EN 335:2013

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Use classes: application to wood and wood-based
  products
Annex A (informative) - Service classes according
        to EN 1995-1-1
Annex B (informative) - Additional information for
        the assignment of use classes
Annex C (informative) - Information on biological
        agents
Bibliography

This European Standard is applicable to solid wood and wood-based products.This European Standard defines five use classes that represent different service situations to which wood and wood-based products can be exposed. This standard also indicates the biological agents relevant to each situation.A use class is not a performance class and does not give guidance for how long wood and wood-based product will last in service.