Water/Wastewater Design-Build Main Pumping Station Diversions, Division I > Projects > Design-Build Main Pumping Station Diversions, Division I KEY CHALLENGES & PROJECT DETAILS Project provides control and consolidation of flow coming from Combined Sewer Overflow (CSO) Structures: New Jersey Avenue Arch Combined Sewer 鈥� 18-ft. wide and 20-ft. high in section (CSO 009/011A), Tiber Creek Arch Combined Sewer (CSO 012), Canal Street Sewer (CSO 013), and Tingey Street Sewer (CSO 014). Two reinforced concrete hydraulic diversion structures constructed around CSO 009/011A and CSO 012: 60-ft. x 70-ft., 30-ft. deep for CSO 009/011A and 60-ft. x 50-ft., 25-ft. deep for CSO 012. Existing structures were demolished within the interior of the new structures. Both diversion structures exit into a reinforced concrete surge tank 50-ft. x 80-ft., 40-ft. deep. A cast-in-place concrete box approach channel carries the exiting flow from CSO 012 into a junction chamber and then into the Surge Tank. Extension of 72-in. Tiber Creek Sewer for 172-ft. from the terminus of Division 鈥楤鈥� project on the west side of this project to the junction chamber above. Part of the sewer extension passes beneath the Tiber Creek Sewer (CSI 012) and required 96-in. hand mined tunnel construction. A combined reinforced concrete below-ground and masonry above-ground odor control structure. Within the 110-ft. deep tunnel drop shaft, the following items of construction were completed: the base swirl facility, the interconnecting walls and channels from the surge tank and odor control facility, as well as 2-ft. thick 56 ft. diameter cast-in-place concrete suspended roof PROJECT DETAILS: Project Owner: DC Water Location: Washington, DC Close
KEY CHALLENGES & PROJECT DETAILS Project provides control and consolidation of flow coming from Combined Sewer Overflow (CSO) Structures: New Jersey Avenue Arch Combined Sewer 鈥� 18-ft. wide and 20-ft. high in section (CSO 009/011A), Tiber Creek Arch Combined Sewer (CSO 012), Canal Street Sewer (CSO 013), and Tingey Street Sewer (CSO 014). Two reinforced concrete hydraulic diversion structures constructed around CSO 009/011A and CSO 012: 60-ft. x 70-ft., 30-ft. deep for CSO 009/011A and 60-ft. x 50-ft., 25-ft. deep for CSO 012. Existing structures were demolished within the interior of the new structures. Both diversion structures exit into a reinforced concrete surge tank 50-ft. x 80-ft., 40-ft. deep. A cast-in-place concrete box approach channel carries the exiting flow from CSO 012 into a junction chamber and then into the Surge Tank. Extension of 72-in. Tiber Creek Sewer for 172-ft. from the terminus of Division 鈥楤鈥� project on the west side of this project to the junction chamber above. Part of the sewer extension passes beneath the Tiber Creek Sewer (CSI 012) and required 96-in. hand mined tunnel construction. A combined reinforced concrete below-ground and masonry above-ground odor control structure. Within the 110-ft. deep tunnel drop shaft, the following items of construction were completed: the base swirl facility, the interconnecting walls and channels from the surge tank and odor control facility, as well as 2-ft. thick 56 ft. diameter cast-in-place concrete suspended roof PROJECT DETAILS: Project Owner: DC Water Location: Washington, DC Close