1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 25780:2011Plastics piping systems for pressure and non-pressure water supply, irrigation, drainage or sewerage Glass-reinforced thermosetting plastics (GRP) systems based
2、on unsaturated polyester (UP) r e s i n P i p e s w i t h f l e x i b l e joints intended to be installedusing jacking techniquesBS ISO 25780:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 25780:2011.The UK participation in its preparation was entrusted t
3、o TechnicalCommittee PRI/88/2, Plastics piping for pressure applications.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctappli
4、cation. BSI 2011ISBN 978 0 580 55717 0ICS 23.040.20; 91.140.60; 91.140.80; 93.030Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 May 2011.Amendments issued sinc
5、e publicationDate Text affectedBS ISO 25780:2011Reference numberISO 25780:2011(E)ISO 2011INTERNATIONAL STANDARD ISO25780First edition2011-05-15Plastics piping systems for pressure and non-pressure water supply, irrigation, drainage or sewerage Glass-reinforced thermosetting plastics (GRP) systems ba
6、sed on unsaturated polyester (UP) resin Pipes with flexible joints intended to be installed using jacking techniques Systmes de canalisations en matires plastiques pour lalimentation en eau avec ou sans pression, pour lirrigation ou lassainissement Systmes en matires plastiques thermodurcissables re
7、nforcs de verre (PRV) base de rsine de polyester non satur (UP) Tubes avec assemblages flexibles destins tre installs par les techniques de pousse BS ISO 25780:2011ISO 25780:2011(E) COPYRIGHT PROTECTED DOCUMENT ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may
8、 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 ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel.
9、+ 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2011 All rights reservedBS ISO 25780:2011ISO 25780:2011(E) ISO 2011 All rights reserved iiiContents Page Foreword iv 1 Scope1 2 Normative references1 3 Terms and definitions .2 4 Requireme
10、nts.11 4.1 Classification .11 4.2 Pipe properties 11 4.3 Materials .12 4.4 Pipe wall construction 13 4.5 Reference conditions for testing .14 4.6 Elapsed time, x, for determination of long-term properties 14 4.7 Joint properties .14 5 Pipes .16 5.1 Geometrical characteristics .16 5.2 Mechanical char
11、acteristics.19 5.3 Resistance to strain corrosion.20 5.4 Longitudinal compressive strength 20 5.5 Permissible jacking forces .21 5.6 Specific initial longitudinal compressive modulus, Ec,m.23 5.7 Resistance of pressure pipes to internal pressure23 6 Marking.23 7 Joint performance .23 7.1 General req
12、uirements .23 7.2 Interchangeability24 7.3 Geometrical characteristics .24 7.4 Design.24 7.5 Performance requirements.24 7.6 Test method additional information 25 Annex A (normative) Plastics piping systems Glass-reinforced thermosetting plastics (GRP) pipes Determination of the longitudinal compres
13、sive properties of a pipe, using a sample of prism test-pieces cut from a ring from the pipe27 Annex B (normative) Plastics piping systems Glass-reinforced thermosetting plastics (GRP) pipes Determination of the compressive properties of pipes, using spool test-pieces .34 Annex C (normative) Procedu
14、re for the calculation of the permissible jacking force on a GRP-(UP) pipe, Fperm,p39 Bibliography51 BS ISO 25780:2011ISO 25780:2011(E) iv ISO 2011 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member
15、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
16、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 Directive
17、s, 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 c
18、asting 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 25780 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and
19、 valves for the transport of fluids, Subcommittee SC 6, Reinforced plastics pipes and fittings for all applications. BS ISO 25780:2011INTERNATIONAL STANDARD ISO 25780:2011(E) ISO 2011 All rights reserved 1Plastics piping systems for pressure and non-pressure water supply, irrigation, drainage or sew
20、erage Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin Pipes with flexible joints intended to be installed using jacking techniques 1 Scope This International Standard specifies the properties of the piping system and its components made from glass-rein
21、forced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) for water supply, irrigation, drainage or sewerage systems with or without pressure. This International Standard is applicable to GRP-UP piping systems, with flexible joints, intended to be installed using jacking techniqu
22、es. It specifies the characteristics of pipes made from GRP-UP, with or without aggregates or fillers and also specifies the test parameters for the test methods referred to in this International Standard. NOTE Pipes referred to in this International Standard are, because of their intended use, requ
23、ired to have a minimum nominal stiffness of at least SN 20000 (see 5.2.1). This International Standard is applicable to pipes and joints with a size range from DN100 to DN4000 which are intended to be used for the conveyance of water or sewage at temperatures up to 50 C, with or without pressure. It
24、 covers requirements to prove the design of the joint and specifies type test performance requirements for the joints as a function of the declared nominal pressure rating of the pipeline system and the required joint deflection capability of the system. GRP-fittings, used between pipe systems cover
25、ed by this International Standard, shall be in accordance with ISO 10639 for water supply systems or ISO 10467 for drainage and sewerage systems, as applicable. In a pipe-work system, pipes of different nominal pressure and stiffness ratings may be used together. 2 Normative references The following
26、 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 75-2:2004, Plastics Determination of temperature of deflec
27、tion under load Part 2: Plastics and ebonite ISO 604:2002, Plastics Determination of compressive properties ISO 2078, Textile glass Yarns Designation ISO 3126, Plastics piping systems Plastics components Determination of dimensions BS ISO 25780:2011ISO 25780:2011(E) 2 ISO 2011 All rights reservedISO
28、 4633, Rubber seals Joint rings for water supply, drainage and sewerage pipelines Specification for materials ISO 7685, Plastics piping systems Glass-reinforced thermosetting plastics (GRP) pipes Determination of initial specific ring stiffness ISO 8639, Glass-reinforced thermosetting plastics (GRP)
29、 pipes and fittings Test methods for leaktightness of flexible joints ISO 10466, Plastics piping systems Glass-reinforced thermosetting plastics (GRP) pipes Test method to prove the resistance to initial ring deflection ISO 10467, Plastics piping systems for pressure and non-pressure drainage and se
30、werage Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin ISO 10468, Glass-reinforced thermosetting plastics (GRP) pipes Determination of the long-term specific ring creep stiffness under wet conditions and calculation of the wet creep factor ISO 10471, G
31、lass-reinforced thermosetting plastics (GRP) pipes Determination of the long-term ultimate bending strain and the long-term ultimate relative ring deflection under wet conditions ISO 10639, Plastics piping systems for pressure and non-pressure water supply Glass-reinforced thermosetting plastics (GR
32、P) systems based on unsaturated polyester (UP) resin ISO 10928, Plastics piping systems Glass-reinforced thermosetting plastics (GRP) pipes and fittings Methods for regression analysis and their use ISO 10952, Plastics piping systems Glass-reinforced thermosetting plastics (GRP) pipes and fittings D
33、etermination of the resistance to chemical attack for the inside of a section in a deflected condition 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 manufacturers declared pipe outside diameter dODexternal diameter of the pipe barrel, exclu
34、ding the spigot NOTE Manufacturers declared pipe outside diameter is expressed in millimetres (mm). 3.2 jacking diameter decalculated maximum outside diameter of the external profile of the pipe barrel at all cross-sections eODdd=+(1) where +is the plus tolerance on the outside diameter; dODis the m
35、anufacturers declared outside diameter. NOTE Jacking diameter, which is derived using the equation above, outside diameter and its tolerance are expressed in millimetres (mm). BS ISO 25780:2011ISO 25780:2011(E) ISO 2011 All rights reserved 33.3 mean diameter dmdiameter of the circle corresponding wi
36、th the middle of the pipe wall cross-section NOTE Mean diameter is derived using the following equation with the outside diameter and wall thickness expressed in millimetres (mm): mODdd e= where e is the pipes wall thickness; dOD is the manufacturers declared outside diameter. 3.4 internal diameter
37、ID diexternal diameter minus twice the wall thickness, e NOTE 1 Internal diameter is derived using the following equation i OD2dd e= NOTE 2 Internal diameter, outside diameter and wall thickness are expressed in millimetres (mm). 3.5 spigot or groove diameter dgexternal diameter of the spigot see Fi
38、gure 1 a) diameter, or in the groove of the spigot see Figure 1 b) diameter, if applicable NOTE Spigot or groove diameter is expressed in millimetres (mm). 3.6 minimum cross-sectional area at the spigot Asminimum area of the cross-section of the pipe at the spigot, or in the groove of the spigot, if
39、 applicable NOTE Minimum cross-sectional area at the spigot is derived using the following equation and is expressed in square millimetres (mm2) ()()22sgi0, 5 0,5Add= 3.7 buried pipeline pipeline which is subjected to the external pressure transmitted from soil loading, including traffic and superim
40、posed loads and, possibly, the pressure of a head of water 3.8 jacking trenchless construction method which installs a pipeline by inserting pipes one by one under the ground by pressing with one or more hydraulic jacks, while the excavated ground is simultaneously evacuated from the cutting head 3.
41、9 nominal length numerical designation of a pipe length, which is numerically equal to the laying length (3.11), when expressed in metres (m) and rounded to the nearest whole number NOTE Nominal length is a dimensionless number rounded to the nearest whole number. BS ISO 25780:2011ISO 25780:2011(E)
42、4 ISO 2011 All rights reserveda) Section through a rebated un-grooved spigot b) Section through a rebated grooved spigot c) Cross-section through spigot Key dODoutside diameter of pipe (see 3.1) dejacking diameter (see 3.2) diinternal diameter of pipe (see 3.4) dgrebated spigot or groove diameter (s
43、ee 3.5) e wall thickness of pipe AsMinimum pipe cross-sectional area at spigot (see 3.6). Figure 1 Diameters referred to in these definitions 3.10 total length distance between two planes normal to the pipe axis and passing through the extreme end points of the pipe NOTE Total length is expressed in
44、 metres (m). BS ISO 25780:2011ISO 25780:2011(E) ISO 2011 All rights reserved 53.11 laying length l total length of a pipe minus, where applicable, the manufacturers recommended insertion depth of the spigot(s) in the socket NOTE Laying length is expressed in millimetres (mm). 3.12 specific initial l
45、ongitudinal compressive stress at break (derived from a spool test-piece) b,scompressive stress at break (3.46) of a spool test-piece, during a short-term compressive test with the test-piece loaded along its longitudinal axis, including, if applicable, spigots with rebates NOTE When tested in accor
46、dance with Annex B, specific initial longitudinal compressive stress is expressed in megapascals (MPa). 3.13 minimum specific initial longitudinal compressive stress at break b,s,minmanufacturers declared minimum value for the specific initial longitudinal compressive stress at break of the pipe NOT
47、E Minimum specific initial longitudinal compressive stress at break is expressed in megapascals (MPa). 3.14 initial longitudinal compressive stress at break (derived from rebated or un-rebated test-pieces) b,r b,ucompressive stress at break of the test-piece during a short-term compression test usin
48、g either a rebated (r) or unrebated (u) test-piece NOTE When tested in accordance with Annex A, the initial longitudinal compressive stress at break is expressed in megapascals (MPa). 3.15 sample de-rating factor fsfactor correcting for the relationship between compression test results obtained on f
49、ull size pipes (spool test-pieces, 3.12) and results obtained using test-pieces with the same spigot geometry (3.14) NOTE Sample derating factor is a dimensionless number. 3.16 de-rated initial longitudinal compressive stress at break b,dcalculated compressive stress obtained from the test results at break using either un-rebated or rebated test-pieces and the applicable de-rating factor NOTE Derated initial longitudinal compress
