SIST EN 1992-1-2:2023/oprA1:2026

Eurocode 2 - Design of concrete structures - Part 1-2: Structural fire design

1.1   Scope of prEN 1992 1 2
(1)   This document deals with the design of concrete structures for the accidental situation of fire exposure and is intended to be used in conjunction with prEN 1992 1 1 and EN 1991 1 2. This document identifies differences from, or supplements to, normal temperature design.
(2)   This document applies to concrete structures required to fulfil a loadbearing function, separating function or both.
(3)   This document gives principles and application rules for the design of structures for specified requirements in respect of the aforementioned functions and the levels of performance.
(4)   This document applies to structures, or parts of structures, that are within the scope of prEN 1992 1 1 and are designed accordingly.
(5)   The methods given in this document are applicable to normal weight concrete up to strength class C100/115 and lightweight concrete up to strength class LC50/60.
1.2   Assumptions
(1)   In addition to the general assumptions of prEN 1990 the following assumptions apply:
-   the choice of the relevant design fire scenario is made by appropriate qualified and experienced personnel or is given by the relevant national regulation;
-   any fire protection measure taken into account in the design will be adequately maintained.

Eurocode 2 - Bemessung und Konstruktion von Stahlbeton- und Spannbetontragwerken - Teil 1-2: Tragwerksbemessung für den Brandfall

Eurocode 2 - Calcul des structures en béton - Partie 1-2 : Calcul du comportement au feu

Evrokod 2 - Projektiranje betonskih konstrukcij - 1-2. del: Projektiranje požarnovarnih konstrukcij

1.1 Področje uporabe prEN 1992 1 2
(1) Ta dokument obravnava projektiranje betonskih konstrukcij za nenamerno situacijo izpostavljenosti požaru in je namenjen uporabi v povezavi s prEN 1992 1 1 in EN 1991 1 2. Ta dokument določa razlike od običajnega projektiranja pri normalni temperaturi ali dopolnitve le-tega.
(2) Ta dokument se uporablja za betonske konstrukcije, ki morajo izpolnjevati nosilno funkcijo, ločevalno funkcijo ali obe.
(3) Ta dokument podaja načela in pravila uporabe za projektiranje konstrukcij glede na določene zahteve v zvezi z omenjenimi funkcijami in stopnjami zmogljivosti.
(4) Ta dokument se uporablja za konstrukcije ali dele konstrukcij, ki so v okviru področja uporabe prEN 1992 1 1 in so ustrezno projektirani.
(5) Metode, podane v tem dokumentu, so uporabne za beton običajne teže do razreda trdnosti C100/115 in lahki beton do razreda trdnosti LC50/60.
1.2 Predpostavke
(1) Poleg splošnih predpostavk iz prEN 1990 veljajo naslednje predpostavke:
- izbiro ustreznega scenarija projektnega požara izvede ustrezno usposobljeno in izkušeno osebje ali pa je določena z ustrezno nacionalno regulativo;
- vsak ukrep požarne zaščite, upoštevan pri projektiranju, bo ustrezno vzdrževan.

General Information

• Status: Not Published
• Public Enquiry End Date: 29-Jul-2026
• ICS: 13.220.50 - Fire-resistance of building materials and elements
• ICS: 91.010.30 - Technical aspects
• ICS: 91.080.40 - Concrete structures
• Technical Committee: KON - Structures
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 10-Jun-2026
• Due Date: 28-Oct-2026
• Ref Project: EN 1992-1-2:2023/prA1 - Eurocode 2 - Design of concrete structures - Part 1-2: Structural fire design

Relations

• Amends: kSIST FprEN 1992-1-2:2023 - Eurocode 2 - Design of concrete structures – Part 1-2: Structural fire design
• Effective Date: 05-Nov-2025

Overview

SIST EN 1992-1-2:2023/oprA1:2026 is the draft amendment to the European Standard Eurocode 2, specifically addressing the structural fire design of concrete structures. Developed by the European Committee for Standardization (CEN), this standard offers a harmonized framework for designing concrete structures to safely withstand fire exposure. It is intended for use alongside other Eurocodes, notably prEN 1992-1-1 and EN 1991-1-2, and focuses on essential safety requirements, performance levels, and the operational assumptions necessary for structural fire resistance.

Key Topics

• Scope and Applicability: The document covers the design of concrete structures required to perform loadbearing and/or separating functions during fire events. It applies to both normal-weight concrete (up to C100/115) and lightweight concrete (up to LC50/60), ensuring broad applicability in building construction.
• Principles and Application Rules: SIST EN 1992-1-2:2023/oprA1:2026 establishes the essential principles and procedures for fire design, detailing how requirements and performance targets should be met under the accidental action of fire.
• Design Scenarios and Assumptions: The standard assumes proper selection of fire scenarios conducted by qualified personnel, and requires that any specified fire protection measures are maintained throughout the structure’s life.
• Tabulated and Simplified Design Methods: It references tabulated data and simplified design methods based on tests and calculation models, offering designers practical tools for compliance.
• Advanced Design Methods: Guidance is provided for employing advanced analytical techniques, emphasizing the importance of validation against test results and the necessity for sensitivity analyses to assure structural safety.
• Normative Updates: Amendments clarify cross-references, update terminology (such as replacing "ambient temperature design" with "normal temperature design"), and refine definitions for reinforced concrete elements and fire resistance evaluation.

Applications

SIST EN 1992-1-2:2023/oprA1:2026 is central to the safety-focused design of concrete buildings and civil structures throughout Europe. Its practical applications include:

• Design of Loadbearing Elements: Structural elements like beams, columns, and slabs are designed to maintain mechanical stability during fire, ensuring overall building safety.
• Separating Functions: Structural fire design considers non-loadbearing components’ ability to prevent fire spread between building zones, maintaining their integrity under fire loading.
• Compliance with Regulatory Requirements: The standard empowers engineers and designers to meet mandatory fire resistance criteria laid out in building regulations, ensuring legal compliance.
• Use of Design Tools: By providing tabulated data, simplified methods, and guidance for advanced analysis, it supports both routine and complex projects, catering to a spectrum of design needs in the construction sector.
• Material and Execution Guidance: The standard aligns with related product and material standards, serving as a reference for specifying requirements for concrete, reinforcement, and fire protection systems.

Related Standards

• prEN 1992-1-1: General rules for the design of concrete structures, used in conjunction with Part 1-2.
• EN 1991-1-2: Actions on structures exposed to fire, providing essential input data for structural fire design.
• EN 1990 (all parts): Basis of structural and geotechnical design, establishing general design principles and safety requirements.
• EN 1993-1-2: Fire design for steel structures, relevant for mixed-material construction and comparative approaches.
• Newly Referenced Eurocodes: Includes developing standards for glass structures (EN 19100), fibre-polymer composite structures (EN 19101), and tensioned membrane structures (EN 19102), reflecting ongoing evolution in European structural codes.

SIST EN 1992-1-2:2023/oprA1:2026 remains essential for ensuring consistent, robust, and legal fire-resistant design for concrete structures, highly relevant for designers, engineers, code officials, and construction professionals across Europe.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2026
Evrokod 2 - Projektiranje betonskih konstrukcij - 1-2. del: Projektiranje
požarnovarnih konstrukcij
Eurocode 2 - Design of concrete structures - Part 1-2: Structural fire design
Eurocode 2 - Bemessung und Konstruktion von Stahlbeton- und Spannbetontragwerken
- Teil 1-2: Tragwerksbemessung für den Brandfall
Eurocode 2 - Calcul des structures en béton - Partie 1-2 : Calcul du comportement au
feu
Ta slovenski standard je istoveten z: EN 1992-1-2:2023/prA1
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
91.010.30 Tehnični vidiki Technical aspects
91.080.40 Betonske konstrukcije Concrete structures
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
EN 1992-1-2:2023
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
May 2026
ICS 91.080.40
English Version
Eurocode 2 - Design of concrete structures - Part 1-2:
Structural fire design
Eurocode 2 - Calcul des structures en béton - Partie 1-2 Eurocode 2 - Bemessung und Konstruktion von
: Calcul du comportement au feu Stahlbeton- und Spannbetontragwerken - Teil 1-2:
Tragwerksbemessung für den Brandfall
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 1992-1-2:2023. 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 1992-1-2:2023/prA1:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Modification of title . 3
2 Modification of reference to other parts of the Eurocode . 3
3 Modification to Clause 0, “Introduction” . 4
4 Modification to Clause 1, “Scope” . 4
5 Modification to Clause 2, Normative references . 4
6 Modification to Clause 3, “Terms, definitions and symbols” . 5
7 Modification to Clause 4, “Basis of design” . 5
8 Modification to Clause 6, “Tabulated design data” . 5
9 Modification to Clause 7, “Simplified design methods” . 6
10 Modification to Clause 8, “Advanced design methods” . 8
11 Modification to Annex A, “Lightweight aggregate concrete structures” . 8
12 Modification to Annex D, “Buckling of columns under fire conditions” . 8
13 Modification to Annex E, “Load-bearing solid walls — complementary tables” . 8

European foreword
This document (EN 1992-1-2:2023/prA1:2026) 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 is an amendment to EN 1992-1-2:2023.
NOTE Some modifications are purely editorial corrections to improve the quality of the document and these
will not be tagged in the consolidated publication, as noted after the modification.
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.
1 Modification of title
Replace “Stahlbeton- und Spannbetontragwerken“ by “Betontragwerken“ in German title.
2 Modification of reference to other parts of the Eurocode
Replace in the following subclauses the references by the following new references:
— 0.2(1): „EN 1990 (all parts)“
— 1.2(1): „EN 1990 (all parts)“
— 3.1: „EN 1990 (all parts)“
— 4.3(1): „EN 1991-1-2:2024“
— 4.4(1): „EN 1991-1-2“
— 4.6(2): „EN 1991-1-2“
— 4.6(3): „EN 1990-1:2023+A1:2026“
— 4.7(1): „EN 1991-1-2:2024“
— 4.8(1): „EN 1991-1-2:2024“
— 5.2.1(1): „EN 1991-1-2:2024“
— 5.3.1.1(5): „EN 1991-1-2:2024“
— 5.3.2.1(8): „EN 1991-1-2:2024“
— 5.3.3.1(3): „EN 1991-1-2:2024“
— 6.2(1): „EN 1990-1“
— 6.2(3): „EN 1991-1-2:2024“
— 8.2(2): „EN 1991-1-2“
— D.1(1): „EN 1992-1-1“
— Bibliography, Reference [1]: „EN 1993-1-2“
3 Modification to Clause 0, “Introduction”
0.1 Replace “— New Eurocodes under development, e.g. Eurocode for design of structural glass” with “—
EN 19100, Eurocode 10: Design of glass structures”
0.1 Add the following new list item: “— New parts are under development, e.g. EN 19101 Eurocode 11 for
design of fibre-polymer composite structures and EN 19102 Eurocode 12 for design of tensioned
membrane structures.”
0.3(5) delete “:— ” and footnote, after EN 1991-1-2.
0.5 add “4.7(2)” to the list of NDP.
4 Modification to Clause 1, “Scope”
Add in 1.2 a new paragraph (1) and renumber the existing paragra
...