O'Connor, J T and Huh, Y (2006) Crew production rates for contract time estimation: Beam erection, deck, and rail of highway bridges. Journal of Construction Engineering and Management, 132(4), pp. 408-415. ISSN 0733-9364
Abstract
Both the importance and process of estimating highway construction time have increased in significance as roadway user costs themselves have become more significant. In estimating construction time, few parameters are more significant than work item crew production rates and factors significantly affecting those rates. A standardized data collection tool was used to acquire a total of 67 data points from 25 ongoing Texas highway projects between February 2002 and May 2004, for three selected critical work items: beam erection, bridge deck, and bridge rail. With the data, several hypothesized drivers of the crew production rates were analyzed. While the factor of shape of deck (straight versus curved) was identified as a statistically significant driver of bridge deck crew production rate, no statistically significant drivers were found for work items of beam erection and bridge rail. The study also found that both formwork and rebarwork crew sizes have significant relationships with bridge deck production rate. Findings from this study will enable highway agencies to enhance accuracy of contract time estimation for highway bridge construction. The methodology for obtaining field-based production rates will also be beneficial for future researchers.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | bridge construction; bridges; contracts; estimation; highway; productivity; quantitative analysis; Texas |
| Index terms: | estimation, productivity, formwork, construction time, highway construction, beam, accuracy, time estimation, estimating, bridge construction, agency, quantitative analysis, methodology |
| Subjects: | operations research, data analysis and analytics, financial and cost management, management, structural engineering, research methods, civil engineering, professional development, infrastructure engineering, project controls, building construction, sociology |
| Topics: | Time Control, Cost Management, Business Strategy, Engineering Principles, Information Management, Research Practice, Construction Technology |
| Descriptive scope: | 3 PCT |
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