• DFI India
  • DFI Trust


A committee of industry-wide professionals involved in the support, understanding and application of micropile foundation technology. The committee operates jointly with the ADSC Micropile Committee visiting the state of practice regularly through seminars and global workshops and has an international arm, the International Society for Micropiles (ISM), to further technology transfer across the globe.

Committee Co-chair

Helen Robinson, P.E., PMP, D.GE
GEI Consultants, Inc.

Helen Robinson, P.E., PMP, D.GE is a Senior Project Manager and Branch Manager at GEI Consultants in Exton, PA. She earned B.S. and M.S. degrees in Civil Engineering from Penn State University and has over 18 years of experience providing design, analysis, and construction management services for geotechnical and geostructural projects.  Helen currently serves as Secretary and Trustee for the DFI Educational Trust and on the Board of Directors for Geo-Institute.  She was named Engineer of the Year for the Society for Professional Engineers and ENR National Top 20 Under 40 in 2019.

Committee Co-chair

Pete Speier, P.E.
Williams Form Engineering Corp.

Pete Speier joined Williams Form Engineering Corp in 2012 as their Western US Applications Engineer and was promoted to Vice President of Engineering in 2018. Pete is based in San Diego and has extensive experience in the design and construction of deep foundations and anchored earth retention systems.  Previously, Pete spent over 15 years as a project manager with Condon-Johnson and Malcolm Drilling.  Pete is a graduate of San Diego State University with a Bachelor of Science in Civil Engineering, is a P.E. in California, Texas, and Washington. Pete is actively involved in ADSC, DFI, ASTM, and PTI.


Hollow Bar Task Force

Jointly with ADSC-DFI Micropile Committee to define the state-of-practice for hollow bar elements and seek acceptance for use in highway projects.

Coming soon.

Flow rate on bond stresses

Jointly with ADSC-DFI Anchored Earth Retention Committee – field test study aimed at understanding the effect of flow rate on bond dress in hollow bar elements.

Coming soon.

Specific Gravity and Unconfined Compressive Strength Study

Study correlating measured specific gravity of freshly mixed micropile grout to the tested compressive strength of cured grout samples.

Coming soon.

Guide to Drafting a Micropile Specification

Update to DFI guide including hollow bar considerations and other advancements.

Coming soon.

FHWA Bridging Document

Compilation of advancements to be proposed to FHWA for inclusion in the next version of FHWA’s Micropile Design and Construction manual.

Coming soon.


FHWA Micropile Design and Construction Reference Manual – Practitioner-oriented information on the geotechnical and structural design of micropiles for foundation support and slope stabilization, including inspection and load testing procedures, cost data, and contracting methods

GeoConstructability – An Owner’s Guide to Obtaining Essential Geotechnical Information for Construction (documents the type of geotechnical information  that contractors need to estimate, plan and execute foundation projects)