EN 1991-1-3:2025/prA1
(Amendment)Eurocode 1 - Actions on structures - Part 1-3: Snow loads
General Information
- Abstract
1.1 Scope of EN 1991-1-3
(1) EN 1991-1-3 gives principles and rules to determine the values of loads due to snow to be used for the structural design of buildings and civil engineering works.
(2) This document does not apply to sites at altitudes above 1 500 m, unless otherwise specified.
NOTE For rules for the treatment of snow loads for altitudes above 1 500 m, see 6.1.
(3) This document does not give guidance on specialist aspects of snow loading, for example:
- impact snow loads resulting from snow sliding off or falling from a higher roof;
- changes in shape or size of the construction works due to the presence of snow or the accretion of ice which could affect the wind action;
- loads in areas where snow is present all year round;
- lateral loading due to snow creep (e.g. lateral loads exerted by drifts);
- loads due to artificial snow.
1.2 Assumptions
The assumptions given in EN 1990:2023, 1.2 apply.
- Status
- Not Published
- Publication Date
- 09-Feb-2028
- Technical Committee
- CEN/TC 250 - Structural Eurocodes
- Drafting Committee
- CEN/TC 250/SC 1/WG 1 - Climatic actions
- Current Stage
- 4060 - Closure of enquiry - Enquiry
- Start Date
- 23-Jul-2026
- Due Date
- 17-Dec-2026
- Completion Date
- 23-Jul-2026
Overview
EN 1991-1-3:2025/prA1 is a draft amendment to part of the Eurocode series focusing on building and civil engineering design. Published by CEN, this standard specifies the principles and rules for determining snow loads on structures, ensuring the safety and reliability of buildings subject to snow accumulation. EN 1991-1-3 guides structural engineers in evaluating loads due to snow for most construction works, with certain exclusions for high-altitude sites and specialist scenarios. This amendment is part of the continually evolving Eurocode suite, reflecting ongoing developments in European construction standards.
Key Topics
Scope of Application:
- Applies to the structural design of buildings and civil engineering works concerning snow loads.
- Excludes sites at altitudes above 1,500 meters unless otherwise specified.
- Does not address specific issues such as the effects of snow sliding from roofs, permanent snow areas, or artificial snow.
Exclusions and Special Cases:
- Areas consistently above the snow line or with year-round snow accumulation require separate consideration.
- Specialist load cases, like snow drifts or falling snow impacts, are not addressed in this document.
Normative References:
- Aligns with EN 1990-1:2023+A1:2026 (Eurocode - Basis of structural and geotechnical design).
- Uses up-to-date technical language and cross-referencing according to recent amendments.
Amendments in the Draft:
- Provides updated definitions and references throughout the text.
- Modifies introduction content to reflect ongoing developments, such as new Eurocodes for glass, fibre-polymer composites, and tensioned membrane structures.
- Updates references and technical terminology to ensure consistency with the latest Eurocode standards.
Applications
EN 1991-1-3:2025/prA1 is essential for:
- Structural Engineers: Ensures accurate calculation of snow loads during the design phase, promoting structural safety and regulatory compliance.
- Architects and Building Designers: Supports compliance with European safety norms for rooftops and building envelopes exposed to variable snow conditions.
- Civil Engineering Works: Provides the foundation for load assessment on bridges, towers, and infrastructure subjected to snow accumulation.
- Building Regulators: Offers a standardized reference for national building codes and permits, aligning with pan-European requirements.
- Material and Product Testing: Interfaces with related product and testing standards to harmonize safety expectations across materials and construction methods.
By applying the provisions of this standard, designers can address risks associated with snow accumulation, contributing to safer, more durable structures across varied European climates.
Related Standards
For a complete approach to structural actions, refer to the following related documents:
- EN 1990-1:2023+A1:2026 - Eurocode: Basis of structural and geotechnical design.
- EN 1991-1-4 - Actions on structures - Wind loads.
- EN 1998 (all parts) - Eurocode for seismic design requirements (complementary for areas subject to seismic activity).
- EN 19100 Eurocode 10 - Design of glass structures (noted as under development).
- Additional Eurocodes for fibre-polymer composites and membrane structures (currently under development by CEN).
These documents together support a comprehensive, harmonized approach to structural safety and performance in construction across Europe, making EN 1991-1-3:2025/prA1 a key component in modern building design.
Relations
- Effective Date
- 05-Nov-2025
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Frequently Asked Questions
EN 1991-1-3:2025/prA1 is a draft published by the European Committee for Standardization (CEN). Its full title is "Eurocode 1 - Actions on structures - Part 1-3: Snow loads". This standard covers: 1.1 Scope of EN 1991-1-3 (1) EN 1991-1-3 gives principles and rules to determine the values of loads due to snow to be used for the structural design of buildings and civil engineering works. (2) This document does not apply to sites at altitudes above 1 500 m, unless otherwise specified. NOTE For rules for the treatment of snow loads for altitudes above 1 500 m, see 6.1. (3) This document does not give guidance on specialist aspects of snow loading, for example: - impact snow loads resulting from snow sliding off or falling from a higher roof; - changes in shape or size of the construction works due to the presence of snow or the accretion of ice which could affect the wind action; - loads in areas where snow is present all year round; - lateral loading due to snow creep (e.g. lateral loads exerted by drifts); - loads due to artificial snow. 1.2 Assumptions The assumptions given in EN 1990:2023, 1.2 apply.
1.1 Scope of EN 1991-1-3 (1) EN 1991-1-3 gives principles and rules to determine the values of loads due to snow to be used for the structural design of buildings and civil engineering works. (2) This document does not apply to sites at altitudes above 1 500 m, unless otherwise specified. NOTE For rules for the treatment of snow loads for altitudes above 1 500 m, see 6.1. (3) This document does not give guidance on specialist aspects of snow loading, for example: - impact snow loads resulting from snow sliding off or falling from a higher roof; - changes in shape or size of the construction works due to the presence of snow or the accretion of ice which could affect the wind action; - loads in areas where snow is present all year round; - lateral loading due to snow creep (e.g. lateral loads exerted by drifts); - loads due to artificial snow. 1.2 Assumptions The assumptions given in EN 1990:2023, 1.2 apply.
EN 1991-1-3:2025/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 1991-1-3:2025/prA1 has the following relationships with other standards: It is inter standard links to EN 1991-1-3:2025. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 1991-1-3:2025/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 - 1-3. del: Obtežba snega
Eurocode 1 - Actions on structures - Part 1-3: Snow loads
Eurocode 1 - Einwirkungen auf Tragwerke - Teil 1-3: Schneelasten
Eurocode 1 - Actions sur les structures - Partie 1-3 : Charges de neige
Ta slovenski standard je istoveten z: EN 1991-1-3:2025/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 1991-1-3:2025
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
April 2026
ICS 91.010.30
English Version
Eurocode 1 - Actions on structures - Part 1-3: Snow loads
Eurocode 1 - Actions sur les structures - Partie 1-3 : Eurocode 1 - Einwirkungen auf Tragwerke - Teil 1-3:
Charges de neige Schneelasten
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 1991-1-3:2025. 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 1991-1-3:2025/prA1:2026 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Modification throughout the whole document . 4
2 Modification to Introduction .
...