prEN 15254-7

SLOVENSKI STANDARD
01-september-2009
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Extended application of results from fire resistance tests - Non-loadbearing walls - Part 7:
Non-load bearing sandwich panels - Ceilings
Erweiteter Anwendungsbereich der Ergebnisse aus Feuerwiderstandsprüfungen - Teil
16: Nichttragende Sandwich-Elemente - Decken
Application étendue des résultats des essais de résistance au feu - Panneaux isolants
sandwich non porteurs - Plafonds
Ta slovenski standard je istoveten z: prEN 15254-7
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
91.060.30 Stropi. Tla. Stopnice Ceilings. Floors. Stairs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2009
ICS
English Version
Extended application of results from fire resistance tests - Non-
loadbearing walls - Part 7: Non-load bearing sandwich panels -
Ceilings
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 127.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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 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, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15254-7:2009: E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Terms, definitions, symbols and abbreviations .4
3.1 Terms and definitions .4
3.2 Symbols and abbreviations .5
4 Establishing the field of extended application .6
4.1 General .6
4.2 Assumptions in the extended application .6
4.3 Assumed structural behaviour of a sandwich panel in fire .6
5 Rules for extended applications of the tested product .7
5.1 General .7
5.2 Variations in the materials of the product .8
5.3 Variations in the construction . 11
5.4 Interaction between the factor influences . 12
5.5 Support structure. 12
5.6 Heating conditions. 13
6 Small scale tests and calculation methods . 13
6.1 Small scale tests . 13
6.2 Calculation methods . 13
6.3 Additional measurements to be carried out in the reference test . 14
7 Report of the extended application analysis . 14
Annex A - Informative . 15
Annex B - Normative. 17
Annex C - Normative. 19

Foreword
This document (prEN 15254-7:2009) has been prepared by Technical Committee CEN/TC 127 “Fire safety in
buildings”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
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 EC Directive(s).
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 89/106/EEC.
1 Scope
This part of prEN 15254 defines rules for extended applications, provides guidance, and where appropriate
defines procedures, for variations of certain parameters and factors associated with the design of internal non-
loadbearing ceilings constructed of metal sandwich panels and that have been tested in accordance with EN
1364-2.
prEN XXXXX-X applies for self-supporting, double skin metal faced sandwich panels having an insulating core
bonded to both facings as defined in EN 14509.
2 Normative references
This European Standard incorporates by dated or undated references, provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to
this European Standard only when incorporated in it by amendment or revision. For undated references the
latest edition of the publication referred to applies (including amendments).
EN 1363-1, Fire resistance tests — Part 1: General requirements.
EN 1363-2, Fire resistance tests — Part 2: Alternative and additional procedures.
EN 1364-2, Fire resistance tests for non-loadbearing elements — Part 2: Ceilings
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, Self-supporting double skin metal faced insulating panels - Factory made products - Specifications.
EN 1991-1-2, Eurocode 1. Actions on structures. - Part 1-2: General actions - Actions on structures exposed
to fire
EN 1993-1-2, Eurocode 3. Design of steel structures - Part 1-2: General rules. Structural fire design.
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, EN 1364-2 and EN 1363-1
together with the following apply.
3.1.1 direct field of application of test results: the 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: the 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.
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: A system consisting of fastenings and possible other means to fasten the panels to a
support structure or to the test frame.
3.1.7 length of assembly: The 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: The width of the ceiling in the cross direction of the span (or panel length) 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 1364-2, and where
applicable EN 1363-2, on which the extended application is based and the results of which are used as the
main source of data for the extended application.
3.1.10 span, span length: Distance between supports.
3.1.11 stiching: The device for fixing panels to panels in the longitudinal joint.
3.1.12 span length: center to center distance between the supports of a panel and/or intermediate supports
to which the sandwich panel is fixed
3.1.13 support structure: The construction onto which the panel ceiling is fastened in the end use
application.
3.1.14 test frame: The 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.
F the catenary force acting on the fasteners
Ed
F the design value for the fastener at normal temperature
Rd
L span length
T temperature
b width of panel
g panel weight per square meter
k decrease in yield strength due to increased temperature
n number of fasteners
p relative en 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
tested one 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 ceiling shall be based on the reference fire test results performed according to
EN 1364-2 and 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:
 the ceiling is required to possess fire resistance in the end-use condition. Relevant classes are given in
EN 13501-2,
 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
 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 should be taken into account when designing the building and planning
the constructional details,
 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 forces from the dead load will be distributed to the
support structure by the panel fixings which loadbearing capacity must be evaluated,
 the support structure has at least the same loadbearing capacity R of the resistance to fire performance
as the ceiling regarding integrity,
 the self weight of the facing and core is calculated from the volume and density of the materials. For
calculation purposes the density of steel sheet shall be 7850 kg/m and the density of the core material at
elevated temperature shall be the density at room temperature,
 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 exposed to fire the following behaviour may be expected.
Delamination of the fire-e
...