《BS-EN-572-1-1995.pdf》由会员分享,可在线阅读,更多相关《BS-EN-572-1-1995.pdf(12页珍藏版)》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 572-1:1995 Glass in building Basic soda lime silicate glass products Part 1: Definitions and general physical and mechanical properties The European Standard EN 572-1:1994 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:19 GMT+
2、00:00 2006, Uncontrolled Copy, (c) BSI BS EN 572-1:1995 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 03-1999 The follow
3、ing BSI references relate to the work on this standard: Committee reference B/520/1 Draft for comment 91/18121 DC ISBN 0 580 23617 X Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standar
4、ds organizations of the 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 Organizati
5、on for Standardization 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 PortugalInstitut
6、o Portugus da Qualidade 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 sh
7、effieldun, na, Mon Nov 06 09:31:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 572-1:1995 BSI 03-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 Text of EN 572-13 National annex NA (informative) Committees responsibleInside back cover Licensed Copy:
8、 sheffieldun sheffieldun, na, Mon Nov 06 09:31:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 572-1:1995 ii BSI 03-1999 National foreword This Part of BS EN 572 has been prepared by Subcommittee B/520/1 and is the English language version of EN 572-1:1994 Glass in building Basic soda lime silic
9、ate glass products Part 1: Definitions and general physical and mechanical properties, published by the European Committee for Standardization (CEN). It does not replace any current British Standard. EN 572-1 was produced as a result of international discussions in which the United Kingdom took an a
10、ctive 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 of pages This documen
11、t comprises a front 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 co
12、ver. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 572-1 November 1994 ICS 81.040.20 Descriptors: Construction, glass, glassware, plate glass, wired glass, window glass, translucent glas
13、ses, definitions, chemical composition, physical properties, mechanical properties, quality, appearance English version Glass in building Basic soda lime silicate glass products Part 1: Definitions and general physical and mechancial properties Verre dans la construction Produits de base: verre de s
14、ilicate sodo-calcique Partie 1: Dfinitions et proprits physiques et mcaniques gnrales Glas im Bauwesen Basiserzeugnisse aus Kalk-Natronglas Teil 1: Definitionen und allgemeine physikalische und mechanische Eigenschaften This European Standard was approved by CEN on 1994-11-08. CEN members are bound
15、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 bibliographical references concerning such national standards may be obtained on application to the Cent
16、ral 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 CEN member into its own language and notified to the Central Secretariat has the same status as
17、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, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Eur
18、open de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN 572-1:1994 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 572-1:1994 BSI 0
19、3-1999 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 working draft based on the document ISO/TC 160 N56 Glass in buildings Basic product Part 1: C
20、lassification and general physical and mechanical properties. 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 May 1995, and conflicting national standards shall be withdrawn at the latest by May 1
21、995. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belguim, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom.
22、Contents Page Foreword2 1Scope3 2Normative references3 3Definitions3 3.1Float glass3 3.2Drawn sheet glass3 3.3Patterned glass3 3.4Wired patterned glass3 3.5Polished wired glass3 3.6Wired or unwired channel shaped glass3 4Chemical composition3 4.1Tint3 5Physical and mechanical characteristics4 5.1Gen
23、eral characteristics4 5.2Designation of clear glass4 5.3Stability of the physical and chemical characteristics5 6General quality criteria and their evaluation5 6.1Optical5 6.2Appearance5 Table 1 General characteristic values4 Table 2 Minimum light transmittance values for designating a transparent g
24、lass product as clear glass4 Table 3 Minimum light transmittance values for designating a translucent glass product as clear glass5 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 572-1:1994 BSI 03-19993 1 Scope This European Standard def
25、ines and classifies basic glass products, indicates their chemical composition, their main physical and mechanical characteristics and defines their general quality criteria. Specific dimensions and dimensional tolerances, description of faults, quality limits and designation for each basic product
26、type are not included in this Part, but are given in other Parts of this standard specific to each product type. 2 Normative references This European Standard incorporates by dated or undated references, provisions from other publications. These normative references are cited at the appropriate plac
27、es 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 incorporated in it by amendment or revision. For undated references the latest edition of the publication refer
28、red to applies. prEN 410, Glass in building Determination of light transmittance, solar direct transmittance, total solar energy transmittance and ultraviolet transmittance, and related glazing characteristics (October 1990). 3 Definitions For the purposes of this standard the following definitions
29、apply: 3.1 float glass flat, transparent, clear or tinted soda-lime silicate glass having parallel and polished faces obtained by continuous casting and flotation on a metal bath NOTEIn French called “glace” and in German “Floatglas”. 3.2 drawn sheet glass flat, transparent, clear or tinted soda-lim
30、e silicate glass obtained by continuous drawing, initially vertically, of a regular thickness and with the two surfaces fire polished 3.3 patterned glass flat, translucent, clear or tinted soda-lime silicate glass obtained by continuous casting and rolling 3.4 wired patterned glass flat, translucent
31、, clear or tinted soda-lime silicate glass obtained by continuous casting and rolling which has a steel mesh welded at all intersections incorporated in the glass during its manufacturing process. The surfaces may be either patterned or plain NOTEIn German wired patterned glass with plain surfaces i
32、s called “Drahtglas”. 3.5 polished wired glass flat, transparent, clear soda-lime silicate glass having parallel and polished faces obtained by grinding and polishing the faces of wired patterned glass 3.6 wired or unwired channel shaped glass translucent, clear or tinted soda-lime silicate glass, w
33、ired or unwired, obtained by continuous casting and rolling, which is formed into a U shape during the manufacturing process 4 Chemical composition The basic glass products covered by this standard are all manufactured from soda-lime silicate glass. The magnitude of the proportions by mass of the pr
34、incipal constituents of soda-lime silicate glass covered by this standard is as follows: In addition to the above general composition, these glasses may also contain small quantities of other substances. 4.1 Tint Body tinted glass is obtained by the addition of suitable materials. Silicon dioxide (S
35、iO2)69 % to 74 % Calcium oxide (CaO)5 % to 12 % Sodium oxide (Na2O)12 % to 16 % Magnesium oxide (MgO)0 % to 6 % Aluminium oxide (Al2O3)0 % to 3 % Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 572-1:1994 4 BSI 03-1999 Table 1 General cha
36、racteristic values 5 Physical and mechanical characteristics 5.1 General characteristics Conventional numerical values for the physical and mechanical characteristics of basic glass products are given in Table 1. These values, for normal annealed glass without any further toughening are not precise
37、requirements with which the glass shall strictly comply, but are the generally accepted figures for use in calculations where a high degree of accuracy is not required. 5.2 Designation of clear glass A glass product is designated as clear glass when it is not tinted and when the light transmittance
38、of the glass material unmodified by the possible presence of a coating or surface roughness of, for example, a patterned glass complies with 5.2.1 and 5.2.2. In order to measure the light transmittance characteristics of glass, to determine whether it can be designated as a clear glass, it is necess
39、ary, in some cases, to carry out a pretreatment: coatings on smooth surfaces have to be eliminated, without modifying the thickness of the glass substrate; rough surfaces, with or without coatings, have to be eliminated by smoothing and polishing. The thickness of the glass will be modified by this
40、process. The light transmittance of the glass substrate shall be measured with its surfaces in a polished condition. NOTEThe light transmittance values given in 5.2.1 and 5.2.2 are not suitable for design. They are values used only for the designation of clear glass and exclude the effects of coatin
41、gs and of surface roughness. The values of light transmittance used for design could be obtained from the glass manufacturer. They are determined in accordance with EN 410. 5.2.1 Clear transparent glass A transparent glass product is designated as clear glass when it is not tinted and when its light
42、 transmittance: after any necessary pretreatment; measured according to EN 410; and rounded to the nearest 0,01; is greater than or equal to the value given in Table 2 for the nominal thickness of the glass product. NOTEThe limiting value given in Table 2 is appropriate provided that the measured th
43、ickness of the glass product is within the allowable tolerances for the nominal thickness of that glass product. Table 2 Minimum light transmittance values for designating a transparent glass product as clear glass 5.2.2 Clear translucent glass A translucent glass product is designated as clear glas
44、s when it is not tinted and when its light transmittance: after any necessary pretreatment; measured according to EN 410; and rounded to the nearest 0,01; is greater than or equal to the value obtained by linear interpolation from Table 3, for the measured thickness of the specimen. NOTEThe limiting
45、 value will vary with the exact thickness of the specimen after its pretreatment. CharacteristicSymbolNumerical value and unit Density (at 18 C) Hardness Youngs modulus (modulus of elasticity) Poissons ratio Specific heat capacity Average coefficient of linear expansion between 20 C and 300 C Therma
46、l conductivity Mean refractive index to visible radiation (380 nm to 780 nm) E c n 2 500 kg/m3 6 units (Mohs scale) 7 1010 Pa 0,2 0,72 103 J/(kgK) 9 106 K1 1 W/(mK) 1,5 Nominal thickness in mmMinimum value of light transmittance 2 3 4 5 6 8 10 12 15 19 25 0,89 0,88 0,87 0,86 0,85 0,83 0,81 0,79 0,76
47、 0,72 0,67 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 09:31:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 572-1:1994 BSI 03-19995 Table 3 Minimum light transmittance values for designating a translucent glass product as clear glass 5.3 Stability of physical and chemical characteristic
48、s For basic glass products, the physical and chemical characteristics can be considered as remaining constant over time. a) Since glass is insensitive to photochemical effects, the spectral properties (transmissions of light and solar energy) of the basic glass products are not modified by direct or
49、 indirect solar radiation. b) The surface of glass used in building is virtually insensitive to attack from the environment. 6 General quality criteria and their evaluation 6.1 Optical This criterion concerns the visibility of objects observed through the glass and only applies to transparent glass products. The main faults that can affect the optical quality are distortion of the surface and lack of homogeneity in the body of the glass. The optical quality shall be evaluated by mea
链接地址:https://www.31doc.com/p-3743063.html