prEN 1994-1-2

Eurocode 4 - Design of composite steel and concrete structures - Part 1-2: Structural fire design

(1) EN 1994-1-2 gives rules for the design of steel-concrete composite structures for the accidental design situation of fire exposure. It only identifies differences from, or supplements to, rules for normal temperature design.
(2) EN 1994-1-2 only applies to structures, or parts of structures, that are within the scope of EN1994-1-1 and are designed accordingly.

Eurocode 4 - Bemessung und Konstruktion von Verbundtragwerken aus Stahl und Beton - Teil 1-2: Tragwerksbemessung für den Brandfall

1.1   Anwendungsbereich von prEN 1994 1 2
(1) prEN 1994 1 2 enthält Regeln für die Bemessung und Konstruktion von Stahl/Beton-Verbundtragwerken für die außergewöhnliche Bemessungssituation des Brandfalls. prEN 1994 1 2 legt ausschließlich Unterschiede oder Ergänzungen zu den Bemessungsregeln für Normaltemperatur fest.
(2) prEN 1994 1 2 gilt ausschließlich für Tragwerke oder Teiltragwerke, die in den Anwendungsbereich von EN 1994 1 1 fallen und dementsprechend bemessen werden.
1.2   Voraussetzungen
(1) Die in EN 1990 angegebenen Voraussetzungen gelten gemeinsam mit den folgenden:
-   die Festlegung des maßgebenden Bemessungsbrandfalls erfolgt durch angemessen qualifiziertes und erfahrenes Personal oder ist durch die maßgebende nationale Vorschrift vorgegeben;
-   jede bei der Bemessung berücksichtigte Brandschutzmaßnahme wird angemessen gewartet.

Eurocode 4 - Calcul des structures mixtes acier-béton - Partie 1-2 : Calcul du comportement au feu

1.1    Domaine d'application du prEN 1994-1-2
(1) La prEN 1994-1-2 donne des règles de calcul des ouvrages mixtes acier-béton pour la situation accidentelle d'exposition au feu. Elle identifie uniquement les différences avec les règles de calcul à température normale, ou lui apporte des compléments.
(2)   La prEN 1994-1-2 s'applique aux structures, ou parties de structures, relevant du domaine d’application de l'EN 1994 1 1 et conçues en conséquence.
1.2    Hypothèses
(1) Les hypothèses de l'EN 1990 s'appliquent, ainsi que ce qui suit :
-   le choix du scénario d’incendie de calcul pertinent est fait par un personnel possédant une qualification et une expérience appropriées, ou est indiqué par la règlementation nationale concernée ;
-   toute mesure de protection contre l'incendie prise en compte dans le calcul fera l’objet d’une maintenance adéquate.

Evrokod 4 - Projektiranje sovprežnih konstrukcij iz jekla in betona – 1-2. del: Požarnoodporno projektiranje

General Information

• Status: Not Published
• Publication Date: 20-Nov-2024
• ICS: 13.220.50 - Fire-resistance of building materials and elements
• ICS: 91.010.30 - Technical aspects
• ICS: 91.080.13 - Steel structures
• ICS: 91.080.40 - Concrete structures
• Technical Committee: CEN/TC 250 - Structural Eurocodes
• Drafting Committee: CEN/TC 250/SC 4/WG 4 - Evolution of EN 1994-1-1, EN 1994-1-2 and EN 1994-2
• Current Stage: 4060 - Closure of enquiry - Enquiry
• Start Date: 04-Jul-2024
• Due Date: 28-Sep-2023
• Completion Date: 04-Jul-2024
• 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/515 - Mandate for amending existing Eurocodes and extending the scope of structural Eurocodes
• Ref Project: oSIST prEN 1994-1-2:2024 - Eurocode 4 - Design of composite steel and concrete structures - Part 1-2: Structural fire design

Relations

• Revises: EN 1994-1-2:2005 - Eurocode 4 - Design of composite steel and concrete structures - Part 1-2: General rules - Structural fire design
• Effective Date: 24-Jan-2018

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2024
Evrokod 4 - Projektiranje sovprežnih konstrukcij iz jekla in betona – 1-2. del:
Požarnoodporno projektiranje
Eurocode 4 - Design of composite steel and concrete structures - Part 1-2: Structural fire
design
Eurocode 4 - Bemessung und Konstruktion von Verbundtragwerken aus Stahl und Beton
- Teil 1-2: Tragwerksbemessung für den Brandfall
Eurocode 4 - Calcul des structures mixtes acier-béton - Partie 1-2 : Calcul du
comportement au feu
Ta slovenski standard je istoveten z: prEN 1994-1-2
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
91.010.30 Tehnični vidiki Technical aspects
91.080.13 Jeklene konstrukcije Steel structures
91.080.40 Betonske konstrukcije Concrete structures
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2024
ICS 13.220.50; 91.010.30; 91.080.13; 91.080.40 Will supersede EN 1994-1-2:2005
English Version
Eurocode 4 - Design of composite steel and concrete
structures - Part 1-2: Structural fire design
Eurocode 4 ¿ Calcul des structures mixtes acier-béton ¿ Eurocode 4: Bemessung und Konstruktion von
Partie 1-2 : Calcul du comportement au feu Verbundtragwerken aus Stahl und Beton - Teil 1-2:
Allgemeine Regeln Tragwerksbemessung für den
Brandfall
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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1994-1-2:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 6
0 Introduction . 7
1 Scope . 10
Scope of prEN 1994-1-2 . 10
Assumptions . 10
2 Normative references . 10
3 Terms, definitions and symbols . 10
Terms and definitions . 10
Symbols and abbreviations . 12
Symbols . 12
Latin lower-case letters . 14
Additional symbols used in Annex A of prEN 1994-1-2 . 19
Additional symbols used in Annex B of prEN 1994-1-2 . 19
Additional symbols used in Annex C of prEN 1994-1-2 . 20
Additional symbols used in Annex D of prEN 1994-1-2 . 20
Additional symbols used in Annex E of prEN 1994-1-2 . 21
Additional symbols used in Annex F of prEN 1994-1-2 . 22
Additional symbols used in Annex G of prEN 1994-1-2 . 23
Additional symbols used in Annex H of prEN 1994-1-2 . 24
Additional symbols used in Annex I of prEN 1994-1-2. 25
4 Basis of design . 26
General. 26
Nominal fire exposure . 26
Physically based fire exposure . 27
Actions . 27
Design values of material properties . 27
Verification methods . 28
Member analysis . 28
Analysis of parts of the structures . 29
Global structural analysis . 29
5 Material properties . 29
General. 29
Thermal properties . 30
Carbon steel . 30
Concrete . 31
Fire protection materials . 34
Mechanical properties . 34
Carbon steel . 34
Concrete . 38
6 Tabulated design data . 41
General. 41
Beams . 41
Columns . 44
General. 44
Composite columns made of totally encased steel sections . 45
Composite columns made of partially encased steel sections . 46
Composite columns comprising concrete filled hollow sections . 47
7 Simplified design methods . 48
General . 48
General rules for composite slabs and composite beams . 48
Composite slabs . 49
Unprotected composite slabs . 49
Protected composite slabs . 50
Composite beams . 50
Thermal analysis . 50
Mechanical analysis . 54
Composite columns . 63
General . 63
Partially encased steel sections . 65
Unprotected concrete filled hollow steel sections . 65
Protected concrete filled hollow steel sections . 65
8 Advanced design methods . 66
General . 66
Thermal analysis . 66
Mechanical analysis . 66
Validation . 67
9 Detailing . 67
General . 67
Composite beams . 68
Composite beams comprising steel beams with partial encasement . 68
Composite shallow floor beams . 69
Composite columns . 70
Composite columns comprising partially encased steel sections . 70
Composite columns comprising concrete filled hollow sections . 71
Connections between composite beams and columns . 72
General . 72
Connections between composite beams and composite columns comprising steel
sections encased in concrete . 73
Connections between composite beams and composite columns with partially
encased steel sections . 73
Connections between composite beams and composite columns comprising con
...