prEN 1991-1-7

SLOVENSKI STANDARD
01-december-2023
Nadomešča:
SIST EN 1991-1-7:2006
Evrokod 1: Vplivi na konstrukcije -1-7. del: Nezgodni vplivi
Eurocode 1 - Actions on structures - Part 1-7: Accidental actions
Eurocode 1 - Einwirkungen auf Tragwerke - Teil 1-7: Außergewöhnliche Einwirkungen
Eurocode 1 - Actions sur les structures - Partie 1-7: Actions accidentelles
Ta slovenski standard je istoveten z: prEN 1991-1-7
ICS:
91.010.30 Tehnični vidiki Technical aspects
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2023
ICS 91.010.30
English Version
Eurocode 1 - Actions on structures - Part 1-7: Accidental
actions
Eurocode 1 - Actions sur les structures - Partie 1-7: Eurocode 1 - Einwirkungen auf Tragwerke - Teil 1-7:
Actions accidentelles Außergewöhnliche Einwirkungen
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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1991-1-7:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
0 Introduction . 5
1 Scope . 8
1.1 Scope of prEN 1991-1-7 . 8
1.2 Assumptions . 8
2 Normative references . 8
3 Terms, definitions and symbols . 8
3.1 Terms and definitions . 8
3.2 Symbols . 12
4 Basis of design . 13
4.1 General strategies . 13
4.2 Accidental design situations — strategies for identified accidental actions . 13
4.3 Accidental design situations — use of consequence classes . 14
5 Impact . 16
5.1 Field of application . 16
5.2 Classification of actions . 17
5.3 Representation of actions . 17
5.4 Accidental actions caused by road vehicles . 17
5.5 Accidental actions caused by forklift trucks . 21
5.6 Accidental actions caused by derailed rail traffic under or adjacent to structures . 21
5.7 Accidental actions caused by ship traffic . 24
5.8 Accidental actions caused by helicopters . 27
6 Internal explosions . 28
6.1 Field of application . 28
6.2 Representation of action . 28
6.3 Principles for design . 29
Annex A (informative) Actions for tying systems and key members . 31
A.1 Use of this Annex . 31
A.2 Scope and field of application . 31
A.3 Horizontal ties . 31
A.4 Vertical ties . 34
A.5 Key members . 34
Annex B (informative) Information on risk assessment . 35
B.1 Use of this annex . 35
B.2 Scope and field of application . 35
B.3 Description of scope, assumptions and limitations of a risk analysis . 35
B.4 Methods of risk analysis . 36
B.5 Risk evaluation and acceptance . 37
B.6 Risk mitigating measures . 39
B.7 Reconsideration . 39
B.8 Communication of results and conclusions . 39
B.9 Applications to buildings and civil engineering structures . 39
Annex C (informative) Dynamic design for impact . 47
C.1 Use of this annex . 47
C.2 Scope and field of application . 47
C.3 General . 47
C.4 Impact dynamics . 48
C.5 Impact from aberrant road vehicles . 49
C.6 Impact by ships . 52
Annex D (informative) Internal explosions. 56
D.1 Use of this annex . 56
D.2 Scope and field of application . 56
D.3 General . 56
D.4 Natural gas explosions . 56
D.5 Dust explosions in rooms, vessels and bunkers . 57
D.6 Explosions in road and rail tunnels . 59
D.7 Dust, gas and vapour/air explosions in energy ducts . 60
Annex E (informative) Actions from debris . 64
E.1 Use of this annex . 64
E.2 Scope and field of application . 64
E.3 Actions from debris . 64
Bibliography . 66

European foreword
This document (prEN 1991-1-7:2023) has been prepared by Technical Committee CEN/TC 250
“Structural Eurocodes”, the secretariat of which is held by BSI. CEN/TC 250 is responsible for all
Structural Eurocodes and has been assigned responsibility for structural and geotechnical design matters
by CEN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 1991-1-7:2006.
The first generation of EN Eurocodes was published between 2002 and 2007. This document forms part
of the second generation of the Eurocodes, which have been prepared under Mandate M/515 issued to
CEN by the European Commission and the European Free Trade Association.
The Eurocodes have been drafted to be used in conjunction with relevant execution, material, product
and test standards, and to identify requirements for execution, materials, products and testing that are
relied upon by the Eurocodes.
The Eurocodes recognize the responsibility of each Member State and have safeguarded their right to
determine values related to regulatory safety matters at national level through the use of National
Annexes.
In comparison with the previous edition, the following technical modifications have been made:
a) Transferring design strategies for robustness and related rules to EN 1990;
b) providing consistency between text and technical information on impact;
c) limiting the scope of Annex A to rules and actions for tying systems and key members; and
d) inserting technical clarifications in Annex C.
0 Introduction
0.1 Introduction to the Eurocodes
The structural Eurocodes comprise the following standards generally consisting of a number of Parts:
— EN 1990 Eurocode — Basis of structural and geotechnical design
— EN 1991 Eurocode 1 — Actions on structures
— EN 1992 Eurocode 2 — Design of concrete structures
— EN 1993 Eurocode 3 — Design of steel structures
— EN 1994 Eurocode 4 — Design of composite steel and concrete structure
— EN 1
...