Indian Creek Drainage Basin Shafts

City of Atlanta

Drainage Basin Tunnel Feasibility Study, Structural Design, and Construction Support Services:

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.

Excavation in soil underneath a cast-in-place concrete shaft collar to be followed by shotcrete for initial support reinforced by lattice girders

Excavation in soil underneath a cast-in-place concrete shaft collar to be followed by shotcrete for initial support reinforced by lattice girders

Excavation in soil underneath a cast-in-place concrete shaft collar to be followed by shotcrete for initial support reinforced by lattice girders (different angle)

Excavation in soil underneath a cast-in-place concrete shaft collar to be followed by shotcrete for initial support reinforced by lattice girders (different angle)

Excavation in soil underneath cast-in-place shaft collar

Excavation in soil underneath cast-in-place shaft collar

Excavation and support sequence for NATM shaft construction

Excavation and support sequence for NATM shaft construction

Download PDF
Location:

Atlanta, Georgia

Date:

2002

Structure:

New Austrian Tunneling Method (NATM) Shaft in Varied Ground Conditions

Length:

88 feet (27 meters)

Cross-Section:

Oval-Shaped, 20 x 35 feet (6 x 11 meters)

Geology:

Fill, Clay, Silty Sand, and Rock (Hornblende Biotite Quartz Gneiss)

Cost:

Approximately $270 Million

Client:

Modern Continental Construction

Owner:

City of Atlanta

Website: See Think Do

© Copyright 2024 Gall Zeidler Consultants