Change Orders and Lessons Learned: Knowledge from Statistical Analyses of Engineering Change Orders on Kentucky Highway Projects

2012 ◽  
Vol 138 (12) ◽  
pp. 1360-1369 ◽  
Author(s):  
Timothy R. B. Taylor ◽  
Moin Uddin ◽  
Paul M. Goodrum ◽  
Alex McCoy ◽  
Yongwei Shan
Keyword(s):  
Lessons Learned ◽  
Statistical Analyses ◽  
Highway Projects ◽  
Change Orders ◽  
Engineering Change

scholarly journals Comparison of DB to DBB on highway projects in Washington State, USA

2018 ◽  
Vol 8 (2) ◽  
pp. 73-86 ◽  
Author(s):  
George Okere ◽  
Keyword(s):  
Quantitative Methods ◽  
Washington State ◽  
The Body ◽  
Project Delivery ◽  
Delivery Methods ◽  
Highway Projects ◽  
Change Orders ◽  
Contract Duration ◽  
Comparative Results ◽  
Washington State Department

Comparative evaluations of design-build (DB), to design-bid-build (DBB), aredocumented in literature. However, a recent study suggests that even though several studies have been completed to compare DB and DBB, there are few statistically significant comparative results. Comparative analyses of highway projects of the same scope, size, and type could provide the basis to make the argument for the use of either DB or DBB on highway projects. The objective of this research is to compare DB to DBB on highway projects. The basis of comparison includes project cost, contract duration, number and type of contract change orders. Projects used for this research were obtained from the Washington State Department of Transportation (WSDOT). The projects were subsequently selected based on project scope,size, and type, and then analysed using quantitative methods. The research found that there is enough evidence to support the use of DB over DBB on highway projects. The findings of this study have significant implications for practitioners and policymakers on highway projects and should inform decisions on the choice of project delivery method. The main limitation of the research is that the study used only 14 projects due to the difficulty of finding matching projects,and as such the results could not be generalized. However, the findings add to the body of research on criteria for comparing DB to DBB. To enhance understanding of how project scope, size, and type might affect or be affected by project delivery methods,the research recommends the standardization of project types classification for highway projects

Systematic Decision Support for Engineering Change Management in PLM

2005 ◽  
Author(s):  
Nikhil Joshi ◽  
Farhad Ameri ◽  
Debasish Dutta
Keyword(s):  
Change Management ◽  
Lead Times ◽  
Change Orders ◽  
Engineering Change ◽  
Engineering Change Management ◽  
Industry Standard ◽  
Downstream Effects ◽  
Engineering Changes ◽  
Automated Tools ◽  
Change Requests

Engineering Change Management (ECM) is an important component of PLM. ECM modules in current PLM solutions conform to the industry-standard CMII closed-loop change model. They provide customised forms and pre-defined workflows for creating and processing change requests, change orders, etc. Evaluating the effects of the proposed Engineering Change on manufacturing processes, BOM, lead times, inventory, etc., usually form tasks in this generic workflow. However, each change has different downstream effects, which themselves lead to further changes that may not be evident. Identifying these impacts requires considerable experience and expertise. This paper addresses the need for automated tools to assist this process. The approach involves dynamic creation of workflow tasks for evaluating cascaded effects of any change using a predefined industry specific knowledge base. The process is further enhanced by prioritising the evaluation of effects based on experience generated by past engineering changes.

scholarly journals Simplifying Complexity-Again

2004 ◽  
Vol 126 (03) ◽  
pp. 43-45
Author(s):  
Alan S. Brown
Keyword(s):  
Business Processes ◽  
Product Lifecycle Management ◽  
The Other ◽  
Product Lifecycle ◽  
Change Orders ◽  
Engineering Change ◽  
Manual Intervention ◽  
Assembly Instructions ◽  
Technical Specifications ◽  
Lifecycle Management

This article focuses on the advantages of technology over manual intervention. Products are made to order in a process that spawns a stream of changes to CAD drawings, technical specifications, bills of materials, assembly instructions, and other documents. The secret of Swagelok’s success is workflow software, which helps automate and manage repetitive business processes, such as engineering change orders, document revision, review, and design release. It lets a computer automatically route drawings and documents to every person who needs them. Workflow software creates a single system for gathering all of the necessary history, measurements, and models. Swagelok and Evernham use workflow software to control and track the movement of information. Many larger companies, on the other hand, have used workflow software to move data automatically among applications. Such complex workflows are usually part of a larger product lifecycle management solution.

Administering Change Orders in Highway Projects

2022 ◽  
Vol 14 (2) ◽  
Author(s):  
Muaz O. Ahmed ◽  
Rayan H. Assaad ◽  
Islam H. El-adaway ◽  
Emily Echele ◽  
Kyle Govro ◽  
...  
Keyword(s):  
Highway Projects ◽  
Change Orders

Effect of change orders on rework in highway projects in Palestine

2017 ◽  
Vol 22 (1) ◽  
pp. 62-76 ◽  
Author(s):  
Ibrahim Mahamid
Keyword(s):  
Construction Projects ◽  
West Bank ◽  
Highway Construction ◽  
The West ◽  
Highway Projects ◽  
Change Orders ◽  
Content Type ◽  
Design Changes ◽  
Common Causes ◽  
The Impact

Purpose This study aims at identifying the main causes of change orders in highway construction projects, determining the factors that affect rework in highway construction projects, examining the relationship between change orders and rework and at developing a predictive model that will determine the impact of change orders on rework in highway construction projects in Palestine. Design/methodology/approach A questionnaire survey was used to identify the main change order causes and rework causes from the perspectives of contractors and consultants. The questionnaire contained 16 causes of change orders and 19 causes of rework which had been identified from the literature reviewed. The study also identifies the impact of change orders on rework based on data comprising 22 highway construction projects implemented in Palestine. Both descriptive and inferential statistics were used in analyzing the data. Findings The study concluded that the five most common causes of change orders can be identified as: change of project scope by owner (additional – enhancement), lack of coordination between construction parties; owner’s financial difficulties, change in materials, and errors and omissions in design. The study has also established that among the various factors that causes rework, non-conformance with specification requirements, scope changes, late design changes, lack of labor experience, lack of labor skills and improper subcontractor selection top the list. Using regression analysis, the results reveal a significant relationship between change orders and rework cost in highway construction projects in Palestine. Practical implications By ranking the various change orders causes and rework causes from the perspectives of consultants and contractors, the study provides a fresh perspective on an old chronic problem in the construction sector. This study has provided evidence on the most significant change orders causes and rework causes in the Palestinian highway construction, as well as the impact of change orders or rework on constructions sites. Finally, although this study is specific to the country of Palestine, its results can be applicable to other developing countries facing similar problems in their public construction sectors. Originality/value The results address the common causes of change orders and reworks in highway construction projects in Palestine. The results also address the relation between change orders and rework cost based on data collected from highway construction projects implemented in the West Bank in Palestine. This study is the first study conducted in the West Bank in Palestine to identify the change orders and reworks causes in highway construction projects.

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