BS EN 13476-1:2007

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions, symbols and abbreviations
   3.1 Definitions
        3.1.1 General definitions
        3.1.2 Geometrical definitions
   3.2 Symbols and abbreviations
4 Material
   4.1 General
   4.2 Utilisation of non-virgin material
   4.3 Sealing ring retaining components
   4.4 Sealing rings
   4.5 Fused or welded joints
5 Designation of wall construction
6 Appearance and colour
   6.1 Appearance
   6.2 Colour
7 Geometrical characteristics
8 Types of fittings
   8.1 General
   8.2 Design length of fittings
9 System performance related test methods and characteristics
10 Marking, general
   10.1 Presentation
   10.2 Marking process
   10.3 Size
Annex A (informative) Characteristics of PVC-U, PP and PE pipes
        and fittings
        A.1 General
        A.2 Material characteristics
        A.3 Chemical resistance
        A.4 Abrasion resistance
        A.5 Hydraulic roughness
Annex B (informative) Structural design
        B.1 General
        B.2 Structural design based on practical experience
        B.3 Structural design based on a design calculations
        B.4 Selection of fitting stiffness or class
Annex C (informative) Designation of pipes and corresponding
        fittings
Annex D (informative) Guidance in cleaning plastics pipes
        D.1 Introduction
        D.2 Cleaning and unblocking
            D.2.1 Choosing the right equipment
            D.2.2 Comparing techniques
        D.3 Conclusions from independent jetting tests
            D.3.1 Assessing efficiency and impact
            D.3.2 Testing of plastic pipes
            D.3.3 Clearing tests
        D.4 Supplementary cleaning techniques
        D.5 Recommended practice principles for jetting
National Annex NA (informative) to BS EN 13476-1:2007
Additional guidance for UK users
Bibliography

Describes the definitions and general requirements for pipes, fittings and the system based on unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) structured-wall piping systems that are to be used for non-pressure underground drainage and sewerage systems.

This standard, together with EN 13476 2 and EN 13476 3, specifies the definitions and requirements for pipes, fittings and the system based on unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) structured-wall piping systems that are to be used for non-pressure underground drainage and sewerage systems. This standard is applicable to: a) structured-wall pipes and fittings, which are to be used buried in the ground outside a building structure only; reflected by the marking of products by “U??; b) structured-wall pipes and fittings, which are to be used buried in the ground both outside (application area code “U??) and within a building structure (application area code “D??); reflected in the marking of products by “UD??. In conjunction with EN 13476 2 and EN 13476 3 it is applicable to structured-wall pipes and fittings with or without an integral socket with elastomeric ring seal joints, as well as welded and fused joints. This part specifies general aspects and gives guidance concerning a national selection of requirement levels and classes where part 2 and part 3 of this standard provide options. EN 13476 2 and EN 13476 3 specify material characteristics, dimensions and tolerances, test methods, test parameters and requirements for pipes with smooth internal and external surfaces, Type A, and pipes with smooth internal and profiled external surfaces, Type B. This standard covers a range of pipe and fitting sizes, materials, pipe constructions, stiffness classes and tolerance classes and offers recommendations concerning colours. NOTE 1 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes. NOTE 2 Pipes, fittings and other components conforming to any plastic product standards referred to in clause 2 can be used with pipes and fittings conforming t