【BS英国标准】BS EN 572-3-2004 Glass in building - Basic soda lime silicate glass products - Polished wire glass.doc

国内外标准大全豆丁网国内外标准下载地址 /kmust1british standard bs en572-3:2004glass in building basic soda lime silicate glass products part 3: polished wire glassthe european standard en 572-3:2004 has the status of abritish standardics 81.040.20 bs en 572-3:2004national forewordthis british standard is the official english language version ofen 572-3:2004. it supersedes bs en 572-3:1995 which is withdrawn.the uk participation in its preparation was entrusted by technical committee b/520, glass and glazing in building, to subcommittee b/520/1, basic and transformed glass products, which has the responsibility to:aid enquirers to understand the text;present to the responsible international/european committee any enquiries on the interpretation, or proposals for change, and keep the uk interests informed;monitor related international and european developments and promulgate them in the uk.a list of organizations represented on this subcommittee can be obtained on request to its secretary.cross-referencesthe british standards which implement international or european publications referred to in this document may be found in the bsi catalogue under the section entitled “international standards correspondence index”, or by using the “search” facility of the bsi electronic catalogue or of british standards online.this publication does not purport to include all the necessary provisions of a contract. users are responsible for its correct application.compliance with a british standard does not of itself confer immunity from legal obligations.this british standard, was published under the authority of the standards policy and strategy committee on1 july 2004 bsi 1 july 2004isbn 0 580 44000 1summary of pagesthis document comprises a front cover, an inside front cover, the en title page, pages 2 to 10, an inside back cover and a back cover.the bsi copyright notice displayed in this document indicates when the document was last issued.amd. no.datecommentsamendments issued since publicationeuropean standard norme europenneeuropische normen 572-3june 2004ics 81.040.20supersedes en 572-3:1994english versionglass in building - basic soda lime silicate glass products - part3: polished wire glassverre dans la construction - produits de base : verre de silicate sodocalcique - partie 3: verre arm poliglas im bauwesen - basiserzeugnisse aus kalk- natronsilicatglas teil 3: poliertes drahtglasthis 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 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 central 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 the official versions.cen members are the national standards bodies of austria, 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.european committee for standardization c o m i t eur o p en de nor m a l i s a ti on eur o p i s c h es kom i tee f r nor m ung management centre: rue de stassart, 36 b-1050 brussels 2004 cenall rights of exploitation in any form and by any means reserved worldwide for cen national members.ref. no. en 572-3:2004: een 572-3:2004 (e)contentspageforeword. 31scope . 42normative references . 43terms and definitions . 44dimensional requirements. 54.1thickness . 54.1.1general. 54.1.2tolerances . 54.2length, width and squareness . 64.2.1general. 64.2.2tolerances . 64.3wire mesh . 65quality requirements . 65.1general. 65.2methods of observation and measurement . 75.2.1optical faults . 75.2.2visual faults . 75.3acceptance levels. 75.3.1optical faults . 75.3.2visual faults . 76designation . 9bibliography . 109forewordthis 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 shall 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 european commission and the europeanfree 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 572-1definitions and general physical and mechanical propertiesen 572-2float glassen 572-3polished wired glass en 572-4drawn sheet glass en 572-5patterned glassen 572-6wired patterned glassen 572-7wired or unwired channel shaped glassen 572-8supplied and final cut sizesen 572-9evaluation of conformity/product standardaccording to the cen/cenelec internal 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, netherlands, norway, poland, portugal, slovakia, slovenia, spain, sweden, switzerland and united kingdom.1scopethis part of this european standard specifies dimensional 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 information on polished wired glass in sizes other than those covered by this part.2normative referencesthis 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 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).en 572-1:2004, glass in building basic soda lime silicate glass products part 1: definitions and general physical and mechanical properties3terms and definitionsfor the purposes of this european standard, the terms and definitions given in en 572-1:2004 and the following apply.3.1length, h, and width, bdefined with reference to the direction of draw of the glass ribbon as shown in figure 1figure 1 relationship between length, width and direction of drawkey1direction of draw3.2stock sizesglass delivered in the following sizes: nominal length h: 1 650 mm to 3 820 mm nominal width b: 1 980 mm to 2 540 mm3.3optical faultsfaults, which lead to distortions in the appearance of objects observed through the glass3.4visual faultsfaults, which alter the visual quality of the glass. they include spot faults, linear/extended faults and wire faults3.5spherical or quasi-spherical spot faultsspot faults, whose larger dimension is less than or equal to twice the smaller dimension3.6elongated spot faultsspot faults, whose larger dimension is more than twice the smaller dimension3.7linear/extended faultsfaults, which can be on or in the glass, in the form of deposits, marks or scratches which occupy any extended length or area3.8wire faultsdeviation of the wire, penetration of the glass surface by the wire or break in the wire in the body of the glass3.9deviation of the wiredeviation, y, of the wire in relation to a reference, e.g. line or straight edge4dimensional requirements4.1thickness4.1.1generalthe actual thickness shall be the average of four measurements, taken to the nearest 0,01 mm, one taken at the centre of each side. measurement shall be by means of an instrument of the calliper micrometer type.4.1.2tolerancesthe 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 tolerancesnominal thickness(mm)limiting values(mm)minimummaximum66,07,4109,110,94.2length, width and squareness4.2.1generalthe nominal dimensions for length, h, and 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 parallel 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 squareness4.2.2tolerancesthe tolerances on nominal dimensions are 4 mm.4.3wire meshthis is a square steel mesh welded at all intersections of approximate dimensions 12,5 mm, manufactured from wire of diameter 0,42 mm.5quality requirements5.1generalone quality level is considered in this standard. this is determined by evaluation of the optical and visual faults. many spot faults are associated with the wire, due to the incorporation of the wire into the glass. spot faults canthus 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 considered, which may occur simultaneously. they are shown in figure 3 and are: out of square; waviness; bow.5.2methods of observation and measurement5.2.1optical faultsthe 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.5.2.2visual faultsspot faultsmeasure the dimensions 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.linear/extended faultsthe glass pane to be examined is illuminated in conditions approximating to 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 to the glass surface.view the pane of glass, and note the presence of visually disturbing faults.wire faultsa 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).any penetration of the glass surface by the wire is noted. any breaks in the wire are noted.5.3acceptance levels5.3.1optical faultsthe observer should not see any disturbing distortions within the glass pane.5.3.2visual faultsspot faultsa) spherical and quasi-spherical spot faults 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-spherical spot faults situated 2,0 mm from the wire.if the larger dimension is 1,0 mm, they are accepted without restriction.if the larger dimension is 1,0 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.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 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 dimension 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.linear/extended faultsthe allowable number of faults is an average of 0,05 faults in every 20 m2 of glass, related to at least 20 tonnes.wire faultsthe deviation, y, (see figure 3) shall not exceed 15 mm per metre.notethe 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 squarewavinessbownotethe scale of these drawings is exaggerated to be explicit.figure 3 representations of the types of wire deviations6designationpolished wire glass in compliance with this standard shall be designated respectively by: type; nominal thickness in mm; nominal length, h, and width, b, in mm; reference to this part of this standard.examplepolished wired glass, intended for use in buildings, thickness 6 mm, length 3,30 m, width 1,98 m is desi