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dc.contributorVirginia Tech. Virginia Tech Transportation Instituteen_US
dc.contributorCalifornia Polytechnic State University, San Luis Obispo. Civil and Environmental Engineering Departmenten_US
dc.contributorDiefenderfer, Brianen_US
dc.contributor.authorAndrei, Dragosen_US
dc.date.accessioned2015-08-11T18:46:29Z
dc.date.available2015-08-11T18:46:29Z
dc.date.issued2015-06-04en_US
dc.identifier.citationAndrei, D. (2015, June). Prequalification criteria for pavement inspectors. Paper presented at the 9th International Conference on Managing Pavement Assets, Alexandria, VA. Presentation retrieved from www.apps.vtti.vt.edu/PDFs/icmpa9/session16/Andrei.pdfen_US
dc.identifier.urihttp://hdl.handle.net/10919/56411
dc.description.abstractThe Orange County Transportation Authority (OCTA) conducts periodic pre-qualification studies to evaluate the proficiency of pavement inspectors in performing pavement distress surveys per ASTM Standard D6433. The results of two such studies were used to evaluate the variability of reported PCI values and to establish qualification criteria for future prequalification efforts. A linear trend between the standard deviation of the reported PCI values and the average PCI was observed. Sections with a higher PCI (better condition) showed less variance than those with lower PCI values (worse condition). The linear relationship was used to normalize deviations from the baseline PCI and the root mean square error (RMSE) of the normal deviates was proposed for use as qualification criteria. In comparison with the original OCTA criteria, the RMSE of the normal deviates is a better measure of accuracy and precision and it is less dependent on the number of control sections used in the prequalification study.en_US
dc.format.extent11 pagesen_US
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_USen_US
dc.relation.ispartof9th International Conference on Managing Pavement Assetsen_US
dc.titlePrequalification Criteria for Pavement Inspectorsen_US
dc.typePresentationen_US
dc.description.notesPresented during Session 16: Data Quality, moderated by Gonzalo Rada, at the 9th International Conference on Managing Pavement Assets (ICMPA9) in Alexandria, VA.en_US
dc.description.notesIncludes conference paper and PowerPoint slides.en_US
dc.identifier.urlwww.apps.vtti.vt.edu/PDFs/icmpa9/session16/Andrei.pdfen_US
dc.date.accessed2015-07-07en_US
dc.type.dcmitypeTexten_US


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