The recommended procedure is that a statistical analysis of profile data be used to establish a roughness criterion. This implies that aircraft-vibration-response data need not be considered in establishing roughness criteria, even though these data can provide supporting evidence of the degree of roughness. Hence, the aircraft itself is not a factor in the recommended approach. The statistical analysis of profile-elevation data is possible if the data are filtered to remove the elevation trends that are formed by long wavelengths. A profile can then be rated according to its overall and its detailed roughness properties. The standard deviation of displacement (sigma) is recommended as an overall index, and the standard deviations of the slopes and the slope changes might be considered as detailed indexes (extremal analysis). The detailed roughness properties are necessary because a profile may be generally smooth, yet have a few severe bumps. The statistical approach discussed here addresses only the determination of the standard deviation of displacement as an overall index; additional work is recommended. Finally, when all known indexes are extracted for the profile data, each should be correlated with subjective pilot ratings, and those showing the strongest agreement should be emphasized. /Author/

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    • This paper appeared in TRB Special Report 175, Research in Airport Pavements. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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  • Authors:
    • Sonnenburg, Paul N
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  • Publication Date: 1978

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  • Media Type: Print
  • Features: Tables;
  • Pagination: pp 96-97
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  • Accession Number: 00189941
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: May 11 1979 12:00AM