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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About Us

DBA staff members at Great Smoky Mountains National Park
from left to right: Robert Thompson, Dan Brown, Paul Axtell, Steve Dapp, Aaron Hudson, John Turner, Tim Siegel, and David Graham not pictured: Erik Loehr and Jon Gould
For a summary of who we are and what we do, click here: Dan Brown and Associates Summary. For information on our team members experience, publications, and professional activities, click on their names below.

Dan A. Brown, Ph.D., P.E., D.GE – President/Senior Principal Engineer

D. Michael Holloway, PH.D., P.E. – Senior Foundation Engineer

John S. Turner, Ph.D., P.E. – Senior Foundation Engineer

Paul J. Axtell, P.E. – Principal Engineer

Steven D.Dapp, Ph.D., P.E. – Principal Engineer

Timothy C. Siegel, P.E., D.GE – Principal Engineer

W. Robert Thompson, III, P.E., D.GE – Principal Engineer

Jon H. Gould, P.E. – Senior Project Engineer

David S. Graham, E.I. – Staff Project Engineer

Aaron B. Hudson, E.I. – Staff Project Engineer

J. Erik Loehr, Ph.D., P.E. (Affiliate)
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