SIST ENV 13381-6:2003
(Main)Test methods for determining the contribution to the fire resistance of structural members - Part 6: Applied protection to concrete filled hollow steel columns
Test methods for determining the contribution to the fire resistance of structural members - Part 6: Applied protection to concrete filled hollow steel columns
This Part of this European Prestandard specifies a test method for determining the contribu-tion of fire protection systems to the fire resistance of structural concrete filled hollow steel columns. 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 columns and includes sprayed fire protection, coatings, cladding protection systems and multi-layer or composite fire protection materials.
The test method and its assessment procedure is 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 structural column. Fire protection systems where the fire protection material is not attached directly to the composite column, leading to a continuous cavity between the column and the fire protection material of size greater than 5 mm are the subject of prENV 13381-2.
This European Prestandard contains the fire test which specifies the tests which should be carried out to determine the ability of the fire protection system to remain coherent and fixed to the composite column and to provide data on the temperatures of the outer steel surface of the composite column, when exposed to the standard time/temperature 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.
This exposure, applicable to reactive fire protection materials, is used only in special circumstances, where specified in the national building regulations of a member state of the European Union, and is not intended to be ma
Prüfverfahren zur Bestimmung des Beitrages zum Feuerwiderstand von tragenden Bauteilen - Teil 6: Brandschutzmaßnahmen für betonverfüllte Stahlverbund-Hohlstützen
Dieser Teil dieser Europäischen Vornorm legt ein Prüfverfahren fest zur Bestimmung des Beitrags der Brandschutzsysteme zur Feuerwiderstandsfähigkeit von tragenden betonverfüllten Stahlverbund-Hohlstützen. 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 Stützen verwendet werden und beinhaltet aufgesprühte Brandschutzmaterialien, Bekleidungen, Beschichtungsschutzsysteme und Mehr-schicht- 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 tragenden Stütze befestigt sind. Brandschutzsysteme, bei denen das Brandschutzmaterial nicht direkt auf der Verbundstütze befestigt ist und bei denen dadurch ein durchgehender Hohlraum zwischen der Stütze und dem Brandschutzmaterial von mehr als 5 mm entsteht, werden in ENV 13381-2 behandelt.
Diese Europäische Vornorm beinhaltet die Brandprüfung, die durchgeführt werden sollte, um die Fähigkeit des Brandschutzsystems, mit der Verbundstütze fest verbunden zu bleiben, zu bestimmen und um Daten über die Temperaturen der äußeren Stahloberfläche der Verbundstütze zu liefern, wenn diese der Einheits-Temperaturzeitkurve nach den hier definierten Verfahren ausgesetzt wird.
Unter besonderen Umständen, die in nationalen Regelungen festgelegt sind, kann es erforderlich sein, das reaktive Brandschutzmaterial einer Schwelbrandkurve zu unterziehen. Die Prüfung und die besonderen Umstände für deren Anwendung sind in Anhang A angegeben.
Méthodes ds'essai pour déterminer la contribution a la résistance au feu des éléments de construction - Partie 6: Protection appliquée aux poteaux métalliques creux remplis de béton
Cette partie de l'ENV 13381 spécifie une méthode d'essai permettant de déterminer la contribution apportée par les systemes de protection contre le feu a la résistance au feu des poteaux métalliques creux remplis de béton. Le béton peut etre de type léger, normal ou compact et appartenir aux classes de résistance aux contraintes 20/25 (LC/C/HC) a 50/60 (LC/C/HC). La méthode d'essai est applicable a tous les systemes de protection contre le feu utilisés pour protéger ce type de poteau et englobe les matériaux de protection contre le feu appliqués par pulvérisation, les revetements, les systemes de protection en plaque et les matériaux de protection contre le feu multi-couches ou composites. La méthode d'essai et sa procédure d'évaluation sont conçues pour permettre l'application directe des résultats a une gamme d'épaisseurs du matériau de protection contre le feu. La méthode d'essai est seulement applicable aux systemes de protection contre le feu qui sont fixés directement sur le poteau. Les systemes dans lesquels le matériau de protection contre le feu n'est pas fixé directement sur le poteau mixte, entraînant la présence d'une cavité continue, mesurant plus de 5 mm, entre le poteau et le systeme de protection contre le feu constituent l'objet de l'ENV 13381-2. La présente prénorme européenne contient l'essai au feu, qui spécifie les essais qui doivent etre effectués pour déterminer l'aptitude du systeme de protection contre le feu a rester cohérent et fixé sur le poteau mixte, et pour obtenir des données concernant les températures de la surface extérieure en acier du poteau mixte, lorsque ce poteau est exposée au feu suivant la courbe de température/temps normalisée, conformément aux procédures définies dans le présent document. Dans des circonstances particulieres, lorsque des reglements nationaux le prescrit, il peut etre nécessaire
Preskusne metode za ugotavljanje prispevka k požarni odpornosti konstrukcijskih elementov - 6. del: Zaščita votlih jeklenih stebrov s polnilom iz betona
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST ENV 13381-6:2003
01-januar-2003
3UHVNXVQHPHWRGH]DXJRWDYOMDQMHSULVSHYNDNSRåDUQLRGSRUQRVWLNRQVWUXNFLMVNLK
HOHPHQWRYGHO =DãþLWDYRWOLKMHNOHQLKVWHEURYVSROQLORPL]EHWRQD
Test methods for determining the contribution to the fire resistance of structural members
- Part 6: Applied protection to concrete filled hollow steel columns
Prüfverfahren zur Bestimmung des Beitrages zum Feuerwiderstand von tragenden
Bauteilen - Teil 6: Brandschutzmaßnahmen für betonverfüllte Stahlverbund-Hohlstützen
Méthodes ds'essai pour déterminer la contribution a la résistance au feu des éléments
de construction - Partie 6: Protection appliquée aux poteaux métalliques creux remplis
de béton
Ta slovenski standard je istoveten z: ENV 13381-6:2002
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
91.080.01 Gradbene konstrukcije na Structures of buildings in
splošno general
SIST ENV 13381-6:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST ENV 13381-6:2003
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SIST ENV 13381-6:2003
EUROPEAN PRESTANDARD
ENV 13381-6
PRÉNORME EUROPÉENNE
EUROPÄISCHE VORNORM
July 2002
ICS 13.220.50
English version
Test methods for determining the contribution to the fire
resistance of structural members - Part 6: Applied protection to
concrete filled hollow steel columns
This European Prestandard (ENV) was approved by CEN on 1 March 2002 as a prospective standard for provisional application.
The period of validity of this ENV is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the ENV can be converted into a European Standard.
CEN members are required to announce the existence of this ENV in the same way as for an EN and to make the ENV available promptly
at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the ENV) until the final
decision about the possible conversion of the ENV into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, 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
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. ENV 13381-6:2002 E
worldwide for CEN national Members.
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SIST ENV 13381-6:2003
ENV 13381-6:2002 (E)
Contents
page
Foreword. 3
1 Scope. 4
2 Normative references. 5
3 Terms and definitions, symbols and units. 5
4 Test equipment . 6
5 Test conditions . 7
6 Test specimens . 7
7 Installation of the test construction. 10
8 Conditioning of the test construction. 11
9 Application of instrumentation . 11
10 Test procedure. 12
11 Test results. 13
12 Test report . 14
13 Assessment . 15
14 Report of the assessment . 16
15 Limits of applicability of the results of the assessment. 16
Annex A (normative) Test method to the smouldering fire or slow heating curve. 20
Annex B (normative) Measurement of properties of fire protection materials. 22
Bibliography . 25
2
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SIST ENV 13381-6:2003
ENV 13381-6:2002 (E)
Foreword
This document ENV 13381-6:2002 has been prepared by Technical Committee CEN/TC127 "Fire safety in buildings", the
secretariat of which is held by BSI.
This document has been prepared under the mandate given to CEN/TC127 by the Commission of the European Committees
and the European Free Trade Association.
As there was little experience in carrying out these tests in Europe CEN/TC127 agreed that more experience should be built
up during a Prestandardisation period before agreeing text as European Standards. Consequently all parts are being prepared
as European Prestandards.
This European Prestandard 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 the ENV 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 5: Applied protection to concrete / profiled sheet steel composite members.
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
may 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 should be made and safety precautions should be identified and
provided. Written safety instructions should be issued. Appropriate training should be given to relevant personnel. Laboratory
personnel should ensure that they follow written safety instructions at all times.
The specific health and safety instructions contained within this test should be followed.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are
bound to announce this European Prestandard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany,
Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the
United Kingdom.
3
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SIST ENV 13381-6:2003
ENV 13381-6:2002 (E)
1Scope
This part of this European Prestandard specifies a test method for determining the contribution of fire protection
systems to the fire resistance of structural concrete filled hollow steel columns. 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 columns and
includes sprayed fire protection, coatings, cladding protection systems and multi-layer or composite fire protection
materials.
The test method and its assessment procedure is 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 structural column. Fire
protection systems where the fire protection material is not attached directly to the composite column, leading to a
continuous cavity between the column and the fire protection material of size greater than 5 mm are the subject of
ENV 13381-2.
This European Prestandard contains the fire test which specifies the tests which should be carried out to determine
the ability of the fire protection system to remain coherent and fixed to the composite column and to provide data
on the temperatures of the outer steel surface of the composite column, when exposed to the standard
time/temperature 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.
This exposure, applicable to reactive fire protection materials, is used only in special circumstances, where specified
in the national building regulations of a member state of the European Union, and is not intended to be mandatory
for all fire protection materials applied to concrete filled hollow steel columns.
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 ENV 1994-1-2.
This European Prestandard also contains the assessment which prescribes how the analysis of the test data should
be made and gives guidance to the procedures by which interpolation should 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 columns, steel types and thicknesses,
concrete densities, strengths, thicknesses and production techniques over the range of thicknesses of the applied fire
protection system tested.
4
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SIST ENV 13381-6:2003
ENV 13381-6:2002 (E)
2 Normative references
This European Prestandard incorporates by dated or undated reference, provisions from other publications. 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 Prestandard
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 1365-4 Fire resistance tests for loadbearing elements - Part 4: Columns.
ENV 1992-1-1 Eurocode 2: Design of concrete structures
Part 1-1: General rules and rules for buildings.
ENV 1994-1-1:1992 Eurocode 4: Design of composite steel and concrete structures
Part 1-1: General rules and rules for buildings.
EN 10210-1 Hot finished structural hollow sections of non-alloy and fine grain structural steels
Part 1: Technical delivery requirements.
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 Prestandard, 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 filled hollow steel column
element of building construction which is loadbearing and is fabricated from an outer hollow steel column which has been
filled with concrete and may or may not contain steel reinforcement within the concrete
3.1.2
fire protection material
material or combination of materials applied to the outer surface of a concrete filled hollow steel composite column or the
purpose of increasing its fire resistance
3.1.3
passive fire protection materials
materials which do not change their physical form upon 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 provide fire protection by thermal insulative and cooling effects
5
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SIST ENV 13381-6:2003
ENV 13381-6:2002 (E)
3.1.5
fire protection system
fire protection material together with a prescribed method of attachment to the concrete filled hollow steel composite column
3.1.6
fire protection
protection afforded to the concrete filled hollow steel composite column by the fire protection system such that the
temperature throughout the depth of the column and upon any steel reinforcing bars within it is limited throughout the period
of exposure to fire
3.1.7
test specimen
concrete filled hollow steel test column plus the fire protection system under test
3.1.8
fire protection thickness
thickness of a single layer fire protection system or the 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
characteristic temperature
surface temperature of the steel outer surface of the concrete filled hollow column which is used for assessment purposes
3.2 Symbols and units
Symbol Unit Designation.
h mm Height of the column exposed to heating according to EN 1365-4.
exp
h mm Centre to centre distance between the test column supports (according to
sup
EN 1365-4).
h mm Height of the test column excluding plates and hinges.
spec
P kN Load applied to the concrete filled hollow steel test column.
°C Critical temperature (as specified in ENV 1994-1-2).
crit
4 Test equipment
4.1 General
The furnace and test equipment shall conform to that 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 as specified
in 5.1 and its installation to be as specified in clause 7.
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ENV 13381-6:2002 (E)
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 and controlled throughout the test according to EN 1363-1.
5 Test conditions
5.1 General
Test columns, subjected to predefined loading, are heated in a furnace in vertical orientation, under specified
temperature/time conditions.
Tests are made on loaded and unloaded columns to provide information on:
a) the temperature of the steel surface of the column behind the fire protection system;
b) the ability of the fire protection system to remain attached to the steel surface of the test column
(stickability).
It is recommended that the test be continued until the temperature of the steel surface reaches a mean value of at least
650 °C (or until any single maximum value of 800 °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, where appropriate, EN 1363-2 shall be followed in the performance of this
test unless specific contrary instruction is given.
5.2 Support and restraint conditions for columns
The support and restraint conditions employed for the installation of test columns shall be as specified in EN 1365-4.
Where a pin-joint condition is specified this shall be created according to EN 1365-4.
Where a fully restrained, fixed end, condition is specified this shall be created according to EN 1365-4.
5.3 Loading conditions
Loading shall be applied to the full size test specimens.
The magnitude and distribution of the load shall produce an eccentrically and axially applied load (P) which
represents 60 % of the design load, for the column in combined compression and uniaxial bending according to
4.8.3.13 of ENV 1994-1-1:1992. The factors, = 1 (for both steel and concrete), a buckling length equal to h
M sup
and those actual material properties defined in 6.5 shall be used in the calculation of the load to be applied.
6 Test specimens
6.1 Number of test specimens
At least one loaded full size composite test column with the minimum thickness of applied fire protection system
and one unloaded small size test column with the maximum thickness shall be tested. If the system is only available
in one thickness, then the full size loaded test only shall be carried out, at that thickness and the applicability of the
result restricted.
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SIST ENV 13381-6:2003
ENV 13381-6:2002 (E)
Additional unloaded small size columns may be tested with the fire protection system applied at intermediate
thicknesses or to other sizes of cross-section (within the same cross-section shape only) in order to provide
temperature data which may be used for direct application purposes.
Two unloaded small size test columns, one with the maximum and one with the minimum thickness of applied fire
protection system is used when the test is carried out to the smouldering curve, according to annex A (unless the
material is available in one thickness only).
6.2 Size of test specimens
The size of the test columns or specimens shall be as specified in Table 1 and exemplified in Figure 1.
Table 1 - Sizes of test specimens
small specimen large specimen
1)
Exposed height h (mm)‡
‡ 3 000
exp
2)
Height of column h (mm) Not applicable h < (h + 600)
sup sup exp
1)
The size of small test column shall be ‡ 5 times the equivalent diameter () of its circular cross-section or ‡ 5 times the
smallest cross-sectional dimension if square or rectangular.
2)
This additional length beyond the supports and required for installation purposes shall be as specified in EN 1365-4 and kept as
small as possible.
6.3 Construction of test specimens
6.3.1 Construction of concrete filled hollow steel test columns
The concrete filled hollow steel composite test column shall comprise a square steel hollow section of size
(150 to 160) mm · (150 to 160) mm or a circular column of (160 to 170) mm diameter. The thickness of the steel
will normally be the minimum available.
Both large and small hollow steel test columns shall contain at least two 20 mm diameter holes (one at either end)
for steam venting (see Figure 1). The hollow steel test columns shall be filled with concrete to the composition
specified in 6.4.2.
Steel plates of area greater than the cross-sectional area of the test column and its applied fire protection system, by
at least 10 mm in every direction and 20 mm approximate thickness shall be welded to both the top and the bottom
of both large and small test columns, after the column is conditioned and before testing.
6.3.2 Application of the fire protection system to the composite test column
The steel surface of the composite test column shall be prepared as in practice. The outer steel surface of the
composite test column shall normally be dried prior to the application of the fire protection system.
The fire protection system shall be uniformly applied to the test column, as in practice, including any required fixing
aids and in the same manner for both maximum and minimum thickness.
The fire protection system shall extend over the full exposed surface of the concrete filled hollow test column and
be applied prior to the application of the test load (if any).
Where a fire protection system creates small cavities between the concrete filled hollow steel test column and the
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ENV 13381-6:2002 (E)
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 materials shall include joints in accordance with the following:
- large size test column: at least one transverse joint positioned at a distance no further than 500 mm from mid
column height;
- small size test column: at least one transverse joint positioned at a distance no further than 100 mm from mid
column height.
6.4 Composition of components of test specimen
6.4.1 Hollow steel column
The steel used shall be at least of grade S 235 or comparable grade as defined in EN 10210-1.
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 ENV 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 or strength of
concrete will be restricted according to 15.4 and 15.5.
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 specified in EN 206-1 and
ENV 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 15.6.
The consistency of the wet concrete, which shall be poured into the hollow steel column positioned in vertical
orientation, shall be of type S3 or F3 determined in accordance with EN 206-1 to allow for good compaction and
contact with the steel.
6.4.3 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 concrete strength of the concrete component of each concrete filled hollow steel
composite column, shall be measured at intervals throughout the conditioning process and on the day of test using
small representative samples prepared at the same time and from the same concrete batch as each composite column
tested. The method used to prepare these samples and the means by which they were conditioned shall be reported.
9
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ENV 13381-6:2002 (E)
These small samples shall be of the same cross-section (either square or circular) and of similar (greater than or equal
to) dimensions to the steel test column tested. They shall be of 100 mm thickness. They shall be covered with an
impermeable membrane on five sides, the top surface exposed and conditioned, with the test section, as specified
in clause 8.
The concrete strength shall be measured according to one of the methods specified in EN 206-1. The test method
used shall be reported.
6.5.3 Steel
The grade of steel used in the hollow column shall be confirmed either by measurement to appropriate standards or
by certificate of conformity, which shall be provided by the supplier, against the specification given in 6.4.1.
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 column at the time of the fire test, either directly upon the fire protection material itself or upon special
samples taken for this purpose. 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 should 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 fire protection materials shall be measured in the proximity
of each of the thermocouples fixed to the steel surface of the test column beneath the applied fire protection system.
These points are illustrated in Figure 1.
The thickness of sprayed or coated passive or reactive type fire protection systems should 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 columns 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 and in the limits of applicability of the assessment. If the difference
between these is greater than 15 %, then the maximum recorded density 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 as
defined in 6.5 using special samples, where necessary, 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
coated materials ensure, by methods appropriate to the material, that it is of the design composition and specification.
7 Installation of the test construction
7.1 Loaded test column
Loaded test columns shall be mounted vertically in the furnace, with one end pin-jointed and the other end fully
restrained. The extremities of the support of the test column shall be sealed by resilient material of adequate fire
performance to prevent leakage of hot gases during the test. Allowance shall be made for free expansion of the
column and free deformation perpendicular to its longitudinal axis.
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The pin-joint shall be accurately located along the axis of the column so as to allow the load to be applied with a
controlled eccentricity (from the vertical column axis) of h /500 mm or 7 mm maximum.
sup
7.2 Unloaded specimen
Short test columns shall be mounted vertically to the underside of the furnace cover slab or stood on the furnace
floor, either directly or on plinths.
A slab of ceramic fibre (or equivalent material) thermal insulation board of thickness (10 ± 1) mm and density
3
(350 ± 50) kg/m shall be used between all contact surfaces of the column and the cover slab or the furnace floor
or plinth. The linear dimensions of this shall be greater than the total overall dimensions of the column test specimen.
The exposed ends of unloaded short column test specimens shall be protected with thermal insulation board, or
similar, which at elevated temperatures is capable to provide an equivalent thermal insulation to at least 5 times that
of the particular thickness of the fire protection material applied over the length of the column.
8 Conditioning of the test construction
The test construction and test samples taken for the determination of material properties (specified in 6.
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