Evenness Measurements with the Pavement-Scanner
- Longitudinal evenness in accordance with the HRM method
In the HRM procedure (High Speed Road Monitoring) three laser distance sensors are used for long and short wavelengths of the road unevenness and altogether four laser sensors are used [see report on research project FE 04.0213/2008/DGB].
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Longitudinal evenness for determination of the International Roughness Index (IRI)
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Transverse evenness with the PPS +
Evenness measurements on roads by means of levelling board
To test for unevenness, the levelling board is set up on the pavement surface. The unevenness is determined as deviations between the lower edge of the board (measuring edge) and the surface of the layer by pushing a measuring wedge underneath. The further the measuring wedge can be pushed under the levelling board, the greater the unevenness at this point. The associated set of rules can be found in the TP Eben - Touching Measurements.
Contact
Mailing Address:
University of Wuppertal
School of Architecture and Civil Engineering
Pavement Research Center
Pauluskirchstraße 7
42285 Wuppertal
Tel.: +49 202 439-4311
Fax: +49 202 439-4248
psivapatham[at]uni-wuppertal.de
Visiting Address:
Pauluskirchstraße 11
Building HF / Level 1 / Room 11
42285 Wuppertal
