycle costing is one of the most effective cost approaches when we choose a solution from series of alternative so the least long-term cost ownership is achieved. Life cycle costing in railway industry has been focused on the prediction of investment for railway vehicles. But in today, the life cycle cost, LCC, prediction on the aspect of operation and maintenance cost through whole life cycle is highly necessary. In this paper, we present a strategy for the development of life cycle cost estimation software on the aspect of maintenance strategies of railway vehicle. For this purpose, we suggested a structure of LCC software based on the UNIFE LCC model. And we developed a pilot version of software to evaluate the LCC model that we suggested for railway vehicle. We performed LCC analysis on the brake module of metro vehicle in case study and concluded that the software and model developed in this research could enough to support engineers in choosing better cost effective solutions from many alternatives.

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A Study on the Development of Life Cycle Cost Analysis Methodology in HVAC system for Decision Maker (의사 결정자를 위한 HVAC 시스템의 LCC 분석 방법론 개발에 관한 연구)

  • Jung, Soon-Sung
    • Journal of the Korean Solar Energy Society
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    • v.24 no.4
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    • pp.55-63
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    • 2004
  • The purpose of this study is to development of life cycle cost analysis methodology of HVAC system for decision maker. The results of this study are as follows; maintenance/management, equipment construction, planning/design, and demolition/sell phases (1) To develop the cost breakdown structure for LCC in HVAC system, this study apply the method of additional pertinent level, title, CBS number, block number and variable index. (2) LCC analysis order of HVAC system compose four phase. (3) Life cycle costing influence diagram can bring us to make the most efficient decision through a visual graphical diagram that is shown relationship among variables and that decision maker traces easily from life cycle cost analysis situation.

A Methodology on Estimating the Product Life Cycle Cost using Artificial Neural Networks in the Conceptual Design Phase (개념 설계 단계에서 인공 신경망을 이용한 제품의 Life Cycle Cost평가 방법론)

  • 서광규;박지형
    • Journal of the Korean Society for Precision Engineering
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    • v.21 no.9
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    • pp.85-94
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    • 2004
  • As over 70% of the total life cycle cost (LCC) of a product is committed at the early design stage, designers are in an important position to substantially reduce the LCC of the products they design by giving due to life cycle implications of their design decisions. During early design stages, there may be competing concepts with dramatic differences. In addition, the detailed information is scarce and decisions must be made quickly. Thus, both the overhead in developing parametric LCC models fur a wide range of concepts, and the lack of detailed information make the application of traditional LCC models impractical. A different approach is needed, because a traditional LCC method is to be incorporated in the very early design stages. This paper explores an approximate method for providing the preliminary LCC, Learning algorithms trained to use the known characteristics of existing products might allow the LCC of new products to be approximated quickly during the conceptual design phase without the overhead of defining new LCC models. Artificial neural networks are trained to generalize product attributes and LCC data from pre-existing LCC studies. Then the product designers query the trained artificial model with new high-level product attribute data to quickly obtain an LCC for a new product concept. Foundations fur the learning LCC approach are established, and then an application is provided.

Life Cycle Cost Analysis for Design of Buildings based on the Lifetime Risk (생애 위험도기반 건축물의 설계단계 생애주기비용 분석 방법)

  • Baek, Byung-Hoon;Cho, Choong-Yeon
    • Korean Journal of Construction Engineering and Management
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    • v.15 no.3
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    • pp.113-119
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    • 2014
  • Recently, the demand on the practical application of life-cycle cost effectiveness for design and rehabilitation of structure is rapidly growing unprecedently in engineering practice. Accordingly, in the 21st century, it is almost obvious that life-cycle cost together with value engineering will become a new paradigm for all engineering decision problems in practice. However, in spite of impressive progress in the researches on the LCC, the most researches have only focused on the Deterministic or Probabilistic LCC analysis approach (Level-1 LCC Model) at design stage. Thus, the goal of this study is to develop a practical and realistic methodology for the Lifetime risk based Life-Cycle Cost (LCC)-effective optimum decision-making at design stage.

Practical Application of Life-Cycle Cost Effective Design and Rehabilitation of Bridges

  • Cho, HyoNam;Park, KyungHoon;Hwang, YoonGoog;Lee, KwangMin
    • Corrosion Science and Technology
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    • v.3 no.2
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    • pp.72-80
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    • 2004
  • Recently, the demand on the practical application of life-cycle cost effective design and rehabilitation of bridges is rapidly growing in civil engineering practice. However, in spite of impressive progress in the researches on the Life-Cycle Cost (LCC), the most researches have only focused on the theoretical point but did not fully incorporate the critical issues for the practical implementation. Thus, this paper is intended to suggest a systemic integrated approach to the practical application of various LCC methodologies for the design and rehabilitation of bridges, For that purpose, hierarchical definitions of LCC models are presented to categorize the approach of LCC assessment applicable for the practical implementation. And then, an integrated LCC system model is introduced with an emphasis on data uncertainty assessment and user-friendly knowledge-based database for its successful implementation. Finally, in order to demonstrate the LCC effectiveness for design and rehabilitation of real bridge structures, illustrative examples are discussed.

Life-Cycle Cost Optimization of Steel Box Girder Bridges (강상자형교의 생애주기비용 최적설계)

  • 조효남;민대홍;권우성
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.15 no.4
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    • pp.557-566
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    • 2002
  • This paper presents an optimum deck and girder system design for minimizing the life-cycle cost(LCC) of steel box girder bridges. The problem of optimum LCC design of steel box girder bridges is formulated as that of minimization of the expected total LCC that consists of initial cost, maintenance cost and expected retrofit costs for strength, deflection and crack. To demonstrate the cost effectiveness of LCC design of steel box girder bridges, the LCC optimum design is compared with conventional design method for steel box girder bridges. From the numerical investigations, it may be positively stated that the optimum design of steel box girder bridges based on LCC will lead to mote rational, economical and safer design.

A Study on Algorithm of Life Cycle Cost for Improving Reliability in Product Design (제품설계 신뢰성 제고를 위한 LCC의 알고리즘 연구)

  • Kim Dong-Kwan;Jung Soo-Il
    • Journal of the Korea Safety Management and Science
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    • v.7 no.5
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    • pp.155-174
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    • 2005
  • Parametric life-cycle cost(LCC) models have been integrated with traditional design tools, and used in prior work to demonstrate the rapid solution of holistic, analytical tradeoffs between detailed design variations. During early designs stages there may be competing concepts with dramatic differences. Additionally, detailed information is scarce, and decisions must be models. for a diverse range of concepts, and the lack of detailed information make the integration make the integration of traditional LCC models impractical. This paper explores an approximate method for providing preliminary life-cycle cost. Learning algorithms trained using the known characteristics of existing products be approximated quickly during conceptual design without the overhead of defining new models. Artificial neural networks are trained to generalize on product attributes and life cycle cost date from pre-existing LCC studies. The Product attribute data to quickly obtain and LCC for a new and then an application is provided. In additions, the statistical method, called regression analysis, is suggested to predict the LCC. Tests have shown it is possible to predict the life cycle cost, and the comparison results between a learning LCC model and a regression analysis is also shown

The Life Cycle Cost Estimation using the Maintenance Information of a Propulsion Control System in the High Speed Train(KTX-1) (고속철도차량(KTX-1) 추진제어장치의 유지보수정보를 이용한 수명주기비용 예측)

  • Kim, Jae-Moon;Yun, Cha-Jung;Kim, Yang-Su;Jang, Jin-Yeong;Lee, Jong-Seong
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.60 no.11
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    • pp.2176-2181
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    • 2011
  • This paper estimates the life cycle cost(LCC) of a propulsion control system using the maintenance information in the high speed train(KTX-1). Life cycle costing is one of the most effective approaches for the cost analysis of long-life systems such as the KTX-1. Until now, most life cycle cost of the system has been studied as a whole system viewpoint. But in case of railway industry, LCC studies are needed on the subsystem like a propulsion control system because subsystems are developed continuously localization. This paper proposes the life cycle cost model which fitted to estimate life cycle cost (LCC) using maintenance information manual. As a result, LCC on propulsion control system increased moderately expect for periodical time when major parts are replaced at the same time. Results will be reflected in the development of domestic products.

Forecasting and Prolonging Method of Optimum Economic Life for Office Buildings using Life Cycle Cost (LCC분석에 의한 오피스건축물의 최적경제수명추정분석 및 장수명화에 관한 연구)

  • Yang Bong-Seog;Jeong Hee-Cheol;Kim Kyung-Rai
    • Korean Journal of Construction Engineering and Management
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    • v.2 no.4
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    • pp.135-143
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    • 2001
  • The purpose of this study is to estimate and analyze the optimum economic life of office buildings in consideration of their LCC (Life Cycle Cost), and thereby, explore the ways to manage the outlived office buildings economically. In estimating the economic life, initial investment cost and maintenance cost are taken into due consideration. For this study, those office buildings in Yeouido and Mapo region were sampled. The surveyed details were reduced to unit area to calculate a unit value, and then, their optimum economic life was estimated using LCC. Five alternatives for management of outlived office buildings were compared in terms of reconstruction or rehabilitation cost.

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