• DFI Europe
  • DFI India
  • DFI Trust

Augered Cast-in-Place and Drilled Displacement Pile

This committee comprises a roster of industry-wide professionals involved in the design, understanding, advancement and use of augered cast-in-place (ACIP) and drilled displacement pile foundation systems.

Jon Huff

Committee Chair

Jonathan Huff, P.E.
[email protected]

Jon Huff is Vice President of Goettle in Cincinnati, Ohio.  He earned a Master’s Degree in Civil Engineering from the University of Kentucky and is a professional engineer.  In his leadership role at Goettle, he contributes to engineering design, estimating, project management, and relationship building for design-build projects involving augered cast-in place piles, micropiles, and anchored earth retention systems.  He is a former chairman of the Cincinnati Section of the ASCE Geotechnical Group and is an active member of PDCA and ADSC.  He chairs DFI’s ACIP and DD piles Committee and serves on the Board of Trustees for DFI’s Educational Trust.


Low Headroom ACIP Installation

Supplement to DFI ACIP Piles Manual

Stability of Large Diameter ACIP Piles

Evaluating lateral bracing code requirements for large diameter foundations

Ongoing Research

  • Lateral Stresses During DD Pile Installation – Monitoring installation of small-scale drilled displacement piles to assess radial effect and extent of lateral stresses and displacements
  • Evaluation of In Situ ACIP Pile Volume – Conducting thermal integrity profiling on ACIP test piles and analyze to assess in place diameter
  • Seismic Performance of Rigid Inclusions – numerical simulation study of rigid inclusions installed in liquefiable soils to show the effect of various design parameters and demonstrate how coupled use of typical site response and lateral loading analyses that practitioners perform on a daily basis can sufficiently capture the critical aspects of our research findings


DFI Augered Cast-in-Place Piles Manual, Third Edition – guidance for installation and quality assurance and control of ACIP Piles and a model specification.

DFI Guideline for Interpretation of Nondestructive Integrity Testing of Augered Cast-in-Place and Drilled Displacement Piles – practical guidance for the interpretation of nondestructive testing (NDT) of the integrity of augered cast-in-place (ACIP) and drilled displacement (DD) piles.

Augered Cast-In-Place Piles Inspector’s Guide, Second Edition, 2010 – summarizes the requirements expected of all parties concerned in the successful installation of ACIP piles.

FHWA Geotechnical Engineering Circular No. 8 Design and Construction of Continuous Flight Auger (CFA) Piles.

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).