Probabilistic Duration Estimation Model for High-Rise Structural Work
Publication: Journal of Construction Engineering and Management
Volume 135, Issue 12
Abstract
The duration of a construction project is a key factor to consider before starting a new project, as it can determine project success or failure. Despite the high level of uncertainty and risk involved in construction, current construction planning relies on traditional deterministic scheduling methods that cannot clearly ascertain the level of uncertainty involved in a project. This, subsequently, can prolong a project’s duration, particularly when that project is high-rise structural work, which is not yet a common project type in Korea. Indeed, among construction processes, structural work is notable, as it is basically performed outdoors. Thus, no matter how precisely a schedule is developed, such projects can easily fail due to unexpected events that are beyond the planner’s control, such as changes in weather conditions. Therefore, in this study, to cope with the uncertainties involved in high-rise building projects, a probabilistic duration estimation model is developed in which both weather conditions and work cycle time for unit work are considered to predict structural work duration. According to the proposed estimation model, weather variables are divided into two types: weather conditions that result in nonworking days and weather conditions that result in work productivity rate (WPR) change. Obtained from actual previous data, the WPR is used with relevant nonworking day weather conditions to modify the actual number of working days per calendar days. Furthermore, on the basis of previous research results, the cycle time of the unit work area is assumed to follow the probability distribution function. Thus, the probabilistic duration model is valid for 95% probability. Finally, a case study is conducted that confirms the model can be practically used to estimate more reliable and applicable probabilistic durations of structural work. Indeed, this model can assist schedulers and site workers by alerting them, at the beginning of a project, to project uncertainties that specifically pertain to structural work and the weather. Thus, the proposed model can enable personnel to easily amend, and increase the reliability of, the construction schedule at hand.
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Acknowledgments
The writers acknowledge the support of the Korean Ministry of Construction and Transportation, through the Research Project No. UNSPECIFIED05 CIT D05-01.
References
AbouRizk, S. M., and Halpin, D. W. (1992). “Statistical properties of construction duration data.” J. Constr. Eng. Manage., 118(3), 525–543.
AbouRizk, S. M., Halpin, D. W., and Wilson, J. R. (1991). “Visual interactive fitting of beta distributions.” J. Constr. Eng. Manage., 117(4), 589–605.
AbouRizk, S. M., Halpin, D. W., and Wilson, J. R. (1994). “Fitting beta distributions based on sample data.” J. Constr. Eng. Manage., 120(2), 288–305.
AbouRizk, S. M., and Wales, R. J. (1997). “Combined discrete-event/continuous simulation for project planning.” J. Constr. Eng. Manage., 123(1), 11–20.
Ahuja, H. N., and Nandakumar, V. (1985). “Simulation model to forecast project completion time.” J. Constr. Eng. Manage., 111(4), 325–342.
Alpert, M., and Raiffa, H. (1969). “A progress report on the training of probability assessors.” Judgement under uncertainty: Heuristics and biases, Cambridge University Press, Cambridge, U.K., 294–305.
Carr, R. I. (1979). “Simulation of construction project duration.” J. Constr. Div., 105(CO2), 117–128.
Chehayeb, N. N., and AbouRizk, S. M. (1998). “Simulation-based scheduling with continuous activity relationships.” J. Constr. Eng. Manage., 124(2), 107–115.
Clemmens, J. P., and Willenbrock, J. H. (1978). “The SCRAPESIM computer simulation.” J. Constr. Eng. Manage., 104(4), 419–435.
Farid, F., and Koning, T. L. (1994). “Simulation verifies queuing program for selecting loader-truck fleets.” J. Constr. Eng. Manage., 120(2), 386–404.
Fente, J., Schexnayder, C., and Knutson, K. (2000). “Defining a probability distribution function for construction simulation.” J. Constr. Eng. Manage., 126(3), 234–241.
Halpin, D. W. (1977). “CYCLONE—Method for modeling job site processes.” J. Constr. Div., 103(CO3), 489–499.
Kavanagh, D. P. (1985). “SIREN: A repetitive construction simulation model.” J. Constr. Eng. Manage., 111(3), 308–323.
Lee, D. E. (2005). “Probability of project completion using stochastic project scheduling simulation.” J. Constr. Eng. Manage., 131(3), 310–318.
Lichtenstein, S., Fischhoff, B., and Phillips, L. D. (1977). “Calibration of probabilities: The state of the art to 1980.” Judgement under uncertainty: Heuristics and biases, Cambridge University Press, Cambridge, U.K., 306–344.
Martinez, J. C., and Ioannou, P. G. (1999). “General-purpose systems for effective construction simulation.” J. Constr. Eng. Manage., 125(4), 265–276.
MacCrimmon, K. R., and Ryavec, C. A. (1964). “An analytical study of the PERT assumptions.” Oper. Res., 12(1), 12–37.
Paulson, B. C. (1978). “Interactive graphics for simulating construction operations.” J. Constr. Eng. Manage., 104(1), 69–76.
Schexnayder, C., Knutson, K., and Fente, J. (2005). “Describing abeta probability distribution function for construction simulation.” J. Constr. Eng. Manage., 131(2), 221–229.
Senior, B. A., and Halpin, D. W. (1998). “Simplified simulation system for construction projects.” J. Constr. Eng. Manage., 124(1), 72–81.
Shi, J. J. (1999). “Activity-based construction (ABC) modeling and simulation method.” J. Constr. Eng. Manage., 125(5), 354–360.
Swanson, L. A., and Pazer, H. L. (1971). “Implications of the underlying assumptions of PERT.” Decision Sci., 2, 461–480.
Wang, W. C., and Demsetz, L. A. (2000). “Model for evaluating networks under correlated uncertainty—NETCOR.” J. Constr. Eng. Manage., 126(6), 458–466.
Wilson, J. R., Vaughan, D. K., Naylor, E., and Voss, R. G. (1982). “Analysis of space shuttle ground operations.” Simulation, 38(6), 187–203.
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© 2009 ASCE.
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Received: Mar 10, 2008
Accepted: Jun 18, 2009
Published online: Jun 22, 2009
Published in print: Dec 2009
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