Measuring, Characterizing, and Reporting Pavement Roughness of Low-Speed and Urban Roads (2019) / Chapter Skim
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Pages 80-84
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80 This attachment describes proposed changes to three AASHTO specifications: • ASHTO M 328-14 Standard Equipment Specification for Inertial Profiler • AASHTO R 56-14 Certification of Inertial Profiling Systems • AASHTO R 57-14 Operating Inertial Profiling Systems These proposed changes to AASHTO M328-14, R56-14, and R57-14 are the suggestions of the NCHRP Project 10-93 staff. These specifications have not been approved by NCHRP or any AASHTO committee nor formally accepted for the AASHTO specifications.
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81 shorter than 0.5 ft is recommended beyond that which is necessary to avoid aliasing errors. Section 5.1, with recommended additional text underlined: 5.1.
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82 The test software shall activate the testing using the timing and control parameters stored by the test control setup software. The software shall monitor the signals to verify that the testing is being performed properly and indicate detectable errors.
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83 8.2.5.3 Collect three repeat runs with the profiler at 45 mph. Evaluate the IRI-filtered repeatability cross-correlations among the runs and select a representative run.
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84 Recommended addition of the following paragraph to Section 5.3.2.4.1: 5.3.2.4.1 .
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