NEN EN 338 : 2016

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Classification of structural timber
6 Allocation of a timber population to a strength class
  6.1 Grading
      6.1.1 Visually graded timber
      6.1.2 Machine graded timber
  6.2 Classification
      6.2.1 Characteristic values
      6.2.2 Allocation to a strength class
Annex A (informative) Equations for characteristics values
Bibliography

Defines a system of strength classes for general use in design codes. Also provides characteristic strength and stiffness properties and density values for each class to which EN 14081-1 refers. Pertains to all softwood and hardwood timber for structural use, within the scope of EN 14081-1.