oSIST prEN 15080-12:2022
(Main)Extended application of results from fire resistance tests - Part 12: Loadbearing masonry walls
Extended application of results from fire resistance tests - Part 12: Loadbearing masonry walls
This European Standard provides guidance, and where appropriate defines procedures, for variations of certain parameters and factors associated with the design of internal and external loadbearing walls that have been tested in accordance with EN 1365-1.
Data from historic standard fire resistance tests may be used as supporting information.
Manufactured stone masonry units according to EN 771-5 and natural stone units according to EN 771-6 are not covered.
This European Standard is not valid for reinforced masonry.
Erweiterter Anwendungsbereich der Ergebnisse von Feuerwiderstandsprüfungen - Teil 12: Tragende Mauerwerkswände
Dieses Dokument gibt eine Anleitung und definiert, falls zutreffend, Verfahren für Änderungen von bestimmten Parametern und Faktoren, die mit der Bemessung von tragenden Innen- und Außenwänden im Zusammenhang stehen und geprüft wurden, siehe EN 1365 1.
Daten aus bereits vorliegenden Feuerwiderstandsprüfungen dürfen als unterstützende Informationen verwendet werden.
Mauersteine aus Beton (siehe EN 771 5) und Mauersteine aus Naturstein (siehe EN 771 6) sind nicht abgedeckt.
Dieses Dokument gilt nicht für bewehrtes Mauerwerk.
Application étendue des résultats des essais de résistance au feu - Partie 12: Murs porteurs en maçonnerie
Le présent document fournit des lignes directrices et, le cas échéant, définit des modes opératoires, pour les variations de certains paramètres et facteurs associés à la conception de murs porteurs intérieurs et extérieurs qui ont été soumis à des essais, voir l’EN 1365 1.
Les données issues d’essais de résistance au feu normalisés historiques peuvent être utilisées comme des informations complémentaires.
Les éléments de maçonnerie en pierre reconstituée en béton (voir l’EN 771 5) et les éléments de maçonnerie en pierre naturelle (voir l’EN 771 6) ne sont pas couverts.
Le présent document ne s’applique pas à la maçonnerie armée.
Razširjena uporaba rezultatov požarne odpornosti - 12. del: Nosilni zidovi
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2022
Razširjena uporaba rezultatov požarne odpornosti - 12. del: Nosilni zidovi
Extended application of results from fire resistance tests - Part 12: Loadbearing masonry
walls
Erweiterter Anwendungsbereich der Ergebnisse von Feuerwiderstandsprüfungen - Teil
12: Tragende Mauerwerkswände
Application étendue des résultats des essais de résistance au feu - Partie 12: Murs
porteurs en maçonnerie
Ta slovenski standard je istoveten z: prEN 15080-12
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
91.060.10 Stene. Predelne stene. Walls. Partitions. Facades
Fasade
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2022
ICS 13.220.50; 91.060.10 Will supersede EN 15080-12:2011
English Version
Extended application of results from fire resistance tests -
Part 12: Loadbearing masonry walls
Application étendue des résultats des essais de Erweiterter Anwendungsbereich der Ergebnisse von
résistance au feu - Partie 12: Murs porteurs en Feuerwiderstandsprüfungen - Teil 12: Tragende
maçonnerie Mauerwerkswände
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 127.
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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15080-12:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 General principles . 5
4.1 General. 5
4.2 Classifications . 6
4.3 Necessary additional information . 6
5 Rules for extended application . 7
5.1 Units . 7
Table 1 – Ranges of unit compressive strength for extrapolation. 9
5.2 Masonry mortars and joints . 9
5.3 Plaster, rendering or external covering . 10
5.4 Load Level . 10
5.5 Geometrical parameters . 11
6 Report of the extended application analysis . 11
Annex A (informative) Recommendations for the installation . 12
A.1 Connection systems for REI walls . 12
A.2 Recesses and chases . 12
Bibliography . 13
European foreword
This document (prEN 15080-12:2022) has been prepared by Technical Committee CEN/TC 127 “Fire
safety in buildings”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 15080-12:2011.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of 89/106/EEC.
1 Scope
This document provides guidance, and where appropriate defines procedures, for variations of certain
parameters and factors associated with the design of internal and external loadbearing walls that have
been tested, see EN 1365-1.
Data from historic standard fire resistance tests may be used as supporting information.
Manufactured stone masonry units (see EN 771-5) and natural stone units (see EN 771-6) are not
covered.
This document is not valid for reinforced masonry.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 771-1, Specification for masonry units — Part 1: Clay masonry units
EN 771-3, Specification for masonry units — Part 3: Aggregate concrete masonry units (Dense and light-
weight aggregates)
EN 772-1, Methods of test for masonry units — Part 1: Determination of compressive strength
EN 998-1:2010, Specification for mortar for masonry — Part 1: Rendering and plastering mortar
EN 1363-1, Fire resistance tests - Part 1: General requirements
EN 1363-2, Fire resistance tests - Part 2: Alternative and additional procedures
EN 1365-1, Fire resistance tests for loadbearing elements - Part 1: Walls
EN 1996-1-1, Eurocode 6 - Design of masonry structures - Part 1-1: General rules for reinforced and
unreinforced masonry structures
EN 1996-1-2:2005, Eurocode 6 - Design of masonry structures - Part 1-2: General rules - Structural fire
design
EN 1996-2, Eurocode 6 - Design of masonry structures - Part 2: Design considerations, selection of materials
and execution of masonry
EN 1996-3:2006, Eurocode 6 - Design of masonry structures - Part 3: Simplified calculation methods for
unreinforced masonry structures
EN 13501-2, Fire classification of construction products and building elements - Part 2: Classification using
data from fire resistance tests, excluding ventilation services
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1996-1-2:2005 and the
following apply.
3.1
unfilled perpend joint
vertical plain joint or joint with tongue and groove, not filled with mortar or adhesive
3.2
utilisation factor
relation between the applied load on the test specimen and the design resistance in the fire situation N
Rd,fi
w
Note 1 to entry: For design resistance see EN 1996-1-1 or EN 1996-3.
3.3
historical data
test data generated by fire resistance tests that have been undertaken by a Notified Test Laboratory
Note 1 to entry: This is in accordance with European and/or former and in accordance with standards.
Note 2 to entry: Previously existing test data are acceptable even though the test may not have been carried out
using the plate thermometer as long as the necessary additional information, (see 4.3) is available. This data can
only be used as described in this European Standard.
Note 3 to entry The temperature-time curve used is based on the one specified in EN 1363-1, which is also defined
in ISO 834.
3.5
moisture content of units
difference between the density of the units at the beginning of the fire test and the gross dry density of
the units, related to the gross dry density of the units, in percent by mass
4 General principles
4.1 General
(1) The fire behaviour of load bearing masonry mainly depends on:
— the masonry unit material - clay, calcium silicate, autoclaved aerated concrete,
dense/lightweight aggregate concrete;
— the type of unit - solid or hollow (type of holes, percentage and direction of holes), shell and web
thickness;
— the unit dimensions;
— the unit gross density;
— the unit compressive strength;
— the type of mortar - general purpose, thin layer or lightweight mortar;
— the type of perpend joint – filled or unfilled perpend joint, especially for unplastered walls;
— the use of finishes;
— the geometrical slenderness of the wall as defined in EN 1996-1-1;
— the level of the applied load;
— eccentricities;
— fire exposure of separating/non separating elements.
(2) For the determination of values by consideration of test results, the interpretation of any existing fire
test results have to be based on the requirements for the relevant test method from EN 1363-1,
EN 1363-2, EN 1364-1, EN 1365-1 or EN 1365-4 respectively.
(3) For the evaluation of use of previously existing data, differences between the test methods, have to
be considered.
NOTE Differences to be considered are for example material properties, specimen dimensions, utilization
factor based on maximum loading, eccentricities, etc.
(4) To establish the extended application, the rules given in Clause 5 shall be followed for each of the
given parameters.
(5) Extrapolations exceeding the rules of this European Standard are possible, provided that tests give
evidence to do so. Such extrapolations have to be specified in the report, see Clause 6.
4.2 Classifications
(1) All the given rules are always valid for the same classification.
(2) Extrapolation is possible for different wall thicknesses and geometries, different unit densities,
compressive strengths, perforation patterns and sizes, different types of masonry mortar, different
types of external covering, different load levels and eccentricities.
(3) An extrapolation for higher fire resistances or from REI tests to REI-M or R is not possible.
NOTE 1 In some cases, there are different extended application rules given for the classifications R, REI and REI-
M.
NOTE 2 In addition, the rules given in this document for REI tests also apply for RE and REW tests.
4.3 Necessary additional information
For the classification according to these extended application rules additional information on material
properties and additional measurements during the test procedure according to EN 1363-1, EN 1363-2,
EN 1364-1, EN 1365-1, EN 1365-4 or historic standard fire test methods are necessary:
— measurement of the deflection of the test specimen at least in mid height, to allow for an
extrapolation for height, see 5.5 (1);
— gross density, compressive strength and moisture content of the units;
— percentage of voids, web and shell thickness (parallel and perpendicular to the wall surface, if
applicable) and combined thickness (at least for webs and shells perpendicular to the wall surface)
for perforated units;
— gross density and compressive strength of the masonry mortar;
— thickness of unfilled perpend joints in unplastered or unrendered walls;
— thickness and type of plaster or render in rendered walls;
— gross density and moisture content of the plaster;
— type and thickness of applied thermal insulation material (if applicable);
— gross density and moisture of the insulation material (if applicable);
— measurement of applied load on the test specimens;
— determination of the utilization factor μ / α , applied standard for the determination of the
0 fi
utilization factor in the next report, f.e. EN 1996-1-1 (with national annex, if applicable).
The measurement of the temperature within the test specimen at least in mid-height across the wall
thickness is advised to allow for a future calculation of fire resistances according to EN 1996-1-2.
Thermocouples should be placed at least in depths of 10 mm, 30 mm and 50 mm from the exposed
side and then every 50 mm.
5 Rules for extended application
5.1 Un
...
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