SIST EN 15737:2010

Timber Structures - Test methods - Torsional strength and resistance to driving of screws

This standard specifies a test method to determine the torsional resistance to driving of screws in solid timber or glued laminated timber or other wood based materials.

Holzbauwerke - Prüfverfahren - Bruchdrehmoment und Eindrehwiderstand von Schrauben

Diese Norm legt ein Prüfverfahren zur Bestimmung des Widerstands gegen das Eindrehen von Schrauben in
Vollholz oder Brettschichtholz oder andere Holzwerkstoffe fest.

Structures en bois - Méthodes d'essai - Force de torsion et résistance au vissage

La présente Norme spécifie une méthode d’essai de détermination de la résistance de torsion des vis mises en place dans du bois massif, du bois lamellé-collé ou d’autres matériaux dérivés du bois.

Lesene konstrukcije - Metode preskušanja - Torzijska trdnost in odpornost pri privijanju lesnih vijakov

Ta standard opredeljuje metode preskušanja za ugotavljanje torzijske odpornosti proti zavijanju vijakov v trden les ali lepljen laminiran les ter druge na lesu osnovane materiale.

General Information

• Status: Published
• Public Enquiry End Date: 09-Jun-2009
• Publication Date: 16-Nov-2009
• ICS: 91.080.20 - Timber structures
• Technical Committee: KON - Structures
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 26-Aug-2009
• Due Date: 31-Oct-2009
• Completion Date: 17-Nov-2009
• Ref Project: EN 15737:2009 - Timber Structures - Test methods - Torsional resistance of driving in screws

Overview

SIST EN 15737:2010 is a European standard developed by CEN (European Committee for Standardization) that specifies a test method for determining the torsional resistance to driving screws in timber materials. This standard is essential for evaluating the performance of screws used in solid timber, glued laminated timber, and other wood-based materials, ensuring reliable and durable timber structures.

The standard defines procedures and criteria for measuring the torsional strength and resistance during screw insertion, which is crucial for the quality control of timber fasteners and structural timber components. It supports compliance with EN 14592 requirements related to dowel-type fasteners.

Key Topics

• Scope and Application
  SIST EN 15737:2010 applies to test methods for screws driven into solid timber, glued laminated timber, or other wood-based materials, focusing on torsional resistance characteristics.

• Test Setup and Equipment
  The method uses a moment cell to measure torque during screw insertion and displacement transducers to record vertical movement. The setup ensures precision by requiring:

  • Accuracy within 1% for torque measurement.
  • Controlled screw insertion speed (≤ 100 revolutions per minute).
  • Proper fixing of test specimens to avoid movement.

• Material and Sampling Requirements
  Test pieces should be conditioned to an equilibrium moisture content at 20 ± 2°C and 65 ± 5% relative humidity. Density and grain direction of the timber are critical to ensure representativeness and consistency.

• Test Procedure
  Screws are installed according to manufacturer instructions, including pre-drilling if necessary. Maximum torque recorded prior to screw head contact defines the torsional resistance.

• Reporting Requirements
  The test report must detail:

  • Screw specifications, material type, moisture content, and dimensions.
  • Test conditions including temperature, humidity, and equipment.
  • Results showing maximum insertion moment and penetration depth.
  • Influencing factors such as pre-drilling and screw orientation.

Applications

SIST EN 15737:2010 is widely applied in the construction, timber engineering, and fastener manufacturing industries for:

• Quality Control of Screws in Timber Structures
  Ensures screws meet performance requirements before market release or during production.

• Design Validation of Timber Connections
  Provides data for verifying connection strength and durability in structural engineering designs.

• Research and Development
  Facilitates performance comparison between different screw types, materials, and coatings under controlled conditions.

• Standard Compliance and Certification
  Assists manufacturers and testing laboratories in meeting European standards, linking to EN 14592 requirements for dowel-type fasteners in timber.

Related Standards

• EN 14592:2008 – Timber Structures – Dowel Type Fasteners – Requirements
  Specifies product requirements that complement the testing methods for screws as detailed in EN 15737.

• ISO 3130 – Wood – Determination of Moisture Content for Physical and Mechanical Tests
  Defines the procedure for determining moisture content, crucial for conditioning timber test specimens.

• ISO 3131 – Wood – Determination of Density for Physical and Mechanical Tests
  Provides methods for measuring the density of wood, essential for material characterization in testing.

Summary

SIST EN 15737:2010 offers a rigorous, standardized test method for assessing the torsional resistance of screws driven into timber-based materials. It supports enhanced safety, performance reliability, and compliance in timber construction by providing clear guidelines on sample preparation, test setup, execution, and reporting. This standard is an important tool for architects, engineers, manufacturers, and quality assurance professionals engaged in timber structure design and assessment.

Keywords: SIST EN 15737:2010, torsional resistance, screw insertion, timber structures, test methods, glued laminated timber, wood-based materials, screw testing, timber fasteners, structural timber, CEN standards.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Lesene konstrukcije - Metode preskušanja - Torzijska trdnost in odpornost pri privijanju lesnih vijakovHolzbauwerke - Prüfverfahren - Bruchdrehmoment und Eindrehwiderstand von SchraubenStructures en bois - Méthodes d'essai - Force de torsion et résistance au vissageTimber Structures - Test methods - Torsional strength and resistance to driving of screws91.080.20Lesene konstrukcijeTimber structuresICS:Ta slovenski standard je istoveten z:EN 15737:2009SIST EN 15737:2010en,fr,de01-januar-2010SIST EN 15737:2010SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15737August 2009ICS 91.080.20 English VersionTimber Structures - Test methods - Torsional resistance ofdriving in screwsStructures en bois - Méthodes d'essai - Force de torsion etrésistance au vissageHolzbauwerke - Prüfverfahren - Einschraubdrehmomentvon SchraubenThis European Standard was approved by CEN on 17 July 2009.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 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15737:2009: ESIST EN 15737:2010
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