SIST EN 1912:2005
(Main)Structural timber - Strength classes - Assignment of visual grades and species
Structural timber - Strength classes - Assignment of visual grades and species
This European Standard 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 - Affectation 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
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Structural timber - Strength classes - Assignment of visual grades and speciesBois de structure - Classes de résistance - Affectation des classes visuelles et des essencesBauholz für tragende Zwecke - Festigkeitsklassen - Zuordnung von visuellen Sortierklassen und HolzartenTa slovenski standard je istoveten z:EN 1912:2004SIST EN 1912:2005en79.040Les, hlodovina in žagan lesWood, sawlogs and sawn timberICS:SIST EN 1912:2000/AC:2000SIST EN 1912:20001DGRPHãþDSLOVENSKI
STANDARDSIST EN 1912:200501-maj-2005
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1912
December 2004 ICS 79.040 Supersedes EN 1912:1998 English version
Structural timber - Strength classes - Assignment of visual grades and species
Bois de structure - Classes de résistance - Affectation des classes visuelles et des essences
Bauholz für tragende Zwecke - Festigkeitsklassen - Zuordnung von visuellen Sortierklassen und Holzarten This European Standard was approved by CEN on 10 September 2004.
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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2004 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1912:2004: E
EN 1912:2004 (E) 2 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.14 Bibliography.16
EN 1912:2004 (E) 3 Foreword This document (EN 1912:2004) 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 June 2005, and conflicting national standards shall be withdrawn at the latest by June 2005. This document supersedes EN 1912:1998. 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EN 1912:2004 (E) 4
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 518, Structural timber - Grading - Requirements for visual strength grading standards. 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
EN 1912:2004 (E) 5 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 518. 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 519 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 518, 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.
EN 1912:2004 (E) 6 Table 1 – Assignment of grades of conifer species and poplar to strength classes Strength Class Grading rule publishing country (see note 1 at end of Table) Grade (see note 4) Species commercial name Source (see note 2) Botanical identification (see Table 3) Comments C35 ---
C30 France
Germany
Germany and
Austria
Nordic Countries
USA
Spain ST-I
S13
S13 S13 S13 S13
T3 T3 T3 T3
J&P Sel SLF Sel
ME1 Spruce & Fir
Douglas Fir
Spruce Pine Fir Larch
Pine (Redwood) Spruce (Whitewood) Fir Larch
Southern pine Southern pine
Laricio pine France
Germany
CNE Europe CNE Europe CNE Europe CNE Europe
NNE Europe NNE Europe NNE Europe NNE Europe
USA USA
Spain 1, 22
54
22 47 1 15
47 22 1 15
35, 36, 43, 48 35, 36, 43, 48
39
Limited to thicknesses of 60 mm and above
C27 France
Spain ST-I
ME1 Larch
Scots pine France
Spain 15
47
C24
France
Germany
Germany and Austria
Nordic countries
Spain
USA and Canada
ST-II ST-II ST-II ST-II ST-II
S10
S10 S10 S10 S10
T2 T2 T2 T2 T2
ME1 ME1
J&P Sel J&P Sel J&P Sel Spruce & Fir Douglas Fir Pines Poplar (see note 3) Larch
Douglas Fir
Spruce Pine Fir Larch
Pine (Redwood) Spruce (Whitewood) Fir Larch Sitka spruce
Radiata pine Maritime pine
Douglas fir-Larch Hem-fir S-P-F France France France France France
Germany
CNE Europe CNE Europe CNE Europe CNE Europe
NNE Europe NNE Europe NNE Europe NNE Europe NNE Europe
Spain Spain
USA & Canada USA & Canada USA & Canada 1, 22 54 39, 44, 47 50 15
54
22 47 1 15
47 22 1 15 28
49 44
18, 54 2, 4, 5, 7, 8, 62 3, 6, 23, 25, 26, 27, 32, 34, 45
Limited to thicknesses of 60 mm and above
EN 1912:2004 (E) 7
Table 1 – Assignment of grades of conifer species and poplar to strength classes (continued)
Strength Class Grading rule publishing country (see note 1 at end of Table) Grade (see note 4) Species commercial name Source (see note 2) Botanical identification (see Table 3) Comments C24 USA and Canada
UK SLF Sel SLF Sel SLF Sel
SS SS SS SS SS SS
SS SS SS Douglas fir-Larch Hem-fir S-P-F
Paraná pine Redwood Whitewood Douglas fir-Larch Hem-fir S-P-F
Southern pine Caribbean pitch pine Larch USA & Canada USA & Canada USA & Canada
Brazil CNE Europe CNE Europe USA & Canada USA & Canada USA & Canada
USA Caribbean UK 18, 54 2, 4, 5, 7, 8, 62
...
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