BS EN 1024-2012 Clay roofing tiles for discontinuous laying Determination of geometric characteristics《间断敷设用陶土制屋面瓦 几何特征的测定》.pdf

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1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 1024:2012Clay roofing tiles fordiscontinuous laying Determination of geometriccharacteristicsBS EN 1024:2012 BRITISH STANDARDNational forewordThis British Standard is the U

2、K implementation of EN 1024:2012. Itsupersedes BS EN 1024:1997 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/542/3, Clay roofing tiles.A list of organizations represented on this committee can beobtained on request to its secretary.This publication

3、does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 75393 0ICS 91.100.25Compliance with a British Standard cannot confer immunity fromlega

4、l obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 June 2012.Amendments issued since publicationDate Text affectedBS EN 1024:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1024 March 2012 ICS 91.100.25 Supersedes EN 102

5、4:1997English Version Clay roofing tiles for discontinuous laying - Determination of geometric characteristics Tuiles de terre cuite pour pose en discontinu - Dtermination des caractristiques gomtriques Tondachziegle fr berlappende Verlegung - Bestimmung der geometrischen Kennwerte This European Sta

6、ndard was approved by CEN on 22 January 2012. 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 concernin

7、g such national standards may be obtained on application to the CEN-CENELEC 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 it

8、s own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,

9、Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marni

10、x 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1024:2012: EBS EN 1024:2012EN 1024:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Symbols 44 Test pieces .55 Tests methods 56 Test re

11、port . 17Annex A (informative) Example of twist measurement device for tiles with sidelock and headlock, tiles with sidelock only and overlapping tiles 18BS EN 1024:2012EN 1024:2012 (E) 3 Foreword This document (EN 1024:2012) has been prepared by Technical Committee CEN/TC 128 “Roof covering product

12、s for discontinuous laying and products for wall cladding”, the secretariat of which is held by NBN. 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 September 2012, and conflicting national standa

13、rds shall be withdrawn at the latest by September 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 10

14、24:1997. This European Standard is one of the series of standards dealing with clay roofing tiles as listed below: EN 1304, Clay roofing tiles and fittings Products definitions and specifications EN 538, Clay roofing tiles for discontinuous laying Flexural strength test EN 539, Clay roofing tiles fo

15、r discontinuous laying Determination of physical characteristic This European Standard includes: an informative annex Figure A.1 Example of twist measurement device for tiles with sidelock and headlock, tiles with sidelock only and overlapping tiles. According to the CEN/CENELEC Internal Regulations

16、, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Ne

17、therlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 1024:2012EN 1024:2012 (E) 4 1 Scope This European standard specifies the methods for determining the geometric characteristics of clay tiles as defined in EN 1304, Clay

18、roofing tiles and fittings Product definitions and specifications. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references,

19、 the latest edition of the referenced document (including any amendments) applies. EN 1304, Clay tiles and fittings Product definitions and specifications 3 Symbols L1maximum distance when measuring covering dimensions (length) in millimetres (mm); L2minimum distance when measuring covering dimensio

20、ns (length) in millimetres (mm); l1maximum distance when measuring covering dimensions (width) in millimetres (mm); l2minimum distance when measuring covering dimensions (width) in millimetres (mm); L mean cover length in millimetres (mm); LMmaximum cover length in millimetres (mm); l mean cover wid

21、th in millimetres (mm); lMmaximum cover width in millimetres (mm); H difference in height from the measuring point at the support bar or height in relation to a reference plane in millimetres (mm); C twist coefficient in percent; A tile length as declared by the manufacturer in millimetres (mm); B t

22、ile width as declared by the manufacturer in millimetres (mm); hdheight of camber as declared by the manufacturer in millimetres (mm); hmmeasured height of camber in millimetres (mm); R camber in percentage; h hm-hd absolute value in millimetres (mm); LTtotal length of the tile in millimetres (mm);

23、lTtotal width of the tile in millimetres (mm); LAmeasurement base in longitudinal direction in millimetres (mm); LBmeasurement base in transverse direction in millimetres (mm); E1distance between the internal edges of an over - and under- tile at one of its extremities in millimetres (mm); E2distanc

24、e between the internal edges of an over - and under- tile at the other extremity in millimetres (mm). BS EN 1024:2012EN 1024:2012 (E) 5 4 Test pieces The measurement of geometric characteristics are carried out on 10 test pieces, each of which constitutes a whole tile, except for the measurement of

25、cover dimensions, which requires 24 tiles. 5 Tests methods 5.1 Determination of dimensional characteristics 5.1.1 Individual dimensions1)5.1.1.1 Apparatus The tests are made with a measuring apparatus with a precision of at least one millimetre. 5.1.1.2 Procedure After removing any surplus clay from

26、 the edges, the measurements shall be taken, both transversely and longitudinally along the centre of the tile unless another measuring position has been specified by the manufacturer (see Figure 1). The dimensions are expressed to the nearest whole millimetre. Key 1 tile Figure 1 Principle for meas

27、uring individual dimensions 5.1.1.3 Expression of results The arithmetic means of the lengths and widths of the 10 tested tiles and the differences expressed as a percentage of these mean values in relation to the values A and B declared by the manufacturer shall be calculated and noted in the test

28、report. 1) EN 1304 specifies to which type of tiles these measurements apply. BS EN 1024:2012EN 1024:2012 (E) 6 5.1.2 Overlap dimensions (margins)1)5.1.2.1 Principle The mean overlap dimensions are determined longitudinally and transversely. They are measured as indicated in Figure 2. NOTE Certain t

29、ile models can only be measured in one direction. Key 1 mean cover length 1.1 open position 1.2 closed position 2 mean cover width 2.1 open position 2.2 closed position Figure 2 Principle for measuring cover dimensions 5.1.2.2 Number of test pieces 24 tiles are required for the measurements. 5.1.2.3

30、 Apparatus The tests are carried out with a measuring apparatus with a precision of at least 1 mm. BS EN 1024:2012EN 1024:2012 (E) 7 5.1.2.4 Procedure The tiles are laid upside down in two rows on a flat surface, and interlocked with one another so as to form a stable unit. Certain types of tiles ma

31、y require laying the right way up. The tiles are interlocked longitudinally and pulled apart individually to measure the maximum distance between two corresponding points on the first and the eleventh tile, i.e. L1, the maximum length. Following this, the tiles are taken up, then relaid and interloc

32、ked. They are pushed together individually as closely as possible to carry out the measurement of the minimum distance (L2) following the procedure described above. Take again the same measurements, but this time, transversely in order to obtain the values l1and l2. With regard to tiles with a varia

33、ble overlap, determine only the measurement of cover in the open position, L1(longitudinally), l1(transversely). NOTE This method is not relevant to some types of tiles designed to be laid broken jointed. 5.1.2.5 Expression of results The mean cover length (L) is obtained from the following formula:

34、 L = (L1+L2) / 20 (1) The maximum cover length (LM) (tiles with a variable overlap) is obtained from the following formula: LM= L1/ 10 (2) The mean cover width (l) is calculated from the following formula: l = (l1 + l2) / 20 (3) The maximum cover width (lM) (of tiles with a variable overlap) is calc

35、ulated from the following formula: lM= l1/ 10 (4) The calculated values as recorded are rounded to the nearest whole millimetre. The percentage difference of these cover dimensions compared with those declared by the manufacturer are calculated and stated in the test report. 5.2 Cambers 5.2.1 Princi

36、ple Measure height of camber longitudinally and transversely for plain tiles (see Figures 3, 4 and 5) and longitudinally only for all other types of tile (see Figures 6, 7 and 8). The height of camber for a curvature whose concavity is located on the outer surface of the tile are given a minus sign

37、and a plus sign is given in the opposite case. The measurement is taken to a precision of at least 0,5 mm on each outside edge of the tile, with the most unfavourable value being selected. Take as measurement bases LAand LBequal to2/3 of the total length (LT) and width (lT) of the tile. Where this i

38、s not possible, the measurement base may be reduced to the largest dimension that is compatible with the shape of the tile. BS EN 1024:2012EN 1024:2012 (E) 8 Key 1 dial gauge 2 rule 3 metal plate 4 tile Figure 3 Measurement of longitudinal camber on a plain tile Key 1 dial gauge 2 rule 3 metal plate

39、 4 tile Figure 4 Measurement of longitudinal camber on an ornamental plain tile BS EN 1024:2012EN 1024:2012 (E) 9 Key 1 dial gauge 2 metal plate 3 tile Figure 5 Measurement of transverse camber on a plain tile Key 1 dial gauge 2 metal plate 3 tile Figure 6 Measurement of longitudinal camber on a til

40、e with sidelock and headlock or a tile with sidelock only BS EN 1024:2012EN 1024:2012 (E) 10 Key 1 dial gauge 2 metal plate 3 tile Figure 7 Measurement of longitudinal camber on a tile with sidelock and headlock or a tile with sidelock only (reverse side of tile) Key 1 dial gauge 2 metal plate 3 til

41、e Figure 8 Measurement of longitudinal camber on an under-and-over tile BS EN 1024:2012EN 1024:2012 (E) 11 5.2.2 Apparatus (Figure 9) The measurement is taken using a rule with three contact points, combined with a device to measure the height of camber accurately to a precision of at least 0,5 mm.

42、Key 1 dial gauge 2 rule 3 contact points Figure 9 Apparatus for measuring cambers The two outer contact points on the rule shall be able to slide so as to adjust to different measurement lengths. Any suitable apparatus may be used to obtain these measurements provided the prescribed requirements are

43、 met. 5.2.3 Procedure 5.2.3.1 Longitudinal measurement 5.2.3.1.1 Plain tiles and overlapping tiles The measurement is taken on the exterior face of the tile along the two longitudinal outer edges. 5.2.3.1.2 Tiles with sidelock and headlock, and tiles with sidelock only The measurement is taken on th

44、e outer surface of the tile in the bottom of the interlock groove, as well as on the lower edge of the flange which locks into this groove. 5.2.3.1.3 Over-and-under tiles This measurement is taken along the axis in the bottom of the concavity of the tile, or for tiles with a flat bottom, along the c

45、entre line. 5.2.3.2 Transverse measurement - Plain tiles The measurement is taken on the exterior face of the tile along the two transverse - upper and lower - outer edges. (For tiles whose lower edge is not a straight line, take the measurement at the widest point of the tile, as far as possible to

46、wards the lower edge). BS EN 1024:2012EN 1024:2012 (E) 12 5.2.4 Expression of results Cambers are obtained from the following formulas: R = h x 100 / LAin percentage, longitudinally (5) R = h x 100 / LBin percentage, transversely (6) where h = hm- hd in absolute value; hmis the measured height of ca

47、mber in millimetres; hdis the nominal height of camber declared by the manufacturer in millimetres; LAand LBare the base lengths defined above in millimetres. Note the individual measurement values and the mean values of the results in the test report. 5.3 Control of regularity of shape 5.3.1 Twist

48、5.3.1.1 Plain tiles 5.3.1.1.1 Apparatus Two 25 mm x 25 mm cross-section metal bars, longer than the width of the tile. These bars act as battens; a metal plate, level to a precision of 1/10 mm, with dimensions greater than those of the tile; a stepped metal thickness gauge (as shown in Figure 10) wi

49、th 0,5 mm graduations, a maximum width of 8 mm and a maximum depth of 5 mm for each step to measure the gaps (vertical displacement). Any suitable apparatus may be used to obtain these measurements, provided the prescribed requirements are met. BS EN 1024:2012EN 1024:2012 (E) 13 5.3.1.1.2 Procedure Fix the bars, for instance, with adhesive tape and place them parallel to one another on the plate with a distance between their centres equal to 2/3 of the length of the tile. For the tiles that are no

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