Moselhi, O; Assem, I and El-Rayes, K (2005) Change orders impact on labor productivity. Journal of Construction Engineering and Management, 131(3), pp. 354-359. ISSN 0733-9364
Abstract
This paper describes a study conducted to investigate the impact of change orders on construction productivity and introduces a new neural network model for quantifying this impact. The study is based on a comprehensive literature review and a field investigation of projects constructed in Canada and the USA. The field investigation was carried out over a 6-month period and encompassed 33 actual cases of work packages and contracts. Factors contributing to the adverse effects of change orders on labor productivity are identified and a model presented earlier is expanded to account primarily for the timing of change orders, among other factors. The developed model, as well as four models developed by others, have been incorporated in a prototype software system to estimate the loss of labor productivity due to change orders. A numerical example is presented to demonstrate the use of the developed model, and illustrate its capabilities.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | change orders; claims; computer software; dispute resolution; neural networks; productivity |
| Index terms: | prototype, neural network, literature review, construction productivity, estimate, resolution, labour productivity, investigation, productivity, dispute, change order, Canada, package |
| Subjects: | dispute resolution, data collection methods, financial and cost management, contractual arrangements, data analysis and analytics, artificial intelligence, modelling and simulation, operations management, contractual condition, Geography, management, conflict resolution |
| Topics: | Procurement, Stakeholder Management, Research Practice, Geographical Context, Project Management, Engineering Principles, Business Strategy, Cost Management, Contract Administration, Site Management, Legal Issues, Digital Applications |
| Descriptive scope: | 3 PCA |
N.B. Descriptive scope is a count of how many of the five facets of empirical research are indicated by the words used in title, abstract and keywords. It is not intended as a judgement on the research; merely a count of the kind of word we would expect to indicate Phenomenon, Concepts, Theoretical framing, Empirical techniques, Analytical techniques. If all five are present, then a code of “5 PCTEA” will indicate this. If you feel the coding for this record is questionable, we welcome discussion around the terms we matched or the way we categorized them. The facet you would expect may not be coded, or a facet may be coded inappropriately. This can also bear on a larger question, of which facets should be treated as defining in construction management research. Please get in touch, and we will look at it. More details here