Sewer with GRP Pressure Jacking Pipes in Groningen
The three other microtunneling sections were implemented with in this field unique CC-GRP pressure jacking pipes PN 6 and flush FWC couplings. These run beneath a gas pipeline, a main road, several streets and a navigable channel where the installation was conducted in 12 m depth. A 275 m long section with CC-GRP pressure jacking pipes of 1280 mm outer diameter was jacked in a curve radius of 1300 m. The contractor decided to install an intermediate station which according to safety standards is required for jacking with over 4000 kN. Due to the smooth and non-absorbing outer surface of HOBAS Pipes their light weight and constant outer diameter, the maximal jacking force did not exceed 1800 kN. The intermediate station was therefore never in operation. Thanks to innovative HOBAS CC-GRP Pipe Systems and the constant support of HOBAS Experts, all involved parties look back to a smooth and unobstructed implementation, Groningen is prepared for future needs and Mother Nature can breathe a sigh of relief.
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PROJECT DETAILS
Project ID: [12508] | |
Country: | Netherlands |
City: | Groningen |
Year: | 2006 |
Application: | Sewer |
Installation: | Microtunneling, Open Trench |
Technology: | Hobas |
Total Length: | 2400 m |
Nominal Diameter DN: | 1000 | 1500 mm |
Nominal Pressure PN: | 1 | 6 bar |
Nominal Stiffness SN: | 5000 | 320000 N/m2 |