oSIST prEN 13381-5:2008

SLOVENSKI STANDARD
oSIST prEN 13381-5:2008
01-december-2008
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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
oSIST prEN 13381-5:2008 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 13381-5:2008

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oSIST prEN 13381-5:2008
EUROPEAN STANDARD
DRAFT
prEN 13381-5
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.

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oSIST prEN 13381-5:2008
prEN 13381-5:2008 (E)
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
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oSIST prEN 13381-5:2008
prEN 13381-5:2008 (E)
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

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oSIST prEN 13381-5:2008
prEN 13381-5:2008 (E)
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.


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oSIST prEN 13381-5:2008
prEN 13381-5:2008 (E)
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
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oSIST prEN 13381-5:2008
prEN 13381-5:2008 (E)
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
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oSIST prEN 13381-5:2008
prEN 13381-5:2008 (E)
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.
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prEN 13381-5:2008 (E)
2
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.
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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 l
...