• 한국건설관리학회논문집
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• 제16권3호
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• pp.3-10
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• 2015

건설 프로젝트의 VE는 크게 설계단계 VE와 시공단계 VE로 분류된다. 설계단계 VE는 정부의 법률에 의해 100억 원 이상의 공공 건설공사에 적용해야만 한다. 따라서 설계VE는 건설 프로젝트에 적극적으로 적용되고 있다. 이와는 대조적으로, 시공 VE는 제한된 특정 건설 프로젝트에 적용되고 있다. 그 이유는 시공 VE 프로세스가 실무적 요구 품질을 반영 할 수 없기 때문이다. 시공 VE는 시공 가능성에 대한 타당성 검증을 통해 긍정적인 효과를 구현할 수 있다. 이에 본 연구에서는 실무를 반영한 시공 VE의 방법을 제안하고자 한다. 제안 방법은 직관지수(G.F.I.)를 활용한 전문가 기반의 대안평가 방법이며, 제안 방법의 적용성을 검증하기 위해 실무사례에 적용하였다. 그 결과 제안된 대안평가 방법은 기존의 방법보다 적용 절차, 적용 방법 측면에서 효율성이 높은 것으로 나타났다.

• 한국건설관리학회논문집
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• 제6권4호
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• pp.122-132
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• 2005

건설 프로젝트의 설계VE는 비용 절감 및 품질 향상을 위한 주요 수단이며 최근 그 중요성이 부각되고 있다. 특히 올 하반기부터는 건설공사비 100억원 이상 프로젝트까지 VE검토가 확대 적용되어 더욱 더 활성화될 것으로 예측된다. 따라서 설계VE를 체계적이고 효율적으로 수행할 수 있는 방법이 요구되지만 국내에선 아직까지는 이에 미치지 못하고 있다. 따라서 본 연구에서는 설계단계 YE를 효율적으로 실시할 수 있는 방법을 모색하고자 한다. 그 방법은 설계YE 준비단계 업무에 QFB(Quality Function Deployment)를 적용하는 것으로 이는 발주자 요구사항을 체계적으로 반영하고 기능분석을 효과적으로 실시하는데 기여할 것으로 판단된다.

• 플랜트 저널
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• 제7권3호
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• pp.65-73
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• 2011

This research has suggested a method to select pipe wall thickness by application of the value engineering to reduce the cost and quantity that are major part of construction materials. This research shows that the application of value engineering reduces the cost of piping materials by optimizing pipe wall thickness while maintaining process flow date of design pressure and design temperature. Based on this knowledge, the application of the value engineering will lead to the cost reduction and quantity reduction by effective selection of pipe wall thickness. The application of the value engineering will help the EPC companies to win a contract in the overseas plant market.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1294-1299
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• 2009

Best value in value engineering has relation to cost and performance. But a severe problem in VE study of a project is to reduce value due to loss of performance, caused by focusing on cost reduction. Also a lack of understanding performance concept, no trial VE workshop as well as cost saving-based policy have not satisfied customer needs. A efficient and practical methodology for accomplishing best value in construction projects is proposed. This study developed a more objective approach for performance measurement approach of mega projects and suggested a systematic process of performance quantitative analysis verifying value improvement. The proposed performance measurement method would be very useful for better communication and consensus between stakeholders and VE team especially through value engineering.

• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.115-121
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• 2013

A number of urban renewal projects are currently being implemented around the world. Current project management tools are limited in effectively dealing with numerous issues regarding management of these projects (e.g., simultaneous execution of multiple projects). As an effort to address this deficiency, an Intelligent Program Management Information System (i-PgMIS) was developed for effective management of urban renewal projects. The i-PgMIS is a web-based system consisting of various modules including cost management, schedule management, risk management, change management, eco-value engineering (EVE) and so on. Based on the recognition of increasing awareness of creating sustainable built environment, this paper focuses on the EVE module that can support eco-value analysis at program-level management. The EVE module is expected to enhance value and sustainability of construction processes throughout the whole 'program' lifecycle and further to support program feasibility study based on life cycle costing.

• 한국농촌건축학회논문집
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• 제7권2호
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• pp.1-8
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• 2005

In a rural house, it is necessary to make a quality model that choose effective design value engineering. So more effective models, this study examine requests of a rural house project designers, constructors, and tenants. Checked items are classified into four groups that working area, dwelling area, constructive and environmental parts. Each groups are also divided into detailed items for basic decisional elements. When basis points sets 10, it can be divided that working area parts 3pts, dwelling area parts 2.5pts, constructive parts 3pts and environmental parts 1.5pts. In this results, we can make a proposal of evaluation on additive value quality model for a rural house in design value engineering.

• 한국농촌건축학회논문집
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• 제8권1호
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• pp.9-16
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• 2006

In campus project, "Barrier Free Design" is the essential part for the handicapped. It is necessary to make a quality model that choose effective design value engineering objects. So more effective models, this study examine requests of the university students. Checked items are classified into four groups that movement, guidable, safety and territoria parts, and each groups are also divided into detailed items for basic decisional elements. When basis points sets 10, it can be divided that movement parts 2.93pts, guidable parts 2.31pts, safety parts 2.41pts and territoria parts 2.35pts. in this results, we can make additive value and quality model for barrier free design in campus design value engineering.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.111-113
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• 2015

Floats are used by the parties involved in a construction project. The owner may use float by changing order(s) or by executing risk avoidance plan; the contractor may use it for leveling resources or substituting activities' construction methods to reduce costs. Floats are accepted either just as by-product obtained by critical path method(CPM) scheduling or as asset having significant value. Succinctly, existing studies involved in float value does not consider its' changes on project time domain. It is important to identify float ownership and to quantify its' corresponding values. This paper presents a method that quantifies float value of money that changes over project execution. The method which accurately computes the monetary value of float may contributes to resolve conflicts relative to float ownership and/or delay issues among project participants. It compares the difference between the monetary value of total float - on non-critical path in each and every schedule update. It makes use of critical path method (CPM) and commercial software with which practitioners are already familiar.

• Journal of Industrial and Engineering Chemistry
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• 제67권
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• pp.123-131
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• 2018

Using mixed nonionic surfactants Span/Tween, we investigated the effects of HLB value on the O/W emulsion stability and rheological behaviors. In this study, MS-01 (Span 60 & Tween 60) and MS-02 (Span 80 & Tween 80) was used as mixed nonionic surfactants. We considered required HLB value 10.85 and selected corresponding HLB value range 8-13. The droplet size distributions, droplet morphology, rheological properties, zeta-potential and creaming index of the emulsion samples were obtained to understand the mechanism and interaction of droplets in O/W emulsion. The results indicated that optimal HLB number for O/W emulsions was 10.8 and 10.7, while using MS-01 surfactant and MS-02 surfactant respectively. MS-01 (HLB = 10.8) sample and MS-02 (HLB = 10.7) sample showed smallest droplet size and highest zeta-potential value. Rheological properties are measured to understand rheological behaviors of emulsion samples. All emulsion samples showed no phase separation until 30 days storage time at $25^{\circ}C$.

• 한국건설관리학회논문집
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• 제7권1호
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• pp.128-137
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• 2006

최근 들어 설계VE의 역할 및 중요성은 날로 부각되고 있으므로 업무를 효율적으로 수행할 수 있는 방안에 관한 연구가 요구된다. 하지만 국내에는 설계VE가 도입 된지 얼마 되지 않아 연구 활동이 미진한 측면이 많다. 이에 본 연구에서는 설계VE 업무의 효율화를 위한 수행 기준을 제시하고자 한다. 그 방법은 설계VE 업무 수행과정에서 발생되고 있는 다수의 문제 요인을 도출하는 것으로 1차적으로 VE 전문가 교육의 팀 프로젝트 사례를 분석하고, 2차적으로 교육을 이수한 각 분야별 전문가를 대상으로 팀 프로젝트 진행과정에서 발생된 문제 요인을 설문조사를 통해 분석하는 것이다. 그리고 분석된 내용을 기반으로 설계VE 업무 효율화를 위한 중점 관리 요인을 제시하고 그에 따른 업무 효율 최적화 방안 및 절차를 제안하고자 한다.