EN 1315:2010

Dimensional classification of round timber

This European Standard specifies a dimensional classification for round timber (softwood and hardwood) for which the intended use is not known.

Dimensions-Sortierung von Rundholz

Diese Europäische Norm legt die Sortierung nach Maßen von Rundholz (Nadel- und Laubholz) fest, bei dem die beabsichtigte Verwendung nicht bekannt ist.

Classement dimensionnel des bois ronds

La présente norme européenne spécifie un classement dimensionnel pour les bois ronds (bois résineux et bois feuillus) pour lesquels on ne connaît pas l’utilisation finale.

Razvrščanje po izmerah za okrogli les

Ta evropski standard določa razvrščanje po izmerah za okrogli les (mehki in trdi les), katerega namen uporabe ni znan.

General Information

• Status: Published
• Publication Date: 26-Jan-2010
• Withdrawal Date: 30-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 4 - Round timber
• Current Stage: 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
• Start Date: 02-Dec-2025
• Completion Date: 02-Dec-2025
• Ref Project: SIST EN 1315:2010 - Dimensional classification of round timber

Relations

• Replaces: EN 1315-1:1997 - Dimensional classification - Part 1: Hardwood round timber
• Effective Date: 30-Jan-2010
• Replaces: EN 1315-2:1997 - Dimensional classification - Part 2: Softwood round timber
• Effective Date: 30-Jan-2010

Overview

EN 1315:2010 is a European standard developed by the European Committee for Standardization (CEN) that specifies the dimensional classification of round timber, covering both softwood and hardwood species. This standard applies specifically to round timber whose intended use is not yet determined. It provides a clear, standardized system based primarily on mid-diameter measurements, either under bark or over bark, facilitating uniform classification across European markets.

Adopted in January 2010 and superseding previous versions EN 1315-1:1997 and EN 1315-2:1997, EN 1315:2010 harmonizes the classification into one comprehensive document. The standard is essential for manufacturers, traders, and users involved in the handling, trading, and processing of round timber, ensuring clarity and consistency in timber categorization.

Key Topics

• Dimensional Classification System
  EN 1315:2010 classifies round timber based on the mid diameter measurement, providing two primary classification letters:

  • D classes: Measurement under bark
  • R classes: Measurement over bark (requires contractual agreement on bark allowance)

• Mid Diameter Classes
  The classification ranges from very small diameters to large timber, with classes denoted as D0 to D8 (under bark) and R0 to R8 (over bark), according to diameter in centimeters-for example, D0 and R0 represent timber below 10 cm, while D8 and R8 represent timber 80 cm and above.

• Measurement Methods
  The mid diameter must be measured according to the method outlined in EN 1309-2, ensuring accurate, repeatable results. Bark allowance considerations for over bark measurements include agreed reductions from diameter or bark allowance tables.

• Normative References
  EN 1315:2010 relies on related terminology and measurement standards such as:

  • EN 844 series (Terminology for round and sawn timber)
  • EN 1309-2 (Methods for measuring round timber dimensions)

• Updated Features from Previous Editions

  • Merging of two earlier standards into a single document
  • Expanded diameter classes (addition of D7/R7 and D8/R8)
  • Removal of length classification for simplicity

Applications

• Timber Trading and Procurement
  The standard enables trading partners to classify round timber consignments consistently, facilitating transparent communication about timber size and quality without predetermined usage.

• Forestry and Logging Operations
  Helps forestry managers categorize harvested timber efficiently based on diameter, aiding inventory management and transport planning.

• Wood Processing Industry
  Sawmills and manufacturers use the classification to optimize sawlog selection, processing parameters, and yield estimation.

• Quality Control and Timber Inspection
  Inspectors apply EN 1315:2010 classifications to standardize reports and assessments, improving reliability in timber quality feedback.

• Regulatory Compliance
  Adhering to this standard supports conformity with European norms, enhancing market acceptance and legal compliance for timber products.

Related Standards

• EN 844 series
  Defines essential timber terminology consistent with EN 1315 classifications.

• EN 1309-2
  Specifies detailed measurement procedures for round timber used in diameter classification.

• EN 1863 series
  Related to sawn timber classifications and marking, often used downstream of round timber classification.

• ISO 4471
  International standard relating to round timber classification and measurement, providing harmonization opportunities outside Europe.

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Keywords: EN 1315:2010, round timber classification, dimensional classification, timber standards, European timber classification, round wood measurement, softwood classification, hardwood classification, mid diameter timber classes, timber measurement standard, CEN timber standards.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Dimensions-Sortierung von RundholzClassement dimensionnel des bois rondsDimensional classification of round timber79.040Les, hlodovina in žagan lesWood, sawlogs and sawn timberICS:Ta slovenski standard je istoveten z:EN 1315:2010SIST EN 1315:2010en,fr,de01-april-2010SIST EN 1315:2010SLOVENSKI
STANDARDSIST EN 1315-2:20001DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1315
January 2010 ICS 79.040 Supersedes EN 1315-1:1997, EN 1315-2:1997English Version
Dimensional classification of round timber
Classement dimensionnel des bois ronds
Dimensions-Sortierung von Rundholz This European Standard was approved by CEN on 18 December 2009.
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 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 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
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B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1315:2010: ESIST EN 1315:2010
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