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., is a senior engineer with Dan Brown and Associates in Chattanooga, Tennessee. He has over 14 years of experience in the geotechnical engineering and construction industry. He has consulted on deep foundation design, load testing and construction for many major bridges throughout the U.S., including several Mississippi River crossings and the Gordie Howe International Bridge currently under construction between Detroit, Michigan, and Windsor, Ontario.
Graham is a licensed professional engineer in nine states and the District of Columbia. He is the lead author of eight peer-reviewed technical papers. An active member of ASCE and DFI, Graham holds B.S. and M.S. degrees in civil engineering 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)