EN 14081-1:2016+A1:2019
(Main)Timber structures - Strength graded structural timber with rectangular cross section - Part 1: General requirements
Timber structures - Strength graded structural timber with rectangular cross section - Part 1: General requirements
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.
Holzbauwerke - Nach Festigkeit sortiertes Bauholz für tragende zwecke mit rechteckigem Querschnitt - Teil 1: Allgemeine Anforderungen
Diese Europäische Norm legt Anforderungen an visuell oder maschinell nach der Festigkeit sortiertes Bauholz für tragende Zwecke mit rechteckigem Querschnitt fest, das durch Sägen, Hobeln oder andere Verfahren erzeugt wurde und Querschnittsmaße nach EN 336 aufweist (nachfolgend als „Bauholz für tragende Zwecke“ bezeichnet).
Die vorliegende Europäische Norm enthält Festlegungen für Prüfverfahren, die Bewertung und Überprüfung der Leistungsbeständigkeit sowie die Kennzeichnung von Bauholz für tragende Zwecke.
ANMERKUNG 1 Für maschinell nach der Festigkeit sortiertes Bauholz sind zusätzliche Festlegungen für die Typprüfung (TT) in EN 14081 2 sowie für die werkseigene Produktionskontrolle (WPK) in EN 14081 3 angegeben.
ANMERKUNG 2 Ein Annahmeverfahren für die Prüfung von Losen, das für Lieferungen von Bauholz für tragende Zwecke verwendet werden darf, ist in EN 14358 angegeben.
Diese Europäische Norm legt Sortiermerkmale fest, für die in den Normen zur visuellen Sortierung Grenzwerte anzugeben sind.
Diese Europäische Norm gilt für Bauholz für tragende Zwecke, das entweder unbehandelt ist oder gegen biologischen Befall behandelt wurde.
Diese Europäische Norm gilt nicht für:
— Bauholz, das mit Feuerschutzmitteln behandelt wurde, um sein Verhalten bei Brandeinwirkung zu verbessern;
— thermisch und/oder chemisch modifiziertes Bauholz;
— keilgezinktes Bauholz für tragende Zwecke.
Structures en bois - Bois de structure à section rectangulaire classé pour sa résistance - Partie 1 : Exigences générales
La présente Norme européenne prescrit les exigences applicables au bois de structure à section rectangulaire classé soit visuellement soit par machine, profilé par sciage, rabotage ou d’autres méthodes, et ayant des dimensions minimales de section conformes à l'EN 336 (désigné comme bois de structure dans les articles suivants).
La présente Norme européenne comprend des dispositions relatives aux méthodes d'essai, à l'évaluation et la vérification de la constance des performances et au marquage du bois de structure.
NOTE 1 Pour le bois dont la résistance est classée par machine, des dispositions supplémentaires pour les essais de type (TT) sont spécifiées dans l'EN 14081-2 et pour le contrôle de production interne (CPU) dans l'EN 14081-3.
NOTE 2 Une procédure d’acceptation pour la vérification d’un lot est indiquées dans l’EN 14358 et celle-ci peut être utilisée pour la livraison de bois de structure.
La présente Norme européenne identifie, les caractéristiques pour lesquelles des limites sont établies dans les règles de classement visuel.
La présente Norme européenne couvre le bois de structure, non traité ou traité contre les attaques biologiques.
La présente Norme européenne ne couvre pas :
- le bois traité par des produits ignifuges pour améliorer sa performance au feu ;
- les bois modifiés thermiquement et/ou chimiquement ;
- le bois avec aboutages à entures multiples.
Lesene konstrukcije - Po trdnosti razvrščen konstrukcijski les pravokotnega prečnega prereza - 1. del: Splošne zahteve
Ta evropski standard določa zahteve za vizualno in strojno razvrščen konstrukcijski les pravokotnega prečnega prereza po trdnosti, ki je oblikovan z žaganjem, struženjem ali z drugimi metodami in izpolnjuje zahteve standarda EN 336 glede najmanjših dimenzij prečnega prereza.
Ta evropski standard vključuje določbe za preskusne metode, ocenjevanje in preverjanje nespremenljivosti lastnosti ter označevanjem po trdnosti razvrščenega konstrukcijskega lesa.
OPOMBA: V standardu EN 14081-2 so za strojno razvrščen konstrukcijski les po trdnosti podane dodatne določbe za tipsko preskušanje (TT), v standardu EN 14081-3 pa za kontrolo proizvodnje v obratu (FPC).
Ta evropski standard opredeljuje lastnosti, za katere so podane omejitve v standardih za vizualno razvrščanje. Ta evropski standard obravnava pravokotni konstrukcijski les, zaščiten ali nezaščiten pred biološkimi dejavniki.
Ta evropski standard ne obravnava:
– lesa, obdelanega z zaščitnimi sredstvi proti ognju, ki izboljšujejo odpornost proti ognju;
– zobato spojenega lesa.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2019
Nadomešča:
SIST EN 14081-1:2016
Lesene konstrukcije - Po trdnosti razvrščen konstrukcijski les pravokotnega
prečnega prereza - 1. del: Splošne zahteve
Timber structures - Strength graded structural timber with rectangular cross section -
Part 1: General requirements
Holzbauwerke - Nach Festigkeit sortiertes Bauholz für tragende zwecke mit
rechteckigem Querschnitt - Teil 1: Allgemeine Anforderungen
Structures en bois - Bois de structure à section rectangulaire classé pour sa résistance -
Partie 1 : Exigences générales
Ta slovenski standard je istoveten z: EN 14081-1:2016+A1:2019
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.
EN 14081-1:2016+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2019
EUROPÄISCHE NORM
ICS 79.040 Supersedes EN 14081-1:2016
English Version
Timber structures - Strength graded structural timber
with rectangular cross section - Part 1: General
requirements
Structures en bois - Bois de structure à section Holzbauwerke - Nach Festigkeit sortiertes Bauholz für
rectangulaire classé pour sa résistance - Partie 1 : tragende zwecke mit rechteckigem Querschnitt - Teil 1:
Exigences générales Allgemeine Anforderungen
This European Standard was approved by CEN on 9 February 2016 and includes Amendment 1 approved by CEN on 14 May
2019.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14081-1:2016+A1:2019 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Symbols . 8
5 Requirements for structural timber . 9
5.1 Mechanical resistance . 9
5.1.1 General . 9
5.1.2 Visual strength grading . 9
5.1.3 Machine strength grading . 9
5.2 Fire resistance (charring rate) .11
5.3 Reaction to fire .11
5.4 Release of dangerous substances .12
5.5 Biological durability .12
5.5.1 Structural timber without preservative treatment .12
5.5.2 Structural timber with preservative treatment .12
5.6 Geometrical data .12
6 Assessment and verification of constancy of performance –AVCP .13
6.1 General .13
6.2 Type testing .13
6.2.1 General .13
6.2.2 Test samples, testing and compliance criteria .13
6.2.3 Test reports .14
6.2.4 Shared other party results .15
6.3 Factory production control (FPC) .15
6.3.1 General .15
6.3.2 Requirements .15
6.3.3 Product specific requirements .19
6.3.4 Initial inspection of factory and of FPC .20
6.3.5 Continuous surveillance of FPC .20
6.3.6 Procedure for modifications .20
7 Marking .21
7.1 Marking methods .21
7.2 Information on the timber (method A) or on the package (method B) .21
7.3 Information in the documents accompanying strength graded structural timber .22
8 Environmental issues .23
Annex A (normative) Requirements for strength reducing characteristics for visual grading
standards .24
A.1 Limitations for strength-reducing characteristics .24
A.1.1 Knots .24
A.1.2 Slope of grain .24
A.1.3 Density and rate of growth . 24
A.1.4 Fissures . 25
A.2 Limitations for geometrical characteristics . 25
A.2.1 Wane . 25
A.2.2 Warp . 25
A.3 Limitations for biological characteristics . 26
A.4 Other characteristics . 26
A.4.1 Reaction wood . 26
A.4.2 Other criteria . 26
Annex B (normative) Marking codes for species . 27
B.1 Marking codes for single species . 27
B.2 Marking codes for species combination . 28
Annex C (normative) Measurement of moisture content . 30
C.1 General . 30
C.2 Measurement of moisture content of timber during production. 30
Annex ZA (informative) Relationship of this European Standard with Regulation (EU)
No.305/2011 . 31
ZA.1 Scope and relevant characteristics . 31
ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP) . 33
ZA.3 Assignment of AVCP tasks . 33
Bibliography . 36
European foreword
This document (EN 14081-1:2016) has been prepared by Technical Committee CEN/TC 124 “Timber
structures”, the secretariat of which is held by AFNOR.
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 February 2020, and conflicting national standards
shall be withdrawn at the latest by May 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document includes Amendment 1, approved by CEN on 2019-05-14.
This document supersedes !EN 14081-1:2016".
The start and finish of text introduced or altered by amendment is indicated in the text by tags !".
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Regulation n°305/2011.
For relationship with EU Regulation, see informative Annex ZA, which is an integral part of this
document.
EN 14081-4:2009 will be withdrawn and replaced by 5.1.3, paragraph 2 of this document.
Compared to EN 14081-1:2005+A1:2011, the following modifications have been made:
— new Clause 6 for Assessment and Verification of Constancy of Performance linked to the CPR;
— Annex ZA has been adapted to the CPR;
— new clauses on Fire Resistance, release of dangerous substances, geometrical data and
environmental issues have been added;
— marking codes for species combinations have been moved to Annex B;
— improvement of several definitions.
Other parts of the series of EN 14081 are:
— EN 14081-2, Timber structures - Strength graded structural timber with rectangular cross section -
Part 2: Machine grading; additional requirements for initial type testing;
— EN 14081-3, Timber structures - Strength graded structural timber with rectangular cross section -
Part 3: Machine grading; additional requirements for factory production control.
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,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany,
...
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