1、BRITISH STANDARD Flexible sheets for waterproofing - Determination of visible defects - Part 2: Plastic and rubber sheets for roof waterproofing The European Standard EN 1850-2:2001 has the status of a British Standard ICs 83.140.10; 91.100.50 BS EN 1850-2:2001 NO COPYING WITHOUT BSI PERMISSION EXCE
2、PT AS PERMITTED BY COPYRIGHT LAW BS EN 1850-22001 Amd. No. National foreword Date Comments This British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on
3、 15 July 2001 This British Standard is the official English language version of The UK participation in its preparation was entrusted by Technical Committee B/546, Flexible sheets for waterproofing, to Subcommittee B/546/2, Roof sheeting and sealing sheeting, which has the responsibility to: EN 1850
4、-2:2001. - - aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A list of organi
5、zations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, o
6、r by using the “Find” facility of the BSI Standards Electronic Catalogue. 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
7、immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 4, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued sin
8、ce publication O BSI 07-2001 ISBN O 680 36352 X EUROPEAN STANDARD NORME EUROPEENNE EUROPISCHE NORM EN 4850-2 May 2001 ICs 91.100.50 English version Flexible sheets for waterproofing - Determination of visible defects - Part 2: Plastic and rubber sheets for roof wa tarproof i ng Feuilles souples dtan
9、chit - Dtermination des dfauts daspect - Partie 2: Feuilles dtanchit de toiture plastiques et lastomres Abdichtungsbahnen - Bestimmung sichtbarer Mngel - Teil 2: Kunststoffbahnen und Elastomerbahnen fr Dachabdichtungen This European Standard was approved by CEN on 2 June 2000. CEN members are bound
10、to comply with the CENICENELEC 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 Mana
11、gement Centre or to any CEN member. This European Standard exists in three official versions (English, Filench, 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 Management Centre has the same status as the
12、 official versions. CEN members are the national standards bodies of Austria, Belgiu , Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, PortugalTSpain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION C
13、OMITE EUROPEEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 8-1050 Brussels 0 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1850-2:2001 E Page 2 EN 1850-212001 Contents Page Foreword
14、 . 3 Introduction 3 1 Scope . 3 2 Normative references . 3 3 Terms and definitions . 3 4 Principle . 4 5 6 Procedure . 4 7 Test report 4 Sampling and conditioning . 4 O BSI 07-2001 Page 3 EN 1850-2:2001 0 Foreword This European Standard has been prepared by Technical Committee CEN/TC 254, Flexible s
15、heets for waterproofing, the Secretariat of which is held by BSI. This document has to be implemented at national level, either by publication of an identical text or by endorsement, by November 2001, and conflicting national standards have to be withdrawn by July 2002. According to the CENKENELEC I
16、nternal Regulations, the national standards organizations of the following countries are bound to implement this document: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and t
17、he United Kingdom. Introduction This European Standard is intended for characterization of plastic and rubber sheets as manufactured or supplied before use. This test method relates exclusively to products or to their components where appropriate, and not to waterproofing membrane systems composed o
18、f such products and installed in the works. This test is intended to be used in conjunction with a European Standard on definition and characteristics for plastic and rubber sheets for roof waterproofing. 1 Scope This European Standard specifies a method for the determination of the visible defects
19、in plastic and rubber sheets for roof waterproofing, which could influence the functional behaviour of these sheets. 2 Normative references This European Standard incorporates, by dated or undated references, provisions from other publications. These normative references are cited at the appropriate
20、 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 editions of the publicatio
21、n referred to apply (including amendments). EN 13416 Flexible sheets for waterproofing - Bitumen, plastic and rubber sheets for roof waterproofing - Rules for sampling. 3 Terms and definitions e For the purpose of this European Standard, the following terms and definitions apply. 3.1 blister elevati
22、on of the surface of vaned contour and dimensions, with a cavity beneath it 3.2 crack fissure that penetrates the external surface of the material or its entire thickness, the rubber or plastic material being completely separated between the crack walls 3.3 hole opening through the sheet, which may
23、allow the passage of water 3.4 scratch single sided damage to the surface caused by external means O BSI 07-2001 Page 4 EN 1850-212001 3.5 indentation small hollow or depression in the surface of the sheet 3.6 void enclosed cavity of an undefined shape, containing air or some other gas NOTE The term
24、 bubble refers to a more or less spherical void. 3.7 inclusion extraneous body enclosed within the mass. 4 Principle A pari of a selected roll of plastic or rubber sheet is unrolled on a Rat surface and examined for defects on both surfaces and at a cut surface. 5 Sampling and conditioning 5.1 Sampl
25、ing The plastic or rubber sheet to be tested shall be complete and undamaged rolls selected in accordance with EN 13416. 5.2 Conditioning of samples Generally ageing or conditioning is not required to be carried out and examination shall be made under ambient conditions. In case of dispute, the test
26、 shall be conducted at (23 f 2) OC after conditioning for at least 20 h at (23 f 2) OC. 6 Procedure The selected roll shall be laid on a flat surface. The first 10 m of the roll of material under examination is carefully unrolled, top surface uppermost, and examined over the whole surface with the n
27、aked eye for the presence of blisters, cracks, holes, scratches, indentations, or any other noticeable defect. The roll is then carefully turned over and examined on the underside for the same visible defects. Cut the roll near the end across the full width and examine the cut surface for the presen
28、ce of voids or inclusions. 7 Testreport The test report shall contain at least the following information: a) a reference to this European Standard (EN i 850-2) and any deviation from it; b) all details necessary to identify the product tested; c) any non-standard procedures or any peculiarities enco
29、untered during testing; d) the presence of any blisters, cracks, holes, scratches or indentations; e) the presence of any inclusions or voids in the cut surface; 9 the date of testing. a a O BSI 07-2001 BS EN 1850-2:200 1 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution B
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