• DFI Europe
  • DFI India
  • DFI Trust

Micropile

Committee Co-chair

Helen Robinson, P.E., PMP, D.GE
GEI Consultants, Inc.
hrobinson@geiconsultants.com
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.s.

Committee Co-chair

Pete Speier, P.E.
Williams Form Engineering Corp.
pspeier@williamsform.com
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.

Upcoming Events

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Additional Upcoming Events

  • Committee Meeting at ADSC Fall Meeting – October 25-27, 2021, Vail, CO
  • Committee meeting ADSC Annual Meeting – January 24-28, 2022, Big Island, HI
  • DFI MidYear Meetings – March 2022
  • Committee Meeting DFI SuperPile – June 15-17, 2022, St. Louis, Missouri
  • Committee Meeting ADSC Summer Meeting – July 18-21, 2022, Stowe, VT

Initiatives

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.

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

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.

Guide to Drafting a Micropile Specification

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

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.

Fundamentals

FHWA Micropile Design and Construction Reference Manual

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)