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 0-626-18450-9 SANS 50572-4:2006Edition 2 EN 572-4:2004Edition 2SOUTH AFRICAN NATIONAL STANDARD Glass in building Basic soda lime silicate glass prod
4、ucts Part 4: Drawn sheet glass This national standard is the identical implementation of EN 572-4:2004 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 fax
5、: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 50572-4:2006 Edition 2 EN 572-4:2004 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 Gla
6、zing 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 572-4:1994). EUROPEAN STANDARDNORM
7、E EUROPENNEEUROPISCHE NORMEN 572-4June 2004ICS 81.040.20 Supersedes EN 572-4:1994English versionGlass in building - Basic soda lime silicate glass products - Part4: Drawn sheet glassVerre dans la construction - Produits de base: verre desilicate sodo-calcique - Partie 4: Verre tirGlas im Bauwesen -
8、Basiserzeugnisse aus Kalk-Natronsilicatglas Teil 4: Gezogenes FlachglasThis European Standard was approved by CEN on 1 April 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standar
9、d without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 langua
10、ge made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,German
11、y, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Cent
12、re: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 572-4:2004: ESANS 50572-4:2006This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 5
13、72-4:2004 (E) 2 Contents page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Dimensional requirements6 4.1 Thickness .6 4.1.1 General6 4.1.2 Tolerances 6 4.2 Length, width and squareness .6 4.2.1 General6 4.2.2 Tolerances 7 5 Quality requirements.7 5.2.1 Optical faults of
14、drawn sheet glass (3.3).7 5.2.2 Visual faults8 5.3 Acceptance levels8 6 Designation 9 Bibliography 10 SANS 50572-4:2006This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 572-4:2004 (E) 3 Foreword This document (EN 572-4:2004) has been prepare
15、d by Technical Committee CEN/TC 129 “Glass in building“, the secretariat of which is held by IBN. This document supersedes EN 572-4:1994. 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 December 2
16、004, 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 European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). This European Standard “
17、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 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
18、-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 Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria,
19、 Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. SANS 50572-4:2006This s tandard may
20、only be used and printed by approved subscription and freemailing clients of the SABS .EN 572-4:2004 (E) 4 1 Scope This Part of this 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 u
21、se in building. This Part of this standard applies only to drawn sheet glass supplied in rectangular panes and in stock sizes. EN 572-8 gives information on drawn sheet glass in sizes other than those covered by this Part. 2 Normative references This European Standard incorporates by dated or undate
22、d 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 apply to this European Standard only when
23、incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 572-1:2004, Glass in building Basic soda lime silicate glass products Part 1: Definitions and general physical and mechanical properties. 3 Terms a
24、nd definitions For the purposes of this European Standard, the terms and definitions given in EN 572-1:2004 and the following apply. 3.1 new antique drawn sheet glass glass produced by the drawn sheet process that has specific surface phenomena intentionally incorporated during the drawing process 3
25、.2 drawn sheet glass for renovation drawn sheet glass that has been allowed to develop defects, e.g. gaseous, solid inclusions and linear/extended faults, that are representative of historic drawn sheet production 3.3 drawn sheet glass flat, transparent, clear or tinted soda-lime silicate glass obta
26、ined by continuous drawing, initially vertically, of a regular thickness and with the two surfaces fire polished containing a minimum number of visual faults 3.4 length, H, and width, B defined with reference to the direction of draw of the glass ribbon as shown in Figure 1 SANS 50572-4:2006This s t
27、andard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 572-4:2004 (E) 5 Figure 1 Relationship between length, width and direction of draw Key 1 direction of draw 3.5 stock sizes glass delivered in the sizes given in Table 1: Table 1 Stock sizes Nominal l
28、ength H (mm) Nominal width B (mm) New antique drawn sheet glass 1 200 to 2 160 1 450 to 2 160 Drawn sheet glass for renovation 1 200 to 2 160 1 450 to 2 160 Drawn sheet glass 1 600 to 2 160 2 440 to 2 880 3.6 optical faults faults, which lead to distortions in the appearance of objects observed thro
29、ugh the glass 3.7 visual faults faults, which alter the visual quality of the glass. They include spot faults and linear/extended faults 3.8 spot faults gaseous inclusions or other spot faults, e.g. solid inclusions, marks or deposits of small size 3.9 gaseous inclusions faults, which consist genera
30、lly of an elongated bubble of gas 3.10 linear/extended faults faults, which can be on or in the glass, in the form of deposits, marks or scratches that occupy an extended length or area 3.11 concentration, c sum of the lengths of gaseous inclusions 1,0 mm in any circle of 400 mm diameter SANS 50572-
31、4:2006This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 572-4:2004 (E) 6 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 at the ce
32、ntre 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 tolerances shown in Table 2. Table 2 Allowable tolerances on nominal thick
33、ness Tolerances (mm) Nominal thickness (mm) New antique drawn sheet glass Drawn sheet glass for renovation Drawn sheet glass 2 2,8 3 4 5 6 8 10 12 0,3 0,3 0,3 0,2 0,3 0,3 0,3 0,3 0,4 0,2 0,2 0,2 0,3 0,3 0,4 0,5 0,6 4.2 Length, width and squareness 4.2.1 General The nominal dimensions for length, H,
34、and width, B, being given, the pane shall 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
35、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. SANS 50572-4:2006This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 572-4:2004 (E) 7 F
36、igure 2 Determination of length, width and squareness 4.2.2 Tolerances The tolerances on the nominal dimensions are 5 mm. 5 Quality requirements 5.1 General Drawn sheet glass (3.3) is classified according to both optical and visual faults. New antique sheet glass (3.1) and sheet glass for renovation
37、 (3.2) are classified according to their levels of visual faults. 5.2 Methods of observation and measurement 5.2.1 Optical faults of drawn sheet glass (3.3) A reticulated screen is observed through the pane of glass to be examined. The screen should have approximately the same dimensions as the pane
38、 of glass to be examined. It should consist of a matt black background (reflection coefficient between 0,2 and 0,4) having a network 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 m
39、m, each line offset by 100 mm from the lines above and below. The lighting of the screen should correspond to diffuse natural or 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 ob
40、servation perpendicular to the screen. Arrange the pane of glass to form an angle of 45 with the plane of the screen. 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 s
41、creen. Arrange the pane of glass to form an angle of 45 with the plane of the screen. SANS 50572-4:2006This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 572-4:2004 (E) 8 View the screen through the glass and note any disturbing distortions t
42、o the pattern. 5.2.2 Visual faults 5.2.2.1 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 faults. 5.2.2.2 Linear/extended faults The glass pane to be ex
43、amined 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 observation 2 m from the glass, keeping the direction of observation
44、 normal to the glass surface. View the pane of glass, and note the presence of visually disturbing faults. 5.3 Acceptance levels The acceptance levels are summarised in Tables 3A and 3B: Table 3A Summary of acceptance levels for new antique drawn sheet glass and drawn sheet glass for renovation Faul
45、ts Acceptance criteria Optical Not applicable Visual 1 Spot faults Gaseous inclusions 5 mm 5 mm 30 mm 30 mm Acceptable 2/m2 Not acceptable 1.2 Solid spot faults 2 mm 2 mm 5 mm 5 mm 1 per m2 /5 per m2 if tinted 1 per m2 Not acceptable Linear/extended faults 10 mm 10 mm 50mm 50 mm Acceptable 2/m2 Not
46、acceptable SANS 50572-4:2006This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 572-4:2004 (E) 9 Table 3B Summary of acceptance levels for drawn sheet glass Faults Acceptance criteria Optical No disturbing distortions in observation conditions
47、 given under 5.1.1 Visual 1 Spot faults 1.1 Gaseous inclusions 1 mm Acceptable 1.2 Gaseous inclusions 1 mm acceptable if: maximum length; sum of lengths/m2; maximum number/m2. 6 mm 26 mm 6 1.3 Concentration, c 14 mm 1.4 Other spot faults 1 mm 1 per m21.5 Remark concerning all spot faults In the case
48、 of a single fault per m2the maximum dimension may be increase by 25 % 2 Linear/extended faults The allowable number of faults is an average of 0,05 faults in 20 m2of glass related to at least 20 tonnes 6 Designation Sheet glass in compliance with this standard shall be designated respectively by: t
49、ype, according to the definitions (see clause 3); 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 Drawn sheet glass, clear, intended for renovation in buildings, thickness 3 mm, length 1,2 m, width 1,45 m, is designated as follows: Drawn sheet glass for renovation - EN 572-4 - clear, 3 mm, 1 200 mm x 1 450 mm SANS 50572-4:2006This s tandard may only be used and printed by app
