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1、BRITISH STANDARD BS 952-1:1995 Glass for glazing Part 1: Classification NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:48:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 952-1:1995 This
2、British Standard, having been prepared under the direction of the Sector Board for Building and Civil Engineering, was published under the authority of the Standards Board and comes into effect on 15 July 1995 BSI 12-1998 First published March 1941 Second edition July 1953 Third edition January 1964
3、 Fourth edition February 1978 Fifth edition July 1995 The following BSI references relate to the work on this standard Committee reference B/520/1 Draft for comment 93/110495 DC ISBN 0 580 24292 7 Committees responsible for this British Standard The preparation of this British Standard was entrusted
4、 by Technical Committee B/520, Glass and glazing in building, to Subcommittee B/520/1, 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 Environme
5、nt (Property and Buildings Directorate) Flat Glass Manufacturers Association Glass and Glazing Federation Royal Institute of British Architects Co-opted member Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Fri Dec
6、08 04:48:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 952-1:1995 BSI 12-1998 i Contents Page Committees responsibleInside front cover Forewordii Section 1. General 1.1Scope1 1.2Normative references1 1.3Definitions1 1.4Materials2 1.5Dimensions3 Section 2. Annealed flat soda lime-silicate glass 2.
7、1Float glass5 2.2Sheet glass5 2.3Patterned glass6 2.4Wired glass6 2.5Availability of wired glass7 Section 3. Coated glass 3.1General9 3.2Reflective float glass9 3.3Low-emissivity float glass9 3.4Anti-reflection float glass9 3.5Availability of coated glass9 Section 4. Processed flat soda lime-silicat
8、e glass 4.1Thermally toughened glass11 4.2Heat strengthened glass11 4.3Laminated glass12 4.4Insulating glass units15 4.5Silvered glass15 Section 5. Miscellaneous soda lime-silicate glasses 5.1Flashed or pot coloured sheet glass17 5.2Diffuse reflection glass17 5.3Copper lights17 5.4Leaded lights17 5.
9、5Bullions17 5.6Hollow glass blocks17 5.7Lenses: roof and pavement17 5.8Channel shaped glass18 5.9Mouth-blown antique and opalescent glasses18 Section 6. Special composition glasses 6.1Borosilicate glass19 6.2Glass ceramics19 Table 1 Availability of clear float glass5 Table 2 Availability of clear sh
10、eet glass6 Table 3 Availability of clear patterned glass6 Table 4 Availability of wired glass7 Table 5 Availability of thermally toughened glass12 Table 6 Availability of pvb laminated glass14 Table 7 Availability of flashed and pot coloured sheet glass18 List of referencesInside back cover Licensed
11、 Copy: London South Bank University, London South Bank University, Fri Dec 08 04:48:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 952-1:1995 ii BSI 12-1998 Foreword This Part of BS 952 was prepared by Subcommittee B/520/1. It has been used for many years as a valuable source of background and con
12、tractual information by architects, specifiers and other glass users. The first edition of this British Standard was published in 1941 and it has since been revised in 1953, 1964 and 1978, principally to take account of product developments. This present revision, which has been prepared under the d
13、irection of the Sector Board for Building and Civil Engineering, supersedes the 1978 edition, which is withdrawn. It brings up to date the information on glass types, thicknesses, mass/unit area and normally available maximum sizes. New sections have been added covering coated glass, borosilicate gl
14、ass and glass ceramics to reflect the increasing use of these products. Work is currently in progress within CEN/TC 129, Glass in building, to produce European Standards for the various glass types. The first product standards, dealing with basic soda lime-silicate glasses (BS EN 572-1 to BS EN 572-
15、7), have recently been published. Further standards covering all of the major processed glass products and glass compositions will be published as European Standards over the next few years and adopted as British Standards, thus augmenting the information within this standard. A British Standard doe
16、s 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 front cover, an insi
17、de front cover, pages i and ii, pages 1 to 21 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:48:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI B
18、S 952-1:1995 BSI 12-1998 1 Section 1. General1 1.1 Scope This Part of BS 952 classifies glass for use in building into three glass compositions: the commonly used soda lime-silicate glass, borosilicate glass and glass ceramics. Terms and definitions, together with details of nominal thickness, thick
19、ness tolerance, mass/unit area and the normally available maximum sizes are given. 1.2 Normative references This Part of BS 952 incorporates, by reference, provisions from other publications. These normative references are made at the appropriate places in the text and the cited publications are lis
20、ted on the inside back cover. For dated references, only the edition cited applies; any subsequent amendments to, or revisions of, any of the cited publication apply to this Part of BS 952 only when incorporated in the reference by amendment or revision. For undated references, the latest edition of
21、 the cited publication applies, together with any amendments. 1.3 Definitions For the purposes of this British Standard, the following definitions apply. 1.3.1 annealed glass glass that has been subjected to controlled cooling to reduce the presence of residual stresses in the glass thus allowing ea
22、sy cutting. It is ordinary glass which includes float glass, sheet glass, patterned glass and wired glass and is independent of the glass composition 1.3.2 off-line coating process whereby individual pieces of glass, e.g. annealed, toughened, heat strengthened or laminated, are coated 1.3.3 on-line
23、coating process whereby the coating is applied to the surface of a continually moving ribbon of glass during the manufacturing process, prior to the glass being initially cut 1.3.4 safety glass glass which when tested in accordance with BS 6206 either does not break, or breaks safely, and affords pr
24、otection from cutting and piercing injuries in the event of accidental human impact 1.3.5 security glass glass that affords protection against a specified level of attack see 4.3.3b) 1.3.6 translucent glass glass that transmits light with varying degrees of diffusion so that vision is not clear NOTE
25、The diffusion may be produced either by patterning the surface during manufacture, or by surface treatment after manufacture, i.e. sandblasting, acid etching, etc. These processes are dealt with in BS 952-2. 1.3.7 transparent glass glass that transmits light and permits clear vision through it Licen
26、sed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:48:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 952-1:1995 2 BSI 12-1998 Section 1 1.4 Materials 1.4.1 General All glasses for use in building (see 1.4.2, 1.4.3 and 1.4.4) should be such that the physical and che
27、mical characteristics can be considered constant over time. They should be: a) insensitive to photochemical effects, i.e. the spectral properties (transmission of light and solar energy) are not modified by direct or indirect solar radiation. b) insensitive to attack from the environment, i.e. surfa
28、ce deterioration will not develop after glazing under normal conditions of use, provided the glass is cleaned at reasonable intervals. 1.4.2 Soda lime-silicate glass (see BS EN 572-1) The proportions by mass of the principal constituents of all the soda lime-silicate glass products covered by BS EN
29、572 and this standard are: 1.4.3 Borosilicate glass The proportions by mass of the principal constituents of all the borosilicate glass products covered by this standard are: 1.4.4 Glass ceramics The proportions by mass of the principal constituents of all the glass ceramic products covered by this
30、standard are: Silicon dioxideSiO269 % to74 % Calcium oxideCaO5 % to12 % Sodium oxideNa2O12 % to16 % Magnesium oxideMgO0 % to6 % Aluminium oxideAl2O30 % to3 % Silicon dioxideSiO270 % to87 % Boron oxideB2O37 % to15 % Sodium oxideNa2O Potassium oxideK2O1 % to8 % Aluminium oxideAl2O3 Others0 % to8 % Sil
31、icon dioxideSiO250 % to80 % Aluminium oxideAl2O315 % to27 % Lithium oxideLi2O0 % to5 % Zinc oxideZnO1 % to5 % Titanium dioxideTiO20 % to5 % Zirconium dioxideZrO20 % to5 % Magnesium oxideMgO Calcium oxideCaO0 % to8 % Barium oxideBaO Sodium oxideNa2O Potassium oxideK2O0 % to2 % Others0 % to5 % License
32、d Copy: London South Bank University, London South Bank University, Fri Dec 08 04:48:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 952-1:1995 BSI 12-1998 3 Section 1 1.5 Dimensions 1.5.1 Thickness 1.5.1.1 General The methods for the determination of glass thickness are given in the relevant produ
33、ct standard, e.g. BS EN 572-2 for soda lime-silicate float glass. 1.5.1.2 Tolerances The tolerances on thickness are given in the appropriate product standard. They are reproduced in this standard in tables relating to the availability of that particular product. 1.5.2 Length, width and squareness 1
34、.5.2.1 General The method for the determination of length, width and squareness are given in the relevant product standard, e.g. BS EN 572-2 for soda lime-silicate float glass. 1.5.2.2 Tolerances These are given in the relevant product standard. They can relate to both stock and finished sizes depen
35、ding on the product. They are not reproduced in this standard. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:48:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:48
36、:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 952-1:1995 BSI 12-1998 5 Section 2. Annealed flat soda-lime-silicate glass2 2.1 Float glass (see BS EN 572-2) 2.1.1 Clear float glass This is transparent glass, the surfaces of which are flat and parallel so that they provide clear, undistorted visio
37、n and reflection. Float glass is manufactured by allowing glass from a tank furnace to flow across a bath of molten metal. 2.1.2 Body tinted float glass This is transparent glass in which the whole body of the glass is tinted. Tints available are green, grey, bronze and blue. Thicknesses available a
38、re 3, 4, 5, 6, 8, 10 and 12 mm; whether all thicknesses are available in each tint depends on the manufacturer. Normal maximum sizes may differ from those for clear float glass. 2.1.3 Availability of clear float glass Table 1 gives the range of nominal thicknesses, thickness tolerances, mass/unit ar
39、ea and maximum sizes normally available for clear float glass. Table 1 Availability of clear float glass (see 2.1.3) 2.2 Sheet glass (see BS EN 572-4) 2.2.1 Clear sheet glass This is transparent glass manufactured by the flat drawn process. Sheet glass has natural fire-finished surfaces but, because
40、 the two surfaces are never perfectly flat and parallel, there is always some distortion of vision and reflection. 2.2.2 Body tinted sheet glass This is transparent glass in which the whole body of the glass is tinted. Such glass reduces solar radiation transmission by increased absorption. Generall
41、y available are green, grey and bronze tints. For information on thicknesses and normal maximum sizes the manufacturers should be consulted. Nominal thicknessTolerance on thicknessApproximate mass/unit area Normal maximum size mmmmkg/m2mm 30.27.53 210 6 000 40.210.03 210 6 000 50.212.53 210 6 000 60
42、.215.03 210 6 000 80.320.03 210 6 000 100.325.03 210 6 000 120.330.03 210 6 000 150.537.53 210 6 000 191.047.53 210 6 000 251.062.53 210 5 100 NOTEMass/unit area (i.e. kg/m2) was traditionally referred to as “weight” in the glass and glazing industries. Licensed Copy: London South Bank University, L
43、ondon South Bank University, Fri Dec 08 04:48:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 952-1:1995 6 BSI 12-1998 Section 2 2.2.3 Availability of clear sheet glass Table 2 includes the range of nominal thicknesses, thickness tolerances, mass/unit area and maximum sizes normally available for c
44、lear sheet glass. Table 2 Availability of clear sheet glass (see 2.2.3) 2.3 Patterned glass (see BS EN 572-5) 2.3.1 Clear patterned glass This is translucent glass manufactured by the rolling process. Usually the deeper the pattern, the greater the obscuration and diffusion. 2.3.2 Body tinted patter
45、ned glass Body tinted patterned glass is similar to clear patterned glass but with the whole of the glass tinted during manufacture. The tints are incorporated either to give solar control properties or for a decorative purpose. Thicknesses and tints available are dependent on the manufacturer. Maxi
46、mum sizes available may differ from those of clear patterned glass. 2.3.3 Availability of clear patterned glass Table 3 includes the range of nominal thicknesses, thickness tolerances, mass/unit area and maximum sizes normally available for clear patterned glass. Table 3 Availability of clear patter
47、ned glass (see 2.3.3) 2.4 Wired glass 2.4.1 General Wired glass has steel wire mesh completely embedded in it. Only one type of wire mesh is used and this is welded at all intersections, i.e. Georgian (12.5 mm square). Wired glass, like other annealed glass, is liable to crack when subjected to heav
48、y loading, impact or thermal shock. The embedded wire, however, holds the glass together and breaks only under a severe blow. Wired glass can provide a fire resistance of up to 2 h in an appropriate pane size and frame (see PD 6512). The process of manufacture may result in some of the meshes being
49、distorted. In considering the use of wired glass in situations demanding a good appearance it should be borne in mind that glass having a truly regular arrangement of wires may not always be obtainable. However, adjacent panels can be lined up one way, if required, by special selection. Nominal thicknessTolerance on thicknessApproximate mass/unit area Normal maximum size mmmmkg/m2mm 30.37.52 440 1 320 40.310.02 880 2 130 50.312.52 440 2 130 60.315.02 440 2 130 Nominal thicknessTolerance on thicknessApproximate mass
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