Cover image for Profilograph limitations, correlations, and calibration criteria for effective performance-based specifications.
Profilograph limitations, correlations, and calibration criteria for effective performance-based specifications.
Title:
Profilograph limitations, correlations, and calibration criteria for effective performance-based specifications.
Author:
National Cooperative Highway Research Program.
Publication Information:
[Washington, D.C.? : National Cooperative Highway Research Program?, 1992?]
Physical Description:
1 v. (various pagings) : ill. ; 28 cm.
General Note:
Cover title.

At head of title: NCHRP project 20-7, task 53.
Contents:
Introduction -- Development of profilograph test equipment -- Development of California test specification 526 -- Equipment factors affecting measurement -- Operational factors affecting measurement -- Trace reduction factors affecting measurement -- Digital signal processing -- Automated profilograph description and operation -- Profilograph comparisons -- Equipment variability studies -- Trace reduction variability -- Blanking band comparisons -- Correlation of profilographs to other roughness measurements -- Correlation of profile ride index to present -- Trace reduction process improvement studies -- Alternative methods of roughness measurement -- 1992 state survey results -- Discussion of results -- Recommended research / operational considerations -- Appendices.
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