Europäische Baunormen im Test – Charakteristische Werte nach DIN EN 1990, DIN EN 1926 und DIN EN 13162

European Structural Standards under test – characteristic values according to DIN EN 1990, DIN EN 1926 and DIN EN 13162 The determination of nominal value is the starting point for the calculation of the design value. An analysis shows that the required reliability in DIN EN 1990 is not always guaranteed: – application of quantile factors for a confidence level P = 1 – α = 0,50 of assessment via the characteristic value (ENDIN 1990) – use of quantile factors of normal distribution in case of logarithm normal distribution for a confidence level P = 1 – α ≠ 0,50 (ENDIN 1990) – direct assessment of the design value on the basis of a sample size of n = 4, 5, 6, … for a 99,9%‐quantile (EN DIN 1990) – checking whether the underlying distribution and the measure results are in agreement (ENDIN 1926) – estimation of the quantile of the thermal conductivity λ_90/90 from the quantile of the thermal transmission resistance R_10/90 and vice versa (EN DIN 13162). There is a need for consistency between the harmonized European Standards and the technical rules of DIN EN 1990. Therefore, this paper will give recommendations for required corrections.