Category Archives: DBA News

ADSC Drilled Shaft Design and Construction Short Course- March 22-23, 2006 – Philadelphia, PA.

Dr .Dan Brown, P.E. and Dr. Bill Isenhower, P.E. of ENSOFT, Inc. will be conducting a two-day short course on Drilled Shaft Design, Construction and Testing. The course is the second in a series produced by ADSC and ENSOFT, Inc. The program will cover drilled shaft design, specifications, QA and QC testing, and recommended construction procedures. This course is modeled on the highly successful NHI course that has been provided to state DOTs and is based on the FHWA Drilled Shaft Design and Construction Manual developed by Dr. Michael O’Neill. The course is being sponsored by the ADSC’s Mid-Atlantic Chapter. Registration information can be found at

Presentations at the PDCA 10th Annual Conference

PDCA_RGBcolor_small.jpgDr. Dan Brown and Dr. Steve Dapp will be presenting at the PDCA 10th Anniversary Annual Conference at the Hilton Palacio Del Rio in San Antonio, Texas March 2 – 4, 2006.

Dan will be presenting “Pile Set Up in Foundation Design” on Friday the 3rd. Dan’s presentation will provide an overview of the fundamental mechanisms affecting the time-dependency of axial resistance in driven piles, and the effect of this phenomenon on design, quality control, and testing of driven pile foundations. Examples from the ongoing Escambia Bay Bridge project will be described, in which setup has been seen to vary considerably based on soil conditions. Dan will also be a panelist in a roundtable discussion “Comparing Driven Pile Capacities With Drilled Shaft Capacities” to be held later that afternoon.

On Saturday the 4th, Steve will present “Static and Axial Capacity Between Drilled and Driven Piles”. Steve’s presentation will provide an overview of the effect of construction on deep foundation behavior and factors that affect performance. Issues of construction quality assurance and control, along with advantages and limitations of each foundation type will also be discussed.

Final Draft of FHWA GEC No. 8 is in for review!

DBA has recently submitted the final draft of FHWA Geotechnical Circular No. 8 – Augered Cast-In-Place and Continuous Flight Auger Piles. The document is under final review by FHWA and should be released for publication late this year. This manual will provide the technical information for the selection, design, construction, and inspection of drilled piles (auger-cast, continuous flight auger, drilled displacement piles, etc.) for the transportation industry. A model performance-based specification is included in the manual. We’ll post information on the release date and how to obtain copies once it goes to publication.