Minipiles are a deep foundation element constructed using high-strength, small-diameter steel casing and/or threaded bars.
Compaction grouting involves the injection of a low slump, mortar grout to densify loose, granular soils and stabilise subsurface voids or sinkholes.
Driven precast piles are installed using impact or vibration hammers to a design depth or resistance.
This technique involves construction of concrete columns with a bottom-feed depth vibrator to transfer loads through weak strata to a firm underlying stratum.