CEN/TC 112/WG 2 - Plywood

This European Standard specifies the requirements for plywood, as defined in EN 313 2, for both general purpose use (non-structural application) and structural application in dry, humid or exterior conditions. It also gives a classification system based on the bending properties.
NOTE 1   This European Standard is referenced in EN 13986 for construction applications.
This standard can be appropriately applied for all plywood, including overlaid and coated plywood, but it does not cover materials or processes used for overlaying or coating. Neither does it cover any materials or processes applied in relation to enhancement of biological durability.
NOTE 2   For additional guidance on biological durability and the potential need for preservative treatment, according to application and serviceability, reference can be made to CEN/TS 1099.
The values listed under Clause 4 relate only to product properties; they are not 'characteristic values' and are not to be used in design calculations.
NOTE 3   Characteristic values (i.e. for use in design calculation according to EN 1995–1–1) are given either in EN 12369–2 which is based on the classification system given in this standard or by the manufacturer based on testing according to EN 789, EN 1058 and ENV 1156.
Additional information on supplementary properties for certain applications is also given.

This European Standard specifies, for plywood panels of any composition, symmetrical or not, a calculation method to derive some mechanical properties (strength and stiffness in bending, tension, compression, panel and planar shear) as well as density from the wood compounding the layers.
NOTE   Usually, the lay-up of the panels is symmetrical but, very often, the surface appearance of the face and the surface appearance of the back face differ, hence a difference between the mechanical properties of the respective veneers. Therefore, in this case, the composition is not mechanically symmetrical and a symmetry independent calculation method is needed.
Provided that structural characteristic values are taken for the layers, the resulting values for the panels can be used as characteristic values as required by EN 1995-1-1.
Conversely, Annex A defines the procedures to derive the veneer properties, in bending, tension and compression, either from testing panels according to EN 789 and EN 1058 or from timber testing according to EN 408 or from imposed values defined in EN 338.
Annex B provides practical spreadsheets, which are applications of the equations in the main part of this standard.
Annex C provide an example for the calculation of bending strength, in accordance with Annex B.

This document gives definitions, a classification and specifies the requirements for Laminated Veneer Lumber (LVL) for general purposes or for use in construction in dry, humid or exterior conditions.
NOTE   This standard will be called up in EN 13986 for construction applications.
Annex A "Evaluation of the bonding quality of laminated veneer lumber" is normative
Information on supplementary properties is given in Annex B.

This document gives guidance on the selection of plywood for use in the different use classes as defined in EN 335 1.
The guidance given takes into account the natural durability classification for solid timber (see EN 350 2) together with other factors specific for plywood.
It does not consider durability against chemico-physical factors, such as weathering, nor does it consider the biological durability of the adhesive.
Guidance on precautionary measures for use is also given.

This document gives guidance for the end user on the selection of plywood for application of various finishes for use in dry, humid, or exterior end-use conditions.

This European Standard specifies dimensional tolerances of plywood panels (length, width, thickness) and tolerances for squareness and edge straightness. NOTE Some uses of plywood can require narrower tolerances: see specific standards for types or perfor-mance
standards.

This European Standard defines the principal terms concerning plywood.

THis European Standard specifies the methods for measuring and expressing: some natural characteristics of wood, and the defects that come from the manufacturing process which are used for the classification of the appearance of plywood surfaces according to EN 635-1, EN 635-2 and EN 635-3.

This European Standard specifies the nature and limits of characteristics inherent in wood and manufacturing defects enabling the visual assessment of theplywood for allocation to an appearance class. This classification is a contribution to assessing the finishing suitability of plywood. This part of EN 635 applies to plywood, the surface veneers of which are made from softwood species. It does not apply to overlaid panels.

This European Standard specifies the nature and limits of characteristics inherent in wood and manufacturing defects enabling the visual assessment of theplywood for allocation to an appearance class. This classification is a contribution to assessing the finishing suitability of plywood. This part of EN 635 applies to plywood, the surface veneers of which are made from hardwood species. It does not apply to overlaid panels.

This part of EN 635 establishes general rules for the classification of plywood by its surface appearance. It does not apply to overlaid plywood.

This European Standard gives definitions, a classification and specifies the requirements for Laminated Veneer Lumber (LVL) for general  purposes or for use in construction in dry, humid or  exterior conditions.

This European Standard specifies the requirements for plywood, as defined in EN 313 2, for both general purpose use (non-structural application) and structural application in dry, humid or exterior conditions. It also gives a classification system based on the bending properties.
NOTE 1   This European Standard is referenced in EN 13986 for construction applications.
This standard can be appropriately applied for all plywood, including overlaid and coated plywood, but it does not cover materials or processes used for overlaying or coating. Neither does it cover any materials or processes applied in relation to enhancement of biological durability.
NOTE 2   For additional guidance on biological durability and the potential need for preservative treatment, according to application and serviceability, reference can be made to CEN/TS 1099.
The values listed under Clause 4 relate only to product properties; they are not 'characteristic values' and are not to be used in design calculations.
NOTE 3   Characteristic values (i.e. for use in design calculation according to EN 1995–1-1) are given either in EN 12369–2 which is based on the classification system given in this standard or by the manufacturer based on testing according to EN 789, EN 1058 and ENV 1156.
Additional information on supplementary properties for certain applications is also given.

This European Standard specifies the requirements for plywood, as defined in EN 313-2, for both general purpose use (non-structural application) and structural application in dry, humid or exterior conditions. It also gives a classification system based on the bending properties.
NOTE 1   This European Standard is referenced in EN 13986 for construction applications.
NOTE 2   For additional guidance on application, information is provided in CEN/TS 1099.
The values listed under Clause 4 relate only to product properties; they are not 'characteristic values' and are not to be used in design calculations.
NOTE 3   Characteristic values (i.e. for use in design calculation according to EN 1995 1 1) are given either in EN 12369 2 which is based on the classification system given in this standard or by the manufacturer based on testing according to EN 789, EN 1058 and ENV 1156.
Additional information on supplementary properties for certain applications is also given.

This European Standard specifies the requirements for plywood for general purposes or structural application in dry, humid or exterior conditions. It also gives a classification system based on the bending properties.
NOTE 1   This standard will be called up in EN 13986 for construction applications.
The values listed in this standard relate to product properties but they are not characteristic values to be used in design calculations.
NOTE 2   Such characteristic values (e. g. for use in design calculation in ENV 1995-1-1) are given either in prEN 12369-2 or by the manufacturer, based on testing according to EN 789, EN 1058 and ENV 1156.
Additional information on supplementary properties for certain applications is also given.

This European Prestandard gives a calculation method for the estimation of some mechanical properties of
plywood (strength and stiffness) with a symmetrical composition.
The resulting values are intended as predictive only.

This European Standard provides information on the characteristic values for use in designing structures
incorporating wood based panels. The characteristic values given are as defined in ENV 1995-1-1.
This standard includes the characteristic values of the mechanical properties for plywood complying with EN 636 and the requirements of EN 13986 when used in a bending mode.
Advice on obtaining the characteristic values for tension and compression for plywood by either testing or calculation is provided. Conservative values for shear are also included.
Characteristic values for OSB, particleboards and fibreboards are given in EN 12369-1. A further part of the standard for characteristic values of solid wood panels is in preparation.

This European  Standard specifies how bending properties can be described and used to identify structural plywood. These bending properties are derived from medium sized test pieces in accordance with EN 789 and EN 1058. Note: A standard "Wood-based panels - Characteristic values for established products" isin course of preparation.

This document gives definitions, a classification and specifies the requirements for Laminated Veneer Lumber (LVL) for general purposes or for use in construction in dry, humid or exterior conditions.
NOTE   This standard will be called up in EN 13986 for construction applications.
Annex A "Evaluation of the bonding quality of laminated veneer lumber" is normative
Information on supplementary properties is given in Annex B.

This European Pre-standard gives guidances on the selection of plywood for use in the different hazard classes of biological attack as defined in EN 335-1. The guidance given takes into account the natural durability classification for solid timber (see EN 350-2) together with other factors specific for plywood. It does not consider durability against chemico-physical factors, such as weathering, nor does it consider the biological durability of the adhesive.

This Standard gives guidance for the end user on the selection of plywood for application of various finishes for use in dry, humid, or exterior end-use conditions.

This European Standard defines formaldehyde release classes for plywood, determined by the gas analysis method (see EN 717-2).

This European Standard specifies basic requirements for plywood for use in exterior conditions. Additional information on supplementary properties for cer-tain applications is also given.

This European standard specifies basic requirements for plywood for use in humid conditions. Information on additional properties for certain applications is also given.

This European standard specifies basic requirements for plywood for use in dry conditions. Information on additional properties for certain applications is also given.

This European Standard defines tolerances for dimensions of plywood panels (lenght, width,thickness) and tolerances for squareness and edge straightness.

This European Standard defines the principal terms concerning plywood.

This European Standard gives a classification of plywood panels.