scope:

This part of the standard specifies the recommended practice for installation of polypropylene (PP) piping systems in the field of soil and waste discharge (low and high temperature) inside buildings (marked with "B") and for soil and waste discharge systems for both inside buildings and buried in ground within the building structure (marked with "BD"). It is applicable to pipes and fittings, which are marked with "B", intended to be used above ground only and to pipes and fittings marked with "BD", intended to be used above and buried in ground within the building structure.