oSIST prEN 13381-5:2008

Test methods for determining the contribution to the fire resistance of structural members - Part 5: Applied protection to concrete/profiled sheet steel composite member

This specifies the test methods for determining the contribution to the fire resistance of structural members for applied protection to concrete/profiled sheet steel composite members.

Prüfverfahren zur Bestimmung des Beitrages zum Feuerwiderstand von tragenden Bauteilen - Teil 5: Brandschutzmaßnahmen für profilierte Stahlblech/Beton-Verbundkonstruktionen

Diese Europäische Norm legt ein Prüfverfahren zur Bestimmung des Beitrags von Brand¬schutzsystemen zur Feuer¬widerstandsfähigkeit von tragenden profilierten Stahlblech/Beton-Verbundkonstruktionen oder Verbund¬platten fest. Der Beton kann Leichtbeton, Normalbeton oder Schwerbeton der Festigkeitsklassen 20/25 (LC/C/HC) bis 50/60 (LC/C/HC) sein.
Das Prüfverfahren gilt für alle Brandschutzsysteme, die für den Schutz der tragenden Verbundkonstruktionen oder -platten verwendet werden und beinhaltet aufgesprühte Brandschutzmaterialien, Bekleidungen, Beschichtungsschutzsysteme sowie Mehrschicht- oder Verbundsysteme.
Das Prüfverfahren und sein Beurteilungsverfahren sind so ausgelegt, dass eine direkte Anwendung der Ergebnisse möglich ist, um einen Bereich von Dicken des aufgebrachten Brandschutzmaterials abzudecken.
Das Prüfverfahren gilt nur für Brandschutzsysteme, die direkt auf der Unterseite der Stahlblech/Beton-Verbundkonstruktion oder Verbundplatte befestigt sind. Brandschutzsysteme, bei denen das Brand¬schutz¬material nicht direkt auf der Verbundkonstruktion befestigt ist und bei denen dadurch ein durchgehender Hohlraum zwischen der Stahlblech/Beton-Verbundkonstruktion und dem Brandschutzsystem von mehr als 5 mm entsteht, werden in prEN 13381-1 behandelt.
Diese Europäische Norm beinhaltet die Brandprüfung, die durchgeführt werden muss, um die Fähigkeit des Brandschutzsystems zusammenhängend und mit der Verbundkonstruktion fest verbunden zu bleiben, zu bestimmen und um Messwerte für die Temperaturen des Stahlblechs über die gesamte Tiefe des Betons (für erweiterte Anwendungszwecke) und die unbeflammte Oberfläche des Betons zu liefern, wenn diese der Einheits-Temperaturzeitkurve nach den hier definierten Verfahren ausgesetzt werden.

Méthodes d'essai pour déterminer la contribution à la résistance au feu des éléments de construction - Partie 5: Protection appliquée aux dalles mixtes béton/tôle d'acier profilée

La présente Norme européenne spécifie une méthode d'essai permettant de déterminer la contribution apportée par les systèmes de protection contre le feu à la résistance au feu des éléments ou dalles de construction mixtes béton/tôle d'acier profilé. Le béton peut être de type léger, normal ou compact et appartenir aux classes de résistance aux contraintes 20/25 (LC/C/HC) à 50/60 (LC/C/HC).
La méthode d'essai est applicable à tous les systèmes de protection contre le feu utilisés pour protéger ces éléments ou dalles de construction mixtes et englobe les matériaux de protection contre le feu appliqués par pulvérisation, les revêtements, les systèmes de protection en plaque et les matériaux de protection contre le feu multicouches ou mixtes.
La méthode d'essai et sa procédure d'évaluation sont conçues pour permettre l'application directe des résultats à une gamme d'épaisseurs du matériau de protection contre le feu.
La méthode d'essai est seulement applicable aux systèmes de protection contre le feu qui sont fixés directement sur la face inférieure de l'élément ou dalle mixte béton/acier. Les systèmes dans lesquels le matériau de protection contre le feu n'est pas fixé directement sur l'élément mixte, entraînant la présence d'une cavité continue, mesurant plus de 5 mm, entre l'élément mixte béton/acier et le système de protection contre le feu, constituent l'objet du prEN 13381-1.
La présente Norme européenne contient l'essai au feu, qui spécifie les essais qui doivent être effectués pour déterminer l'aptitude du système de protection contre le feu à rester cohérent et fixé sur l'élément mixte, et pour obtenir des données concernant les températures de la tôle d'acier, dans toute l'épaisseur du béton pour des extensions d'application et sur la surface du béton non exposée, lorsque cet élément est exposé au feu suivant la courbe de température/temps normalisée, conformément aux procédures définies dans le présent document.

Preskusne metode za ugotavljanje prispevka k požarni odpornosti konstrukcijskih elementov - 5. del: Zaščita kompozitnih elementov iz betona in jeklene profilirane pločevine

General Information

• Status: Not Published
• Public Enquiry End Date: 14-Jan-2009
• ICS: 13.220.50 - Fire-resistance of building materials and elements
• ICS: 91.080.01 - Structures of buildings in general
• Technical Committee: POZ - Požarna varnost
• Current Stage: 98 - Abandoned project (Adopted Project)
• Start Date: 02-Jun-2020
• Due Date: 07-Jun-2020
• Completion Date: 02-Jun-2020
• 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
• Directive: 89/106/EEC - Construction products
• Mandate: M/117 - Horizontal complement to the mandates to CEN/CENELEC concerning the execution of standardization work for the valuation of construction products and elements in respect of their resistance to fire
• Ref Project: prEN 13381-5 - Test methods for determining the contribution to the fire resistance of structural members - Part 5: Applied protection to concrete/profiled sheet steel composite member

Relations

• Revised: SIST ENV 13381-5:2003 - Test methods for determining the contribution to the fire resistance of structural members - Part 5: Applied protection to concrete/profiled sheet steel composite members
• Effective Date: 08-Jun-2022
• Revised: SIST ENV 13381-5:2003 - Test methods for determining the contribution to the fire resistance of structural members - Part 5: Applied protection to concrete/profiled sheet steel composite members
• Effective Date: 01-Dec-2008

Overview

The oSIST prEN 13381-5:2008:2008 standard, developed by CEN under Technical Committee CEN/TC 127, provides test methods for determining the contribution to the fire resistance of structural members-specifically focused on applied fire protection systems for concrete/profiled sheet steel composite members. This standard specifies the procedures to test fire protection materials such as sprayed fire protection, coatings, claddings, and multi-layer systems applied directly to the underside of these composite structural elements.

Fire resistance is a critical factor in building safety, and oSIST prEN 13381-5:2008:2008 offers a rigorous framework to evaluate how applied fire protection enhances the durability and integrity of composite slabs under fire conditions. The standard supports essential requirements of European directive 89/106/EEC and supersedes ENV 13381-5:2002.

Key Topics

• Scope and Applicability
  Applicable to concrete/profiled steel composite members with concrete types ranging from lightweight to heavyweight and strength classes 20/25 to 50/60.
  Focus is on fire protection systems fixed directly to the composite member without a continuous cavity larger than 5 mm.

• Test Setup and Procedures
  Includes detailed instructions for preparing test specimens:

  • Construction of composite slabs
  • Application of fire protection systems
  • Conditioning and instrumentation of specimens with thermocouples, deformation, and load sensors
  • Use of standard temperature/time fire curves and optional smouldering fire tests for reactive fire protection materials (Annex A).

• Measurement and Data Collection
  Emphasis on monitoring furnace temperature, specimen temperatures at various depths, deformation, applied load, and other parameters to assess fire protection performance during exposure.

• Assessment and Reporting
  Defines how to interpret test data to determine fire resistance contributions and provides guidance for interpolating results to different thicknesses and material configurations.
  Includes limits of applicability, enabling adaptation of test results to varying steel types, concrete densities, and thicknesses.

• Safety Considerations
  Highlights safety risks during testing due to toxic smoke and operational hazards, mandating risk assessments, safety measures, and personnel training.

Applications

• Fire Safety Design
  Essential for engineers and fire safety professionals to evaluate the effectiveness of fire protection systems on composite concrete/steel slabs in commercial and residential buildings.

• Regulatory Compliance
  Supports compliance with European fire safety directives and building codes requiring certified fire resistance data for structural members.

• Material Development and Testing
  Useful for manufacturers developing and validating new fire protection products tailored for composite structural elements.

• Structural Engineering Analysis
  Provides fire resistance data that can be directly applied to calculate structural behavior during fire events following EN 1994-1-2 guidelines.

Related Standards

• prEN 13381-1 - Test methods for fire protection systems not fixed directly to the composite member, addressing cavity fire protection.
• prEN 13381-3 & prEN 13381-4 - For applied protection methods on pure concrete and steel members respectively.
• prEN 13381-6 & prEN 13381-7 - Cover applied protection to concrete-filled hollow steel composite columns and timber members.
• EN 1994-1-2 - Eurocode for fire design of composite steel and concrete structures; referenced for calculation using test data.

By following oSIST prEN 13381-5:2008:2008, stakeholders can ensure tested fire protection systems reliably improve the fire resistance of concrete/profiled sheet steel composite members, thereby enhancing building resilience and occupant safety.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2008
3UHVNXVQHPHWRGH]DXJRWDYOMDQMHSULVSHYNDNSRåDUQLRGSRUQRVWLNRQVWUXNFLMVNLK
HOHPHQWRYGHO=DãþLWDNRPSR]LWQLKHOHPHQWRYL]EHWRQDLQMHNOHQHSURILOLUDQH
SORþHYLQH
Test methods for determining the contribution to the fire resistance of structural members
- Part 5: Applied protection to concrete/profiled sheet steel composite member
Prüfverfahren zur Bestimmung des Beitrages zum Feuerwiderstand von tragenden
Bauteilen - Teil 5: Brandschutzmaßnahmen für profilierte Stahlblech/Beton-
Verbundkonstruktionen
Méthodes d'essai pour déterminer la contribution à la résistance au feu des éléments de
construction - Partie 5: Protection appliquée aux dalles mixtes béton/tôle d'acier profilée
Ta slovenski standard je istoveten z: prEN 13381-5
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2008
ICS Will supersede ENV 13381-5:2002
English Version
Test methods for determining the contribution to the fire
resistance of structural members - Part 5: Applied protection to
concrete/profiled sheet steel composite member
Méthodes d'essai pour déterminer la contribution à la Prüfverfahren zur Bestimmung des Beitrages zum
résistance au feu des éléments de construction - Partie 5: Feuerwiderstand von tragenden Bauteilen - Teil 5:
Protection appliquée aux dalles mixtes béton/tôle d'acier Brandschutzmaßnahmen für profilierte Stahlblech/Beton
profilée Verbundkonstruktionen
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 Management Centre has the
same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland 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
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13381-5:2008: E
worldwide for CEN national Members.

Contents Page
Foreword. 4
1 Scope. 5
2 Normative references. 5
3 Terms and definitions, symbols and units. 6
3.1 Terms and definitions. 6
3.2 Symbols and units . 7
4 Test equipment. 8
4.1 General. 8
4.2 Furnace. 8
4.3 Loading equipment. 8
5 Test conditions. 8
5.1 General. 8
5.2 Support and restraint conditions . 9
5.2.1 Standard conditions. 9
5.2.2 Other support and restraint conditions. 9
5.3 Loading conditions. 9
6 Test specimens. 10
6.1 Number of test specimens . 10
6.2 Size of test specimens. 10
6.3 Construction of test specimens . 10
6.3.1 Construction of concrete/steel composite test slabs . 10
6.3.2 Fabrication of concrete/steel composite slab test members . 11
6.3.3 Application of the fire protection system to the composite test slab . 11
6.4 Composition of test specimen component materials . 12
6.4.1 Profiled steel sheet. 12
6.4.2 Concrete. 12
6.4.3 Steel reinforcement. 12
6.4.4 Fire protection system. 12
6.5 Properties of test materials. 13
6.5.1 General. 13
6.5.2 Concrete. 13
6.5.3 Steel. 13
6.5.4 Fire protection material . 13
6.6 Verification of the test specimen. 14
7 Installation of the test construction. 14
8 Conditioning of the test construction. 14
9 Application of instrumentation. 14
9.1 General. 14
9.2 Instrumentation for measurement of furnace temperature . 14
9.3 Instrumentation for measurement of test specimen temperature . 15
9.3.1 General. 15
9.3.2 Mandatory thermocouples. 15
9.3.3 Optional thermocouples. 15
9.4 Instrumentation for measurement of pressure. 15
9.5 Instrumentation for measurement of deformation . 15
9.6 Instrumentation for measurement of applied load . 16
10 Test procedure. 16
10.1 General. 16
10.2 Furnace temperature and pressure. 16
10.3 Application and control of load . 16
10.4 Temperature of test specimen. 16
10.5 Deformation. 16
10.6 Observations. 16
10.7 Termination of test. 16
11 Test results. 17
11.1 Acceptability of test results . 17
11.2 Presentation of test results. 17
12 Test report. 18
13 Assessment. 18
13.1 General. 18
13.2 Profiled steel sheet temperature . 19
13.3 Equivalent thickness of concrete. 19
13.4 Limiting exposure time. 19
13.5 Insulation. 20
14 Report of the assessment . 20
15 Limits of applicability of the results of the assessment. 21
Annex A (normative) Test method to the smouldering fire or slow heating curve . 28
A.1 Introduction. 28
A.2 Test conditions. 28
A.3 Termination of the test . 29
A.4 Evaluation of the results . 29
Annex B (normative) Measurement of properties of fire protection materials . 31
B.1 General. 31
B.2 Thickness of fire protection materials. 31
B.3 Density of applied fire protection materials. 32
B.4 Moisture content of applied fire protection materials. 32
Bibliography . 34

Foreword
This document (prEN 13381-5:2008) 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 ENV 13381-5:2002.
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.
This European Standard is one of a series of standards for evaluating the contribution to the fire
resistance of structural members by applied fire protection materials. Other parts of this standard are:
Part 1: Horizontal protective membranes.
Part 2: Vertical protective membranes.
Part 3: Applied protection to concrete members.
Part 4: Applied protection to steel members.
Part 6: Applied protection to concrete filled hollow steel composite columns.
Part 7: Applied protection to timber members.
Annexes A and B are normative.
Caution
The attention of all persons concerned with managing and carrying out this fire resistance test, is
drawn to fact that fire testing can be hazardous and that there is a possibility that toxic and/or harmful
smoke and gases can be evolved during the test. Mechanical and operational hazards can also arise
during the construction of test elements or structures, their testing and the disposal of test residues.
An assessment of all potential hazards and risks to health shall be made and safety precautions shall
be identified and provided. Written safety instructions shall be issued. Appropriate training shall be
given to relevant personnel. Laboratory personnel shall ensure that they follow written safety
instructions at all times.
The specific health and safety instructions contained within this Standard shall be followed.

1 Scope
This European Standard specifies a test method for determining the contribution of fire protection
systems to the fire resistance of structural concrete/profiled sheet steel composite members or slabs.
The concrete can be lightweight, normal-weight or heavy-weight concrete and of strength classes
20/25 (LC/C/HC) to 50/60 (LC/C/HC).
The method is applicable to all fire protection systems used for the protection of such structural
composite members or slabs and includes sprayed fire protection, coatings, cladding protection
systems and multi-layer or composite fire protection materials.
The test method and its assessment procedure are designed to permit direct application of the results
to cover a range of thicknesses of the applied fire protection material.
The test method is only applicable to fire protection systems which are fixed directly to the underside
of the concrete/steel composite member or slab. Fire protection systems where the fire protection
material is not attached directly to the composite member, leading to a continuous cavity between the
concrete/steel composite member and the fire protection system of size greater than 5 mm is the
subject of prEN 13381-1.
This European Standard contains the fire test which specifies the tests which shall be carried out to
determine the ability of the fire protection system to remain coherent and fixed to the composite
member and to provide data on the temperatures of the steel sheet, throughout the depth of the
concrete (for extended application purposes) and the unexposed surface of the concrete, when
exposed to the standard temperature/time curve according to the procedures defined herein.
In special circumstances, where specified in national building regulations, there can be a need to
subject reactive protection material to a smouldering curve. The test for this and the special
circumstances for its use are detailed in Annex A.
The fire test methodology makes provision for the collection and presentation of data which can be
used as direct input to the calculation of fire resistance of concrete/steel composite members in
accordance with the procedures given in EN 1994-1-2.
This European Standard also contains the assessment which prescribes how the analysis of the test
data shall be made and gives guidance to the procedures by which interpolation shall be undertaken.
The limits of applicability of the results of the assessment arising from the fire test are defined,
together with permitted direct application of the results to different steel/concrete composite
structures, steel types and thicknesses, concrete densities, strengths, thicknesses and production
techniques over the range of thicknesses of the applied fire protection system tested.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publica-
tions. These normative references are cited at the appropriate places in the text, and the publications
are listed hereafter. For dated references, subsequent amendments to or revisions of any of these
publications apply to this European Standard only when incorporated in it by amendment or revision.
For undated references the latest edition of the publication referred to applies (including
amendments).
EN 1363-1, Fire resistance tests – Part 1: General requirements
EN 1363-2, Fire resistance tests – Part 2: Alternative and additional procedures
EN 206-1, Concrete – Part 1: Specification, performance, production and conformity
EN 10080, Steel for the reinforcement of concrete – Weldable ribbed reinforcing steel B 500 –
Technical delivery conditions for bars, coils and welded fabric
EN 10147, Continuously hot-dip zinc coated structural steels strip and sheet – Technical delivery
conditions
EN 1992-1-1, Eurocode 2: Design of concrete structures – Part 1-1: General rules and rules for
buildings
EN 1994-1-1:1, Eurocode 4: Design of composite steel and concrete structures –
Part 1-1: General rules and rules for buildings
ISO 8421-2, Fire Protection – Vocabulary – Part 2: Structural fire protection
EN ISO 13943, Fire safety – Vocabulary (ISO 13943:1999)
3 Terms and definitions, symbols and units
3.1 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN 1363-1,
EN ISO 13943, ISO 8421-2 and EN 206-1, together with the following, apply.
3.1.1
concrete/steel composite member or slab (generally referred to as slab)
element of building construction which is loadbearing and is fabricated from a profiled steel sheet
lower surface, defined according to EN 10147, and a concrete upper layer, defined according to
EN 206-1. It may contain steel reinforcing bars
3.1.2
fire protection material
any material or combination of materials applied to the surface of a concrete/steel composite slab for
the purpose of increasing its fire resistance
3.1.3
passive fire protection materials
materials which do not change their physical form on heating, providing fire protection by virtue of
their physical or thermal properties. They may include materials containing water which, on heating,
evaporates to produce cooling effects
3.1.4
reactive fire protection materials
materials which are specifically formulated to provide a chemical reaction upon heating such that their
physical form changes and in so doing provides fire protection by thermal insulative and cooling
effects
3.1.5
fire protection system
fire protection material together with a prescribed method of attachment to the structural
concrete/steel composite slab
3.1.6
fire protection
protection afforded to the concrete/steel composite slab by the fire protection system such that the
temperature throughout the depth of the structural slab and upon any steel reinforcing bars within it is
limited throughout the period of exposure to fire
3.1.7
test specimen
concrete/steel composite test slab plus the fire protection system under test
3.1.8
fire protection thickness
thickness of a single layer fire protection system or combined thickness of all layers of a multilayer fire
protection system
3.1.9
stickability
ability of a fire protection material to remain sufficiently coherent and in position for a well defined
range of deformations, and furnace and test specimen surface temperatures, such that its ability to
provide fire protection is not significantly impaired
3.1.10
equivalent thickness of concrete
theoretical thickness of concrete which provides the same thermal insulation for a given period of test
as does the given thickness of the applied fire protection system
3.1.11
limiting exposure time
time at which the adherence of a fire protection system to the concrete/steel composite test slab can
be no longer considered acceptable, as indicated by a defined, significant increase in maximum
recorded temperature at any point on the steel surface
3.1.12
limiting temperature
maximum value of temperature reached on the lower surface of the ribs of the profiled steel sheet
when the limiting exposure time is reached
3.2 Symbols and units
Symbol Unit Designation
L mm Length of the test specimen exposed to the furnace.
exp
L mm Centre to centre distance between the supports of the test specimen.
sup
L mm Total length of the test specimen.
spec
W
mm Width of test specimen exposed to the furnace.
exp
h mm Thickness of concrete in concrete/steel composite test specimen.
(h = depth of concrete above the steel ribs and h = depth of concrete within the
1 2
steel profile. Thickness h = h + h
1 2
l
mm Length of the components of the trapezoidal or re-entrant profile of the steel
p
sheet (l , l and l )
p1 p2 p3
P kN Loading applied to concrete/steel composite test specimen.
θ (θ ) Limiting temperature.
m,l m,u °C
h mm the effective thickness of the concrete/steel composite test slab.
eff
h mm the equivalent effective thickness of the concrete/steel composite test slab.
e
h mm the equivalent thickness of concrete corresponding to the particular thickness of
eq
the fire protection system tested.
t min The time at which an increase of the characteristic temperature of all
r
thermocouples on the unexposed concrete surface of 140 °C (or a maximum of
180 °C from a single thermocouple) is recorded.
f N/mm Yield strength of steel.
y
d mm Thickness of fire protection material.
p
4 Test equipment
4.1 General
The furnace and test equipment shall be as specified in EN 1363-1.
4.2 Furnace
The furnace shall be designed to permit the dimensions of the test specimen to be exposed to heating
to be as specified in 6.2 and its installation to be as specified in Clause 7.
4.3 Loading equipment
Loading equipment shall conform to that specified in EN 1363-1. The loading system shall permit
loading, of the magnitude defined in 5.3, to be applied along the length and width of the test
specimen.
The loading equipment shall not inhibit the free movement of air above the test specimen and no part
of the loading equipment, other than at the loading points, shall be closer than 60 mm to the
unexposed surface of the test specimen.
5 Test conditions
5.1 General
Test specimens, subjected to predefined loading, are heated upon a furnace under specified
temperature/time conditions, in horizontal orientation, with fire exposure applied from below.
Tests are carried out on a loaded large size test slab and an unloaded small size test slab to provide
information on:
 the temperature of the profiled steel sheet behind the fire protection system;
 the behaviour of the fire protection system and its stickability;
 the temperature of the unexposed side of the test specimen;
 the temperature throughout the concrete (optional for extended application purposes).
It is recommended that the test be continued until the temperature of the exposed profiled steel
surface reaches a mean value of at least 400 °C, (or any single maximum value of 500 °C is
recorded), to give the necessary information on the stickability of the fire protection system. These
temperatures may be modified if requested by the sponsor.
If the recommended termination temperatures are not reached after 6 hours test duration the test
shall normally be terminated.
The procedures given in EN 1363-1 and EN 1363-2 (if relevant) shall be followed in the performance
of this test method unless specific contrary instruction is given.
5.2 Support and restraint conditions
5.2.1 Standard conditions
The concrete/steel composite slab test specimens shall be tested as a simply supported one way
structure with two free edges and an exposed surface and span as specified in 6.3.
The concrete/steel composite slab test specimens shall be installed onto the furnace to allow freedom
for longitudinal movement and deflection using at one side rolling support(s) and at the other hinge
support(s).
The surface of the bearings shall be smooth concrete or steel plates. The width of the bearings shall
be the minimum representative of practice.
5.2.2 Other support and restraint conditions
If the support and restraint conditions differ from the standard conditions specified in 5.2.1, these
conditions shall be described in the test report and the validity of the test results will be restricted to
those tested.
5.3 Loading conditions
Loading shall be applied to the full size test specimens.
The magnitude and distribution of the load shall be such that the moment caused by the applied load
(P) taking account of the dead weight of the specimen (measured or derived from samples of the
components, see 6.5.1) and the weight of load distribution plates or beams represents 60 % of the
design moment resistance according to equation 7.5 (b) of EN 1994-1-1.
The design moment resistance shall be calculated from the nominal material properties of the
particular profiled steel sheet and the actual properties of the concrete used.
If the calculated load, when first applied, causes a deformation, at normal temperature, exceeding
L /250 then it shall be reduced until this criterion is met.
sup
The load shall be symmetrically applied to the test specimen along two transverse loading lines, each
one at a distance (L /4) from each of the supports. The proportion of the total load applied at each
sup
loading position shall be P/2, as specified in Figure 1. The load shall produce stresses approximating
to a uniformly distributed load.
Point loads shall be transferred to the test specimen through load distribution beams or plates (see
Figure 1a)).
The total contact area between these and the concrete surface of the test specimen shall be as
specified in EN 1363-1, provided that the load distribution beam or plate chosen has a flexural rigidity
large enough to give the required distribution of the load.
Load distribution beams, for safety reasons, shall have a height to width ratio of < 1.
If the load distribution beams or plates are of steel or other high conductivity material, they shall be
insulated from the concrete surface of the test specimen by a suitable thermal insulation material.
Unexposed surface thermocouples shall not be closer than 100 mm to any part of the load distribution
system as shown in Figure 1a).
6 Test specimens
6.1 Number of test specimens
At least one loaded full size concrete/steel composite test slab with the maximum thickness of applied
fire protection system and one unloaded small size concrete/steel composite test slab with the
minimum thickness of applied fire protection system shall be tested. If the fire protection system is
only available in one thickness, the full size loaded test only shall be carried out, at that thickness and
the applicability of the result restricted.
Additional small scale tests (one test per variable) may be carried out to provide further test data for
the fire protection system when:
 it is to be applied to a concrete/steel composite member of composite thickness less than that
specified in this test method;
 it is to be applied at intermediate fire protection thicknesses between maximum and minimum
thickness;
 the test is carried out to the smouldering curve, in which case a small size test slab with both
maximum and minimum thickness of applied fire protection material shall be tested, according to
Annex A.
6.2 Size of test specimens
The size of the test specimens shall be as specified in Table 1 and exemplified in Figure 1.
6.3 Construction of test specimens
6.3.1 Construction of concrete/steel composite test slabs
The concrete/steel composite test slabs shall comprise a trapezoidal or re-entrant steel profile plus
concrete of thickness h given in Table 1, over the upper ribs of the profiled steel sheet. The concrete
1,
shall contain prefabricated welded steel mesh, and may also include additional reinforcing bars.
The welded steel mesh, placed towards the unexposed surface in both small and large test slabs
shall comprise 4,0 mm diameter ribbed bars such that the area of reinforcing steel bars is (70 to 100)
mm per metre of width of the concrete/steel composite test element.
The position of the welded steel mesh with respect to the exposed steel and unexposed concrete
surfaces shall be ensured by the use of spacers, either plastic or concrete, such that the concrete
cover obtained is (20,0 ± 2,0) mm.
For large test slabs, only, a second welded steel mesh, laid on the surface of the upper ribs of the
profiled steel sheet shall be used. It shall comprise 6,0 mm diameter ribbed bars such that the area of
reinforcing steel bars is (70 to 100) mm per meter of width of the concrete/steel composite test
element.
The actual position of the main reinforcing bars at the exposed and unexposed surfaces shall be
accurately measured and recorded after the test at the positions of the thermocouples specified under
9.3. This shall be achieved by cutting the composite slab into at least two pieces through or close to
the required positions.
Lifting hooks may be incorporated into the composite slab. These shall be of sufficient number and
location to avoid longitudinal and transverse moments. Alternatively, the composite slabs shall be
supported on steel beams for lifting purposes.
Fixtures to which hangers may be attached may be provided on the unexposed side in order to avoid
the collapse of the test specimen during the test, especially where the test is continued beyond the
recommended termination temperature of 400 °C.
small test specimen large test specimen
1)
Exposed length (mm) L
exp ≥ 1 300 ≥ 3 000
1)
Span (mm) L
sup ≥ 1 500 ≥ 3 200
2) 2)
[(L + 200) > L < (L + 400)] [(L + 200) > L < (L + 400)]
exp sup exp exp sup exp
Length (mm) L
≥ 1 700 ≥ 3 400
spec
3) 3)
[(L + 400) > L < (L + 700) ] [(L + 400) > L < (L + 700)]
exp sup exp exp sup exp
Exposed width (mm) W
exp ≥ 1 000 ≥ 2 000
Thickness h = [h + h2]     [(50 ± 5) + height of ribs (h )] [(60 ± 5) + height of ribs (h )]
1 2 2
(mm)
Position of loading points none L /4
sup
from support points (symmetrically distributed)
1)
a span of 3 000 mm is mainly valid for trapezoidal decking with height of ribs of 50/60 mm and steel thickness of 1 mm.

2)
the distance between the exposed part of the test specimen and the supports shall be kept as small as possible. For tests of
short duration (less than 240 min) a distance of 100 mm at either end is recommended. For tests of longer duration, this can be
increased to 200 mm at either end, to protect the test equipment from heat damage.

3)
the additional length beyond the supports, required for installation purposes, shall be kept as small as it is practically possible.

6.3.2 Fabrication of concrete/steel composite slab test members
Composite slab test members shall be prepared in a smooth surfaced framework made from steel or
timber. To facilitate release of the edges of the slab from the framework, soluble oils or emulsions
shall preferably be used, although wax, non-soluble oil or non-soluble emulsions may be used. The
actual material used for this purpose shall be detailed in the test report.
6.3.3 Application of the fire protection system to the composite test slab
The steel surface of the composite test element shall be prepared as in practice. The surface of the
steel face of the concrete/steel composite test slab shall normally be dried prior to the application of
the fire protection system.
The fire protection system shall be uniformly applied to the test specimen, as in practice, including any
required fixing aids and in the same manner for both maximum and minimum thickness.
The fire protection material shall extend over the full exposed surface of the concrete/steel composite
test slab and be applied prior to the application of the test load (if any).
Where a fire protection system creates small cavities between the concrete/steel composite test
element and the fire protection material, the ends shall be sealed with fire resistant material to prevent
any flow of hot gases out of the cavities.
Board type fire protection systems shall include joints in accordance with the following criteria:
Large size test specimen: At least one longitudinal joint shall be situated on the longitudinal axis and
at least one transverse joint positioned not further than 500 mm from the transverse axis.
Small size test specimen: At least one longitudinal joint shall be situated on the longitudinal axis and
at least one transverse joint positioned not further than 100 mm from the transverse axis.
6.4 Composition of test specimen component materials
6.4.1 Profiled steel sheet
The steel used shall be of grade between Fe E 280G and Fe E 350G as defined in EN 10147. The
thickness of the steel sheet will normally be from (0,7 to 1,0) mm.
6.4.2 Concrete
The concrete in the test specimen shall normally be of type 25/30 to 30/37 [LC/C/HC - (light-weight,
normal-weight or heavy-weight concrete) according to EN 206-1 and EN 1992-1-1], although other
grades within the strength range 20/25 to 50/60 may be used.
The applicability of the results of the assessment arising from the testing of a particular density,
strength or thickness of concrete will be restricted according to 15.5, 15.6 and 15.8.
The concrete shall be prepared from silicious aggregates, of maximum aggregate size of 20 mm, and
portland cement. The composition and properties of the concrete used, shall be appropriate to those
defined in EN 206-1 and EN 1992-1-1.
Other non-silicious and lower density aggregates may be permitted, but the applicability of the results
of the assessment will be restricted according to 15.7.
The consistency of the wet concrete shall allow for good compaction and a smooth surface. The
consistency shall be of type S3 or F3 determined in accordance with EN 206-1.
6.4.3 Steel reinforcement
The steel reinforcement bars used shall be ribbed and shall be of grade B500 (to EN 10080) or
comparable European Standard grade (see EN 10080) with f = 500 N/mm . The permitted tolerances
y
on the dimensions of reinforcing bars are given in EN 10080.
6.4.4 Fire protection system
The composition of the fire protection system shall be specified by the sponsor and include, at least,
its expected nominal density, thickness and moisture content. For confidentiality reasons the sponsor
may not wish detailed formulation or composition details to be reported in the test report. Such data
shall, however, be provided and maintained in confidence in laboratory files.
6.5 Properties of test materials
6.5.1 General
The actual material properties of test specimen component materials shall be determined, according
to EN 1363-1 and using appropriate product test standards, on test materials or test samples
conditioned as defined in Clause 8.
6.5.2 Concrete
The density, moisture content and strength of the concrete component of each concrete/steel
composite slab tested shall be measured on small samples prepared from the same concrete batch,
at the same time, as that tested. The method used to prepare these samples and the means by which
they were conditioned shall be reported.
The concrete strength of all batches of concrete used shall be measured at intervals during
conditioning and on the day of the fire test according to one of the methods specified in EN 206-1.
The density and moisture content of all batches of concrete used to make each concrete/steel
composite slab tested shall be measured on small samples of area at least 200 mm × 200 mm
prepared in a mould using the same profiled steel sheet as that tested as the base to the mould. Each
sample shall be of the same thickness (h and h ) as that tested. Each sample shall be covered after
1 2
preparation with a water impermeable membrane on five sides, the top surface exposed, and
conditioned, with the concrete/steel composite test slab.
Using these samples, the density and moisture content shall be measured at intervals during
conditioning and on the day of the fire test to give the final density and moisture content.
The dimensions of the concrete/steel slab measured before application of the fire protection material
together with the weight of steel sheet, the weight of reinforcement and the final concrete density may
be used to calculate the dead-weight contribution of the concrete/steel slab to the calculation of load.
6.5.3 Steel
The grade of profiled steel sheet and steel reinforcing bars shall be confirmed either by measurement
to appropriate standards or by certificate of conformity, against the specification given in 6.4.1 and
6.4.3 respectively, which shall be provided by the supplier.
6.5.4 Fire protection material
The actual thickness, density and moisture content of the fire protection materials shall be measured
and recorded for each test specimen at the time of test, either directly upon the fire protection material
or upon special test samples taken. These shall be conditioned as defined in clause 8. The
procedures appropriate to different types of material are given in Annex B.
The thickness of board or panel type fire protection systems shall not deviate by more than 15 % of
the mean value over the whole of its surface. In this case the mean value shall be used in the
assessment of the results and the limits of applicability of the assessment. If it deviates by more than
15 %, the maximum thickness recorded shall be used in the assessment.
The thickness of sprayed or coated passive or reactive type fire protection systems shall be measured
on the lower steel rib (and on the upper rib in the case of trapezoidal steel profiles) at the thickness
measuring points specified in Figures 1 and 2.
The thickness of sprayed or coated passive or reactive type fire protection systems shall not deviate
by more than 20 % of the mean value over the whole of its surface. In this case the mean value shall
be used in the assessment of the results and the limits of applicability of the assessment. If it deviates
by more than 20 %, the maximum thickness recorded shall be used in the assessment.
The density of the fire protection material applied to the test slabs at maximum and minimum
thickness shall be recorded. The mean value of the density of the fire protection material at maximum
and minimum thickness shall be used in the assessment of the results of the test, unless the
difference between these is greater than 15 %, in which case the maximum density recorded shall be
used.
6.6 Verification of the test specimen
An examination and verification of the test specimen for conformity to specification shall be carried out
as defined in EN 1363-1.
The properties of the materials used in the preparation of the test specimen shall be measured using
special samples, where necessary, as described in 6.5 using the methods defined in Annex B.
The sponsor shall verify that the fire protection material has been applied correctly and in the case of
sprayed or coating materials ensure, by methods appropriate to the material, that it is of the design
composition and specification.
7 Installation of the test construction
The test construction, comprising the concrete/steel composite test slab, any supporting construction
or test frame and the fire protection system, shall be installed onto the furnace to allow freedom for
longitudinal deflection and movement, according to 5.2.1, using at one side rolling support(s) and at
the other side, hinge support(s).
Special attention shall be given to the choice of size of the
...