oSIST prEN 1364-6:2016

SLOVENSKI STANDARD
01-julij-2016
Preskusi požarne odpornosti nenosilnih elementov - 6. del: Zapore votlih
prostorov
Fire resistance tests for non-loadbearing elements - Part 6: 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: prEN 1364-6
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.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2016
ICS 13.220.50; 91.060.99
English Version
Fire resistance tests for non-loadbearing elements - Part 6:
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
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, 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: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1364-6:2016 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 — Additional requirements for open cavity barriers . 7
5 Test conditions . 7
5.1 Heating conditions . 7
5.2 Pressure conditions . 7
5.2.1 General . 7
5.2.2 Cavity Barriers mounted within leaves of walls or in roof voids . 7
5.2.3 Cavity barriers mounted underneath raised access floors . 7
5.2.4 Open cavity barriers . 8
6 Test specimen . 8
6.1 General . 8
6.2 Size . 8
6.3 Number . 8
6.4 Design . 9
6.4.1 General . 9
6.4.2 Test configuration . 9
6.4.3 Boundary/restraint conditions . 9
6.4.4 Penetrating services . 9
6.5 Construction . 9
6.6 Verification . 9
7 Installation of test specimen . 10
7.1 General . 10
7.2 Standard supporting construction . 10
7.2.1 General . 10
7.2.2 Vertically oriented test specimens . 10
7.2.3 Horizontal test specimens . 10
7.2.4 Open cavity barrier specimens . 10
7.3 Splice locations for open cavity barriers . 10
7.4 Non-standard supporting construction . 10
8 Conditioning . 10
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
9.3 Deflection . 12
10 Test procedure . 12
10.1 General . 12
10.2 Furnace control . 12
10.3 Evaluation of integrity criteria . 13
10.4 Observations during the test . 13
10.5 Termination of test . 13
11 Performance criteria . 13
11.1 General . 13
11.2 Cavity barriers used as fire stopping . 13
11.3 Open Cavity Barriers . 13
11.3.1 Insulation . 13
11.3.2 Integrity. 13
11.4 Expression of results . 14
12 Test report . 14
12.1 General . 14
12.2 Reports of tests undertaken on Open cavity barriers . 14
13 Field of direct application of the test results . 14
13.1 closed cavity barriers . 14
13.1.1 General . 14
13.1.2 Extension of width . 14
13.1.3 Extension of height . 15
13.1.4 Supporting constructions . 15
13.2 Open cavity barriers . 15
Annex A (normative) Cavity barriers in under floor voids . 17
A.1 Introduction. 17
A.2 Configuration . 17
A.3 Thermocouples for measuring the maximum temperature rise . 18
A.4 Field of direct application . 19
Annex B (normative) Cavity barriers within walls (e.g. masonry leaves) . 20
B.1 Introduction. 20
B.2 Configuration . 20
B.3 Thermocouples for measuring the maximum temperature rise . 22
B.4 Field of direct application . 22
Annex C (normative) Open cavity barriers . 24
C.1 Principle of test/configuration . 24
C.2 Unexposed surface thermocouples . 24
Annex D (normative) Test configuration for immediate heat exposure using
removable shield . 26
D.1 Use of this annex . 26
D.2 Principle of removable test configuration . 26
D.3 Removable shield . 26
D.4 Test procedure amendments for this test configuration . 26
Annex E (informative) Background and testing philosophy of cavity barriers . 28
E.1 Introduction. 28
E.2 Reference scenarios . 28
E.3 Use of tests for classification . 29
Bibliography . 30
European foreword
This document (prEN 1364-6:2016) 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 mandate given to CEN by the European Commission
and the European Free Trade Association.
CEN TC 127 is the CEN committee for drafting fire test standards in support of the Construction
Products Regulation. The test method is needed in support of ETAG 026-5 for cavity barriers.
Introduction
Cavity barriers are provided within buildings to restrict the spread of smoke and fire in concealed
spaces. Cavity barriers may be ‘closed’ e.g. in roof voids, under raised floors, between the inner
and outer leaves of walls such as in timber framed construction; or they may be ‘open’, for
example as used in ventilated facade systems, roof eaves, and rain screen cladding systems.
The purpose of this test is to measure the ability of a representative specimen of a 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 cavity
barriers and consequently this method has had to be adapted to include these.
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 cavity barriers, for example 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 standard cannot be used to imply
performance of an external facade system in which the open cavity barrier is included. The test
results may be used as supplementary evidence of cavity barrier performance in systems already
accepted by current national regulations. Further information is given in Annex E.
Caution — The attention of all persons concerned with managing and carrying out this fire
resistance test, is drawn to the fact that fire testing may 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 may 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 follow written safety instructions at all times.
1 Scope
This test method specifies a method for determining the fire resistance of cavity barriers and is to
be used in conjunction with EN 1363-1.
This standard is applicable to non-loadbearing vertically or horizontally oriented closed and open
cavity barriers, which are used to provide fire separation to uncompartmented or ventilated
spaces. Cavity barriers are designed to provide fire separating performance and the test method is
therefore based on the standard room fire exposure in EN 1363-1. Open cavity barrier specimens
are installed for test in one of two ways to simulate slow or sudden exposure in use.
This standard is not applicable to cavity barriers containing penetration seals, which are to be
tested in accordance with EN 1366-3.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. 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 1366-3, Fire resistance tests for service installations - Part 3: Penetration seals
EN ISO 13943:2010, Fire safety - Vocabulary (ISO 13943:2008)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1363-1 and
EN ISO 13943:2010 and the following apply.
3.1
concealed space
space in a building where fire could 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)
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 provide fire separation in
a concealed space (cavity)
Note 1 to entry: These are open to allow ventilation and drainage in the cold state, but which either close
in a fire, or are inherently fire resisting providing fire separation in the cavity.
3.5
façade system
system used to protect the outside vertical envelope of a building from the elements
3.6
air gap
space between the back surface of the external wall panels and the outer face of the inner wall or
insulation layer
4 Test equipment — Additional requirements for open cavity barriers
In addition to the test equipment specified in EN 1363-1, it is required that for open 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 cavity barrier and the wall of the furnace.
The size of the furnace required will depend on the nominal width of the open cavity barrier and
is given in Table 1 (see also 6.2).
Table 1 — Open cavity barriers
Nominal width of open cavity
Minimum size of furnace required
barrier
< 100 mm 1 m x 1 m x > 0,75 m deep
> 100 mm up to 300 mm 10 times nominal width of cavity barrier x > 0,75 m deep
> 300 mm 3 m x 3 m x > 0,75 m deep
5 Test conditions
5.1 Heating conditions
The heating conditions and the furnace atmosphere shall conform to those given in EN 1363-1.
For open cavity barriers, an option is provided for the use of a removable shield underneath the
cavity barrier which is removed at 5 min into the test immediately exposing the cavity barrier to
the furnace heating conditions at that time. See Annex E.
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:
5.2.2 Cavity Barriers mounted within leaves of walls or in roof voids
For cavity barriers mounted between the leaves of walls and above suspended ceilings/in loft
spaces, the pressure conditions and the furnace atmosphere shall conform to those given in
EN 1363-1.
5.2.3 Cavity barriers mounted underneath raised access floors
For cavity barriers mounted underneath raised access floors, the following pressure conditions
shall apply:
For plenum heights not greater than 1 m, the pressure in the furnace 100 mm below the soffit
shall be maintained at + 5 Pa (+ 3 Pa) relative to outside the furnace.
For plenum heights greater than 1 m, the pressure in the furnace 100 mm below the soffit shall
be maintained at +3 Pa of a pressure calculated as follows:
p 0,66 h × 8,5 (1)
where:
P = pressure in Pa
h = height of plenum below the raised floor in m
5.2.4 Open cavity barriers
For open 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 should aim to achieve the specified pressures as soon as possible after
commencement of the test. Furnaces should not be run under, for example negative pressure for
the first few minutes and then the pressure only established just before 5 min.
For open cavity barriers tested using the thermal exposure of the removable shield, the pressure
conditions in 5.2.3 might not be met immediately after the removal of the shield. In such cases,
any pressure drop shall be corrected as quickly as possible and in any case within three minutes.
6 Test specimen
6.1 General
The test specimen shall consist of a cavity barrier mounted in a supporting construction.
6.2 Size
If, in practice, the height or width of the product is 3 m or smaller, then that dimension of the test
specimen shall be tested at full size. If any dimension of the construction is greater than 3 m, then
that dimension shall be tested at not less than 3 m.
A typical minimum length to width ratio for an open cavity barrier is 10:1. In order to maintain
this ratio a test furnace of appropriate dimensions shall be used (see Clause 4).
For open cavity barriers, the distance between the long edge open cavity barrier and the outer
perimeter of the heated part of the separating element shall be not less than 200 mm at any point
in order to avoid boundary effects (see Clause 4).
6.3 Number
The number of test specimens shall be as given in EN 1363-1. However, where information is
required under different boundary/exposure conditions or where an asymmetrical product is to
be evaluated, additional tests shall be undertaken for each situation using separate test
specimens. Where a cavity barrier is intended for use in both horizontal and vertical separating
elements, both orientations shall be tested.
=
6.4 Design
6.4.1 General
The test specimen shall be fully representative of the construction used in practice. More than one
type of cavity barrier system may be included in a single test specimen provided the requirements
on space separation and thermal and pressure conditions are met.
Joints or splices for the purposes of erection, construction or expansion, shall be incorporated in
the test specimen. Different jointing systems or splices may be included in a single test specimen
provided that they are both subjected to furnace pressure conditions equal to or greater than
those specified in 5.2.
The design features which influence fire performance should be included to give the widest
application that can be derived from the field of direct application (see Clause 13).
6.4.2 Test configuration
Four test configurations appropriate to the end uses of cavity barriers are considered in this
document:
1. Above suspended ceilings and in lofts and other roof voids to prevent horizontal fire spread.
2. Below raised access floors between the underside of the raised floor and the upper side of the
structural floor slab. Special considerations for testing these are given in Annex A.
3. Fire stopping between leaves of, for example masonry walls to prevent vertical or horizontal
fire spread between the leaves. Special considerations for testing these are given in Annex B.
4. Open cavity barriers installed as part of external walls, for example facades and roof eaves.
Special considerations for testing these are given in Annex C.
6.4.3 Boundary/restraint conditions
The test specimen shall be installed with boundary and restraint conditions representative of
those found in practice.
Where, in practice the width of the product is larger than the front opening of the furnace, one
vertical edge shall be left unrestrained and there shall be a gap of 25 mm to 50 mm between the
free edge of the test specimen and the test frame. This gap shall be packed with a resilient non-
combustible material (e.g. mineral fibre) to provide a seal without restricting freedom of
movement. The remaining edges shall be restrained as in practice.
6.4.4 Penetrating services
In some cases pipes, cables or other services may pass through a cavity barrier. In this case, the
cavity barrier shall be treated as a penetration sealing system and shall be tested in accordance
with EN 1366-3.
6.5 Construction
The test specimen shall be constructed as described in EN 1363-1.
6.6 Verification
Verification of the test specimen shall be carried out as described in EN 1363-1.
7 Installation of test specimen
7.1 General
The test specimen shall be installed in the test frame and, if used, the supporting construction, as
in practice.
Where voids exist within a cavity barrier (e.g. when it is in the form of a tube), the ends shall be
hermetically sealed in order to prevent airflow through the test specimen.
7.2 Standard supporting construction
7.2.1 General
If the size of the test specimen is smaller than the opening in the test frame then it shall be
installed in the test frame using one of the following approaches:
7.2.2 Vertically oriented test specimens
a) Where the height of the test specimen is smaller than the height of the test frame opening, a
plinth shall be provided to reduce the opening to the required height. The plinth shall possess
sufficient stability for the test specimen and shall be selected from one of the rigid standard
supporting constructions in EN 1363-1.
b) Where the width of the test specimen is smaller, a standard supporting construction shall be
provided on the vertical sides of the opening selected from either the rigid or flexible
standard supporting constructions given in EN 1363-1.
7.2.3 Horizontal test specimens
Where the area of the test specimen is smaller than the area of the test frame opening, then the
furnace opening shall be reduced to the area of the test specimen using a suitable construction. In
the absence of horizontal standard supporting construction in EN 1363-1, gas concrete or dense
concrete slabs shall be used for horizontal specimens.
7.2.4 Open cavity barrier specimens
For open cavity barriers, the supporting construction shall comprise either autoclaved aerated
3 3
concrete, density: (650 ± 200) kg/m or dense concrete, density (2,400 ± 200) kg/m .
7.3 Splice locations for open cavity barriers
Where splices (see 3.3) or consecutive lengths of pre-formed components require to be jointed in
practice, a typical joint shall be included. If two methods of joining consecutive lengths of
component(s) are to be incorporated in the same specimen of open-state cavity barrier, then each
method shall be separated by at least 200 mm. All fixing methods including, for example brackets,
each side
...