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1、BRITISH STANDARD BS EN 12446:2003 Chimneys Components Concrete outer wall elements The European Standard EN 12446:2003 has the status of a British Standard ICS 91.060.40 ? Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:46:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 12446:2003 This
2、 British Standard was published under the authority of the Standards Policy and Strategy Committee on 24 April 2003 BSI 24 April 2003 ISBN 0 580 41624 0 National foreword This British Standard is the official English language version of EN 12446:2003. The UK participation in its preparation was entr
3、usted by Technical Committee B/506, Chimneys, to Subcommittee B/506/4, Chimneys and their components having inner linings of concrete which has the responsibility to: EN 12446 is a candidate harmonized European Standard and fully takes into account the requirements of the European Commission mandate
4、 M 105 “Chimneys”, given under the EU Construction Products Directive (89/106/EEC), and intended to lead to CE marking. The date of applicability of EN 12446 as a harmonized European Standard, i.e. the date after which this standard may be used for CE marking purposes, is subject to an announcement
5、in the Official Journal of the European Communities. The Commission in consultation with Member States have agreed a transition period for the co-existence of harmonized European Standards and their corresponding national standard(s). It is intended that this period will comprise a period, usually n
6、ine months after the date of availability of the European Standard, during which any required changes to national regulations are to be made, followed by a further period, usually of 12 months, for the implementation of CE marking. At the end of this co-existence period, the national standard(s) wil
7、l be withdrawn. EN 12446 is the subject of transitional arrangements agreed under the Commission mandate. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publication
8、s 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
9、 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. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpret
10、ation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 28, an inside back cover and a back
11、cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:46:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE
12、 EUROPISCHE NORM EN 12446 April 2003 ICS 91.060.40 English version Chimneys - Components - Concrete outer wall elements Conduits de fume - Composants - Enveloppes externes en bton Abgasanlagen - Bauteile - Auenschalen aus Beton This European Standard was approved by CEN on 2 January 2003. CEN member
13、s 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
14、 to the Management Centre 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 Management Centre has the same st
15、atus as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EU
16、ROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2003 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12446:2003 E Licensed Cop
17、y: sheffieldun sheffieldun, na, Sat Oct 28 09:46:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12446:2003 (E) 2 Contents page Foreword. 4 1Scope 5 2Normative references . 5 3Terms and definitions. 5 4Materials and designation of outer wall elements. 7 4.1Materials. 7 4.2Designations and classes 7
18、 5Reinforcement. 7 6Surface treatment 8 7Form, dimensions and tolerances. 8 7.1Form . 8 7.2Dimensions 8 7.3Tolerances . 8 7.4Squareness of ends 8 8Performance 9 8.1Heat stress resistance 9 8.2Heat shock resistance 9 8.3Thermal resistance . 10 8.4Compressive strength 10 8.5Bulk density. 11 8.6Freeze-
19、thaw resistance. 11 8.7Flexural strength under wind loading. 11 9Designation 11 9.1General. 11 9.2Temperature classes 12 9.3Resistance to fire classes 12 10Marking. 12 11Product information 12 12Evaluation of conformity 13 12.1Initial type testing 13 12.2Further type tests 13 12.3Factory production
20、control 13 Annex A (normative) Test methods 14 A.1Heat stress resistance and heat shock test. 14 A.1.1Apparatus. 14 A.1.2Test assembly 15 A.1.3Test environment and conditioning 15 A.1.4Procedure. 16 Annex B (normative) Requirements of sampling plan according to ISO 2859-1 at an Acceptable Quality Le
21、vel (AQL) and inspection level S2 Inspection Procedure. 19 B.1Acceptability determination. 19 B.1.1Single sampling. 19 B.1.2Double sampling . 19 B.2Normal inspection. 19 B.3Normal 21 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:46:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12446:2
22、003 (E) 3 B.4Reduced to normal inspection .22 B.5Tightened inspection.22 B.6Tightened to normal inspection .22 B.7Discontinuation of inspection 22 Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU Construction Products Directives23 Bibliography 28 Licensed
23、Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:46:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12446:2003 (E) 4 Foreword This document (EN 12446:2003) has been prepared by Technical Committee CEN/TC 166 “Chimneys“, the secretariat of which is held by UNI. This European Standard shall be given
24、the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2003, and conflicting national standards shall be withdrawn at the latest by January 2005. This document has been prepared under a mandate given to CEN by the European Commission
25、 and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document. This standard is one of a series of co-ordinated standards dealing with specification, design
26、, testing and installation of chimneys, both single and multi wall. The co-ordinated package of standards is further divided by material of construction and this European Standard is one of a series of specifications and execution documents dealing with design and installation of concrete chimney pr
27、oducts and systems. The standards in this series for concrete chimney products and systems are: EN 1857:Chimneys - Components - Concrete flue liners EN 1858:Chimneys - Components - Concrete flue blocks EN 12446:Chimneys - Components - Concrete outer wall elements No existing European Standard is sup
28、erseded by the publication of this standard. Annexes A and B are normative. This document contains a bibliography. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech
29、 Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovak Republic, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:46:53 GMT+00:00 2006, Uncontrolled C
30、opy, (c) BSI EN 12446:2003 (E) 5 1 Scope This European Standard specifies the material, dimensional and performance requirements for factory made concrete outer wall elements for chimneys including fittings. The standard covers elements having up to four passages designated to accommodate a combinat
31、ion of flue liners and or air ducts. This European Standard also relates to storey-height and reinforced outer wall elements. NOTE 1Classes in this standard are not derived from conditions referred to in article 3.2 of Directive 89/106/EC and should only be considered as technical classes in the sen
32、se of Commission Guidance Paper E “Levels and classes in the Construction Products Directive”. NOTE 2Any reference to the term outer wall element implies both the outer wall elements and their fittings, except where otherwise indicated. 2 Normative references This European Standard incorporates by d
33、ated or undated reference, 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 Standa
34、rd only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 206-1:2000, Concrete Part 1: Specification, performance, production and conformity. prEN 14297, Chimneys - Freeze-thaw resistance test
35、 method EN 1443:1999, Chimneys General requirements. EN 1857:2003, Chimneys Components Concrete flue liners. EN 1858:2003, Chimneys Components Concrete flue blocks. EN 10088-2, Stainless steel Part 2: Technical delivery conditions for sheet/plate and strip for general purposes. EN 10218-2, Steel wir
36、e and wire products General Part 2: Wire dimensions and tolerances. ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection. 3 Terms and definitions For the purposes of this European Standard the terms
37、and definitions given in EN 1443:1999 apply, as well as the following: 3.1 chimney fitting chimney component, except a chimney section, conveying products of combustion 3.2 concrete material formed by mixing cement, aggregate and water and with or without the incorporation of admixtures, additions,
38、glass fibres or steel fibres which develops its properties by hydration of the cement EN 206-1:2000 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:46:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12446:2003 (E) 6 3.3 outer wall element chimney component that surrounds a flue liner to f
39、orm the outer wall of a chimney 3.4 hollow wall outer wall element outer wall element having vertical cavities; cavities can pass through both ends 3.5 manufacturers declared internal transverse dimensions internal dimensions of the outer wall element measured perpendicular to the longitudinal axis
40、3.6 manufacturers declared length internal length of the outer wall element. Examples of measurement are shown in Figure 1 3.7 manufacturers declared structural height maximum safe constructional height of the outer wall elements as declared by the manufacturer 3.8 manufacturers declared overall wal
41、l thickness dimensions at its thinnest point, between the inside face and the outside face of the outer wall element, not measured at any joint feature, e.g. spigot/socket end 3.9 reinforced outer wall element outer wall element having steel reinforcement to assist handling 3.10 solid wall outer wal
42、l element outer wall element without cavities in the thickness of its walls 3.11 straight outer wall element outer wall element having the ends perpendicular to the axis of the flue 3.12 storey-height outer wall element factory made outer wall element having an overall length relating to the floor t
43、o floor height of a building 3.13 pre-cast concrete concrete that is cast and cured in a place other than its final location of use 3.14 resistance to fire of outer wall elements ability of the outer wall elements and fittings to be resistant to soot fire Licensed Copy: sheffieldun sheffieldun, na,
44、Sat Oct 28 09:46:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12446:2003 (E) 7 Key LInternal length Figure 1 Internal length 4 Materials and designation of outer wall elements 4.1Materials Outer wall elements shall be pre-cast concrete. Materials shall be identified for factory production contro
45、l purposes. NOTE 1Additions can include glass or steel fibres. NOTE 2Attention is drawn to Commission decision 96/603/EC, as amended, in which non-combustible masonry units containing not more than 1 % by mass or volume (whichever is the more onerous) of homogeneously distributed organic materials a
46、re classified as reaction to fire class A1 without testing. 4.2Designations and classes Outer wall elements shall be designated according to their intended nominal working temperature and their resistance to sootfire, as in clause 9. Designation classes for outer wall elements for temperature and re
47、sistance to fire shall be according to clause 9. 5 Reinforcement 5.1 Where an outer wall element is reinforced the reinforcement shall have a maximum diameter of 8 mm and a minimum concrete cover of 20 mm on all sides. 5.2 In outer wall elements having a bulk density of less than 2 000 kg/m3, when m
48、easured according to A.10 of EN 1857:2003, any reinforcement shall be protected against corrosion by one of the following means : a) use of stainless steel according to EN 10088-2; Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:46:53 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12446:200
49、3 (E) 8 b) by completely covering any mild steel reinforcement according to EN 10218-2 with a coating (e.g. Portland cement CEM 1 or CEM 2 mixed with water to form a slurry, or epoxy resin). 6 Surface treatment 6.1 Any surface treatment of the outer wall element, e.g. coatings, shall be factory applied prior to testing. 6.2 Any external surface treatment of the outer wall element, e.g. render, shall be applied as described by the product manufacturer, prior to testing. 7 Form
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