EN 408:2003

Timber structures - Structural timber and glued laminated timber - Determination of some physical and mechanical properties

This European Standard specifies test methods for determining the following properties of structural timber and glued laminated timber: modulus of elasticity in bending; shear modulus; bending strength; modulus of elasticity in tension parallel to the grain; tension strength parallel to the grain; modulus of elasticity in compression parallel to the grain; compression strength parallel to the grain; modulus of elasticity in tension perpendicular to the grain; tension strength perpendicular to the grain; modulus of elasticity in compression perpendicular to the grain; compression strength perpendicular to the grain and shear strength.
In addition, the determination of dimensions, moisture content, and density of test pieces are specified.
The methods apply to rectangular and circular shapes (of substantially constant cross section) of solid unjointed timber or finger-jointed timber and glued laminated timber.

Holzbauwerke - Bauholz für tragende Zwecke und Brettschichtholz - Bestimmung einiger physikalischer und mechanischer Eigenschaften

Diese Europäische Norm legt Prüfverfahren zur Bestimmung folgender Eigenschaften von Bauholz für tragende Zwecke und Brettschichtholz fest: Biege-Elastizitätsmodul, Schubmodul, Biegefestigkeit, Zug-Elastizitätsmodul in Faserrichtung, Zugfestigkeit in Faserrichtung, Druck-Elastizitätsmodul in Faserrichtung, Druckfestigkeit in Faserrichtung, Zug-Elastizitätsmodul rechtwinklig zur Faserrichtung, Zugfestigkeit rechtwinklig zur Faserrichtung, Druck-Elastizitätsmodul rechtwinklig zur Faserrichtung, Druckfestigkeit rechtwinklig zur Faserrichtung sowie die Scherfestigkeit fest.
Zusätzlich wird die Bestimmung der Maße, der Holzfeuchte und der Rohdichte festgelegt.
Die Verfahren gelten für rechteckige und kreisförmige Formen (mit im Wesentlichen konstantem Querschnitt) aus ungestoßenem oder keilgezinktem Bauholz und Brettschichtholz.

Structures en bois - Bois de structure et bois lamellé collé - Détermination de certaines propriétés physiques et mécaniques

La présente Norme européenne définit des méthodes d'essai pour déterminer les propriétés suivantes du bois de structure et du bois lamellé collé : le module d'élasticité en flexion, le module de cisaillement, la résistance à la flexion, le module d'élasticité en traction axiale, la résistance à la traction axiale, le module d'élasticité en compression axiale, la résistance à la compression axiale, le module d'élasticité en traction transversale, la résistance à la traction transversale, le module d'élasticité en compression transversale, la résistance à la compression transversale et la résistance au cisaillement.
La détermination des dimensions, de la teneur en humidité et de la masse volumique des éprouvettes d'essai est également définie.
Les méthodes s'appliquent aux bois massifs non aboutés ou aboutés par entures multiples et aux bois lamellés-collés de formes rectangulaire et circulaire (de section relativement constante).

Lesene konstrukcije - Konstrukcijski les in lepljeni lamelirani les - Ugotavljanje nekaterih fizikalnih in mehanskih lastnosti

General Information

• Status: Withdrawn
• Publication Date: 05-Aug-2003
• Withdrawal Date: 10-Aug-2010
• ICS: 79.040 - Wood, sawlogs and sawn timber
• ICS: 79.060.99 - Other wood-based panels
• ICS: 91.080.20 - Timber structures
• Technical Committee: CEN/TC 124 - Timber structures
• Drafting Committee: CEN/TC 124 - Timber structures
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 11-Aug-2010
• Completion Date: 11-Aug-2010
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Mandate: M/112 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on structural timber products
• Ref Project: SIST EN 408:2004 - Timber structures - Structural timber and glued laminated timber - Determination of some physical and mechanical properties

Relations

• Replaces: EN 408:1995 - Timber structures - Structural timber and glued laminated timber - Determination of some physical and mechanical properties
• Effective Date: 22-Dec-2008
• Replaces: EN 1193:1997 - Timber structures - Structural timber and glued laminated timber - Determination of shear strength and mechanical properties perpendicular to the grain
• Effective Date: 22-Dec-2008
• Replaced By: EN 408:2010 - Timber structures - Structural timber and glued laminated timber - Determination of some physical and mechanical properties
• Effective Date: 14-Aug-2010

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2004
1DGRPHãþD
SIST EN 1193:2000
SIST EN 408:1996
Lesene konstrukcije - Konstrukcijski les in lepljeni lamelirani les - Ugotavljanje
nekaterih fizikalnih in mehanskih lastnosti
Timber structures - Structural timber and glued laminated timber - Determination of some
physical and mechanical properties
Holzbauwerke - Bauholz für tragende Zwecke und Brettschichtholz - Bestimmung einiger
physikalischer und mechanischer Eigenschaften
Structures en bois - Bois de structure et bois lamellé collé - Détermination de certaines
propriétés physiques et mécaniques
Ta slovenski standard je istoveten z: EN 408:2003
ICS:
79.040 Les, hlodovina in žagan les Wood, sawlogs and sawn
timber
91.080.20 Lesene konstrukcije Timber structures
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 408
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2003
ICS 91.080.20 Supersedes EN 408:1995; EN 1193:1997
English version
Timber structures - Structural timber and glued laminated timber
- Determination of some physical and mechanical properties
Structures en bois - Bois de structure et bois lamellé collé - Holzbauwerke - Bauholz für tragende Zwecke und
Détermination de certaines propriétés physiques et Brettschichtholz - Bestimmung einiger physikalischer und
mécaniques mechanischer Eigenschaften
This European Standard was approved by CEN on 20 June 2003.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, 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
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 408:2003 E
worldwide for CEN national Members.

Contents
page
Foreword.4
Introduction .5
1 Scope .5
2 Normative references.5
3 Terms and definitions .6
4 Symbols and abbreviations.6
5 Determination of dimensions of test pieces.7
6 Determination of moisture content of test pieces.7
7 Determination of density of test pieces .7
8 Conditioning of test pieces .7
9 Determination of local modulus of elasticity in bending .8
9.1 Test piece.8
9.2 Procedure.8
9.3 Expression of results.9
10 Determination of global modulus of elasticity in bending .10
10.1 Test piece.10
10.2 Procedure.10
10.3 Expression of results .11
11 Determination of shear modulus — Single span method .11
11.1 General.12
11.2 Determination of modulus of elasticity in bending.12
11.3 Determination of apparent modulus of elasticity .12
11.3.1 Test piece.12
11.3.2 Procedure.12
11.3.3 Expression of results.13
11.4 Calculation of shear modulus .13
12 Determination of shear modulus — Variable span method .14
12.1 General.14
12.2 Test piece.14
12.3 Procedure.14
12.4 Expression of results .14
12.4.1 General .14
12.4.2 Apparent modulus of elasticity.14
12.4.3 Shear modulus.15
13 Determination of bending strength.16
13.1 Test piece.16
13.2 Procedure.16
13.3 Expression of results .16
14 Determination of modulus of elasticity in tension parallel to the grain.16
14.1 Test piece.16
14.2 Procedure.16
14.3 Expression of results .17
15 Determination of tension strength parallel to the grain .17
15.1 Test piece.17
15.2 Procedure.17
15.3 Expression of results .18
16 Determination of modulus of elasticity in compression parallel to the grain.18
16.1 Test piece.18
16.2 Procedure.18
16.3 Expression of results.18
17 Determination of compression strength parallel to grain .19
17.1 Test piece.19
17.2 Procedure.19
17.3 Expression of results.19
18 Determination of tension and compression strengths perpendicular to the grain .19
18.1 Requirements for test pieces .19
18.1.1 Fabrication .19
18.1.2 Surface preparation .20
18.2 Procedure.20
18.3 Expression of results.22
18.3.1 Compression perpendicular to the grain.22
18.3.2 Tension perpendicular to the grain .22
19 Determination of modulus of elasticity perpendicular to the grain .22
19.1 Requirements for test pieces .22
19.2 Procedure.22
19.3 Expression of results.23
19.3.1 Compression perpendicular to the grain.23
19.3.2 Tension perpendicular to the grain .24
20 Determination of shear strength parallel to the grain.24
20.1 Requirements for test pieces .24
20.1.1 Fabrication .24
20.1.2 Surface preparation .24
20.2 Procedure.25
20.3 Expression of results.26
21 Test report.26
21.1 General.
...