DS EN 13598-2:2009 Plastics Piping Systems For Non-Pressure Underground Drainage And Sewerage - Unplasticized Poly(Vinyl Chloride) (Pvc-U), Polypropylene (Pp) And Polyethylene (Pe) - Part 2: Specifications For Manholes And Inspection Chambers In Traffic Areas And Deep Underground Installations Provides the definitions and requirements for buried manholes and inspection chambers installed to a maximum depth of 6 m from ground level to the invert of the main chamber and manufactured from unpl