prEN 15254-3

SLOVENSKI STANDARD
01-junij-2026
Razširjena uporaba rezultatov preskusov požarne odpornosti - Nenosilne stene -
3. del: Lahke predelne stene
Extended application of results from fire resistance tests - Non-loadbearing walls - Part
3: Lightweight partitions
Erweiterter Anwendungsbereich der Ergebnisse von Feuerwiderstandsprüfungen -
Nichttragende Wände - Teil 3: Leichte Trennwände
Application étendue des résultats d’essais de résistance au feu - Murs non porteurs -
Partie 3: Cloisons légères
Ta slovenski standard je istoveten z: prEN 15254-3
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
April 2026
ICS 91.060.10 Will supersede EN 15254-3:2019
English Version
Extended application of results from fire resistance tests -
Non-loadbearing walls - Part 3: Lightweight partitions
Application étendue des résultats d'essais de Erweiterter Anwendungsbereich der Ergebnisse von
résistance au feu - Murs non porteurs - Partie 3: Feuerwiderstandsprüfungen - Nichttragende Wände -
Cloisons légères Teil 3: Leichte Trennwände
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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15254-3:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principles . 6
4.1 General principles . 6
4.2 Use of test evidence . 7
4.2.1 General. 7
4.2.2 Use of additional test evidence . 7
5 General rules . 7
5.1 Fire performance classification . 7
5.2 Combination of extended application rules . 7
5.3 Reference test . 7
5.3.1 General. 7
5.3.2 Overrun time . 7
5.3.3 Maximum deflection . 8
6 Specific changes to the components of the lightweight partition wall . 8
6.1 Lining . 8
6.1.1 Exchange of lining . 8
6.1.2 Thickness of lining. 10
6.1.3 Number of layers of boards . 10
6.1.4 Dimensions of the boards . 10
6.1.5 Board orientation . 10
6.1.6 Position of the layers of boards when different boards are used . 10
6.2 Steel framework . 10
6.2.1 General. 10
6.2.2 Shape of the steel profiles . 10
6.2.3 Nominal steel profiles depth (web) . 11
6.2.4 Nominal steel profiles width (flange) . 11
6.2.5 Stud spacing . 11
6.2.6 Double steel framework . 11
6.3 Mineral wool . 11
6.3.1 General. 11
6.3.2 Addition of mineral wool . 12
6.3.3 Removal of mineral wool . 12
6.3.4 Exchange of mineral wool . 12
6.3.5 Tested density within the tolerances declared by the manufacturer . 12
6.3.6 Thickness . 12
6.4 Lightweight partition wall (system) . 12
6.4.1 Height . 12
6.4.2 Width . 13
Bibliography . 14
European foreword
This document (prEN 15254-3:2026) 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 15254-3:2019.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
1 Scope
This document provides guidance and, where appropriate, defines procedures for variations of certain
parameters and factors associated with the design of lightweight partition walls, which have been tested
in accordance with EN 1364-1, and classified according to EN 13501-2.
This document only applies to non-loadbearing lightweight partition walls which have been tested (=
reference test) with a single steel framework, provided with a lining on both sides of the steel framework.
The lightweight partition wall cavity can be insulated or not with a mineral wool.
This document does not apply to any other types of non-loadbearing lightweight partition walls
considered in EN 1364-1.
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 14195, Metal framing components for gypsum board systems — Definitions, requirements and test
methods
EN 13162, Thermal insulation products for buildings — Factory made mineral wool (MW) products —
Specification
EN 15725, Extended application reports on the fire performance of construction products and building
elements: Principle of EXAP standards and EXAP reports
EN 1363-1, Fire resistance tests — Part 1: General Requirements
EN 1363-2, Fire resistance tests — Part 2: Alternative and additional procedures
EN 1364-1, Fire resistance tests for non-loadbearing elements — Part 1: Walls
EN 13501-2, Fire classification of construction products and building elements — Part 2: Classification
using data from fire resistance/and or smoke control tests, excluding ventilation services
EN 1090-1, Execution of steel structures and aluminium structures — Part 1: Requirements for conformity
assessment of structural components
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1363-1, EN 1363-2, EN 1364-1,
EN 15725 and EN 13501-2, together with the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1
lightweight partition wall
non-loadbearing wall that comprises a steel framework, provided with a lining on both sides of the steel
framework
Note 1 to entry: The lightweight partition wall cavity can be insulated or not with a mineral wool.
3.2
fire performance classification
classification of the lightweight partition wall in accordance with EN 13501-2 with only taking into
account the E and/or EI-classification
3.3
lining
layer(s) of boards fixed at each side to the steel framework of the lightweight partition wall
3.4
board
product with an A1 or A2 classification according to EN 13501-1 of rectangular shape and cross-section
in which the thickness is uniform (excluding edge profiles) and substantially smaller than the other
dimensions, and where the product is covered by a Technical Specification as defined in the Construction
Product Regulation (CPR)
3.5
mineral wool
mineral wool as specified in EN 13162
3.6
steel framework
framework comprising steel profiles as specified in EN 14195 or in EN 1090-1
3.7
single steel framework
steel framework comprising only one row of steel studs and channels
3.8
double steel framework
steel framework comprising of two adjacent rows of steel studs and channels
3.9
reference test
fire resistance test in accordance with EN 1363-1 (or EN 1363-2 when applicable) and EN 1364-1,
providing primary evidence, on which the extended application is to be based
3.10
additional test evidence
fire resistance test in accordance with EN 1363-1 (or EN 1363-2 when applicable) and EN 1364-1,
providing secondary evidence, on which the extended application is supported
3.11
overrun time
period of fire resistance beyond the intended classification period achieved in the test
Note 1 to entry: The overrun time is expressed in minutes.
3.12
shape of the profiles of the steel framework
type of profile designated by the prefix-letter (e.g. C- or U-shap
...