EN 14081-2:2010+A1:2012

Timber structures - Strength graded structural timber with rectangular cross section - Part 2: Machine grading; additional requirements for initial type testing

This European Standard specifies requirements, additional to those in EN 14081-1, for initial type testing 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. This includes requirements for strength grading machines and test equipment for proof loading graded material.

Holzbauwerke - Nach Festigkeit sortiertes Bauholz für tragende Zwecke mit rechteckigem Querschnitt - Teil 2: Maschinelle Sortierung; zusätzliche Anforderungen an die Erstprüfung

Dieses Dokument legt Anforderungen, neben den in EN 14081-1 angegebenen, an die Erstprüfung für maschinell sortiertes Bauholz für tragende Zwecke mit rechteckigem Querschnitt fest, welches durch Sägen, Hobeln oder andere Produktionsverfahren hergestellt wurde und die zulässigen Maßabweichungen nach EN 336 einhält. Anforderungen an Maschinen, die nach Festigkeit sortieren, und an Prüfeinrichtungen für die Prüfung von Bauholz, das durch Prüfbelastung sortiert wurde ebenfalls enthalten.

Structures en bois - Bois de structure de section rectangulaire classé selon la résistance - Partie 2: Classement mécanique - Exigences supplémentaires concernant les essais de type initiaux

La présente Norme européenne spécifie les exigences, en complément des exigences établies dans l'EN 14081-1,
concernant les essais de type initiaux du bois de structure de sections rectangulaires classé par machine et façonné
par sciage, rabotage ou d'autres méthodes, et dont les dimensions s'écartent des dimensions cibles correspondant
à l'EN 336. Ceci comprend les exigences concernant les machines de classement de la résistance et le matériel
d'essai pour les matériaux classés en fonction de leur charge d'épreuve.

Lesene konstrukcije - Razvrščanje konstrukcijskega lesa pravokotnega prečnega prereza po trdnosti - 2. del: Strojno razvrščanje - Dodatne zahteve za začetni preskus proizvodnje

Ta evropski standard določa dodatne zahteve poleg zahtev iz standarda EN 14081-1 za začetni preskus proizvodnje v obratu strojno razvrščenega konstrukcijskega lesa s pravokotnim prečnim prerezom, oblikovanim z žaganjem, struženjem ali z drugimi metodami, in z odstopanji od ciljnih velikosti v skladu s standardom EN 336. To vključuje zahteve za stroje za razvrščanje po trdnosti in sklop preskuševalne opreme za materiale, razvrščene za preskus obremenljivosti.

General Information

• Status: Withdrawn
• Publication Date: 27-Nov-2012
• Withdrawal Date: 23-Oct-2018
• 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
• Completion Date: 24-Oct-2018
• 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 14081-2:2011+A1:2013 - Timber structures - Strength graded structural timber with rectangular cross section - Part 2: Machine grading; additional requirements for initial type testing

Relations

• Merged From: EN 14081-2:2010/FprA1 - Timber structures - Strength graded structural timber with rectangular cross section - Part 2: Machine grading - Additional requirements for initial type testing
• Effective Date: 19-Jan-2023
• Merged From: EN 14081-2:2010 - Timber structures - Strength graded structural timber with rectangular cross section - Part 2: Machine grading; additional requirements for initial type testing
• Effective Date: 19-Sep-2012
• Replaced By: EN 14081-2:2018 - Timber structures - Strength graded structural timber with rectangular cross section - Part 2: Machine grading; additional requirements for type testing
• Effective Date: 31-Oct-2018

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Holzbauwerke - Nach Festigkeit sortiertes Bauholz für tragende Zwecke mit rechteckigem Querschnitt - Teil 2: Maschinelle Sortierung; zusätzliche Anforderungen an die ErstprüfungStructures en bois - Bois de structure de section rectangulaire classé selon la résistance - Partie 2: Classement mécanique - Exigences supplémentaires concernant les essais de type initiauxTimber structures - Strength graded structural timber with rectangular cross section - Part 2: Machine grading; additional requirements for initial type testing79.040Les, hlodovina in žagan lesWood, sawlogs and sawn timberICS:Ta slovenski standard je istoveten z:EN 14081-2:2010+A1:2012SIST EN 14081-2:2011+A1:2013en,fr,de01-maj-2013SIST EN 14081-2:2011+A1:2013SLOVENSKI
STANDARDSIST EN 14081-2:20111DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14081-2:2010+A1
November 2012 ICS 79.040 Supersedes EN 14081-2:2010English Version
Timber structures - Strength graded structural timber with rectangular cross section - Part 2: Machine grading; additional requirements for initial type testing
Structures en bois - Bois de structure de section rectangulaire classé selon la résistance - Partie 2: Classement mécanique - Exigences supplémentaires concernant les essais de type initiaux
Holzbauwerke - Nach Festigkeit sortiertes Bauholz für tragende Zwecke mit rechteckigem Querschnitt - Teil 2: Maschinelle Sortierung; zusätzliche Anforderungen an die Erstprüfung This European Standard was approved by CEN on 5 May 2010 and includes Amendment 1 approved by CEN on 8 October 2012.
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-CENELEC 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-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14081-2:2010+A1:2012: ESIST EN 14081-2:2011+A1:2013

Calculation of elementary cost matrix values for 6.2.4.8 . 17A.1General . 17A.2Factors for wrongly upgraded pieces. 17A.3Factors for wrongly downgraded pieces . 17Annex B (informative)
Guidance on the procedure of initial type testing for machine controlled systems . 19B.1 Introduction . 19B.2 Guidance . 19Bibliography . 21 SIST EN 14081-2:2011+A1:2013

65 % 3.2 characteristic stiffness population mean value obtained under the same test conditions as defined in 3.1 3.3 critical feed speed speed within the intended usable range at which the grading machine is least accurate in measuring its indicating property 3.4 depth dimension perpendicular to the longitudinal axis of a timber beam, in the plane of the bending forces SIST EN 14081-2:2011+A1:2013

IP measurement or combination of measurements made by the grading machine, which are closely related to one or more of the grade determining properties NOTE For grading machines which compute and predict values of the grade determining properties directly from numerous measuring devices, the indicating property may be a predicted value of a grade determining property. 3.7 optimum grade highest grade, of those for which settings are required, to which a piece of timber can be assigned, such that the grade determining properties of the graded sample will meet the values required for the grade 3.8 settings values of the parameters used to set the machine to grade timber, which are mathematically related to the indicating property 3.9 sub-sample number of specimens of timber of one species or species combination, from one growth area or source of production 3.10 thickness lesser dimension perpendicular to the longitudinal axis of a piece of timber 4 Symbols b width of cross section (in millimetres)
E theoretical modulus of elasticity (in newtons per square millimetre)
Ep actual modulus of elasticity measured in a proof load test (in newtons per square millimetre)
Eassigned mean modulus of elasticity for assigned grade (in newtons per square millimetre) Eoptimum mean modulus of elasticity for optimum grade (in newtons per square millimetre) E0,mean characteristic mean modulus of elasticity parallel to grain (in newtons per square millimetre)
F applied force (in newtons)
Fp proof load (in newtons)
fm,k characteristic bending strength (in newtons per square millimetre)
fp proof stress (in newtons per square millimetre)
h depth of cross section (in millimetres) SIST EN 14081-2:2011+A1:2013

w deflection or deformation (in millimetres)
βach achieved safety in
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