1、BSI Standards PublicationBS ISO 13268:2010Thermoplastics piping systemsfor non-pressure undergrounddrainage and sewerage Thermoplastics shafts or risersfor inspection chambers andmanholes Determination ofring stiffnessIncorporating corrigendum September 2015BS ISO 13268:2010 BRITISH STANDARDNational
2、 forewordThis British Standard is the UK implementation of ISO 13268:2010.The UK participation in its preparation was entrusted by TechnicalCommittee PRI/88, Plastics piping systems, to SubcommitteeA list of organizations represented on this subcommittee can beobtained on request to its secretary.Th
3、is publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication.ISBN 978 0 580 91513 0ICS 23.040.20; 23.040.45; 91.140.80; 93.030Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standar
4、d was published under the authority of theStandards Policy and Strategy Committee on 31 July 2010 The British Standards Institution 2015. Published by BSI Standards Limited 2015 Amendments/corrigenda issued since publicationDate T e x t a f f e c t e d30 September 2015 Implementation of ISO correcte
5、d text 1 September 2010: Subclause 8.2 correctedPRI/88/1, Plastics piping for non-pressure applications.Reference numberISO 13268:2010(E)ISO 2010INTERNATIONAL STANDARD ISO13268First edition2010-06-15Corrected version2010-09-01Thermoplastics piping systems for non-pressure underground drainage and se
6、werage Thermoplastics shafts or risers for inspection chambers and manholes Determination of ring stiffness Systmes de canalisations thermoplastiques pour branchements et collecteurs dassainissement enterrs sans pression lments de rhausse thermoplastiques pour chambres dinspection et de branchement
7、ou regards Dtermination de la rigidit annulaire ISO 13268:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed
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10、 inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2010 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, wi
11、thout 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. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2010 All r
12、ights reservedBS ISO 13268:2010ISO 13268:2010(E) ISO 2010 All rights reserved iiiForeword 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
13、 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 collaborate
14、s 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
15、. 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
16、 document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 13268 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee SC 1, Plastics pipes and fittings fo
17、r soil, waste and drainage (including land drainage). This corrected version of ISO 13268:2010 incorporates the following corrections. In 8.2: Sf has been changed to SF, in Equations (1) and (2). List item a) has been deleted, therefore b) has been moved into normal text. Equation (2) has been repla
18、ced. BS ISO 13268:2010INTERNATIONAL STANDARD ISO 13268:2010(E) ISO 2010 All rights reserved 1Thermoplastics piping systems for non-pressure underground drainage and sewerage Thermoplastics shafts or risers for inspection chambers and manholes Determination of ring stiffness 1 Scope This Internationa
19、l Standard specifies a test method for assessing the initial (short-term) tangential ring stiffness of riser shafts for thermoplastics inspection chambers or manholes. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated referenc
20、es, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 48, Rubber, vulcanized or thermoplastic Determination of hardness (hardness between 10 IRHD and 100 IRHD) ISO 9969, Thermoplastics pipes Determination of
21、ring stiffness 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 inspection chamber drainage and sewerage fitting used for the connection of drainage or sewerage installations and for changing the direction of drainage or sewerage runs NOTE An
22、inspection chamber terminates at ground level, permitting the introduction of cleaning, inspection and test equipment and the removal of debris, but it does not provide access for personnel. The riser shaft connected to these fittings has a minimum outside diameter of 200 mm and a maximum inside dia
23、meter of less than 800 mm. 3.2 manhole drainage and sewerage fitting used for the connection of drainage or sewerage installations and for changing the direction of drainage or sewerage runs NOTE A manhole terminates at ground level, permitting the introduction of cleaning, inspection and test equip
24、ment and the removal of debris, and also providing access for personnel. The minimum inside diameter of a manhole riser shaft is 800 mm. 3.3 structured-wall ancillary fitting fitting with an optimized structural design with regard to material usage, but which still achieves the relevant performance
25、requirements NOTE These fittings can be circular or rectangular in design. BS ISO 13268:2010ISO 13268:2010(E) 2 ISO 2010 All rights reserved3.4 regular cross section shaft riser shaft either fabricated from plain pipe or from structured wall pipe or fittings with a regular symmetrical design on thei
26、r external surface NOTE These products can be manufactured by extrusion, injection moulding, blow moulding or rotational moulding. 3.5 irregular cross section shaft riser shaft with an irregular asymmetrical design on its external surface, such as those with additional reinforcing rings or structure
27、s intended to strengthen the riser in specific areas NOTE These products can be manufactured by extrusion, injection moulding, blow moulding or rotational moulding. 4 Principle 4.1 General The ring stiffness of a shaft shall be determined using the ISO 9969 test method when the shaft has a circular
28、and regular cross-section. Where a shaft has a square or rectangular cross-section, or if the shape is irregular, the ISO 9969 test shall be modified as described in this International Standard to determine the ring stiffness (see Table 1). Table 1 Relevant International Standards for determination
29、of ring stiffness External shaft design Type of cross-section Relevant International Standard for determination of ring stiffness Regular cross-section and circular ISO 9969 Plain surface Irregular cross-section, circular, square or rectangular This International Standard Regular cross-section and c
30、ircular ISO 9969 Structured wall surface Irregular cross-section, circular, square or rectangular This International Standard 4.2 Principle for shafts with circular and regular cross-section The ring stiffness shall be determined by measuring the force and the deflection while deflecting the shaft a
31、t a constant rate. A length of shaft supported horizontally shall be compressed vertically between two parallel flat plates moved at a constant speed, which is dependent upon the diameter of the shaft. A plot of force versus deflection shall be generated. The ring stiffness shall be calculated as a
32、function of the force necessary to produce a deflection of 0,03didiametrically across the shaft. 4.3 Principle for shafts with circular and irregular cross-section or square or rectangular The ring stiffness shall be determined by measuring the force and deflection whilst deflecting the shaft at a c
33、onstant rate or constant load, until sufficient force is applied to obtain a resulting deflection in the range of 2 % to 6 %. BS ISO 13268:2010ISO 13268:2010(E) ISO 2010 All rights reserved 3A riser shaft or segment of shaft shall be placed symmetrically between two rigid parallel plates or beams or
34、, alternatively, between one rigid beam and a V-shaped support. A compressive force shall be applied to the shaft or segment using a bearer shaped to the external surface of the test piece. The ring stiffness shall be calculated as a function of the force required to produce the deflection. 5 Appara
35、tus 5.1 Shaft with circular and regular cross-section The apparatus shall conform to that described in ISO 9969. Figure 1 Shaft with circular and regular cross-section 5.2 Shaft with circular and irregular cross-section or square or rectangular NOTE Examples for representative test pieces are shown
36、in Figures 2 and 3. Figure 2 Shafts with circular and irregular cross-section Figure 3 Square and rectangular shaft BS ISO 13268:2010ISO 13268:2010(E) 4 ISO 2010 All rights reserved5.2.1 Loading frame, with two rigid parallel plates or beams, between which a compressive force, F, can be applied to t
37、he test piece such that the force and the resulting deflection of the test piece in the direction of the force can be measured to an accuracy of 1 %. Where a V-shaped support is used, the included angle shall be 170 or more. For shafts with square or rectangular cross-sections, the bearers shall hav
38、e a width, W, not greater than 25 mm. For circular shafts with irregular cross-section, the maximum width of bearers shall be for: DN/ID u 400: 50 mm; 400 1 200: 150 mm. NOTE The above values have been taken from EN 476:1997, 9.2.11. Where the outside of an irregular shaft has a change in cross-sect
39、ion incorporated within the test piece, the bearers shall be shaped to accommodate this (see Figure 4). Where square or rectangular shafts have a regular rib configuration, this shall not be considered not to be a change in cross-section, and the load, F, imposed shall be applied just to the crests
40、of the ribs. The centre of loading shall be so arranged that the vertical deflection of the two ends of the test piece differs by not more than 0,5 % of the nominal size of the shaft. Where the surface of the outside of the shaft does not provide a smooth bearing contact, the bearers shall be surfac
41、ed with a strip, not less than 3 mm thick, of elastomeric material of (50 5) IRHD hardness in accordance with ISO 48. The length of each bearer shall be not less than the length of the test piece. BS ISO 13268:2010ISO 13268:2010(E) ISO 2010 All rights reserved 5Key 1 bearer, accommodated to shape of
42、 test piece 2 elastomeric strips 3 reference beam for measuring 4 joint element, assembled, comprising standard sealing system of the manufacturer 5 test piece 6 elastomeric material 7 support F load, applied to upper bearer L length of test piece W width of bearer aMeasuring point 1. bMeasuring poi
43、nt 2. cMeasuring point 3. Figure 4 Loading arrangement 5.2.2 Measuring devices, capable of determining the length to an accuracy of 0,5 mm and the force and deflection along the length of the test piece to an accuracy of 1 % in the direction of the applied force. 6 Test pieces 6.1 Number of test pie
44、ces Three test pieces shall be taken, each consisting of a riser or an appropriate length of riser segment incorporating a joint element, if required. 6.2 Age of test pieces Test pieces shall be (21 2) days old and conditioned, in air, at ambient temperature for at least 24 h prior to testing. BS IS
45、O 13268:2010ISO 13268:2010(E) 6 ISO 2010 All rights reserved6.3 Specification of test pieces 6.3.1 Shafts with circular and regular cross-section When the shaft has a circular and regular cross-section, the test piece shall be in accordance with ISO 9969 and have a minimum length of 300 mm. In the c
46、ase of a one-piece chamber or manhole, the shaft shall be cut off at a minimum of 300 mm from the top of the main channel. It shall be cut smoothly and perpendicular to the main axis. 6.3.2 Shafts with a square, rectangular or irregular cross-section When the chamber or manhole consists of a chamber
47、 base and a separate shaft, the whole shaft with an additional joint element shall be used as the test piece. The additional joint element shall be connected with the shaft by using the standard sealing or welding system of the manufacturer (see Figure 5). In the case of a one-piece chamber or manho
48、le, the test piece shall be cut off at a minimum of 300 mm from the top of the main channel. It shall be cut smoothly and perpendicular to the main axis of the chamber or manhole. The length of the piece shall be chosen to obtain maximum symmetry, but shall be not less than 300 mm and not exceed 1 0
49、00 mm. Key 1 joint element 2 joint element connected with the standard sealing system of the manufacturer Figure 5 Shaft with an irregular cross-section connected with a joint element 7 Procedure 7.1 Test temperature The test shall be conducted at a temperature of (23 2) C. 7.2 Shafts with circular and regular cross-section The test shall be carried out in accordance with ISO 9969. BS ISO 13268:2010ISO 13268:2010(E) ISO 2010 All rights reserved 77.3 Shafts with a square, rectangular
