Tucson, AZ - 2001
On January 30, 2001 a new world record for deep foundation load testing of 16875 tons (150.1 MN) was set by Loadtest, Inc. in Tucson Arizona at the I-10/I-19 Interchange project, exceeding Loadtest's 1997 world record by 2,000 tons (17.8 MN).
Osterberg Cell load testing was performed on an 8-ft.(2.5 m) diameter, 135.5 ft.(41.7 m) deep drilled shaft constructed by ADSC-members drilled by shaft contractors Case Foundation and Anderson Drilling. LOADTEST, Inc. utilized three 34-inch (850 mm) diameter Osterberg Cells installed on a single plane approximately 30 ft.(9.2 m) above the tip of the shaft.
The drilled shaft was drilled into a cemented sand and gravel layer, also consisting of various alternating layers of clay. The shaft was constructed dry. 52 strain gauges were positioned on the cage, with two levels of four gauges located below the O-cells and eleven levels located above. The Osterberg Cell test method was specified by the Arizona Department of Transportation with Engineering services provided by URS Greiner Woodward Clyde.
Project Profiles:
- Mississippi River Bridge - MS
- Augercast Piles (ACIP) & Osterberg Cells
- Centenario Bridge - Panama
- Cooper River Bridge - SC
- Triple-Level O-cell® Technology on the Missouri River, Amelia Earhart Memorial Bridge
Upcoming Conferences:
- 2006 Design-Build Expo
- Southeastern Transportation Geotechnical Engineering Conference
- International Winter Symposium & Expo