UNYE-ORDU, PARTIAL SANITARY SEWER PROJECT
Construction of additional sanitary sewer system of the City of Unye, a major city on the cost of Black Sea. As a characteristic of Northern-Anatolian cities; Unye is formed on the skirts of high mountains.
Project consisted of two phases: First was the construction of the main collector line on the coastline of Black Sea. That required beach-sand excavation with very low shear resistance; problem was overcome by driving sheet piles. Second phase was the additional sewage system for the recently inhabited parts of the city. Moreover, two detention wells were constructed in order to store wastewater before sending to the treatment plant.
Project required kilometers of deep trench excavation (up to 7 meters). Heavy rains boosted this challenge by having a negative effect on the slope stability. mostly, sheet piles were driven before excavation. In some cases, trench wall supporting panels were installed after excavation in order to provide a safe working environment for the workers.
Technical Details
Detention wells, pumping stations, sanitary sewer network and main collector lines
- 44,000 m2 sheet pile
- 2 pump station
- 2 detention wells
- Control/Admin building
- 13,300 m2 trench wall supporting steel panels
- 21,000 m (200-400) concrete pipe
- 700 m SCRC pipe (1000-1200)
- Cast in-situ/pre-cast manholes
Client : Bank of Provinces
Final Completion : 1997
Project Value (2010 numbers) : 6.374.820,00 TL
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