Licensed Copy: RRICTISQ RRICTISQ, ISO/Exchange Russia, 01 December 2004, Uncontrolled Copy, (c) BSI

Similar documents
Hot rolled square steel bars for general purposes Dimensions and tolerances on shape and dimensions

Licensed Copy: RRICTISQ RRICTISQ, ISO/Exchange Russia, 23 November 2004, Uncontrolled Copy, (c) BSI

Gas cylinders 17E taper thread for connection of valves to gascylinders

Textiles Tests for colour fastness

English version. Steel and steel products Location and preparation of samples and test pieces for mechanical testing (ISO 377:1997)

Steel wire for general fencing purposes

This document is a preview generated by EVS

Screw and washer assemblies made of steel with plain washers Washer hardness classes 200 HV and 300 HV

COPYRIGHT Danish Standards. NOT FOR COMMERCIAL USE OR REPRODUCTION. DS/EN ISO 9431:1999

Plain bearings Wrapped bushes

This document is a preview generated by EVS

Licensed Copy: Akin Koksal, Bechtel Ltd, 09 December 2002, Uncontrolled Copy, (c) BSI

Plain bearings Wrapped bushes

DEUTSCHE NORM DIN EN ISO 10447

This document is a preview generated by EVS

English Version EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

ILNAS-EN 14136: /2004

SVENSK STANDARD SS-EN Flexibla tätskikt Bestämning av längd, bredd och rakhet Del 1: Bitumenbaserade tätskikt för tak

This document is a preview generated by EVS

This document is a preview generated by EVS

This document is a preview generated by EVS

This document is a preview generated by EVS

Textiles Determination of the abrasion resistance of fabrics by the Martindale method

Fästelement Sextandhålsskruvar med cylinderhuvud (ISO 14580:2001) Hexalobular socket cheese head screws (ISO 14580:2001)

This document is a preview generated by EVS

Metric sine bars and sine tables (excluding compound tables)

Fasteners Torque/clamp force testing (ISO 16047:2005)

Plywood Limningskvalitet Del 1: Provning. Plywood Bonding quality Part 1: Test methods

Fästelement Sexkanthålsskruvar med sänkhuvud (ISO 10642:2004) Hexagon socket countersunk head screws (ISO 10642:2004)

Färg och lack Bestämning av härdighet mot filiformkorrosion Del 1: Stålunderlag (ISO :2000)

ISO INTERNATIONAL STANDARD. Non-destructive testing Qualification of radiographic film digitisation systems Part 2: Minimum requirements

Hexagon socket set screws with cup point (ISO 4029:2003)

Hexagon socket button head screws (ISO 7380:2004)

English version. Audio, video and similar electronic apparatus - Safety requirements

Fästelement Sexkanthålsskruvar (ISO 4762:2004) Hexagon socket head cap screws (ISO 4762:2004)

This document is a preview generated by EVS

Gas cylinders 17E and 25E taper threads for connection of valves to gas cylinders

This document is a preview generated by EVS

Tolerances on dimensions, shape and mass for hot rolled steel plates 3mm thick or above

This document is a preview generated by EVS

Textiles Tests for colour fastness

This document is a preview generated by EVS

DEUTSCHE NORM May Welds - Working positions Definitions of angles of slope and rotation (IS : 1993) English version of DIN EN IS0 6947

SVENSK STANDARD SS-EN

Tandvård Roterande instrument Del 2: Putsborr (ISO :2003) Dentistry Rotary bur instruments Part 2: Finishing burs (ISO :2003)

Injection containers and accessories Part 1: Injection vials made of glass tubing (ISO :2003)

This document is a preview generated by EVS

This document is a preview generated by EVS

This document is a preview generated by EVS

ISO INTERNATIONAL STANDARD. Nomenclature Specification for a nomenclature system for medical devices for the purpose of regulatory data exchange

This document is a preview generated by EVS

This document is a preview generated by EVS

SVENSK STANDARD SS-EN ISO :2004

SVENSK STANDARD SS-EN :2004. Stållinor Säkerhet Del 10: Spirallinor för allmänna byggnadsändamål

Soldering and brazing materials Methods for the sampling of soft solders for analysis (ISO 10564:1993)

Communication systems for meters and remote reading of meters - Part 4: Wireless meter readout (Radio meter reading for operation in SRD bands)

This document is a preview generated by EVS

Ergonomiska principer vid utformning av arbetssystem (ISO 6385:2004) Ergonomic principles in the design of work systems (ISO 6385:2004)

SVENSK STANDARD SS-EN ISO :2004. Ögonoptik Råkantade färdiga glasögonglas Del 2: Progressiva glas (ISO :2004)

This document is a preview generated by EVS

SVENSK STANDARD SS-EN 1904

This document is a preview generated by EVS

This document is a preview generated by EVS

This document is a preview generated by EVS

Belysningsstolpar Del 2: Allmänna krav och mått

Munkaanyag

Document comprises 11 pages 03.15

Acoustics Rating of sound insulation in buildings and of building elements

Non-destructive testing of welds Radiographic testing of welded joints

Rolling bearings Accessories for sleeve type linear ball bearings

Non-destructive testing of steel tubes

Machine tools Test conditions for external cylindrical centreless grinding machines Testing of the accuracy

Gummi- eller plastbelagda tyger Bestämning av rivhållfasthet Del 1: Metoder med konstant hastighet (ISO :2003)

Geregistreerde Belgische norm

ISO INTERNATIONAL STANDARD

Non-destructive testing Radioscopic testing

Munkaanyag

Provning av betong i färdig konstruktion Del 4: Bestämning av ultraljudhastighet

IS INTERNATIONAL STANDARD. Welding - General tolerances for welded constructions - Dimensions for lengths and angles - Shape and position

This document is a preview generated by EVS

Ståltråd och trådprodukter för stängsel Del 7: Svetsade paneler av tråd För inhägnader

This document is a preview generated by EVS

ISO INTERNATIONAL STANDARD

SVENSK STANDARD SS-EN 13975

SVENSK STANDARD SS-EN ISO

This British Standard, having been prepared under the direction of the Iron and Steel Standards Policy Committee, was published under the authority of

English Version. Conservation of cultural property - Main general terms and definitions concerning conservation of cultural property

ISO INTERNATIONAL STANDARD

SVENSK STANDARD SS-EN 12892

Förtillverkade betongprodukter Balkar och pelare. Precast concrete products Linear structural elements

SVENSK STANDARD SS-EN ISO 6103

SVENSK STANDARD SS-EN ISO 2692:2007

SVENSK STANDARD SS-EN 14136:2004

Electromagnetic compatibility Product family standard for lifts, escalators and moving walks Immunity

This document is a preview generated by EVS. Textiles - Tests for colour fastness - Part E02: Colour fastness to sea water (ISO 105-E02:2013)

Ritningsregler Järnvägar Del 1: Allmänna principer. Technical drawings Railway applications Part 1: General Principles

Electromagnetic compatibility (EMC)

ISO INTERNATIONAL STANDARD. Geotechnical investigation and testing Field testing Part 3: Standard penetration test

Workbenches for laboratories Dimensions, safety requirements and test methods

Transcription:

BRITISH STANDARD BS EN 392:1995 Glued laminated timber Shear testof glue lines The European Standard EN 392:1995 has the status of a British Standard

BSEN 392:1995 Committees responsible for this British Standard This British Standard, having been prepared under the direction of the Sector Board for Building and Civil Engineering, was published under the authority of the Standards Board and comes into effect on 15 July 1995 BSI 07-1999 The following BSI references relate to the work on this standard: Committee reference B/518/3 Draft for comment 90/16019 DC ISBN 0 580 24286 2 The preparation of this British Standard was entrusted by Technical Committee B/518, Structural timber, to Subcommittee B/518/3, Glued laminated timber, upon which the following bodies were represented: British Adhesives and Sealants Association British Plastics Federation British Woodworking Federation Department of the Environment (Building Research Establishment) Glued Laminated Timber Association Institution of Civil Engineers Timber Research and Development Association Timber Trade Federation Wood Panel Products Federation Coopted members Amendments issued since publication Amd. No. Date Comments

BS EN 392:1995 Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 392 3 BSI 07-1999 i

BSEN 392:1995 National foreword This British Standard has been prepared by Subcommittee B/518/3 and is the English language version of EN 392:1995 Glued laminated timber Shear test of glue lines, published by the European Committee for Standardization (CEN). This standard is technically equivalent to Appendix B of BS4169:1988. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 7 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. ii BSI 07-1999

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 392 January 1995 ICS 79.060.00 Descriptors: Laminated boards, gluing, quality control, shear tests, shear strength English version Glued laminated timber Shear test of glue lines Bois lamellé collé Essai de cisaillenent des joints de collage Brettschichtholz Scherprüfung der Leimfugen This European Standard was approved by CEN on 1995-01-09. 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 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 translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. 1995 Copyright reserved to CEN members CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels Ref. No. EN 392:1995 E

EN 392:1995 Foreword This European Standard was prepared by CEN TC 124, Timber structures, of which the secretariat is held by DS. 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 July 1995, and conflicting national standards shall be withdrawn at the latest by July 1995. NOTE 2 It is considered desirable to maintain the same clause numbers consistently throughout this series of standards. Consequently, some clauses are void in this edition of this standard, but it is envisaged that future editions may need to include text in these clauses. No existing European Standard is superseded. In accordance with the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 4 Symbols 3 5 Requirements 3 6 Shear test of glue lines 3 6.1 Principle 3 6.2 Apparatus 3 6.3 Preparation of test pieces 3 6.4 Procedure 7 6.5 Results 7 6.6 Test report 7 Figure 1 Shearing tool with a test bar inserted 4 Figure 2 The normal test piece, a test bar, and the numbering of the individual glue lines for a test bar cut at the bottom of the cross section 4 Figure 3 Drill core with machined parallel plane surfaces 5 Figure 4 Test bars to be cut from a full cross-sectional specimen 6 Figure 5 Suggested identification showing the location of the test bars in the cross section in a member glued horizontally 6 Figure 6 Additional identification with numbers showing the location of the glulam member during the cramping 7 Table 1 Number of test bars 5 BSI 07-1999

EN392:1995 1 Scope This standard specifies a method for measuring the shear strength of the glue line parallel to the direction of grain. The standard is applicable in the field of continuous quality control of the glue line. 2 Normative references This European Standard incorporates by dated or undated references, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 386, Glued laminated timber Performance requirements and minimum production requirements. ISO 554:1976, Standard atmospheres for conditioning and/or testing Specifications. 3 Definitions For the purposes of this standard the following definitions apply. 3.1 drill core specimen of cylindrical shape drilled out of the glulam 3.2 glued laminated timber (glulam) structural member formed by bonding together timber laminations with the grain essentially parallel 3.3 test bar test piece of rectangular right-angled prismatic form 3.4 wood failure rupture in or between wood fibres 3.5 wood failure percentage percentage of the wood failure area in relation to the total sheared area 4 Symbols 5 Requirements None. 6 Shear test of glue lines 6.1 Principle A shear stress is applied at the glue line until failure occurs. 6.2 Apparatus 6.2.1 Testing machine A calibrated testing machine capable of applying a compressive force to the shearing tool, referred to in6.2.2. The accuracy of measuring the maximum load shall be better than ± 3 %. 6.2.2 Shearing tool A shearing tool as illustrated in Figure 1. The cylindrical bearing shall be self-aligning so that the test piece is loaded at the end grain with a stress field uniform in the width direction. 6.3 Preparation of test pieces 6.3.1 Test pieces Special care shall be taken in preparing the test pieces to ensure that the loaded surfaces are smooth and parallel to each other and perpendicular to the grain direction. The test piece shall be of the form shown in either Figure 2 or Figure 3. That depicted in Figure 2 shows the normal test piece. 6.3.2 Sampling 6.3.2.1 Test bars shall be cut from the full cross-sectional specimens as described in EN 386. At least three glue lines in each of the lower, middle and upper part shall be tested. If there are less than 10 laminations all glue lines shall be tested. BSI 07-1999 3 A a b d F u f v k l t area, in square millimetres; width of machined flat face of drill core, in millimetres; width of test bar, in millimetres; diameter, in millimetres; ultimate load, in newtons; shear strength, in newtons per square millimetre; modification factor; length of test piece, in millimetres; thickness of test piece, in millimetres.

EN 392:1995 NOTE It is recommended that the full cross-sectional specimens are taken within areas of the glulam member where sufficient cramping pressure has been established. In practice the specimens are frequently cut from the end of the glulam members where the cramping pressure may be variable and insufficient. If the required shear strength is obtained from test pieces of this nature, the quality of the glue lines in the member should be deemed adequate. Figure 1 Shearing tool with a test bar inserted NOTE If the test bar is cut from a position higher in the cross section the numbers of the lines do not start with 1 (see 6.3.3). Figure 2 The normal test piece, a test bar, and the numbering of the individual glue linesfor a test bar cut at the bottom of the cross section 4 BSI 07-1999

EN392:1995 6.3.2.2 The shear testing shall include as far as possible the total cross-sectional width of the glulam member. The number of test bars to be taken shall be as given in Table 1. Table 1 Number of test bars Width of full cross section (see Figure 4) k100 >100, k160 >160 mm Figure 3 Drill core with machined parallel plane surfaces 6.3.2.3 If two or more members are cramped in one operation, see Figure 6, the test bars necessary according to the testing quantity quoted in 6.3.2.2 have to be taken from each of the members. 6.3.2.4 For testing glue lines within the glulam member, drill cores shall be sampled. The drill cores shall be cut out perpendicular to the face of the glulam member in such a way that the glue line to be tested is situated in the middle of the core. 1 2 3 Number of test bars BSI 07-1999 5 NOTE For guidance of the drilling tool it is recommended that an appropriate support is used. The drill cores shall be machined at two faces perpendicular to the glue line as shown in Figure 3 and divided lengthwise so that the test pieces have a rectangular shearing area. 6.3.3 Marking Every test bar shall be marked with a durable identification. This shall indicate the location of the test bar within the cross section of the glulam member. NOTE 1 The relationship between identification and location may be as shown in Figure 5. If the glulam member is glued vertically the front side of the element should be marked with U and the back side with L. The glue lines of the glulam member should be numbered beginning with the bottom edge of the member, see Figure 2. NOTE 2 If two glulam members are cramped in one operation, the test bars from the lower member should be marked additionally with 1 and those from the upper member with 2. An example of this marking is shown in Figure 6.

EN 392:1995 Figure 4 Test bars to be cut from a full cross-sectional specimen Figure 5 Suggested identification showing the location of the test bars in the cross section in a member glued horizontally 6 BSI 07-1999

EN392:1995 Figure 6 Additional identification with numbers showing the location of the glulam member during the cramping 6.4 Procedure 6.4.1 The test pieces shall be conditioned to an equilibrium moisture content in the standard climate 20/65, given in ISO 554, i.e. temperature (20 ± 2) C and a relative humidity of (65 ± 5) %. For internal quality control the moisture content of the wood shall be uniform over the test piece and within the range of 8% to 13%. 6.4.2 Measure the sizes from which the sheared area is determined to the nearest0,5mm. Use, for example, a sliding gauge. 6.4.3 Place the test piece in the shearing tool so that it is loaded in the direction of the grain. The glue line shall be positioned so that the distance between this and the sheared plane nowhere exceeds 1mm. 6.4.4 The loading shall be undertaken at a constant rate and so that failure occurs after at least20 s. 6.4.5 Estimate the amount of wood failure percentage rounded off to the nearest figure divisible by 5. 6.4.6 From every tested test bar with at least five remaining glue lines a part shall be marked with the order number, element number, gluing date and position of the test piece according to 6.3.3, and stored for a period as agreed with the certification body. 6.5 Results Determine the shear strength f v with two significant digits from the following equation: where A is the sheared area (for a test bar A = bt, and for a drill core A = lt); NOTE The factor k modifies the shear strength for test pieces where the thickness in the grain direction of the sheared area is less than 50mm. 6.6 Test report The test report shall include the following items. a) Date of the test. b) Identification of test pieces and members from which they have been cut. Any other relevant information, e.g.about preconditioning. c) Species of timber. d) Type of adhesive. e) Sizes of the test piece. f) Ultimate load and shear strength. g) Any relevant observation made during or after testing. h) Signature of the person responsible for the testing. NOTE The information mentioned in items e) to h) is not required to be registered and filed directly, if other data are filed from which the information may be derived. BSI 07-1999 7 f v k t = k F u ------ A is a modification factor: k = 0,78 + 0,0044 t; is the thickness, in millimetres.

BS EN 392:1995 BSI British StandardsInstitution BSI 389 Chiswick High Road London W4 4AL BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel:020 89969000. Fax: 020 89967400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel:0208996 9001. Fax:0208996 7001. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel:020 89967111. Fax: 020 89967048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel:020 89967002. Fax: 020 89967001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel:020 89967070.