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oSIST prEN 13381-1:2009
01-februar-2009
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Test methods for determining the contribution to the fire resistance of structural members
- Part 1: Horizontal protective membranes
Prüfverfahren zur Bestimmung des Beitrages zum Feuerwiderstand von tragenden
Bauteilen - Teil 1: Horizontal angeordnete Brandschutzbekleidungen
Méthodes d'essai pour déterminer la contribution à la résistance au feu des éléments de
construction - Partie 1 : Membranes de protection horizontales
Ta slovenski standard je istoveten z: prEN 13381-1
ICS:
13.220.50 Požarna odpornost Fire-resistance of building
gradbenih materialov in materials and elements
elementov
91.080.01 Gradbene konstrukcije na Structures of buildings in
splošno general
oSIST prEN 13381-1:2009 en,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 13381-1:2009
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oSIST prEN 13381-1:2009
EUROPEAN STANDARD
DRAFT
prEN 13381-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2008
ICS Will supersede CEN/TS 13381-1:2005
English Version
Test methods for determining the contribution to the fire
resistance of structural members - Part 1: Horizontal protective
membranes
Méthodes d'essai pour déterminer la contribution à la Prüfverfahren zur Bestimmung des Beitrages zum
résistance au feu des éléments de construction - Partie 1 : Feuerwiderstand von tragenden Bauteilen - Teil 1:
Membranes de protection horizontales Horizontal angeordnete Brandschutzbekleidungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 127.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the
same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13381-1:2008: E
worldwide for CEN national Members.
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oSIST prEN 13381-1:2009
prEN 13381-1:2008 (E)
Contents Page
Foreword. 4
1 Scope. 5
2 Normative references . 5
3 Terms and definitions, symbols and units. 6
3.1 Terms and definitions. 6
3.2 Symbols and units . 7
4 Test equipment. 7
4.1 General. 7
4.2 Furnace . 7
4.3 Loading equipment. 7
5 Test conditions. 7
5.1 General. 7
5.2 Support and restraint conditions . 8
5.2.1 Standard conditions . 8
5.2.2 Other support and restraint conditions. 8
5.3 Loading conditions. 8
6 Test specimens . 9
6.1 General. 9
6.2 Fixtures and fittings. 9
6.3 Horizontal protective membranes . 9
6.4 Structural building members supporting horizontal protective membranes . 10
6.4.1 General principles. 10
6.4.2 Standard horizontal structural building members . 11
6.5 Properties of test materials. 12
6.6 Verification of the test specimen. 12
6.7 Optional and additional steel plates and/or plate thermometers within the cavity . 12
7 Installation of the test construction. 13
8 Conditioning . 13
9 Application of instrumentation. 13
9.1 General. 13
9.2 Instrumentation for measurement of furnace temperature . 13
9.3 Instrumentation for measurement of specimen temperature. 13
9.3.1 General. 13
9.3.2 Instrumentation for measuring cavity temperature. 13
9.3.3 Instrumentation for measuring surface temperatures . 14
9.3.4 Optional and supplementary instrumentation for measuring temperature . 14
9.4 Instrumentation for measurement of pressure. 15
9.5 Instrumentation for measurement of deflection . 15
9.6 Instrumentation for measurement of applied load . 15
10 Test procedure . 16
10.1 General. 16
10.2 Furnace temperature and pressure. 16
10.3 Application and control of load . 16
10.4 Temperatures of test specimen. 16
10.5 Deflection. 16
10.6 Observations . 16
10.7 Termination of the test . 16
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11 Test results . 16
11.1 Acceptability of test results . 16
11.2 Presentation of test results. 17
12 Test report . 17
13 Assessment . 18
13.1 General. 18
13.2 Assessment of loadbearing capacity. 18
13.2.1 General. 18
13.2.2 Reference temperature curve: cavity temperatures. 18
13.2.3 Reference temperature curve: surface temperatures (steel beams or
steel/concrete slabs). 18
13.2.4 Application of method of limiting temperatures. 19
13.3 Assessment of insulation . 19
13.4 Assessment of data for calculation purposes . 20
14 Report of the assessment for calculations . 20
15 Limits of applicability of the results of the assessment. 21
15.1 Type of structural building member. 21
15.2 Type of concrete . 23
15.3 Type of steel beam. 24
15.4 Type of steel/concrete composite structures . 24
15.5 Type of timber structure. 24
15.6 Height of the cavity. 24
15.7 Exposed width of test specimen . 24
15.8 Properties of the horizontal protective membrane. 24
15.9 Size of panels within the horizontal protective membrane . 24
15.10 Fixtures and fittings. 25
15.11 Gaps between grid members and test frame or walls. 25
Annex A (normative) Exposure to a semi-natural fire . 32
A.1 General. 32
A.2 Semi-natural fire source. 32
A.3 Test equipment. 33
A.3.1 The furnace. 33
A.3.2 Preparation of fire source and heating conditions. 33
A.4 Test conditions. 34
A.5 Test specimen . 34
A.6 Installation of the test specimen . 34
A.7 Conditioning . 34
A.8 Application of instrumentation. 34
A.9 Test procedure . 34
A.10 Test results . 35
A.11 Test report . 35
A.12 The assessment . 35
A.13 The assessment report. 35
Annex B (normative) Measurement of properties of horizontal protective membranes and
components. 36
B.1 General. 36
B.2 Thickness of horizontal protective membrane and components thereof . 36
B.3 Density of horizontal protective membranes and components thereof. 37
B.4 Moisture content of horizontal protective membrane and components thereof. 38
Bibliography . 39
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oSIST prEN 13381-1:2009
prEN 13381-1:2008 (E)
Foreword
This document (prEN 13381-1:2008) has been prepared by Technical Committee CEN/TC 127 “Fire
safety in buildings”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document will supersede CEN/TS 13381-1:2005.
This standard is one of a series of standards for evaluating the contribution to the fire resistance of
structural members by applied fire protection materials. Other Parts of this standard are:
Part 2: Vertical protective membranes,
Part 3: Applied protection to concrete members,
Part 4: Applied passive protection products to steel members,
Part 5: Applied protection to concrete/profiled sheet steel composite members,
Part 6: Applied protection to concrete filled hollow steel columns,
Part 7: Applied protection to timber members.
The fire protection capacity of the horizontal protective membrane can be nullified by the presence of
combustible materials in the cavity above the membrane. The applicability of the results of the
assessment is limited according to the quantity and position of such combustible materials within that
cavity. The amount of combustible material permissible in the cavity shall be given in national
regulations.
Annexes A and B are normative.
Caution
The attention of all persons concerned with managing and carrying out this fire resistance test, is
drawn to 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 shall be made and safety precautions shall
be identified and provided. Written safety instructions shall be issued. Appropriate training shall be
given to relevant personnel. Laboratory personnel shall ensure that they follow written safety
instructions at all times.
The specific health and safety instructions contained within this European Standard shall be followed.
WARNING: When performing this test method, laboratories shall expect that there may be significant
quantities of smoke released. This smoke release is expected to be very significant where the fire test
involves timber and timber based components. Laboratories shall ensure that appropriate smoke
extraction facilities are provided.
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prEN 13381-1:2008 (E)
1 Scope
This Part of this European Standard specifies a test method for determining the ability of a horizontal
protective membrane, when used as a fire resistant barrier, to contribute to the fire resistance of
horizontal structural building members.
This European Standard contains the fire test which specifies the tests which are carried out whereby
the horizontal protective membrane, together with the structural member to be protected, is exposed
to a fire test according to the procedures defined herein. The fire exposure, to the temperature/time
curve given in EN 1363-1, is applied to the side which would be exposed in practice and from below
the membrane itself.
The test method makes provision, through specified optional additional procedures, for the collection
of data which can be used as direct input to the calculation of fire resistance according to the
processes given within EN 1992-1-2, EN 1993-1-2, EN 1994-1-2 and EN 1995-1-2.
A related test method for determining the contribution to the fire protection of vertical structural
members by vertical protective membranes is given in Part 2 of this standard.
This European Standard also contains the assessment which provides information relative to the
analysis of the test data and gives guidance for the interpretation of the results of the fire test, in terms
of loadbearing capacity criteria of the protected horizontal structural member.
The limits of applicability of the results of the assessment arising from the fire test are defined,
together with permitted direct application of the results to different structures, membranes and fittings.
This European Standard applies only where there is a gap and a cavity between the horizontal
protective membrane and the structural building member. Otherwise the test methods in prEN 13381-
3, prEN 13381-4 or prEN 13381-5, as appropriate, apply.
Tests shall be carried out without additional combustible materials in the cavity.
Annex A gives details of assessing the performance of the ceiling when exposed to a semi-natural
fire.
2 Normative references
The following referenced documents are indispensable for the application 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 1365-2, Fire resistance tests for loadbearing elements — Part 2: Floors and roofs
EN 1992-1-1, Eurocode 2: Design of concrete structures — Part 1-1: General rules and rules for
buildings
EN 1992-1-2, Eurocode 2: Design of concrete structures — Part 1-2: General rules — Structural fire
design
EN 1993-1-1, Eurocode: 3 Design of steel structures — Part 1-1: General rules and rules for buildings
EN 1993-1-2, Eurocode 3: Design of steel structures — Part 1-2: General rules — Structural fire
design
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prEN 13381-1:2008 (E)
EN 1994-1-1, Eurocode 4: Design of composite steel and concrete structures — Part 1-1: General
rules and rules for buildings
EN 1994-1-2, Eurocode 4: Design of composite steel and concrete structures — Part 1-2: General
rules — Structural fire design (including Technical Corrigendum 1:1995)
EN 1995-1-1, Eurocode 5: Design of timber structures — Part 1-1: General rules and rules for
buildings
EN 1995-1-2, Eurocode 5: Design of timber structures — Part 1-2: General rules — Structural fire
design
prEN 13381-4, Test methods for determining the contribution to the fire resistance of structural
members — Part 4: Applied protection to steel members
prEN 13381-5, Test methods for determining the contribution to the fire resistance of structural
members — Part 5: Applied protection to concrete/profiled sheet steel composite members
prEN 13381-7, Test methods for determining the contribution to the fire resistance of structural
members — Part 7: Applied protection to timber members
EN ISO 13943, Fire safety — Vocabulary (ISO 13943:2000)
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 European Standard, the terms and definitions given in EN 1363-1,
EN ISO 13943 and ISO 8421-2 and the following apply:
3.1.1
horizontal structural building member
horizontal structural element of building construction which is loadbearing, separating and which is
fabricated from concrete, steel, steel/concrete composite or timber
3.1.2
horizontal protective membrane
any horizontal membrane or ceiling lining plus any supporting framework, hangers, fixings and any
insulation materials which is either suspended from or attached directly to a structural building
member, or is self supporting and fixed beneath a structural building member, and which is intended
to give additional fire resistance to that structural building member
The horizontal protective membrane does not form any part of any loadbearing part of the structure
and can comprise multiple layers of materials
3.1.3
separating gap
distance between the uppermost surface of the horizontal protective membrane and the lowest
surface of the underside of the structural building member
3.1.4
cavity
whole void or voids between the uppermost surface of the horizontal protective membrane and the
highest surface of the underside of the structural building member
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prEN 13381-1:2008 (E)
3.1.5
horizontal protective membrane test specimen
full horizontal protective membrane assembly submitted for test, including typical fixing equipment and
methods and typical features such as insulating materials, light fittings, ventilation ducts and access
panels
3.1.6
fire protection
protection afforded to the structural building member by the horizontal protective membrane system
such that the temperature on the surface of the structural building member and within the cavity is
limited throughout the period of exposure to fire
3.2 Symbols and units
Symbol Unit Designation
L mm Length of the structural building member, plus the horizontal protective
exp
membrane, which is exposed to the furnace.
L mm Centre to centre distance between the supports of the structural building
sup
member tested.
L mm Total length of the main beams or members of the structural building member.
spec
-1
A /V m Section factor of unprotected steel beam (see prEN 13381-4).
m
4 Test equipment
4.1 General
The furnace and test equipment shall be as specified in EN 1363-1.
4.2 Furnace
The furnace shall be designed to permit the dimensions of the test specimen to be exposed to heating
to be as specified in 6.4.1 and its installation to be as described in Clause 7.
4.3 Loading equipment
Loading shall be applied according to EN 1363-1. The loading system shall permit loading, of the
magnitude defined in 5.3, to be uniformly applied along the length and width of the test specimen at
loading points positioned as defined in 5.3.
The loading equipment shall not inhibit the free movement of air above the test specimen and no part
of the loading equipment, other than at the loading points, shall be closer than 60 mm to the
unexposed surface of the test specimen.
5 Test conditions
5.1 General
A horizontal structural building member, including any supporting construction, which carries a
horizontal protective membrane, to be used as a fire resistant barrier against fire from below, is
subjected to predefined loading and to the fire test defined herein.
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The temperature within the cavity and the surface temperature of the structural building member are
measured throughout the test.
Any leakage through the structural floor slab and at the sides of the structure shall be minimized. The
gap between the floor slab and the furnace shall be made tight by e.g. mineral wool pads or similar in
such a way that the slab can deflect vertically.
It is recommended that the test is continued until the mean temperature recorded by all
thermocouples within the cavity reaches the appropriate limiting temperature of the structural building
members used or until any individual temperature recorded within the cavity rises to 750 °C for
concrete, steel, or concrete/profiled steel composite members and 500 °C for timber structural
members.
The procedures given in EN 1363-1 shall be followed in the performance of this test method unless
specific contrary instruction is given. Where required, the semi-natural fire test shall be performed in
accordance with Annex A.
5.2 Support and restraint conditions
5.2.1 Standard conditions
The test specimen shall be tested as a simply supported one way structure with two free edges and
an exposed surface and span as specified in 6.4.1.
It shall be installed to allow freedom for longitudinal movement and deflection using at one side rolling
support(s) and at the other hinge support(s) as shown in Figure 1.
The surface of the bearings shall be smooth concrete or steel plates. The width of the bearings shall
be at least as wide as the beam.
5.2.2 Other support and restraint conditions
Support and restraint conditions differing from the standard conditions specified in 5.2.1 shall be
described in the test report and the validi
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