Ground Improvement Committee

Timothy C. Siegel, P.E., G.E., D.GE, Chair
The Ground Improvement Committee addresses technologies for foundation improvement and liquefaction mitigation. The technologies include but are not limited to vibratory stone columns, vibrocompaction, vibro concrete columns, aggregate piers, dynamic compaction, wick drains and grouted inclusions.
Recent News
11/7/2019 Tim Siegel, P.E., G.E., D.GE, of Dan Brown and Associates (DBA), is the new chair of the Ground Improvement Committee succeeding Tanner Blackburn, P.E., Ph.D., of Hayward Baker. Click to read the news release.
5/8/2017 Please submit your abstract for the DFI Ground Improvement Committee Speaker Database by clicking here
3/13/2017 Please view the committee’s Guidance for Drafting a Ground Improvement Specification (March-April 2016).
3/30/2015 The DFI Ground Improvement Committee prepared a review of the selection, design, and specification of liquefaction mitigation methods. The Committee report is presented in the August 2013 DFI Journal (Volume 7, Issue 1).  
4/18/2014 The committee's wick drain guide specification is now available! It covers materials, installation and quality control and assurance for wick drain projects. It is available as an editable MS Word document to be tailored to specific project needs.
Related Publications: