EN 1996-1-2:2005
(Main)Eurocode 6 - Design of masonry structures - Part 1-2: General rules - Structural fire design
Eurocode 6 - Design of masonry structures - Part 1-2: General rules - Structural fire design
(1)P This Part 1-2 of EN 1996 deals with the design of masonry structures for the accidental situation of fire exposure, and is intended to be used in conjunction with EN 1996-1-1, EN 1996-2, 1996-3 and EN 1991-1-2. This part 1-2 only identifies differences from, or supplements to, normal temperature design.
(2)P This Part 1-2 deals only with passive methods of fire protection. Active methods are not covered.
(3)P This Part 1-2 applies to masonry structures which, for reasons of general fire safety, are required to fulfil certain functions when exposed to fire, in terms of:
- avoiding premature collapse of the structure (load bearing function)
- limiting fire spread (flames, hot gases, excessive heat) beyond designated areas (separating function)
(4)P This Part 1-2 gives principles and application rules for designing structures for specified requirements in respect of the aforementioned functions and levels of performance.
(5)P This Part 1-2 applies to structures, or parts of structures, that are within the scope of EN 1996-1-1, EN 1996-2 and EN 1996-3 and are designed accordingly.
(6)P This Part 1-2 does not cover masonry built with Natural Stone units to EN771-6
(7)P This Part 1-2 deals with the following:
- non-loadbearing internal walls.
- non-loadbearing external walls.
- loadbearing internal walls with separating or non-separating functions.
- loadbearing external walls with separating or non-separating functions.
Eurocode 6 - Bemessung und Konstruktion von Mauerwerksbauten - Allgemeine Regeln -Teil 1-2: Tragwerksbemessung für den Brandfall
Eurocode 6 - Calcul des ouvrages en maçonnerie - Partie 1-2: Règles générales - Calcul du comportement au feu
Les États Membres de l’UE et de l’AELE reconnaissent que les Eurocodes servent de documents de référence pour les usages suivants :
comme moyen de prouver la conformité des bâtiments et des ouvrages de génie civil aux exigences essentielles de la Directive du Conseil 89/106/CEE, en particulier à l’Exigence Essentielle N° 1 Stabilité et résistance mécanique et à l’Exigence Essentielle N° 2 Sécurité en cas d’incendie ;
comme base de spécification des contrats pour les travaux de construction et les services techniques associés ;
comme cadre d’établissement de spécifications techniques harmonisées pour les produits de construction (EN et ATE).
Les Eurocodes, dans la mesure où ils concernent les ouvrages eux-mêmes, ont une relation directe avec les Documents Interprétatifs visés à l’Article 12 de la DPC, bien qu’ils soient d’une nature différente de celle des normes harmonisées de produits . En conséquence, les aspects techniques résultant des travaux effectués pour les Eurocodes nécessitent d’être pris en considération de façon adéquate par les Comités techniques du CEN et/ou les groupes de travail de l’EOTA travaillant sur les normes de produits en vue de parvenir à une complète compatibilité de ces spécifications techniques avec les Eurocodes.
Les normes Eurocodes fournissent des règles de conception structurale communes d’usage quotidien pour le calcul de structures entières et des produits composants de nature traditionnelle ou innovatrice. Les formes de construction ou les conceptions inhabituelles ne sont pas spécifiquement couvertes, et il appartiendra en ce cas au concepteur de se procurer des bases spécialisées supplémentaires.
Evrokod 6: Projektiranje zidanih konstrukcij – 1-2 del: Splošna pravila – Požarnoodporno projektiranje
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Eurocode 6 - Design of masonry structures - Part 1-2: General rules - Structural fire designEvrokod 6: Projektiranje zidanih konstrukcij – 1-2 del: Splošna pravila – Požarnoodporno projektiranjeEurocode 6 - Calcul des ouvrages en maçonnerie - Partie 1-2: Regles générales - Calcul du comportement au feuEurocode 6 - Bemessung und Konstruktion von Mauerwerksbauten - Allgemeine Regeln -Teil 1-2: Tragwerksbemessung für den BrandfallTa slovenski standard je istoveten z:EN 1996-1-2:2005SIST EN 1996-1-2:2005en91.080.30Zidane konstrukcijeMasonry91.010.30Technical aspects13.220.50Požarna odpornost gradbenih materialov in elementovFire-resistance of building materials and elementsICS:SIST ENV 1996-1-3:2004SIST ENV 1996-1-2:20041DGRPHãþDSLOVENSKI
STANDARDSIST EN 1996-1-2:200501-oktober-2005
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1996-1-2
May 2005 ICS 13.220.50; 91.010.30; 91.080.30 Supersedes ENV 1996-1-2:1995 English version
Eurocode 6 - Design of masonry structures - Part 1-2: General rules - Structural fire design
Eurocode 6 - Calcul des ouvrages en maçonnerie - Partie 1-2: Règles générales - Calcul du comportement au feu
Eurocode 6 - Bemessung und Konstruktion von Mauerwerksbauten - Teil 1-2: Allgemeine Regeln - Tragwerksbemessung für den Brandfall This European Standard was approved by CEN on 4 November 2004.
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. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists 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 Central Secretariat has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2005 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1996-1-2:2005: E
EN1996-1-2:2005
2 Contents Page Foreword.4 Background of the Eurocode programme.4 Status and field of application of Eurocodes.5 National Standards implementing Eurocodes.6 Links between Eurocodes and products harmonised technical specifications (ENs and ETAs).6 Additional information specific to EN 1996-1-2.7 National Annex for EN 1996-1-2.9 Section 1. General.9 1.1 Scope.9 1.2 Normative references.10 1.3 Assumptions.11 1.4 Distinction between Principles and application Rules.11 1.5 Definitions.11 1.5.1 Special terms relating to fire design in general.12 1.5.2 Special terms relating to calculation methods.13 1.6 Symbols.13 Section 2. Basic principles and rules.15 2.1 Performance requirement.15 2.1.1 General.15 2.1.2 Nominal fire exposure.15 2.1.3 Parametric fire exposure.16 2.2 Actions.16 2.3 Design values of material properties.16 2.4 Assessment methods.17 2.4.1 General.17 2.4.2
Member analysis.18 2.4.3 Analysis of part of the structure.20
EN1996-1-2: 2005
3 2.4.4 Global structural analysis.20 Section 3.
Materials.20 3.1 Units.20 3.2 Mortar.20 3.3 Mechanical properties of masonry.20 3.3.1 Mechanical properties of masonry at normal temperature.20 3.3.2 Strength and deformation properties of masonry at elevated temperature.21 3.3.2.1 General.21 3.3.2.2 Unit mass.21 3.3.3 Thermal properties.21 3.3.3.1 Thermal elongation.21 3.3.3.2 Specific heat capacity.21 3.3.3.3 Thermal conductivity.21 Section 4. Design Procedures for obtaining Þre resistance of masonry walls.21 4.1 General information on the design of walls.21 4.1.1 Wall types by function.21 4.1.2 Cavity walls and untied walls comprising independent leaves.22 4.2 Surface finishes – rendering mortar and plaster.24 4.3 Additional requirements for masonry walls.24 4.4 Assessment by testing.24 4.5 Assessment by tabulated data.25 4.6 Assessment by calculation.25 Section 5. Detailing.25 5.1 General.25 5.2 Junctions and joints.26 5.3 Fixtures, pipes and cables.26 Annex A (Informative) Guidance on selection of fire resistance periods.28 Annex B (Normative) Tabulated fire resistance of masonry walls.29 Annex C (Informative)
Simplified calculation model.63 Annex D (Informative)
Advanced calculation method.71 Annex E (Informative)
Examples of connections that meet the requirements of Section 5.78
EN1996-1-2:2005
4 Foreword
This document (EN 1996-1-2:2005) has been prepared by Technical Committee CEN/TC 250 "Structural Eurocodes", the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2005 and conflicting national standards shall be withdrawn at the latest by March 2010. This document supersedes ENV 1996-1-2:1995. CEN/TC 250 is responsible for all Structural Eurocodes. Background of the Eurocode programme In 1975, the Commission of the European Community decided on an action programme in the field of construction, based on article 95 of the Treaty. The objective of the programme was the elimination of technical obstacles to trade and the harmonisation of technical specifications. Within this action programme, the Commission took the initiative to establish a set of harmonised technical rules for the design of construction works which, in a first stage, would serve as an alternative to the national rules in force in the Member States and, ultimately, would replace them.
For fifteen years, the Commission, with the help of a Steering Committee with Representatives of Member States, conducted the development of the Eurocodes programme, which led to the first generation of European codes in the 1980’s.
In 1989, the Commission and the Member States of the EU and EFTA decided, on the basis of an agreement1 between the Commission and CEN, to transfer the preparation and the publication of the Eurocodes to the CEN through a series of Mandates, in order to provide them with a future status of European Standard (EN). This links de facto the Eurocodes with the provisions of all the Council’s Directives and/or Commission’s Decisions dealing with European standards (e.g. the Council Directive 89/106/EEC on construction products - CPD - and Council Directives 93/37/EEC, 92/50/EEC and 89/440/EEC on public works and services and equivalent EFTA Directives initiated in pursuit of setting up the internal market). The Structural Eurocode programme comprises the following standards generally consisting of a number of Parts: EN 1990 Eurocode : Basis of Structural 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 structures
1 Agreement between the Commission of the European Communities and the European Committee for Standardisation (CEN) concerning the work on EUROCODES for the design of building and civil engineering works (BC/CEN/03/89).
EN1996-1-2: 2005
5 EN 1995 Eurocode 5: Design of timber structures EN 1996 Eurocode 6: Design of masonry structures EN 1997 Eurocode 7: Geotechnical design EN 1998 Eurocode 8: Design of structures for earthquake resistance EN 1999 Eurocode 9: Design of aluminium structures
Eurocode standards recognise the responsibility of regulatory authorities in each Member State and have safeguarded their right to determine values related to regulatory safety matters at national level where these continue to vary from State to State. Status and field of application of Eurocodes The Member States of the EU and EFTA recognise that EUROCODES serve as reference documents for the following purposes: - as a means to prove compliance of building and civil engineering works with the essential requirements of Council Directive 89/106/EEC, particularly Essential Requirement N°1 – Mechanical resistance and stability – and Essential Requirement N°2 – Safety in case of fire; - as a basis for specifying contracts for construction works and related engineering services; - as a framework for drawing up harmonised technical specifications for construction products (ENs and ETAs) The Eurocodes, as far as they concern the construction works themselves, have a direct relationship with the Interpretative Documents2 referred to in Article 12 of the CPD, although they are of a different nature from harmonised product standards3. Therefore, technical aspects arising from the Eurocodes work need to be adequately considered by CEN Technical Committees and/or EOTA Working Groups working on product standards with a view to achieving full compatibility of these technical specifications with the Eurocodes. The Eurocode standards provide common structural design rules for everyday use for the desi
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