Illustration of the Proposed Methodology Based on a Real Case-Study

This chapter aims to apply the recommendations of RILEM TC 249-ISC on a real structure, a four-level reinforced concrete framed structure. The flow chart describing the methodology proposed in the recommendations is applied and each stage is detailed. The proposed procedure is compared to the usual practices. The application of the new procedure proposed in the recommendations does not induce significant difficulties compared to usual ones. It is demonstrated that this new procedure can provide mean strength and local strength by saving a significant number of cores. The concrete variability is assessed with a higher reliability compared to usual practices. The unavailability of the test result precision (TRP) in the case study is discussed and its influence on the prediction error is quantified. The definition of test regions by using NDT methods is also proposed. The relevance of test region identification is analysed in relation with the identification of the conversion models. In particular, the possibility to identify either a unique conversion model for all the test regions or a specific model for each test region is discussed.