As part of a new combined sewer outfall (CSO) system in New York City, our team designed a drop shaft to reduce the wet weather effluent into nearby water bodies by nearly 90%. The project specified a 130-foot-deep drop shaft with a 50-foot inner diameter that is 3.2 miles connected to a 22-foot internal diameter tunnel. This design consisted of a post-tensioned roof structure, slurry wall support of excavation system (SOE), monolithic unreinforced concrete final lining, and bottom slab.
Student Team Members: Michaela Capano, Kevin Clarke, Julia Duffy, Matthew Woska
Adviser(s): Priscilla Fonseca and Ari Pérez Mejía
Clients: Delve Underground, Chris Dianora, Brian Lakin