Finding Common Ground®
DFI is an international association of contractors, engineers, manufacturers, suppliers, academics and owners in the geotechnical industry. Our multidisciplinary membership creates a consensus voice and a common vision for continual improvement in the planning, design and construction of deep foundations, ground improvement, excavations, and tunneling.
Upcoming Events
DFI organizes many types of events to provide opportunities for members and industry colleagues to network and exchange knowledge within the geotechnical realm. We also encourage our members to engage in the geotechnical community by submitting papers and presentation proposals to events, and by becoming a sponsor of DFI’s events to show members’ leadership and support in the industry.
September 9
Join DFI and the Educational Trust in Toronto, Canada, for the 2026 Manuel Fine Fundraising Dinner. Enjoy a cocktail reception, dinner, and live entertainment from Kent MacMillan and the Lost Rubies—all while supporting education!
Deep Foundations Magazine
DFI’s Deep Foundations magazine is published by the industry, for the industry. Our publication has one goal – to keep DFI members informed about the geotechnical industry that they themselves are shaping.
DFI Educational Trust
Formed in 2006, DFI’s Educational Trust supports and encourages individuals in the fields of studies related to the geotechnical industry by providing scholarships, grants, and opportunities to meet and work with geotechnical industry leaders.
DFI News
Check out the latest news releases from DFI to learn about upcoming events, featured projects, award winners, general institute announcements, and more.
DFI Podcasts
Welcome to Broadcasting Common Ground, DFI’s exclusive podcast channel. Our catalog of podcasts offers diverse perspectives on a variety of geotechnical topics. Within each series, our expert hosts speak with industry professionals on everything from career advice to technical deep dives.
DFI Journal
The DFI Journal is an international peer-reviewed publication supporting authors covering a broad range of geotechnical engineering and construction subjects. We take a particular interest in research and case studies related to systems designed and constructed for the support of heavy structures and excavations.
Communities Showcase
Communities are the backbone of DFI, providing the practical forum for finding common ground in the geotechnical industry. Technical Committees, Regional Chapters, Task Forces, Working Groups, User Groups, and Industry Alliances provide opportunities for all members to identify and address issues that impact geotechnical practices.
DFI Merchandise Store
DFI Merchandise is now available! Show your participation in the DFI community with cool apparel and accessories sporting the DFI logo. There are polo shirts, tee shirts, fleece jackets, sweatshirts, caps, beanies, backpacks, and more – available for men and women in the office or the field.
Committee Project Fund
DFI’s Committee Project Fund supports our committee projects—advancing the state of practice and understanding within our industry. Funding has financed projects proposed by 19 committees, involving significant in-kind contributions and joint funding with allied associations.
DFI Members
DFI has a diverse membership that encompasses all disciplines of the geotechnical industry, comprising of individuals and companies from across the globe. Our members enjoy a community of industry peers to share knowledge and ideas, while creating a common vision for the advancement of the geotechnical industry.
DFI Member Profile
July August
Tony Sangiuliano is the head of the foundations section within the Structures Office of the Ministry of Transportation of Ontario. He is also a Ph.D. candidate, a strong proponent…
Become a Member
Corporate / Student / Individual / More...
Join your peers in shaping the future of the geotechnical industry and enjoy the resources offered to our growing community. Memberships are available now for industry corporations, students, and individuals.
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