ADOPTED_FROM:EN 1611-1:1999 This European Standard defines appearance grades for European spruces, firs, pines and douglas firs. This standard applies to dry and green sawn timber. This standard does not apply to the strength grading of structural timber.
NS-EN 1611-1:1999 history
2002NS-EN 1611-1:1999+A1:2002 Sawn timber — Appearance grading of softwoods — Part 1: European spruces, firs, pines, Douglas fir and larches
2000NS-EN 1611-1:1999 Sawn timber — Appearance grading of softwoods — Part 1: European spruces, firs, pines and Douglas firs