1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 15254-5:2009Extended application of resultsfrom fire resistance tests Non-loadbearing wallsPart 5: Metal sandwich panel constructionBS EN 15254-5:2009 BRITISH STANDARDNatio
2、nal forewordThis British Standard is the UK implementation of EN 15254-5:2009.BSI, as a member of CEN, is obliged to publish EN 15254-5 as a British Standard. However, attention is drawn to the fact that during the development of this European Standard, the UK committee voted against its approval as
3、 a European Standard. The main reasons for this negative vote are as follows.1. Table 2 is unclear as a rule for the orientation parameter for panel joints, where joints could be used that might differ from those which are tested. The UK interpretation is that, as a gen-eral rule, the test result is
4、 only valid for the tested orientation. This rule also refers users to Annex B; however this Annex applies to span length and not orientation.2. Subclause 5.2.4.2 allows for an increase in binder content of mineral wool of 2 % for products with binder content of less than 10 %. The UK committee are
5、concerned that this could change the fire resistance properties and negatively affect test performance. 3. Subclause 5.3.1 and Annex B present a model for calculating an increase in span lengths. An ultimate limit of 12 m is intro-duced in Annex B. The UK committee are of the opinion that this is to
6、o high and point out that it has not been validated by testing.The UK committee advise users to be aware of these concerns when applying this standard, particularly in the context of a fire risk assessment of the application. The UK participation in its preparation was entrusted to Technical Committ
7、ee FSH/22/-/7, Fire resistance tests for partitions and walls.A list of organizations represented on this committee 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.
8、BSI 2011ISBN 978 0 580 55406 3ICS 13.220.50; 91.060.10Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2011.Amendments issued since publicationDate Text
9、 affectedBS EN 15254-5:2009EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15254-5 November 2009 ICS 13.220.50; 91.060.10 English Version Extended application of results from fire resistance tests - Non-loadbearing walls - Part 5: Metal sandwich panel construction Application tendue des rsultat
10、s dessais de rsistance au feu - Murs non porteurs - Partie 5 : Panneaux sandwiches mtalliques pour la construction Erweiterter Anwendungsbereich der Ergebnisse von Feuerwiderstandsprfungen - Nichttragende Wnde - Teil 5: Sandwichelemente in Metallbauweise This European Standard was approved by CEN on
11、 5 October 2009. 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
12、 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 translation under the responsibility of a CEN member into its own language and notified to the CE
13、N 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, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlan
14、ds, 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-1000 Brussels 2009 CEN All rights of exploitation in a
15、ny form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15254-5:2009: EBS EN 15254-5:2009EN 15254-5:2009 (E) 2 Contents Page Foreword . 31 Scope 42 Normative references . 43 Terms and definitions, symbols and abbreviations 43.1 Terms and definitions . 43.2 Symbols and abbre
16、viations . 54 Establishing the field of extended application 64.1 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 pro
17、duct 95.2.1 General . 95.2.2 Variations in the metal sheets . 105.2.3 Variations in the adhesive 115.2.4 Variations in the core material . 115.3 Variations in the construction . 125.3.1 Variations in span length . 125.3.2 Variations in the panel thickness 135.3.3 Variations in the joint construction
18、 . 135.3.4 Variations in the boundary conditions and fixing system 135.3.5 Length and height of wall construction 135.4 Interaction between the factor influences 135.5 Support structure 145.6 Heating conditions 146 Small scale tests and calculation methods 146.1 Small scale tests . 146.2 Calculation
19、 methods . 146.2.1 General . 146.2.2 Calculation of strength properties 146.3 Additional measurements to be carried out in the reference test . 157 Report of the extended application analysis . 15Annex A (informative) Typical behaviour of a metal faced sandwich panel wall when exposed to fire . 16An
20、nex B (normative) Evaluation of extension of span length . 17Bibliography . 20BS EN 15254-5:2009EN 15254-5:2009 (E) 3 Foreword This document (EN 15254-5:2009) has been prepared by Technical Committee CEN/TC 127 “Fire safety in buildings”, the secretariat of which is held by BSI. This European Standa
21、rd shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2010, and conflicting national standards shall be withdrawn at the latest by May 2010. Attention is drawn to the possibility that some of the elements of this docum
22、ent 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 and the European Free Trade Association, and supports essential requirement
23、s of EU Directive(s). This standard is currently composed of 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 wall
24、s 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 15254-7, Extended application of results from fire resistance tests Non-loadbearing walls Part 7: Non-load bearing sandwich panel
25、s Ceilings 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Irela
26、nd, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 15254-5:2009EN 15254-5:2009 (E) 4 1 Scope This part of EN 15254 defines rules for extended applications, provides guidance, an
27、d, where appropriate, defines procedures, for variations of certain parameters and factors associated with the design of internal and external non-loadbearing walls constructed of metal sandwich panels and that have been tested in accordance with EN 1364-1. EN 15254-5 applies for self-supporting, do
28、uble skin metal faced sandwich panels having an insulating core bonded to both facings as defined in EN 14509. 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 reference
29、s, the latest edition of the referenced document (including any amendments) applies. EN 1363-1:1999, Fire resistance tests Part 1: General requirements EN 1364-1:1999, Fire resistance tests for non-loadbearing elements Part 1: Walls EN 13501-2, Fire classification of construction products and buildi
30、ng elements Part 2: Classification using data from fire resistance tests, excluding ventilation services EN 14509, Self-supporting double skin metal faced insulating panels Factory made products Specifications EN 1993-1-2, Eurocode 3: Design of steel structures Part 1-2: General rules Structural fir
31、e design 3 Terms and definitions, symbols and abbreviations 3.1 Terms and definitions For the purposes of this document the terms and definitions given in EN 14509:2006, EN 1364-1:1999 and EN 1363-1:1999 together with the following apply. 3.1.1 direct field of application of test results outcome of
32、a process (involving the application of defined rules) 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
33、of defined rules that may incorporate calculation procedures) 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 appl
34、ied to a parameter 3.1.4 factor influence one of the potential causes of a change in the fire resistance due to a factor BS EN 15254-5:2009EN 15254-5:2009 (E) 5 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
35、fastenings and possible other means to fasten the panels to a support structure or to the test frame 3.1.7 height of assembly for horizontally or vertically installed wall panels the height of the wall in the reference test or in the end-use application 3.1.8 length of assembly for horizontally or v
36、ertically installed wall panels the length of the wall in the reference test or in the end-use application 3.1.9 reference test fire resistance test in accordance with EN 1363-1 and EN 1364-1, and where applicable EN 1363-2, on which the extended application is based and the results of which are use
37、d as the main source of data for the extended application 3.1.10 stiching device for fixing panels to panels in the longitudinal joint 3.1.11 span length centre to centre distance between the supports of a panel and/or intermediate supports to which the sandwich panel is fixed 3.1.12 support structu
38、re construction onto which the panel wall is 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. Ft,Ed
39、the tensile load on the fasteners Fv,Ed the shear load on the fasteners Ft,Rd the design tensile load on the fastener at normal temperature Fv,Rdthe design shear load on the fastener at normal temperature L span length L1distance between midspan of two adjacent panels BS EN 15254-5:2009EN 15254-5:20
40、09 (E) 6 L2overlap of the metal facing at the panel to panel joint b width of panel c1opening in adjacent metal sheet joints at normal room temperature on non exposed side c2opening in adjacent metal sheet joints during the reference test on non exposed side fjdeflection of panel to panel joint in t
41、he reference test f1f2deflection of two adjacent panels at midspan in the reference test g panel weight per square meter q pressure action on the panel in a fire situation c increase in opening of the metal sheet joint in the reference test f relative deflection of the joint compared to the adjacent
42、 panels in the reference test 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 tested one described in the test report and/or in the classification document, and which is not cove
43、red by the field of direct application of the classification document. The extended application of the wall shall be based on the reference fire test results performed according to EN 1364-1 and may be complemented by one or more additional small or full scale tests or by historical data. If histori
44、cal 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: The wall is required to possess fire resistance in the end-use condition; relevan
45、t classes are given in EN 13501-2; The wall is assumed to be exposed on the entire face of one side to the standardised heating conditions given in the EN 1363-1 fire resistance test specification; The structure above and below the wall does not deflect vertically during the fire exposure period; th
46、is simulates the non-deflecting nature of the test frame which forms part of the furnace test apparatus; NOTE In reality constructions deflect and this should be taken into account when designing the building and planning the constructional details so that no vertical loads are applied to the wall.
47、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 panels are attached; The support structure has at least the same loadbearing capacity R of the resistance to fire performance as the wall regarding integrity; BS EN 15
48、254-5:2009EN 15254-5:2009 (E) 7 The self weight of the facing and core is calculated from the volume and density of the materials; 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
49、 a sandwich panel in fire When one face of a sandwich panel assembly is exposed to fire the following behaviour may be expected. The panel initially bows towards the fire and the ends of the panel can move because of expansion of the fire-exposed face. When delamination of the fire-exposed face occurs the flexural strength of the assembly is lost and, unless both faces are restrained at the ends, the panels can collapse. The fastenings for the ends
