BRITISH STANDARD BS EN 426 1993 Resilient floor coverings — Determination of width, length, straightness and flatness of sheet material The European Standard EN 426 1993 has the status of a British St[.]
BRITISH STANDARD BS EN 426:1993 Resilient floor coverings — Determination of width, length, straightness and flatness of sheet material The European Standard EN 426:1993 has the status of a British Standard Confirmed October 201 BS EN 426:1993 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Belgium Denmark Finland France Germany Greece Iceland Ireland Italy Luxembourg Netherlands Norway Portugal Spain Sweden Switzerland United Kingdom Oesterreichisches Normungsinstitut Institut belge de normalisation Dansk Standardiseringsraad Suomen Standardisoimisliito, r.y Association franỗaise de normalisation Deutsches Institut fỹr Normung e.V Hellenic Organization for Standardization Technological Institute of Iceland National Standards Authority of Ireland Ente Nazionale Italiano di Unificazione Inspection du Travail et des Mines Nederlands Normalisatie-instituut Norges Standardiseringsforbund Instituto Portugs da Qualidade Asociación Espola de Normalización y Certificación Standardiseringskommissionen i Sverige Association suisse de normalisation British Standards Institution This British Standard, having been prepared under the direction of the Plastics and Rubber Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 November 1993 Amendments issued since publication © BSI 08-1999 Amd No The following BSI references relate to the work on this standard: Committee reference PRM/60 Draft for comment 90/49164 DC ISBN 580 21693 Date Comments BS EN 426:1993 Contents Cooperating organizations National foreword Foreword Scope Definition Principle Apparatus Sampling Conditioning Procedure Expression of results Test report Figure — Measurement using string line National annex NA (informative) Committees responsible © BSI 08-1999 Page Inside front cover ii 3 3 3 3 Inside back cover i BS EN 426:1993 National foreword This British Standard has been prepared under the direction of the Plastics and Rubber Standards Policy Committee and is the English language version of EN 426 Resilient floor coverings — Determination of width, length, straightness and flatness of sheet material, published by the European Committee for Standardization (CEN) EN 426 was produced as a result of discussions in which the United Kingdom took an active part There is no existing British Standard corresponding to EN 426 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 to 4, an inside back cover 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 08-1999 EN 426 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM September 1993 UDC 698.7:692.535.6:645.13:620.1:531.7 Descriptors: Floor coverings, textile floor coverings, determination, dimensions, width, length, flatness, straightness English version Resilient floor coverings — Determination of width, length, straightness and flatness of sheet material Revêtements de sol resilients — Détermination de la largeur, de la longeur, de la rectitude et de la planéité des lés Elastische Bodenbeläge — Bestimmung von Breite, Länge, Geradheit und Ebenheit von Bahnen This European Standard was approved by CEN on 1993-08-30 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 CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © 1993 Copyright reserved to CEN members Ref No EN 426:1993 E EN 426:1993 Foreword This European Standard was prepared by CEN/TC 134, Resilient and textile floor coverings, the secretariat of which is held by BSI 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 March 1994, and conflicting national standards shall be withdrawn at the latest by March 1994 The standard was approved and 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, United Kingdom © BSI 08-1999 EN 426:1993 Scope This European Standard specifies methods for determining the width, length, straightness and flatness of resilient floor coverings in sheet form Definition For the purposes of this standard, the following definition applies 2.1 effective width the width bounded by two straight lines parallel to the axis of the resilient floor covering between which the appearance of the material is uniform and its thickness is constant Principle The measurement at several points of the width and length of a test piece resting on a flat surface is carried out 7.2.2 If the table is shorter than the length of the roll, take the measurements part by part Unroll as far as possible and follow the procedure described in 7.2.1 Mark the points to which the length was measured, roll up the measured length, unroll the next part and repeat the procedure as often as necessary to measure the full length 7.2.3 If the roll is much longer than the table, measure the length of the roll by re-rolling using a device with a calibrated measuring wheel 7.3 Assessment of straightness and flatness 7.3.1 Straightness For a measured length of m to 10 m, measure the straightness of an edge against a string line Record the greatest deviation and the reference length (see Figure 1) 7.3.2 Flatness Check the surface and edges of the test piece for ridges, folds or other deformations Apparatus 4.1 A rule or semi-rigid tape, accurate to mm, used for measuring width 4.2 A table or flat surface of greater width and, if possible, of greater length than the test piece to be measured 4.3 A device for measuring the length of the sheet to an accuracy of 0,1 %, e.g a calibrated measuring wheel, steel tape 4.4 String line, length 10 m Sampling Use the entire roll if both length and width are to be determined If only width is to be determined, the test piece shall be of approximate length 200 mm Conditioning Condition the unrolled test piece at ambient temperature for a minimum of h Take the measurements at ambient temperature Procedure 7.1 Measurement of width Place the test piece on the table, with the surface layer uppermost Measure the effective width at three positions 7.2 Measurement of length 7.2.1 Lay out the test piece completely flat with the surface layer uppermost Measure the length in two places parallel to the axis of the test piece approximately 200 mm from the edges © BSI 08-1999 Figure — Measurement using string line Expression of results Calculate the effective width of the test piece as the smallest of the three measurements Round off to the nearest mm and express the result in millimetres Calculate the mean value of the two recorded lengths Round off to the nearest 0,05 m and express the result in metres Express the results of the greatest deviation from straightness to the nearest mm EN 426:1993 Test report The test report shall contain the following information: a) a reference to this standard, i.e EN 426; b) a complete identification of the product tested, including type, source, colour and manufacturer’s reference numbers; c) previous history of the sample; d) the effective width, in millimetres; e) the mean value of length, in metres; f) the value of straightness, in millimetres; g) the assessment of flatness; h) the temperature at which the test was carried out; i) any deviation from this standard which may have affected the results © BSI 08-1999 BS EN 426:1993 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by the Plastics and Rubber Standards Policy Committee (PRM/-) to Technical Committee PRM/60, upon which the following bodies were represented: British Adhesives and Sealants Association British Board of Agrément British Floor Covering Manufacturers’ Association British Railways Board British Rubber Manufacturers’ Association Ltd Consumer Policy Committee of BSI Contract Flooring Association Cork Industry Federation Department of the Environment (Building Research Establishment) Federation of Plastering and Drywall Contractors Health Care Supplies South West Royal Institute of British Architects © BSI 08-1999 BS EN 426:1993 BSI — British Standards Institution 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 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