The Geopier GP3® system uses replacement Rammed Aggregate Pier® (RAP) elements
to reinforce good to poor soils, including soft to stiff clay and silt, loose
to dense sand, organic silt and peat, and variable, uncontrolled fill. The RAP elements are constructed by applying direct vertical ramming energy to densely compact successive lifts of high quality crushed rock to form high stiffness engineered elements. The vertical ramming results in high density and high strength RAP elements providing superior support capacity, increased bearing pressure up to 10,000 psf and excellent settlement control.
The GP3 system allows for visible inspection of the spoils, and the opportunity to
address changing ground conditions as they happen. It is an effective replacement for massive over-excavation and replacement or deep foundations,
including driven piles, drilled shafts or auger cast-in-place piles.