BS EN 14358:2016

European foreword
1 Scope
2 Symbols
3 Calculation of characteristic properties from test
  results in the frame of initial type testing
4 Calculation of characteristic properties from test
  results in the frame of internal factory production
  control
5 Acceptance procedure for verification of a lot
Bibliography

Provides statistical methods for the determination of characteristic values from test results on a sample drawn from a clearly defined reference population of e.g. solid wood, fasteners, connectors and wood-based products.

This Parametric methods are given for the determination of lower and upper 5-percentiles. The upper 5-percentile is the 95-percentile. This standard is suitable for use with any structural product in the frame of type testing as well as factory production control. Sampling is not covered by this document, but reference is made to the relevant product standards. This standard also provides the acceptance procedure for verification of a lot. Depending on the product, characteristic values determined in accordance with this standard may be used directly or may need additional adjustments specified in the relevant product standards. NOTE: For example, in the case of solid timber, specific adjustment factors for calculation of characteristic values are given in EN384 .