Accuracy analysis of selected tools for estimating contract time on highway construction projects

Timothy R.B. Taylor, Michael Brockman, Dong Zhai, Paul M. Goodrum, Roy Sturgill

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

In many highway construction projects, the time available to complete construction is set by the contract documents. Most transportation agencies have developed tools to assist project planners in estimating the amount of time required to complete the project but how accurate are these systems in estimating project duration? The current work examines the accuracy of integrated scheduling systems from two state transportation agencies in estimating contract time for previously completed Kentucky highway construction projects. The accuracy of the systems where tested against project data from 66 completed Kentucky Transportation Cabinet Projects. The analysis revealed that the average accuracy of both systems in predicting project duration was greater than +200% across a variety of projects. A pilot study of the use of multivariate regression analysis of the data from 66 completed Kentucky Transportation Cabinet projects was performed to identify specific combinations of work item quantities with the engineer's cost estimate that produce the most accurate estimate of project duration. The accuracy of the developed regression equation in predicting highway construction project duration was +25%. The current work contributes improved understanding of the accuracy of integrate scheduling systems in predicting highway construction duration.

Original languageEnglish
Title of host publicationConstruction Research Congress 2012
Subtitle of host publicationConstruction Challenges in a Flat World, Proceedings of the 2012 Construction Research Congress
Pages217-225
Number of pages9
DOIs
StatePublished - 2012
EventConstruction Research Congress 2012: Construction Challenges in a Flat World - West Lafayette, IN, United States
Duration: May 21 2012May 23 2012

Publication series

NameConstruction Research Congress 2012: Construction Challenges in a Flat World, Proceedings of the 2012 Construction Research Congress

Conference

ConferenceConstruction Research Congress 2012: Construction Challenges in a Flat World
Country/TerritoryUnited States
CityWest Lafayette, IN
Period5/21/125/23/12

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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