1、May 2013 Translation by DIN-Sprachendienst.English price group 13No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 93
2、.030!%$*“2010757www.din.deDDIN EN 295-7Vitrified clay pipe systems for drains and sewers Part 7: Requirements for pipes and joints for pipe jacking;English version EN 295-7:2013,English translation of DIN EN 295-7:2013-05Steinzeugrohrsysteme fr Abwasserleitungen und -kanle Teil 7: Anforderungen an R
3、ohre und Verbindungen fr Rohrvortrieb;Englische Fassung EN 295-7:2013,Englische bersetzung von DIN EN 295-7:2013-05Systmes de tuyaux en grs vitrifi pour les collecteurs dassainissement et lesbranchements Partie 7: Exigences pour les tuyaux et leurs assemblages destins au fonage;Version anglaise EN 2
4、95-7:2013,Traduction anglaise de DIN EN 295-7:2013-05Supersedes DIN EN 295-7:1995-12;together with DIN EN 295-1:2013-05, DIN EN 295-2:2013-05, DIN EN 295-4:2013-05, DIN EN 295-5:2013-05and DIN EN 295-6:2013-05 supersedes DIN EN 295-10:2005-05Supersedes: see belowwww.beuth.deDocument comprises 27 pag
5、esIn case of doubt, the German-language original shall be considered authoritative.04.13DIN EN 295-7:2013-05 2 A comma is used as the decimal marker. Start of application It should be noted that, in Germany, CE conformity marking of construction products will be permitted once this standard has been
6、 listed in the Official Journal of the European Union and/or the Bundesanzeiger (German Federal Gazette) and from the date given therein. For further information, users of this standard should refer to the websites of the European Commission or of the relevant building authority. National foreword T
7、his document (EN 295-7:2013) has been prepared by Technical Committee CEN/TC 165 “Waste water engineering” (Secretariat: DIN, Germany). The preliminary work was done by Working Group WG 2 “Vitrified clay pipes”. The responsible German body involved in its preparation was the Normenausschuss Wasserwe
8、sen (Water Practice Standards Committee), Working Committee NA 119-05-07 AA Steinzeugrohre. Amendments This standard differs from DIN EN 295-7:1995-12 and DIN EN 295-10:2005-05 as follows: a) nominal sizes DN 900, DN 1 200 and DN 1 400 added; b) requirements for the determination of jacking strength
9、 changed; c) requirements for the resistance to high pressure water jetting have been added; d) requirements for water absorption have been added; e) requirements for the reaction to fire have been added; f) Annex ZA has been added; g) test methods for invert conformity have been deleted and incorpo
10、rated in EN 295-3:2012; h) the standard has been editorially revised and brought in line with the current rules of presentation. Previous editions DIN EN 295-7: 1995-12 DIN EN 295-10: 2005-05 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 295-7 February 2013 ICS 93.030 Supersedes EN 295-10:200
11、5, EN 295-7:1995English Version Vitrified clay pipe systems for drains and sewers - Part 7: Requirements for pipes and joints for pipe jacking Exigences pour les tuyaux et leurs assemblages destins au fonage Steinzeugrohrsysteme fr Abwasserleitungen und -knale -Teil 7: Anforderungen an Rohre und Ver
12、bindungen fr Rohrvortrieb This European Standard was approved by CEN on 1 December 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lis
13、ts and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under
14、 the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yu
15、goslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROP
16、EN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 295-7:2013: ESystmes de tuyaux en grs vitrifi pour les collecteurs dassain
17、issement e t les b r a n c h e m e n ts - Partie 7: EN 295-7:2013 (E) 2 Contents Page Foreword . 4 1 Scope 6 2 Normative references . 6 3 Terms and definitions 6 4 Requirements for pipes for pipe jacking . 6 4.1 Materials, manufacture, water absorption and appearance . 6 4.2 Dimensions. 7 4.2.1 Gene
18、ral . 7 4.2.2 Internal diameter 7 4.2.3 Tolerance on the declared internal diameter 7 4.2.4 Continuity of invert 8 4.2.5 External diameter . 8 4.2.6 Length . 9 4.2.7 Squareness of ends . 9 4.2.8 Deviation from straightness 9 4.3 Strength 9 4.3.1 Crushing strength (FN) 9 4.3.2 Bending tensile strengt
19、h 10 4.3.3 Compressive strength 10 4.3.4 Jacking strength 10 4.3.5 Maximum working jacking load . 11 4.3.6 Fatigue strength under cyclic load 11 4.4 Watertightness . 11 4.5 Airtightness 11 4.6 Chemical resistance . 12 4.7 Hydraulic roughness 12 4.8 Abrasion resistance . 12 4.9 Resistance against hig
20、h pressure water jetting . 13 5 Requirements for joints for pipe jacking . 13 5.1 Joint materials 13 5.1.1 Rubber sealing elements . 13 5.1.2 Polyurethane sealing elements . 13 5.1.3 Stainless steel sleeves . 13 5.1.4 Polypropylene sleeve couplings . 13 5.1.5 Other materials . 13 5.2 Load transfer r
21、ings . 13 5.3 Watertightness of joints under deflection and shear load . 14 5.3.1 General . 14 5.3.2 Test pressures 14 5.4 Angular deflection 14 5.5 Shear resistance 14 5.6 Chemical and physical resistance to effluent . 14 5.7 Thermal cycling stability 15 5.8 Long-term thermal stability . 15 6 Commo
22、n requirements for pipes and joints . 15 6.1 Reaction to fire . 15 6.2 Durability 15 6.3 Dangerous substances 16 7 Designation 16 DIN EN 295-7:2013-05 EN 295-7:2013 (E) 3 8 Marking . 16 9 Evaluation of conformity 17 9.1 General . 17 9.2 Initial type testing . 17 9.3 Factory production control (FPC)
23、17 Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU Construction Products Directive . 18 ZA.1 Scope and relevant characteristics . 18 ZA.2 Procedures for the attestation of conformity of vitrified clay pipes and joints for pipe jacking 20 ZA.2.1 Systems of
24、 attestation of conformity 20 ZA.2.2 EC declaration of conformity . 21 ZA.3 CE marking . 21 ZA.3.1 General . 21 ZA.3.2 CE marking on the product 21 ZA.3.3 CE marking in the accompanying documents 22 Bibliography 25 DIN EN 295-7:2013-05 EN 295-7:2013 (E) 4 Foreword This document (EN 295-7:2013) has b
25、een prepared by Technical Committee CEN/TC 165 “Wastewater engineering”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2013, and conflicting natio
26、nal standards shall be withdrawn at the latest by August 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersede
27、s EN 295-7:1995 and together with EN 295-1:2013, EN 295-2:2013, EN 295-4:2013, EN 295-5:2013 and EN 295-6:2013 it supersedes EN 295-10:2005. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential require
28、ments of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. The main changes with respect to the previous edition are listed below: nominal sizes DN 900, DN 1 200 and DN 1 400 added; requirements for the determination of jack
29、ing strength changed; requirements for the resistance to high pressure water jetting added; requirements for water absorption added; reaction to fire added; Annex ZA added; editorially revised. The standard series EN 295 “Vitrified clay pipe systems for drains and sewers“ consists of the following p
30、arts: Part 1: Requirements for pipes, fittings and joints Part 2: Evaluation of conformity and sampling Part 3: Test methods Part 4: Requirements for adaptors, connectors and flexible couplings Part 5: Requirements for perforated pipes and fittings Part 6: Requirements for components of manholes and
31、 inspection chambers Part 7: Requirements for pipes and joints for pipe jacking (the present document) According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia
32、, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, DIN EN 295-7:2013-05 EN 295-7:2013 (E) 5 Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Sp
33、ain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 295-7:2013-05 EN 295-7:2013 (E) 6 1 Scope This European Standard specifies requirements for vitrified clay pipes and joints for pipe jacking for buried drain and sewer systems for the conveyance of wastewater (including domestic wastewa
34、ter, surface water and rainwater) under gravity and periodic hydraulic surcharge or under continuous low head of pressure. Pipe jacking techniques include micro-tunnelling, pipe-eating, pipe bursting and where appropriate lining with discrete pipes. This standard also specifies requirements for rubb
35、er, polyurethane, polypropylene, stainless steel and other materials used for joints for pipe jacking. NOTE Corresponding provisions for the evaluation of conformity (ITT and FPC) and sampling and those for the test methods are further specified in EN 295-2 and EN 295-3, respectively. 2 Normative re
36、ferences The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies
37、. EN 295-1:2013, Vitrified clay pipe systems for drains and sewers Part 1: Requirements for pipes, fittings and joints EN 295-2:2013, Vitrified clay pipe systems for drains and sewers Part 2: Evaluation of conformity and sampling EN 295-3:2012, Vitrified clay pipe systems for drains and sewers Part
38、3: Test methods EN 312, Particleboards Specifications EN 681-1, Elastomeric seals Materials requirements for pipe joint seals used in water and drainage applications Part 1: Vulcanized rubber EN 681-4, Elastomeric seals Materials requirements for pipe joint seals used in water and drainage applicati
39、ons Part 4: Cast polyurethane sealing elements EN 10088-2:2005, Stainless steels Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 295-1:2
40、013 and the following apply. 3.1 jacking strength declared capacity of the pipe to carry axial load without taking site conditions into account 3.2 maximum working jacking load calculated allowable axial load on the pipe during construction, taking site conditions into account 4 Requirements for pip
41、es for pipe jacking 4.1 Materials, manufacture, water absorption and appearance For material, manufacture, water absorption and appearance, jacking pipes shall comply with EN 295-1:2013, 5.1. DIN EN 295-7:2013-05 EN 295-7:2013 (E) 7 4.2 Dimensions 4.2.1 General Relevant dimensions of pipes or pipe s
42、ections shall be measured after grinding or cutting of ends. 4.2.2 Internal diameter The internal diameter shall not be less than the values given in Table 1. Table 1 Internal diameter Nominal size DN Minimum internal diameter mm 100 96 150 146 200 195 225 219 250 244 300 293 400 390 500 487 600 585
43、 700 682 800 780 900 878 1 000 975 1 200 1 170 1 400 1 365 Other nominal sizes can be manufactured to comply with this standard, provided that the minimum internal diameter shall be not less than 97,5 % of the nominal size, rounded to the nearest whole mm. 4.2.3 Tolerance on the declared internal di
44、ameter The internal diameter of a pipe shall not deviate from the manufacturers declared value by an amount greater than the tolerance given in Table 2. DIN EN 295-7:2013-05 EN 295-7:2013 (E) 8 Table 2 Tolerance on internal diameter Nominal size DN Tolerance on declared internal diameter mm 300 5 40
45、0 6 500 7,5 600 9 700 12 800 12 900 12 1 000 15 1 200 18 1 400 30 4.2.4 Continuity of invert The calculated difference in invert levels between pipes shall not exceed the values given in Table 3, when measured in accordance with EN 295-3:2012, Clause 22. If it is necessary for achieving continuity o
46、f invert, the pipe shall be marked. Table 3 Continuity of invert Nominal size DN Continuity of invert mm 400 4 400 0,01 x DN 4.2.5 External diameter The external diameter of the barrel of a pipe shall not deviate from the manufacturers declared value by an amount greater than the tolerance given in
47、Table 4. DIN EN 295-7:2013-05 EN 295-7:2013 (E) 9 Table 4 Tolerance on external diameter Nominal size DN Tolerance on declared external diameter mm 300 010400 012500 015600 018700 024800 024900 0281 000 0301 200 0361 400 0604.2.6 Length Lengths of pipes are not specified in this standard. The length
48、 shall be measured at 90 intervals around the circumference and the average value calculated. The tolerance on the measured average length shall be 2 mm on the manufacturers declared nominal length. 4.2.7 Squareness of ends When tested in accordance with EN 295-3:2012, 5.2, the maximum deviation fro
49、m squareness measured at the pipe ends shall be not greater than 1 mm. 4.2.8 Deviation from straightness When tested using a straight edge in the maximum bending plane, along the whole length of the pipe barrel which is not affected by jointing or grinding, the deviation from straightness at the mid-point shall be not greater than 5 mm. 4.3 Strength 4.3.1 Crushing strength (FN) When tested in accordance with EN 295-3:2012, Clause 7, the crushing strength (FN) of
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