iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
CEN

EN 1912:2004+A2:2008

(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 - Affectation des classes visuelles 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Withdrawn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
01-Apr-2008
Withdrawal Date
19-May-2009
ICS
79.040 - Wood, sawlogs and sawn timber
Technical Committee
CEN/TC 124 - Timber structures
Drafting Committee
CEN/TC 124/WG 2 - Solid timber
Current Stage
9960 - Withdrawal effective - Withdrawal
Start Date
20-May-2009
Completion Date
20-May-2009
Ref Project
SIST EN 1912:2004+A2:2008 - Structural timber - Strength classes - Assignment of visual grades and species

Relations

Merged Into
EN 1912:2004+A3:2009 - Structural timber - Strength classes - Assignment of visual grades and species
Effective Date
19-Jan-2023
Merged From
EN 1912:2004+A1:2007 - Structural timber - Strength classes - Assignment of visual grades and species
Effective Date
19-Jan-2023
Merged From
EN 1912:2004/prA2 - Structural timber - Strength classes - Assignment of visual grades and species
Effective Date
18-Jan-2023
Consolidates
EN 1912:2004 - Structural timber - Strength classes - Assignment of visual grades and species
Effective Date
22-Dec-2008
Amended By
EN 1912:2004/prA3 - Structural timber - Strength classes - Assignment of visual grades and species
Effective Date
22-Dec-2008

Buy Standard

EN 1912:2004+A2:2008EN 1912:2004+A2:2008
PreviousNext
Standard
EN 1912:2004+A2:2008
English language
15 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 1912:2004+A2:2008
01-september-2008
.RQVWUXNFLMVNLOHV7UGQRVWQLUD]UHGL'RORþLWHYWUGQRVWQLKUD]UHGRYQDSRGODJL
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 - Affectation des classes visuelles des
essences
Ta slovenski standard je istoveten z: EN 1912:2004+A2:2008
ICS:
79.040 Les, hlodovina in žagan les Wood, sawlogs and sawn
timber
SIST EN 1912:2004+A2:2008 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN 1912:2004+A2:2008

---------------------- Page: 2 ----------------------

SIST EN 1912:2004+A2:2008


EUROPEAN STANDARD
EN 1912:2004+A2

NORME EUROPÉENNE

EUROPÄISCHE NORM
April 2008
ICS 79.040 Supersedes EN 1912:2004+A1:2007
English Version
Structural timber - Strength classes - Assignment of visual
grades and species
Bois de structure - Classes de résistance - Affectation des Bauholz für tragende Zwecke - Festigkeitsklassen -
classes visuelles 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 and Amendment 2 approved by CEN on 2 February 2008.

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
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1912:2004+A2:2008: E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------

SIST EN 1912:2004+A2:2008
EN 1912:2004+A2:2008 (E)
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

2

---------------------- Page: 4 ----------------------

SIST EN 1912:2004+A2:2008
EN 1912:2004+A2:2008 (E)
Foreword
This document (EN 1912:2004+A2:2008) 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 October 2008 and conflicting national standards shall be withdrawn at
the latest by October 2008.
This document includes Amendment 1 approved on 2006-12-28 and Amendment 2, approved by CEN on
2008-02-0
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

CEN
EN 384:2016+A2:2022(Main)
Structural timber - Determination of characteristic values of mechanical properties and density
SIST EN 384:2016+A2:2022

This European Standard gives a method for determining characteristic values of mechanical properties and density, for defined populations of visual grades and/or strength classes of machine graded structural timber. Additionally it covers the stages of sampling, testing, analysis and presentation of the data.
The standard provides methods to derive strength, stiffness and density properties for structural timber from tests with defect-free specimen.
The values determined in accordance with this standard for mechanical properties and density are suitable for assigning grades and species to the strength classes of EN 338.
NOTE 1   For assigning grades and species to the strength classes in EN 338 only three properties, i.e. bending or tension strength, modulus of elasticity parallel to grain in bending or tension and density need to be determined from test data, other properties can be calculated according to Table 2.
NOTE 2   EN 1912 gives examples of established visual grades assigned to strength classes.

  • Standard
    20 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 14081-2:2018+A1:2022(Main)
Timber structures - Strength graded structural timber with rectangular cross section - Part 2: Machine grading; additional requirements for type testing
SIST EN 14081-2:2018+A1:2022

This document specifies requirements, additional to those of EN 14081-1, for type testing of machine graded structural timber with rectangular cross-sections shaped by sawing, planning or other methods, and having deviations from the target sizes corresponding to EN 336. This includes requirements for strength grading machines.

  • Standard
    36 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 14081-3:2022(Main)
Timber structures - Strength graded structural timber with rectangular cross section - Part 3: Machine grading; additional requirements for factory production control
SIST EN 14081-3:2022

This document specifies requirements additional to those given in EN 14081 1 for factory production control of machine graded structural timber with rectangular cross-sections shaped by sawing, planing or other methods, and having deviations from the target sizes corresponding to EN 336.

  • Standard
    11 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 14081-1:2016+A1:2019(Main)
Timber structures - Strength graded structural timber with rectangular cross section - Part 1: General requirements
SIST EN 14081-1:2016+A1:2019

This European Standard specifies requirements for strength graded structural timber with rectangular cross-sections either visual or machine graded, shaped by sawing, planning or other methods and with cross-sectional dimensions complying with EN 336 (referred to as structural timber in the following clauses).
This European Standard includes provisions for test methods, Assessment and Verification of Constancy of Performance and marking of structural timber.
NOTE 1   For machine strength graded timber additional provisions for type testing (TT) are given in EN 14081-2 and for factory production control (FPC) in EN 14081-3.
NOTE 2   An acceptance procedure for verification of a lot is given in EN 14358 which may be used for a delivery of structural timber.
This European Standard identifies characteristics for which limits have to be given in visual grading standards.
This European Standard covers structural timber, untreated or treated against biological attack.
This European Standard does not cover:
-   timber treated by fire retardant products to improve its fire performance;
-   thermally and/or chemically modified timber;
-   structural finger jointed timber.

  • Standard
    36 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 14358:2016(Main)
Timber structures - Calculation and verification of characteristic values
SIST EN 14358:2016

This standard gives statistical methods for the determination of characteristic values from test results on a sample drawn from a clearly defined reference population of e.g. solid wood, fasteners, connectors and wood-based products. The characteristic value is an estimate of the property of the reference population and can be based on a 5-percentile value of strength, resistance or density as well as on a mean value for stiffness.
Parametric methods are given for the determination of lower and upper 5-percentiles. The upper 5-percentile is the 95-percentile.
This standard is suitable for use with any structural product in the frame of type testing as well as factory production control.
Sampling is not covered by this document, but reference is made to the relevant product standards.
This standard also provides the acceptance procedure for verification of a lot.
Depending on the product, characteristic values determined in accordance with this standard may be used directly or may need additional adjustments specified in the relevant product standards.
Note:   For example, in the case of solid timber, specific adjustment factors for calculation of characteristic values are given in EN 384.

  • Standard
    15 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 16737:2016(Main)
Structural timber - Visual strength grading of tropical hardwood
SIST EN 16737:2016

This European Standard specifies a method of strength grading tropical hardwood visually for structural use.
The permissible limits of characteristics for a single visual strength grade of timber are specified, designated “Structural Tropical Hardwood” (STH) grade.
The method is only suitable for pieces of timber with a rectangular cross-section that is constant along their lengths.
Characteristics related to durability are not covered in this standard. For some end uses, additional requirements may be specified at the time of grading, e.g. sapwood exclusion.

  • Standard
    21 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 338:2016(Main)
Structural timber - Strength classes
SIST EN 338:2016

This European Standard establishes a system of strength classes for general use in design codes.
It gives characteristic strength and stiffness properties and density values for each class to which EN 14081-1 refers.
This standard is applicable to all softwood and hardwood timber for structural use.

  • Standard
    11 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 15497:2014(Main)
Structural finger jointed solid timber - Performance requirements and minimum production requirements
SIST EN 15497:2014

This European Standard sets out provisions regarding the performance characteristics for structural finger jointed timber with rectangular cross section for use in buildings and bridges.
The use of structural finger jointed timber may be limited to certain service classes in some member states.
It also lays down minimum production provisions and procedures for Assessment and Verification of Constancy of Performance for structural finger jointed timber.
This European Standard is applicable to structural finger jointed timber made of coniferous timber species listed in this standard or poplar.
Although it may be possible to produce structural finger jointed timber made from specific broadleaf species based on some provisions of this European Standard, this standard is not applicable to these products.
This European Standard is only applicable to finger joints between timber sections of the same species.
This European Standard does not cover impressed (die-formed) finger joints.
This European Standard covers structural finger jointed timber untreated or treated against biological attack. Structural finger jointed timber treated with fire retardants is not covered.

  • Standard
    57 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 336:2013(Main)
Structural timber - Sizes, permitted deviations
SIST EN 336:2013

This European Standard specifies two classes of permitted deviations from target sizes for structural timber of softwood and hardwood species.
It also specifies the moisture content to be used as a reference point for the measurement of sizes, and gives average values for changes in size due to changes in moisture content.
It is applicable to sawn and prepared square-edged structural timber with parallel edges having sawn thicknesses or widths greater than 6 mm.

  • Standard
    7 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 1912:2012/AC:2013(Corrigendum)
Structural Timber - Strength classes - Assignment of visual grades and species
SIST EN 1912:2012/AC:2013

This European Standard lists the visual grades, species and sources of timber, and specifies the strength classes to which they are assigned, as documented in EN 338.
NOTE   For the grades, species and sources included, there is a long history of use and/or satisfactory test data. The sources listed therefore are largely determined by existing commercial practices.

  • Corrigendum
    4 pages
    English language
    sale 10% off
    e-Library read for
    1 day