1、BRITISH STANDARD Flexible sheets for waterproofing - Determination of length, width, straightness and flatness - Part 2: Plastic and rubber sheets for roof waterproofing The European Standard EN 1848-2:2001 has the status of a British Standard ICs 83.140.10; 91.100.50 BS EN 1848- present to the resp
2、onsible 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 organizations represented on this subcommittee can be obtained on request to
3、 its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled ?International Standards Correspondence Index?, or by using the ?Find facility of the BSI
4、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 immunity from legal obligations. Summary o
5、f pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. O BSI 07-2001 ISBN O 580 36353 8 EUROPEAN STANDARD NORME EUROPE
6、NNE EUROPISCHE NORM O EN 1848-2 May 2001 ICs 91 .I 00.50 English version Flexible sheets for waterproofing - Determination of length, width, straightness and flatness - Part 2: Plastic and rubber sheets for roof waterproofing Feuilles souples dtanchit - Dtermination de la longueur, de la largeur, de
7、 la rectitude et de la planit - Partie 2: Feuilles dtanchit de toiture plastiques et lastomres Abdichtungsbahnen - Bestimmung der Lnge, Breite, Geradheit und Planlage -Teil 2: Kunststoff- und Elastomerbahnen fr Dachabdichtungen This European Standard was approved by CEN on 2 June 2000. CEN members a
8、re bound 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-todate lists and bibliographical references concerning such national standards may be obtained on application to
9、the 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 Management Centre has the same status
10、 as the oficial versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netheriands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITEE FOR STANDARDIZA
11、TION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1848-2:2001 E Page 2 EN 1848-2:2001 Contents Page Fore
12、word . 3 Introduction 3 1 Scope 3 2 Normative references 3 3 Definitions 4 4 Sampling . 4 5 Determination of length 4 6 Determination of width 5 7 Determination of straightness and flatness . 5 8 Precision of the test methods 6 9 Test report 6 O BSI 07-2001 Page 3 EN 1848-212001 Foreword This Europe
13、an Standard has been prepared by Technical Committee CENiTC 254, Flexible sheets for waterproofing, 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 Novembe
14、r 2001, and conflicting national standards shall be withdrawn at the latest by July 2002. According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finlan
15、d, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Introduction This European Standard is intended for characterization of plastic and rubber sheets as manufactured or supplied before use. This test metho
16、d relates exclusively to products or to their components where appropriate, and not to waterproofing membrane systems composed of such products and installed in the works. This test is intended to be used in conjunction with European Standard, Definition and Characteristics, for plastic and rubber s
17、heets for roof waterproofing. 1 Scope This European Standard specifies methods for the determination of length, width, straightness and flatness of plastic and rubber sheets for roof waterproofing supplied in rolls. 2 Normative references This European Standard incorporates, by dated or undated refe
18、rences, 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 incorpo
19、rated in it by amendment or revision. For undated references, the latest editions of the publication referred to apply (including amendments). EN 13416, Flexible sheets for waterproofing - Bitumen, plastic and rubber sheets for roof waterproofing - Rules for sampling. O BSI 07-2001 Page 4 EN 1848-2:
20、2001 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply: 3.1 length dimension of the roll measured in the manufacturing direction 3.2 width dimension of the roll measured at right angles to the manufacturing direction 3.3 straig htnesc devia
21、tion of the longitudinal edge of the roll from a straight line 3.4 flatness deviation of the top surface of the roll from a flat plane when it is unrolled and laid out on a flat surface 4 Sampling Test samples shall be taken in accordance with EN 13416. 5 Determination of length 5.1 Reference method
22、 5.1 .I Apparatus Flat surface, e.g. table or floor, not less than 10 m long and at least as wide as the roll to be tested. Both longitudinal edges of the surface shall be marked off at 1 m lengths, at least one of these lengths, preferably at one end of the surface, being subdivided into 1 mm divis
23、ions allowing measurement of the roll to an accuracy of _+5 mm at the specified temperature. 5.1.2 Procedure Mark the cut end of the roll, if necessary, so that it is at right angles to the length direction of the roll, such marking being confined to the minimum, which is necessary to effect this. W
24、ith the marked end of the roll aligned to the zero mark on the surface (5.1.1), unroll the material along the surface so that no tension is introduced at a temperature of (23 k 5)“C. On reaching the limit of the surface, mark the back of the roll by some suitable method on both edges to coincide wit
25、h a known length. Re-roll the portion that has been measured. Lay out, free from tension, a further portion of the unmeasured length and measure from the marked edges as before. Repeat this process until the end of the roll is reached, marking this, if necessary, as before. Measure the final length
26、to the nearest 5 mm. 5.2 Alternative method As an alternative to the manual technique as described in 5.1, any suitable mechanical, electromechanical or photoelectric means of measuring the length that gives results equivalent to these obtained using the method in 5.1 may be used. In cases of disput
27、e the reference method in 5.1 shall be used. O BSI 07-2001 Page 5 EN 1848-212001 5.3 Expression of results Report the length of the roll, in metres, as the sum of all the readings, rounded to the nearest 10 mm. O 6 Determination of width 6.1 Apparatus 6.1.1 Flat surface, e.g. table or floor not less
28、 than 10 m long and at least as wide as the roll to be tested. 6.1.2 Measuring tape or rule of length greater than the width of the roll to be measured, permitting measurements to be made to the nearest 1 mm at the specified temperature. 6.2 Procedure While the roll is unrolled on the surface (6.1.1
29、) and free of tension using the measuring device (6.1.2), measure and record, at intervals of 10 m, at a temperature of (23 f 5)“C, the width of the roll to the nearest 1 mm. Ensure that all measurements of width are taken at right angles to the longitudinal direction of the roll. For rolls less tha
30、n 20 m long, measure the width at three positions, .e. near the two ends and in the middle of the roll. 6.3 Expression of results Calculate the mean of the recorded widths and report the value obtained as the average width to the nearest 1 mm. Report also the minimum width recorded. 7 Determination
31、of straightness and flatness 7.1 Apparatus 7.1.1 Flat surface, e.g. table or floor, not less than 10 m long and at least as wide as the roll to be tested. 7.1.2 Measuring device, capable of measuring the distance g and p to an accuracy of 1 mm at the specified temperature. 7.2 Procedure Unroll the r
32、oll along the surface so that no tension is introduced at a temperature of (23 f5)“C over a length of at least the first 10 m. After (30 f 5) min measure the straightness as the maximum distance g, in mm, between the edge of the roll and the straight line AB (IO m) (see Figure 1). Measure the flatne
33、ss as the maximum distancep, in mm, between the top of the edge undulations and the flat surface. 7.3 Expression of results Report the straightness and the flatness of the roll as distances (g - 100) andp, in mm, measured in 7.2, rounded to the nearest 10 mm. O BSI 07-2001 Page 6 EN 1848-22001 1001
34、A B c - 11 O000 Dimensions in millimetres ho0 Figure 1 - Principle of straightness measurement 8 Precision of the test methods No information is available at this time. 9 Testreport The test report shall contain at least the following information: a) a reference to this European Standard (EN 1848-2)
35、 and any deviation from it; b) all details necessary to identify the product tested; c) the length of the roll in m; d) the individual measured values of the width in m; e) the average width in m; 9 the straightness, g, in mm; g) the flatness,p, in mm; h) any non-standard procedures and any peculiar
36、ities encountered during testing; i) the date of testing. O BSI 07-2001 BS EN 1 84 8-2: 20 O 1 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe
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