Statistical properties of the NDS Supplement values - Codes and Standards https://timberengineering.org/community/codes-and-standards/statistical-properties-of-the-nds-supplement-values/ Timber Engineering Discussion Board en-US Fri, 17 Apr 2026 18:37:25 +0000 wpForo 60 Statistical properties of the NDS Supplement values https://timberengineering.org/community/codes-and-standards/statistical-properties-of-the-nds-supplement-values/#post-200 Thu, 06 Mar 2025 15:51:50 +0000 When I study EuroCode, it is quite clear that EN1990 requires an explicit probability of exceedance value for strength of the material listed. If memory serves it is set at 5% (5th percentile) for characteristic values, which means if you pick up a wood and test it, there is 95% chance your test value will be higher than what is used in design (so design is conservative).

Do we know what is the statistical information on the values listed in NDS with regard to testing results? @drammer  

]]> Codes and Standards Shiling Pei https://timberengineering.org/community/codes-and-standards/statistical-properties-of-the-nds-supplement-values/#post-200