Wastewater Pipes Protect Veio Regional Natural Park from Pollution
The first part of the installation consisted of an open trench and a trenchless section. A total of 1,200 m DN 1400, 1800 and 2000, SN 10000 was laid in open trench and 1,320 m De 2047, SN 32000 CC-GRP Jacking Pipes were installed by microtunneling. This latter trenchless section was constructed in two drives of 520 m and 790 m respectively. Thanks to the six-meter-long jacking pipes, the installation progressed very efficiently at an installation rate of 9 pipes per day and could be finalized within 145 days only. Particular attention was paid to the quality of the inspection manholes of the collector and the inlets: Traditional GRP manholes were utilized for the pipeline laid in open trench whereas manholes equipped with a saddle piece were chosen for the jacking pipes. Both ensure a tight and durable pipe system.