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prEN 1993-7

(Main)

Eurocode 3 - Design of steel structures - Part 7: Sandwich panels

Eurocode 3 - Design of steel structures - Part 7: Sandwich panels

This Standard is applicable for the design of structural or self supporting systems made of sandwich panels with steel faces and core material with a Declaration of Performance (according to EN 14509-1 and -2) used as internal and external walls, roofs and ceilings.

Eurocode 3 - Bemessung und Konstruktion von Stahlbauten - Teil 7: Sandwich-Elemente

Eurocode 3 - Calcul des structures en acier - Partie 7 : Panneaux sandwich

Evrokod 3 - Projektiranje jeklenih konstrukcij - 7.del: Sendvič plošče

General Information

Status
Not Published
Publication Date
05-Oct-2026
ICS
91.010.30 - Technical aspects
91.080.13 - Steel structures
Technical Committee
CEN/TC 250 - Structural Eurocodes
Drafting Committee
CEN/TC 250/SC 3/WG 21 - EN 1993-7 - Design of Sandwich Panels
Current Stage
4020 - Submission to enquiry - Enquiry
Start Date
16-Jan-2025
Due Date
16-Jan-2025
Completion Date
16-Jan-2025
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/115 REV - Revised mandate M/115 to CEN/CENELEC concerning the execution of standardisation work for harmonized standards on reinforcing and prestressing steel (for concrete)
Ref Project
oSIST prEN 1993-7:2025 - Eurocode 3 - Design of steel structures - Part 7: Sandwich panels

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SLOVENSKI STANDARD
01-marec-2025
Evrokod 3 - Projektiranje jeklenih konstrukcij - 7.del: Sendvič plošče
Eurocode 3 - Design of steel structures - Part 7: Sandwich panels
Eurocode 3 - Bemessung und Konstruktion von Stahlbauten - Teil 7: Sandwich-Elemente
Eurocode 3 - Calcul des structures en acier - Partie 7 : Panneaux sandwich
Ta slovenski standard je istoveten z: prEN 1993-7
ICS:
91.010.30 Tehnični vidiki Technical aspects
91.080.13 Jeklene konstrukcije Steel structures
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2025
ICS 91.010.30; 91.080.13
English Version
Eurocode 3 - Design of steel structures - Part 7: Sandwich
panels
Eurocode 3 - Calcul des structures en acier - Partie 7 : Eurocode 3 - Bemessung und Konstruktion von
Panneaux sandwich Stahlbauten - Teil 7: Sandwich-Elemente
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 250.
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, Türkiye 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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1993-7:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 5
Introduction . 6
0.1 Introduction to the Eurocodes . 6
0.2 Introduction to EN 1993 (all parts) . 6
0.3 Introduction to EN 1993-7 . 7
0.4 Verbal forms used in the Eurocodes . 7
0.5 National annex for EN 1993-7 . 8
1 Scope . 9
Scope of EN 1993-7 . 9
Assumptions . 9
2 Normative references . 9
3 Terms, definitions and symbols . 9
Terms and definitions . 9
Symbols and abbreviations . 11
3.2.1 Latin upper case symbols . 11
3.2.2 Latin lower case symbols . 12
3.2.3 Greek symbols . 13
3.2.4 Abbrevations . 15
3.2.5 Symbols for member axes/Cross-sectional dimensions . 15
3.2.6 Geometrical data . 15
4 Basis of Design . 16
Requirements . 16
Principles of limit state design . 16
Actions and environmental influences . 16
4.3.1 Permanent actions . 16
4.3.2 Variable actions . 16
4.3.3 Temperature actions . 17
4.3.4 Seismic actions . 18
Verification by the partial factor method . 18
4.4.1 Design values of actions . 18
4.4.2 Combination of actions . 18
4.4.3 Design values of material properties . 18
5 Materials . 19
General. 19
Face material . 19
Core material - The influence of time on shear deformations of the core . 20
6 Durability . 20
7 Structural Analysis . 21
Structural modelling for global analysis . 21
7.1.1 General. 21
7.1.2 Elastic global analysis . 21
7.1.3 Plastic global analysis . 21
Specifications for sandwich panels . 21
7.2.1 Sandwich panels with flat or lightly profiled faces . 21
7.2.2 Sandwich panels with one or two profiled faces . 22
General principles for cross-sectional analysis . 22
7.3.1 General . 22
7.3.2 Stresses in sandwich panels subjected to bending . 25
7.3.3 Shear stresses in sandwich panels . 26
7.3.4 Compression stress in the core at the support . 26
Interaction between wrinkling strength and support forces or line load
perpendicular to span . 26
Panels with openings . 27
Axially loaded panels . 27
Panels with line or point loads . 27
Panels with seismic loads . 27
Stiffening effect of sandwich panels stabilizing the supporting structure . 27
Panels subjected to torsion . 28
8 Ultimate Limit States . 28
General . 28
Cross-sectional resistance of sandwich panels . 28
8.2.1 Faces . 28
8.2.2 Core . 30
Point and line loads . 32
8.3.1 Line loads perpendicular to the span . 32
8.3.2 Point loads without reduction of the wrinkling strength of the face . 32
8.3.3 Line or point loads with reduced wrinkling strength of the face . 32
Global buckling of an axially loaded panel . 33
Design of fastening . 35
9 Serviceability Limit States . 35
General . 35
Cross sectional resistance of sandwich panels . 36
9.2.1 Faces . 36
9.2.2 Core . 38
Point and line loads . 39
9.3.1 Wrinkling strengths . 39
9.3.2 Calculation of the deflections . 39
Head displacement of fastener . 40
Limiting of deflection . 40
Annex A (informative) Design formulae for standard cases . 41
Use of this annex . 41
Scope and field of application .
...

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