This document specifies the mathematical processing of digitized longitudinal profile measurements to
produce evenness indices. The document describes the calculation procedure for the International
Roughness Index (IRI), Root Mean Square (RMS) and Longitudinal Profile Variance (LPV) from three
separate wavelength bands and the σWLP and ΔWLP from the Weighted Longitudinal Profile (WLP).
The purpose of this document is to provide a standard practice for calculating and reporting estimates
of road evenness from digitized longitudinal profiles. Other aims with this document are to facilitate the
comparison of evenness measurement results carried out with different profiling instruments in
European countries.
The evenness range covered in this document is defined as the wavelength range 0,5 m to 50 m. It is
noted that both shorter and longer wavelengths can also influence the driving comfort but those are not
covered in this document.
The quantified evenness indices derived from this document are useful support for pavement
management systems. The output can also be used for type approval and performance control of new
and old pavements. The indices can be used on rigid, flexible and gravel road surfaces.
This document doesn't define from what position on the road the longitudinal profile should be obtained.
The derived indices are portable in the sense that they can be obtained from longitudinal profiles
measured with a variety of instruments.
Cross References:EN 13036-6
ISO 8608
ANSI-S1-11:2004
All current amendments available at time of purchase are included with the purchase of this document. | File Size : | 1
file
, 1.5 MB |
| ISBN(s) : | 9780580980855 |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 56 |
| Product Code(s) : | 30358665, 30358665, 30358665 |
| Published : | 09/12/2019 |
