Drilled Shaft
The Drilled Shaft Committee is dedicated to advancing the knowledge, practice, and application of drilled shaft foundations through collaboration among owners, designers, researchers and practitioners, and contributing to ongoing development of standards and innovations that support the effective use of drilled shafts as a reliable foundation solution for a wide range of applications.
Committee Chair
David Graham, P.E., BC.GE
Dan Brown and Associates PC
David Graham, P.E., BC.GE, is a senior engineer at Dan Brown and Associates with over 14 years in geotechnical engineering and construction. He has consulted on deep foundations for major U.S. bridges, including Mississippi River crossings and the Gordie Howe International Bridge. A licensed engineer in nine states, he has authored eight peer-reviewed papers and is active in ASCE and DFI. He holds civil engineering degrees from Auburn University.
Committee News & Events
Fundamentals
Our fundamentals lay the deep foundations for all our work.
- FHWA Geotechnical Engineering Circular No. 10 (FHWA-NHI-18-024) Drilled Shafts: Construction Procedures and LRFD Design Methods
- FHWA Evaluation and Guidance Development for Post-Grouted Drilled Shafts for Highways
- Final Report: Workshop on Quality Assurance for Post-Grouted Drilled Shafts
- Manual for Non Destructive Testing and Evaluation of Drilled Shafts (#TM-NDT-1)
- Drilled Shaft Inspector’s Manual (2nd edition) (#TM-DS-1)