1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 295-5:2013Vitrified clay pipe systems for drains and sewersPart 5: Requirements for perforated pipes and fittingsBS EN 295-5:2013 BRITISH STANDARDNational forewordThis Brit
2、ish Standard is the UK implementation of EN 295-5:2013. It supersedes BS EN 295-5:1994 and, together with BS EN 295-1:2013, BS EN 295-2:2013, BS EN 295-4:2013, BS EN 295-6:2013, and BS EN 295-7:2013, it supersedes BS EN 295-10:2005, which is withdrawn.The UK participation in its preparation was entr
3、usted to Technical Committee B/505, Wastewater engineering.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The
4、 British Standards Institution 2013. Published by BSI Standards Limited 2013.ISBN 978 0 580 70650 9 ICS 23.040.50; 91.140.80; 93.030Compliance with a British Standard cannot confer immunityfrom legal obligations.This British Standard was published under the authority of the Standards Policy and Stra
5、tegy Committee on 28 February 2013.Amendments issued since publicationDate Text affectedBS EN 295-5:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 295-5 February 2013 ICS 93.030 Supersedes EN 295-10:2005, EN 295-5:1994English Version Vitrified clay pipe systems for drains and sewers - Part
6、 5: Requirements for perforated pipes and fittings Systmes de tuyaux en grs vitrifi pour les collecteurs dassainissement et les branchements - Partie 5: Exigences applicables aux tuyaux perfors et raccords Steinzeugrohrsysteme fr Abwasserleitungen und -kanle -Teil 5: Anforderungen an gelochte Rohre
7、und FormstckeThis 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 lists and biblio
8、graphical 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 the responsi
9、bility 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 Yugoslav Republ
10、ic 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 EUROPEN DE NORMALI
11、SATION 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 295-5:2013: EBS EN 295-5:2013EN 295-5:2013 (E) 2 Contents Page Foreword . 3 1 Scope 42
12、Normative references . 4 3 Terms and definitions 4 4 Requirements for pipes and fittings 4 4.1 Material, manufacture, water absorption and appearance . 4 4.2 Internal diameter 4 4.3 Length . 5 4.4 Deviation from straightness 5 4.5 Angle of curvature and radius of bends 5 4.6 Branch angle of junction
13、s 6 4.7 Perforations 6 4.7.1 General . 6 4.7.2 Arrangement of perforations . 6 4.7.3 Area of perforations . 6 4.8 Crushing strength (FN) 6 4.9 Chemical resistance . 7 4.10 Fatigue strength under cyclic load 8 5 Joint assemblies 8 6 Common requirements for pipes and fittings . 8 6.1 Reaction to fire
14、. 8 6.2 Durability 8 6.3 Dangerous substances 8 7 Designation 9 8 Marking . 9 9 Evaluation of conformity 10 9.1 General . 10 9.2 Initial type testing . 10 9.3 Factory production control (FPC) 10 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of the
15、EU Construction Products Directive . 11 ZA.1 Scope and relevant characteristics . 11 ZA.2 Procedures for the attestation of conformity of perforated vitrified clay pipes and fittings 12 ZA.2.1 Systems of attestation of conformity 12 ZA.2.2 EC declaration of conformity . 13 ZA.3 CE marking . 14 ZA.3.
16、1 General . 14 ZA.3.2 CE marking on the product 14 ZA.3.3 CE marking in the accompanying documents 15 Bibliography 17 BS EN 295-5:2013EN 295-5:2013 (E) 3 Foreword This document (EN 295-5:2013) has been prepared by Technical Committee CEN/TC 165 “Wastewater engineering”, the secretariat of which is h
17、eld 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 national standards shall be withdrawn at the latest by August 2013. Attention is drawn to the possibility t
18、hat 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 supersedes EN 295-5:1994 and together with EN 295-1:2013, EN 295-2:2013, EN 295-4:2013, EN 295-6:2013 and EN 29
19、5-7:2013 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 requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an
20、 integral part of this document. The main changes with respect to the previous edition are listed below: 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
21、295 “Vitrified clay pipe systems for drains and sewers“ consists of the following parts: 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 fo
22、r perforated pipes and fittings (the present document) Part 6: Requirements for components of manholes and inspection chambers Part 7: Requirements for pipes and joints for pipe jacking According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries
23、 are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
24、 Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 295-5:2013EN 295-5:2013 (E) 4 1 Scope This European Standard specifies requirements for perforated pipes and compatible fittings made from vitrified clay with or without sockets for use in land d
25、rains and drainage of waste tips. They are also used for percolation into the ground. This standard specifies different strength classes and areas of perforations. NOTE 1 The specifiers/purchasers can select them according to their requirements. NOTE 2 Corresponding provisions for the evaluation of
26、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 references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated ref
27、erences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. 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 s
28、ystems for drains and sewers Part 2: Evaluation of conformity and sampling EN 295-3:2012, Vitrified clay pipe systems for drains and sewers Part 3: Test methods 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 295-1:2013 and the following apply. 3.1 ar
29、ea of perforations total area of holes or slots per metre length measured on the inside of the pipe 4 Requirements for pipes and fittings 4.1 Material, manufacture, water absorption and appearance For material, manufacture, water absorption and appearance, perforated pipes and fittings shall comply
30、with EN 295-1:2013, 5.1. 4.2 Internal diameter The internal diameter shall not be less than the values according to Table 1. BS EN 295-5:2013EN 295-5:2013 (E) 5 Table 1 Internal diameter Nominal size DN Minimum internal diameter mm 75 100 125 150 200 225 72 96 121 146 195 219 250 300 350 400 450 500
31、 600 244 293 341 390 439 487 585 Other nominal sizes can be manufactured to comply with this standard, providing that the minimum internal diameter shall be not less than 97,5 % of the nominal size, rounded to the nearest whole mm. 4.3 Length Preferred lengths of pipes and straight fittings are not
32、specified in this standard. The length shall be measured to the nearest whole millimetre. The tolerance on the declared nominal length of pipes and straight fittings shall be from 2 % to + 5 %, or 10 mm, whichever is the larger. 4.4 Deviation from straightness When tested in accordance with EN 295-3
33、:2012, Clause 6, the deviation from straightness of the barrel of a pipe shall not be greater than the values given in Table 2, measured to the nearest whole millimetre. Table 2 Deviation from straightness Nominal size DN Maximum deviation from straightness mm/m of nominal length 250 4 4.5 Angle of
34、curvature and radius of bends The preferred nominal angles of curvature of bends are 15; 22,5; 30 and 45. The tolerance on angle shall be 5 of the nominal value. The centreline radius shall not be less than the nominal size in millimetres. BS EN 295-5:2013EN 295-5:2013 (E) 6 4.6 Branch angle of junc
35、tions The preferred nominal angles of junction arms are 45 and 90. The tolerance for the branch angle shall be 5 of the nominal value. 4.7 Perforations 4.7.1 General The holes in perforated pipes shall be either circular or slotted, and shall be cleanly cut. They shall be positioned in rows parallel
36、 to the longitudinal axis of the pipe, the holes in each row being spaced equidistantly. The permissible deviation of the spacing between the holes in any row shall not exceed 20 mm. Pipes need not be perforated within 100 mm of their ends. Fittings need not be perforated. The diameter of circular h
37、oles at the inside of the pipe shall be not greater than 13 mm. lf slots are used instead of circular holes, the width of slots at the inside of the pipe shall be not greater than 8 mm. 4.7.2 Arrangement of perforations The perforations shall be arranged in one of the following configurations shown
38、in Figure 1: a) totally perforated pipe (TP) which is symmetrically perforated around its entire circumference; b) locally perforated pipe (LP) which is symmetrically perforated over up to 270 of its circumference; c) multipurpose pipe (MP), which is symmetrically perforated over up to 120 of its ci
39、rcumference. Figure 1 Arrangement of perforations 4.7.3 Area of perforations The total area of holes measured at the pipe internal surface shall be either: Type A: not less than 3 mm2per millimetre nominal size per metre nominal length; or Type B: not less than 10 000 mm2per metre nominal length. 4.
40、8 Crushing strength (FN) When tested in accordance with EN 295-3:2012, Clause 7, with no perforations under the top bearer, the crushing strength (FN) of pipes or pipe sections shall be not less than the values given in Tables 3 and 4. BS EN 295-5:2013EN 295-5:2013 (E) 7 Table 3 Crushing strength fo
41、r pipes DN 75 to DN 150 Nominal size DN Minimum crushing strength FNkN/m 75 100 125 150 20 20 20 20 22 22 22 22 28 28 28 28 Higher crushing strengths may be declared for DN 75 to DN 150 pipes, provided that the increase is in steps of 6 kN/m. Table 4 Crushing strength for pipes DN 200 Nominal Size D
42、N Class 95 120 160 Minimum crushing strength FNkN/m 200 225 250 24 28 30 32 36 40 300 350 400 38 36 42 48 48 56 64 450 500 43 48 54 60 72 80 The crushing strength of other nominal sizes shall be calculated in accordance with Formula (1). 1000ClassNDNF= (1) Higher crushing strengths than those given
43、in Table 4 can be declared providing that they conform to the requirements of the next higher class. Classes are restricted to 95, 120 and 160, thereafter in increments of 20. NOTE For the purpose of structural design, the nominal wall thickness and/or nominal outside diameter are provided by the ma
44、nufacturer. 4.9 Chemical resistance When tested in accordance with EN 295-3:2012, Clause 13, the loss of material from the test piece shall be declared. NOTE Under normal conditions of use, vitrified clay pipes are considered to be resistant to chemical attack and expected to show typical values of
45、loss of material between 0,1 % and 0,25 %. BS EN 295-5:2013EN 295-5:2013 (E) 8 4.10 Fatigue strength under cyclic load Where the resistance to fatigue under cyclic loads is required, it shall be demonstrated by testing in accordance with EN 295-3:2012, Clause 11, when test pieces shall not fail. 5 J
46、oint assemblies This standard does not specify requirements for joints. Perforated pipes can be fitted with flexible joints (e.g. according to EN 295-1) or used with other joints. Where necessary, the joint material requirements shall be agreed between the manufacturer and the specifier/purchaser. 6
47、 Common requirements for pipes and fittings 6.1 Reaction to fire Where the use of perforated vitrified clay pipes and fittings is subject to national regulatory requirements on reaction to fire, their reaction to fire performance shall be declared. Perforated vitrified clay pipes and fittings in use
48、 are classified as Class A1 without the need for testing (CWT) in accordance with the relevant Commission decision1). NOTE1 Vitrified clay, as a homogeneously distributed material for these products, is considered as material of known and stable performance with respect to the reaction to fire perfo
49、rmance as it does not consist of any organic material and consequently does not contribute to the fire. Under this condition it may be considered as the Class A1 material. NOTE 2 The class of reaction to fire performance of perforated vitrified clay pipes with their joints is regarded as the class for the constituent material (i.e. vitrified clay). Conversely, where use of this product is not subject to national regulatory requirements on reaction to fire, either the Class A1 (see above) o
