Section Contents

Selecting the Right Standards for your Application

Codes of Practice

EN 1995-1-1 Eurocode 5: Design of timber structures – Part1-1: General – Common rules and rules for building
National Annexes to Eurocode 5 Each EU Member State publishes its own National Annex to Eurocode 5 to be used in conjunction with EN 1995-1-1.

Harmonised Standards

EN 13986 Wood-based panels for use in construction – Characteristics, evaluation of conformity and marking
EN 14374 Timber structures – Structural laminated veneer lumber

 Product Standards

EN 300 Oriented Strand Board (OSB) – Definitions, classification and specification
EN 636 Plywood – Specification
EN 14272 Laminated Veneer Lumber (LVL) – Definitions, classification and specification

 Sustainability

EN 15804 Sustainability of construction works – Environmental product declarations – Core rules for the product category of construction products

 Determination, Test & Calculation Methods

EN 310 Wood-based panels – Determination of modulus of elasticity in bending and of bending strength
EN 314-1 Plywood – Bond quality – Test methods
EN 314-2 Plywood – Bond quality – Requirements
EN 315 Plywood – Tolerances for dimensions
EN 317 Particleboard and fibreboards – Determination of swelling in thickness after immersion in water
EN 318 Wood-based panels – Determination of dimensional changes associated with changes in relative humidity
EN 319 Particleboard and fibreboards – Determination of tensile strength perpendicular to the plane of the board
EN 321 Wood-based panels – Determination of moisture resistance under cyclic test conditions
EN 322 Wood-based panels – Determination of moisture content
EN 323 Wood-based panels – Determination of density
EN 324-1 Wood-based panels – Determination of dimensions of boards – Determination of thickness, width and length
EN 324-2 Wood-based panels – Determination of dimensions of boards – Determination of squareness and edge straightness
EN 325 Wood-based panels – Determination of dimensions of test pieces
EN 326-1 Wood-based panels – Sampling, cutting and inspection –   Sampling and cutting of test pieces and expression of test results
EN 594 Timber structures – Test method – Racking strength and stiffness of timber frame wall panels
EN 596 Timber structures – Test method – Soft body impact test of timber framed walls
EN 789 Timber structures – Test methods – Determination of mechanical properties of wood-based panels
EN 1058 Wood-based panels – Determination of characteristic 5 percentile values and characteristic mean values
EN 1072 Plywood – Description of bending properties for structural plywood [Withdrawn in June 2012, however, it will still be referenced in other standards until they are reviewed]
EN 1087-1 Particleboards – Determination of moisture resistance – Boil test
EN 1156 Wood-based panels – Determination of duration of load and creep factors
EN 1195 Timber structures – Test methods – Performance of structural floor decking
EN 12369-1 Wood-base panels – Characteristic values for structural design – OSB, particleboard and fibreboards
EN 12369-2 Wood-base panels – Characteristic values for structural design – Plywood
EN 12871 Wood-based panels – Determination of performance characteristics for load bearing panels for use in floors, roofs and walls
PD CEN/TR 12872 Wood-base panels – Guidance on the use of load-bearing boards in floors, walls and roofs
EN 14272 Plywood – Calculation method for some mechanical properties

 Durability

EN 335 Durability of wood and wood-based products – Use classes: definitions, application to solid wood and wood-based products
EN 350-1 Durability of wood and wood-based products – Natural durability of solid wood – Guide to the principles of testing and classification of the natural durability of wood
EN 350-2 Durability of wood and wood-based products – Natural durability of solid wood – Guide to the natural durability and treatability of selected wood species of importance in Europe
CEN/TC 1099 Plywood – Biological durability – Guidance for the assessment of plywood for use in different use classes

 Formaldehyde Release

EN 120

(now withdrawn but is still referenced in EN 13986 until this standard is revised)

Wood-based panels – Determination of formaldehyde content – Extraction method called the perforator method
EN 717-1 Wood-based panels – Determination of formaldehyde release – Formaldehyde emission by the chamber method

EN 717-2

(now superseded by EN ISO 12460-3 but still referenced in EN 13986 until it is revised)

Wood-based panels – Determination of formaldehyde release – Formaldehyde release by the gas analysis method

EN 1084

 

 

Plywood – Formaldehyde release classes determination by the gas analysis method [Withdrawn in June 2012, however, it will still be referenced in other standards until they are reviewed]
EN ISO 12460-3 Wood-based panels – Determination of formaldehyde release – Gas analysis method
EN ISO 12460-5 Wood-based panels – Determination of formaldehyde release – Extraction method (called the perforator method)

Fire

EN 13501-1 Fire classification of construction products and building elements – classification using data from reaction to fire tests
EN 16733 Reaction to fire tests for building products. Determination of a building product’s propensity to undergo continuous smouldering

 Miscellaneous

EN 313-1 Plywood classification
EN 313-2 Plywood terminology
EN 326-2 Wood-based panels – Sampling, cutting and inspection –   Initial type testing and factory production control
EN 326-3 Wood-based panels – Sampling, cutting and inspection –   Inspection of an isolated lot of panels
EN 635-1 Plywood – Classification by surface appearance – General
EN 635-3 Plywood – Classification by surface appearance – Softwood
EN 635-5 Plywood – Classification by surface appearance – Methods for measuring and expressing characteristics and defects
EN 1438 Symbols for timber and wood-based products
PD CEN/TR 12872 Wood-base panels – Guidance on the use of load-bearing boards in floors, walls and roofs