ABSTRACT
Managers of ageing road networks are confronted with the pragmatic question where to intervene on the bearing capacity of the lower layers of the road structure in the forthcoming years. The answer can be sought on network level based on structural indicators, and on project level based on deeper analysis methods such as back-calculation of elasticity moduli. The answer should be independent of the device used for deflection measurements. In this contribution the reproducibility of the answer to this pragmatic question is discussed, illustrated by three case studies. Raw data and structural indicators for network analysis defined in a previous publication are compared. The usefulness of the determination of homogeneous segments and of reporting structural indicator values per homogeneous segment or by blocks of constant length for analysis on project level and for network analysis with a Pavement Management System (PMS) is discussed.
