1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 0-626-18452-5 SANS 50572-3:2006Edition 2 EN 572-3:2004Edition 2SOUTH AFRICAN NATIONAL STANDARD Glass in building Basic soda lime silicate glass prod
4、ucts Part 3: Polished wire glass This national standard is the identical implementation of EN 572-3:2004 and is adopted with the permission of CEN, rue de Stassart 36, B-1050 Brussels. Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretoria 0001 tel: 012 428 7911 f
5、ax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 50572-3:2006 Edition 2 EN 572-3:2004 Edition 2 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee StanSA SC 5120.61C, Construction standards G
6、lazing materials in buildings, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. This part of SANS 50572 was published in December 2006. This SANS edition cancels and replaces the first SABS edition (SABS EN 572-3:1994). Document type: Euro
7、pean Standard Document subtype: Amendment Document stage: Unique Acceptance Procedure Document language: E G:UsersIVONNEoverprintsEN752-3.doc STD Version 2.0 CEN TC 129 Date: 2002-10 EN 572-3:1994/prA1:2002 CEN TC 129 Secretariat: IBN Glass in Building Basic soda lime silicate glass products Part 3:
8、 Polished wire glass Glas im Bauwesen Basiserzeugnisse aus Kalk-Natronglas Teil 3: Poliertes Drahtglas Verre dans la construction Produits de base: verre de silicate sodo-calcique Partie 3 : Verre arm poli ICS: Descriptors: SANS 50572-3:2006This s tandard may only be used and printed by approved sub
9、scription and freemailing clients of the SABS .EN 572-3:2004 (E) 2 Contents page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Dimensional requirements5 4.1 Thickness .5 4.1.1 General5 4.1.2 Tolerances5 4.2 Length, width and squareness.6 4.2.1 General6 4.2.2 Tolerances6 4
10、.3 Wire mesh.6 5 Quality requirements.6 5.1 General6 5.2 Methods of observation and measurement 7 5.2.1 Optical faults 7 5.2.2 Visual faults7 5.3 Acceptance levels7 5.3.1 Optical faults 7 5.3.2 Visual faults7 6 Designation 9 Bibliography10 SANS 50572-3:2006This s tandard may only be used and printed
11、 by approved subscription and freemailing clients of the SABS .EN 572-3:2004 (E) 3 Foreword This document (EN 572-3:2004) has been prepared by Technical Committee CEN/TC 129 “Glass in building“, the secretariat of which is held by IBN. This document supersedes EN 572-3:1994. This European Standard s
12、hall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2004, and conflicting national standards shall be withdrawn at the latest by December 2004. This document has been prepared under a mandate given to CEN by the Eur
13、opean Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). This European Standard “Glass in building Basic soda lime silicate glass products” consists of the following parts: EN 572-1 Definitions and general physical and mechanical properties EN
14、 572-2 Float glass EN 572-3 Polished wired glass EN 572-4 Drawn sheet glass EN 572-5 Patterned glass EN 572-6 Wired patterned glass EN 572-7 Wired or unwired channel shaped glass EN 572-8 Supplied and final cut sizes EN 572-9 Evaluation of conformity/Product standard According to the CEN/CENELEC Int
15、ernal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Neth
16、erlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. SANS 50572-3:2006This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 572-3:2004 (E) 4 1 Scope This Part of this European Standard specifies d
17、imensional and minimum quality requirements (in respect of optical, visual and wire faults) for polished wired glass, as defined in EN 572-1, for use in building. This Part of this standard applies only to polished wired glass supplied in rectangular panes and in stock sizes. EN 572-8 gives informat
18、ion on polished wired glass in sizes other than those covered by this Part. 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 publications
19、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 (including amendments
20、). EN 572-1:2004, Glass in building Basic soda lime silicate glass products Part 1: Definitions and general physical and mechanical properties 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 572-1:2004 and the following apply. 3.1 length, H,
21、and width, B defined with reference to the direction of draw of the glass ribbon as shown in Figure 1 Figure 1 Relationship between length, width and direction of draw Key 1 direction of draw 3.2 stock sizes glass delivered in the following sizes: Nominal length H: 1 650 mm to 3 820 mm Nominal width
22、 B: 1 980 mm to 2 540 mm SANS 50572-3:2006This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 572-3:2004 (E) 5 3.3 optical faults faults, which lead to distortions in the appearance of objects observed through the glass 3.4 visual faults fault
23、s, which alter the visual quality of the glass. They include spot faults, linear/extended faults and wire faults 3.5 spherical or quasi-spherical spot faults spot faults, whose larger dimension is less than or equal to twice the smaller dimension 3.6 elongated spot faults spot faults, whose larger d
24、imension is more than twice the smaller dimension 3.7 linear/extended faults faults, which can be on or in the glass, in the form of deposits, marks or scratches which occupy any extended length or area 3.8 wire faults deviation of the wire, penetration of the glass surface by the wire or break in t
25、he wire in the body of the glass 3.9 deviation of the wire deviation, y, of the wire in relation to a reference, e.g. line or straight edge 4 Dimensional requirements 4.1 Thickness 4.1.1 General The actual thickness shall be the average of four measurements, taken to the nearest 0,01 mm, one taken a
26、t the centre of each side. Measurement shall be by means of an instrument of the calliper micrometer type. 4.1.2 Tolerances The actual thickness, rounded to the nearest 0,1 mm shall not vary from the nominal thickness by more than the limits shown in Table 1. Table 1 Thickness tolerances Nominal thi
27、ckness Limiting values (mm) (mm) Minimum Maximum 6 6,0 7,4 10 9,1 10,9 SANS 50572-3:2006This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 572-3:2004 (E) 6 4.2 Length, width and squareness 4.2.1 General The nominal dimensions for length, H, a
28、nd width, B, being given, the pane should not be larger than a prescribed rectangle resulting from the 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 par
29、allel to one another and these rectangles shall have a common centre (see Figure 2). The limits of squareness shall also be prescribed by these rectangles. Figure 2 Determination of length, width and squareness 4.2.2 Tolerances The tolerances on nominal dimensions are 4 mm. 4.3 Wire mesh This is a s
30、quare steel mesh welded at all intersections of approximate dimensions 12,5 mm, manufactured from wire of diameter 0,42 mm. 5 Quality requirements 5.1 General One quality level is considered in this standard. This is determined by evaluation of the optical and visual faults. Many spot faults are ass
31、ociated with the wire, due to the incorporation of the wire into the glass. Spot faults can thus be distinguished by their relationship with the wire: distance from the wire 2 mm; distance from the wire 2 mm, or in contact with the wire. There are three different types of deviation of the wire consi
32、dered, which may occur simultaneously. They are shown in Figure 3 and are: SANS 50572-3:2006This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 572-3:2004 (E) 7 out of square; waviness; bow. 5.2 Methods of observation and measurement 5.2.1 Opt
33、ical faults The glass pane to be examined is placed 1 m from a bank of strip lights. The observer stands 2 m away from the glass pane. The strip lights are viewed through the glass and any disturbing distortions within the glass pane noted. 5.2.2 Visual faults 5.2.2.1 Spot faults Measure the dimensi
34、ons of these faults with a micrometer with graduations in tenths of a millimetre. Note the number, dimensions and concentration of the spot faults together with their relationship to the wire. 5.2.2.2 Linear/extended faults The glass pane to be examined is illuminated in conditions approximating to
35、diffuse daylight and is observed in front of a matt black screen (reflection coefficient between 0,2 and 0,4). Place the pane of glass to be examined vertically in front of the screen and parallel to it. Arrange the point of observation 2 m from the glass, keeping the direction of observation normal
36、 to the glass surface.View the pane of glass, and note the presence of visually disturbing faults. 5.2.2.3 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 in relation to this reference edge is measured (see Figure 3
37、). Any penetration of the glass surface by the wire is noted. Any breaks in the wire are noted. 5.3 Acceptance levels 5.3.1 Optical faults The observer should not see any disturbing distortions within the glass pane. 5.3.2 Visual faults 5.3.2.1 Spot faults a) Spherical and quasi-spherical spot fault
38、s situated in contact with the wire or 2 mm from the wire. If the larger dimension is 2,0 mm, they are acceptable without restriction. If the larger dimension is 2,0 mm and 4,0 mm, they are acceptable up to 0,5 per m2. They are not acceptable if the larger dimension is 4,0 mm. b) Spherical or quasi-
39、spherical spot faults situated 2,0 mm from the wire. SANS 50572-3:2006This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 572-3:2004 (E) 8 If the larger dimension is 1,0 mm, they are accepted without restriction. If the larger dimension is 1,0
40、 mm and 4,0 mm, they are acceptable up to 0,5 per m2. They are not acceptable if the larger dimension is 4,0 mm. c) Elongated spot faults of width 1,0 mm. If their length is 1,0 mm, they are acceptable without restriction. If their length is 1,0 mm, and 5,0 mm, they are acceptable if their number is
41、 10 per m2. If their length is 5,0 mm and 10,0 mm. They are acceptable if their number is 3 per m2. If their length is 10,0 mm and 15,0 mm, they are acceptable if their number is 2 per m2. They are not acceptable if their length is 15,0 mm. d) Elongated spot faults of width 1,0 mm. If the larger dim
42、ension is 4,0 mm, they are acceptable up to 0,5 per m2. They are not acceptable if the larger dimension is 4,0 mm. 5.3.2.2 Linear/extended faults The allowable number of faults is an average of 0,05 faults in every 20 m2of glass, related to at least 20 tonnes. 5.3.2.3 Wire faults The deviation, y, (
43、see Figure 3) shall not exceed 15 mm per metre. NOTE The deformation of the wires of each square of the mesh is not considered. No penetration of the surface is acceptable. Breaks in the wire are not acceptable. Out of square Waviness Bow NOTE The scale of these drawings is exaggerated to be explici
44、t. Figure 3 Representations of the types of wire deviations SANS 50572-3:2006This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 572-3:2004 (E) 9 6 Designation Polished wire glass in compliance with this standard shall be designated respective
45、ly by: type; nominal thickness in mm; nominal length, H, and width, B, in mm; reference to this Part of this standard. EXAMPLE Polished wired glass, intended for use in buildings, thickness 6 mm, length 3,30 m, width 1,98 m is designated as follows: Polished wired glass - EN 572-3 - 6 mm, 3 300 mm 1
46、 980 mm SANS 50572-3:2006This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 572-3:2004 (E) 10 Bibliography EN 572-8, Glass in building Basic soda lime silicate glass products Part 8: Supplied and final cut sizes EN 572-9, Glass in building Basic soda lime silicate glass products Part 9: Evaluation of conformity/Product standard Standards South AfricaSANS 50572-3:2006This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .
