Barros, Ricardo Primary Author mixed material bibliography TRB 1991 en English

Computer Software

p. 205-213 Trr No. 1311 Pavement Design, Management And Performance, pp.205-213 Composite indices provide a convenient means of standardizing the effects of incongruous parameters, such a those encountered in the management of pavement distress. With these indices the relative needs of one pavement can be compared with the needs of another even though they experience different distresses. This particular application often leads to a priority list for resource allocation. Composite index development is studied to learn the extent to which statistical analyses will support objectivity in the management of pavement distress. The major findings include the following. (a) The systemwide average composite index is an excellent estimator of the true value. (b) Composite indices are generally effective in sorting pavements according to their relative need. (c) On an individual section-by-section basis, composite indices do not and cannot reliably identify the upper population percentiles generally sought. Approximately one-third of the systemwide worst 20 percent may fail to be identified as such. (d) Relatively coarse increments of measurement can be used in multiple parameter indices with small practical effect on index efficiency, facilitating systemwide data collection. (e) Statistical analyses will indeed help -- but must not be allowed to hide -- the extremely subjective process of composite index development. PAVEMENT DISTRESS 006:656.021 Perpustakaan Direktorat Bina Teknik Jalan dan Jembatan Direktorat Jenderal Bina Marga - Kementerian Pekerjaan Umum (NPP: 3273244A00000001) 0000004200 My Library 3976 machine generated