SIST EN 15254-7:2012

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Erweiterter Anwendungsbereich der Ergebnisse von Feuerwiderstandsprüfungen - Nichttragende Unterdecken - Teil 7: Sandwichelemente in MetallbauweiseApplication étendue des résultats d´essais de résistance au feu - Plafonds non porteurs
Panneaux sandwiches métalliques pour la construction - Partie 7 : Panneaux sandwiches métalliques pour la constructionExtended application of results from fire resistance tests - Non-loadbearing ceilings — Part 7: Metal sandwich panel construction91.060.10Stene. Predelne stene. FasadeWalls. Partitions. Facades13.220.50Požarna odpornost gradbenih materialov in elementovFire-resistance of building materials and elementsICS:Ta slovenski standard je istoveten z:EN 15254-7:2012SIST EN 15254-7:2012en,fr,de01-november-2012SIST EN 15254-7:2012SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15254-7
June 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 construction Application étendue des résultats d´essais de résistance au feu - Plafonds non porteurs - Partie 7: Panneaux sandwiches métalliques pour la construction
Erweiterter Anwendungsbereich der Ergebnisse von Feuerwiderstandsprüfungen - 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 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 to the CEN-CENELEC Management Centre or to any CEN member.
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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 whole 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 — 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 13501-2, 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, symbols 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 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 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 applied to a parameter SIST EN 15254-7:2012

catenary force acting on the fasteners
Fv
vertical force due at g acting at the fastener FEd1
catenary force acting at the fastener at maximum temperature in the test
FEd2
catenary force acting at the fastener at temperature for the increased span
Fv1
vertical force due at g acting at the fastener at maximum temperature in the test
vertical 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 α
linear coefficient of 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 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 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 fire 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 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 planning 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 from 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 materials; SIST EN 15254-7:2012

NOTE Annex A illustrates typical 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 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 a
5.2.2.1 Change from coated to non-coated metal no influence influence 5.2.2.1 Sheet thickness influence no influence a Valid up to + 50 % of tested nominal thickness but no decrease is allowed for thicknesses below 0.5 mm and fixing capacity shall be checked Change from one metal to another influence influence 5.2.2.2 Change in sheet geometry influence influence 5.2.2.3 Changes in adhesive Amount
influence influence 5.2.3 Type influence
no influence a 5.2.3 Changes in core material Type major influence major influence 5.2.4 Change in composition
major influence
major influence
5.2.4.2 - 5.2.4.7 a It is understood that when a change in a factor can influence the integrity of a joint, there is a possibility that a change in leakage of hot gases or in joint geometry can also influence the temperature rise near the joint and therefore influence the insulation rating. SIST EN 15254-7:2012

Allowed Increase influence
no influence a 5.3.1 Panel width Decrease no influence no influence Allowed Increase influence
no influence a Test results valid up to + 20 % Panel thickness e.g. core thickness Decrease/increase influence major influence 5.3.2 Joint construction Type major influence
major influence
5.3.3 Stiching decreased influence
influence Not allowed Stiching increased influence
influence 5.3.3 Sealants influence influence 5.3.3 Fixing system Type major influence
no influence a 5.3.4 Amount decreased major influence
no influence a 5.3.4 Amount increased influence
no influence a Allowed Protection decreased major influence
influence
5.3.4 Protection increased influence
influence
Allowed Length of assembly Decrease no influence no influence 5.3.5 Increase influence no influence a 5.3.5 Width of assembly Decrease no influence no influence 5.3.5 Increase no influence no influence 5.3.5 Support structure Changes influence no influence a 5.5 a It is understood that when a change in a factor can influence the integrity of a joint, there is a possibility that a change in leakage of hot gases or in joint geometry can also influence the temperature rise near the joint and therefore influence the insulation rating.
5.2 Variations in the materials of the product 5.2.1 General Sandwich panels consist of three main materials: facing metal sheets, adhesive and core material. In the case of auto-adhesively bonded panels, the foamed core material also forms the adhesive layer during the foaming process.
Changes in the components of a panel can have influences on the fire resistance. The rules in Clause 5 apply to such changes. 5.2.2 Variations in the metal sheets 5.2.2.1 Variations in the coatings The most essential property of the coating with regard to fire resistance is the emissivity on the non-exposed side. Normally the emissivity for a coated steel sheet is between 0,8 and 0,95. A change in emissivity of -10 % for a new coating compared to the tested one is thus allowed if there is at least a 10 % margin in the insulation SIST EN 15254-7:2012
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