• Journal of Construction Engineering and Project Management
• /
• 제4권1호
• /
• pp.15-28
• /
• 2014

Completing road construction projects within the budget and time has been a problem for the Tanzania National Roads Agency (TANROADS); and the major problem highlighted in almost all projects being inadequate design. However, the extent to which inadequate design contributes to both time and cost overruns and its causes remained under-studied. The objective of this study is therefore to determine the extent of the effect of inadequate design, its causes and remedial measures. The methodology used in this study includes reviewing recent projects completion reports, holding roundtable discussions with consultants and TANROADS officials and analyzing the information. Cost and time overruns for the reviewed projects averaged 44% and 26% respectively. Similarly, the extents to which inadequate design contributes to cost and time overruns were on average found to be 61% and 85% respectively. The overruns are predominantly related to problems that occurred during the design process. To alleviate the problem, TANROADS is advised to improve the management of design projects, enhance the process of reviewing design reports, improve the design process including introducing Road Safety Audit and geometric design manuals, and increase staff to match the work-load.

• The Journal of Asian Finance, Economics and Business
• /
• 제7권9호
• /
• pp.389-400
• /
• 2020

A construction project is a designed product made up of labors, materials, and installations in the project positioned on the ground and may include the underground and ground section, and the section in water or on the water surface. It is a civil, industrial, transport, agricultural and rural development, infrastructure, or some other. A key phase in the life cycle of these construction projects is the implementation when building products are made directly with workers, equipment, materials, and managers. If there is a lack of management experience, information, and problem-solving solutions to tackle the risks faced by contractors, especially foreign ones, will fail in controlling the project's cost. This study was conducted with investigations, discussions, and evaluation of the factors that lead to cost overruns in the construction projects of international contractors in Vietnam. The principal component analysis (PCA) showed that those factors that influence cost overruns these construction projects fall into five general groups, including factors related to (i) the owners, (ii) the foreign contractors, (iii) the subcontractors and suppliers, (iv) state management, and (v) the project itself. Besides, the study proposes solutions to limit cost overruns in construction projects and improve the profitability of international contractors in Vietnam.

• 한국건설관리학회:학술대회논문집
• /
• 한국건설관리학회 2007년도 정기학술발표대회 논문집
• /
• pp.728-731
• /
• 2007

In-planned duration and cost at project closing are the two of criteria of successful project and successful project management. In Vietnam, regularly, construction projects are delayed and their costs are overrun. This research employed a questionnaire survey to elicit the causes of this situation by interviewing 87 Vietnamese construction experts. After processing data, 21 causes of delay and cost overruns appropriate with building and industrial project in construction stage were inferred and ranked. Spearman's rank correlation tests showed that there're no differences in the viewpoints between parties in project.

• 한국건설관리학회논문집
• /
• 제25권3호
• /
• pp.27-36
• /
• 2024

원가초과의 억제는 건설기업의 수익성 확보를 위해 매우 중요한 현안이다. 특히 원자재 가격 상승, 고금리 정책에 따른 금융비용 상승 등과 같이 원가 상승 압박이 큰 상황에서 실패비용 발생으로 인한 원가초과는 건설기업의 수익성에 매우 부정적인 영향을 미친다. 본 연구의 목적은 IPA기법을 활용하여 건설기업이 현장에서 채택하고 있는 원가초과 억제 방안의 현황을 분석하고 주요 특징 및 시사점을 제시하는 데 있다. IPA 분석 결과, 종합건설사 실무자들은 원가초과에 대한 관심과 노력 수준은 높지만 그 성과는 상대적으로 낮은 것으로 나타났다. 그럼에도 불구하고 대체적으로 원가초과를 억제하기 위해 중요하다고 생각하는 방안은 실행도 또한 높은 경향을 보이고 있었다. 중요도가 높지만 실행도가 낮게 나타나는 원가초과 억제 방안은 주로 협력 및 의사소통 부문에 속해있으며 원가초과의 억제를 위해서는 감리자/CM, 본사, 인허가 기관과의 협력 및 의사소통을 강화하는 것이 가장 시급한 것으로 나타났다. 본 연구를 통해 건설기업의 원가초과 억제 방안에 대한 현황과 개선점을 파악할 수 있으며, 이는 향후 원가초과 억제 전략 마련을 위한 방향성과 개선사항을 도출하는데 유용하게 활용될 수 있다.

• ETRI Journal
• /
• 제9권3호
• /
• pp.139-156
• /
• 1987

The problems in software cost management are well known. Cost estimates are too low. Software development projects frequently have cost overruns, which are due to poor estimates. A fair amount of work have been done toward developing cost estimation models. These models vary in their outputs (e. g., total cost, manning schedule) and in the factors used to calculate their estimates. They also vary with regard to the type of formula, parameters, use of previous data, and staffing considerations. This paper will distinguish them by the type of formula they use to calculate total effort and staffing level, and will discuss enough models to demonstrate the characteristics of each model category.

• 국제학술발표논문집
• /
• The 5th International Conference on Construction Engineering and Project Management
• /
• pp.36-41
• /
• 2013

With the increased interest in green buildings, the building industry has been experiencing a fast-growing demand for LEED (Leadership in Energy and Environmental Design) certification for the last decade. Still, it is not unusual to see various barriers and issues during its implementation, and experience tells that they can result in harming the overall project performance with reworks, lower productivity, schedule delays, and cost overruns. In order to better understand the industry's observation on issues and their consequences during LEED implementation, we distributed an online survey, and a total of 53 responses were received. The survey results indicate that (1) both designers and non-designers (e.g., contractors) select 'added costs to design and construction' as the biggest barrier; (2) both designers and non-designers select 'decision made too late in the design process' as the most frequently observed issue; and (3) non-designers indicate higher perceived severity in every consequence criteria than designers. The statistical analyses reveal that cost overruns are the most severe impact observed and have a statistically significant relationship with responses in regard to the barrier to LEED implementation.

• 국제학술발표논문집
• /
• The 9th International Conference on Construction Engineering and Project Management
• /
• pp.1240-1240
• /
• 2022

Construction projects are fraught with risks from cost or other overruns to accidents along with other issues. This is true whether the relevant organization is an owner, general contractor, CM, specialty-trade contractor, or other entity. When cost issues or other issues confront arise, how should an organization proceed whether attempting to gain additional compensation in terms of cost/other damages or protecting the same against such claims if they do not appear to be warranted? Enter construction cost forensics. This presentation will focus on strategies/techniques with construction cost forensics in these areas in order to be successful. Covered techniques include those to develop and analyze claims including fundamental construction cost analysis techniques. When an unexpected event disrupts a construction project, using sound analytical methods to identify the cause and quantify the extent of the issue will be important for negotiating a fair result or for obtaining a successful outcome in arbitration or litigation. Key examples of uncovering issues via construction cost forensics will be covered in this presentation.

• Architectural research
• /
• 제16권2호
• /
• pp.75-80
• /
• 2014

Risks, uncertainties, and associated cost overruns are critical problems for construction projects. Cost contingency is an important funding source for these unforeseen events and is included in the base estimate to help perform financially successful projects. In order to predict more accurate contingency, many empirical models using regression analysis and artificial neural network method have been proposed and showed its viability to minimize prediction errors. However, categorical factors on contingency cannot have been treated and thus considered in these empirical models since those models are able to treat only numerical factors. This paper identified potential factors on contingency in transportation construction projects and evaluated categorical factors using the one-way ANOVA statistical method. Among factors including project work type, delivery method type, contract agreement type, bid award type, letting type, and geographical location, two factors of project work type and contract agreement type were found to be statistically important on allocating cost contingency.

• 한국건설관리학회논문집
• /
• 제18권3호
• /
• pp.105-116
• /
• 2017

최근 국내 대형건설기업은 해외사업에서 큰 손실이 발생하였으며 이러한 손실의 중요한 원인은 저가수주 및 수행역량 때문이었다는 의견이 많았다. 하지만, 원가상승의 원인을 실제사례를 기반으로 실증적으로 검증한 연구는 없었다. 본 연구에서는 13개 대형건설회사에 수행한 67개 해외토목 원도급 사업에 대해, 원가상승률, 예비비, 견적의 여유분, 입찰 전 리스크, 수주 후 발생한 리스크, 수주 후 원가에 영향을 미친 리스크 등을 조사하였다. 이를 바탕으로 본 연구에서 다음과 같은 결론을 얻었다. 첫째, 원가가 상승한 프로젝트는 입찰 전에도 어느 정도 리스크를 인식하고 있었으나 예비비나 견적에 반영된 리스크 금액이 충분하지 못했다. 특히, 원가가 크게 증가한 프로젝트 일수록 이러한 현상이 심하게 나타났다. 둘째, 원가상승의 원인은 내부역량 리스크보다는 외부환경 리스크에 의한 영향이 컸다. 하지만, 원가상승이 컸던 프로젝트에서는 내부역량 리스크도 상대적으로 크게 평가되었다. 셋째, 원가가 증가한 프로젝트들은 리스크 대응 성과가 좋지 않았지만, 원가가 감소한 프로젝트들은 리스크 대응도 중요하지만 입찰 전부터 리스크가 적었던 것으로 분석되었다. 본 연구는 해외건설사업이 보다 나은 원가관리를 위해서, 입찰 전의 리스크 평가와 견적, 수주 후의 리스크 대응에 대해 기초적인 정보를 제공한다.

• 무역상무연구
• /
• 제35권
• /
• pp.179-219
• /
• 2007

Cross-border supply chains undergone complexity in the global trade process, unpredictability and continually evolving regulations and information requirements. Under these circumstances, longer lead time inhibiting quick response to market demands, unanticipated supply chain costs eroding product cost savings, compliance and documentation errors causing delays and fines are challenging global trade companies when they execute global business. These problems are mainly caused by unautomated, unintegrated process which lead to longer and more unpredictable lead times, slower cash flow, cost overruns, and ultimately lower profits and less satisfied customers. Complex and unpredictable global trade environment requires global trade companies of global trade management functions to automate and control this complex environment for driving out cost, time and risk from their business. Global trade management allows cost savings, supply chain efficiencies and improved compliance through improving global supply chain visibility, facilitating cash flow by supply chain financing, enhancing supply chain security and risk management.