1、DRAFT FOR DEVELOPMENT Plastic piping systems for non pressure underground drainage and sewerage - Unplasticized poly 0 (vinyl chloride) (PVC-U) - Part 3: Guidance for installation ICs 23.040.20; 83.140.30; 91.140.80; 93.030 DD ENV 1401-3:2001 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY
2、COPYRIGHT LAW DD ENV 1401-32001 Amd. No. Date National foreword Comments This Draft for Development is the English language version of This publication is not to be regarded as a British Standard. It is being issued in the Draft for Development series of publications and is of a provisional nature b
3、ecause it is specifically intended to give guidance for the installation of piping systems made from components conforming to BS EN 1401-1, hence for the purpose of installing such PVC-U piping systems for gravity drains and sewers this document provides for consideration an alternative document to
4、BS 5955-6: 1980, which remains a prime national standards for this purpose. It should be applied on this provisional basis, so that information and experience of its practical application may be obtained. ENV 1401-32000. This Draft for Development, having been prepared under the direction of the Sec
5、tor Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 August 2001 Please note BS EN 1401-1:1998 superseded BS 5481:1977 and partially superseded BS 4660:1989. Products conforming to BS 4660:2000 and BS 7158:2001 have been
6、designed to provide access to drainage systems constructed from components conforming to EN 1401-1. Comments arising from the use if this Draft for Development are requested so that UK experience can be reported to the European organization responsible for its conversion into a European Standard. A
7、review of this publication will be initiated 2 years after its publication by the European organization so that a decision can be taken on its status at the end of its three-year life. The commencement of the review period will be notified by an announcement in Update Standards. According to the rep
8、lies received by the end of the review period, the responsible BSI Committee will decide whether to support the conversion into a European Standard, to extend the life of the prestandard or to withdraw it. Comments should be sent in writing to the Secretary of BSI Subcommittee PRI/88/1, Plastic Pipi
9、ng for Non Pressure, at 389 Chiswick High Road, London W4 4AL, giving the document reference and clause number and proposing, where possible, an appropriate revision of the text. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The B
10、ritish Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. Summa
11、ry of pages This document comprises a front cover, an inside front cover, the ENV title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. O BSI 07-2001 ISBN O 580 38151 x ENV 14013 EUROPEAN PRESTA
12、NDARD PRNORME EUROPENNE a EUROPISCHE VORNORM May 2001 ICs 23.040.01 English version Plastics piping systems for non-pressure underground drainage and sewerage - Unplasticized poly(viny1 chloride) (PVC-U) - Part 3: Guidance for installation Systmes de canalisations en plastique pour les branchements
13、et les collecteurs dassainissement enterrs sans pression - Poly(ch1orure de vinyle) non plastifi (PVC- U) - Partie 3:Guide pour la pose a Kunststoff-Rohrleitungssysteme fr erdverlegte drucklose Abwasserkanle und -1eitungen - Weichmacherfreies Polyvinylchlorid (PVC-U) - Teil 3: Empfehlungen fr die Ve
14、rlegung This European Prestandard (ENV) was approved by CEN on 23 March 2001 as a prospective standard for provisional application. The period of validity of this ENV is limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on t
15、he question whether the ENV can be converted into a European Standard. CEN members are required to announce the existence of this ENV in the same way as for an EN and to make the ENV available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards
16、 in force (in parallel to the ENV) until the final decision about the possible conversion of the ENV into an EN is reached. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands,
17、Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMI?TEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 8-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved w
18、orldwide for CEN national Members. Ref. No. ENV 1401-3:2001 E Page 2 ENV 1401 -312001 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 3.1 3.2 3.3 3.4 4 5 Choice of stiffness (SN) series 4 General 4 Pipes 4 Fittings . 5 Application area code D . 5 Storage in sunlight 5 Handling and inst
19、allation at low temperature . 6 6 Push-fit joints (elastomeric sealings) 6 . I 8 Sivni cement joints . 6 Maximum deviation from straightness 6 9 Connection to rigid structures . 7 10 11 Repairs 7 Connection to existing pipes . 8 12 Testing on site . 8 Page 3 ENV 1401 -312001 Foreword This European P
20、restandard has been prepared by Technical Committee CENTTC 155 “Plastics piping systems and ducting systems“, the secretariat of which is held by NEN. This Prestandard is a Part of a System Standard for plastics piping systems of a particular material for a specified application. There is a number o
21、f such System Standards. System Standards are based on the results of the work undertaken in ISOTTC 138 “Plastics pipes, fittings and valves for the transport of fluids“, which is a Technical Committee of the International Organization for Standardization (ISO). They are supported by separate standa
22、rds on test methods to which references are made throughout the System Standard. The System Standards are consistent with general standards on functional requirements and on recommended practice for installation. EN 1401 consists of the following Parts, under the general title Plastics piping system
23、s for non-pressure underground drainage and sewerage - Unplasticized poly(viny1 chloride) (PVC-U) - Part 1: Specifications forpipes, fittings and the system - Part 2: Guidance for assessment of conformity (ENV) - Part 3: Guidance for installation (this prestandard) According to the CENKENELEC Intern
24、al Regulations, the national standards organizations of the following countries are bound to announce this European Prestandard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland
25、 and the United Kingdom. Page 4 ENV 1401 -32001 1 Scope This Prestandard, together with prENV 1046:2000 and EN 1610:1997, provides a material-specific set of guidelines for the installation of piping systems made of unplasticized poly(viny1 chloride) (PVC-U) in the field of non-pressure underground
26、drainage and sewerage. - outside the building structure (application area code “U“); - both buried in ground within the building structure (application area code “D“) and outside the building. This is reflected in the marking of products by “U“ and “UD“. 2 Normative references This European Prestand
27、ard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to
28、this European Prestandard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). prENV 1046:2000, Plastics piping and ducting systems - Systems outside building structures for the EN EN EN EN EN
29、conveyance of water or sewage - Practices for installation above and below ground 1295-1, Structural design of buried pipelines under various conditions of loading - Part 1: Geners! require,m?ts 1401 -1 :1998, Plastics piping systems for non-pressure underground drainage and sewerage - Unplasticized
30、 poly(viny1 chloride) (PVC-U) - Part 1: Specifications for pipes, fittings and the system 161 O: 1997, Construction and testing of drains and sewers IS0 1 78: 1 996, Plastics - Determination of flexural properties (IS0 178: 1993) IS0 9967:1995, Plastics pipes - Determination of creep ratio (IS0 9967
31、:1994) ISOK R 7073, Recornmended techniques for the installation of unplasticized poly(viny1 chloride) (PVC-U) buried drains and sewers 3 Choice of stiffness (SN) series 3.1 General PVC-U pipe is a flexible pipe. When loaded a flexible pipe deflects and presses into the surrounding material. This ge
32、nerates a reaction in the surrounding materials which controls deflection of the pipe. The amount of deflection which occurs is limited by the care exercised in the selection and laying of the bedding and side fill materials. 3.2 Pipes 3.2.1 Standard procedure The choice of the stiffness (SN) series
33、 may be made: - when the same class of pipe has previously proved to be satisfactory in the same condition; - or based on local practice (place of installation, usual installation procedure and experience); - or based on local regulation; - or based on Tables 1 and 2 of prENV 1046:2000; Page 5 ENV 1
34、401 -3:2001 Pipe series 1 Initial deflection Long term deflection - SDR 51 0,05 dn 0,08 d, SDR 41 and SDR 34 0,08 dn 0,lO d, - or based on structural design. 3.2.2 Structural design If a static calculation is required, information on methods is given in EN 1295-1 and the following parameters apply:
35、- Flexural modulus: - Creep ratio: ye 2 determined in accordance with EN IS0 9967:1995; - Deflection limits for calculation (according to ISOTTR 7073) given in Table 1. 2 3000 MPa determined in accordance with EN IS0 178:1996; Table 1 - Deflection limits 1) See EN 1401-1:1998. e NOTE the piping syst
36、em. Deflection up to 15 % e.g. caused by soil movement, will not affect the proper functioning of 3.3 Fittings Fittings according to EN 1401 -1 :1998, because of their geometry, have a stiff ness greater than the stiffness of the corresponding pipe. Therefore the following applies: r ! - fittings ma
37、rked with SDR 41 may be used with pipes up to SN 8 (SDR 34); - fittings of DN 2 400 marked with SDR 51 may be used with pipes up to SN 4 (SDR 41). NOTE When fittings conforming to one of the product standards listed in Annex C of EN 1401-1:1998 are used in combination with pipes and fittings conform
38、ing to EN 1401-1:1998, the appropriate recommended practice for installation applies. 3.4 Application area code D Only pipes and fittings marked “UD should be installed in situations covered by application area D: buried in ground either within the building structure or not more than 1 m from the bu
39、ilding structure. 4 Storage in sunlight Storage in direct sunlight for long periods and/or high temperatures could cause deformations affecting the jointing. To avoid this risk the following precautions are recommended: e a) to limit the height of the stacks of pipes; b) to shield the stacks of pipe
40、s from continuous and direct sunlight and arrange to allow the free passage of air around the pipes; c) to store the fittings in boxes or sacks manufactured so as to permit the free passage of air. The fading of the colour caused by outside storage does not affect the mechanical properties of pipes
41、and fittings made of PVC-U. Page 6 ENV 1401 -312001 5 Handling and installation at low temperature Although the impact strength of PVC-U pipes is reduced at low temperatures, experience has shown that even at substantially sub-zero temperatures, these products can be satisfactorily handled and laid,
42、 when adequate care is taken. A special marking on PVC-U pipes “ (ice crystal) shows that the pipe conforms to an additional impact test requirement for pipes intended to be installed at temperatures below -10 OC. 6 Push-fit joints (elastomeric sealings) Jointing should be carried out according to t
43、he manufacturers instructions. However, in the absence of such instructions, it is recommended that the following instructions are used: a) spigot end shall be chamfered; b) only sealing rings and lubricants supplied by the manufacturer of the pipe and/or fitting shall be used; c) for pipes cut on s
44、ite, the end to be jointed shall be cut square and chamfered to produce a finish equivalent to that of the pipes and fittings supplied by the manufacturer; d) the pipe end, the socket and the ring groove shall be clean and the sealing ring shall be seated correctly into its location; e) the lubrican
45、t shall be applied over the whole chamfered end. It shall not be aggressive to the PVC-U or to the elastomeric seal; f) the pipe shail be carefuiiy aiigned witn the adjoining pipe socket and pushed io the required insertion depth; g) when a lever is used on the pipe to push the joint, a block of woo
46、d should be inserted between the lever and the end of the pipe to prevent damage to the pipe. 7 Solvent cement joints Jointing should be carried out using the solvent cement recommended by the pipe and/or fitting manufacturer and following his instructions. NOTE Jointing using adhesives is described
47、 in Annex D of prENV 1046:2000. 8 Maximum deviation from straightness Pipes should normally be installed straight. However, as PVC pipes are flexible, the following deviation from straightness (see Figure 1) will not cause problems: d, I200 mm : R2 300 ,; d, 200 mm : R2 500 d,. Care may be necessary
48、 to avoid any extra stress on the socket joint itself. The greatest permitted angular deflection in the socket should be as follows: 2“ for d, I315 mm; 13“ for 315 mm 630 mm. Larger angular deflections are permitted in case of joints specifically designed for large angular deflections. In these case
49、s the manufacturer shall declare the designed angular deflection. Page 7 ENV 1401 -312001 h NOTE Approximately h 5: L2/2 and a 5: UR. Figure 1 - Parameters of deviation from straightness 9 Connection to rigid structures Special fittings for this purpose are available. In such cases the manufacturers instructions should be followed. 10 Repairs Slip-couplers or purpose-designed special fittings are available from manufacturers for effecting repairs. Because designs vary, it is necessary to follow individual manufacturers instructions. However, in the absence of such
