Design and Construction of Dernegül-Bakixanov-Karaçuxur Sewer Collector

5 km of DN 2500 inner diameter tunnel excavation using TBM, Construction of five vertical shafts, each with a DN 7500 inner diameter, totaling 147 meters, Installation of three DN 1400 MTBM microtunnels, totaling 1,653 meters (551 meters each)