oSIST prEN 14509-2:2021

Double skin metal faced insulating panels - Factory made products - Specifications - Part 2: Structural applications - Fixings and potential uses of stabilization of individual structural elements

This document establishes requirements for factory-made structural double skin metal faced insulating panels, intended for installation as elements with interlocking or overlapping longitudinal joints in the following applications:
a)   roofs (also for refurbishment);
b)   external walls and wall cladding (e.g. on brick walls for refurbishment or sandwich panels on liner trays);
c)   walls (including partitions) and ceilings within the building envelope.
It is essential that structural double skin metal faced insulating sandwich panels according to this document (FprEN 14509-2) fulfil the requirements of EN 14509.
This document (FprEN 14509-2) gives the basic rule for use of structural sandwich panels for structural applications including fixing of panels. The clarification of which application is structural needs to be given by national provisions. The stabilization parameters needed to contribute to stabilization of individual structural elements (supporting structure) as defined as structural class II according to EN 1993-1-3 are included.
The insulating core materials covered by this document are rigid polyurethane, expanded polystyrene, extruded polystyrene foam, phenolic foam, cellular glass and mineral wool. For the stabilization purposes only, the following insulation core materials are covered rigid polyurethane, mineral wool, extruded polystyrene foam and expanded polystyrene foam.
NOTE   Polyurethane (PUR) includes polyisocyanurate (PIR).
Due to durability performance reasons, only coated face material of steel faces is used (both organic and metallic coating). Uncoated steel is not used as steel face material. Uncoated stainless steel, aluminium and copper can be used in visible faces of sandwich panels.
Panels with edge details that utilize different materials from the main insulating core are included in this document if there is no influence on mechanical performance of the panel.
Panels used in cold store applications are included in this document. Panels, put on the market as a component of a cold storage room, building and/or building envelope kit are excluded.
This document does not cover the following:
-   sandwich panels with a declared thermal conductivity for the insulating core greater than defined in the relevant harmonized European Standards for insulation materials;
-   products consisting of two or more clearly defined layers of different insulating core materials (multi-layered);
-   curved panels;
-   perforated panels;
-   fixings under permanent tension load for ceilings;
-   special type of fastening such as ‘T’ support for ceiling, threaded rods with clamps for wall, omega and clamps for wall and ceiling, injected joint with flashing and threaded rods for wall and ceiling;
-   fasteners.

Sandwich-Elemente mit beidseitigen Metalldeckschichten - Werkmäßig hergestellte Produkte - Spezifikationen - Teil 2: Tragende Anwendungen - Befestigungen und mögliche Nutzung zur Stabilisierung von einzelnen tragenden Bauteilen

Dieses Dokument legt die Merkmale von werkmäßig hergestellten Sandwich-Elementen mit beidseitigen Metalldeckschichten für den Einsatz in Elementen für tragende Anwendungen in Dächern, in Außen- und Innenwänden (einschließlich Trennwänden) und in (Unter )Decken in Gebäuden (im Folgenden als tragende Sandwich-Elemente bezeichnet) fest.
Die Sandwich-Elemente bestehen aus zwei Deckschichten und einem Dämmkern, wobei entweder ein Selbstklebeverfahren oder eine separate Klebstoffschicht verwendet wird.
Die in diesem Dokument behandelten Deckschichtwerkstoffe sind:
-   Stahl;
-   nichtrostender Stahl;
-   Aluminium;
ANMERKUNG   Aluminium deckt Aluminium-Legierungen ab.
-   Kupfer.
Die in diesem Dokument behandelten Dämmkerne sind:
-   Polyurethan-Hartschaum (PU) (siehe 3.1.15);
-   expandiertes Polystyrol (EPS) (siehe 3.1.13);
-   extrudierter Polystyrolschaum (XPS) (siehe 3.1.14);
-   Phenolharzschaum (PF) (siehe 3.1.12);
-   Mineralwolle (MW) (siehe 3.1.11).
Bei Sandwich-Elementen können die Überzüge der Deckschichten entweder organische und/oder metallische Überzüge sein.
Dieses Dokument legt Verfahren zur Bewertung und Überprüfung der Leistungsbeständigkeit (AVCP) von Merkmalen der Sandwich-Elemente fest.
Dieses Dokument gilt nicht für:
-   Sandwich-Elemente für Stabilisierungszwecke mit einem Dämmkernwerkstoff aus Phenolharzschaum;
-   Sandwich-Elemente, die aus zwei oder mehr eindeutig festgelegten Schichten unterschiedlicher Dämmkernwerkstoffe (Mehrschicht-Produkte) oder aus Werkstoffen je Deckschicht bestehen;
-   gekrümmte Sandwich-Elemente;
-   perforierte Sandwich-Elemente;
-   Sandwich-Elemente, die als (Unter )Decken verwendet werden, wenn das Befestigungsmittel unter permanenter Spannungslast steht;
   spezielle Arten von Befestigungsmitteln wie T Träger für Decken, Gewindestangen mit Klemmen für Wand, Omegabügel und Klemmen für Wand und Decke, eingepresste Verbindungen mit Dachverwahrung und Gewindestangen für Wand und (Unter )Decke;
-   Befestigungselemente;
-   Sandwich-Elemente, die als Teil von Reinraum-Bausätzen, Konditionierungsraum-Bausätzen, Kühlraum-Bausätzen sowie Kühlraum-Gebäudehüllen und  Bausätzen in Verkehr gebracht werden.

Panneaux sandwiches isolants à deux parements métalliques manufacturés - Produits manufacturés - Spécifications - Partie 2: Applications structurelles - Assemblages et utilisations potentielles pour la stabilisation d’éléments structurels individuels

Le présent document spécifie les caractéristiques des panneaux sandwiches manufacturés, structurels, isolants, à deux parements métalliques destinés à être utilisés dans les éléments pour applications structurelles dans les toitures, les parois extérieures et intérieures (y compris les cloisons) et les plafonds dans les bâtiments (ci-après dénommés panneaux sandwiches structurels).
Les panneaux sandwiches sont composés de deux parements et d'une âme isolante, assemblés soit au moyen d'une technique de collage auto-adhésif ou à l'aide d'une couche de colle séparée.
Les matériaux de parement couverts dans le présent document sont :
-   l'acier ;
-   l'acier inoxydable ;
-   l'aluminium ;
NOTE   « Aluminium » couvre les alliages d'aluminium.
-   le cuivre.
Les âmes isolantes couvertes dans le présent document sont :
-   le polyuréthane rigide (PU) (voir 3.1.15) ;
-   le polystyrène expansé (EPS) (voir 3.1.13) ;
-   la mousse de polystyrène extrudé (XPS) (voir 3.1.14) ;
-   la mousse phénolique (PF) (voir 3.1.12) ;
-   la laine minérale (MW) (voir 3.1.11).
Pour les panneaux sandwiches, le revêtement des parements peut être organique et/ou métallique.
Le présent document spécifie les procédures d'évaluation et de vérification de la constance (AVCP) des performances des caractéristiques des panneaux sandwiches.
Le présent document ne s’applique pas aux :
-   panneaux sandwiches utilisés à des fins de stabilisation, dont l'âme isolante est en mousse phénolique ;
-   panneaux sandwiches comportant deux couches, ou plus, clairement définies de différents matériaux d'âmes isolantes (multicouches) ou de matériaux par parement ;
-   panneaux sandwiches cintrés ;
-   panneaux sandwiches perforés ;
-   panneaux sandwiches utilisés comme plafonds lorsque l’attache est soumise à une charge de traction permanente ;
-   types spéciaux d'assemblages, tels que des appuis en "T" pour plafond, des tiges filetées avec brides pour paroi, des profils oméga et brides pour mur et plafond, un joint injecté avec couvre-joint et tiges filetées pour paroi et plafond ;
-   fixations ;
-   panneaux sandwiches, mis sur le marché comme composants de kits de salle blanche, kits de salle de conditionnement, kits de chambre d'entreposage frigorifique et kits d'enveloppe de bâtiment et de bâtiments d'entreposage frigorifique.

Izolacijske sendvič plošče z obojestranskim kovinskim oplaščenjem - Tovarniško izdelani proizvodi - Specifikacije - 2. del: Konstrukcijska uporaba - Pritrditev in možna uporaba za stabilizacijo posameznih konstrukcijskih elementov

General Information

• Status: Not Published
• Public Enquiry End Date: 13-Nov-2021
• ICS: 91.100.60 - Thermal and sound insulating materials
• Technical Committee: IKER - Ceramics
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 15-Sep-2021
• Due Date: 02-Feb-2022
• Completion Date: 15-Nov-2021
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Mandate: M/120 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on structural metallic products and ancillaries
• Ref Project: prEN 14509-2 - Double skin metal faced insulating panels - Factory made products - Specifications - Part 2: Structural applications - Fixings and potential uses of stabilization of individual structural elements

Relations

• Revised: oSIST prEN 14509-2:2017 - Double skin metal faced insulating panels - Factory made products - Specifications - Part 2: Structural applications - Fixings and potential uses of stabilization of individual structural elements
• Effective Date: 14-Apr-2021

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 14509-2:2021
01-november-2021
Izolacijske sendvič plošče z obojestranskim kovinskim oplaščenjem - Tovarniško
izdelani proizvodi - Specifikacije - 2. del: Konstrukcijska uporaba - Pritrditev in
možna uporaba za stabilizacijo posameznih konstrukcijskih elementov
Double skin metal faced insulating panels - Factory made products - Specifications - Part
2: Structural applications - Fixings and potential uses of stabilization of individual
structural elements
Sandwich-Elemente mit beidseitigen Metalldeckschichten - Werkmäßig hergestellte
Produkte - Spezifikationen - Teil 2: Tragende Anwendungen - Befestigungen und
mögliche Nutzung zur Stabilisierung von einzelnen tragenden Bauteilen
Panneaux sandwiches isolants à deux parements métalliques manufacturés - Produits
manufacturés - Spécifications - Partie 2: Applications structurelles - Assemblages et
utilisations potentielles pour la stabilisation d’éléments structurels individuels
Ta slovenski standard je istoveten z: prEN 14509-2
ICS:
91.100.60 Materiali za toplotno in Thermal and sound insulating
zvočno izolacijo materials
oSIST prEN 14509-2:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 14509-2:2021

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oSIST prEN 14509-2:2021


DRAFT
EUROPEAN STANDARD
prEN 14509-2
NORME EUROPÉENNE

EUROPÄISCHE NORM

August 2021
ICS 91.100.60
English Version

Double skin metal faced insulating panels - Factory made
products - Specifications - Part 2: Structural applications -
Fixings and potential uses of stabilization of individual
structural elements
Panneaux sandwiches isolants à deux parements Sandwich-Elemente mit beidseitigen
métalliques manufacturés - Produits manufacturés - Metalldeckschichten - Werkmäßig hergestellte
Spécifications - Partie 2: Applications structurelles - Produkte - Spezifikationen - Teil 2: Tragende
Assemblages et utilisations potentielles pour la Anwendungen - Befestigungen und mögliche Nutzung
stabilisation d'éléments structurels individuels zur Stabilisierung von einzelnen tragenden Bauteilen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 128.

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-CENELEC
Management Centre has the same status as the official versions.

CEN members 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey 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

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 14509-2:2021 E
worldwide for CEN national Members.

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prEN 14509-2:2021 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references. 6
3 Terms, definitions, symbols, subscripts and abbreviations. 6
3.1 Terms and definitions . 6
3.2 Symbols, subscripts and abbreviations . 7
4 Characteristics . 8
4.1 Mechanical resistance . 8
4.2 Load bearing capacity . 12
4.3 Resistance to fixing . 12
4.4 Racking strength . 13
4.5 Thermal transmittance . 14
4.6 Reaction to fire . 14
4.7 Resistance to fire. 14
4.8 External fire performance – roofs . 14
4.9 Dimensional tolerances for sandwich panels. 14
4.10 Water permeability . 14
4.11 Air permeability . 15
4.12 Water vapour permeability . 15
4.13 Airborne sound insulation (Rw(C;Ctr)) . 15
4.14 Sound absorption (αw) . 16
4.15 Durability . 16
5 Assessment and verification of constancy of performance - AVCP . 17
5.1 General . 17
5.2 Assessment of performance . 17
5.3 Verification of constancy of performance . 20
Annex ZA (informative) Relationship of this European Standard with Regulation (EU)
No.305/2011 . 25
Bibliography . 33

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oSIST prEN 14509-2:2021
prEN 14509-2:2021 (E)
European foreword
This document (prEN 14509-2:2021) has been prepared by Technical Committee CEN/TC 128 “Roof
covering products for discontinuous laying and products for wall cladding”, the secretariat of which is
held by NBN.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a standardization request given to CEN by the European
Commission and the European Free Trade Association.
For relationship with Directive(s) / Regulation (s), see informative Annex ZA, which is an integral part of
this document.
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prEN 14509-2:2021 (E)
Introduction
In prEN 14509-1:2021, the rules for assessment of performance are given for use as self-supporting
panels, as this document (prEN 14509-2:2021) is for use as structural panels.
The clarification of which application is self-supporting is given by national provisions.
Sandwich panels fulfilling requirements for applications for structural class II are also deemed to fulfill
applications for structural class III according to EN 1993-1-3:2006.
This document includes determination of fixing performance of structural sandwich panels to
substructure. The panels are used for both applications where they do not stabilize the supporting
structure and also for applications where they stabilize the supporting structure.
NOTE 1 Fixing is covering only the failure modes in panels caused by the fastening. The fastener component or
fastening to substructure is not covered by this document.
The stabilization parameters needed to contribute to stabilization of individual structural elements
(supporting structure) as defined as structural class II according to EN 1993-1-3:2006 are included.
NOTE 2 The stabilization parameters (e.g. rotational stiffness, lateral restraint) related to the essential
characteristic racking resistance, are needed for design of supporting structure.
Methods for the determination of characteristics described in this document are given in
prEN 14509-3:2021.
Methods for the fixing of panels and determination of restraining effect on substructures are given in
prEN 14509-4:2021.
Design rules and criteria for combing actions and spans are given in prEN 14509-5:2021.
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prEN 14509-2:2021 (E)
1 Scope
This document specifies characteristics of factory-made structural double skin metal faced insulating
sandwich panels for use in elements for structural applications in roofs, in external and internal walls
(including partitions) and in ceilings in buildings (hereafter referred to as structural sandwich panels).
The sandwich panels consist of two faces and insulating core either by using an auto-adhesive bonding
technique or by using a separate adhesive layer.
The face materials covered by this document are:
— steel,
— stainless steel,
— aluminium,
NOTE Aluminium covers aluminium alloys.
— copper
The insulating cores covered by this document are:
— rigid polyurethane (PU) (see 3.1.15);
— expanded polystyrene (EPS) (see 3.1.13);
— extruded polystyrene foam (XPS) (see 3.1.14);
— phenolic foam (PF) (see 3.1.12);
— mineral wool (MW) (see 3.1.11).
For sandwich panels the coating of faces can be either organic and/or metallic coating.
This document specifies procedures for assessment and verification of constancy (AVCP) of performance
of characteristics of sandwich panels.
This document does not cover the following:
— sandwich panels used for stabilization purposes having insulation core material of phenolic foam;
— sandwich panels consisting of two or more clearly defined layers of different insulating core
materials (multi-layered) or of materials per face;
— curved sandwich panels;
— perforated sandwich panels;
— sandwich panels used as ceilings when fastening is under permanent tension load;
— special type of fastening such as ‘T’ support for ceiling, threaded rods with clamps for wall, omega
and clamps for wall and ceiling, injected joint with flashing and threaded rods for wall and ceiling;
— fasteners;
— sandwich panels, placed on the market as a part of clean room kits, conditioning room kits, cold
storage room kits and cold storage building envelope and building kits.
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prEN 14509-2:2021 (E)
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
CEN/TS 1187:2012, Test methods for external fire exposure to roofs
EN 1993-1-4:2006, Eurocode 3 - Design of steel structures - Part 1-4: General rules - Supplementary rules
for stainless steels
1
EN 1999-1-4:2007 , Eurocode 9 - Design of aluminium structures - Part 1-4: Cold-formed structural
sheeting
EN 13501-1:2018, Fire classification of construction products and building elements - Part 1: Classification
using data from reaction to fire tests
prEN 14509-1:2021, Self-supporting double skin metal faced insulating panels - Factory made products -
Specification
prEN 14509-3:2021, Factory made double skin metal faced insulating sandwich panels - Part 3: Test
methods for determining mechanical strength, building physical behaviour and durability
prEN 14509-4:2021, Factory made double skin metal faced insulating sandwich panels - Part 4: Test
methods for fixing of panels and for determining restraining effect on substructure
prEN 14509-5:2021, Factory made double skin metal faced insulating sandwich panels - Part 5: Design
methods - Determination criteria for combing actions and spans
3 Terms, definitions, symbols, subscripts and abbreviations
3.1 Terms and definitions
For the purposes of this document, the terms, definitions, symbols, subscripts and abbreviations given in
prEN 14509-1:2021 and the following apply.
3.1.1
fastener
component (screw incl. washer, with or without sealant if relevant) used for fixing the panel to the
supporting structure
3.1.2
fastening
covers all components of sandwich panel, fastener and supporting structure, for mechanical connection
of sandwich panel to supporting structure

1
As impacted by EN 1999-1-4:2007/A1:2011.
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oSIST prEN 14509-2:2021
prEN 14509-2:2021 (E)
3.1.3
fixing
mechanical connection between the sandwich panel and the supporting structure, typically with one
fastener or more fasteners in a visible fixing (through the sandwich panel) or in a hidden fixing (placed
in the longitudinal joint of the sandwich panel)
Note 1 to entry: Fixing is covering only the failure modes in sandwich panels caused by the fastening.
3.1.4
hidden fixing
mechanical connection between the sandwich panel and the supporting structure, placed in the
longitudinal joint of adjacent sandwich panels consisting of one or more fasteners (with or without
washer) going through or connecting both sheets in a certain arrangement in relation to the sandwich
panel geometry, with or without load spreading plate
Note 1 to entry: Visible fixings can be covered by flashings after installation.
3.1.5
load spreading profile
metal component used to distribute the load from the fasteners to the panel
3.1.6
stiffness parameter
stiffening effect on supporting structure given by sandwich panels when fastened to supporting structure
3.1.7
visible fixing
one or more fasteners in a certain minimum distance to the sandwich panel edges and between
themselves (if applicable), visible on the visible side of the face of the sandwich panel, penetrating the
inner and the outer surface and the core of the sandwich panel
3.2 Symbols, subscripts and abbreviations
3.2.1 Symbols
C rotational spring stiffeness
3.2.2 Subscripts
θ compression creep index
3.2.3 Abbreviations
SLS serviceability limit state
ULS ultimate limit state
NOTE In the following Clause 4, the specific requirements will follow the relevant clauses in
prEN 14509-1:2021. Where text is similar to prEN 14509-1:2021, only reference to prEN 14509-1:2021 is given.
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prEN 14509-2:2021 (E)
4 Characteristics
4.1 Mechanical resistance
4.1.1 General
Mechanical resistance of the sandwich panels consists of the following proxy characteristics:
— characteristics of metal faces (as specified in 4.1.2)
—  yield strength
—  nominal thickness
—  tolerances of thickness
— shear strength for short term loading (as specified in 4.1.3)
— shear modulus for short term loading (as specified in 4.1.4)
— creep coefficients (not relevant for wall applications) (as specified in 4.1.5)
— compressive strength (as specified in 4.1.6)
— compressive modulus (as specified in 4.1.7)
— shear strength after long-term loading (not relevant for wall (as specified in 4.1.8)
applications)
— cross panel tensile strength (as specified in 4.1.9)
— cross panel tensile modulus (as specified in 4.1.10)
— wrinkling strength (as specified in 4.1.11)
— wrinkling strength in elevated temperature (as specified in 4.1.12)
— wrinkling strength over a central support (not relevant for single (as specified in 4.1.13)
span panels)
— wrinkling strength over support in elevated temperature (not (as specified in 4.1.14)
relevant for single span panels)
— stress distribution parameter k on support (as specified in 4.1.15)
The values to be expressed shall be given with two significant digits.
4.1.2 Characteristics of metal faces
4.1.2.1 Yield strength
a) Steel faces
4.1.2.1.a For determination of yield strength the provisions in prEN 14509-1:2021, 4.1.2.1.a shall apply.
4.1.2.1.b For evaluation of the results of yield strength the provisions in prEN 14509-1:2021, 4.1.2.1.b
shall apply.
4.1.2.1.c For expression of performance of yield strength the provisions in prEN 14509-1:2021, 4.1.2.1.c
shall apply.
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prEN 14509-2:2021 (E)
b) Stainless steel faces
4.1.2.1.d For determination of yield strength the provisions in prEN 14509-1:2021, 4.1.2.1.d shall apply.
Materials shall also fulfil the requirements of EN 1993-1-4:2006, 2.1.2 when used for stabilization
purposes.
4.1.2.1.e For evaluation of the results of yield strength the provisions in prEN 14509-1:2021, 4.1.2.1.e
shall apply.
4.1.2.1.f For expression of performance of yield strength the provisions in prEN 14509-1:2021, 4.1.2.1.f
shall apply.
c) Aluminium faces
4.1.2.1.g For determination of yield strength the provisions in prEN 14509-1:2021, 4.1.2.1.g shall apply.
1
Materials shall also fulfil the requirements of EN 1999-1-4:2007 , 3.2.1 when used for stabilization
purposes.
4.1.2.1.h For evaluation of the results of yield strength the provisions in prEN 14509-1:2021, 4.1.2.1.h
shall apply.
4.1.2.1.i For expression of performance of yield strength the provisions in prEN 14509-1:2021, 4.1.2.1.i
shall apply.
d) Copper faces
4.1.2.1.j For determination of yield strength the provisions in prEN 14509-1:2021, 4.1.2.1.j shall apply.
Copper cannot be used for stabilization purposes of faces.
4.1.2.1.k For evaluation of the results of yield strength the provisions in prEN 14509-1:2021, 4.1.2.1.k
shall apply.
4.1.2.1.l For expression of performance of yield strength the provisions in prEN 14509-1:2021, 4.1.2.1.l
shall apply.
4.1.2.2 Nominal thickness
a) Steel faces
The provisions in prEN 14509-1:2021, 4.1.2.2.a shall apply.
b) Stainless steel faces
The provisions in prEN 14509-1:2021, 4.1.2.2.b shall apply.
c) Aluminium faces
The provisions in prEN 14509-1:2021, 4.1.2.2.c shall apply.
d) Copper faces
The provisions in prEN 14509-1:2021, 4.1.2.2.d shall apply
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4.1.2.3 Tolerances of thickness
a) Steel faces
The provisions in prEN 14509-1:2021, 4.1.2.3.a shall apply.
b) Stainless steel faces
The provisions in prEN 14509-1:2021, 4.1.2.3.b shall apply.
c) Aluminium faces
The provisions in prEN 14509-1:2021, 4.1.2.3.c shall apply.
d) Copper faces
The provisions in prEN 14509-1:2021, 4.1.2.3.d shall apply.
4.1.3 Shear strength (f ) for short-term loading
Cv
4.1.3.1 For the determination of shear strength the provisions in prEN 14509-1:2021, 4.1.3.1 shall
apply.
4.1.3.2 For the expression of performance of shear strength the provisions in prEN 14509-1:2021,
4.1.3.2 shall apply.
4.1.4 Shear modulus (G ) for short-term loading
c
4.1.4.1 For the determination of shear modulus, the provisions in prEN 14509-1:2021, 4.1.4.1 shall
apply.
4.1.4.2 For the expression of performance of shear modulus the provisions in prEN 14509-1:2021,
4.1.4.2 shall apply.
4.1.5 Creep coefficient (φ )
t
4.1.5.1 For the determination of creep coefficient the provisions in prEN 14509-1:2021, 4.1.5.1 shall
apply.
4.1.5.2 For the expression of performance of creep coefficient the provisions in prEN 14509-1:2021,
4.1.5.2 shall apply.
4.1.6 Compressive strength (f )
Cc
4.1.6.1 For the determination of compressive strength the provisions in prEN 14509-1:2021, 4.1.6.1
shall apply.
4.1.6.2 For the expression of performance of compressive strength the provisions in
prEN 14509-1:2021, 4.1.6.2 shall apply.
4.1.7 Compressive modulus (E )
Cc
4.1.7.1 For the determination of compressive modulus the provisions in prEN 14509-1:2021,
4.1.7.1shall apply.
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oSIST prEN 14509-2:2021
prEN 14509-2:2021 (E)
4.1.7.2 For the expression of performance of compressive modulus the provisions in
prEN 14509-1:2021, 4.1.7.2 shall apply.
4.1.8 Shear strength after long-term loading (f )
Cv long-term
4.1.8.1 For the determination of shear strength after long term loading, the provisions in
prEN 14509-1:2021, 4.1.8.1 shall apply.
4.1.8.2 For the expression of performance of shear strength after long term loading, the provisions
in prEN 14509-1:2021, 4.1.8.2 shall apply.
4.1.9 Cross panel tensile strength (f )
Ct
4.1.9.1 For the determination of cross panel tensile strength, the provisions in prEN 14509-1:2021,
4.1.9.1 shall apply.
4.1.9.2 For minimum cross panel tensile strength the provisions in prEN 14509-1:2021, 4.1.9.2 shall
apply.
4.1.9.3 For the expression of performance of cross panel tensile strength, the provisions in
prEN 14509-1:2021, 4.1.9.3 shall apply.
4.1.10 Cross panel tensile modulus (E )
Ct
4.1.10.1 For the determination of cross panel tensile modulus, the provisions in prEN 14509-1:2021,
4.1.10.1 shall apply.
4.1.10.2 For the expression of performance of cross panel tensile modulus, the provisions in
prEN 14509-1:2021, 4.1.10.2 shall apply.
4.1.11 Wrinkling strength (σ )
w
4.1.11.1 For the determination of wrinkling strength for each face of the panel the provisions in
prEN 14509-1:2021, 4.1.11.1 shall apply:
a) without testing using calculation, as specified in prEN 14509-1, 4.1.11 a).
b) by testing as specified in prEN 14509-1, 4.1.11 b).
4.1.11.2 For the expression of performance of wrinkling strength the provisions in
prEN 14509-1:2021, 4.1.11.2 shall apply.
4.1.12 Wrinkling strength at elevated temperature (σ )
wT
4.1.12.1 For the determination of wrinkling strength for each face of the panel in elevated
temperature, the provisions in prEN 14509-1:2021, 4.1.12.1 shall apply.
4.1.12.2 For the expression of performance of wrinkling strength in elevated temperature, the
provisions in prEN 14509-1:2021, 4.1.12.2 shall apply.
4.1.13 Wrinkling strength over a central support (σ )
ws
4.1.13.1 For the determination of wrinkling strength for each face of the panel over a central support,
the provisions in prEN 14509-1:2021, 4.1.13.1 shall apply.
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oSIST prEN 14509-2:2021
prEN 14509-2:2021 (E)
4.1.13.2 For the expression of performance the provisions in prEN 14509-1:2021, 4.1.13.2 shall apply.
4.1.14 Wrinkling strength over a central support at elevated temperature (σ )
wsT
4.1.14.1 For the determination of wrinkling strength for each face of the panel over a central support
in elevated temperature, the provisions in prEN 14509-1:2021, 4.1.14.1 shall apply.
4.1.14.2 For the expression of performance of wrinkling strength over a central support in elevated
temperature, the provisions in prEN 14509-1:2021, 4.1.14.2 shall apply.
4.1.15 Stress distribution factor over a support (k)
4.1.15.1 For the determination of stress distribution factor over support, the provisions in
prEN 14509-1:2021, 4.1.15.1 shall apply.
4.1.15.2 For the expression of performance of stress distribution factor over support, the provisions
in prEN 14509-1:2021, 4.1.15.2 shall apply.
4.2 Load bearing capacity
4.2.1 The characteristic load bearing capacity for sandwich panels with metal faces shall be determined
for serviceability limit state and ultimate limit state in accordance to prEN 14509-5:2021, Clause 4 in
relation to span. The lower results of both limit states shall be reported (e.g. using load-span tables or
graphs or calculation notes).
4.2.2 The performance of load bearing capacity shall be expressed in relation to the span of the panel
(e.g. using load-span tables or graphs or calculation notes). For the load bearing capacity, the values shall
2
be given as characteristic values in kN/m and for span in m and taking creep and temperature (colour
groups) into account.
2
EXAMPLE The load is 1,1 kN/m for 5 m span (single span, wind load) (/color group I).
4.3 Resistance to fixing
4.3.1 The characteristic pull-through tensile resistance and the shear resistance of the fixing between
the sandwich panel and the supporting structure shall be determined in accordance with
prEN 14509-4:2021, Clause 4. Failure modes in the panel are only covered.
4.3.2 The performance of fixings shall be jointly expressed as follows:
a) For visible fixings:
— The values of tensile resistance and shear resistance in kN; together with specification of fastener
as specified in prEN 14509-4:2021. 4.1.1;
EXAMPLE
Tensile resistance  F  =2,1 kN,
Rtk, rep
Shear resistance  F  = 0,7 kN
Rvk
for the fastener type self-drilling screw (Code NNN-S19-5,5*190-A2, or similar) of stainless steel, diameter
5,5 mm and washer of stainless steel with diameter 19 mm, edge distance > 30 mm and panel face
thickness > 0,5 mm
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oSIST prEN 14509-2:2021
prEN 14509-2:2021 (E)
b) For hidden fixings:
— The values of tensile resistance and shear resistance in kN; together with specification of fastener
as specified in prEN 14509-4:2021. 4.1.1.
EXAMPLE
Tensile resistance  FRtk, rep  =2,6 kN,
Shear resistance  F  = 0,7 kN
Rvk
for the fastener type self-drilling screw (Code MMM-5,5*140-A2, or similar) of stainless steel, diameter
5,5 mm, load spreading plate of code zxy in stainless steel of grade EN 1.4301 (230), one screw in the
middle of the load spreading plate. Panel face thickness > 0,5 mm
4.4 Racking strength
4.4.1 General
Racking strength of the sandwich panels are in this standard limited to the stabilisation purposes of the
supporting member which are dealt with following:
— stiffness parameters (rotational spring stiffness C compression creep coefficient φ shear stiffness
D, θ,
factor k ), see 4.4.2 to 4.4.4;
v
— core modulus of elasticity E as specified in 4.4.5.
C
4.4.2 Rotational spring stiffness
4.4.2.1 Rotational spring stiffness C shall be determined either by calculation as given in
D
prEN 14509-4:2021, 5.2.2.4 or by testing as given in prEN 14509-4:2021, 5.2.2.2.
4.4.2.2 The performance of rotational spring stiffness shall be expressed as indication of a value C
D
(dimensionless).
4.4.3 Compression creep coefficient φθ
4.4.3.1 Compression creep coefficient shall be determined as given in prEN 14509-4:2021, 5.2.2.3.
4.4.3.2 The performance of compression creep coefficient shall be expressed as indication of a value
φ (dimensionless).
θ
4.4.4 Shear stiffness factort k
V
4.4.4.1 Shear stiffness factor shall be determined as given in prEN 14509-4:2021, 5.3.
4.4.4.2 The performance of shear stiffness factor k shall be expressed as indication of a value k
V V
(kN/mm).
4.4.5 Core modulus of elasticity E
C
4.4.5.1 Core modulus of elasticity is determined as given in prEN 14509-4:2021, 5.2.2.4.
4.4.5.2 The performance of core modulus of elasticity shall be expressed as mean value EC in MPa
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