ISO/TS 10986:2021
(Main)Plastics piping systems — Glass-reinforced thermosetting plastics (GRP) pipes — System design of above ground pipe and joint installations without end thrust
Plastics piping systems — Glass-reinforced thermosetting plastics (GRP) pipes — System design of above ground pipe and joint installations without end thrust
This document addresses the system design of pipe and joints of above ground installations without end-thrust as specified in systems standard ISO 23856. It is directed to pipelines with a minimum stiffness of SN 5000 laid in a straight line between thrust blocks. It is based on the safety concepts described in ISO TS 20656-1, with consequence class 2 (CC2) as default. For other consequence classes, certain details specified in this document can need to be modified. This document is directed to double bell coupling. However, much of the information can be adapted and utilized for other flexible joints systems. This document does not cover fittings nor detailled engineering work like thrust blocks, support and anchor designs. As installation is not included in the scope of this document and to assist system design, Annex A provides a pressure testing and inspection procedure. However, to ensure the use of clearly defined field test data in system design, Annex A can be used normatively by agreement between purchaser and supplier. An example of recording above ground joint deflection data is given in Annex B.
Systèmes de canalisations en plastiques — Tubes en plastiques thermodurcissables renforcés de verre (PRV) — Conception de système d'installations de tubes et d'assemblages en aérien sans poussée d'extrémité
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TECHNICAL ISO/TS
SPECIFICATION 10986
First edition
2021-07
Plastics piping systems — Glass-
reinforced thermosetting plastics
(GRP) pipes — System design of above
ground pipe and joint installations
without end thrust
Systèmes de canalisations en plastiques — Tubes en plastiques
thermodurcissables renforcés de verre (PRV) — Conception de
système d'installations de tubes et d'assemblages en aérien sans
poussée d'extrémité
Reference number
©
ISO 2021
© ISO 2021
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
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Angular deflection of joints . 1
4.1 General . 1
4.2 Effects of loads on joint angular deflection . 3
4.3 Measuring deflections . 3
4.4 Checking the installed joint . 4
4.4.1 General. 4
4.4.2 Coupling-to-pipe position . 4
4.4.3 Joint misalignment . 5
4.4.4 Gap between pipe ends . 5
4.4.5 Adjusting joints . 6
5 Installation of above ground pipes . 6
5.1 General . 6
5.2 Supporting of pipes . 7
5.2.1 General. 7
5.2.2 Support design . 9
5.2.3 Loads on supports .10
5.3 Anchor design .11
5.4 Guide design .11
5.5 Maximum support spacing .14
5.5.1 General.14
5.5.2 Perpendicular forces .15
5.5.3 Forces due to angular deviation .15
5.5.4 Axial forces .15
5.5.5 Maximum total axial force .17
5.5.6 Deformations and bending moments for pipes resting on two supports .18
5.5.7 Deformations and bending moments for pipes resting on multiple supports .21
5.5.8 Load cases and combinations of long- and short-term loads.23
5.5.9 Checking of stresses and deformations .24
Annex A (informative) Pipeline pressure testing and inspection .27
Annex B (informative) Recording above ground joint deflection data .34
Bibliography .37
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 138, Plastics pipes, fittings and valves for
the transport of fluids, Subcommittee SC 6, Reinforced plastics pipes and fittings for all applications.
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 2021 – All rights reserved
Introduction
While pipes manufactured according to ISO 23856 are typically utilized in buried installations, there
are circumstances where installing above ground is the preferred practice. These can include terrain
not suitable for burial (e.g. rock), road or river crossings, unsuitable soils and installation on steep
slopes.
For information on subjects such as shipping, handling, inspecting, rigid connections, thrust restraint
and joining pipes, refer to ISO/TS 10465-1 which addresses the buried installation of GRP pipes. The
guidelines and information on these subjects are also applicable to pipes used above ground. The
information in this document is intended to supplement ISO/TS 10465-1 with practices and guidelines
specific to above ground installation.
TECHNICAL SPECIFICATION ISO/TS 10986:2021(E)
Plastics piping systems — Glass-reinforced thermosetting
plastics (GRP) pipes — System design of above ground pipe
and joint installations without end thrust
1 Scope
This document addresses the system design of pipe and joints of above ground installations without
end-thrust as specified in systems standard ISO 23856. It is directed to pipelines with a minimum
stiffness of SN 5000 laid in a straight line between thrust blocks. It is based on the safety concepts
described in ISO TS 20656-1, with consequence class 2 (CC2) as default. For other consequence classes,
certain details specified in this document can need to be modified. This document is directed to double
bell coupling. However, much of the information can be adapted and utilized for other flexible joints
systems.
This document does not cover fittings nor detailled engineering work like thrust blocks, support and
anchor designs.
As installation is not included in the scope of this document and to assist system design, Annex A
provides a pressure testing and inspection procedure. However, to ensure the use of clearly defined
field test data in system design, Annex A can be used normatively by agreement between purchaser and
supplier. An example of recording above ground joint deflection data is given in Annex B.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
No terms and definitions are listed in this document.
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 Angular deflection of joints
4.1 General
The angular deflection at flexible joints shall be controlled to avoid excessive loads on the pipeline
and its supporting structures. Above ground installations do not benefit from the stabilizing support
that is given by the soil in buried installations, and they are therefore more susceptible to problems
of joint misalignment. For this reason, control and measurement of joint angular deflection is of
great importantance. It is necessary to limit angular deflections to lower values than those normally
permitted for buried applications.
There are two types of deflection to consider: pipe-to-pipe angular deflection and coupling-to-pipe
deflection, as shown in Figure 1. Both need to be considered as coupling-to-pipe angular deflection can
be larger than the pipe-to-pipe angular deflection.
Key
1 coupling-to-pipe angular deflection
2 pipe-to-pipe angular deflection
Figure 1 — "Pipe-to-pipe" and "coupling-to-pipe" deflection, example 1
For some designs of double socket joint the pipe can only move on one side of the coupling. In that case,
the pipe-to-pipe angular deflection is equal to the coupling-to-pipe angular deflection on one side (see
Figure 2). The manufacturer should advise which case will occur with their design of joint.
Key
1 pipe-to-pipe = pipe-to-coupling angular deflection
Figure 2 — "Pipe-to-pipe" and "coupling-to-pipe" deflection, example 2
2 © ISO 2021 – All rights reserved
4.2 Effects of loads on joint angular deflection
The angular deflection is influenced by several factors in addition to the initial pipe installation, such as
load-induced pipe deflections and support settlement.
...
TECHNICAL ISO/TS
SPECIFICATION 10986
First edition
2021-07
Plastics piping systems — Glass-
reinforced thermosetting plastics
(GRP) pipes — System design of above
ground pipe and joint installations
without end thrust
Systèmes de canalisations en plastiques — Tubes en plastiques
thermodurcissables renforcés de verre (PRV) — Conception de
système d'installations de tubes et d'assemblages en aérien sans
poussée d'extrémité
Reference number
©
ISO 2021
© ISO 2021
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
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Angular deflection of joints . 1
4.1 General . 1
4.2 Effects of loads on joint angular deflection . 3
4.3 Measuring deflections . 3
4.4 Checking the installed joint . 4
4.4.1 General. 4
4.4.2 Coupling-to-pipe position . 4
4.4.3 Joint misalignment . 5
4.4.4 Gap between pipe ends . 5
4.4.5 Adjusting joints . 6
5 Installation of above ground pipes . 6
5.1 General . 6
5.2 Supporting of pipes . 7
5.2.1 General. 7
5.2.2 Support design . 9
5.2.3 Loads on supports .10
5.3 Anchor design .11
5.4 Guide design .11
5.5 Maximum support spacing .14
5.5.1 General.14
5.5.2 Perpendicular forces .15
5.5.3 Forces due to angular deviation .15
5.5.4 Axial forces .15
5.5.5 Maximum total axial force .17
5.5.6 Deformations and bending moments for pipes resting on two supports .18
5.5.7 Deformations and bending moments for pipes resting on multiple supports .21
5.5.8 Load cases and combinations of long- and short-term loads.23
5.5.9 Checking of stresses and deformations .24
Annex A (informative) Pipeline pressure testing and inspection .27
Annex B (informative) Recording above ground joint deflection data .34
Bibliography .37
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 138, Plastics pipes, fittings and valves for
the transport of fluids, Subcommittee SC 6, Reinforced plastics pipes and fittings for all applications.
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 2021 – All rights reserved
Introduction
While pipes manufactured according to ISO 23856 are typically utilized in buried installations, there
are circumstances where installing above ground is the preferred practice. These can include terrain
not suitable for burial (e.g. rock), road or river crossings, unsuitable soils and installation on steep
slopes.
For information on subjects such as shipping, handling, inspecting, rigid connections, thrust restraint
and joining pipes, refer to ISO/TS 10465-1 which addresses the buried installation of GRP pipes. The
guidelines and information on these subjects are also applicable to pipes used above ground. The
information in this document is intended to supplement ISO/TS 10465-1 with practices and guidelines
specific to above ground installation.
TECHNICAL SPECIFICATION ISO/TS 10986:2021(E)
Plastics piping systems — Glass-reinforced thermosetting
plastics (GRP) pipes — System design of above ground pipe
and joint installations without end thrust
1 Scope
This document addresses the system design of pipe and joints of above ground installations without
end-thrust as specified in systems standard ISO 23856. It is directed to pipelines with a minimum
stiffness of SN 5000 laid in a straight line between thrust blocks. It is based on the safety concepts
described in ISO TS 20656-1, with consequence class 2 (CC2) as default. For other consequence classes,
certain details specified in this document can need to be modified. This document is directed to double
bell coupling. However, much of the information can be adapted and utilized for other flexible joints
systems.
This document does not cover fittings nor detailled engineering work like thrust blocks, support and
anchor designs.
As installation is not included in the scope of this document and to assist system design, Annex A
provides a pressure testing and inspection procedure. However, to ensure the use of clearly defined
field test data in system design, Annex A can be used normatively by agreement between purchaser and
supplier. An example of recording above ground joint deflection data is given in Annex B.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
No terms and definitions are listed in this document.
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 Angular deflection of joints
4.1 General
The angular deflection at flexible joints shall be controlled to avoid excessive loads on the pipeline
and its supporting structures. Above ground installations do not benefit from the stabilizing support
that is given by the soil in buried installations, and they are therefore more susceptible to problems
of joint misalignment. For this reason, control and measurement of joint angular deflection is of
great importantance. It is necessary to limit angular deflections to lower values than those normally
permitted for buried applications.
There are two types of deflection to consider: pipe-to-pipe angular deflection and coupling-to-pipe
deflection, as shown in Figure 1. Both need to be considered as coupling-to-pipe angular deflection can
be larger than the pipe-to-pipe angular deflection.
Key
1 coupling-to-pipe angular deflection
2 pipe-to-pipe angular deflection
Figure 1 — "Pipe-to-pipe" and "coupling-to-pipe" deflection, example 1
For some designs of double socket joint the pipe can only move on one side of the coupling. In that case,
the pipe-to-pipe angular deflection is equal to the coupling-to-pipe angular deflection on one side (see
Figure 2). The manufacturer should advise which case will occur with their design of joint.
Key
1 pipe-to-pipe = pipe-to-coupling angular deflection
Figure 2 — "Pipe-to-pipe" and "coupling-to-pipe" deflection, example 2
2 © ISO 2021 – All rights reserved
4.2 Effects of loads on joint angular deflection
The angular deflection is influenced by several factors in addition to the initial pipe installation, such as
load-induced pipe deflections and support settlement.
...
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