Influence of Risk and Change Events on Cost, Schedule, and Predictability Performances

David Grau Torrent, Edward Back, Nahid Hossain

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


The occurrence of events affecting project performance cannot likely be eliminated, and hence their early identification and communication become critical to efficiently mitigate their impact. This research devised a taxonomy for the classification of events that can influence a project with 36 event types grouped in 10 event categories. The frequency of occurrence of events, and their impact on cost, schedule, and predictability performances were statistically determined based on information gathered from 135 recently completed projects. The statistical results demonstrate and quantify the long-held perception that the frequency of an event is often inversely proportional to its impact on project performance. In addition, qualitative evidence collected from subject-matter experts was leveraged to provide complementary insights and explanations beyond the statistical results. The results of this study are of interest to both practitioners and academics.

Original languageEnglish (US)
Article number04016006
JournalJournal of Professional Issues in Engineering Education and Practice
Issue number4
StatePublished - Oct 1 2016


  • Change management
  • Costs
  • Forecasting
  • Predictions
  • Risk management
  • Scheduling

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Industrial relations
  • Strategy and Management


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