Advancing the state of the practice or state of the art in design, construction, and quality verification of drilled shaft foundation systems.
David Graham, P.E.
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.
DFI Committee Project Fund committee research projects
- Best Practices for Bored Pile/Drilled Shaft Design and Construction – International technical working group in North America and Europe defined best practices for design, construction, contracting, QC/QA and innovations. DFI Journal, Volume 10, Issue 2, December 2016.
- Literature review and development of online database of previous large scale pile experiments.
Shear Amplification in Rock Sockets Study – investigate shear amplification at soil-rock interface in rock socketed drilled shafts.
Tremie concrete pour simulation for 52 ft deep drilled shaft.
Colors represents the age of concrete. Stages simulate the lifted tremie pipe.
The oldest concrete is pushed to the top of shaft.
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)