1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 490:2011Concrete roofing tiles andfittings for roof coveringand wall cladding ProductspecificationsBS EN 490:2011 BRITISH STANDARDNational forewordThis British Standard is
2、the UK implementation of EN 490:2011. Itsupersedes BS EN 490:2004+A1:2006 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/542/2, Concrete roofing tiles and fittings.A list of organizations represented on this committee can beobtained on request to its
3、 secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012ISBN 978 0 580 73802 9ICS 91.100.30Compliance with a British Standard cannot confer immunity fromlegal obligation
4、s.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2012.Amendments issued since publicationDate Text affectedBS EN 490:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 490 October 2011 ICS 91.100.30 Supersedes EN 490:2004Engl
5、ish Version Concrete roofing tiles and fittings for roof covering and wall cladding - Product specifications Tuiles et accessoires en bton pour couverture et bardage -Spcifications des produits Dach- und Formsteine aus Beton fr Dcher und Wandbekleidungen - Produktanforderungen This European Standard
6、 was approved by CEN on 18 September 2011. 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 s
7、uch national standards may be obtained on application to the CEN-CENELEC 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 o
8、wn language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Ita
9、ly, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-100
10、0 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 490:2011: EBS EN 490:2011EN 490:2011 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Symbols and abbreviations 55 Requiremen
11、ts .66 Evaluation of conformity 107 Sampling 118 Designation system 139 Marking and labelling . 1410 Documents 14Annex A (informative) Surface characteristics 15Annex B (informative) Performance of assemblies of roofing tiles and fittings 16Annex C (normative) Fasteners and fixings 17Annex D (normat
12、ive) Sampling procedure . 18Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU Construction Products Directive . 19Bibliography . 27BS EN 490:2011EN 490:2011 (E) 3 Foreword This document (EN 490:2011) has been prepared by Technical Committee CEN/TC 128 “Roof
13、 covering products for discontinuous laying and products for wall cladding”, the secretariat of which is held by NBN. 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 April 2012, and conflicting na
14、tional standards shall be withdrawn at the latest by July 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersed
15、es EN 490:2004. 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). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
16、document. This edition incorporates minor technical changes including reaction to fire requirements. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
17、Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 490:2011EN 490:2011 (E) 4 1
18、 Scope This European Standard specifies requirements for concrete roofing tiles and fittings for pitched roof coverings and wall cladding and lining. Concrete roofing tiles and fittings may incorporate surface coatings and glued concrete components. NOTE 1 Information on surface characteristics is g
19、iven in Annex A. NOTE 2 Information on the performance of roof and wall assemblies is given in Annex B. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the
20、latest edition of the referenced document (including any amendments) applies. EN 491:2011, Concrete roofing tiles and fittings for roof covering and wall cladding Test methods ENV 1187, Test methods for external fire exposure to roofs EN 13238, Reaction to fire tests for building products Conditioni
21、ng procedures and general rules for selection of substrates EN 13823, Reaction to fire tests for building products Building products excluding floorings exposed to the thermal attack by a single burning item EN 13501-1, Fire classification of construction products and building elements Part 1: Class
22、ification using data from reaction to fire tests EN 13501-5, Fire classification of construction products and building elements Part 5: Classification using data from external fire exposure to roof tests EN ISO 1716, Reaction to fire tests for products Determination of the gross heat of combustion (
23、calorific value) (ISO 1716:2010) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 aggregate concrete component consisting of uncrushed and/or crushed natural and/or artificial mineral substances with particle sizes and shapes suitable for the
24、production of concrete 3.2 additive finely divided material that may be added to concrete in order to improve certain properties or to achieve special properties 3.3 pigment additive intended to add colour to the concrete BS EN 490:2011EN 490:2011 (E) 5 3.4 admixture material which is added in small
25、 quantities relative to the mass of the cement before or during mixing or during an additional mixing operation, causing required modifications to the properties 3.5 cement hydraulic binder, i.e. finely ground inorganic material, which, when mixed with water, forms a paste which sets by means of hyd
26、ration reactions and processes and which, after hardening, retains its strength and stability 3.6 fitting component, of concrete, that is complementary to the tiles and has a special function NOTE Fittings may contain inserts of other materials. 3.6.1 coordinated fitting fitting that is intended to
27、align or interlock with the tiles with which it is to be laid (e.g. interlocking verge tile, interlocking ventilation tile, tile-and-a-half, aligning valley tile, interlocking or aligning angle tiles) 3.7 valley tile fitting for use at a meeting of two roof pitches forming a re-entrant angle 3.8 int
28、erlocking tile profiled or flat tile which has a side lock, with or without a head lock feature 3.9 non-interlocking tile profiled or flat tile without interlocks 3.10 tile with a regular front edge tile (interlocking or non-interlocking) which, by design, has a constant or regularly varying hanging
29、 length across the width 3.11 tile with an irregular front edge tile (interlocking or non-interlocking), which, by design, has an irregular varying hanging length across the width 4 Symbols and abbreviations For the purposes of this document, the following symbols and abbreviations apply. l1hanging
30、length of a tile l2, l3hanging edge length of a tile, as defined in EN 491:2011, Clause 4 cwcover width of one tile cwccover width closed up value of 10 tiles cwdcover width drawn out value of 10 tiles d profile depth of a tile Fminminimum transverse strength of all tiles Fitransverse strength of an
31、 individual tile IL interlocking NL non-interlocking BS EN 490:2011EN 490:2011 (E) 6 RF regular front edge IF irregular front edge / not applicable or not declared characteristic for designation system 5 Requirements 5.1 Materials The concrete used in the manufacture of tiles and fittings shall be f
32、ormed by mixing cement, aggregate and water and produced by the hardening of the cement paste (cement and water). NOTE In addition to the basic components, the concrete may also contain pigments, admixtures and/or additives. 5.2 Dimensions 5.2.1 Hanging length and squareness The tile hanging length
33、shall be declared in the manufacturers technical specification. For tiles with a regular front edge, the values of l1shall be 4 mm of the manufacturers declared value when tested in accordance with EN 491:2011, 5.2. The squareness for tiles with nominally constant hanging length, when tested in acco
34、rdance with EN 491:2011, 5.2.2.1, shall be calculated as the difference between values l2and l3and shall be not greater than 4 mm. This sub-clause does not apply for tiles that are designed, for example for aesthetic reasons, with an irregular front edge. 5.2.2 Cover width 5.2.2.1 General The tile c
35、over width cwshall be declared in the manufacturers technical specification. NOTE The cover width shunts may also be declared in the manufacturers technical specification. This sub-clause does not apply for tiles that are designed, for example for aesthetic reasons, with a randomly varying cover wid
36、th. 5.2.2.2 Interlocking tiles When tiles with cover width shunts declared by the manufacturer are tested in accordance with EN 491:2011, 5.3.3.1, the cover width shall conform to the following: cwd/10 cw+ declared “plus cover width shunt”; cwc/10 cw- declared “minus cover width shunt”. When tiles w
37、ithout cover width shunts, and tiles with cover width shunt but not declared by the manufacturer, are tested in accordance with EN 491:2011, 5.3.3.1, the mean cover width shall be 5 mm of the manufacturers declared cover width. 5.2.2.3 Non-interlocking tiles When non-interlocking tiles are tested in
38、 accordance with EN 491:2011, 5.3.3.2, the mean cover width shall be 3 mm of the manufacturers declared value. BS EN 490:2011EN 490:2011 (E) 7 5.2.3 Flatness When tiles are tested in accordance with EN 491:2011, 5.4, the gap between any designed contact point and the flat surface shall not exceed 3
39、mm or cw/100 mm to the nearest millimetre, whichever is the greater. This sub-clause does not apply where the manufacturer declares that: tiles are designed to have less than four contact points to a flat surface, and/or tiles are designed to be irregular in flatness. 5.2.4 Fittings The manufacturer
40、 shall identify and declare the dimensions and tolerances and method of measurement of the fitting relevant to its use. Where relevant, the tile element of a coordinated fitting shall conform to 5.2.1, 5.2.2 and 5.2.3. 5.3 Mass The mass of tiles and fittings shall be declared in the manufacturers te
41、chnical specification. When tiles are tested in accordance with EN 491:2011, 5.5, the mean mass shall be: a) manufacturers declared mass 0,2 kg for tiles with a declared mass not greater than 2 kg; b) manufacturers declared mass 10 % for tiles with a declared mass greater than 2 kg. 5.4 Fixing holes
42、 (where provided) Fixing holes, where provided, shall be arranged so that an intended connection between the tiles and/or fittings and the batten can be achieved. NOTE Information on fasteners and fixings is given in Annex C. Details of the size and position of the fixing holes may be given in the m
43、anufacturers technical and/or commercial literature. 5.5 Mechanical resistance (transverse strength) When tiles are tested in accordance with EN 491:2011, 5.6: a) value of Fminshall be not less than the appropriate value given in Table 1, or b) number of individual tiles with transverse strength val
44、ues (Fi) less than the appropriate value in Table 1, shall be not more than the appropriate acceptance value in 7.3. Tiles tested prior to 28 days after manufacture shall be deemed to conform if they reach at least 80 % of the values specified in Table 1 and the manufacturer can demonstrate statisti
45、cally that the values given in Table 1 are achieved at 28 days. Fittings shall conform to 5.2.4 and 5.7.2 (and 5.7.3 in the case of valley tiles). BS EN 490:2011EN 490:2011 (E) 8 Table 1 Minimum transverse strength Fminof tiles Property Interlocking tiles Non-interlocking tiles Profiled Flat Profile
46、 depth d 20mm 20 mm d 5 mm d 2,0 MJ/kg and 4,0 MJ/m2, when tested according to EN ISO 1716, the complete coating system shall be tested according to EN 13823, and mounted on either the calcium silicate or fibre cement substrates given in EN 13238. If the coating system meets the requirements of Clas
47、s A2, the product shall also be classified Class A2 with appropriate smoke and droplets sub-classification; for any coating system other than those stated above, the coating shall be tested for the requirements of classes lower than A2 and the product shall be given the same class as the coating sys
48、tem; as an alternative to the above requirements, the coated product itself shall be tested and the classification requirements of EN 13501-1 shall apply. For tests to EN 13823, the product shall be mounted and fixed in a manner which is representative of its intended application (i.e. mounted on ti
49、mber battens with no underlying insulation or organic material) in accordance with EN 491. The requirements above relate to uncoated tiles or fittings which are Class A1. Where the uncoated tiles or fittings contain 1,0 % by weight or volume (whichever is the lower) of homogeneously distributed organic material and are not Class A1, coated products shall be classified in accordance with EN 13501-1. Results obtained for a coating system including an organic layer, appl
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