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1、BRITISH STANDARD BS EN 494:2004 +A3:2007 Fibre-cement profiled sheets and fittings Product specification and test methods The European Standard EN 494:2004, incorporating amendments A1:2005, A2:2006 and A3:2007, has the status of a British Standard ICS 91.100.40 ? Licensed Copy: London South Bank Un
2、iversity, London South Bank University, Sat Sep 01 03:23:43 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 494:2004+A3:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 9 December 2004 BSI 2007 ISBN 978 0 580 59708 4 National foreword Th
3、is British Standard is the UK implementation of EN 494:2004+A3:2007, incorporating amendments A1:2005; A2:2006 and A3:2007. It supersedes BS EN 494:1994, which is withdrawn. The start and finish of text introduced or altered by CEN amendment is indicated in the text by tags !“. Tags indicating chang
4、es to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by !“. The UK participation in its preparation was entrusted by Technical Committee B/542, Roofing and cladding products for discontinuous laying, to Subcommittee B/542/4, Fibre reinforce
5、d cement sheeting for roofing. A list of organizations represented on this subcommittee can be obtained on request to its secretary. 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 S
6、tandard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments 1605114 February 2006See national foreword 1672631 October 2006See national foreword 1730031 August 2007Implementation of CEN amendment A3:2007 Licensed Copy: London South Bank University
7、, London South Bank University, Sat Sep 01 03:23:43 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 494:2004+A3 March 2007 ICS 91.100.40 Supersedes EN 494:2004 English Version Fibre-cement profiled sheets and fittings - Product specification and test m
8、ethods Plaques profiles en fibres-ciment et accessoires - Spcifications du produit et mthodes dessai Faserzement-Wellplatten und dazugehrige Formteile - Produktspezifikation und Prfverfahren This European Standard was approved by CEN on 3 March 2004 and includes Amendment 1 approved by CEN on 20 Jul
9、y 2005, Amendment 2 approved by CEN on 14 August 2006 and Amendment 3 approved by CEN on 8 February 2007. 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 alteratio
10、n. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN 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 translat
11、ion under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany,
12、Greece, Hungary, Iceland, Ireland, Italy, 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 Mana
13、gement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 494:2004+A3:2007: E Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:23:43 GMT+00:00 20
14、07, Uncontrolled Copy, (c) BSI EN 494:2004+A3:2007 (E) 2 Contents Page Foreword4 1 Scope 5 2 Normative references5 3 Terms and definitions .6 4 Symbols and abbreviations7 5 Product requirements .8 5.1 General8 5.1.1 Composition.8 5.1.2 Appearance and finish 8 5.2 Dimensions and tolerance9 5.2.1 Gene
15、ral9 5.2.2 Categorization by height of profile 9 5.2.3 Thickness .9 5.2.4 Tolerances on nominal dimensions.10 5.3 Physical requirements and characteristics for fibre-cement profiled sheets.11 5.3.1 General11 5.3.2 Apparent density11 5.3.3 Mechanical characteristics.11 5.3.4 Water impermeability 13 5
16、.4 Durability requirements 13 5.4.1 General13 5.4.2 Freeze-thaw 13 5.4.3 Heat-rain .13 5.4.4 Warm water.14 5.4.5 Soak-dry14 5.5 Summary of characteristics and classification 14 5.5.1 Summary of characteristics14 5.5.2 Classification14 5.6 Fire and safety15 5.6.1 External fire performance .15 5.6.2 R
17、eaction to fire.15 5.6.3 Release of dangerous substances.15 5.7 Product information.15 6 Evaluation of conformity.16 6.1 General16 6.2 Type testing16 6.2.1 General16 6.2.2 Initial type testing 16 6.2.3 Further type testing.17 6.3 Factory Production Control (FPC) .17 6.3.1 General17 6.3.2 Acceptance
18、tests .18 6.3.3 Equipment 19 6.3.4 Raw materials and components.19 6.3.5 Product testing and evaluation19 6.3.6 Non-conforming products 19 6.4 Inspection of a consignment of finished products19 7 Test methods20 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:
19、23:43 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 494:2004+A3:2007 (E) 3 7.1 General .20 7.2 Dimensional tests20 7.2.1 Dimensional tests for sheets20 7.2.2 Dimensional tests for fittings.23 7.3 Tests for physical performance and characteristics.23 7.3.1 Apparent density.23 7.3.2 Mechanical charact
20、eristics.24 7.3.3 Water impermeability27 7.3.4 Warm water 28 7.3.5 Soak-dry .29 7.4 Tests for climatic performance30 7.4.1 Freeze-thaw30 7.4.2 Heat-rain.32 7.4.3 Freeze-thaw test for fittings33 7.5 Test for fire performance33 7.5.1 Test for external fire performance.33 7.5.2 Test for reaction to fir
21、e .34 8 Marking, labelling and packaging40 Annex A (normative) Figures.41 Annex B (normative) Consignment inspection sampling.52 Annex C (normative) Statistical method for determining the corresponding wet values or revised dry specifications for the breaking load and/or bending moment when carrying
22、 out the dry method of test for quality control purposes53 C.1 Procedure.53 C.2 Determination of the correlation between the results of testing wet and dry specimens.53 C.3 Determination of the regression line.54 C.4 Determination of a value for wet testing from an obtained value for dry testing.54
23、C.5 Determination of the minimum value specified for dry testing xstd corresponding to the minimum value specified for wet testing in this document ystd55 Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU Construction Products Directive .58 ZA.1 Scope and r
24、elevant characteristics.58 ZA.2 Procedure for the attestation of conformity of fibre cement profiled sheets and fittings.60 ZA.2.1 Systems of attestation of conformity60 ZA.2.2 EC Declaration of conformity.62 ZA.3 CE marking.63 Bibliography66 Licensed Copy: London South Bank University, London South
25、 Bank University, Sat Sep 01 03:23:43 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 494:2004+A3:2007 (E) 4 Foreword This document (EN 494:2004+A3:2007) has been prepared by Technical Committee CEN/TC 128 “Roof covering products for discontinuous laying and products for wall cladding”, the secretaria
26、t of which is held by IBN/BIN. 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 September 2007, and conflicting national standards shall be withdrawn at the latest by September 2007. This document
27、includes Amendment 1, approved by CEN on 2005-07-20, Amendment 2, approved by CEN on 2006-08-14 and Amendment 3, approved by CEN on 2007-02-08. This document supersedes %EN 494:2004 continuous strands or tapes; nets or webs. Process aids, fillers and pigments which are compatible with the composite
28、may be added. 5.1.2 Appearance and finish The sheets may be left with their natural colour, or colouring matters may be added in the composition; they may also receive adherent coloured or uncoloured coatings on their surface. Variations of the surface appearance which do not impair the characterist
29、ics of the sheets as defined in this document are permitted. On exposure, the surface and/or its coating will be affected by weathering which may vary with site, location, aspect, pitch of roof and duration of exposure. Any deterioration in this respect shall not detract from the minimum mechanical
30、and physical characteristics as specified in this document or from the function of the sheet as a durable element. Edges shall be straight and clean. Sheets may have mitred or pre-mitred corner(s) and/or may be predrilled for fixing. The fittings shall have a general appearance and finish compatible
31、 with the sheets with which they are to be used. They may be supplied with holes for fixing. Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:23:43 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 494:2004+A3:2007 (E) 9 5.2 Dimensions and tolerance 5.2.1 General
32、The manufacturer shall specify the nominal dimensions. NOTE See 5.7 for designation and information. Fittings shall have nominal dimensions and shapes determined by the manufacturer and appropriate to the corresponding corrugated section sheets. 5.2.2 Categorization by height of profile The sheets a
33、re divided into five categories, depending on the nominal height of the corrugations, according to Table 1 (examples of profiles are shown in Figures A.1 to A.7). Table 1 Categorization by height of profile Category h (mm) A 15 to 30 B 25 to 45 C 40 to 80 D 60 to 120 E 90 to 150 5.2.3 Thickness The
34、thickness of the sheets shall either: be approximately constant across the width of the profile, as shown in Figure A.8a or vary regularly from the crowns and valleys to the flanks of the corrugations, as shown in Figure A.8b. When measured in accordance with 7.2.1.3 the minimum individual thickness
35、 for each category shall be as specified in Table 2. Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:23:43 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 494:2004+A3:2007 (E) 10 Table 2 Minimum individual thickness Minimum individual thickness (mm) Category h
36、(mm) Length 0,9 m Length 0,9 m A 15 to 30 4,0 3,5 B 25 to 45 5,0 4,0 C 40 to 80 5,2 4,0 D 60 to 120 5,5 5,0 E 90 to 150 6,0 - NOTE A special Class Z is allowed in Category A with a minimum individual thickness of 3,5 mm. 5.2.4 Tolerances on nominal dimensions 5.2.4.1 Profiled sheets When measured in
37、 accordance with 7.2 the allowable dimensional variations shall be as follows: a) on the pitch a: a Tolerances a 75 mm 1,5 mm 75 mm 0,9 m Category h (mm) Class 1 (N/m) Class 2 (N/m) A 15 to 30 1400 1250 B 25 to 45 2 500 2 000 C 40 to 80 4 250 3 500 D 60 to 120 7 000 5 500 E 90 to 150 12 500 8 500 NO
38、TE 1 A special Class 3 is allowed in Category A with a minimum breaking load of 750 N/m. NOTE 2 A special Class 3 with a minimum breaking load per metre with of 2 200 N/m is allowed in Category C for sheets of length greater than 0,9 m and less than 1,25 m. 5.3.3.2 Deflection When tested in accordan
39、ce with 7.3.2.1, the increase in deflection of sheets of length greater than 0,90 m measured between applying 20% and 70% of the minimum load specified for their class (see Figure A.24) shall not exceed: f 0,7 x 10-3 x ls2/h where: f is the increase in deflection, in millimetres; ls is the clear spa
40、n, in millimetres; h is the nominal height of corrugation, in millimetres. 5.3.3.3 Bending moment When tested in accordance with 7.3.2.2, the minimum bending moment per metre length at rupture of the sheets shall be as specified in Table 4. 5.3.3.4 %Impact resistance Where required, impact resistanc
41、e shall be determined in accordance with EN 15057. name of the profile; class; category; size. The manufacturer shall include the following in his literature: a) designation of the sheet as above; b) shape of the profile; c) number of complete corrugations; d) nominal values for Licensed Copy: Londo
42、n South Bank University, London South Bank University, Sat Sep 01 03:23:43 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 494:2004+A3:2007 (E) 16 pitch, height of corrugations, thickness, height of edges, where applicable, length, width; e) minimum apparent density; f) information relevant to the han
43、dling and installation. 6 Evaluation of conformity 6.1 General The conformity of products with the requirements of this document shall be demonstrated by: initial type testing; and factory production control by the manufacturer. 6.2 Type testing 6.2.1 General Type tests shall be carried out on produ
44、cts as delivered. If several formats or sizes of the same nominal thickness are being produced from the same composition and by the same production method, type tests only need to be carried out on one size of each nominal thickness. All characteristics listed in Table 6 shall be subject to initial
45、type testing, except reaction to fire Class A1 without testing and external fire performance “deemed to satisfy” products. Testing of mechanical characteristics is normally carried out with the upper face in compression. If required to establish a relationship between upper and under face testing, w
46、here significant differences are expected or if required for design purposes, the load shall be applied on the under face. Results obtained for under face testing are not relevant for classification. 6.2.2 Initial type testing Initial type testing shall be performed to demonstrate conformity to this
47、 document. Tests previously performed in accordance with the provisions of this document (same product, same characteristic(s), test method, sampling procedure, same attestation of conformity, etc.) may be taken into account. In addition initial type testing shall be performed for the approval of a
48、new product, or a fundamental change in formulation or method of manufacture, the effects of which cannot be predicted on the basis of previous experience. The results of all type tests shall be recorded and held by the manufacturer for at least 5 years. Licensed Copy: London South Bank University,
49、London South Bank University, Sat Sep 01 03:23:43 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 494:2004+A3:2007 (E) 17 6.2.3 Further type testing Whenever a change occurs in the fibre-cement sheet design, the raw material or supplier of components, or the production process, which would change significantly one or more of the characteristics, the type test shall be performed for the appropriate characteristic(s). Table 6 Number of sheets and fittings and
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