EN 476:2022

General requirements for components used in drains and sewers

EN 476:2022

Name:EN 476:2022   Standard name:General requirements for components used in drains and sewers
Standard number:EN 476:2022   language:English language
Release Date:26-Apr-2022   technical committee:CEN/TC 165 - Waste water engineering
Drafting committee:CEN/TC 165/WG 1 - General requirements for pipes   ICS number:23.040.05 - Pipeline and its parts for external sewage systems

SLOVENSKI STANDARD
01-junij-2022
Nadomešča:
SIST EN 476:2011
Splošne zahteve za elemente za odvod odpadne vode in kanalizacijo
General requirements for components used in drains and sewers
Allgemeine Anforderungen an Bauteile für Abwasserleitungen und -kanäle
Exigences générales pour les composants utilisés pour les branchements et les
collecteurs d’assainissement
Ta slovenski standard je istoveten z: EN 476:2022
ICS:
13.060.30 Odpadna voda Sewage water
93.030 Zunanji sistemi za odpadno External sewage systems
vodo
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 476
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2022
EUROPÄISCHE NORM
ICS 93.030; 23.040.05 Supersedes EN 476:2011
English Version
General requirements for components used in drains and
sewers
Exigences générales pour les composants utilisés pour Allgemeine Anforderungen an Bauteile für
les branchements et les collecteurs d'assainissement Abwasserleitungen und -kanäle
This European Standard was approved by CEN on 20 March 2022.

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 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 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 476:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 6
3 Terms and definitions . 6
4 Symbols and abbreviations . 12
5 Dimensional requirements. 13
5.1 General . 13
5.2 Dimensions of pipes and fittings . 13
5.2.1 Nominal sizes . 13
5.2.2 Internal diameters and tolerances . 13
5.2.3 Geometrical characteristics of pipes . 13
5.2.4 Geometrical characteristics of fittings . 14
5.3 Dimensions of manholes and inspection chambers . 15
5.3.1 Manholes . 15
5.3.2 Inspection chambers . 16
5.3.3 Geometrical characteristics of manholes and inspection chambers . 16
5.4 Covers and frames . 16
5.5 Connection to the piping system and components . 17
6 Performance requirements . 17
6.1 General . 17
6.2 Mechanical requirements of pipes and fittings . 17
6.3 Mechanical requirements of shafts of manholes and inspection chambers . 18
6.3.1 General . 18
6.3.2 Circular sections . 18
6.3.3 Other shapes . 18
6.3.4 Tapers/cones, reducing and cover slabs . 19
6.4 Tightness . 19
6.4.1 Test pressure . 19
6.4.2 Sealings for joints . 20
6.4.3 Joint deflection . 21
6.4.4 Joint shear load . 21
6.4.5 Restrained joints . 22
6.5 Continuity of invert . 22
6.6 Temperature resistance . 22
6.7 Dimensional stability . 22
6.8 Smoothness of bore . 23
6.9 Appearance . 23
6.10 Chemical and corrosion resistance . 23
6.11 Abrasion resistance . 23
6.12 Coatings and linings . 23
6.13 Durability . 23
6.14 Resistance against cleaning operations . 23
6.15 Handling . 23
6.16 Reaction to fire . 23
7 Test methods . 23
7.1 Measurement of dimensions . 23
7.1.1 Internal diameter . 23
7.1.2 External diameter . 24
7.1.3 Spigots and sockets . 24
7.1.4 Wall thickness of pipes . 24
7.1.5 Deviation from straightness of pipes . 24
7.1.6 Deviation from squareness of the ends of the pipes . 24
7.2 Load bearing capacity tests . 24
7.2.1 Load bearing capacity tests for pipes . 24
7.2.2 Load bearing capacity tests for sections of manholes and shafts. 25
7.3 Longitudinal bending moment resistance test for pipes . 25
7.4 Tightness tests . 26
7.4.1 Tightness test of pipes, fittings, manholes and inspection chambers . 26
7.4.2 Tightness test of joints . 27
7.4.3 Test methods for drains and sewers components . 28
8 Marking, labelling and packaging . 28
Annex A (informative) Preferred nominal sizes . 29
Bibliography . 30
European foreword
This document (EN 476:2022) has been prepared by Technical Committee CEN/TC 165 “Waste water
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 October 2022, and conflicting national standards shall
be withdrawn at the latest by October 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 476:2011.
The specifications of this document are based on the requirements for wastewater systems specified in
EN 752 and EN 12056 (all parts). Significant technical differences between this edition and EN 476:2011
are as follows:
a) the Scope is clarified in the way that this document contains requirements for product standards;
b) Table 1 (Preferred nominal sizes DN/ID) and Table 2 (Preferred nominal sizes DN/OD), paragraph
5.2.1, are moved to the new Annex A;
c) the paragraphs under 5.3, Dimensions of manholes and inspection chambers, are completely
rewritten, with minimum internal dimension for different cross sections (always in compliance with
the national regulations in force at the place of installation);
d) for reaction to fire, a new 6.16 is added.
This document provides a framework for the development of product standards to be used in drain and
sewer systems inside and outside buildings. In Figure 1 the position of this document related to other
standards on this subject is given.
This document describes the general requirements to be taken into account in product standards.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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,
Cyprus, Czech Republic, Denmark, Estonia,
...

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