1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 11485-2:2011Glass in building Curved glassPart 2: Quality requirementsBS ISO 11485-2:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation o
2、f ISO 11485-2:2011. The UK participation in its preparation was entrusted to T e c h n i c a l Committee B/520/1, Basic and transformed glass products.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all th
3、e necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012.ISBN 978 0 580 60432 4 ICS 81.040.20 Compliance with a British Standard cannot confer immunity from legal obligations.This British
4、Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2012.Amendments issued since publicationDate T e x t a f f e c t e dBS ISO 11485-2:2011Glass in building Curved glass Part 2:Quality requirementsVerre dans la construction Verre bomb Partie 2: Ex
5、igences de qualit ISO 2011Reference numberISO 11485-2:2011(E)First edition2011-12-15ISO11485-2INTERNATIONAL STANDARDBS ISO 11485-2:2011ISO 11485-2:2011(E)COPYRIGHT PROTECTED DOCUMENT ISO 2011All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in
6、 any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749
7、 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in Switzerlandii ISO 2011 All rights reservedBS ISO 11485-2:2011ISO 11485-2:2011(E) ISO 2011 All rights reserved iiiContents PageForeword iv1 Scope 12 Normative references .13 Terms and definitions .14 Quality requirements 14.1 General .14.2 Tole
8、rances on the shape accuracy, girth and length .24.3 Edge straightness deviation (RB) 34.4 Maximum cross-curve deviation .34.5 Maximum twist deviation (V) 34.6 Appearance .44.7 Dimensional tolerances of curved laminated glass .54.8 Dimensional tolerances of curved insulating glass .65 Test methods 7
9、5.1 Measurement of shape accuracy, girth and length 75.2 Edge straightness deviation .75.3 Measurement of cross-curve deviation .85.4 Maximum twist deviation .95.5 Test method on appearance of curved glass .10Bibliography .11BS ISO 11485-2:2011ForewordISO (the International Organization for Standard
10、ization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to
11、be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standa
12、rds are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Intern
13、ational Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 11485-2 wa
14、s prepared by Technical Committee ISO/TC 160, Glass in building, Subcommittee SC 1, Product considerations.ISO 11485 consists of the following parts, under the general title Glass in building Curved glass : Part 1: Terminology and definitions Part 2: Quality requirements Part 3: Requirements for tem
15、pered and laminated curved safety glass1)1) Under preparation.ISO 11485-2:2011(E)iv ISO 2011 All rights reservedBS ISO 11485-2:2011INTERNATIONAL STANDARD ISO 11485-2:2011(E)Glass in building Curved glass Part 2:Quality requirements1 ScopeThis part of ISO 11485 specifies the quality requirements for
16、curved glass used in general building construction, furniture, display and various other non-automotive applications.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated refe
17、rences, the latest edition of the referenced document (including any amendments) applies.ISO 11485-1, Glass in building Curved glass Part 1: Terminology and definitions3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 11485-1 apply.4 Quality requirement
18、s4.1 GeneralCurved glass can originate as annealed float glass, patterned glass or wired glass. Curved glass can be processed as tempered, laminated, heat strengthened, coated or frit enamelled. It can also be assembled into insulated glass units.All of these various products shall conform to the co
19、rresponding ISO standard for flat products except for those unique characteristics covered by this part of ISO 11485 or when it can be demonstrated that a particular requirement of the corresponding standard cannot be applied to curved glass for any reason (i.e. testing flat samples vs. curved sampl
20、es).When there is no corresponding International Standard, any other national standard may be used instead.When tested in accordance with Clause 5, the curved glass shall conform to the quality requirements given in Clause 4, summarized in Table 1.The tolerance on thickness of curved glass panes sha
21、ll conform to the tolerance on thickness stated in the corresponding basic product standard ISO 16293 (all parts), however minor changes to glass thickness may occur due to stretching during forming and/or shaping. ISO 2011 All rights reserved 1BS ISO 11485-2:2011Table 1 Quality requirements for cur
22、ved glassQuality requirement Corresponding subclausesClassification Sub-classificationCurved annealed glass, curved tempered glass, curved heat-soaked tempered glassCurved laminated glassCurved insulating glassTest methodShape and dimensionlength tolerance 4.2 4.2 4.2 5.1girth tolerance 4.2 4.2 4.2
23、5.1shape accuracy tolerance4.2 4.2 4.8 5.1thickness tolerance 4.7 4.8 displacement 4.7 4.8 edge straightness deviation4.3 4.3 4.3 5.2maximum cross-curve deviation4.4 4.4 4.4 5.3maximum twist deviation4.5 4.5 4.5 5.4Appearancelength and permissible number of appearance defects4.6 4.6 4.6 5.54.2 Toler
24、ances on the shape accuracy, girth and lengthWhen measured in accordance with 5.1, the tolerances on shape accuracy, girth and length shall be as given in Table 2, illustrated in Figure 1.Table 2 Tolerances on the shape accuracy, girth and lengthToleranceThickness 2 400 V 1 000 mm d1 2 mm/m4.8 Dimen
25、sional tolerances of curved insulating glass4.8.1 ThicknessThe tolerance on thickness of curved glass panes should conform to that required by the corresponding basic product standard ISO 16293 (all parts), however minor changes to glass thickness can occur due to stretching during forming and/or sh
26、aping.The tolerance on the total thickness shall equal the sum of the tolerances on the components (see applicable standards) increased by 3 mm.4.8.2 Tolerance on shape accuracyThe tolerance on shape accuracy, as shown in Figure 6, shall be given by:PC= PC1+ PC2+ 2 mmwherePC1is the tolerance on the
27、curvature of the first component of the curved insulating glass;PC2is the tolerance on the curvature of the second component of the curved insulating glass with PC1and PC2in accordance with limits given in Table 2.NOTE The thickness deviation of curved insulating glass is partly the consequence of t
28、he tolerance on shape accuracy.ISO 11485-2:2011(E)6 ISO 2011 All rights reservedBS ISO 11485-2:2011PCPCFigure 6 Shape accuracy4.8.3 DisplacementThe maximum displacement in the sliding “d2” of one of the glass edges, as shown in Figure 7, during the manufacturing of the curved insulating glass, shall
29、 be as given in Table 6, where G is the girth of the curved insulating glass unit.d2Figure 7 Displacement for curved insulating glassTable 6 Maximum displacement of curved insulating glassL or G Maximum displacementL or G 1 000 mm d2 3 mmL or G 1 000 mm d2 3 mm/m5 Test methods5.1 Measurement of shap
30、e accuracy, girth and lengthMeasure the shape accuracy perpendicular to the glass using a gauge or a 1:1 scale template.Measure the girth dimension on the convex surface using a flexible steel tape measure of 1 mm in scale interval.Measure the length of the sides using a steel tape or a straightedge
31、 of 1 mm scale interval.5.2 Edge straightness deviationThe edge straightness deviation should be measured with the glass in a vertical position as shown in Figure 8. Place a straightedge ruler, with 0,1 mm intervals, horizontally along the length of the glass to measure the gap between the glass spe
32、cimen and the ruler.ISO 11485-2:2011(E) ISO 2011 All rights reserved 7BS ISO 11485-2:2011G/4G/412L/4L/4Key1 straightedge or a piece of thin and strong string can be used2 glass concave surface or convex surface12Example of arc shape12Example of S-shapeKey1 glass edge2 rulerFigure 8 Measurement of ed
33、ge straightness deviation5.3 Measurement of cross-curve deviationPlace a straightedge along the vertical edge (perpendicular to the arc) on the concave surface of glass, then measure the distance between the glass and the straightedge as shown in Figure 9.ISO 11485-2:2011(E)8 ISO 2011 All rights res
34、ervedBS ISO 11485-2:2011ABCG/4G/4ABCABCL/4L/4123Key1 straightedge or a piece of thin strong string can be used. Measuring points: A-A, B-B, C-C2 glass concave surface or convex surface3 setting of the glass shall be either way as shown aboveNOTE The cross-bend deviation shall be distinguished from w
35、arp of the height.Figure 9 Measurement of cross-curve deviation5.4 Maximum twist deviationMeasure the maximum twist deviation as shown in Figure 10, using either the following method or any other technique that achieves a comparably accurate measurement.a) Stand a curved glass product vertically on
36、the crossties (wooden blocks), preferably as it would be set in the actual building.b) Place two thin strong strings diagonally from the four corners on the concave side, which are theoretically on the same level.c) Pull the strings and move one of them at one corner so that they are straight and to
37、uch with each other at the crossing point.d) If the outer string at the crossing point parts from the glass at the corner, measure the distance, and its V1(mm). If the diameter of the string is s (mm), the maximum twist deviation is V(mm) = V1 2s.e) If the inner string parts from the glass, the dist
38、ance is V2(mm). Again, if the diameter of the strings is s (mm), the maximum deviation is V(mm) = V2+ 2s.f) In either way, the Vs are the same, which is the maximum twist deviation.ISO 11485-2:2011(E) ISO 2011 All rights reserved 9BS ISO 11485-2:2011G/4G/4123Key1 concave surface2 thin strong string3
39、 crossing pointFigure 10 Measurement of maximum twist deviation5.5 Test method on appearance of curved glassConduct a visual inspection at 3,0 m from the glass product, in a vertical position, using daylight without direct sunlight, or using background lighting. To measure the length or diameter of
40、the appearance defect, use a metal ruler with 0,5 mm intervals.ISO 11485-2:2011(E)10 ISO 2011 All rights reservedBS ISO 11485-2:2011Bibliography1 ASTM C1464-06, Standard Specifications for Bent Glass2 ISO 16293 (all parts), Glass in building Basic soda lime silicate glass productsISO 11485-2:2011(E)
41、 ISO 2011 All rights reserved 11BS ISO 11485-2:2011ISO 11485-2:2011(E) ISO 2011 All rights reservedICS 81.040.20Price based on 11 pagesThis page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-related publications, informati
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