Modernization of Sewer Pipeline System in Ljubljana


Project ID: [00008611]
Country:Slovenia
City:Ljubljana
Year:2008
Application:Sewer
Installation:Open Trench
Technology:Hobas
Total Length [m]:3275
Nominal Diameter DN [mm]1200 | 2400
Nominal Pressure PN [bar]1
Nominal Stiffness SN [N/m2]10000

Due to the worldwide crisis, modernization and extension projects were taken step for step. The erection of a business center situated nearby the railway station was initiated first. The basement of the planned skyscraper lies 20 m beneath the ground providing room for three floors of parking lots. Since an old concrete sewer pipeline established in the 1950s ran right through the construction site, the engineers decided to construct a bypass that would run around the planned building in approximately 40 m distance. HOBAS Pipes DN 2200 and DN 2400, PN 1, SN 10000 as well as several bends were chosen for this purpose. Since the building site had already been excavated, the client attached great importance to the prompt delivery of the pipes. 36 m of pipes per day were delivered by truck. Their installation proceeded swiftly and trouble-free so that the whole line made up of 270 m could be completed within 23 working-days. Further 3 km of HOBAS CC-GRP SewerLine Pipes DN 1200, PN 1, SN 10000 were delivered to the south of Ljubljana, where a new waste water treatment plant was erected. The construction works for this pipe project that was implemented at the same time as the pipeline at the business center were completed within 9 months.


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