Selected papers from the International Foundations Congress and Equipment Expo 2021, held in Dallas, Texas, May 10-14, 2021. Sponsored by the International Association of Foundation Drilling (ADSC), the Deep Foundations Institute (DFI), the Pile Driving Contractors Association (PDCA), and the Geo-Institute of ASCE.

This Geotechnical Special Publication contains 53 peer-reviewed papers on seepage control, ground improvement, and earth retention.

Topics include: deflections in earth retention structures; mechanically stabilized earth; tall walls; Texas and soft soils; advances in ground improvement materials; ground compaction; bio and bioinspired ground improvement; slurry walls; ground densification; and ground improvement for seismic and static reinforcement.

GSP 324 will be of interest to engineering practitioners, researchers, geotechnologists, contractors, and equipment manufacturers and suppliers in the deep foundation industry.