• Storage / Environment / Sustainability
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Steam Tunnel and Storm Water Improvement Shaft

University of Virginia

Shaft Design and Construction Support Services:

Gall Zeidler Consultants provided an alternative shaft arrangement study, detailed design, specifications, structural design calculations, instrumentation, monitoring, and construction phase services for a shotcrete lined, 26 foot (8 meter) diameter shaft with underpinning of an existing steam tunnel. The shaft provided access for the removal of an 8 foot (2.4 meter) diameter soft ground Tunnel Boring Machine (TBM). Shaft excavation and support were based on New Austrian Tunneling Method (NATM) principles.

Location:

Charlottesville, Virginia

Date:

2002 – 2003

Structure:

TBM Receiving Shaft

Length:

24 feet (7.3 meters)

Cross-Section:

507 square feet (46 square meters)

Geology:

Fill, Fine to Coarse Silty Sand, Sand, and Mica Rock Fragments (Residual Soil)

Cost:

Approximately $8 Million

Client:

Bradshaw Construction Corporation

Owner:

University of Virginia