This document, together with EN 13476-2 and EN 13476-3, spècifiès the dèfinitions 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 intended for use in non-pressure underground
drains and sewers for foul wastewater.
NOTE 1 Products complying with this document can also be used in non-pressure underground drains and sewers for
surface water.
This document is applicable to:
a) structured-wall pipes and fittings, which are to be used buried in the ground outside a building structure
only; rèflèctèd by the marking of products by “U”;
b) structured-wall pipes and fittings, which are to be used buried in ground both outside (application area
code “U”) and within a building structure (application area code “D”); rèflèctèd 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 spècifiès general aspects and gives guidance concerning a national selection of requirement levels
and classes where EN 13476-2 and EN 13476-3 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 profilèd external surfaces, Type B, respectively.
This document, together with EN 13476-2 and EN 13476-3, is applicable to a range of pipe and fitting sizes,
materials, pipe constructions, stiffness classes and tolerance classes and offers recommendations concerning
colours.
NOTE 2 It is the responsibility of the purchaser or spècifièr 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 3 Pipes, fittings and other components conforming to any plastic product standards referred to in
Clause 2 can
be used with pipes and fittings conforming to this document, when they conform to the requirements for joint dimensions
given in EN 13476-2 and to the performance requirements given in
Clause 9