ISO/TS 22762-4:2019
(Main)Elastomeric seismic-protection isolators — Part 4: Guidance on the application of ISO 22762-3
Elastomeric seismic-protection isolators — Part 4: Guidance on the application of ISO 22762-3
This document provides guidance on ISO 22762-3:2018. It includes examples of design calculations, and provides data on the characteristics obtained from all types of elastomeric isolators.
Appareils d'appuis structuraux en élastomère pour protection sismique — Partie 4: Lignes directrices pour l'application de l'ISO 22762-3
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TECHNICAL ISO/TS
SPECIFICATION 22762-4
Second edition
2019-01
Elastomeric seismic-protection
isolators —
Part 4:
Guidance on the application of
ISO 22762-3
Appareils d'appuis structuraux en élastomère pour protection
sismique —
Partie 4: Lignes directrices pour l'application de l'ISO 22762-3
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 .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Guidance on the use of Clause 4 of ISO 22762-3:2018 . 1
5 Guidance on the use of Clause 5 of ISO 22762-3:2018 . 1
6 Guidance on the use of Clause 6 of ISO 22762-3:2018 . 1
6.1 General . 1
6.2 Type tests and routine tests. 1
6.3 Functional requirements . 3
6.4 Design compressive force and design shear displacement . 3
6.5 Performance requirements . 4
6.5.1 General. 4
6.5.2 Compressive properties . 4
6.5.3 Shear properties . 5
6.5.4 Tensile properties . 6
6.5.5 Dependencies of shear properties . 8
6.5.6 Dependencies of compressive properties .22
6.5.7 Shear displacement capacity .22
6.5.8 Durability .23
7 Guidance on the use of Clause 7 of ISO 22762-3:2018 .25
7.1 General .25
7.2 Compressive stiffness .25
7.2.1 In case of LNR .26
7.2.2 In case of HDR .27
7.2.3 In case of LRB .30
8 Guidance on the use of Clause 8 of ISO 22762-3:2018 .31
9 Guidance on the use of Clause 9 of ISO 22762-3:2018 .31
10 Guidance on the use of Clause 10 of ISO 22762-3:2018.31
11 Guidance on the use of Clause 11 of ISO 22762-3:2018.31
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 45, Rubber and rubber products,
Subcommittee SC 4, Products (other than hoses).
This second edition cancels and replaces the first edition (ISO/TS 22762-4:2014), which has been
technically revised.
The main changes compared to the previous edition are as follows:
— the number of the pieces in Clause 6 has been amended;
— the temperature has been changed from 20 °C to 23 °C.
A list of all parts in the ISO 22762 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.
iv © ISO 2019 – All rights reserved
TECHNICAL SPECIFICATION ISO/TS 22762-4:2019(E)
Elastomeric seismic-protection isolators —
Part 4:
Guidance on the application of ISO 22762-3
1 Scope
This document provides guidance on ISO 22762-3:2018. It includes examples of design calculations, and
provides data on the characteristics obtained from all types of elastomeric isolators.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 22762-1:2018, Elastomeric seismic-protection isolators — Part 1: Test methods
ISO 22762-3:2018, Elastomeric seismic-protection isolators — Part 3: Applications for buildings —
Specifications
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 22762-3:2018 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
4 Guidance on the use of Clause 4 of ISO 22762-3:2018
No guidance is given.
5 Guidance on the use of Clause 5 of ISO 22762-3:2018
No guidance is given.
6 Guidance on the use of Clause 6 of ISO 22762-3:2018
6.1 General
Guidance is given for 6.2, 6.4, and 6.5.
6.2 Type tests and routine tests
An example of the scaled test pieces (scales A and B) for the type testing of the specific isolator size is
given as follows.
Dimensions and properties of target isolator (isolator-X) are shown in Table 1.
Table 1 — Dimensions and properties of isolator-X
Outer diameter, d (mm) 1 000
o
Inner diameter, d (mm) 25
i
Thickness of one rubber layer, t (mm) 6,7
r
Thickness of reinforcing steel plate, t (mm) 4,4
s
Number of rubber layer, n 30
First shape factor, S 36,4
Second shape factor, S 5,0
Shear stiffness, K (N/mm × 10 ) 2,44
h
Equivalent damping ratio, h 0,225
eq
Compressive stiffness, K (N/mm × 10 ) 5 450
v
K and h values are under shear strain of 100 %.
h eq
In this case, requirement for scales A and B test piece are shown in Table 4 of ISO 22762-3:2018.
Examples of dimensions and properties of scales A and B are shown in Table 2.
Table 2 — Examples of Scales A and B for Isolator-X
Characteristics Scale A Scale B
Scale 0,25 0,6
Outer diameter, d (mm) 250 600
o
Inner diameter, d (mm) 0 (6,3) 15
i
Thickness of one rubber layer, t (mm) 1,7 4,0
r
Thickness of reinforcing steel plate, t (mm) 1,2 2,2
s
Number of rubber layer, n 30 30
First shape factor, S 36,4 36,4
Second shape factor, S 5,0 5,0
Shear stiffness, K (N/mm × 10 ) 0,61 1,46
h
Equivalent damping ratio, h 0,225 0,225
eq
Compressive stiffness, K (N/mm × 10 ) 1 360 3 270
v
For any dimension, variation of ± 5 % from exact scale-downed dimensions can be allowed.
The scaling of reinforcing plate for scale A can be adjusted if the effect on characteristics of isolator is
not significant. In the case of scale A in Table 2, the thickness of the plate is computed as 1,1 mm and
1,2 mm is adopted for the test piece.
Number of the test pieces required is not specified in the text. The recommended number of the test
pieces is shown in Table 3 when each test piece is tested individually. Table 3 is number of the test
pieces for single-shear testing arrangement. In the case that double-shear testing arrangement is used
for determining the shear properties, it is recommended that three tests are performed and the number
of test pieces doubled.
2 © ISO 2019 – All rights reserved
Table 3 — Recommended number of test pieces for each test item
Properties Number of test pieces
Compressive properties 3
Shear properties 3
Shear strain dependence 3
Dependency of shear properties Compressive stress dependence 3
Others 3
Dependency of compressive properties 3
Ultimate properties 3
Durability 2
In the case shown in Table 4, the available previous test results can be used for substitution of the test
required for the newly designed isolator.
Table 4 — An example of available previous type test results: Comparison of characteristics
between newly designed and previously tested isolator
Previously
Newly designed Newly designed
Characteristics tested Remarks
isolator (−) isolator (+)
isolator
Outer diameter, d (mm) 1 100 1 000 1 200 within ± 10 %
o
Inner diameter, d (mm) 25 25 27 within ± 10 %
i
Thickness of one rubber
7,0 6,7 7,5 within ± 10 %
layer, t (mm)
r
Thickness of reinforcing
4,4 4,4 4,8 within ± 10 %
plate, t (mm)
s
Number of rubber layer, n 30 30 30 same
First shape factor, S 38,4 36,4 42,0 within ± 10 %
Second shape factor, S 5,2 5,0 5,3 within ± 10 %
Maximum comp. stress for less than or equal to
30 25 30
test, σ (MPa) previous test
max
Minimum comp. stress for
−0,5 0,5 5,0 more than previous test
test, σ (MPa)
min
Maximum shear strain for
3,5 3,0 3,2 less than previous test
test, γ
max
6.3 Functional requirements
No guidance is given.
6.4 Design compressive force and design shear displacement
Design compressive force refers to the force under non-seismic conditions.
Any specification or guidance is not given regarding nominal stress, σ . Recommended process to
nom
specify σ is given as follows:
nom
a) σ is de
...
TECHNICAL ISO/TS
SPECIFICATION 22762-4
Second edition
2019-01
Elastomeric seismic-protection
isolators —
Part 4:
Guidance on the application of
ISO 22762-3
Appareils d'appuis structuraux en élastomère pour protection
sismique —
Partie 4: Lignes directrices pour l'application de l'ISO 22762-3
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 .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Guidance on the use of Clause 4 of ISO 22762-3:2018 . 1
5 Guidance on the use of Clause 5 of ISO 22762-3:2018 . 1
6 Guidance on the use of Clause 6 of ISO 22762-3:2018 . 1
6.1 General . 1
6.2 Type tests and routine tests. 1
6.3 Functional requirements . 3
6.4 Design compressive force and design shear displacement . 3
6.5 Performance requirements . 4
6.5.1 General. 4
6.5.2 Compressive properties . 4
6.5.3 Shear properties . 5
6.5.4 Tensile properties . 6
6.5.5 Dependencies of shear properties . 8
6.5.6 Dependencies of compressive properties .22
6.5.7 Shear displacement capacity .22
6.5.8 Durability .23
7 Guidance on the use of Clause 7 of ISO 22762-3:2018 .25
7.1 General .25
7.2 Compressive stiffness .25
7.2.1 In case of LNR .26
7.2.2 In case of HDR .27
7.2.3 In case of LRB .30
8 Guidance on the use of Clause 8 of ISO 22762-3:2018 .31
9 Guidance on the use of Clause 9 of ISO 22762-3:2018 .31
10 Guidance on the use of Clause 10 of ISO 22762-3:2018.31
11 Guidance on the use of Clause 11 of ISO 22762-3:2018.31
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 45, Rubber and rubber products,
Subcommittee SC 4, Products (other than hoses).
This second edition cancels and replaces the first edition (ISO/TS 22762-4:2014), which has been
technically revised.
The main changes compared to the previous edition are as follows:
— the number of the pieces in Clause 6 has been amended;
— the temperature has been changed from 20 °C to 23 °C.
A list of all parts in the ISO 22762 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.
iv © ISO 2019 – All rights reserved
TECHNICAL SPECIFICATION ISO/TS 22762-4:2019(E)
Elastomeric seismic-protection isolators —
Part 4:
Guidance on the application of ISO 22762-3
1 Scope
This document provides guidance on ISO 22762-3:2018. It includes examples of design calculations, and
provides data on the characteristics obtained from all types of elastomeric isolators.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 22762-1:2018, Elastomeric seismic-protection isolators — Part 1: Test methods
ISO 22762-3:2018, Elastomeric seismic-protection isolators — Part 3: Applications for buildings —
Specifications
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 22762-3:2018 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
4 Guidance on the use of Clause 4 of ISO 22762-3:2018
No guidance is given.
5 Guidance on the use of Clause 5 of ISO 22762-3:2018
No guidance is given.
6 Guidance on the use of Clause 6 of ISO 22762-3:2018
6.1 General
Guidance is given for 6.2, 6.4, and 6.5.
6.2 Type tests and routine tests
An example of the scaled test pieces (scales A and B) for the type testing of the specific isolator size is
given as follows.
Dimensions and properties of target isolator (isolator-X) are shown in Table 1.
Table 1 — Dimensions and properties of isolator-X
Outer diameter, d (mm) 1 000
o
Inner diameter, d (mm) 25
i
Thickness of one rubber layer, t (mm) 6,7
r
Thickness of reinforcing steel plate, t (mm) 4,4
s
Number of rubber layer, n 30
First shape factor, S 36,4
Second shape factor, S 5,0
Shear stiffness, K (N/mm × 10 ) 2,44
h
Equivalent damping ratio, h 0,225
eq
Compressive stiffness, K (N/mm × 10 ) 5 450
v
K and h values are under shear strain of 100 %.
h eq
In this case, requirement for scales A and B test piece are shown in Table 4 of ISO 22762-3:2018.
Examples of dimensions and properties of scales A and B are shown in Table 2.
Table 2 — Examples of Scales A and B for Isolator-X
Characteristics Scale A Scale B
Scale 0,25 0,6
Outer diameter, d (mm) 250 600
o
Inner diameter, d (mm) 0 (6,3) 15
i
Thickness of one rubber layer, t (mm) 1,7 4,0
r
Thickness of reinforcing steel plate, t (mm) 1,2 2,2
s
Number of rubber layer, n 30 30
First shape factor, S 36,4 36,4
Second shape factor, S 5,0 5,0
Shear stiffness, K (N/mm × 10 ) 0,61 1,46
h
Equivalent damping ratio, h 0,225 0,225
eq
Compressive stiffness, K (N/mm × 10 ) 1 360 3 270
v
For any dimension, variation of ± 5 % from exact scale-downed dimensions can be allowed.
The scaling of reinforcing plate for scale A can be adjusted if the effect on characteristics of isolator is
not significant. In the case of scale A in Table 2, the thickness of the plate is computed as 1,1 mm and
1,2 mm is adopted for the test piece.
Number of the test pieces required is not specified in the text. The recommended number of the test
pieces is shown in Table 3 when each test piece is tested individually. Table 3 is number of the test
pieces for single-shear testing arrangement. In the case that double-shear testing arrangement is used
for determining the shear properties, it is recommended that three tests are performed and the number
of test pieces doubled.
2 © ISO 2019 – All rights reserved
Table 3 — Recommended number of test pieces for each test item
Properties Number of test pieces
Compressive properties 3
Shear properties 3
Shear strain dependence 3
Dependency of shear properties Compressive stress dependence 3
Others 3
Dependency of compressive properties 3
Ultimate properties 3
Durability 2
In the case shown in Table 4, the available previous test results can be used for substitution of the test
required for the newly designed isolator.
Table 4 — An example of available previous type test results: Comparison of characteristics
between newly designed and previously tested isolator
Previously
Newly designed Newly designed
Characteristics tested Remarks
isolator (−) isolator (+)
isolator
Outer diameter, d (mm) 1 100 1 000 1 200 within ± 10 %
o
Inner diameter, d (mm) 25 25 27 within ± 10 %
i
Thickness of one rubber
7,0 6,7 7,5 within ± 10 %
layer, t (mm)
r
Thickness of reinforcing
4,4 4,4 4,8 within ± 10 %
plate, t (mm)
s
Number of rubber layer, n 30 30 30 same
First shape factor, S 38,4 36,4 42,0 within ± 10 %
Second shape factor, S 5,2 5,0 5,3 within ± 10 %
Maximum comp. stress for less than or equal to
30 25 30
test, σ (MPa) previous test
max
Minimum comp. stress for
−0,5 0,5 5,0 more than previous test
test, σ (MPa)
min
Maximum shear strain for
3,5 3,0 3,2 less than previous test
test, γ
max
6.3 Functional requirements
No guidance is given.
6.4 Design compressive force and design shear displacement
Design compressive force refers to the force under non-seismic conditions.
Any specification or guidance is not given regarding nominal stress, σ . Recommended process to
nom
specify σ is given as follows:
nom
a) σ is de
...
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