Dan Brown and Associates, LLC

Specialists in Deep Foundation Design, Construction, and Testing and Slope Stability Problems

January 22nd, 2008

Welcome to newest DBA team member, Paul Axtell!

DBA is proud to announce the newest addition to the team - Paul J. Axtell, P.E.! Paul comes to us from the U.S. Army Corps of Engineers Kansas City District office. He received his B.S. in Civil Engineering from the University of Missouri-Columbia and his M.S in Civil Engineering from the University of Texas. Paul’s geotechnical engineering experience includes slope analysis, ground improvement, dam engineering ,and deep foundations. One of Paul’s first projects will be the kcICON project in Kansas City. Paul’s resume is now available on the About Us page of our site.

Welcome aboard, Paul!

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January 21st, 2008

Slope Stabilization Method with Micropiles - A report for the ADSC/DFI Joint Micropile Committee

Erik and Dan have published a final report entitled “A Method for Predicting Mobilization Resistance for Micropiles Used in Slope Stabilization Applications”. The report was prepared for the Joint ADSC/DFI Micropile Committee. This version has been submitted to the committee for review and comment. From the report:

The primary objective of the work described in this report has been to identify a method for predicting the resistance provided by micropiles used for slope stabilization that: (1) is consistent with the available field performance data, and (2) takes advantage of the improved knowledge gained from the performance observed in previous implementations. This objective has been met through review and analysis of case histories with well documented performance measurements, analysis of stability and load transfer for these case histories, development of an improved technique for predicting the resistance provided by micropiles, evaluation of the proposed technique as compared to available field performance measurements, and, finally, use of the technique to demonstrate its application for a hypothetical case and to demonstrate the implications of the technique for design of slope stabilization schemes with micropiles.

This report should be a great resource to practicing geotechnical engineers considering micropiles for slope stabilization.

Financial support for this work was provided by a grant from the H.B. Williams Industry Advancement Fund of ADSC: The International Association of Foundation Drilling.

A copy of the report can be downloaded here.


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January 21st, 2008

JJA Bridge in ENR.com article

An article entitled “Historic Cable-Stayed Link Taking Shape in Louisiana” about the construction of the John James Audubon (JJA) Bridge in Louisiana is on ENR.com here. The drilled shafts actually extend much deeper than indicated in the article, for what its worth. I think they were only talking about the permanent casing, not the entire drilled shaft.


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