EN 1912:2004+A3:2009
(Main)Structural timber - Strength classes - Assignment of visual grades and species
Structural timber - Strength classes - Assignment of visual grades and species
This document lists visual strength grades, species and sources of timber, and specifies the strength classes
from EN 338, to which they are assigned.
NOTE For the grades, species and sources included, there is long experience of use and/or satisfactory test data.
The sources listed are therefore largely determined by existing commercial practice.
Bauholz für tragende Zwecke - Festigkeitsklassen - Zuordnung von visuellen Sortierklassen und Holzarten
Dieses Dokument gibt visuelle Festigkeitsklassen, Holzarten und deren Herkunft an und legt die Festigkeitsklassen
nach EN 338 fest, denen sie zugeordnet sind.
ANMERKUNG Für die angegebenen Sortierklassen, Holzarten und Herkünfte liegen langjährige praktische
Erfahrungen und/oder befriedigende Prüfdaten vor. Die angegebene Herkunft orientiert sich daher weitestgehend an der
gewerblichen Praxis.
Bois de structure - Classes de résistance - Affection des classes visuelles et des essences
Le présent document répertorie les classes visuelles de résistance, les essences et les origines de bois et spécifie
les classes de résistance, fixées par l’EN 338, auxquelles elles se rapportent.
NOTE Pour les classes, essences et origines d’approvisionnement incluses, on doit pouvoir justifier d’une grande
expérience d’utilisation et/ou de données d’essais satisfaisantes. Les origines sont donc largement déterminées par la pratique
commerciale existante.
Konstrukcijski les - Trdnostni razredi - Določitev trdnostnih razredov na podlagi vizualnega razvrščanja in vrste lesa
General Information
- Status
- Withdrawn
- Publication Date
- 19-May-2009
- Withdrawal Date
- 23-Mar-2010
- Technical Committee
- CEN/TC 124 - Timber structures
- Drafting Committee
- CEN/TC 124/WG 2 - Solid timber
- Current Stage
- 9960 - Withdrawal effective - Withdrawal
- Start Date
- 24-Mar-2010
- Completion Date
- 24-Mar-2010
Relations
- Effective Date
- 18-Jan-2023
- Effective Date
- 19-Jan-2023
- Merged From
EN 1912:2004/prA3 - Structural timber - Strength classes - Assignment of visual grades and species - Effective Date
- 01-Apr-2009
- Revised
EN 1912:2012 - Structural Timber - Strength classes - Assignment of visual grades and species - Effective Date
- 13-Jun-2009
Frequently Asked Questions
EN 1912:2004+A3:2009 is a standard published by the European Committee for Standardization (CEN). Its full title is "Structural timber - Strength classes - Assignment of visual grades and species". This standard covers: This document lists visual strength grades, species and sources of timber, and specifies the strength classes from EN 338, to which they are assigned. NOTE For the grades, species and sources included, there is long experience of use and/or satisfactory test data. The sources listed are therefore largely determined by existing commercial practice.
This document lists visual strength grades, species and sources of timber, and specifies the strength classes from EN 338, to which they are assigned. NOTE For the grades, species and sources included, there is long experience of use and/or satisfactory test data. The sources listed are therefore largely determined by existing commercial practice.
EN 1912:2004+A3:2009 is classified under the following ICS (International Classification for Standards) categories: 79.040 - Wood, sawlogs and sawn timber. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 1912:2004+A3:2009 has the following relationships with other standards: It is inter standard links to EN 1912:2004+A4:2010, EN 1912:2004+A2:2008, EN 1912:2004/prA3, EN 1912:2012. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN 1912:2004+A3:2009 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2009
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YL]XDOQHJDUD]YUãþDQMDLQYUVWHOHVD
Structural timber - Strength classes - Assignment of visual grades and species
Bauholz für tragende Zwecke - Festigkeitsklassen - Zuordnung von visuellen
Sortierklassen und Holzarten
Bois de structure - Classes de résistance - Affection des classes visuelles et des
essences
Ta slovenski standard je istoveten z: EN 1912:2004+A3:2009
ICS:
79.040 Les, hlodovina in žagan les Wood, sawlogs and sawn
timber
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 1912:2004+A3
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2009
ICS 79.040 Supersedes EN 1912:2004+A2:2008
English Version
Structural timber - Strength classes - Assignment of visual
grades and species
Bois de structure - Classes de résistance - Affection des Bauholz für tragende Zwecke - Festigkeitsklassen -
classes visuelles et des essences Zuordnung von visuellen Sortierklassen und Holzarten
This European Standard was approved by CEN on 10 September 2004 and includes Amendment 1 approved by CEN on 28 December
2006, Amendment 2 approved by CEN on 2 February 2008 and Amendment 3 approved by CEN on 21 April 2009.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1912:2004+A3:2009: E
worldwide for CEN national Members.
Contents
page
Foreword .3
1 Scope .4
2 Normative references .4
3 Terms and definitions .4
4 Symbols and abbreviations .4
5 Requirements .5
6 Assignments to strength classes .5
Annex A (informative) Grading standards . 13
Bibliography . 15
Foreword
This document (EN 1912:2004+A3:2009) has been prepared by Technical Committee CEN/TC 124 “Timber
structures”, the secretariat of which is held by SFS.
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 November 2009 and conflicting national standards shall be withdrawn
at the latest by November 2009.
This document includes Amendment 1 approved on 2006-12-28, Amendment 2, approved by CEN on
2008-02-02 and Amendment 3, approved by CEN on 2009-04-21.
This document supersedes %EN 1912:2004+A2:2008&.
The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ",
#$ and % &.
This revised version contains assignments of additional grades and species.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and United Kingdom.
1 Scope
This document lists visual strength grades, species and sources of timber, and specifies the strength classes
from EN 338, to which they are assigned.
NOTE For the grades, species and sources included, there is long experience of use and/or satisfactory test data.
The sources listed are therefore largely determined by existing commercial practice.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 384, Structural timber — Determination of characteristic values of mechanical properties and density
#EN 14081 (all parts), Timber structures — Strength graded structural timber with rectangular cross
section$
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
timber source
geographical area of growth of the trees from which the timber is sawn
3.2
timber species
individual species or combination of species
3.3
Nordic countries
Denmark, Finland, Iceland, Norway and Sweden
4 Symbols and abbreviations
CNE Europe Central, Northern and Eastern Europe
NNE Europe Northern and North Eastern Europe
NC Europe Northern and Central Europe
5 Requirements
5.1 The grades referred to in Tables 1 and 2 shall be in accordance with a grading standard meeting the
requirements of #EN 14081$.
5.2 Timber of a grade, species and source may be assigned to a strength class and listed in this document
provided there is long experience of use and/or test data in accordance with EN 384.
NOTE 1 Where the required information becomes available for a grade, species and source not included in this
document, preliminary assignment to a strength class, pending revision of this document, may be obtained from
CEN/TC 124.
NOTE 2 The assignments of grades, species and sources to strength classes given in this document should be
reassessed when this document is reviewed, or sooner if there is reason to suspect that the mechanical properties and/or
density of the timber have changed, or the basis for the existing assessment no longer represents the current situation, e.g.
if there has been a change in the source.
6 Assignments to strength classes
Timber grades, species and sources listed, meet the requirements of the strength classes to which they are
assigned in Table 1 and Table 2.
Table 3 and Table 4 identify the botanical species for the commercial names listed in Table 1 and Table 2.
NOTE 1 Timber graded by machine to #EN 14081$ may be graded directly to the strength classes and marked
accordingly, and is therefore not referenced in this document.
NOTE 2 For combinations of species and visual grades, which meet the requirements of #EN 14081$, but are not
listed in this standard, the assignment to strength classes can be made according to EN 338 using characteristic values
determined in accordance with EN 384.
Table 1 — Assignment of grades of conifer species and poplar to strength classes
%
Strength Grading rule Grade Species commercial Source Botanical Comments
Class publishing (see name (see Note 2) identification
country Note 4) (see Table 3)
(see Note 1 at
end of the
table)
C35 Germany S13 Douglas Fir Germany 54
C30 France ST-I Spruce & Fir France 1, 22
Germany & S13 Spruce CNE Europe 22
Austria S13 Pine CNE Europe 47
S13 Fir CNE Europe 1
S13 Larch CNE Europe 15
Nordic T3 Pine (Redwood) NNE Europe 47
countries T3 Spruce (Whitewood) NNE Europe 22
T3 Fir NNE Europe 1
T3 Larch NNE Europe 15
USA J&P Sel Southern pine USA 35, 36, 43, 48
SLF Sel Southern pine USA 35, 36, 43, 48
Spain ME1 Laricio pine Spain 39
Slovak S0 Spruce Slovak Republic 22
Republic
C 27 France ST-I Larch France 15
Germany LS13 Poplar Germany 51
Spain ME1 Scots pine Spain 47
C24 France ST-II Spruce & Fir France 1, 22
ST-II Douglas Fir France 54
ST-II Pines France 39, 44, 47
ST-II Poplar (see Note 3) France 50
ST-II Larch France 15
Germany S10 Douglas Fir Germany 54
Germany & S10 Spruce CNE Europe 22
Austria S10 Pine CNE Europe 47
S10 Fir CNE Europe 1
S10 Larch CNE Europe 15
Nordic T2 Pine (Redwood) NNE Europe 47
countries T2 Spruce (Whitewood) NNE Europe 22
T2 Fir NNE Europe 1
T2 Larch NNE Europe 15
T2 & Sitka spruce Denmark and 28
better Norway
Spain ME1 Radiata pine Spain 49
ME1 Maritime pine Spain 44
C24 USA & J&P Sel Douglas fir-Larch USA & Canada 18, 54
Canada J&P Sel Hem-fir USA & Canada 2, 4, 5, 7, 8, 62
J&P Sel S-P-F USA & Canada 3, 6, 23, 25, 26,
SLF Sel Douglas fir-Larch USA & Canada 27, 32, 34, 45
SLF Sel Hem-fir USA & Canada 18, 54
SLF Sel S-P-F USA & Canada 2, 4, 5, 7, 8, 62
3, 6, 23, 25, 26,
27, 32, 34, 45
UK SS Paraná pine Brazil 12
SS Redwood CNE Europe 47
SS Whitewood CNE Europe 1, 22
SS Douglas fir-Larch USA & Canada 18, 54
SS Hem-fir USA & Canada 2, 4, 5, 7, 8, 62
SS S-P-F USA & Canada 3, 6, 23, 25, 26,
27, 32, 34, 45
SS Southern pine USA 35, 36, 43, 48
SS Caribbean pitch pine Caribbean 33, 42
SS Larch UK 15, 16, 17
Slovak SI Spruce Slovak Republic 22
Republic
C22 Germany LS10 & Poplar Germany 51
better
UK SS British pine UK 39
...
文書SIST EN 1912:2004+A3:2009は、構造用木材の強度等級に関する視覚的等級指定及び樹種の割り当てを扱った重要な標準である。この標準の範囲は、視覚的強度等級、樹種、木材の出所をリストアップし、EN 338に規定されている強度クラスへの割り当てを明確に示している。 この文書の強みは、視覚的強度等級の確立において、長年の使用経験と満足いく試験データに基づいている点である。これにより、木材の使用時における信頼性と安全性が確保され、建築業界における基準としての役割を果たしている。また、リストに含まれる樹種と出所は、既存の商業慣行によって大きく決定されており、実際の市場ニーズに対応した内容となっている。 EN 1912:2004+A3:2009の重要性は、構造用木材の強度等級を定義することによって、設計者や建設業者が木材を適切に選定できるようにし、その結果として構造物の耐久性と安全性を向上させる点にある。したがって、この標準は建築業界において非常に関連性の高い文書であり、視覚的な評価基準を提供することで、木材利用の透明性を高めている。
Die Norm SIST EN 1912:2004+A3:2009 bietet eine umfassende und detaillierte Klassifikation von Bauholz, einschließlich der Zuordnung von visuellen Klassen und Holzarten. Der Umfang dieser Norm ist entscheidend, da sie klare Richtlinien zur Einstufung und Verwendung von verschiedenen Holzarten in den entsprechenden Festigkeitsklassen gemäß EN 338 bereitstellt. Ein wesentlicher Stärke dieser Norm ist ihre fundierte Grundlage, die auf langjährigen Erfahrungen und zufriedenstellenden Testergebnissen basiert. Die Norm listet nicht nur die visuellen Festigkeitsgrade auf, sondern auch spezifische Holzarten und deren Herkunft, was eine wichtige Basis für die praktische Anwendung in der Bauindustrie darstellt. Durch die Standardisierung der Stärken und Klassifikationen wird die Qualität und Sicherheit in Bauprojekten gefördert, was den Einsatz von Holz als nachhaltiges Baumaterial weiter unterstützt. Die Relevanz der Norm SIST EN 1912:2004+A3:2009 ergibt sich auch aus den im Dokument aufgeführten kommerziellen Praktiken, die sich über Jahre etabliert haben. Dies gewährleistet eine hohe Akzeptanz und Anwendungssicherheit in der Branche, da die aufgeführten Holzarten und deren Eigenschaften bereits umfassend erprobt waren. Insgesamt bietet die Norm ein effektives und verlässliches Instrument zur Klassifizierung von Bauholz, das sowohl für Hersteller als auch für Planer und Anwender im Bauwesen von großer Bedeutung ist. Die klare Definition der Festigkeitsklassen und die damit verbundene Zuordnung zu visuellen Gradierungen schaffen ein hohes Maß an Transparenz und Vertrauen in die Qualität der verwendeten Holzmaterialien.
표준 EN 1912:2004+A3:2009은 구조 목재의 강도 등급 및 시각적 등급과 종(species) 배정에 관한 중요한 기준을 제공합니다. 이 문서는 시각적 강도 등급, 목재의 종 및 출처를 나열하고 강도 클래스(EN 338)에 따라 배정된 내용을 명확히 명시합니다. 따라서 이 표준은 목재 구조물 설계 및 시공에서 필수적으로 참고되어야 하는 중요한 자료입니다. 이 문서의 가장 큰 강점 중 하나는 목재 등급 및 종에 대한 방대한 사용 경험과 시험 데이터를 바탕으로 하여 신뢰성 있는 기준을 제시한다는 점입니다. 특히, 포함된 등급, 종, 출처에 대한 오랜 경험과 데이터는 이 표준이 실용적이고 적용 가능한 기준으로 자리 잡을 수 있게 합니다. 또한, 이 문서는 기존 상업 관행에 크게 기반하여 출처를 결정하고 있기 때문에, 업계 전문가들에게 친숙하고 사용하기 용이한 표준입니다. 이는 목재 제품이 안전하고 효율적으로 사용될 수 있도록 보장하는 중요한 역할을 합니다. 결론적으로, EN 1912:2004+A3:2009 표준은 목재 강도 등급 및 시각적 등급 부여를 위한 포괄적이고 실용적인 가이드를 제공하며, 이를 통해 건축 및 구조 설계에서의 목재 활용에 대한 신뢰성을 높입니다. 목재의 강도와 안전성을 평가하고 표준화하는 데 있어 이 문서는 매우 중요한 참고 자료로 여겨져야 합니다.
The standard SIST EN 1912:2004+A3:2009 provides a comprehensive framework for the assignment of visual grades and species in structural timber, aligning with the strength classes outlined in EN 338. This document is pivotal in establishing consistency and reliability in the use of timber across various applications. One of the key strengths of EN 1912:2004+A3:2009 lies in its thorough listing of visual strength grades, species, and their corresponding sources of timber. By integrating long-standing practices and tested data, the standard enhances confidence among stakeholders in the timber industry, from manufacturers to builders. The reliance on established commercial practices for the sources ensures that users are applying time-tested solutions, reducing the uncertainty often associated with material selection. Moreover, the standard's relevance cannot be overstated in today's construction landscape, where sustainability and material performance are at the forefront of design considerations. By standardizing visual grades, this document helps to streamline procurement processes and ensures that the structural integrity of timber used in construction can be consistently assessed and verified. Importantly, the assignment of strength classes based on rigorous guidelines fosters a higher level of trust between suppliers and consumers, as it guarantees that timber products meet specific performance criteria necessary for safe and efficient construction practices. The systematic approach in this standard promotes better understanding and communication among professionals in the sector, ultimately leading to improved quality and safety in timber construction. Overall, the SIST EN 1912:2004+A3:2009 standard emerges as a critical document that underlines the significance of quality assurance in structural timber, thereby strengthening its application within the industry.
La norme SIST EN 1912:2004+A3:2009 est un document essentiel pour la classification des bois de structure. Son champ d'application couvre l'attribution des classes de résistance visuelle et des espèces de bois, fournissant ainsi des informations cruciales pour les professionnels du secteur. L'un des points forts de cette norme est sa capacité à établir des grades de résistance visuelle basés sur des données d'utilisation éprouvées et des tests concluants. Cela garantit que les utilisateurs disposent d'une base solide pour choisir le bon matériau en fonction des exigences spécifiques de leur projet. Les classes de résistance, définies selon la norme EN 338, sont également clairement spécifiées, ce qui renforce la confiance dans la conformité des matériaux utilisés. La norme se distingue également par sa pertinence sur le marché commercial, car les sources de bois listées sont principalement déterminées par les pratiques commerciales existantes. Cela facilite l'adoption de la norme par les professionnels tout en s'alignant sur la réalité du marché. En attenant que la norme SIST EN 1912:2004+A3:2009 repose sur une longue expérience, elle permet une interopérabilité et une standardisation de la qualité des matériaux, un aspect de plus en plus crucial dans le domaine de la construction durable. En résumé, la norme SIST EN 1912:2004+A3:2009 s'avère être un outil indispensable pour l'assignation des classes de résistance des bois de structure, alliant rigueur scientifique et praticité commerciale, ce qui la rend d'une grande valeur pour les acteurs du secteur.
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