rammed aggregate pier, geopier, stone column, rammed aggregate column, ground improvement


WGI offers products to help your project succeed.  Chief among them are Geopier® Rammed Aggregate Pier.



WGI offers ground improvement options to engineers, contractors and developers in California, Nevada, New Mexico and Arizona.

About Us


WGI is the regions leading design-build ground improvement contractor specializing in Geopier technologies.

Project Spotlight: 2nd and PCH - Long Beach, CA

2nd and PCH - Long Beach, California


Owner:                               CenterCal Properties, LLC

Geotechnical Engineer:     Twining, Inc.

Structural Engineer:           Ficcadenti Waggoner and Castle

General Contractor:           W.E. O'Neil Construction


The project consists of a 220,000 square foot multi-level mixed-used development providing retail, dining and parking while overlooking the Long Beach Marina and Alamitos Bay.  Subsurface conditions consist of compressible clay and liquefiable sand layers with groundwater at 10 feet.  Impact Geopier RAPs were used to reduce compressibility of the clay and to mitigate liquefaction settlement in the sandy soils.

Project Spotlight: Centerpointe - Irvine, CA
Centerpointe Apartments, rammed aggregate pier, geopier, rammed aggregate column, aggregate pier, stone column

Centerpointe Apartments and Parking Structure - Irvine, California


Owner:                               The Irvine Company

Geotechnical Engineer:     NMG Geotechnical

General Contractor:           Western National Group


The Centerpointe apartments in Irvine, CA include a 2 level podium parking structure with 4 levels of wood framed apartments above.  Soil conditions include interbedded layers of silty sand, clay and silt.  GP3 Geopier Rammed Aggregate Piers (RAP) were used to increase the allowable bearing capacity up to 6,000 psf while maintaining the total static settlement to less than 1 inch.