ISO 834-14:2019
(Main)Fire-resistance tests — Elements of building construction — Part 14: Requirements for the testing and assessment of applied fire protection to solid steel bar
Fire-resistance tests — Elements of building construction — Part 14: Requirements for the testing and assessment of applied fire protection to solid steel bar
This document specifies a test and assessment method for determining the contribution of fire protection systems to the fire resistance of circular and rectangular solid steel bar. ISO 834-10 and ISO 834-11 cover other section shapes such as angles, channels and flats. This document is not intended to be used for twisted wire or for cold or hot rolled steel bar which is primarily used for the reinforcement of concrete. This document is applicable for the protection of solid bar up to a maximum diameter of 130 mm and in the case of rectangular bar the maximum side length shall be limited to 130 mm with a maximum aspect ratio of 2:1 against the shorter length side. Beyond these limits, the solid steel bars are covered in ISO 834-10 and ISO 834-11. This document is intended to be used with any applied fire protection system, including multi-layered systems, that have demonstrated their integrity/stickability when tested on floor beams and hollow sections under load, and assessed in accordance with ISO 834-11. This document does not incorporate results from a loaded test on a tension member. Guidance for conducting a fire test on a steel bar under a tensile load is provided in Annex C. This document contains the fire test methodology to provide data on the thermal characteristics of the fire protection system when exposed to the standard temperature/time curve specified in ISO 834-1. It also contains an assessment method for the analysis of the test data. 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 steel types and sizes over the range of thicknesses of the applied fire protection system tested. The assessment procedure is used to establish: — on the basis of temperature data derived from testing steel bars, any practical constraints on the use of the fire protection system under fire test conditions, (the physical performance); — on the basis of the temperature data derived from testing steel bars, the thermal properties of the fire protection system, (the thermal performance). 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 steel types and sizes of steel bar over the range of thicknesses of the applied fire protection system tested. This document describes testing in both the vertical and horizontal orientations at the discretion of the sponsor.
Essais de résistance au feu — Éléments de construction — Partie 14: Exigences pour les essais et l'évaluation de la protection contre l'incendie appliquée aux barres pleines en acier
General Information
Buy Standard
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 834-14
First edition
2019-05
Fire-resistance tests — Elements of
building construction —
Part 14:
Requirements for the testing and
assessment of applied fire protection
to solid steel bar
Essais de résistance au feu — Éléments de construction —
Partie 14: Exigences pour les essais et l'évaluation de la protection
contre l'incendie appliquée aux barres pleines en acier
Reference number
©
ISO 2019
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
4 Symbols and abbreviated terms . 3
5 Test equipment. 3
5.1 General . 3
5.2 Furnace . 4
5.3 Loading equipment . 4
6 Test conditions . 4
6.1 General . 4
6.2 Support conditions . 4
6.3 Number of test specimens . 4
6.4 Size of test specimens . 4
6.5 Construction of steel test specimens . 4
6.5.1 Protected steel bars . 4
6.5.2 Application of the fire protection material . 5
6.6 Composition of test specimen component materials . 5
6.6.1 Steel specification . 5
6.6.2 Fire protection materials . 5
6.7 Selection of test specimens . 7
6.7.1 Principle of selection . 7
7 Installation of the test specimens . 8
7.1 Test specimen installation patterns . 8
7.2 Installation of the test specimens . 8
7.3 Furnace load . 8
8 Conditioning of the test specimens . 8
9 Application of instrumentation . 9
9.1 General . 9
9.2 Instrumentation for measurement and control of furnace temperature . 9
9.2.1 General. 9
9.2.2 Furnace temperature in the region of test specimens . 9
9.2.3 Instrumentation for the measurement of steel temperatures .10
9.3 Instrumentation for the measurement of pressure .11
10 Test procedure .11
10.1 General .11
10.2 Furnace temperature and pressure .11
10.3 Steelwork temperature .11
10.4 Observations .11
10.5 Termination of test .12
11 Test results .12
11.1 Acceptability of test results .12
11.2 Presentation of test results .12
12 Assessment .13
12.1 General .13
12.2 Assessment procedure for thermal performance .13
13 Assesment report .13
14 Limits of the applicability of the results of the assessment.14
Annex A (informative) Support to specimens suspended from the furnace roof.15
Annex B (normative) Linear interpolation and extension analysis .18
Annex C (informative) Loaded test procedures .22
iv © ISO 2019 – All rights reserved
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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 92, Fire safety, Subcommittee SC 2, Fire
containment.
A list of all parts in the ISO 834 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
Introduction
In building construction, high strength solid steel bar is often used as hangars and ties for supporting
other structural elements that are required to be fire resistant. As a result, these members are also
required to provide the same level of fire performance which usually involves applying either passive
or reactive fire protection materials to maintain their structural stability for a specified period of fire
resistance.
Small scale tensile tests on loaded steel specimens and subjected to transient heating conditions
representing typical heating rates in fire, have demonstrated that when tensile strains of around 1 %
to 3 % are attained, the specimens enter the onset of 'runaway' whereby the strain rate accelerates
resulting in failure within a further small rise in temperature. Similar strains are also experienced
in the lower flange of protected steel floor beams at the limit of deflection (span/30) when tested in
accordance with ISO 834-6 and in loaded column tests when specimens undergo thermal expansion
with extensions approaching 1 % strain before the onset of structural instability.
A purpose of loaded fire resistance tests is to demonstrate the integrity (stickabili
...
INTERNATIONAL ISO
STANDARD 834-14
First edition
2019-05
Fire-resistance tests — Elements of
building construction —
Part 14:
Requirements for the testing and
assessment of applied fire protection
to solid steel bar
Essais de résistance au feu — Éléments de construction —
Partie 14: Exigences pour les essais et l'évaluation de la protection
contre l'incendie appliquée aux barres pleines en acier
Reference number
©
ISO 2019
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
4 Symbols and abbreviated terms . 3
5 Test equipment. 3
5.1 General . 3
5.2 Furnace . 4
5.3 Loading equipment . 4
6 Test conditions . 4
6.1 General . 4
6.2 Support conditions . 4
6.3 Number of test specimens . 4
6.4 Size of test specimens . 4
6.5 Construction of steel test specimens . 4
6.5.1 Protected steel bars . 4
6.5.2 Application of the fire protection material . 5
6.6 Composition of test specimen component materials . 5
6.6.1 Steel specification . 5
6.6.2 Fire protection materials . 5
6.7 Selection of test specimens . 7
6.7.1 Principle of selection . 7
7 Installation of the test specimens . 8
7.1 Test specimen installation patterns . 8
7.2 Installation of the test specimens . 8
7.3 Furnace load . 8
8 Conditioning of the test specimens . 8
9 Application of instrumentation . 9
9.1 General . 9
9.2 Instrumentation for measurement and control of furnace temperature . 9
9.2.1 General. 9
9.2.2 Furnace temperature in the region of test specimens . 9
9.2.3 Instrumentation for the measurement of steel temperatures .10
9.3 Instrumentation for the measurement of pressure .11
10 Test procedure .11
10.1 General .11
10.2 Furnace temperature and pressure .11
10.3 Steelwork temperature .11
10.4 Observations .11
10.5 Termination of test .12
11 Test results .12
11.1 Acceptability of test results .12
11.2 Presentation of test results .12
12 Assessment .13
12.1 General .13
12.2 Assessment procedure for thermal performance .13
13 Assesment report .13
14 Limits of the applicability of the results of the assessment.14
Annex A (informative) Support to specimens suspended from the furnace roof.15
Annex B (normative) Linear interpolation and extension analysis .18
Annex C (informative) Loaded test procedures .22
iv © ISO 2019 – All rights reserved
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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 92, Fire safety, Subcommittee SC 2, Fire
containment.
A list of all parts in the ISO 834 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
Introduction
In building construction, high strength solid steel bar is often used as hangars and ties for supporting
other structural elements that are required to be fire resistant. As a result, these members are also
required to provide the same level of fire performance which usually involves applying either passive
or reactive fire protection materials to maintain their structural stability for a specified period of fire
resistance.
Small scale tensile tests on loaded steel specimens and subjected to transient heating conditions
representing typical heating rates in fire, have demonstrated that when tensile strains of around 1 %
to 3 % are attained, the specimens enter the onset of 'runaway' whereby the strain rate accelerates
resulting in failure within a further small rise in temperature. Similar strains are also experienced
in the lower flange of protected steel floor beams at the limit of deflection (span/30) when tested in
accordance with ISO 834-6 and in loaded column tests when specimens undergo thermal expansion
with extensions approaching 1 % strain before the onset of structural instability.
A purpose of loaded fire resistance tests is to demonstrate the integrity (stickabili
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.