Eurocode 7 – Second generation: determination of representative values
Eurocode 7 – Second generation: determination of representative values
This paper explains the concepts behind the different terms involved in the determination of ground properties within the framework of the Second Generation Eurocode 7. The process begins with the derived values that are collected in the ground investigation activities: desk study, site inspection, design investigation and monitoring. It continues to the determination of the “representative value” that is the value that affects the occurrence of the limit state. This value is either used directly in Resistance Factor Approach (RFA) verifications or factored by the partial material factor to obtain the “design value” that will be used in Material Factor Approach (MFA) verifications of the different ultimate limit states of the geotechnical structures. The future Eurocode 7 establishes two possible ways to determine such a “representative value” of a ground property: selecting the value from a limited number of test results, based on engineering judgment and comparable experience in similar cases, being in this case termed a “nominal value”; or evaluating the value by statistical methods, being in this case termed a “characteristic value”. Additionally, the paper gives a brief outline of a statistical method to determine the characteristic value of a ground property that accounts for spatial variability.
Jose Estaire; Julia Sorgatz; Trevor L. L. Orr
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
C - Risk analysis and safety evaluation
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