ISO/TR 834-2:2009
(Main)Fire-resistance tests — Elements of building construction — Part 2: Guidance on measuring uniformity of furnace exposure on test samples
Fire-resistance tests — Elements of building construction — Part 2: Guidance on measuring uniformity of furnace exposure on test samples
ISO/TR 834-2:2009 establishes general principles for measuring the uniformity of furnace exposure of samples tested in accordance with the requirements of ISO 834-1. ISO/TR 834-2:2009 specifies the type and location of instrumentation used to measure the temperature, velocity and oxygen content near the surface of simulated test samples. The surface of the simulated sample facing the furnace is gypsum board secured to cold-formed steel supports. ISO/TR 834-2:2009 does not include requirements for furnace performance.
Essais de résistance au feu — Éléments de construction — Partie 2: Lignes directrices pour la mesure de l'uniformité de l'exposition au feu des échantillons pour essai
General Information
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Standards Content (Sample)
TECHNICAL ISO/TR
REPORT 834-2
First edition
2009-07-01
Fire-resistance tests — Elements of
building construction —
Part 2:
Guidance on measuring uniformity of
furnace exposure on test samples
Essais de résistance au feu — Éléments de construction —
Partie 2: Lignes directrices pour la mesure de l'uniformité de l'exposition
au feu des échantillons pour essai
Reference number
ISO/TR 834-2:2009(E)
©
ISO 2009
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ISO/TR 834-2:2009(E)
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ii © ISO 2009 – All rights reserved
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ISO/TR 834-2:2009(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 1
4 Test equipment . 1
5 Test method. 11
6 Report . 12
Annex A (informative) Commentary . 13
Bibliography . 14
© ISO 2009 – All rights reserved iii
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ISO/TR 834-2:2009(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
In exceptional circumstances, when a technical committee has collected data of a different kind from that
which is normally published as an International Standard (“state of the art”, for example), it may decide by a
simple majority vote of its participating members to publish a Technical Report. A Technical Report is entirely
informative in nature and does not have to be reviewed until the data it provides are considered to be no
longer valid or useful.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO/TR 834-2 was prepared by Technical Committee ISO/TC 92, Fire safety, Subcommittee SC 2, Fire
containment.
ISO 834 consists of the following parts, under the general title Fire-resistance tests — Elements of building
construction:
⎯ Part 1: General requirements
⎯ Part 2: Guidance on measuring uniformity of furnace exposure on test samples [Technical report]
⎯ Part 3: Commentary on test method and test data application [Technical report]
⎯ Part 4: Specific requirements for loadbearing vertical separating elements
⎯ Part 5: Specific requirements for loadbearing horizontal separating elements
⎯ Part 6: Specific requirements for beams
⎯ Part 7: Specific requirements for columns
⎯ Part 8: Specific requirements for non-loadbearing vertical separating elements
⎯ Part 9: Specific requirements for non-loadbearing ceiling elements
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ISO/TR 834-2:2009(E)
Introduction
The purpose of this Technical Report is to recommend a procedure to measure the exposure of a test sample
to a furnace during a test conducted in accordance with ISO 834 (all parts). The furnace exposure is
determined by measuring temperature, air velocity and oxygen concentration at various locations. The
recommended procedure includes the use of low-cost, readily available, lightweight materials to represent the
test sample. The recommended materials minimize the influence of variable moisture content among samples.
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TECHNICAL REPORT ISO/TR 834-2:2009(E)
Fire-resistance tests — Elements of building construction —
Part 2:
Guidance on measuring uniformity of furnace exposure on test
samples
1 Scope
This Technical Report establishes general principles for measuring the uniformity of furnace exposure of
samples tested in accordance with the requirements of ISO 834-1. This Technical Report specifies the type
and location of instrumentation used to measure the temperature, velocity and oxygen content near the
surface of simulated test samples. The surface of the simulated sample facing the furnace is gypsum board
secured to cold-formed steel supports.
This Technical Report does not include requirements for furnace performance.
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.
ISO 834-1, Fire resistance tests — Elements of building construction — Part 1: General requirements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
effective area of furnace opening
furnace opening within the boundaries of the monitoring instrumentation
4 Test equipment
4.1 Supporting construction
4.1.1 The supporting construction shall consist of cold-formed steel supports faced with two layers of
gypsum board a minimum of 16 mm thick intended for use in fire-barrier assemblies on the side facing the
furnace and with a single-layer structural panel a minimum of 18 mm thick on the side facing away from the
furnace.
NOTE 1 Gypsum boards used in fire barrier assemblies are identified as Type X by ASTM C1396 and as Type F by
EN 520.
NOTE 2 Plywood and oriented strand boards are considered typical structural panels.
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ISO/TR 834-2:2009(E)
4.1.2 Construction details with respect to the location of the support channels, gypsum board and the
structural panels are shown in Figures 1 through 6. Figures 1 through 3 apply to horizontal supporting
constructions. Figures 4 through 6 apply to vertical supporting constructions.
4.1.2.1 The construction details assume a horizontal furnace opening of 3 m by 4 m and a vertical
furnace opening of 3 m by 3 m. Modifications to dimensions are necessary for other furnace opening
dimensions.
Dimensions in millimetres
Key
1 perimeter of supporting construction
2 support channels, nine, spaced 450 mm on centre
Figure 1 — Details of horizontal supporting construction —
Layout of support channels
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ISO/TR 834-2:2009(E)
Dimensions in millimetres
Key
1 perimeter of supporting construction
2 inner (first) layer of gypsum board or structural panels on unexposed surface
Figure 2 — Details of horizontal supporting construction —
Layout of inner layer of gypsum board and structural panels
Dimensions in millimetres
Key
1 perimeter of supporting construction
2 outer (second) layer of gypsum board
Figure 3 — Details of horizontal supporting construction —
Layout of outer layer of gypsum board
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ISO/TR 834-2:2009(E)
Dimensions in millimetres
Key
1 perimeter of supporting construction
2 support channels, eight, spaced 400 mm on centre
Figure 4 — Details of vertical supporting construction —
Layout of support channels
Dimensions in millimetres
Key
1 perimeter of supporting construction
2 inner (first) layer of gypsum board or structural panels on unexposed surface
Figure 5 — Details of vertical supporting construction —
Layout of inner layer of gypsum board and structural panels
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ISO/TR 834-2:2009(E)
Dimensions in millimetres
Key
1 perimeter of supporting construction
2 outer layer of gypsum board
Figure 6 — Details of vertical supporting construction —
Layout of outer layer of gypsum board
4.1.3 The cold-formed steel support channels for horizontal supporting construction shall be fabricated from
steel a minimum 1,4 mm thick. The channels shall be C-shaped with a minimum depth of 240 mm, a minimum
flange width of 40 mm and a minim
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