Comparison of Cost and Time Performance of Design-Build and Design-Bid-Build Delivery Systems in Florida
Publication: Journal of Construction Engineering and Management
Volume 139, Issue 10
Abstract
The choice of construction delivery system is one of the most important decisions that a public highway agency will make with regard to a highway, bridge, or transit construction project. Although several research projects have been conducted on the subject of comparing costs and project duration, there has been no study that statistically analyzes these factors specifically for transportation projects, much less one that eliminates the largest variable of all: different public agencies. The objective of the research reported in this paper was to determine which of two delivery methods, design-bid-build (DBB) and design-build (DB), delivers highway and bridge construction projects at the lowest cost and in the shortest time period, and to back up the findings with a rigorous statistical analysis of the data. Data were taken from the databases of the Florida Department of Transportation (FDOT) and arithmetically and statistically compared through Levene’s test, the independent samples t-test, the Welch unequal variances t-test, and the Mann-Whitney test. In fact, this paper’s unique contribution is its rigorous statistical analysis of data gathered directly from FDOT, comparing the performance of the two delivery systems in Florida over a finite period of time. In this comparison, DBB projects performed significantly better in terms of cost according to all statistical and arithmetic tests. DBB projects did not compare as favorably in terms of duration. Some tests showed a statistically insignificant advantage to the use of DB over DBB, whereas other tests showed no difference between the two. Other public agencies can replicate the research and determine whether the same findings hold true in their situation.
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References
Chan, A. P., Scott, D., and Lam, E. (2002). “Framework of success criteria for design/build projects.” J. Manage. Eng., 18(3), 120–128.
El Wardani, M., Messner, J., and Horman, M. (2006). “Comparing procurement methods for design-build projects.” J. Constr. Eng. Manage., 132(3), 230–238.
Gransberg, D. D., Datin, J., and Molenaar, K. (2008). NCHRP synthesis 376: Quality assurance in design-build projects, Transportation Research Board of the National Academics, Washington, DC.
Gransberg, D. D., and Senadheera, S. P. (1999). “Design-build contract award methods for transportation projects.” J. Transp. Eng., 125(6), 565–567.
Gransberg, D. D., and Windel, E. (2008). “Communicating design quality requirements for public sector design/build projects.” J. Manage. Eng., 24(2), 105–110.
Hale, D., Shrestha, P., Gibson, G., and Migliaccio, G. (2009). “Empirical comparison of design/build and design/bid/build project delivery methods.” J. Constr. Eng. Manage., 135(7), 579–587.
Ibbs, C., Kwak, Y., Ng, T., and Odabasi, A. (2003). “Project delivery systems and project change: Quantitative analysis.” J. Constr. Eng. Manage., 129(4), 382–387.
Konchar, M., and Sanvido, V. (1998). “Comparison of US project delivery systems.” J. Constr. Eng. Manage., 124(6), 435–444.
Molenaar, K. R., Songer, A., and Barash, M. (1999). “Public-sector design/build evolution and performance.” J. Manage. Eng., 15(2), 54–62.
Molenaar, K. R., and Songer, A. D. (1998). “Model for public sector design-build project selection.” J. Constr. Eng. Manage., 124(6), 467–479.
Pallant, J. F. (2011). SPSS survival manual, 4th Ed., McGraw-Hill, New York.
Ruxton, G. D. (2006). “The unequal variance t-test is an underused alternative to Student’s t-test and the Mann–Whitney test.” Behav. Ecol., 17(4), 688–690.
Scott, S., III (2006). “Best-value procurement methods for highway construction projects.”, Transportation Research Board of the National Academies, Washington, DC.
Shr, J. F., and Chen, W. T. (2004). “Setting maximum incentive for incentive/disincentive contracts for highway projects.” J. Constr. Eng. Manage., 130(1), 84–93.
Songer, A. D., and Molenaar, K. R. (1997). “Project characteristics for successful public-sector design-build.” J. Constr. Eng. Manage., 123(1), 34–40.
SPSS version 21 [Computer software]. IBM Corporation, Armonk, NY.
Touran, A., Molenaar, K. R., Gransberg, D. D., and Ghavamifar, K. (2009). “Decision support system for selection of project delivery method in transit.” Transportation Research Record 2111, Transportation Research Board, Washington, DC, 148–157.
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© 2013 American Society of Civil Engineers.
History
Received: Jul 24, 2012
Accepted: May 29, 2013
Published online: Jun 1, 2013
Published in print: Oct 1, 2013
Discussion open until: Dec 23, 2013
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