1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 15254-7:2012Extended application of resultsfrom fire resistance tests Non-loadbearing ceilingsPart 7: Metal sandwich panel constructionBS EN 15254-7:2012 BRITISH STANDARDNa
2、tional forewordThis British Standard is the UK implementation of EN 15254-7:2012.The UK participation in its preparation was entrusted to TechnicalCommittee FSH/22/-/7, Non loadbearing separating elements.A list of organizations represented on this committee can beobtained on request to its secretar
3、y.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 76405 9ICS 13.220.50; 91.060.30Compliance with a British Standard c
4、annot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 August 2012.Amendments issued since publicationDate Text affectedBS EN 15254-7:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15254-7 June
5、 2012 ICS 13.220.50; 91.060.30 English Version Extended application of results from fire resistance tests - Non-loadbearing ceilings - Part 7: Metal sandwich panel constructionApplication tendue des rsultats dessais de rsistance au feu - Plafonds non porteurs - Partie 7: Panneaux sandwiches mtalliqu
6、es pour la construction Erweiterter Anwendungsbereich der Ergebnisse von Feuerwiderstandsprfungen - Nichttragende Unterdecken -Teil 7: Sandwichelemente in Metallbauweise This European Standard was approved by CEN on 4 May 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulation
7、s 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 CEN-CENELEC Management Centre or to any CEN member. Th
8、is 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN mem
9、bers are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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
10、, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nati
11、onal Members. Ref. No. EN 15254-7:2012: EBS EN 15254-7:2012EN 15254-7:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms, definitions, symbols and abbreviations .43.1 Terms and definitions .43.2 Symbols and abbreviations 54 Establishing the field of extended application .64.
12、1 General 64.2 Assumptions in the extended application 64.3 Assumed structural behaviour of a sandwich panel in fire 75 Rules for extended applications of the tested product .75.1 General 75.2 Variations in the materials of the product .85.2.1 General 85.2.2 Variations in the metal sheets 85.2.3 Var
13、iations in the adhesive 95.2.4 Variations in the core material 105.3 Variations in the construction . 115.3.1 Variations in span length . 115.3.2 Variations in the panel thickness 115.3.3 Variations in the joint construction 125.3.4 Variations in the boundary conditions and fixing system . 125.3.5 L
14、ength and width of ceiling construction 125.4 Interaction between the factor influences 125.5 Support structure 135.6 Heating conditions 136 Small scale tests and calculation methods . 136.1 Small scale tests . 136.2 Calculation methods 146.2.1 General . 146.2.2 Calculation of strength properties 14
15、6.3 Additional measurements to be carried out in the reference test . 147 Report of the extended application analysis . 14Annex A (informative) Typical behaviour of a sandwich panel ceiling when exposed to fire . 16Annex B (normative) Typical examples of sandwich panel ceiling end fixings to support
16、 structure . 18Annex C (normative) Rules and calculation methods for extending the span length of sandwich panel ceilings 19 Bibliography . 22BS EN 15254-7:2012EN 15254-7:2012 (E) 3 Foreword This document (EN 15254-7:2012) has been prepared by Technical Committee CEN/TC 127 “Fire safety in buildings
17、”, the secretariat of which is held by BSI. 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 2012, and conflicting national standards shall be withdrawn at the latest by December 2012. Att
18、ention 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 has been prepared under a mandate given to CEN by the European Commission a
19、nd the European Free Trade Association. EN 15254 is divided into the following parts: EN 15254-2, Extended application of results from fire resistance tests Non-loadbearing walls Part 2: Masonry and Gypsum Blocks EN 15254-4, Extended application of results from fire resistance tests Non-loadbearing
20、walls Part 4: Glazed constructions EN 15254-5, Extended application of results from fire resistance tests Non-loadbearing walls Part 5: Metal sandwich panel construction prEN 15254-6, Extended application of results from fire resistance tests Non-loadbearing walls Part 6: Curtain walling EN 15254-7,
21、 Extended application of results from fire resistance tests Non-loadbearing ceilings Part 7: Metal sandwich panel construction, the present document According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European
22、 Standard: Austria, Belgium, Bulgaria, Croatia, 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, Turkey a
23、nd the United Kingdom. BS EN 15254-7:2012EN 15254-7:2012 (E) 4 1 Scope This European Standard defines rules for extended applications, provides guidance, and, where appropriate, specifies procedures, for variations of certain parameters and factors associated with the design of internal non-loadbear
24、ing ceilings constructed of metal sandwich panels that have been tested in accordance with EN 1364-2. This European Standard applies to self-supporting, double skin metal faced sandwich panels which have an insulating core bonded to both facings. 2 Normative references The following documents, in wh
25、ole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1363-1:2012, Fire resistance tests
26、 Part 1: General requirements EN 1363-2, Fire resistance tests Part 2: Alternative and additional procedures EN 1364-2:1999, Fire resistance tests for non-loadbearing elements Part 2: Ceilings EN 1993-1-2, Eurocode 3. Design of steel structures Part 1-2: General rules Structural fire design EN 13501
27、-2, Fire classification of construction products and building elements Part 2: Classification using data from fire resistance tests, excluding ventilation services EN 14509:2006, Self-supporting double skin metal faced insulating panels Factory made products Specifications 3 Terms, definitions, symb
28、ols and abbreviations 3.1 Terms and definitions For the purpose of this document, the terms and definitions given in EN 14509:2006, EN 1364-2:1999, EN 1363-1:2012 and the following apply. 3.1.1 direct field of application of test results outcome of a process (involving the application of defined rul
29、es) whereby a test result is deemed to be equally valid for variations in one or more of the product properties and/or intended end use applications 3.1.2 extended field of application of test results outcome of a process (involving the application of defined rules that may incorporate calculation p
30、rocedures) that predicts, for a variation of a product property and/or its intended end use application(s), a test result on the basis of one or more test results to the same test standard 3.1.3 factor one of the possible variations that may be applied to a parameter BS EN 15254-7:2012EN 15254-7:201
31、2 (E) 5 3.1.4 factor influence one of the potential causes of a change in the fire resistance due to a factor 3.1.5 fastening, fixing device that fastens the panels to a support structure or to the test frame 3.1.6 fixing system system consisting of fastenings and other possible means used to fasten
32、 the panels to a support structure or to the test frame 3.1.7 length of assembly length of the ceiling in the span (or panel length) direction in the reference test or in the end use application 3.1.8 width of assembly width of the ceiling in the cross direction of the span (or panel length) in the
33、reference test or in the end use application 3.1.9 reference test fire resistance test on which the extended application is based and the results of which are used as the main source of data for the extended application Note 1 to entry: The fire resistance test is in accordance with EN 1363-1 and EN
34、 1364-2 and where applicable EN 1363-2. 3.1.10 stiching device for fixing panels to panels in the longitudinal joint 3.1.11 span length center to center distance between two consecutive supports to which the sandwich panel is fixed 3.1.12 support structure construction onto which the panel ceiling i
35、s fastened in the end use application 3.1.13 test frame frame containing the test construction for the purpose of mounting onto the furnace 3.2 Symbols and abbreviations For the purposes of this document, the following symbols and abbreviations apply. FEdcatenary force acting on the fasteners Fvvert
36、ical force due at g acting at the fastener FEd1catenary force acting at the fastener at maximum temperature in the test FEd2catenary force acting at the fastener at temperature for the increased span Fv1vertical force due at g acting at the fastener at maximum temperature in the test BS EN 15254-7:2
37、012EN 15254-7:2012 (E) 6 Fv2vertical force due at g acting at the fastener at temperature for the increased span L span length T temperature b width of panel g panel weight per square meter n number of fasteners p relative end movement in the fastener w deflection of the ceiling linear coefficient o
38、f thermal expansion 4 Establishing the field of extended application 4.1 General An extended application analysis is required when the application differs in one or more parameters from the one tested and described in the test report and/or in the classification document, and which is not covered by
39、 the field of direct application of the classification document. The extended application of the sandwich panels used as a non-loadbearing ceiling shall be based on the reference fire test results performed according to EN 1364-2. It may be complemented by one or more additional small or full-scale
40、tests or by historical data. If historical data are used, they shall comply with the rules given in this document. 4.2 Assumptions in the extended application The following assumptions are considered when evaluating extended applications for sandwich panels: a) the ceiling is required to possess fir
41、e resistance in the end-use condition (relevant classes are given in EN 13501-2); b) the ceiling is assumed to be exposed on the entire face of one side (either from above or below) to the standardised heating conditions given in the EN 1363-1 fire resistance test specification; c) the structure to
42、which the ceiling is fixed does not deflect during the fire exposure period; this simulates the non-deflecting nature of the test frame which forms part of the furnace test apparatus; NOTE In reality constructions deflect and this fact should be taken into account when designing the building and pla
43、nning the constructional details. d) after delamination of the fire exposed facing, the dead load of the panels is carried by a support structure to which the ends of the sandwich panels are attached; the forces from the dead load will be distributed to the support structure by the panel fixings fro
44、m which loadbearing capacity shall be evaluated; e) the support structure has at least the same loadbearing capacity, R, of the resistance to fire performance as the sandwich panel ceiling regarding integrity; f) the self weight of the facing and core is calculated from the volume and density of the
45、 materials; BS EN 15254-7:2012EN 15254-7:2012 (E) 7 g) the calculation of the reduction in the strength properties of steel at elevated temperature shall be in accordance with EN 1993-1-2. 4.3 Assumed structural behaviour of a sandwich panel in fire When one face of a sandwich panel assembly is expo
46、sed to fire, the following behaviour may be expected. Delamination of the fire-exposed face will occur after a couple of minutes in a fire. After delamination, the flexural strength of the assembly is lost and, unless both faces are restrained at the ends, the panels can collapse. The fastenings for
47、 the ends of the panels need to support the dead load of the whole panel for the entire fire resistance period. The behaviour slightly differs depending on the direction of the fire (from above or below). In both cases, the structure acts as a catenary construction. NOTE Annex A illustrates typical
48、behaviour of panels. 5 Rules for extended applications of the tested product 5.1 General When performing extended applications for a tested ceiling, changes can occur either in the materials and/or in the construction. Both are dealt with in this standard. Table 1 and Table 2 list the changes which
49、may or may not be made in an extended application assessment. The rules for the changes are either given in Table 1 or Table 2 or in 5.2 and 5.3. Table 1 Material changes relevant to extended application Parameter Factors Factor influence on performance Rules Integrity E Insulation I Changes in metal facings Chemical composition of coating influence no influence a5.2.2.1 Change from coated to non-coated metal no influence influence 5.2.2.1 Sheet thickne
