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dc.contributor.authorLove, P.E.D.*
dc.contributor.authorSing, C-P.*
dc.contributor.authorWang, X.*
dc.contributor.authorIrani, Zahir*
dc.contributor.authorThwala, D.W.*
dc.date.accessioned2017-12-06T14:25:35Z
dc.date.available2017-12-06T14:25:35Z
dc.date.issued2014
dc.identifier.citationLove PED, Sing C-P, Wang X et al (2014) Overruns in transportation infrastructure projects. Structure and Infrastructure Engineering. 10(2): 141-159.en_US
dc.identifier.urihttp://hdl.handle.net/10454/14084
dc.descriptionNo
dc.description.abstractTransportation infrastructure projects are prone to cost and schedule overruns. At the time of contract award, a construction contingency budget is often used to accommodate for unplanned events such as scope changes. Recent empirical research has shown that rework during construction as a result of design changes, errors and omission are the major contributors of overruns in projects. The statistical characteristics of rework, and cost and schedule overruns that are experienced from a project's contract award for 58 Australian transportation infrastructure projects are analysed. Theoretical probability distributions are fitted to the rework, cost and schedule overrun data. Goodness of fit tests are used in conjunction with probability-probability (P-P) plots to compare the sample distribution from the known theoretical distribution. A Generalised Logistic probability density function is found to describe the behaviour of cost-overruns and provides the best overall distribution fit. The best fitting distribution for schedule overruns and rework data were the Four Parameter Burr and a Johnson SB distribution, respectively. The distributions are used to calculate the probability of rework, cost and schedule overruns being experienced. A case illustration is presented and discussed to demonstrate how the derived probabilities may be utilised in practice.en_US
dc.language.isoenen_US
dc.subjectDistribution fitting
dc.subjectProbability
dc.subjectOverrun
dc.subjectRework
dc.subjectTransportation infrastructure
dc.titleOverruns in transportation infrastructure projectsen_US
dc.status.refereedYes
dc.date.Accepted12/04/2012
dc.date.application23/08/2012
dc.typeArticle
dc.type.versionNo full-text in the repository
dc.identifier.doihttps://doi.org/10.1080/15732479.2012.715173
dc.openaccess.statusclosedAccess


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