Steam Tunnel and Storm Water Improvement Shaft

University of Virginia

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Shaft Design and Construction Support Services:

Gall Zeidler Consultants (GZ) 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