SIST EN 13381-10:2020
(Main)Test methods for determining the contribution to the fire resistance of structural members - Part 10: Applied protection to solid steel bars in tension
Test methods for determining the contribution to the fire resistance of structural members - Part 10: Applied protection to solid steel bars in tension
This European Standard specifies a fire test method and an assessment procedure for determining the contribution of fire protection systems to the fire resistance performance of circular and rectangular steel bars used as tension members.
This Standard applies to fire protection materials that have already been tested and assessed in accordance with EN 13381 4 or EN 13381-8 unless all the testing is carried out in accordance with Annex B using a minimum length of 2 000 mm. If testing to EN 13381 4 or EN 13381-8 has not been carried out then loaded testing shall be carried out in accordance with Annex B.
For other section shapes such as angles, channels and flats, reference should be made to EN 13381 4 and EN 13381 8. This standard does not include steel or any other cold formed bar used as reinforcement in concrete construction.
For other solid bar geometries such as oval or triangular cross section, these should be subject to a separate test package in accordance with the principles of Clause 5 of this Standard.
Fire protection performance is determined by testing of unloaded tension members, although additional loaded test evidence may be required for certain product types subject to certain conditions specified in the Standard.
The method is applicable to all fire protection systems used for the protection of solid bar up to a maximum diameter of 130 mm and includes sprayed fire protection, reactive coatings, cladding protection systems and multi-layer or composite fire protection materials. In the case of rectangular bar, the maximum side length should be limited to 130mm with a maximum aspect ratio of 2:1 against the shorter side length. For dimensions greater than 130mm it is appropriate to use rectangular or circular hollow sections tested and assessed in accordance with EN 13381 4 and EN 13381 8 provided they have been tested in the same orientation.
The evaluation is designed to cover a range of thicknesses of the applied fire protection material, a range of steel bar dimensions, a range of specified temperatures and a range of valid fire protection periods.
The test method is applicable to fire protection systems which are intimately in contact with the bar, or which include an airspace between the bar and the protection system as given in EN 13381-4.
This standard also provides the assessment procedure, which prescribes the analysis of the test data and gives guidance on the procedures to undertake interpolation.
This Standard caters for testing in both vertical and horizontal orientations. Results from horizontally orientated bar may be applied to any orientation, whilst results from vertically orientated bar should only be used for horizontal bars when the data has been corrected in accordance with Annex C.
This standard gives the fire test procedures, carried out to provide data on the thermal characteristics of the fire protection system, when exposed to the standard temperature/time curve specified in Clause 5.1.1 of EN 1363 1.
The assessment procedure is used to establish:
a) on the basis of data derived from testing steel bar, any practical constraints on the use of the fire protection system under fire test conditions (the physical performance);
b) on the basis of the temperature data derived from testing steel bar the thermal properties of the fire protection system (the thermal performance).
The limits of applicability of the results of the assessment arising from the fire test are defined together with application of the results to different steel types and sizes over the range of thicknesses of the applied fire protection system tested.
Prüfverfahren zur Bestimmung des Beitrages zum Feuerwiderstand von tragenden Bauteilen - Teil 10: Brandschutzmaßnahmen für Stahl-Vollstäbe unter Zugbeanspruchung
Dieses Dokument legt ein Brandprüfverfahren und ein Bewertungsverfahren zur Ermittlung des Beitrages von Brandschutzsystemen zur Feuerwiderstandsfähigkeit von Stahlstäben mit rundem und rechteckigem Querschnitt, die als Zugglieder eingesetzt werden, fest.
Dieses Dokument gilt für Brandschutzmaterialien, die bereits nach EN 13381 4 oder EN 13381 8 geprüft und bewertet wurden.
Für Querschnitte mit einer anderen Form wie die von Winkel-, U- und Flachprofilen kann Bezug auf EN 13381 4 und EN 13381 8 genommen werden. Stahlstäbe und andere kaltgeformte Stäbe, die in Betonkonstruktionen als Bewehrung eingesetzt werden, sind nicht Gegenstand dieses Dokuments.
Auf Vollstäbe mit einer anderen geometrischen Form, wie einem ovalen oder dreieckigen Querschnitt, ist eine separate Prüfreihe in Übereinstimmung mit den Prinzipien von Abschnitt 5 dieses Dokuments anzuwenden.
Die Brandschutzwirkung wird durch Prüfung unbelasteter Zugglieder bestimmt, wobei jedoch unter gewissen, im Dokument beschriebenen Bedingungen zusätzliche Nachweise durch Prüfungen mit Belastung für bestimmte Produkttypen erforderlich sein können.
Das Verfahren ist auf alle Brandschutzsysteme anwendbar, die für den Schutz von Vollstäben mit einem Durchmesser von bis zu 130 mm verwendet werden, und umfasst aufgesprühte Brandschutzmaterialien, reaktive Beschichtungen, Fassadenverkleidungsschutzsysteme sowie mehrschichtige Brandschutz¬materialien oder Brandschutzsysteme aus Verbundwerkstoffen. Im Fall eines rechteckigen Stabs ist die maximale Seitenlänge auf 130 mm beschränkt und das maximale Seitenverhältnis gegenüber der kürzeren Seitenlänge muss 2 : 1 betragen. Bei Seitenlängen von mehr als 130 mm ist die Verwendung von runden oder rechteckigen Hohlprofilen angemessen, die nach EN 13381 4 und EN 13381 8 geprüft und bewertet wurden, sofern sie in der gleichen Orientierung geprüft wurden.
In die Bewertung einbezogen werden verschiedene Schichtdicken des angewendeten Brandschutzmaterials, verschiedene Stahlstabgrößen, verschiedene festgelegte Temperaturen sowie eine Bandbreite möglicher Feuerwiderstandsdauern.
Das Prüfverfahren ist anwendbar auf Brandschutzsysteme mit unmittelbarer Berührung zum Stab oder mit einem Luftraum zwischen Stab und Schutzsystem, wie in EN 13381 4 angegeben.
Dieses Dokument beschreibt auch ein Bewertungsverfahren, das die Analyse der Messwerte beinhaltet, und gibt eine Anleitung, wie Interpolationen durchzuführen sind.
Dieses Dokument deckt Prüfungen sowohl in vertikaler als auch horizontaler Anordnung ab. Ergebnisse für einen horizontal ausgerichteten Stab können auf jede Anordnung angewandt werden, während Ergebnisse für einen vertikal ausgerichteten Stab nur für horizontal angeordnete Stäbe verwendet werden, wenn die Daten entsprechend Anhang C korrigiert wurden.
Dieses Dokument enthält die Prüfverfahren für die Brandprüfungen, die zur Ermittlung der thermischen Eigenschaften des Brandschutzsystems bei Beanspruchung unter den Bedingungen der Einheitstemperatur¬zeitkurve nach EN 1363 1 durchgeführt werden.
Ziel des Bewertungsverfahrens ist es:
a) mit Hilfe von durch Prüfung von Stahlstäben ermittelten Messwerten Einschränkungen in der praktischen Anwendbarkeit des Brandschutzsystems unter Brandbeanspruchung festzulegen (Formverhalten);
b) mit Hilfe von durch Prüfung von Stahlstäben ermittelten Temperaturmesswerten die thermischen Eigenschaften des Brandschutzsystems zu bestimmen (thermische Leistungsfähigkeit).
Die Anwendungsgrenzen der aus Brandprüfungen ermittelten Ergebnisse der Bewertung sowie die Übertragbarkeit der Ergebnisse auf unterschiedliche Stahlarten und -größen für die verschiedenen Dicken des geprüften Brandschutzsystems werden festgelegt.
Méthodes d’essai pour déterminer la contribution à la résistance au feu des éléments de construction - Partie 10 : Protection appliquée aux barres d’acier pleines précontraintes (tirants)
Le présent document spécifie une méthode d’essai au feu et un mode opératoire d’évaluation permettant de déterminer la contribution des systèmes de protection au feu aux performances de résistance au feu des barres d’acier circulaires et rectangulaires utilisées comme éléments précontraints.
Le présent document s’applique aux matériaux de protection au feu qui ont déjà été soumis à essai et évalués conformément à l’EN 13381 4 ou à l’EN 13381 8.
Pour les autres formes de tronçon, comme les cornières, les profilés en U et les plats, il est possible de se référer à l’EN 13381 4 et à l’EN 13381 8. Le présent document n’inclut pas les barres d’acier ni autres barres profilées à froid utilisées comme renfort dans les constructions en béton.
Quant aux autres formes géométriques de barres pleines, par exemple de section ovale ou triangulaire, elles sont soumises à un lot d’essai séparé conformément aux principes de l’Article 5 du présent document.
Les performances de protection au feu sont déterminées par l’essai d’éléments non chargés, toutefois des résultats d’essai supplémentaires avec charge peuvent être requis pour certains types de produits soumis à certaines conditions spécifiées dans le présent document.
La méthode d’essai est applicable à tous les systèmes de protection au feu utilisés pour protéger les barres pleines jusqu’à un diamètre maximal de 130 mm et englobe les matériaux de protection au feu appliqués par projection, les revêtements réactifs, les systèmes de protection en plaque et les matériaux de protection au feu multicouches ou composites. Dans le cas d’une barre rectangulaire, la longueur de côté maximale est limitée à 130 mm avec un rapport de forme maximal de 2:1 par rapport à la longueur du côté le plus court. Pour les dimensions supérieures à 130 mm, il est approprié d’utiliser des tronçons creux rectangulaires ou circulaires soumis à essai et évalués conformément à l’EN 13381 4 et à l’EN 13381 8, à condition qu’ils aient été soumis à essai dans la même orientation.
L’évaluation est conçue pour couvrir une plage d’épaisseurs du matériau de protection au feu appliqué, une plage de dimensions de barres d’acier, une plage de températures spécifiées et une plage de durées de protection au feu valables.
La méthode d’essai est applicable aux systèmes de protection au feu qui se trouvent en étroit contact avec la barre ou qui comprennent un espace d’air entre la barre et le système de protection comme indiqué dans l’EN 13381 4.
Le présent document fournit également le mode opératoire d’évaluation qui prescrit l’analyse des données d’essai et donne des recommandations sur les modes opératoires permettant d’entreprendre une interpolation.
Le présent document couvre les essais dans les orientations à la fois verticales et horizontales. Les résultats issus de barres orientées à l’horizontale peuvent être appliqués à toutes les orientations, tandis que les résultats issus de barres orientées à la verticale ne sont utilisés pour les barres horizontales qu’après correction des données conformément à l’Annexe C.
...
Preskusne metode za ugotavljanje prispevka k požarni odpornosti konstrukcijskih elementov - 10. del: Ukrepi za zaščito napetih polnih jeklenih palic
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 13381-10:2020
01-julij-2020
Preskusne metode za ugotavljanje prispevka k požarni odpornosti konstrukcijskih
elementov - 10. del: Ukrepi za zaščito napetih polnih jeklenih palic
Test methods for determining the contribution to the fire resistance of structural members
- Part 10: Applied protection to solid steel bars in tension
Prüfverfahren zur Bestimmung des Beitrages zum Feuerwiderstand von tragenden
Bauteilen - Teil 10: Brandschutzmaßnahmen für Stahl-Vollstäbe unter
Zugbeanspruchung
Méthodes d’essai pour déterminer la contribution à la résistance au feu des éléments de
construction - Partie 10 : Protection appliquée aux barres d’acier pleines précontraintes
(tirants)
Ta slovenski standard je istoveten z: EN 13381-10:2020
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
91.080.13 Jeklene konstrukcije Steel structures
SIST EN 13381-10:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 13381-10:2020
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SIST EN 13381-10:2020
EN 13381-10
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2020
EUROPÄISCHE NORM
ICS 13.220.50; 91.080.13
English Version
Test methods for determining the contribution to the fire
resistance of structural members - Part 10: Applied
protection to solid steel bars in tension
Méthodes d'essai pour déterminer la contribution à la Prüfverfahren zur Bestimmung des Beitrages zum
résistance au feu des éléments de construction - Partie Feuerwiderstand von tragenden Bauteilen - Teil 10:
10 : Protection appliquée aux barres d'acier pleines Brandschutzmaßnahmen für Stahl-Vollstäbe unter
précontraintes (tirants) Zugbeanspruchung
This European Standard was approved by CEN on 14 March 2020.
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. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13381-10:2020 E
worldwide for CEN national Members.
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SIST EN 13381-10:2020
EN 13381-10:2020 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 7
3 Terms and definitions, symbols and units . 7
3.1 Terms and definitions . 7
3.2 Symbols and units. 8
4 Test equipment. 9
4.1 General . 9
4.2 Furnace . 9
5 Test procedures . 9
5.1 General . 9
5.2 Support conditions . 9
5.3 Number of test specimens . 9
5.4 Size of test specimens . 10
5.5 Construction of steel test specimens . 10
5.5.1 Steel specification . 10
5.5.2 Surface treatment and application of the fire protection material . 10
5.6 Composition of fire protection materials . 10
5.6.1 General . 10
5.6.2 Thickness of applied reactive protection materials . 10
5.7 Selection of test specimens . 10
6 Installation of the test specimens . 12
6.1 Test specimen installation patterns . 12
6.2 Installation of the steel bars . 13
6.3 Furnace Load . 13
7 Conditioning of the test specimens . 13
8 Application of instrumentation . 13
8.1 General . 13
8.2 Instrumentation for measurement and control of furnace temperature . 13
8.2.1 General . 13
8.2.2 Furnace temperature in the region of test specimens . 13
8.3 Instrumentation for the measurement of steel temperatures . 14
8.4 Instrumentation for the measurement of pressure . 14
9 Test procedure . 14
9.1 General . 14
9.2 Furnace temperature and pressure . 14
9.3 Temperature of steelwork . 14
9.4 Observations . 15
9.5 Termination of test . 15
10 Test results. 15
10.1 Acceptability of test results. 15
2
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EN 13381-10:2020 (E)
10.2 Presentation of test results in the test report . 15
11 Assessment . 16
11.1 General . 16
11.2 Assessment procedure for thermal performance . 16
12 Report of the assessment . 16
13 Limits of the applicability of the results of the assessment . 17
13.1 General . 17
13.2 Range in fire protection thickness . 17
13.3 Range in dimensions . 17
Annex A (normative) Linear interpolation analysis . 20
Annex B (normative) Loaded test . 26
B.1 General . 26
B.2 Test equipment . 26
B.3 Test specimens . 26
B.4 Application of instrumentation . 26
B.5 Installation of test specimens . 26
B.6 Application of load . 26
B.7 Correction of data . 27
Annex C (normative) Maximum thickness selection and stickability correction for
reactive coatings . 28
Annex D (informative) A-deviations . 30
Bibliography . 31
3
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SIST EN 13381-10:2020
EN 13381-10:2020 (E)
European foreword
This document (EN 13381-10:2020) has been prepared by Technical Committee CEN/TC 127 “Fire
safety in buildings”, the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by November 2020, and conflicting national standards
shall be withdrawn at the latest by November 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document is complementary and supportive to EN 13381-4 and EN 13381-8.
It 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 series are:
— Part 1: Horizontal protective members
— Part 2: Vertical protective members
— Part 3: Applied protection to concrete members
— Part 4: Applied passive protection to steel members
— Part 5: Applied protection to concrete/profile sheet steel and composite members
— Part 6: Applied protection to concrete filled hollow steel columns
— Part 7: Applied protection to timber members
— Part 8: Applied reactive protection to steel members
— Part 9: Applied fire protection systems to steel beams with web openings
All the above Standards were prepared under a standardization request given to CEN by the European
Commission and the European Free Trade Association. However, whilst this European Standard is
complimentary and supportive to EN 13381-4 and EN 13381-8, it falls outside of the scope of that
standardization request and its results cannot be used as a basis of any European Classification for
Resistance to Fire. It does, however, provide a valuable common basis for the fire protection industry
to evaluate products and for national authorities to determine a product’s suitability to provide an
appropriate level of fire protection to steel members in tension.
Attention is drawn to the A-deviation, in accordance with Annex E of the CEN/CENELEC Internal
Regulations Part 2:2017, granted to DIN by virtue of the evidence presented in Annex D that indicates
the existence of a conflicting national methodology supporting existing regulatory requirements in
Germany.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey
and the United Kingdom.
4
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SIST EN 13381-10:2020
EN 13381-10:2020 (E)
Introduction
The evaluation of a product's capability to provide fire protection performance to I or H section, or
hollow section, columns and beams is undertaken by test and assessment procedures detailed in
EN 13381-4 for passive (non-reactive) fire protection products and in EN 13381-8 for reactive
(intumescent) fire protection products.
The scopes of both the above standards specifically exclude the evaluation of solid bars used as tension
members. This document, therefore, provides supplementary test and assessment procedures to
those given in EN 13381-4 and EN 13381-8 to extend a product's scope of application to cover solid
circular or rectangular bars used as tension members. It is equally applicable to passive and reactive
fire protection products.
The evaluation represents an assessment of a product's fire insulation performance across a range of
solid circular and/or rectangular cross section bars on the basis of tests on unloaded specimens and
where appropriate loaded specimens. At the point of failure the strain generated on the bottom flange
of a loaded beam during testing to EN 13381-4 or EN 13381-8 is greater than that produced in circular
or rectangular bars in tension. Also, the strain generated during loaded column testing is similar to
that generated in circular or rectangular bars in tension.
In addition, recent testing of loaded and unloaded bars protected with reactive coatings has shown
that the benefit of a loaded test is very much dependant on product thickness; increased thickness of
product reduces the difference between loaded and unloaded testing. A minimum generic thickness
cannot be specified, however, as this is product dependent. Within EN 13381-8, product stickability is
determined from loaded beam and/or loaded column testing at intended maximum product thickness.
Therefore, where the scope of testing in this document uses lower thicknesses, then loaded testing in
accordance with Annex B should be carried out.
In all cases, the maximum protection thickness tested on unloaded bars should not be greater than the
maximum from loaded beams, columns or hollow columns tested to EN 13381-4 for passive fire
protection products or tested to EN 13381-8 for reactive fire protection products. If higher
thicknesses are required to provide any level of fire protection performance, then this should be
validated on the basis of testing loaded bars in accordance with Annex B of this document.
For passive fire protection products, similar loaded tests are only required when the system fixing
details to a tension member are not considered to fairly represent those used in the products
EN 13381-4 evaluation.
An appropriate supplementary loaded test is, therefore, included in this document as a Normative
Annex B to be applied only when required as detailed above.
Caution: The attention of all persons concerned with managing and carrying out this fire resistance
test, is drawn to the 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 should be made and safety precautions
should be identified and provided. Written safety instructions should be issued with the
manufacturer's health and safety product data sheet.
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 document should be followed.
5
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SIST EN 13381-10:2020
EN 13381-10:2020 (E)
1 Scope
This document specifies a fire test method and an assessment procedure for determining the
contribution of fire protection systems to the fire resistance performance of circular and rectangular
steel bars used as tension members.
This document applies to fire protection materials that have already been tested and assessed in
accordance with EN 13381-4 or EN 13381-8.
For other section shapes such as angles, channels and flats, reference can be made to EN 13381-4 and
EN 13381-8. This document does not include steel or any other cold formed bar used as reinforcement
in concrete construction.
For other solid bar geometries such as oval or triangular cross section, these are subject to a separate
test package in accordance with the principles of Clause 5 of this document.
Fire protection performance is determined by testing of unloaded tension members, although
additional loaded test evidence can be required for certain product types subject to certain conditions
specified in the document.
The method is applicable to all fire protection systems used for the protection of solid bar up to a
maximum diameter of 130 mm and includes sprayed fire protection, reactive coatings, cladding
protection systems and multi-layer or composite fire protection materials. In the case of rectangular
bar, the maximum side length is limited to 130 mm with a maximum aspect ratio of 2:1 against the
shorter side length. For dimensions greater than 130 mm it is appropriate to use rectangular or
circular hollow sections tested and assessed in accordance with EN 13381-4 and EN 13381-8
provided they have been tested in the same orientation.
The evaluation is designed to cover a range of thicknesses of the applied fire protection material, a
range of steel bar dimensions, a range of specified temperatures and a range of valid fire protection
periods.
The test method is applicable to fire protection systems which are intimately in contact with the bar,
or which include an airspace between the bar and the protection system as given in EN 13381-4.
This document also provides the assessment procedure, which prescribes the analysis of the test data
and gives guidance on the procedures to undertake interpolation.
This document caters for testing in both vertical and horizontal orientations. Results from horizontally
orientated bar can be applied to any orientation, whilst results from vertically orientated bar are only
used for horizontal bars when the data has been corrected in accordance with Annex C.
This document gives the fire test procedures, carried out to provide data on the thermal
characteristics of the fire protection system, when exposed to the standard temperature/time curve
specified in EN 1363-1.
The assessment procedure is used to establish:
a) on the basis of data derived from testing steel bar, any practical constraints on the use of the fire
protection system under fire test conditions (the physical performance);
b) on the basis of the temperature data derived from testing steel bar the thermal properties of the
fire protection system (the thermal performance).
The limits of applicability of the results of the assessment arising from the fire test are defined
together with application of the results to different steel types and sizes over the range of thicknesses
of the applied fire protection system tested.
6
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EN 13381-10:2020 (E)
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
EN 1363-1, Fire resistance tests - Part 1: General requirements
EN 10025 (all parts), Hot rolled products of structural steels
EN 13381-4, Test methods for determining the contribution to the fire resistance of structural members
- Part 4: Applied passive protection to steel members
EN 13381-8, Test methods for determining the contribution to the fire resistance of structural members
- Part 8: Applied reactive protection to steel members
EN ISO 13943, Fire safety - Vocabulary (ISO 13943)
ISO 8421-2, Fire protection — Vocabulary — Part 2: Structural fire protection
3 Terms and definitions, symbols and units
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1363-1, EN ISO 13943 and
ISO 8421-2, and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• ISO Online browsing platform: available at https://www.iso.org/obp/
• IEC Electropedia: available at http://www.electropedia.org/
3.1.1
steel bar
circular or rectangular solid bar composed entirely of steel with a consistent cross sectional size
throughout its length
3.1.2
reactive fire protection material
reactive material which is specifically formulated to provide a chemical reaction upon heating such
that its physical form changes and in so doing provides fire protection by thermal insulative and
cooling effect
3.1.3
passive fire protection material
material which does not change its physical form on heating, providing protection by virtue of its
physical or thermal properties
Note 1 to entry: They may include materials containing water which, on heating evaporates to produce
cooling effects.
3.1.4
fire protection system
fire protection material together with any supporting system including mesh reinforcement and a
specified primer and top coat if applicable
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3.1.5
fire protection
protection afforded to the steel member by the fire protection system such that the temperature of
the steel member is limited throughout the period of exposure to fire
3.1.6
test specimen
steel bar plus the fire protection system under test
3.1.7
fire protection thickness
thickness of a single layer fire protection system; or combined thickness of all layers of a multilayer
fire protection system; or mean dry film thickness of the fire protection coating excluding primer and
top coat
Note 1 to entry: The thickness of elements of the supporting system or joint cover strips are not included in
the fire protection thickness.
3.1.8
stickability
ability of a fire protection material to remain sufficiently coherent and in position for a well-defined
range of deformations, furnace and steel temperatures, such that its ability to provide fire protection
is not significantly impaired
3.1.9
maximum steel temperature
highest average temperature recorded at any measurement station
3.1.10
section factor
ratio of the fire exposed outer perimeter area of the steel bar per unit length, to its cross sectional
volume per unit length
3.2 Symbols and units
Symbol Unit Description
d mm intermediate protection thickness
int
d mm maximum protection thickness
max
d mm minimum protection thickness
min
interpolated thickness of fire protection material for a fire
d mm
p
performance period t
t min fire performance period
time for bar with the intermediate protection thickness to reach the
t min
int
required temperature
time for bar with the maximum protection thickness to reach the
t min
max
required temperature
time for bar with the minimum protection thickness to reach the
t min
min
required temperature
s mm required dimension
p
8
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EN 13381-10:2020 (E)
Symbol Unit Description
s mm intermediate dimension
int
s mm maximum dimension
max
s mm minimum dimension
min
Kd protection thickness range factor
K dimension range factor
s
D mm bar diameter
D mm minimum bar diameter
min
D mm maximum bar diameter
max
D mm intermediate bar diameter
int
4 Test equipment
4.1 General
The furnace and test equipment shall conform to that specified in EN 1363-1 where appropriate.
4.2 Furnace
The furnace shall permit the dimensions of the test specimens, their installation within the test
furnace and their exposure to heating to be as specified in EN 1363-1.
5 Test procedures
5.1 General
A number of steel bars, protected by the fire protection system, are heated in a furnace according to
the protocol given in EN 1363-1.
The tests shall be continued until the steel temperature reaches the maximum value commensurate
with application of the data.
Where several test specimens are tested simultaneously, care shall be taken that each is adequately
and similarly exposed to the specified test conditions.
The procedures given in EN 1363-1 shall be followed in the performance of this test unless specific
contrary instructions are given in this document.
The test sections shall be chosen to suit the scope of the assessment.
5.2 Support conditions
Unloaded steel bars shall be supported horizontally or vertically within the furnace such that they are
allowed to expand unrestrained.
5.3 Number of test specimens
For unloaded tests, there shall be 9 bars with dimensions to suit the scope of the assessment; the
principle of selecting the specimens shall be based on the details presented in 5.7. For loaded testing,
there shall be one loaded and one unloaded bar.
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5.4 Size of test specimens
The steel bars for unloaded testing shall have a minimum exposed length of 1 000 mm. Steel bars
tested under load shall have an exposed length of 2 000 mm.
5.5 Construction of steel test specimens
5.5.1 Steel specification
The grade of steel used shall be any structural grade (S designation except S185) according to the
EN 10025 series.
The actual dimensions of the steel bar shall be measured.
5.5.2 Surface treatment and application of the fire protection material
The surface of the steel shall be prepared and the fire protection system shall be applied to the bars
in a manner representative of practice and in accordance with the manufacturer's recommendations.
5.6 Composition of fire protection materials
5.6.1 General
The composition, dimensions, verification and properties of the fire prot
...
SLOVENSKI STANDARD
oSIST prEN 13381-10:2018
01-december-2018
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Test methods for determining the contribution to the fire resistance of structural members
- Part 10: Applied protection to solid steel bars in tension
Prüfverfahren zur Bestimmung des Beitrages zum Feuerwiderstand von tragenden
Bauteilen - Teil 10: Brandschutzmaßnahmen für Stahl-Vollstäbe unter
Zugbeanspruchung
Méthodes d’essai pour déterminer la contribution à la résistance au feu des éléments de
construction - Partie 10 : Protection appliquée aux barres d’acier pleines précontraintes
(tirants)
Ta slovenski standard je istoveten z: prEN 13381-10
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
91.080.13 Jeklene konstrukcije Steel structures
oSIST prEN 13381-10:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 13381-10:2018
DRAFT
EUROPEAN STANDARD
prEN 13381-10
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2018
ICS 13.220.50; 91.080.13
English Version
Test methods for determining the contribution to the fire
resistance of structural members - Part 10: Applied
protection to solid steel bars in tension'.
Méthodes d'essai pour déterminer la contribution à la Prüfverfahren zur Bestimmung des Beitrages zum
résistance au feu des éléments de construction - Partie Feuerwiderstand von tragenden Bauteilen - Teil 10:
10 : Protection appliquée aux barres d'acier pleines Brandschutzmaßnahmen für Stahl-Vollstäbe unter
précontraintes (tirants) Zugbeanspruchung
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 127.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13381-10:2018 E
worldwide for CEN national Members.
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Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative References . 7
3 Terms and definitions, symbols and units . 7
3.1 Terms and definitions . 7
3.2 Symbols and units. 8
4 Test equipment. 9
4.1 General . 9
4.2 Furnace . 9
5 Test procedures . 9
5.1 General . 9
5.2 Support conditions . 9
5.3 Number of test specimens . 9
5.4 Size of test specimens . 10
5.5 Construction of steel test specimens . 10
5.5.1 Steel specification . 10
5.5.2 Surface treatment and application of the fire protection material . 10
5.6 Composition of fire protection materials . 10
5.6.1 General . 10
5.6.2 Thickness of applied reactive protection materials . 10
5.7 Selection of test specimens . 10
6 Installation of the test specimens . 12
6.1 Test specimen installation patterns . 12
6.2 Installation of the steel bars . 13
6.3 Furnace Load . 13
7 Conditioning of the test specimens . 13
8 Application of instrumentation . 13
8.1 General . 13
8.2 Instrumentation for measurement and control of furnace temperature . 13
8.2.1 General . 13
8.2.2 Furnace temperature in the region of test specimens . 13
8.3 Instrumentation for the measurement of steel temperatures . 14
8.4 Instrumentation for the measurement of pressure . 14
9 Test procedure . 14
9.1 General . 14
9.2 Furnace temperature and pressure . 14
9.3 Temperature of steelwork . 15
9.4 Observations . 15
9.5 Termination of test . 15
10 Test results. 15
10.1 Acceptability of test results. 15
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10.2 Presentation of test results in the test report . 15
11 Assessment . 16
11.1 General . 16
11.2 Assessment procedure for thermal performance . 16
12 Report of the assessment . 16
13 Limits of the applicability of the results of the assessment . 17
13.1 General . 17
13.2 Range in fire protection thickness . 17
13.3 Range in dimensions . 17
Annex A (normative) Linear interpolation analysis . 20
Annex B (normative) Loaded test . 26
B.1 General . 26
B.2 Test equipment . 26
B.3 Test specimens . 26
B.4 Application of instrumentation . 26
B.5 Installation of test specimens . 26
B.6 Application of load . 26
B.7 Correction of data . 27
Annex C (normative) Maximum thickness selection and stickability correction for
reactive coatings . 28
Annex D (informative) A-deviation (for Germany) . 29
Bibliography . 30
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European foreword
This document (prEN 13381-10:2016) 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 has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association.
This European Standard is complimentary and supportive to EN 13381-4 and EN 13381-8.
It 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 series are:
— Part 1: Horizontal protective members.
— Part 2: Vertical protective members.
— Part 3: Applied protection to concrete members.
— Part 4: Applied passive protection to steel members.
— Part 5: Applied protection to concrete/profile sheet steel and composite members.
— Part 6: Applied protection to concrete filled hollow steel columns.
— Part 7: Applied protection to timber members.
— Part 8: Applied reactive protection to steel members.
— Part 9: Applied fire protection systems to steel beams with web openings.
All the above Standards were prepared under a Standardization Request given to CEN by the
European Commission and the European Free Trade Association. However, whilst this European
Standard is complimentary and supportive to EN 13381-4 and EN 13381-8, it falls outside of the
scope of that Standardization Request and its results cannot be used as a basis of any European
Classification for Resistance to Fire. It does, however, provide a valuable common basis for the fire
protection industry to evaluate products and for national authorities to determine a product’s
suitability to provide an appropriate level of fire protection to steel members in tension.
Attention is drawn to the A-deviation, in accordance Annex E of the CEN/CENELEC Internal
Regulations Part 2: 2017, granted to DIN by virtue of the evidence presented in Annex D that
indicates the existence of a conflicting national methodology supporting existing regulatory
requirements in Germany.
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Introduction
The evaluation of a product's capability to provide fire protection performance to I or H section, or
hollow section, columns and beams is undertaken by test and assessment procedures detailed in
EN 13381-4 for passive (non-reactive) fire protection products and in EN13381-8 for reactive
(intumescent) fire protection products.
The scopes of both the above standards specifically exclude the evaluation of solid bars used as
tension members. This standard, therefore, provides supplementary test and assessment procedures
to those given in EN13381-4 and EN13381-8 to extend a product's scope of application to cover
solid circular or rectangular bars used as tension members. It is equally applicable to passive and
reactive fire protection products.
The evaluation represents an assessment of a product's fire insulation performance across a range of
solid circular and/or rectangular cross section bars on the basis of tests on unloaded specimens and
where appropriate loaded specimens. At the point of failure the strain generated on the bottom
flange of a loaded beam during testing to EN13381-4 or EN13381-8 is greater than that produced in
circular or rectangular bars in tension. Also, the strain generated during loaded column testing is
similar to that generated in circular or rectangular bars in tension.
In addition, recent testing of loaded and unloaded bars protected with reactive coatings has shown
that the benefit of a loaded test is very much dependant on product thickness; increased thickness of
product reduces the difference between loaded and unloaded testing. A minimum generic thickness
cannot be specified, however, as this is product dependent. Within EN13381-8 product stickability is
determined from loaded beam and/or loaded column testing at intended maximum product
thickness. Therefore, where the scope of testing in this Standard uses lower thicknesses then loaded
testing in accordance with Annex B is to be carried out.
In all cases, the maximum protection thickness tested on unloaded bars should not be greater than
the maximum from loaded beams, columns or hollow columns tested to EN13381-8 . If higher
thicknesses are required to provide any level of fire protection performance, then this should be
validated on the basis of testing loaded bars in accordance with Annex B of this Standard.
For passive fire protection products, similar loaded tests are only required when the system fixing
details to a tension member are not considered to fairly represent those used in the products
EN13381-4 evaluation.
An appropriate supplementary loaded test is, therefore, included in this Standard as a Normative
Annex B to be applied only when required as detailed above.
Caution: The attention of all persons concerned with managing and carrying out this fire resistance
test, is drawn to the 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 should be made and safety precautions
should be identified and provided. Written safety instructions should be issued with the
manufacturers health and safety product data sheet.
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 standard should be followed.
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1 Scope
This document specifies a fire test method and an assessment procedure for determining the
contribution of fire protection systems to the fire resistance performance of circular and rectangular
steel bars used as tension members.
This document applies to fire protection materials that have already been tested and assessed in
accordance with EN 13381-4 or EN 13381-8. If testing to EN 13381-4 or EN 13381-8 has not been
carried out then loaded testing shall be carried out in accordance with Annex B using a minimum
length of 2 000 mm.
For other section shapes such as angles, channels and flats, reference should be made to EN 13381-4
and EN 13381-8. This document does not include steel or any other cold formed bar used as
reinforcement in concrete construction.
For other solid bar geometries such as oval or triangular cross section, these should be subject to a
separate test package in accordance with the principles of Clause 5 of this document.
Fire protection performance is determined by testing of unloaded tension members, although
additional loaded test evidence may be required for certain product types subject to certain
conditions specified in the document.
The method is applicable to all fire protection systems used for the protection of solid bar up to a
maximum diameter of 130 mm and includes sprayed fire protection, reactive coatings, cladding
protection systems and multi-layer or composite fire protection materials. In the case of rectangular
bar, the maximum side length should be limited to 130mm with a maximum aspect ratio of 2:1
against the shorter side length. For dimensions greater than 130mm it is appropriate to use
rectangular or circular hollow sections tested and assessed in accordance with EN 13381-4 and
EN 13381-8 provided they have been tested in the same orientation.
The evaluation is designed to cover a range of thicknesses of the applied fire protection material, a
range of steel bar dimensions, a range of specified temperatures and a range of valid fire protection
periods.
The test method is applicable to fire protection systems which are intimately in contact with the bar,
or which include an airspace between the bar and the protection system as given in EN 13381-4.
This document also provides the assessment procedure, which prescribes the analysis of the test
data and gives guidance on the procedures to undertake interpolation.
This document caters for testing in both vertical and horizontal orientations. Results from
horizontally orientated bar may be applied to any orientation, whilst results from vertically
orientated bar should only be used for horizontal bars when the data has been corrected in
accordance with Annex C.
This document gives the fire test procedures, carried out to provide data on the thermal
characteristics of the fire protection system, when exposed to the standard temperature/time curve
specified in Clause 5.1.1 of EN 1363-1.
The assessment procedure is used to establish:
a) on the basis of data derived from testing steel bar, any practical constraints on the use of the fire
protection system under fire test conditions (the physical performance);
b) on the basis of the temperature data derived from testing steel bar the thermal properties of the
fire protection system (the thermal performance).
The limits of applicability of the results of the assessment arising from the fire test are defined
together with application of the results to different steel types and sizes over the range of
thicknesses of the applied fire protection system tested.
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2 Normative References
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
EN 1363-1, Fire resistance tests - Part 1: General Requirements
EN 10025-1, Hot rolled products of structural steels - Part 1: General technical delivery conditions
EN 13381-4, Test methods for determining the contribution to the fire resistance of structural
members - Part 4: Applied passive protection to steel members
EN 13381-8, Test methods for determining the contribution to the fire resistance of structural
members - Part 8: Applied reactive protection to steel members
EN ISO 13943, Fire safety - Vocabulary (ISO 13943)
ISO 8421-2, Fire protection — Vocabulary — Part 2: Structural fire protection
3 Terms and definitions, symbols and units
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1363-1, EN ISO 13943 and
ISO 8421-2, and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
steel bar
circular or rectangular solid bar composed entirely of steel with a consistent cross sectional size
throughout its length
3.1.2
reactive fire protection material
reactive material which is specifically formulated to provide a chemical reaction upon heating such
that its physical form changes and in so doing provides fire protection by thermal insulative and
cooling effect
3.1.3
passive fire protection material
material which do not change its physical form on heating, providing protection by virtue of its
physical or thermal properties
Note 1 to entry: They may include materials containing water which, on heating evaporates to produce
cooling effects.
3.1.4
fire protection system
fire protection material together with any supporting system including mesh reinforcement and a
specified primer and top coat if applicable
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3.1.5
fire protection
protection afforded to the steel member by the fire protection system such that the temperature of
the steel member is limited throughout the period of exposure to fire
3.1.6
test specimen
steel bar plus the fire protection system under test
3.1.7
fire protection thickness
thickness of a single layer fire protection system; or combined thickness of all layers of a multilayer
fire protection system; or mean dry film thickness of the fire protection coating excluding primer
and top coat
Note 1 to entry: The thickness of elements of the supporting system or joint cover strips are not included in
the fire protection thickness.
3.1.8
stickability
ability of a fire protection material to remain sufficiently coherent and in position for a well-defined
range of deformations, furnace and steel temperatures, such that its ability to provide fire protection
is not significantly impaired
3.1.9
maximum steel temperature
highest average temperature recorded at any measurement station
3.1.10
section factor (of rectangular steel bar)
ratio of the fire exposed outer perimeter area of the steel bar per unit length, to its cross sectional
volume per unit length
3.2 Symbols and units
Table 1 — Symbols and units
Symbol Unit Description
d mm intermediate protection thickness
int
d mm maximum protection thickness
max
dmin mm minimum protection thickness
interpolated thickness of fire protection material for a fire
d mm
p
performance period t
t min fire performance period
time for bar with the intermediate protection thickness to reach the
t min
int
required temperature
time for bar with the maximum protection thickness to reach the
t min
max
required temperature
time for bar with the minimum protection thickness to reach the
t min
min
required temperature
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Symbol Unit Description
s mm required dimension
p
s mm intermediate dimension
int
s mm maximum dimension
max
smin mm minimum dimension
K protection thickness range factor
d
K dimension range factor
s
D mm bar diameter
D mm minimum bar diameter
min
D mm maximum bar diameter
max
D mm intermediate bar diameter
int
4 Test equipment
4.1 General
The furnace and test equipment shall conform to that specified in Clause 5 of EN 1363-1.
4.2 Furnace
The furnace shall permit the dimensions of the test specimens to be exposed to heating, as specified
in Clause 5 and their installation within the test furnace to be as specified in Clause 6.
5 Test procedures
5.1 General
A number of steel bars, protected by the fire protection system, are heated in a furnace according to
the protocol given in Clause 5 of EN 1363-1.
The tests shall be continued until the steel temperature reaches the maximum value commensurate
with application of the data.
Where several test specimens are tested simultaneously, care shall be taken that each is adequately
and similarly exposed to the specified test conditions.
The procedures given in EN 1363-1 shall be followed in the performance of this test unless specific
contrary instructions are given in this standard.
The test sections shall be chosen to suit the scope of the assessment.
5.2 Support conditions
Unloaded steel bars shall be supported horizontally or vertically within the furnace such that they
are allowed to expand unrestrained.
5.3 Number of test specimens
For unloaded tests there shall be 9 bars with dimensions to suit the scope of the assessment, the
principle of selecting the specimens shall be based on the details presented in 5.7. For loaded testing
there shall be one loaded and one unloaded bar.
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