iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
CEN

EN 14081-3:2005

(Main)

Timber structures - Strength graded structural timber with rectangular cross section - Part 3: Machine grading; additional requirements for factory production control

Timber structures - Strength graded structural timber with rectangular cross section - Part 3: Machine grading; additional requirements for factory production control

This document European Standard 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.

Holzbauwerke - Nach Festigkeit sortiertes Bauholz für tragende Zwecke mit rechteckigem Querschnitt - Teil 3: Maschinelle Sortierung; zusätzliche Anforderungen an die werkseigene Produktionskontrolle

Diese Europäische Norm legt Anforderungen an die werkseigene Produktionskontrolle 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. Die Anforderungen gelten neben den in EN 14081-1 angegebenen

Structures en bois - Bois de structure de section rectangulaire classé selon la résistance - Partie 3 : Classement mécanique - Exigences complémentaires relatives au contrôle de la production en usine

La présente Norme européenne fixe des exigences qui viennent s'ajouter à celles de l’EN 14081-1 sur le contrôle de production en usine des bois de structure de section rectangulaire classés par machine après sciage, rabotage ou autre, et dont les dimensions s'écartent des dimensions cibles correspondant à l'EN 336.

Lesene konstrukcije - Razvrščanje konstrukcijskega lesa pravokotnega prečnega prereza po trdnosti - 3. del: Strojno razvrščanje; dodatne zahteve za notranjo kontrolo proizvodnje

General Information

Status
Withdrawn
Publication Date
22-Nov-2005
Withdrawal Date
24-Jan-2012
ICS
79.040 - Wood, sawlogs and sawn timber
Technical Committee
CEN/TC 124 - Timber structures
Drafting Committee
CEN/TC 124 - Timber structures
Current Stage
9960 - Withdrawal effective - Withdrawal
Start Date
25-Jan-2012
Completion Date
25-Jan-2012
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
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 14081-3:2006 - Timber structures - Strength graded structural timber with rectangular cross section - Part 3: Machine grading; additional requirements for factory production control

Relations

Replaces
EN 518:1995 - Structural timber - Grading - Requirements for visual strength grading standards
Effective Date
22-Dec-2008
Replaces
EN 519:1995 - Structural timber - Grading - Requirements for machine strength graded timber and grading machines
Effective Date
22-Dec-2008
Replaced By
EN 14081-3:2012 - Timber structures - Strength graded structural timber with rectangular cross section - Part 3: Machine grading; additional requirements for factory production control
Effective Date
01-Feb-2012

Buy Standard

EN 14081-3:2006EN 14081-3:2006
PreviousNext
Standard
EN 14081-3:2006
English language
17 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

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 3: Maschinelle Sortierung; zusätzliche Anforderungen an die werkseigene ProduktionskontrolleStructures en bois - Bois de structure de section rectangulaire classé selon la résistance - Partie 3 : Classement mécanique - Exigences complémentaires relatives au contrôle de la production en usineTimber structures - Strength graded structural timber with rectangular cross section - Part 3: Machine grading; additional requirements for factory production control91.080.20Lesene konstrukcijeTimber structures79.040Les, hlodovina in žagan lesWood, sawlogs and sawn timberICS:Ta slovenski standard je istoveten z:EN 14081-3:2005SIST EN 14081-3:2006en01-maj-2006SIST EN 14081-3:2006SLOVENSKI
STANDARDSIST EN 519:1996SIST EN 518:19961DGRPHãþD

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14081-3November 2005ICS 79.040Supersedes EN 518:1995, EN 519:1995
English VersionTimber structures - Strength graded structural timber withrectangular cross section - Part 3: Machine grading; additionalrequirements for factory production controlStructures en bois - Bois de structure à sectionrectangulaire classé pour sa résistance - Partie 3:Classement mécanique; exigences supplémentaires enconcernant le contrôle de la production en usineHolzbauwerke - Nach Festigkeit sortiertes Bauholz fürtragende Zwecke mit rechteckigem Querschnitt - Teil 3:Maschinelle Sortierung; zusätzliche Anforderungen diewerkseigene ProduktionskontrolleThis European Standard was approved by CEN on 26 August 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2005 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14081-3:2005: ESIST EN 14081-3:2006

Example of cusum control charts.11 Annex B (normative)
Requirements for using control planks.15 B.1 General.15 B.2 Production control.15 B.3 The procedure for the use of a control plank.16 B.4 The non-continuous indicating property.16 B.5 Recorded usage of a control plank.17 B.6 Care of a control plank when not in use.17 B.7 Discarded control planks.17
cusum control parameter
B
cusum control parameter
Ba
cusum parameter associated with acceptable quality level
Br
cusum parameter associated with rejectable quality level Ep
actual modulus of elasticity measured in a proof load test (in N/mm2)
E0,mean
characteristic mean modulus of elasticity parallel to grain (in N/mm2)
Fp
proof load (in N)
K
cusum control parameter
La
run length in acceptable region for cusum control
Lr
run length in rejectable region for cusum control
N
cusum control parameter
Y
cusum control parameter
Z
cusum control parameter 5 Requirements for the operation, calibration and maintenance of a grading machine 5.1 No modifications shall be made to the machine that are in conflict with the machine manufacturer’s specification. 5.2 Access to all machine adjustments shall be limited to personnel authorised to operate or set up the machine. 5.3 The strength grading machine shall be regularly calibrated in accordance with the manufacturer's specification (see 5.2 in EN 14081-2:2005). 5.4 A strength grading machine shall only be fitted with spare parts equivalent to, or improving upon, the performance of those fitted at the time the machine was assessed by initial type testing. If spare parts are fitted that are not identical to those fitted at the time the machine was assessed by initial type testing, they shall be reassessed to establish their effect on grading accuracy. 5.5 The results of routine service and maintenance to the strength-grading machine and ancillary equipment shall be recorded together with the results of calibration checks. SIST EN 14081-3:2006
...

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 1912:2024(Main)
Structural Timber - Strength classes - Assignment of visual grades and species
SIST EN 1912:2024

This document lists visual strength grades, species and sources of timber, and specifies the strength classes to which they are assigned. The assignments listed are for strength classes documented in EN 338.
Structural timber that has previously been graded cannot be re-graded to the same or different grades unless the method of determining characteristic values has made allowances for changes to the timber population caused by the previous grading.
NOTE 1   Consequently, the assignments stated in this document apply to timber that has not been previously strength graded in a way that introduces a bias on the population of timber to be graded, as compared to ungraded material.
Species/grades or species combination/grades are assigned to strength classes in accordance with EN 14081-1 and supporting standards, such as EN 384.
This document contains a list of assignments but is not intended to be exhaustive.
NOTE 2   Timber graded by machine to EN 14081-1 is graded directly to the strength classes and marked accordingly. Machine grading is therefore not referenced in this document.

  • Standard
    40 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 14081-2:2018+A1:2022(Main + Amendment)
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 384:2016+A2:2022(Main + Amendment)
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 14081-3:2022(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 + Amendment)
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