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Rut depth measurement method and analysis at the FAA's National Airport Pavement Test Facility
The FAA developed and modified a truss profiler, which is independent of pavement profiles, that is used to monitor rutting of flexible pavements at the National Airport PavementTest Facility (NAPTF). The truss profilerwas developed to replace the more labor-intensive and time-consuming straightedge measurements. Transverse profiles corresponding to the cumulative number of load repetitions applied during traffic tests were measured using a laser displacement sensor mounted and running on a customized 20m (66 ft.)-long aluminum truss. The profiler is capable of measuring ruts caused by 10-wheel aircraft gear configurations having dualwheel
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