SIST EN 1912:2005+A1:2007
(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
Bois de structure - Classes de résistance - Affectation des classes visuelles de 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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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 de des essencesBauholz für tragende Zwecke - Festigkeitsklassen - Zuordnung von visuellen Sortierklassen und HolzartenTa slovenski standard je istoveten z:EN 1912:2004+A1:2007SIST EN 1912:2005+A1:2007en;fr;de79.040Les, hlodovina in žagan lesWood, sawlogs and sawn timberICS:SLOVENSKI
STANDARDSIST EN 1912:2005+A1:200701-julij-2007
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1912:2004+A1
February 2007 ICS 79.040 Supersedes EN 1912:2004English Version
Structural timber - Strength classes - Assignment of visual grades and species
Bois de structure - Classes de résistance - Affection des classes visuelles de des essences
Bauholz für tragende Zwecke - Festigkeitsklassen - 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.
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: rue de Stassart, 36
B-1050 Brussels © 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1912:2004+A1:2007: E
EN 1912:2004+A1:2007 (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+A1:2007 (E) 3 Foreword This document (EN 1912:2004+A1:2007) has been prepared by Technical Committee CEN/TC 124 “Timber structures”, the secretariat of which is held by SFS. This document shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2007 and conflicting national standards shall be withdrawn at the latest by August 2007. This document includes Amendment 1, approved by CEN on 2006-12-28. This document supersedes EN 1912:2004. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ". 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.
EN 1912:2004+A1:2007 (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+A1:2007 (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+A1:2007 (E) 6 Table 1 — Assignment of grades of conifer species and poplar to strength classes ! Strength Class Grading rule publishing country (see note 1) Grade (see note 4) Species commercial name Source (see note 2) Botanical identification (see Table 3) Comments C35 Germany S13 Douglas fir Germany 54
C30 France
Germany and Austria
Nordic countries
USA
Spain
Slovak Republic ST-I
S13 S13 S13 S13
T3 T3 T3 T3
J&P Sel SLF Sel
ME1
S0
Spruce and fir
Spruce Pine Fir Larch
Pine (Redwood) Spruce (Whitewood) Fir Larch
Southern pine Southern pine
Laricio pine
Spruce France
CNE Europe CNE Europe CNE Europe CNE Europe
NNE Europe NNE Europe NNE Europe NNE Europe
USA USA
Spain
Slovak Republic 1, 22
22 47 1 15
47 22 1 15
35, 36, 43, 48 35, 36, 43, 48
39
22
C 27 France
Spain ST-I
ME1 Larch
Scots pine France
Spain 15
47
C24
C24
France
Germany
Germany and Austria
Nordic countries
Spain
ST-II ST-II ST-II ST-II ST-II
S10
S10 S10 S10 S10
T2 T2 T2 T2 T2 and better
ME1 ME1
Spruce and 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
France France France France France
Germany
CNE Europe CNE Europe CNE Europe CNE Europe
NNE Europe NNE Europe NNE Europe NNE Europe Denmark and Norway
Spain Spain
1, 22 54 39, 44, 47 50 15
54
22 47 1 15
47 22 1 15 28
49 44
EN 1912:2004+A1:2007 (E) 7
USA and Canada J&P Sel J&P Sel J&P Sel Douglas fir-Larch Hem-fir S-P-F
USA and Canada USA and Canada USA and Canada 18, 54 2, 4, 5, 7, 8, 62 3, 6, 23, 25, 26, 27, 32, 34, 45
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 and Canada USA and Canada USA and Canada
Brazil CNE Europe CNE Europe USA and Canada USA and Canada USA and Canada
USA Caribbean UK 18, 54 2, 4, 5, 7, 8, 62 3, 6, 23, 25, 26, 27, 32, 34, 45
...
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