《BS-EN-572-4-1995.pdf》由会员分享，可在线阅读，更多相关《BS-EN-572-4-1995.pdf（12页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 572-4:1995 Glass in building Basic soda lime silicate glass products Part 4: Drawn sheet glass The European Standard EN 572-4:1994 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS
2、 EN 572-4:1995 This British Standard, having been prepared under the direction of the she Building and Civil Engineering Sector Board (B/-), was published under the authority of the Standards Board and comes into effect on 15 March 1995 BSI 10-1999 The following BSI references relate to the work on
3、this standard: Committee reference B/520/1 Draft for comment 91/18124 DC ISBN 0 580 23620 X Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countri
4、es: AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standard FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Organization for Standardization IcelandTechnologic
5、al Institute of Iceland IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxembourgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portugus da Qualidade SpainAsociacin Es
6、paola de Normalizacin y Certificacin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:33 GMT+00
7、:00 2006, Uncontrolled Copy, (c) BSI BS EN 572-4:1995 BSI 10-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 Text of EN 572-43 National annex NA (informative) Committees responsibleInside back cover National annex NB (informative) Cross-referenceInside b
8、ack cover Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 572-4:1995 ii BSI 10-1999 National foreword This Part of BS EN 572 has been prepared by Subcommittee B/520/1, and is the English language version of EN 572-4:1994 Glass in build
9、ing Basic soda lime silicate glass products Part 4: Drawn sheet glass, published by the European Committee for Standardization (CEN). It does not replace any current British Standard. EN 572-4 was produced as a result of international discussions in which the United Kingdom took an active part. A Br
10、itish 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 fr
11、ont cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 6, 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. Licensed Co
12、py: sheffieldun sheffieldun, na, Mon Nov 06 09:31:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 572-4 November 1994 ICS 81.040.20 Descriptors: Construction, glass, glassware, window glass, dimensions, dimensional tolerances, appearance, defects, q
13、uality, acceptability, designation English version Glass in building Base soda lime silicate glass products Part 4: Drawn sheet glass Verre dans la construction Produits de base: verre de silicate sodo-calcique Partie 4: Verre tir Glass im Bauwesen Basiserzeugnisse aus Kalk-Natronglas Teil 4: Gezoge
14、nes Flachglas This European Standard was approved by CEN on 1994-11-08. 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 bibliograp
15、hical 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 CE
16、N 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
17、, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN 572-4:1994 E Licensed Copy: sheffieldun sheff
18、ieldun, na, Mon Nov 06 09:31:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 572-4:1994 BSI 10-1999 2 Foreword This European Standard has been prepared by the Technical Committee CEN/TC 129, Glass in building, the secretariat of which is held by IBN. CEN/TC 129/WG1, Basic glass products, prepared a
19、 working draft based on the document ISO/TC 160 N56 Glass in buildings Basic product Part 4: Drawn sheet glass. This document was drawn up by ISO/TC 160, Glass in buildings. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endo
20、rsement, at the latest by May 1995, and conflicting national standards shall be withdrawn at the latest by May 1995. According to the Common CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, G
21、reece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom. Contents Page Foreword2 1Scope3 2Normative references3 3Definitions3 3.1Length, H, and width, B3 3.2Stock sizes3 3.3Optical faults3 3.4Visual faults3 3.5Spot faults3 3.6Gaseous incl
22、usions3 3.7Linear/extended faults3 3.8Concentration, c3 4Dimensional requirements3 4.1Thickness3 4.2Length, width and squareness4 5Quality requirements4 5.1Methods of observation and measurement4 5.2Acceptance levels4 6Designation4 Figure 1 Relationship between length, width and direction of draw3 F
23、igure 2 Determination of length, width and squareness5 Table 1 Allowable tolerances on nominal thickness3 Table 2 Summary of acceptance levels5 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 572-4:1994 BSI 10-19993 1 Scope This Part of t
24、his European Standard specifies dimensional and minimum quality requirements (in respect of optical and visual faults) for drawn sheet glass, as defined in EN 572-1, for use in building. This Part of this standard applies only to drawn sheet glass supplied in rectangular panes and in stock sizes. Th
25、is Part of this standard does not apply to glass in cut sizes for final end use. 2 Normative references This European Standard incorporates by dated or undated references, provisions from other publications. These normative references are cited at the appropriate places in the text and the publicati
26、ons 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 edition of the publication referred to applies. EN 572-1, Glass
27、in building Basic soda lime silicate glass products Part 1: Definitions and general physical and mechanical properties. 3 Definitions For the purposes of this standard the following definitions apply. 3.1 length, H, and width, B these are defined with reference to the direction of draw of the glass
28、ribbon as shown in Figure 1 3.2 stock sizes glass delivered in the following sizes: Nominal length H: 1 600 mm to 2 160 mm; Nominal width B: 2 440 mm to 2 880 mm. 3.3 optical faults these are faults which lead to distortions in the appearance of objects observed through the glass 3.4 visual faults t
29、hese are faults which alter the visual quality of the glass. They include spot faults and linear/extended faults 3.5 spot faults these are gaseous inclusions or other spot faults, e.g. solid inclusions, marks or deposits of small size 3.6 gaseous inclusions these faults consist generally of an elong
30、ated bubble of gas 3.7 linear/extended faults these faults can be on or in the glass, in the form of deposits, marks or scratches which occupy an extended length or area 3.8 concentration, c the sum of the lengths of gaseous inclusions 1,0 mm in any circle of 400 mm diameter 4 Dimensional requiremen
31、ts 4.1 Thickness The actual thickness shall be the average of four measurements, taken to the nearest 0,01 mm, one taken at the centre of each side. Measurement shall be by means of an instrument of the caliper micrometer type. 4.1.1 Tolerances The actual thickness rounded to the nearest 0,1 mm shal
32、l not vary from the nominal thickness by more than the tolerances shown in Table 1. Table 1 Allowable tolerances on nominal thickness Figure 1 Relationship between length, width and direction of draw Nominal thicknesses (mm)Tolerances (mm) 2vtv 0,2 3 0,2 4 0,2 5 0,3 6 0,3 8 0,4 10 0,5 12 0,6 License
33、d Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 572-4:1994 4 BSI 10-1999 4.2 Length, width and squareness The nominal dimensions for length, H, and width, B, being given, the pane shall not be larger than a prescribed rectangle resulting from th
34、e nominal dimensions increased by the permissible plus tolerance or smaller than a prescribed rectangle reduced by the permissible minus tolerance. The sides of the prescribed rectangles shall be parallel to one another and these rectangles shall have a common centre (see Figure 2). The limits of sq
35、uareness shall also be prescribed by these rectangles. 4.2.1 Tolerances The tolerances on the nominal dimensions are 5 mm. 5 Quality requirements Drawn sheet glass is classified into two classes, 1 and 2, according to the density and importance of accepted faults. 5.1 Methods of observation and meas
36、urement 5.1.1 Optical faults A reticulated screen is observed through the pane of glass to be examined. The screen should have approximately the same dimensions as the pane of glass to be examined. It should consist of a matt grey background (reflection coefficient between 0,2 and 0,4) having a netw
37、ork of lines 10 mm thick of a colour contrasting clearly with the background. The network of lines should have the appearance of a wall of bricks whose size is 200 mm 70 mm, each line offset by 100 mm from the lines above and below. The lighting of the screen should correspond to diffuse natural or
38、artificial daylight. Place the pane of glass to be examined vertically 3 m from the screen. Arrange the point of observation 1 m from the glass keeping the direction of observation perpendicular to the screen. Arrange the pane of glass to form an angle of 45 with the plane of the screen. View the sc
39、reen through the glass and note any disturbing distortions to the pattern. 5.1.2 Visual faults 5.1.2.1 Spot faults Measure the largest dimension (diameter or length) of these faults with a micrometer with graduations in tenths of a millimetre. Note the number, dimensions and concentration of spot fa
40、ults. 5.1.2.2 Linear/extended faults The glass pane to be examined is illuminated in conditions approximating to diffuse daylight and is observed in front of a matt grey screen. Place the pane of glass to be examined vertically in front of the screen and parallel to it. Arrange the point of observat
41、ion 2 m from the glass, keeping the direction of observation normal to the glass surface. View the pane of glass, and note the presence of visually disturbing faults. 5.2 Acceptance levels The acceptance levels are summarized in Table 2. 6 Designation Sheet glass in compliance with this standard sha
42、ll be designated respectively by: type; class; tint (manufacturers reference) or clear; nominal thickness in mm; nominal length, H, and width, B, in mm; reference to this Part of this standard. Example Sheet glass, clear, intended for use in buildings, class 1, thickness 3 mm, length 1,6 m, width 2,
43、44 m, is designated as follows: Sheet glass, class 1, clear, 3 mm, 1 600 mm 2 440 mm, EN 572-4 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 572-4:1994 BSI 10-19995 Table 2 Summary of acceptance levels Figure 2 Determination of length,
44、width and squareness Faults Acceptance criteria Class 1Class 2 OpticalNo disturbing distortions in observation conditions given under 5.1.1 Visual 1 Spot faults 1.1 Gaseous inclusions k 1 mmacceptableacceptable 1.2 Gaseous inclusions 1 mm acceptable if: maximum length;k 6 mmk 10 mm sum of lengths/m2
45、; k 26 mmk 40 mm maximum number/m2. 68 for length 1 mm to 5 mm 3 for length 5 mm 1.3 Concentration, ck 14 mmk 25 mm 1.4 Other spot faults k 1 mm 1 per m21 per m2 1.5 Remark concerning all spot faults In the case of a single fault per m2 the maximum dimension may be increased by 25 % 2 Linear/extende
46、d faultsThe allowable number of faults is an average of 0,05 faults in 20 m2 of glass related to at least 20 tonnes Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 blank Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:33 GMT+0
47、0:00 2006, Uncontrolled Copy, (c) BSI BS EN 572-4:1995 BSI 10-1999 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by Technical Committee B/520, Glass and glazing in buildings, to Subcommittee B/520/1,
48、 Basic and transformed glass products, upon which the following bodies were represented: Association of Building Engineers Department of the Environment (Building Research Establishment) Department of the Environment (Construction Directorate) Flat glass Manufacturers Association Glass and glazing F
49、ederation Royal Institute of British Architects National annex NB (informative) Cross-reference Publication referred toCorresponding British Standard EN 572-1:1994BS EN 572-1:1995 Glass in building Basic soda lime silicate glass products Part 1: Definitions and general physical and mechanical properties Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 572-4:1995 BSI 389 Chiswick High Road London W4 4AL BSI British St