SIST EN 1364-6:2025
(Main)Fire resistance tests for non-loadbearing elements - Part 6: Open-state cavity barriers
Fire resistance tests for non-loadbearing elements - Part 6: Open-state cavity barriers
This test method specifies methods for determining the fire resistance of open-state cavity barriers and is to be used in conjunction with EN 1363-1.
This document is applicable to non-loadbearing vertically or horizontally oriented open-state cavity barriers, which are designed to close and provide fire separation in the event of fire.
Open-state cavity barriers in facades, where the fire exposure comes as a result of a breaking window and allowing a developed fire to come into contact with the façade, can be tested to the optional "flame" criteria.
This document is not applicable to cavity barriers containing penetration seals, which are covered by EN 1366-3.
This document is not applicable to closed cavity barriers, which are covered by EN 1366-4.
Feuerwiderstandsprüfungen für nichttragende Bauteile - Teil 6: Hohlraum-Brandsperren
Dieses Prüfverfahren legt Verfahren zur Bestimmung des Feuerwiderstands von offenen Hohlraum-Brandsperren fest und ist für die Verwendung in Verbindung mit EN 1363 1 vorgesehen.
Dieses Dokument ist anwendbar auf nichttragende vertikal oder horizontal ausgerichtete, offene Hohlraum-Brandsperren, die sich im Brandfall schließen und als Brandsperre dienen sollen.
Offene Hohlraumabschlüsse in Fassaden, bei denen die Brandeinwirkung durch ein zerbrechendes Fenster entsteht und ein sich entwickelndes Feuer mit der Fassade in Berührung kommen kann, können entsprechend der optionalen „Flammen“-Kriterien geprüft werden.
Dieses Dokument ist nicht anwendbar für Hohlraum-Brandsperren mit Abschottungen, die durch EN 1366 3 abgedeckt sind.
Dieses Dokument ist nicht anwendbar für geschlossene Hohlraum-Brandsperren, die durch EN 1366 4 abgedeckt sind.
Essais de résistance au feu des éléments non porteurs - Partie 6 : Dispositifs de recoupement de lame d’air
La présente méthode d’essai spécifie des méthodes permettant de déterminer la résistance au feu des dispositifs de recoupement de lame d’air ouverts en situation normale. Elle est destinée à être utilisée conjointement avec l’EN 1363-1.
Le présent document s’applique aux dispositifs de recoupement de lame d’air ouverts en situation normale non porteurs, orientés verticalement ou horizontalement, qui sont conçus pour se fermer et assurer un cloisonnement coupe-feu en cas d’incendie.
Les dispositifs de recoupement de lame d’air ouverts en situation normale installés dans les façades, où l’exposition au feu résulte d’une fenêtre cassée et permet à un incendie développé d’entrer en contact avec la façade, peuvent être soumis à essai conformément aux critères de résistance aux flammes facultatifs.
Le présent document ne s’applique pas aux dispositifs de recoupement de lame d’air contenant des calfeutrements de trémies qui sont couverts par l’EN 1366-3.
Le présent document ne s’applique pas aux dispositifs passifs de recoupement de lame d’air qui sont couverts par l’EN 1366-4.
Preskusi požarne odpornosti nenosilnih elementov - 6. del: Zapore v odprtem stanju
Ta preskusna metoda določa načine za ugotavljanje požarne odpornosti zapor v odprtem stanju in se uporablja v povezavi s standardom EN 1363-1.
Ta dokument se uporablja za nenosilne navpično ali vodoravno usmerjene zapore v odprtem stanju, ki so zasnovane za zapiranje in zagotavljanje požarne ločitve v primeru požara.
Zapore v odprtem stanju na fasadah, kjer je izpostavljenost ognju posledica razbitja okna, zaradi česar pride požar v stik s fasado, je mogoče preskusiti glede na neobvezna merila »plamena«.
Ta dokument se ne uporablja za zapore s tesnitvami preboja, ki so zajete v standardu EN 1366-3.
Ta dokument se ne uporablja za zaprte zapore, ki so zajete v standardu EN 1366-4.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2025
Preskusi požarne odpornosti nenosilnih elementov - 6. del: Zapore v odprtem
stanju
Fire resistance tests for non-loadbearing elements - Part 6: Open-state cavity barriers
Feuerwiderstandsprüfungen für nichttragende Bauteile - Teil 6: Hohlraum-Brandsperren
Essais de résistance au feu des éléments non porteurs - Partie 6 : Dispositifs de
recoupement de lame d’air
Ta slovenski standard je istoveten z: EN 1364-6:2025
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
91.060.99 Drugi stavbni elementi Other elements of buildings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 1364-6
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2025
EUROPÄISCHE NORM
ICS 13.220.50; 91.060.99
English Version
Fire resistance tests for non-loadbearing elements - Part 6:
Open-state cavity barriers
Essais de résistance au feu des éléments non porteurs - Feuerwiderstandsprüfungen für nichttragende
Partie 6 : Dispositifs de recoupement de lame d'air Bauteile - Teil 6: Hohlraum-Brandsperren
ouverts en situation normale
This European Standard was approved by CEN on 1 December 2024.
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, Türkiye 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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1364-6:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Test equipment . 8
5 Test conditions . 8
5.1 Heating conditions . 8
5.2 Pressure conditions . 9
5.2.1 General. 9
5.2.2 Open-state cavity barriers . 9
6 Test specimen . 9
6.1 General. 9
6.2 Size . 9
6.3 Number . 9
6.4 Design . 9
6.4.1 General. 9
6.4.2 Test configuration . 10
6.4.3 Boundary/restraint conditions . 10
6.5 Construction . 10
6.6 Verification . 10
7 Installation of test specimen . 10
7.1 General. 10
7.2 Standard supporting construction . 10
7.2.1 General. 10
7.2.2 Test specimens mounted in wall constructions . 10
7.2.3 Test specimens mounted in floor constructions . 10
7.3 Splice locations for open-state cavity barriers . 11
8 Conditioning . 11
9 Application of instrumentation . 11
9.1 Thermocouples . 11
9.1.1 Furnace thermocouples (plate thermometers) . 11
9.1.2 Unexposed surface thermocouples . 11
9.2 Pressure . 12
10 Test procedure . 12
10.1 General. 12
10.2 Furnace control . 12
10.3 Evaluation of integrity . 12
10.4 Observations during the test . 12
10.5 Termination of test . 12
11 Performance criteria . 13
11.1 General . 13
11.2 Open-state cavity barriers . 13
11.2.1 Insulation . 13
11.2.2 Integrity . 13
11.3 Expression of results . 13
12 Test report . 13
12.1 General . 13
12.2 Reports of tests undertaken on open-state cavity barriers . 13
13 Field of direct application of the test results . 14
13.1 Open-state cavity barriers . 14
13.1.1 Supporting constructions . 14
Annex A (informative) Background and testing philosophy of cavity barriers . 16
Bibliography . 18
European foreword
This document (EN 1364-6:2025) 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 August 2025 and conflicting national standards shall be
withdrawn at the latest by August 2025.
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 has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
The test method is needed in support of ETAG 026-5 for cavity barriers.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations 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, Türkiye and the United
Kingdom.
Introduction
Cavity barriers are provided within buildings to restrict the spread of smoke and fire in concealed spaces.
Cavity barriers can be ‘closed’ e.g. in roof voids, under raised or hollow floors, between the inner and
outer layers of walls such as in timber framed construction; or they can be ‘open’ e.g. as used in ventilated
facade systems, roof eaves, rain screen cladding systems.
This document describes tests to measure the ability of a representative specimen of an open-state cavity
barrier to resist the spread of fire from one side to another. A representative sample of a cavity barrier is
exposed to a specified regime of heating and pressure. The performance of the test specimen is monitored
on the basis of criteria in EN 1363-1. The fire resistance of the tested construction is expressed as the
time for which the appropriate criteria have been satisfied.
The principles embodied in this method follow those embodied in EOTA TR31 the fire resistance test for
closed cavity barriers published in 2008. However, TR31 is not applicable to open-state cavity barriers
and consequently this method has had to be adapted to include these.
Testing of closed cavity barriers is not in the scope of this document. Test methods for closed cavity
barriers are covered by EN 1366-4. Testing of large-scale closed cavity barriers are covered by
EN 1364-1.
Reference scenario and limitations:
Closed cavity barriers whose function is to close a gap between fire resistant elements of building
structure fall within the scope of the small room fire scenario where ISO 834-1 has been recognized as
the reference fire resistance test.
For open-state cavity barriers e.g. those used in ventilated facades, rain screens and roof eaves; a
European reference scenario has not yet been established. Work is on-going to develop a full-scale façade
test and it is expected that this method will be correlated to that full-scale test. Consequently, for the time
being results of tests to this document cannot be used to imply performance of an external facade system
in which the open-state cavity barrier is included. The test results can be used as supplementary evidence
of cavity barrier performance in façade systems already accepted by current local regulations. Further
information is given in Annex A.
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 may be evolved during the test. Mechanical and operation hazards can also arise during
the construction of the test elements or structures, their testing and 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 always follow written safety
instructions.
1 Scope
This test method specifies methods for determining the fire resistance of open-state cavity barriers and
is intended to be used in conjunction with EN 1363-1.
This document is applicable to non-loadbearing vertically or horizontally oriented open-state cavity
barriers, which are designed to close and provide fire separation in the event of fire.
Open-state cavity barriers in facades, where the fire exposure comes as a result of a breaking window
and allowing a developed fire to come into contact with the façade, can be tested to the optional “flame”
criteria.
This document is not applicable to cavity barriers containing penetration seals, which are covered by
EN 1366-3.
This document is not applicable to closed cavity barriers, which are covered by EN 1366-4.
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 13501-2, Fire classification of construction products and building elements - Part 2: Classification using
data from fire resistance and/or smoke control tests, excluding ventilation services
EN ISO 13943, Fire safety — Vocabulary (ISO 13943)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1363-1, EN ISO 13943 and the
following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1
concealed space
space in a building where fire may develop or pass through that is not normally used or accessible by
humans
3.2
closed cavity barrier
non-loadbearing vertically or horizontally oriented element designed to provide fire separation in a
concealed space (cavity)
Note 1 to entry: Closed cavity barriers will prevent airflow and drainage of water in its quiescent state.
3.3
splice
connection or junction between or within the length of a linear gap seal where it is being used as a cavity
barrier
3.4
open cavity barrier
non-loadbearing vertically or horizontally oriented element designed to ventilate and provide fire
separation in a concealed space (cavity)
Note 1 to entry: Open-state cavity barriers allow ventilation and drainage in the passive state, but which either
close in a fire, or are already fire resisting in the open state, thus providing fire separation in the cavity.
3.5
facade system
system used to protect the outside vertical envelope of a building against weather exposure and fire
3.6
open cavity barrier vent area
open part of the cavity barrier in the cavity barriers passive state
Note 1 to entry: Width of this area is expressed in mm (see Figure 1 X-B).
3.7
sustained flaming
continuous flaming for a period of time greater than 10 s
3.8
passive state
non-reactive state where the full free vent area is available for ventilation/drainage
3.9
activated state
post-fire exposure state where the free vent area is closed and the cavity barrier has readings for
insulation that are within the maximum temperature limits
3.10
activation time
time from t=0 until the activated state has been reached
3.11
cavity barrier width
dimension B as illustrated in Figure 1
3.12
cavity width
dimension X as illustrated in Figure 1
3.13
cavity barrier length
dimension Y as illustrated in Figure 1
3.14
cavity barrier height
dimension Z as illustrated in Figure 1
Key
B cavity barrier width
X cavity width
Y cavity barrier length
Z cavity barrier height
Figure 1 — Dimensions of a cavity barrier
4 Test equipment
In addition to the test equipment specified in EN 1363-1, it is required that for open-state cavity barriers
the internal dimensions of the test furnace shall be such that a distance of at least 200 mm exists between
the long edge of the open-state cavity barrier and the wall of the furnace.
The size of the furnace required depends on the nominal width of the open-state cavity barrier and is
given in Table 1 below. See also 6.2.
Table 1 — Minimum size of test furnace
Nominal width of open-state cavity
Minimum size of furnace required
barrier
< 100 mm 1 m × 1 m × > 0,75 m deep
101 mm up to 300 mm 10 times nominal width of cavity barrier × > 0,75 m deep
> 300 mm 3 m × 3 m × > 0,75 m deep
See EN 1363-1, and if applicable EN 1363-2.
5 Test conditions
5.1 Heating conditions
The heating conditions and the furnace atmosphere shall conform to those given in EN 1363-1.
5.2 Pressure conditions
5.2.1 General
The pressure conditions and the furnace atmosphere shall conform to those given in EN 1363-1 unless
modified as follows: (see 5.2.2).
5.2.2 Open-state cavity barriers
For open-state cavity barriers the furnace pressure shall be monitored and controlled so that 5 min after
the commencement of the test, the furnace pressure shall be (20 ± 5) Pa at a position (100 ± 10) mm
below the bottom face of the cavity barrier (horizontal orientation) or 100 mm below the top of the
furnace (vertical orientation). Ten minutes after the commencement of the test, the furnace pressure shall
be (20 ± 3) Pa. at a position (100 ± 10) mm below the bottom face of the open-state cavity barrier
(horizontal orientation) or 100 mm below the top of the furnace (vertical orientation).
Laboratories shall aim to achieve the specified pressures as s
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