Gall Zeidler Consultants provided a feasibility study, detailed design and specifications, structural calculations, and construction support services for the Atlanta Indian Creek Drainage Basin Project’s access and receiving shafts for Tunnel Boring Machines (TBMs) and hand-mined tunnel structures.
New Austrian Tunneling Method (NATM) Shaft in Varied Ground Conditions
88 feet (27 meters)
Oval-Shaped, 20 x 35 feet (6 x 11 meters)
Fill, Clay, Silty Sand, and Rock (Hornblende Biotite Quartz Gneiss)
Approximately $270 Million
Modern Continental Construction
City of Atlanta