The prediction of construction time performance is a problem of interest to both researchers and construction industry practitioners. This research seeks to identify significant factors which may influence construction durations for Air Force Military Construction (MILCON) projects to establish a time prediction model. Data were collected for 856 MILCON projects completed between 1988 and 2004; this included both traditional facility and non-facility {e.g. airfield pavements, utilities) projects. These data were analyzed using Bromilow's time-cost (BTC) model {1%9) as well as multiple linear regression. Neither model produced acceptable results for non-facility projects; however, the multiple linear regression model was found to provide the most acceptable time prediction model for facility projects.nAs with the BTC model and previous research reported in the literature, there was a significant con-elation between cost and duration. However several other factors were also identified that resulted in significantly lower than average construction durations. These include projects completed within certain management groupings (referred to as Major Commands in the Air Force), projects where the Northwestern Army Corps of Engineers served as the construction agent, and projects completed using in-house design services.
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