BS EN 476:2022

$167.15

General requirements for components used in drains and sewers

Published By	Publication Date	Number of Pages
BSI	2022	34

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Description

This document specifies general requirements to be respected in product standards for components such as pipes, fittings, inspection chambers and manholes with their respective joints intended for use in drains and sewers inside and outside buildings which operate as gravity systems allowing for a maximum pressure of 40 kPa. It also specifies general requirements for components used in hydraulically and pneumatically pressurized pipes, drains and sewers. NOTE 1 Where the term “inside buildings” is used in the context of components fixed inside buildings, it also includes pipes and fittings fixed on external surfaces of buildings. NOTE 2 This document is not a product standard and therefore not intended for the direct evaluation of products. This document covers components to be used in conveying in a satisfactory manner: — domestic wastewater; — rainwater and surface water; — other wastewater acceptable for discharge into the system. This document is applicable to components of circular and other cross sections. This document is equally applicable to components which are factory-made and to those constructed on site, where applicable. NOTE 3 This document does not apply to components used for trenchless construction according to EN 14457 and for components used for renovation of drains and sewers according to EN 13380. This document does not supersede the functional requirements of a complete system as defined in EN 752.

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PDF Pages	PDF Title
2	undefined
7	1 Scope
8	2 Normative references 3 Terms and definitions
14	4 Symbols and abbreviations
15	5 Dimensional requirements 5.1 General 5.2 Dimensions of pipes and fittings 5.2.1 Nominal sizes 5.2.2 Internal diameters and tolerances 5.2.3 Geometrical characteristics of pipes
16	5.2.4 Geometrical characteristics of fittings 5.2.4.1 General 5.2.4.2 Bends 5.2.4.3 Branches
17	5.3 Dimensions of manholes and inspection chambers 5.3.1 Manholes
18	5.3.2 Inspection chambers 5.3.3 Geometrical characteristics of manholes and inspection chambers 5.4 Covers and frames
19	5.5 Connection to the piping system and components 6 Performance requirements 6.1 General 6.2 Mechanical requirements of pipes and fittings
20	6.3 Mechanical requirements of shafts of manholes and inspection chambers 6.3.1 General 6.3.2 Circular sections 6.3.3 Other shapes
21	6.3.4 Tapers/cones, reducing and cover slabs 6.4 Tightness of components 6.4.1 Test pressure
22	6.4.2 Sealings for joints
23	6.4.3 Joint deflection 6.4.4 Joint shear load
24	6.4.5 Restrained joints 6.5 Continuity of invert 6.6 Temperature resistance 6.7 Dimensional stability
25	6.8 Smoothness of bore 6.9 Appearance 6.10 Chemical and corrosion resistance 6.11 Abrasion resistance 6.12 Coatings and linings 6.13 Durability 6.14 Resistance against cleaning operations 6.15 Handling 6.16 Reaction to fire 7 Test methods 7.1 Measurement of dimensions 7.1.1 Internal diameter
26	7.1.2 External diameter 7.1.3 Spigots and sockets 7.1.4 Wall thickness of pipes 7.1.5 Deviation from straightness of pipes 7.1.6 Deviation from squareness of the ends of the pipes 7.2 Load bearing capacity tests 7.2.1 Load bearing capacity tests for pipes 7.2.1.1 Crushing test – rigid pipes
27	7.2.1.2 Ring stiffness test – flexible pipes 7.2.2 Load bearing capacity tests for sections of manholes and shafts 7.2.2.1 General 7.2.2.2 Load bearing capacity test for reducing slabs and cover slabs 7.2.2.3 Load bearing capacity test for tapers 7.3 Longitudinal bending moment resistance test for pipes
28	7.4 Tightness tests 7.4.1 Tightness test of pipes, fittings, manholes and inspection chambers
29	7.4.2 Tightness test of joints
30	7.4.3 Test methods for drains and sewers components 7.4.3.1 Water tightness test 7.4.3.2 Airtightness test 7.4.3.3 Elevated temperature cycling test 8 Marking, labelling and packaging
31	Annex A (informative)Preferred nominal sizes

Additional information

Status	Definitive
Pages	34
Publication Date	2022-05-13
ISBN	978 0 539 13311 0
Standard Number	BS EN 476:2022
Title	General requirements for components used in drains and sewers
Identical National Standard Of	EN 476
Replaces	BS EN 476:2011
Descriptors	Pressure testing, Strength of materials, Mechanical testing, Pressure, Dimensions, Temperature, Watertightness tests, Size, Drainpipes, Pipe fittings, Marking, Manholes, Drainage, Pipe couplings, Pressure pipes, Sewerage, Sewers, Thermal-cycling tests, Water supply and waste systems (building, Performance, Pipes
Publisher	BSI
Committee	B/505
ICS Codes	93.030 - External sewage systems

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BS EN 476:2022

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