NBN EN 1316-1:2012

This European Standard specifies a qualitative classification and grade designations for felled round timber of oak and beech presented in the form of long poles or logs.
The classifications describe quality classes of round timbers for which the intended use is not known.
The classification applies for the following species: Oaks, Quercus sessiliflora SALISB. (or Quercus petraea LIEBL.), Quercus robur L. (or Quercus pedunculata EHRH.) and Beech (Fagus sylvatica L).