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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 476 : 1998 The Euro
2、pean Standard EN 476 : 1997 has the status of a Briitish Standard ICS 91.140.80 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW General requirements for components used in discharge pipes, drains and sewers for gravity systems This British Standard, having been prepared under
3、the direction of the Sector Board for Building and Civil Engineering, was published under the authority of the Standards Board and comes into effect on 15 January 1998 BSI 1998 ISBN 0 580 28687 8 BS EN 476 : 1998 Amendments issued since publication Amd. No.DateText affected National foreword This Br
4、itish Standard is the English language version of EN 476 : 1997. The UK participation in its preparation was entrusted by Technical Committee B/505, Wastewater, to Subcommittee B/505/1, General requirements for pipes and fittings, which has the responsibility to: aid enquirers to understand the text
5、; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtain
6、ed on request to its secretary. Cross-references The British 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 facilit
7、y of the BSI Standards Electronic Catalogue. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 12, an inside back cover and a back cover. CEN Europ
8、ean Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 476 : 1997 E EUROP
9、EAN STANDARDEN 476 NORME EUROPE ENNE EUROPA ISCHE NORM July 1997 ICS 13.060.30 Descriptors: Sanitation, water removal, water flow, sewage, junctions, water pipelines, piping, specifications, performance evaluation, dimensions, tests, marking English version General requirements for components used i
10、n discharge pipes, drains and sewers for gravity systems Prescriptions ge ne rales pour les composants utilise s dans les re seaux de vacuation, de branchement et dassainissement, a e coulement libre Allgemeine Anforderungen an Bauteile fu r Abwasserkana le und -leitungen fu r Schwerkraftentwas seru
11、ngssysteme This European Standard was approved by CEN on 1997-06-14. 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 bibliographic
12、al references concerning such national standards may be obtained on application to the Central Secretariat 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 responsibility of a CEN m
13、ember into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Po
14、rtugal, Spain, Sweden, Switzerland and United Kingdom. Page 2 EN 476 : 1997 BSI 1998 Foreword This European Standard has been prepared by Technical Committee CEN/TC 165, Waste water engineering, the Secretariat of which is held by DIN. This European Standard provides the basis for the preparation or
15、 revision of product standards for discharge pipes, drains and sewers operating as gravity systems (see clause 1 Scope). Components meeting the requirements of this European Standard and in permanent or in temporary contact with water intended for human consumption, will not adversely affect the qua
16、lity of that water. Therefore this standard does not contravene the EC-Council Directives 75/440, 79/869 and 80/778. 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 January 1998, and conflicting n
17、ational standards shall be withdrawn at the latest by January 1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, G
18、reece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden and the United Kingdom. Contents Page Foreword2 1Scope4 2Normative references4 3Definitions, symbols and abbreviations5 3.1external diameter OD5 3.2factory production control5 3.3flexible pipe5 3.4gravity system
19、5 3.5invert5 3.6internal diameter ID5 3.7joint5 3.8nominal size DN5 3.9pipe barrel5 3.10 proof load5 3.11 quality control system5 3.12 rigid pipe5 3.13 ring stiffness5 3.14 semi-rigid pipe5 3.15 surface water5 3.16 ultimate load5 4General functional and dimensional requirements5 4.1Dimensions of pip
20、es and fittings5 4.2Geometry of pipes6 4.3Geometry of fittings6 4.4Smoothness of bore6 4.5Appearance and soundness6 4.6Longitudinal bending moment resistance6 4.7Interconnection7 4.8Corrosion resistance7 4.9Abrasion resistance7 4.10 Modification7 4.11 Coatings and linings7 4.12 Long-term behaviour7
21、4.13 Durability7 4.14 Sealing elements7 Page 3 EN 476 : 1997 BSI 1998 Page 5Functional requirements for discharge components inside buildings7 5.1General7 5.2Strength of pipes7 5.3Watertightness7 5.4Airtightness7 5.5Temperature7 5.6Thermal expansion7 6Functional and dimensional requirements for drai
22、ns and sewers that are generally buried7 6.1Dimensions of manholes and inspection chambers7 6.2Continuity of invert8 6.3Load bearing capacity and stiffness8 6.4Strength of manholes, shafts and inspection chambers above the base unit8 6.5Watertightness8 6.6Temperature8 6.7Dimensional stability9 7Gene
23、ral test methods9 7.1Measurement of diameters and wall thicknesses9 7.2Measurement of deviation from straightness of barrels9 7.3Measurement of deviation from squareness of the ends of the pipes9 7.4Longitudinal bending moment resistance test for pipes9 Page 8Test methods for discharge components fo
24、r use inside buildings9 8.1Watertightness test9 8.2Elevated temperature cycling test9 8.3Airtightness test10 9Test methods for components for drains and sewers outside buildings10 9.1Continuity of invert10 9.2Crushing/stiffness tests for pipes10 9.3Crushing/stiffness tests for sections of manholes a
25、nd shafts10 9.4Loading test for reducing slabs10 9.5Loading test for tapers10 9.6Watertightness tests10 10Quality control11 11Marking11 Page 4 EN 476 : 1997 BSI 1998 1 Scope This European Standard specifies general requirements for components such as pipes, fittings and manholes with their respectiv
26、e joints intended for use in discharge pipes, drains and sewers which operate as gravity systems where any pressure likely to occur is a maximum of 40 kPa. This European Standard provides the general basis for the preparation or revision of product standards. It is not applicable for the evaluation
27、of products. It is applicable as a reference for drawing up a product specification, if there is no product standard available. This European Standard includes marking, quality control and certification requirements. This European Standard comprises: common requirements for all components; specific
28、requirements for discharge components for use inside buildings or attached to the external surfaces of buildings; specific requirements for components for use in drain and sewer systems. In product standards, combinations of these requirements may be applied where appropriate, e.g. for the component
29、s buried in the ground inside the building structure. This European Standard covers components to be used in conveying in a satisfactory manner: domestic waste water; rainwater and surface water; and, other waste waters (e.g. industrial waste water) that will not damage the components. This European
30、 Standard applies to components of circular and other cross-sections. This European Standard applies equally to components which are factory-made and to those constructed on site, where applicable. 2 Normative references This European Standard incorporates by dated or undated reference, provisions f
31、rom 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 this standard only when incorporated in it by amendment or r
32、evision. For undated references the latest edition of the publication referred to applies. EN ISO 9001Quality systems Model for quality assurance in design, development, production, installation and servicing (ISO 9001 : 1994). EN ISO 9002Quality systems Model for quality assurance in production, in
33、stallation and servicing (ISO 9002 : 1994) EN 45011General criteria for certification bodies operating product certification EN 45012General criteria for certification bodies operating quality system certification ISO 48Rubber, vulcanized or thermoplastic Determination of hardness (hardness between
34、10 IRHD and 100 IRHD) Page 5 EN 476 : 1997 BSI 1998 3 Definitions, symbols and abbreviations For the purposes of this standard the following definitions apply: 3.1 external diameter OD Mean external diameter of the pipe barrel at any cross-section. For pipes with external profiles on the barrels, th
35、e external diameter is the maximum diameter when viewed in cross-section. 3.2 factory production control Surveillance mode in which a manufacturer performs its own surveillance on the result of its production according to a set of rules formally specified in quality assurance or quality management p
36、rovision. 3.3 flexible pipe Pipe, the load carrying capacity of which is limited by diametral deformation under load to the ultimate design criteria without breaking or overstressing. 3.4 gravity system System where flow is caused by the force of gravity and where the pipe normally operates partiall
37、y full. 3.5 invert Lowest point of the internal surface of the barrel of a pipe or channel at any cross-section. 3.6 internal diameter ID Mean internal diameter of the pipe barrel at any cross-section. 3.7 joint Connection between the adjacent ends of two components including the means of sealing. 3
38、.8 nominal size DN Numerical designation of size of component, which is a convenient integer approximately equal to a manufacturing dimension in mm. This can apply to either the internal diameter (DN/ID) or the external diameter (DN/OD). 3.9 pipe barrel Cylindrical part of the pipe with a uniform cr
39、oss-section excluding socket and spigot. 3.10 proof load Specified test load which a component withstands where the related requirements of the product standard are met. 3.11 quality control system Organizational structure, responsibilities, procedures, processes and resources for implementing quali
40、ty management. 3.12 rigid pipe Pipe, the load carrying capacity of which is limited by breaking or overstressing, without significant deformation of its cross-section. 3.13 ring stiffness Resistance of a pipe to diametral deflection in response to external loading applied along one diametric plane g
41、iven as follows: S = EI D3m where : Sis the ring stiffness of the pipe in kilonewtons per square metre; Eis the modulus of elasticity in flexure in the circumferential direction, in kilonewtons per square metre; Iis second moment of area of the pipe wall in the longitudinal direction, per unit lengt
42、h, in metres to the fourth power per metre; Dmis the diameter of the neutral axis of the pipe wall, in metres. 3.14 semi-rigid pipe Pipe, the load carrying capacity of which is limited by diametral deformation or by breaking or overstressing. 3.15 surface water Water drained from the surface of buil
43、dings, structures or the ground. 3.16 ultimate load Load which causes failure as defined in product standards. 4 General functional and dimensional requirements Product standards may include specifications which are more stringent, but not less stringent than those in this standard. 4.1 Dimensions o
44、f pipes and fittings 4.1.1 Nominal sizes Nominal sizes DN shall be given in product standards as DN/ID or DN/OD. Nominal sizes specified in product standards shall preferably be selected from table 1 or table 2. Other nominal sizes may be specified in product standards. Table 1. Nominal sizes: DN/ID
45、 30, 40, 50, 60, 70, 80, 90, 100, 125, 150, 200, 225, 250, 300, 400, 500, 600, 800, 1000, 1200, 1400, 1600, 1800, 2000, 2200, 2500, 2800, 3000, 3500, 4000 Table 2. Nominal sizes: DN/OD 32, 40, 50, 63, 75, 90, 100, 110, 125, 160, 200, 250, 315, 400, 500, 630, 800, 1000, 1200, 1400, 1600, 1800, 2000 N
46、OTE. For each material, it is intended to limit the number of nominal sizes. Page 6 EN 476 : 1997 BSI 1998 4.1.2 Internal diameters and limit deviations Product standards shall specify: internal diameters and limit deviations; or external diameters, wall thicknesses and limit deviations; or minimum
47、bores. (see 7.1) Maximum limit deviations on the internal diameter ID are in table 3. Table 3. Maximum limit deviations on internal diameters Nominal sizeLimit deviations on mean internal diameter mm Limit deviations on individual internal diameter mm DN # 100 0,05 DN0,1 DN 100 600 1530 NOTE. DN in
48、table 3 can be applied to either DN/ID or DN/OD. 4.2 Geometry of pipes Pipe straightness shall be within tolerances specified in product standards (see 7.2). The angle between the planes of the end face of the pipe and the longitudinal axis of the pipe shall be 90 with a tolerance such that the func
49、tion of the pipe joint shall not be impaired (see 7.3). A range of pipe lengths may be specified in product standards. Product standards shall specify tolerances on pipe lengths, even if the lengths themselves are not specified. 4.3 Geometry of fittings 4.3.1 General Angles for fittings shall be stated in product standards. Preferred angles for fittings are 11 159, 15, 20 to 22 309, 30, 45, 67 to 70 and 87 to 90. Other angles may be allowed in product standards. 4.3.2 Bends The minimum radii r of bends, defi
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