CEN/TS 14464:2010

Sawn timber - Method for assessment of case-hardening

This Technical Specification defines a destructive method of assessing the case-hardening of a piece of sawn timber with reference to the distortion measured in a slice taken from the piece.
This Technical Specification is applicable to sawn timber and timber which has been planed or surfaced by other means. It applies to both hardwood and softwood with a thickness not greater than 100 mm.

Schnittholz - Verfahren zur Ermittlung der Verschalung

Diese Technische Spezifikation legt ein zerstörendes Verfahren zur Bestimmung der Verschalung in einem Stück Schnittholz, unter Verwendung der an einem Querriegel ermittelten Deformation, fest.
Dieses Dokument gilt für Schnittholz und für Holz, welches gehobelte oder anderweitig bearbeitete Oberflächen besitzt. Es gilt für Laub- und Nadelholz mit einer Dicke bis zu 100 mm.

Bois sciés - Méthode de mesure de la cémentation

Cette spécification technique définit une méthode destructive permettant la mesure de la cémentation d’une pièce de bois scié en référence à la déformation mesurée dans une section extraite de la pièce.
Cette spécification technique s’applique aux bois sciés et aux bois rabotés ou surfacés par d’autres moyens. Il s’applique à la fois aux bois feuillus et aux bois résineux d’une épaisseur inférieure à 100 mm.

Žagani les - Metoda ocenjevanja zaskorjenosti

Ta tehnična specifikacija določa destruktivno metodo za ocenjevanje zaskorjenosti kosa žaganega lesa glede na ukrivljanje, merjeno na rezini, vzeti s kosa. Ta tehnična specifikacija se uporablja za žagan les in les, ki je bil zglajen ali pooblan na druge načine. Uporablja se tako za trdi les kot mehki les debeline največ 100 mm.

General Information

• Status: Published
• Publication Date: 20-Jul-2010
• ICS: 79.040 - Wood, sawlogs and sawn timber
• Technical Committee: CEN/TC 175 - Round and sawn timber
• Drafting Committee: CEN/TC 175/WG 1 - General matters, definitions, measurement methods
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 20-May-2025
• Completion Date: 23-Sep-2025
• Ref Project: SIST-TS CEN/TS 14464:2010 - Sawn timber - Method for assessment of case-hardening

Relations

• Replaces: ENV 14464:2002 - Sawn timber - Method for assessment of case-hardening
• Effective Date: 24-Jul-2010

Overview

CEN/TS 14464:2010 is a European Technical Specification developed by the European Committee for Standardization (CEN) that defines a destructive method for assessing case-hardening in sawn timber. Case-hardening refers to internal stresses in timber that cause distortion or warping when the wood is sliced. This standard provides a standardized test procedure to measure such stresses by analyzing distortion in slices taken from timber pieces.

The specification applies to sawn timber, including planed or surfaced wood, covering both hardwood and softwood with thicknesses up to 100 mm. It supersedes ENV 14464:2002 and supports quality control and performance evaluation of timber in the construction, manufacturing, and wood processing industries.

Key Topics

• Scope and Applicability: The method is designed for assessing case-hardening in sawn wood, intended for timber pieces no thicker than 100 mm. Both hardwood and softwood qualify.
• Destructive Test Method: The process involves cutting a test slice from timber, dividing it, conditioning, and placing parts on a jig to measure distortion.
• Test Apparatus:
  • Calibrated measuring device (graduated to 0.1 mm)
  • Specialized jig to hold timber slices
  • Slicing devices such as band saw or circular saw, along with cutting tools
• Test Procedure:
  • Cut a 15 mm thick slice at least 30 cm from the timber ends or mid-point for shorter pieces.
  • Ensure slice is defect-free (no knots, resin pockets, or reaction wood).
  • Divide and mark slice into two parts for realignment.
  • Condition slice in a sealed bag for 24 hours (softwood) or 48 hours (hardwood).
  • Measure distortion using the jig and calculate results accounting for jig pin spacing.
• Result Interpretation: The distortion measurement, adjusted by a multiplication factor, indicates the magnitude and direction of case-hardening stresses.

Applications

• Quality Control in Timber Processing: Ensures sawn wood meets mechanical and dimensional stability standards before use in construction or manufacturing.
• Structural Timber Assessment: Helps assess internal stresses that may lead to warping or failure in wood used for structural components.
• Research and Development: Used by researchers studying drying processes, treatment methods, and wood material properties.
• Surface Treatment Evaluation: Enables verification of conditioning treatments intended to reduce internal stresses and improve dimensional stability.
• Timber Grading and Certification: Assists certification bodies and grading authorities in assessing wood fitness for specific applications.

Related Standards

• EN 844 Series: Defines terminology related to round and sawn timber, including moisture content (EN 844-4:1997), dimensions (EN 844-6:1997), and features of sawn timber (EN 844-9:1997).
• ENV 14464:2002: The superseded version of this technical specification for assessing case-hardening.
• Other Wood Standards: Standards covering moisture measurement, surface treatments, and grading methodology applicable to quality assurance in timber processing.

---

By following CEN/TS 14464:2010, industry professionals can reliably quantify case-hardening to ensure the usability and performance of sawn timber. This specification is essential for wood product manufacturers, quality inspectors, and timber researchers focused on optimizing timber stability and minimizing defects related to internal stress.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2010
1DGRPHãþD
SIST ENV 14464:2003
Žagani les - Metoda ocenjevanja zaskorjenosti
Sawn timber - Method for assessment of case-hardening
Schnittholz - Verfahren zur Ermittlung der Verschalung
Bois sciés - Méthode de mesure de la cémentation
Ta slovenski standard je istoveten z: CEN/TS 14464:2010
ICS:
79.040 Les, hlodovina in žagan les Wood, sawlogs and sawn
timber
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN/TS 14464
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
July 2010
ICS 79.040 Supersedes ENV 14464:2002
English Version
Sawn timber - Method for assessment of case-hardening
Bois sciés - Méthode de mesure de la cémentation Schnittholz - Verfahren zur Ermittlung der Verschalung
This Technical Specification (CEN/TS) was approved by CEN on 15 May 2010 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.

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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 14464:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Terms and definitions .4
4 Slicing test method .5
4.1 Apparatus .5
4.2 Procedure .5
4.3 Calculation and expression of results .7

Foreword
This document (CEN/TS 14464:2010) has been prepared by Technical Committee CEN/TC 175 “Round and
sawn timber”, the secretariat of which is held by AFNOR.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes ENV 14464:2002.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: 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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.
1 Scope
This Technical Specification defines a destruc
...