Quantitative Definition of Projects Impacted by Change Orders

Hanna, Awad S.; Camlic, Richard; Peterson, Pehr A.; Nordheim, Erik V.

doi:10.1061/(asce)0733-9364(2002)128:1(57)

Cited by 96 publications

(73 citation statements)

References 2 publications

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“…Their research investigated how change orders impact labor efficiency at the macro productivity level, determining and isolating specific measurable characteristics of projects that are impacted by cumulative change for electrical and mechanical projects. In addition, this study developed a quantitative model for detecting projects impacted by change orders [2,3], and a second model to predict the cumulative impact of project change [4].…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Development of automated change order impact detection and quantification system

Lee¹,

Ryoo²,

Sullivan³

et al. 2009

Automation in Construction

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Development of automated change order impact detection and quantification system

Lee¹,

Ryoo²,

Sullivan³

et al. 2009

Automation in Construction

Self Cite

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“…Thus, VOs can be caused by the consultant, the employer, or the contractor (Hanna, Calmic and Peterson, 2002). Therefore, VOs are common and are considered a normal part of a construction project (Arain and Low, 2005).…”

Section: Literature Reviewmentioning

confidence: 99%

Impact of Variation Orders on Time and Cost in Mega Hydropower Projects of Pakistan

Hanif¹,

Khurshid²,

Lindhard³

et al. 2016

JCDC

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Abstract:The occurrence of variation orders (VOs) in the construction industry is a regular trend all over the world. Hydropower projects are no exception, and it is difficult to find a hydropower project in Pakistan that does not experience VOs. The current research investigates the causes and impacts of VOs in mega hydropower projects using case studies of three mega hydropower projects in Pakistan. The results illustrate that errors and omissions in design, changes in scope and changes in design were among the three top contributing factors to VOs in hydropower projects that resulted in time and cost overruns. Because of VOs, the time overrun is 20%, and the cost overrun is 31% with respect to the planned time and cost of the project. Based on this research, the study recommends measures to curb the causes and impacts of VOs to optimise the construction process of mega hydropower projects.

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“…또한, 대부분의 건설프로젝트의 특성상 변경이 불가피한 경우가 많으며 [3] 전반적으로 발주자에게 변경관 리(Change Management)가 다루기 어려운 문제가 되는 어지지 않고 있어, 설계변경에 대한 정확한 이해와 효율적 인 관리가 요구되는 상황이라 할 수 있다 [8]. 또한, 현실적 으로 이러한 설계변경은 체계적인 처리절차의 부재, 계약규 정의 미비, 책임소재의 불명확성 등으로 인하여 발생과 처 리과정에서 부정과 의혹을 발생시키고 있을 뿐만 아니라 전 체사업비 증가의 주된 요인이 되고 있다 [9].…”

Section: 연구의 목적unclassified

Causes of Change Orders in the Military Facility Construction Projects and Suggestions for Improvement

Lee¹,

Choi²

2013

Journal of the Korea Institute of Building Construction

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Change orders have been widespread in both the private and public construction sectors. In particular, in the case of G2B (Government to Business) contracts, adjustment of contract price and/or schedule extension is a frequent occurrence due to change orders. To uncover the causes of change orders and suggest an appropriate strategy, this study analyzed 296 cases of change orders in military facility construction projects from 2008 to 2010. The analysis revealed that the major causes of change orders are users' additional requirements (28.38%), a change of finishing materials (23.99%), and change of footing type (17.57%), in that order. Building on the results of this analysis, the authors suggest plans for practical improvements. Specific recommendations include 1) reflect user requirements at the early stage, 2) minimize the use of additional budget due to change orders, and 3) reduce the process and time for contract amendment, among others. The results of this study may provide significant implications to those involved in military construction projects, particularly project owners (i.e., the Ministry of Defense) and contractors.

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Quantitative Definition of Projects Impacted by Change Orders

Cited by 96 publications

References 2 publications

RETRACTED: Development of automated change order impact detection and quantification system

RETRACTED: Development of automated change order impact detection and quantification system

Impact of Variation Orders on Time and Cost in Mega Hydropower Projects of Pakistan

Causes of Change Orders in the Military Facility Construction Projects and Suggestions for Improvement

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