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1、BRITISH STANDARD BS EN 572-7:1995 Glass in building Basic soda lime silicate glass products Part 7: Wired or unwired channel shaped glass The European Standard EN 572-7:1994 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:48 GMT+00:00 2006, Uncontrol
2、led Copy, (c) BSI BS EN 572-7:1995 This British Standard, having been prepared under the direction of the the 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 09-1999 The following BSI references re
3、late to the work on this standard: Committee reference B/520/1 Draft for comment 92/11142 DC ISBN 0 580 2364 2 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of th
4、e following countries: 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
5、 IcelandTechnological 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 Qualidad
6、e SpainAsociacin Espaola 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
7、 06 09:31:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 572-7:1995 BSI 09-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 Text of EN 572-73 National annex NA (informative) Committees responsibleInside back cover National annex NB (informative) Cros
8、s-referenceInside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 572-7:1995 ii BSI 09-1999 National foreword This Part of BS EN 572 has been prepared by Subcommittee B/520/1 and is the English language version of EN 572-7:1
9、994 Glass in building Basic soda lime silicate glass products Part 7: Wired or unwired channel shaped glass, published by the European Committee for Standardization (CEN). It does not replace any current British Standard. EN 572-7 was produced as a result of international discussions in which the Un
10、ited Kingdom took an active part. 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
11、 of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 8, 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
12、on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 572-7 November 1994 ICS 81.040.20 Descriptors: Construction, glass, glassware, wired glass, dimensions, dimension
13、al tolerances, appearance, defects, quality, acceptability, designation English version Glass in building Basic soda lime silicate glass products Part 7: Wired or unwired channel shaped glass Verre dans la construction Produits de base: verre de silicate sodo-calcique Partie 7: Verre profil arm ou n
14、on arm Glas im Bauwesen Basiserzeugnisse aus Kalk-Natronglas Teil 7: Profilbauglas mit oder ohne Drahteinlage 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 St
15、andard 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 Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, Frenc
16、h, 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, Fr
17、ance, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, 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
18、1994 Copyright reserved to CEN members Ref. No. EN 572-7:1994 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 572-7:1994 BSI 09-1999 2 Foreword This European Standard has been prepared by the Technical Committee CEN/TC 129, Glass in bui
19、lding, the secretariat of which is held by IBN. CEN/TC 129/WG1, Basic glass products, prepared a working draft based on the document ISO/TC 160 N56 Glass in buildings Basic product Part 7: Wired or unwired channel shaped glass. This document was drawn up by ISO/TC 160, Glass in buildings. This Europ
20、ean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 1995, and conflicting national standards shall be withdrawn at the latest by May 1995. According to the CEN/CENELEC Internal Regulations, the following co
21、untries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom. Contents Page Foreword2 1Scope3 2Normative references3 3Definitions3 3.1
22、Patterned building glass3 3.2Wired channel shaped glass3 3.3Length, H, width, B, and flange height, d3 3.4Stock sizes3 3.5Visual faults3 3.6Flange deviation3 3.7Wire faults3 3.8Wire deviation3 4Dimensional requirements3 4.1Method of measurement3 4.2Tolerances4 5Quality requirements4 5.1Methods of ob
23、servation and measurement4 5.2Acceptance levels5 6Designation5 Figure 1 Relationship between U-channel dimensions and direction of draw4 Figure 2 Determination of flange deviation5 Figure 3 Determination of squareness of cut6 Figure 4 Determination of wire deviation7 Table 1 Tolerances on nominal wi
24、dth, B, height of flange, d, and thickness c5 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 572-7:1994 BSI 09-19993 1 Scope This Part of this European Standard specifies dimensional and minimum quality requirements (in respect of visual
25、 and wire faults) for channel shaped glass as defined in EN 572-1 for use in building. This Part of this standard covers channel shaped glass supplied in stock sizes. This Part of this standard does not apply to channel shaped glass in cut sizes for final end use. 2 Normative references This Europea
26、n 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 publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications a
27、pply 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 in building Basic soda lime silicate glass products Part 1: Definitions and general physical and mechanical properti
28、es. 3 Definitions For the purposes of this standard the following definitions apply. 3.1 patterned channel shaped glass this is a channel shaped glass with one patterned surface. A number of different patterns are available 3.2 wired channel shaped glass this is a channel shaped glass which has a wi
29、re inlay in the web, i.e. across the width, B, which runs in the direction of the length, H. Additional wires may also be in the flanges 3.3 length, H, width, B, and flange height, d these are defined with reference to the direction of draw of the glass ribbon as shown in Figure 1. All corners are r
30、ounded 3.4 stock sizes Glass delivered in the following sizes: 3.4.1 nominal length, H these are supplied in multiples of 250 mm NOTEMaximum length, H, available: 7 000 mm. 3.4.2 nominal width, B these range from 232 mm to 498 mm 3.4.3 nominal height of flange, d these are either 41 mm or 60 mm NOTE
31、Not all widths, B, are available with all flange heights, d. 3.5 visual faults these are faults that alter the visual quality of the glass. These include bubbles, ream, scratches and inclusions and where applicable wire faults 3.6 flange deviation this is a deviation, z, of flange from the vertical
32、(see Figure 2) 3.7 wire faults these are deviation of the wire, penetration of the glass surface by the wire or break in the wire in the body of the glass 3.8 wire deviation this is a deviation, y, of wire relative to a reference, e.g. line or straight edge, (see Figure 4) 4 Dimensional requirements
33、 4.1 Method of measurement 4.1.1 Width, B, and height of flange, d These are measured at both cut ends of the piece using a vernier calliper with an accuracy of 0,1 mm. 4.1.2 Length, H This is measured at the centre of the web. 4.1.3 Thickness c The actual thickness is measured at both cut ends. Mea
34、surements, to an accuracy of 0,1 mm, are made in the centre of the web and flanges. Measurement should be made by means of an instrument of the plate gauge type with a diameter of 50 mm 5 mm. 4.1.4 Flange deviation The deviation of the flange, z, from perpendicular to the web is determined with a ri
35、ght angle, as shown in Figure 2. 4.1.5 Squareness of cut The out of squareness of the web and flanges is determined at both cut ends. It is measured relative to a plane perpendicular to the direction of draw of the glass at the intersection of the centre line of the web and of the cut edge (see Figu
36、re 3). The deviation of the flange from the plane is measured. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 572-7:1994 4 BSI 09-1999 4.1.6 Wire inlay The relationship between the width of the wire inlay, in the web, and the width, B, o
37、f the web should be obtained by measurement. The actual distance between adjacent wires should be measured together with any variation in the spacing. The diameter of the wire should be measured. 4.2 Tolerances 4.2.1 Width, B, height of flange, d, and thickness c All measured values shall comply wit
38、h Table 1. 4.2.2 Length The tolerance on measured length, H, is 3,0 mm. 4.2.3 Flange deviation The flange deviation, z, (see Figure 2) should not exceed 1,0 mm. 4.2.4 Squareness of cut The deviation (see Figure 3) shall not exceed 3 mm. 4.2.5 Wire inlay The wire inlay shall cover at least 75 % of th
39、e web width, B. The maximum distance between adjacent wires must not exceed 35 mm. The allowable tolerance between adjacent wires is 6 mm. The diameter of the wire should be between 0,3 mm and 0,7 mm. 5 Quality requirements One quality level is considered in this standard. This is determined by eval
40、uation of the visual and wire faults. 5.1 Methods of observation and measurement 5.1.1 Visual faults The piece of channel shaped glass to be examined is illuminated in conditions approximating to diffuse daylight and is observed in front of a white background. Place the glass to be examined vertical
41、ly in front of the screen. Arrange the point of observation 2 m from the glass, keeping the direction of observation normal to the glass surface. Note the presence of bubbles, ream, scratches and inclusions. Figure 1 Relationship between U-channel dimensions and direction of draw Licensed Copy: shef
42、fieldun sheffieldun, na, Mon Nov 06 09:31:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 572-7:1994 BSI 09-19995 5.1.2 Wire faults A reference, e.g. line or straight edge, is placed parallel to the direction of the wires. The deviation, y, of the wire inlay in relation to this reference edge is me
43、asured (see Figure 4). Any penetration of the glass surface by the wire is noted. Any breaks in the wire are noted. 5.2 Acceptance levels 5.2.1 Visual faults If any bubbles, ream, scratches or inclusions are noted. They are not allowed. 5.2.2 Wire faults The deviation, y, (see Figure 4) shall not ex
44、ceed 5 mm per metre. In no case is the wire inlay allowed to penetrate the surface. Breaks in the wire are not acceptable. 6 Designation Wired or unwired channel shaped glasses in compliance with this standard shall be designated respectively by: type (wired or unwired glass); tint (manufacturers re
45、ference) or clear; patterned (manufacturers reference) or not; nominal thickness in mm; nominal width, B, in mm; nominal height of flange, d, in mm; nominal length, H, in mm; reference to this Part of this standard. Example Wired channel shaped glass, clear, pattern reference “PATTERN”, thickness 6
46、mm, width 26,2 cm, height of flange 41 mm, length 1,50 m, intended for use in buildings, is designated as follows: Wired channel shaped glass, clear, “PATTERN”, 6 mm, 262 mm, 41 mm, 1 500 mm, EN 572-7. Table 1 Tolerances on nominal width, B, height of flange, d, and thickness c Width, B (mm) Height
47、of flange, d mm Thickness, c mm NominalToleranceNominalToleranceNominalTolerance 232 to 498 2,041 1,06 0,2 232 to 331 2,060 1,07 0,2 Figure 2 Determination of flange deviation Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 572-7:1994 6 B
48、SI 09-1999 Figure 3 Determination of squareness of cut Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 572-7:1994 BSI 09-19997 Figure 4 Determination of wire deviation Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:48 GMT+00
49、:00 2006, Uncontrolled Copy, (c) BSI 8 blank Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 572-7:1995 BSI 09-1999 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, Basic and transformed glass products, upon which the following bodies w