Hagen, Germany

摘要

A 280m-long sewer made of 225mm OD HDPE (PE80) was to be installed at a down grade of 1.88% at a construction development at Ergster Weg West in Hagen, Germany. The project developer had predicted ground conditions of mixed soil with mudstone (up to 35MPa), and with a slight possibility of sandstone layers (up to 10OMPa). Owner Wirtschaftsbetrieb Hagen, contractor Ferdinand Altbrod, first subcontractor Herbert Spiekermann Bohrtechnik und Spezialtiefbau, and second subcontractor Weitz & Co decided to implement the project using Bohrtec auger-boring equipment.