Get the New FHWA Drilled Shaft Manual
Get the NCHRP Synthesis 418 – Pile Criteria From Test Pile Data
Dan’s Speaking Schedule March 16, 2012 - "Advanced" Design and Construction Issues with Drilled Shaft Foundations; Case Histories - ADSC Equipment EXPO and Technical Conference - San Antonio, Texas
March 26-28, 2012 - State of the Art and Practice for Drilled Foundations - GeoCongress 2012 - ASCE/Geo-Institute - San Francisco, California
Other DBA Team Speaking Appearences Tim Siegel (January 22, 2012): Innovative Techniques for Characterizing Karst Terrain, Workshop on Geo-innovation in Subsurface Exploration, TRB Annual Meeting, Washington, D.C.
John Turner and Robert Thompson (February 21-23, 2012): NHI Drilled Shaft Course - Kansas DOT, Topeka, Kansas
Robert Thompson (February 24, 2012): Conservatism in Drilled Shaft Design When
Utilizing Rock Sockets, Alabama Transportation Conference, Montgomery, Alabama
Tim Siegel (March 15, 2012): Micropile Design Installation and Performance for the Foothills Parkway, ADSC Equipment EXPO and Technical Conference, San Antonio, Texas
Robert Thompson (March 15, 2012): Full-Scale Load Tests on Drilled Shafts in Tennessee and Georgia, ADSC Equipment EXPO and Technical Conference, San Antonio, Texas
Erik Loehr (March 15, 2012): Slope Stabilization Using Micropiles, ADSC Equipment EXPO and Technical Conference, San Antonio, Texas
TBA (April 10-12, 2012): NHI Drilled Shaft Course - South Carolina DOT, Columbia, South Carolina
Conferences, Meetings, Seminars, Workshops
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ADSC SE Chapter Research Project – Test Shaft 1 Prediction Contest Winner Announced!
By Robert Thompson, on October 9th, 2008
The results are in for the load test at Test Shaft 1 at the Nashville site. The shaft was not loaded to failure in end bearing, in fact, it barely exceeded 1/2 inch of movement. Failure in side shear was not reached, either, but appeared to be approaching the maximum. Thus, for our contest, the maximum end bearing resistance was not evaluated. The average unit side shear in the socket was 24.2 ksf and the end bearing resistance mobilized at 1/2 inch deflection was a surprising 520 ksf!
So, our winner is………Matt Bullard, E.I. of the Nashville Branch of TTL, Inc. He predicted a unit side shear of 25 ksf and an end bearing of 552 ksf at 1/2 inch deflection. A detailed look at the results and the range of the predictions can be found here.
Technorati : Deep Foundations, Drilled Shafts, Engineering Research, Foundations, Geotechnical Engineering, Load Test, Test Shaft
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