Plywood - Specifications

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.

Sperrholz - Anforderungen

Contreplaqué - Exigences

!La présente Norme européenne prescrit les exigences relatives aux panneaux contreplaqués, tels que définis dans l'EN 313 2, pour un usage général (utilisation autre qu'en structure) et pour une utilisation en structure, utilisés en milieu sec, humide ou extérieur. Elle décrit également un système de classification basé sur les propriétés en flexion.
NOTE 1   Il est fait référence à la présente Norme européenne dans l'EN 13986 pour les applications dans la construction.
La présente norme peut s'appliquer de façon appropriée à tous les contreplaqués, y compris revêtus ou recouverts, mais elle ne s'applique pas aux matériaux ou procédés utilisés pour le revêtement ou le recouvrement. Elle ne s'applique pas non plus aux matériaux ou procédés utilisés en vue d'améliorer la durabilité biologique.
NOTE 2   Pour toute recommandation supplémentaire relative à la durabilité biologique et à l'éventuelle nécessité d'un traitement de préservation en fonction de l'application et de l'aptitude à l'usage, il est possible de se référer au CEN/TS 1099.
Les valeurs indiquées à l'Article 4 concernent uniquement les propriétés du produit ; ce ne sont pas des valeurs caractéristiques et elles ne sont pas destinées à être utilisées dans des calculs de conception.
NOTE 3   Ces valeurs caractéristiques (par exemple pour utilisation dans des calculs de conception selon l'EN 1995-1-1) sont fournies soit dans l'EN 12369-2 sur la base du système de classification indiqué dans ce document, soit par le fabricant, sur la base des essais selon l'EN 789, l'EN 1058 et l'ENV 1156.
Elle fournit également des informations additionnelles sur des caractéristiques complémentaires pour certaines applications."

Vezane plošče - Specifikacije

General Information

Status
Published
Publication Date
07-May-2015
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
13-Apr-2015
Due Date
18-Jun-2015
Completion Date
08-May-2015

Relations

Effective Date
01-Jun-2015
Effective Date
01-Jun-2015
Effective Date
18-Jan-2023
Effective Date
18-Jan-2023
Effective Date
19-Jan-2023
Effective Date
19-Jan-2023

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SLOVENSKI STANDARD
SIST EN 636:2013+A1:2015
01-junij-2015
9H]DQHSORãþH6SHFLILNDFLMH
Plywood - Specifications
Sperrholz - Anforderungen
Contreplaqué - Exigences
Ta slovenski standard je istoveten z: EN 636:2012+A1:2015
ICS:
79.060.10 Vezan les Plywood
SIST EN 636:2013+A1:2015 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 636:2013+A1:2015

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SIST EN 636:2013+A1:2015

EUROPEAN STANDARD
EN 636:2012+A1

NORME EUROPÉENNE

EUROPÄISCHE NORM
March 2015
ICS 79.060.10 Supersedes EN 636:2012
English Version
Plywood - Specifications
Contreplaqué - Exigences Sperrholz - Anforderungen
This European Standard was approved by CEN on 11 August 2012 and includes Amendment 1 approved by CEN on 27 December 2014.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 636:2012+A1:2015 E
worldwide for CEN national Members.

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SIST EN 636:2013+A1:2015
EN 636:2012+A1:2015 (E)
Contents Page
Foreword .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .7
4 Symbols and subscripts .7
5 Classification system .8
6 General requirements .9
6.1 Tolerances on dimensions .9
6.2 Mechanical characteristics .9
6.2.1 General purpose (non-structural application) .9
6.2.2 Structural application . 10
6.3 Formaldehyde release . 10
6.3.1 Classification . 10
6.3.2 Conditioning of test pieces . 11
7 Requirements for plywood for use in dry conditions . 11
7.1 Bonding quality . 11
7.2 Biological durability . 11
8 Requirements for plywood for use in humid conditions . 12
8.1 Bonding quality . 12
8.2 Biological durability . 12
9 Requirements for plywood for use in exterior conditions. 12
9.1 Bonding quality . 12
9.2 Biological durability . 12
10 Supplementary properties . 12
11 Verification of compliance . 12
11.1 General . 12
11.2 External control . 12
11.3 Factory production control . 13
12 Marking, identification and documentation . 14
12.1 Boards marketed within the European Economic area for construction applications . 14
12.2 Other boards . 14
Annex A (normative) Supplementary properties . 15
Annex B (informative) Durability of wood and wood-based products - Definition of Use classes
of biological attack- Application to plywood . 16
B.1 General . 16
B.2 Use class1 . 16
B.3 Use class 2 . 16
B.4 Use class 3 . 16
B.5 Use class 4 . 17
B.6 Use class 5 . 17
2

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SIST EN 636:2013+A1:2015
EN 636:2012+A1:2015 (E)
B.7 Summary of Use classes for plywood . 18
B.8 Guide for the application to plywood . 19
B.8.1 Introduction . 19
B.8.2 General decision making . 19
B.8.3 General precautions . 19
B.8.4 Durability (inherent or conferred) of plywood . 20
Bibliography . 21

3

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SIST EN 636:2013+A1:2015
EN 636:2012+A1:2015 (E)
Foreword
This document (EN 636:2012+A1:2015) has been prepared by Technical Committee CEN/TC 112 “Wood-
based panels”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by September 2015, and conflicting national standards shall be
withdrawn at the latest by September 2015.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document includes Amendment 1, approved by CEN on 2014-12-27.
The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ".
This document supersedes !EN 636:2012".
!Deleted text"
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
4

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SIST EN 636:2013+A1:2015
EN 636:2012+A1:2015 (E)
1 Scope
!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."
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 310, Wood-based panels - Determination of modulus of elasticity in bending and of bending strength
EN 314-1, Plywood - Bonding quality - Part 1: Test methods
EN 314-2, Plywood - Bonding quality - Part 2: Requirements
EN 315, Plywood - Tolerances for dimensions
EN 318, Wood based panels - Determination of dimensional changes associated with changes in relative
humidity
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 - Part 1: Determination of thickness,
width and length
EN 324-2, Wood-based panels - Determination of dimensions of boards - Part 2: Determination of squareness
and edge straightness
EN 326-1, Wood-based panels - Sampling, cutting and inspection - Part 1: Sampling and cutting of test pieces
and expression of test results
5

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SIST EN 636:2013+A1:2015
EN 636:2012+A1:2015 (E)
EN 326-2, Wood-based panels - Sampling, cutting and inspection - Part 2: Initial type testing and factory
production control
EN 326-3, Wood-based panels - Sampling, cutting and inspection - Part 3: Inspection of an isolated lot of
panels
EN 335-3:1995, Durability of wood and wood-based products — Definition of hazard classes of biological
attack —Part 3: Application to wood-based panels
EN 594, Timber structures - Test methods - Racking strength and stiffness of timber frame wall panels
EN 596, Timber structures - Test methods - Soft body impact test of timber framed walls
EN 635-1, Plywood - Classification by surface appearance - Part 1: General
EN 635-2, Plywood - Classification by surface appearance - Part 2: Hardwood
EN 635-3, Plywood - Classification by surface appearance - Part 3: Softwood
CEN/TS 635-4, Plywood - Classification by surface appearance - Part 4: Parameters of ability for finishing,
guideline
EN 635-5, Plywood - Classification by surface appearance - Part 5: Methods for measuring and expressing
characteristics and defects
EN 717-1, Wood-based panels - Determination of formaldehyde release - Part 1: Formaldehyde emission by
the chamber method
EN 717-2, Wood-based panels - Determination of formaldehyde release - Part 2: Formaldehyde release by
the gas analysis method
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
ENV 1156, Wood-based panels — Determination of duration load and creep factors
EN 1195, Timber structures - Test methods - Performance of structural floor decking
EN 12369-2, Wood-based panels - Characteristic values for structural design - Part 2: Plywood
EN 13446, Wood-based panels - Determination of withdrawal capacity of fasteners
EN 13810-1, Wood-based panels - Floating floors - Part 1: Performance specifications and requirements
CEN/TS 13810-2, Wood-based panels - Floating floors - Part 2: Test methods
EN 13986, Wood-based panels for use in construction - Characteristics, evaluation of conformity and marking
EN 14272, Plywood - Calculation method for some mechanical properties
6

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SIST EN 636:2013+A1:2015
EN 636:2012+A1:2015 (E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
plywood for use in dry conditions
plywood to be used in conditions characterised by a moisture content in the material corresponding to a
temperature of 20 °C and a relative humidity of the surrounding air only exceeding 65 % for a few weeks per
year
Note 1 to entry: These conditions correspond with Service Class 1 according to EN 1995–1-1.
Note 2 to entry: Boards of this type are suitable for use in Use Class 1 of EN 335–3.
3.2
plywood for use in humid conditions
plywood to be used in conditions characterised by a moisture content in the material corresponding to a
temperature of 20 °C and relative humidity of the surrounding air only exceeding 85 % for a few weeks per
year
Note 1 to entry: These conditions correspond with Service Class 2 according to EN 1995–1-1.
Note 2 to entry: Boards of this type are suitable for use in Use Class 1 and 2 of EN 335–3.
Note 3 to entry: This type of plywood is appropriate for protected external applications (e.g. behind cladding or under
roof coverings), but is also capable of resisting weather exposure for short periods (e.g. when exposed during the
construction). It is also suitable for interior situations where the service moisture condition is raised above humidity of dry
conditions.
3.3
plywood for use in exterior conditions
plywood to be used in climatic conditions leading to higher moisture contents than in service class 2
Note 1 to entry: These conditions correspond with Service Class 3 according to EN 1995–1-1.
Note 2 to entry: Boards of this type are suitable for use in Use Class 1, 2 and 3 of EN 335–3.
Note 3 to entry: This type of plywood is capable of withstanding exposure to weathering conditions and liquid water, or
water vapour in a damp but ventilated location, under consideration of 9.2.
4 Symbols and subscripts
E modulus of elasticity (defined as stiffness in EN 1995-1-1), in Newton per square millimetre
E class of modulus of elasticity in bending
f strength in Newton per square millimetre
F class of bending strength
m bending
0 in the direction of the grain of the outer layer of plywood
90 perpendicular to the grain of the outer layer of plywood
7

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SIST EN 636:2013+A1:2015
EN 636:2012+A1:2015 (E)
5 Classification system
All plywood, independent of composition factors (e.g. species, number of plies, thickness of plies) can be
classified under this system based on bending properties.
The classification system may be used as an alternative to the full-scale testing as required by EN 789, for the
derivation of characteristic values for plywood, by cross-referencing with EN 12369-2 for the characteristic
values of each class listed in Tables 1 and 2.
The lower limit values given in Tables 1 and 2 for bending strength and modulus of elasticity in bending
correspond to 5 percentile values based on the mean values, determined according to EN 310 and EN 326-2
for individual boards and calculated in accordance with EN 326-1.
These values shall not be used for structural design.
For the determination of the bending properties, see 6.2.
Table 1 — Bending strength classes for plywood
Bending strength
Lower limit value
Class
2
N/mm
F 3 5
F 5 8
F 10 15
F 15 23
F 20 30
F 25 38
f
m, 0
f F 30 45
m, 90
F 35 52
F 40 60
F 50 75
F 60 90
F 70 105
F 80 120
8

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SIST EN 636:2013+A1:2015
EN 636:2012+A1:2015 (E)
Table 2 —Modulus of elasticity in bending classes for plywood
Modulus of elasticity in bending
Class Lower limit value
2
N/mm
E E 5 450
m, 0
E
E 10 900
m, 90
E 15 1 350
E 20 1 800
E 25 2 250
E 30 2 700
E 35 3 150
E 40 3 600
E 50 4 500
E 60 5 400
E 70 6 300
E 80 7 200
E 90 8 100
E 100 9 000
E 120 10 800
E 140 12 600
For a given plywood, the four classes shall be given according to the following sequence:
Strength in length direction/strength in width direction/modulus in length direction/modulus in width direction.
2 2 2 2
EXAMPLE fm, 0 = 22,4 N/mm , fm, 90 = 36,9 N/mm , Em, 0 = 2 850 N/mm and Em, 90 = 4 200 N/mm .
 The classes are expressed as: F 10/20 E 30/40.
6 General requirements
6.1 Tolerances on dimensions
The tolerances on dimensions shall be as specified in EN 315.
6.2 Mechanical characteristics
6.2.1 General purpose (non-structural application)
Bending properties shall be determined on small test pieces in accordance with EN 310 and calculated
according to EN 326-1.
5 percentile values are determined from minimum of 30 panels of the same product type according to
EN 326-2.
9

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SIST EN 636:2013+A1:2015
EN 636:2012+A1:2015 (E)
The bending properties are expressed according to Clause 5.The 5 percentile values shall be at least equal to
the lower limit of the classes given in Tables 1 and 2.
6.2.2 Structural application
In addition to 6.2.1, the characteristic values of the mechanical properties shall be either:
— Determined according to EN 1058, from EN 789 test results. Provided that the mechanical properties of
all the wood species involved in an untested composition have been derived from single species plywood
panels, in accordance with EN 1058 and EN 789, the extrapolation of these test results to this untested
composition shall be made using EN 14272.
or:
— Derived by cross-referencing with EN 12369-2 for the characteristic values of each class listed in Tables
1 and 2.
If it is made known by the purchaser that the boards are intended for specific use in flooring, walls or roofing,
the perfo
...

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