EN 1991-1-9:2025/prA1
(Amendment)Eurocode 1 - Actions on structures - Part 1-9: Atmospheric icing
Eurocode 1 - Actions on structures - Part 1-9: Atmospheric icing
1.1 Scope of EN 1991-1-9
(1) EN 1991 1 9 gives principles and rules to determine the values of loads due to atmospheric icing to be used for following types of structures:
- masts;
- towers;
- antennas and antenna structures;
- cables, stays, guy ropes and similar structures;
- rope ways (cable railways);
- structures for ski-lifts;
- buildings or parts of them exposed to potential icing;
- special types of structures, such as towers for transmission lines and wind turbines.
NOTE Atmospheric icing on electrical overhead lines is covered by EN 50341-1.
(2) EN 1991-1-9 specifies values for:
- dimensions and weight of accreted ice;
- shapes of accreted ice.
(3) EN 1991-1-9 covers types of icing, ice loads acting on structures, and falling ice considerations.
NOTE For wind actions on iced structures, see EN 1991-1-4.
1.2 Assumptions
The assumptions given in EN 1990:2023, 1.2 apply.
EN 1991-1-9 is intended to be used with EN 1990 (all parts), the other parts of EN 1991 and EN 1992 (all parts) to EN 1999 (all parts) for the design of structures.
Eurocode 1 - Einwirkungen auf Tragwerke - Teil 1-9: Atmosphärische Eisbildung
Eurocode 1 - Actions sur les structures - Partie 1-9 : Actions du givre atmosphérique
Evrokod 1 - Vplivi na konstrukcije - 1-9. del: Atmosferski žled
1.1 Področje uporabe EN 1991-1-9
(1) EN 1991-1-9 določa načela in pravila za določitev vrednosti obremenitev zaradi atmosferskega poledenitve, ki se uporabljajo za naslednje vrste konstrukcij:
- antenski stolpi;
- stolpi;
- antene in antenske konstrukcije;
- kabli, zatege, vrvi in podobne konstrukcije;
- žičnice (kabelske železnice);
- konstrukcije za smučarske vlečnice;
- zgradbe ali njihovi deli, izpostavljeni morebitni poledenitvi;
- posebne vrste konstrukcij, kot so stolpi za prenosne linije in vetrne turbine.
OPOMBA Atmosferska poledenitev na električnih nadzemnih vodih je zajeta v EN 50341-1.
(2) EN 1991-1-9 določa vrednosti za:
- dimenzije in težo nabrane ledu;
- oblike nabrane ledu.
(3) EN 1991-1-9 zajema vrste poledenitev, obremenitve z ledom, ki delujejo na konstrukcije, in upoštevanje padajočega ledu.
OPOMBA Za delovanje vetra na poledenelih konstrukcijah glej EN 1991-1-4.
1.2 Predpostavke
Predpostavke, navedene v EN 1990:2023, 1.2, veljajo.
EN 1991-1-9 je namenjen uporabi z EN 1990 (vse dele), drugimi deli EN 1991 in EN 1992 (vse dele) do EN 1999 (vse dele) za projektiranje konstrukcij.
General Information
- Status
- Not Published
- Publication Date
- 09-Feb-2028
- Technical Committee
- CEN/TC 250 - Structural Eurocodes
- Drafting Committee
- CEN/TC 250/SC 1/WG 2 - Atmospheric icing of structures
- Current Stage
- 4020 - Submission to enquiry - Enquiry
- Start Date
- 30-Apr-2026
- Due Date
- 24-Sep-2026
- Completion Date
- 30-Apr-2026
Relations
- Effective Date
- 05-Nov-2025
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Frequently Asked Questions
EN 1991-1-9:2025/prA1 is a draft published by the European Committee for Standardization (CEN). Its full title is "Eurocode 1 - Actions on structures - Part 1-9: Atmospheric icing". This standard covers: 1.1 Scope of EN 1991-1-9 (1) EN 1991 1 9 gives principles and rules to determine the values of loads due to atmospheric icing to be used for following types of structures: - masts; - towers; - antennas and antenna structures; - cables, stays, guy ropes and similar structures; - rope ways (cable railways); - structures for ski-lifts; - buildings or parts of them exposed to potential icing; - special types of structures, such as towers for transmission lines and wind turbines. NOTE Atmospheric icing on electrical overhead lines is covered by EN 50341-1. (2) EN 1991-1-9 specifies values for: - dimensions and weight of accreted ice; - shapes of accreted ice. (3) EN 1991-1-9 covers types of icing, ice loads acting on structures, and falling ice considerations. NOTE For wind actions on iced structures, see EN 1991-1-4. 1.2 Assumptions The assumptions given in EN 1990:2023, 1.2 apply. EN 1991-1-9 is intended to be used with EN 1990 (all parts), the other parts of EN 1991 and EN 1992 (all parts) to EN 1999 (all parts) for the design of structures.
1.1 Scope of EN 1991-1-9 (1) EN 1991 1 9 gives principles and rules to determine the values of loads due to atmospheric icing to be used for following types of structures: - masts; - towers; - antennas and antenna structures; - cables, stays, guy ropes and similar structures; - rope ways (cable railways); - structures for ski-lifts; - buildings or parts of them exposed to potential icing; - special types of structures, such as towers for transmission lines and wind turbines. NOTE Atmospheric icing on electrical overhead lines is covered by EN 50341-1. (2) EN 1991-1-9 specifies values for: - dimensions and weight of accreted ice; - shapes of accreted ice. (3) EN 1991-1-9 covers types of icing, ice loads acting on structures, and falling ice considerations. NOTE For wind actions on iced structures, see EN 1991-1-4. 1.2 Assumptions The assumptions given in EN 1990:2023, 1.2 apply. EN 1991-1-9 is intended to be used with EN 1990 (all parts), the other parts of EN 1991 and EN 1992 (all parts) to EN 1999 (all parts) for the design of structures.
EN 1991-1-9:2025/prA1 is classified under the following ICS (International Classification for Standards) categories: 91.010.30 - Technical aspects. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 1991-1-9:2025/prA1 has the following relationships with other standards: It is inter standard links to EN 1991-1-9:2025. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 1991-1-9:2025/prA1 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2026
Evrokod 1 - Vplivi na konstrukcije - 1-9. del: Atmosferski žled
Eurocode 1 - Actions on structures - Part 1-9: Atmospheric icing
Eurocode 1 - Einwirkungen auf Tragwerke - Teil 1-9: Atmosphärische Eisbildung
Eurocode 1 - Actions sur les structures - Partie 1-9 : Actions du givre atmosphérique
Ta slovenski standard je istoveten z: EN 1991-1-9:2025/prA1
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
EN 1991-1-9:2025
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
April 2026
ICS 91.010.30
English Version
Eurocode 1 - Actions on structures - Part 1-9: Atmospheric
icing
Eurocode 1 - Actions sur les structures - Partie 1-9 : Eurocode 1 - Einwirkungen auf Tragwerke - Teil 1-9:
Actions du givre atmosphérique Atmosphärische Eisbildung
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 250.
This draft amendment A1, if approved, will modify the European Standard EN 1991-1-9:2025. If this draft becomes an
amendment, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
inclusion of this amendment into the relevant national standard without any alteration.
This draft amendment 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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1991-1-9:2025/prA1:2026 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Modifications throughout the whole document . 4
2 Modification to the Introduction . 4
3 Modification to Clause 2, “Normative References” . 4
4 Modification to Clause 3, “Terms and definitions” . 4
5 Modification to 6.4.2.2, “Single members with width (W) > 0,3 m” . 4
6 Modification to 6.5, “Variation with height above the ground” . 4
7 Modification to Clause 7, “Combination of ice loads with other actions” . 4
8 Modification to B.4, “Rime icing on members inclined to the wind d
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