SIST EN 335:2013

Durability of wood and wood- based products - Use classes: definitions, application to solid wood and wood based panels

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.

Dauerhaftigkeit von Holz und Holzprodukten - Gebrauchsklassen: Definitionen, Anwendung bei Vollholz und Holzwerkstoffen

EN 335 legt fünf Gebrauchsklassen fest, die die verschiedenen Nutzungssituationen repräsentieren, denen Holz und Holzprodukte ausgesetzt sein können. EN 335 gibt außerdem die für jede Situation zutreffenden Organismen an.
Eine Gebrauchsklasse ist keine Leistungsklasse und gibt keinen Hinweis darauf, wie lange das Holzprodukt im Gebrauch halten wird.

Durabilité du bois et des matériaux à base de bois - Classes d'emploi: définitions, application au bois massif et aux panneaux à base de bois

L’EN 335 définit cinq classes d’emploi qui correspondent aux différentes situations en service auxquelles peuvent être exposés le bois et les matériaux à base de bois. L’EN 335 indique également les agents biologiques correspondant à chaque situation.
Une classe d’emploi n’est pas une classe de performance et ne donne pas d’indication concernant la durée de vie du bois en service.

Trajnost lesa in lesnih proizvodov - Razredi uporabe: definicije, uporaba pri masivnem lesu in lesnih ploščah

Ta evropski standard se uporablja za masivni les in lesne proizvode. Ta evropski standard določa pet razredov uporabe, ki ustrezajo različnim razmeram, kjer se lahko uporabljajo les in lesni proizvodi. V standardu so opisani tudi biološki dejavniki, značilni za posamezen razred uporabe. Razred uporabe ni razred učinkovitosti in ne podaja smernic glede življenjske dobe lesa in lesnih proizvodov na določenem mestu uporabe.

General Information

• Status: Published
• Public Enquiry End Date: 29-Nov-2011
• Publication Date: 18-Jun-2013
• ICS: 71.100.50 - Wood-protecting chemicals
• ICS: 79.040 - Wood, sawlogs and sawn timber
• ICS: 79.060.01 - Wood-based panels in general
• Technical Committee: LLZ - Les, lesni izdelki in zaščita lesa
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 28-Mar-2013
• Due Date: 02-Jun-2013
• Completion Date: 19-Jun-2013
• Directive: 89/106/EEC - Construction products
• Ref Project: EN 335:2013 - Durability of wood and wood-based products - Use classes: definitions, application to solid wood and wood-based products

Relations

• Replaces: SIST EN 335-3:2002 - Durability of wood and wood-based products - Definition of hazard classes of biological attack - Part 3: Application to wood-based panels
• Effective Date: 01-Sep-2013
• Replaces: SIST EN 335-1:2006 - Durability of wood and wood- based products - Definition of use classes - Part 1: General
• Effective Date: 01-Sep-2013
• Replaces: SIST EN 335-2:2006 - Durability of wood and wood-based products - Definition of use classes - Part 2: Application to solid wood
• Effective Date: 01-Jul-2013
• Replaces: SIST EN 335-1:2006 - Durability of wood and wood- based products - Definition of use classes - Part 1: General
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 335:2013
01-september-2013
1DGRPHãþD
SIST EN 335-1:2006
SIST EN 335-2:2006
SIST EN 335-3:2002
7UDMQRVWOHVDLQOHVQLKSURL]YRGRY5D]UHGLXSRUDEHGHILQLFLMHXSRUDEDSUL
PDVLYQHPOHVXLQOHVQLKSORãþDK
Durability of wood and wood- based products - Use classes: definitions, application to
solid wood and wood based panels
Dauerhaftigkeit von Holz und Holzprodukten - Gebrauchsklassen: Definitionen,
Anwendung bei Vollholz und Holzwerkstoffen
Durabilité du bois et des matériaux à base de bois - Classes d'emploi: définitions,
application au bois massif et aux panneaux à base de bois
Ta slovenski standard je istoveten z: EN 335:2013
ICS:
71.100.50 .HPLNDOLMH]D]DãþLWROHVD Wood-protecting chemicals
79.040 Les, hlodovina in žagan les Wood, sawlogs and sawn
timber
79.060.01 /HVQHSORãþHQDVSORãQR Wood-based panels in
general
SIST EN 335:2013 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 335:2013

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SIST EN 335:2013


EUROPEAN STANDARD
EN 335

NORME EUROPÉENNE

EUROPÄISCHE NORM
March 2013
ICS 71.100.50; 79.040 Supersedes EN 335-1:2006, EN 335-2:2006, EN 335-
3:1995
English Version
Durability of wood and wood-based products - Use classes:
definitions, application to solid wood and wood-based products
Durabilité du bois et des matériaux à base de bois - Dauerhaftigkeit von Holz und Holzprodukten -
Classes d'emploi: définitions, application au bois massif et Gebrauchsklassen: Definitionen, Anwendung bei Vollholz
aux matériaux à base de bois und Holzprodukten
This European Standard was approved by CEN on 5 February 2013.

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

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 335:2013: E
worldwide for CEN national Members.

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SIST EN 335:2013
EN 335:2013 (E)
Contents Page
Foreword .3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
4 Use classes: application to wood and wood-based products .5
4.1 General .5
4.2 Use class 1 (UC 1) .5
4.3 Use class 2 (UC 2) .6
4.4 Use class 3 (UC 3) .6
4.4.1 General .6
4.4.2 Sub-class 3.1 (UC 3.1) .6
4.4.3 Sub-class 3.2 (UC 3.2) .6
4.5 Use class 4 (UC 4) .6
4.6 Use class 5 (UC 5) .7
4.7 Summary of use classes for wood and wood-based products .8
Annex A (informative) Service classes according to EN 1995-1-1 .9
Annex B (informative) Additional information for the assignment of use classes . 10
Annex C (informative) Information on biological agents . 11
C.1 General . 11
C.2 Fungi . 11
C.2.1 General . 11
C.2.2 Wood-destroying fungi . 11
C.2.3 Wood-disfiguring fungi . 11
C.3 Insects . 12
C.3.1 Coleoptera (beetles) . 12
C.3.2 Isoptera (termites). 12
C.4 Marine borers . 13
Bibliography . 14

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SIST EN 335:2013
EN 335:2013 (E)
Foreword
This document (EN 335:2013) has been prepared by Technical Committee CEN/TC 38 “Durability of wood
and wood-based products”, the secretariat of which is held by AFNOR.
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 2013, and conflicting national standards shall be
withdrawn at the latest by September 2013.
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 supersedes EN 335-3:1995, EN 335-1:2006 and EN 335-2:2006.
Compared to EN 335, parts 1 to 3, the main modifications are as follows:
1) the former three parts of EN 335 have been combined;
2) the subclasses 3.1 and 3.2 have been redefined;
3) the subdivision of use class 4 has been omitted.
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.
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SIST EN 335:2013
EN 335:2013 (E)
Introduction
This standard gives general definitions of use classes for different service situations and is relevant to solid
wood and wood-based products.
This standard gives information on the biological agents that can attack wood and wood-based products in
defined situations.
The possibility of alignment between the three service classes of Eurocode 5 (EN 1995-1-1) and the five use
classes of EN 335 has been carefully studied. It is important to note that the two systems use different criteria
to achieve different results.
Annex A gives guidance on relationships between use classes and service classes.
Annex B gives additional information for the assignment of use classes.
Annex C gives information on biological agents.
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SIST EN 335:2013
EN 335:2013 (E)
1 Scope
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.
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 1001-2:2005, Durability of wood and wood-based products — Terminology — Part 2:Vocabulary
EN 1995-1-1, Eurocode 5 — Design of timber structures — Part 1-1: General — Common rules and rules for
buildings
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1001-2:2005 and the following apply.
3.1
service situation
situation of exposure of the wood element in use
3.2
wood-based product
any products containing wood
Note 1 to entry: For instance solid wood panel, laminated veneer lumber (LVL), plywood, oriented strand board (OSB),
resin-bonded particleboard, cement-bonded particleboard or fibreboard, modified wood are wood-based products.
4 Use classes: application to wood and wood-based products
4.1 General
The differences between the use classes are based on differences in environment exposures that can make
the wood or wood-based products susceptible to biological deterioration.
NOTE Border line and extreme cases of use of wood and wood-based products exist. This can cause the assignment
of a use class that differs from that defined in this standard (see Annex B).
4.2 Use class 1 (UC 1)
Situations in which the wood or wood-based product is inside a construction, not exposed to the weather and
wetting.
The attack by disfiguring fungi or wood-destroying fungi is in
...