Fire resistance tests -- Elements of building construction

ISO 834-12:2012 specifies the procedures to be followed for determining the fire resistance of non-load-bearing separating elements when exposed to heating on one face when the specimen size is such that a less than full scale fire resistance furnace is justified. This condition is particularly found in the testing of separating elements in transport applications since the end-use dimensions of the barrier products are often smaller than those specified in other parts of ISO 834. Specimen sizes requiring less than full size resistance furnaces are also found when testing elements to be fitted into a separating element, such as pipe penetration systems, ducts, dampers and cable transits. The test is not appropriate for the evaluation of curtain walls (non-load-bearing external walls suspended from the ends of floor slabs) or walls containing doors or glazing. Tests of walls containing doors are covered by ISO 3008; tests of walls containing glazing are covered by ISO 3009. The application of this test to other untested forms of construction is acceptable when the construction complies with the direct field of application as given in ISO 834-12:2012 or when it is subjected to a field of extended application analysis in accordance with ISO/TR 12470.

Essais de résistance au feu -- Éléments de construction

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Status
Published
Publication Date
04-Nov-2012
Current Stage
9093 - International Standard confirmed
Start Date
26-Aug-2020
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ISO 834-12:2012 - Fire resistance tests -- Elements of building construction
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INTERNATIONAL ISO
STANDARD 834-12
First edition
2012-11-01
Fire resistance tests — Elements of
building construction —
Part 12:
Specific requirements for separating
elements evaluated on less than full
scale furnaces
Essais de résistance au feu — Éléments de construction —
Partie 12: Exigences spécifiques pour éléments de séparation évalués
dans des fours de dimensions réduites
Reference number
ISO 834-12:2012(E)
ISO 2012
---------------------- Page: 1 ----------------------
ISO 834-12:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any

means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the

address below or ISO’s member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 834-12:2012(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Symbols and abbreviated terms ........................................................................................................................................................... 2

5 Test equipment....................................................................................................................................................................................................... 2

5.1 Test furnace................................................................................................................................................................................................ 3

6 Test conditions ....................................................................................................................................................................................................... 3

7 Test specimen preparation ........................................................................................................................................................................ 3

7.1 Design ............................................................................................................................................................................................................. 3

7.2 Specimen size ........................................................................................................................................................................................... 3

7.3 Number of test specimens ............................................................................................................................................................. 3

7.4 Specimen conditioning ......... ............................................................................................................................................................ 4

7.5 Specimen installation and restraint ...................................................................................................................................... 4

8 Application of instrumentation ............................................................................................................................................................ 4

8.1 Furnace thermocouples (plate thermometer) ............................................................................................................. 4

8.2 Unexposed specimen thermocouples ................................................................................................................................. 5

8.3 Deflection measurement ................................................................................................................................................................ 5

8.4 Pressure ........................................................................................................................................................................................................ 5

9 Test procedure ........................................................................................................................................................................................................ 5

9.1 Furnace control ...................................................................................................................................................................................... 5

9.2 Measurements and observations ............................................................................................................................................ 6

10 Performance criteria ........................................................................................................................................................................................ 6

11 Validity of the test ................................................................................................................................................................................................ 6

12 Expression of results ........................................................................................................................................................................................ 6

13 Test report ................................................................................................................................................................................................................... 6

Annex A (informative) Direct application of results ............................................................................................................................ 7

Annex B (informative) Guidance for justification for smaller specimen size in less than full scale

fire resistance furnace .................................................................................................................................................................................... 8

Bibliography ................................................................................................................................................................................................................................ 9

© ISO 2012 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 834-12:2012(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.

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 834-12 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 guide to the application of the outputs from the fire-resistance

test [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

— Part 12: Specific requirements for separating elements evaluated on less than full scale furnaces

The following parts are under preparation:

— Part 10: Specific requirements to determine the contribution of applied fire protection materials to

structural elements

— Part 11: Specific requirements for the assessment of fire protection to structural steel elements

iv © ISO 2012 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 834-12:2012(E)
Introduction

This part of ISO 834 contains specific requirements for fire resistance testing which are unique to

the elements of construction described as separating non-loadbearing elements both horizontal and

vertical. The requirements for these non-loadbearing elements are intended to be applied in appropriate

conjunction with the detailed and general requirements contained in ISO 834-1.
© ISO 2012 – All rights reserved v
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 834-12:2012(E)
Fire resistance tests — Elements of building
construction —
Part 12:
Specific requirements for separating elements evaluated
on less than full scale furnaces
1 Scope

This part of ISO 834 specifies the procedures to be followed for determining the fire resistance of non-

load-bearing separating elements when exposed to heating on one face when the specimen size is such

that a less than full scale fire resistance furnace is justified. This condition is particularly found in the

testing of separating elements in transport applications since the end-use dimensions of the barrier

products are often smaller than those specified in other parts of ISO 834. Specimen sizes requiring less

than full size resistance furnaces are also found when testing elements to be fitted into a separating

element, such as pipe penetration systems, ducts, dampers and cable transits.

The test is not appropriate for the evaluation of curtain walls (non-load-bearing external walls suspended

from the ends of floor slabs) or walls containing doors or glazing. Tests of walls containing doors are

covered by ISO 3008; tests of walls containing glazing are covered by ISO 3009.

The application of this test to other untested forms of construction is acceptable when the construction

complies with the direct field of application as given in this part of ISO 834 or when it is subjected to a

field of extended application analysis in accordance with ISO/TR 12470.

NOTE Since ISO/TR 12470 gives only general guidelines, specific extended application analyses are to be

performed only by experts in fire resistant constructions.

Caution — Attention 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 operational 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 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.

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 13943, Fire tests — Vocabulary

ISO 834-1, Fire resistance tests — Elements of building construction — Part 1 — General requirements for

fire resistance testing
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 834-1 and ISO 13943, and the

following apply.
© ISO 2012 – All rights reserved 1
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ISO 834-12:2012(E)
3.1
separating elements

building elements, such as walls, bulkheads or ceilings, which are required to act as fire separations

or fire barriers; divide buildings (including ships, airplanes, trains, etc.) into fire compartments or fire

zones; or separate a building from adjoining buildings, in order to resist the spread of fire to or from

adjoining compartments or buildings
3.2
non-loadbearing separating element

separating element designed not to be subject to any load other than its self-weight

3.3
internal non-loadbearing wall

wall, which provides fire separation which may be exposed separately to a fire from either side

3.4
external non-loadbearing wall

wall forming the external envelope of a building which may be exposed separately to an internal or an

external fire
3.5
insulated non-loadbearing separating element

separating element which satisfies both the integrity and insulation criteria for the anticipated fire

resistance period
3.6
standard supporting construction

form of construction used to close off the furnace and to support the non-loadbearing separating element

being evaluated and which has known resistance to thermal distortion
3.7
plinth

form of standard supporting construction that reduces the height of the opening by raising the support

base to accommodate the test specimen
3.8
uninsulated non-loadbearing separating element

separating element which satisfies the integrity criteria for the anticipated uninsulated fire resistance

period, but which is not required to meet the thermal insulating criterion contained in ISO 834-1

4 Symbols and abbreviated terms
Symbols and des
...

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