Micropiles operate by penetrating through tough soils and cobbles using simultaneous percussion, rotary action, and grout injection. As the pile progresses, high-pressure grout is injected into the surrounding soil, forming irregularities that enhance bonding between the soil and the grout.

TerraFirma has pioneered innovative approaches in micropile applications, including the integration of brackets to lift structures after pile installation and unique push pile techniques. This method involves pre-drilling with a down-in-the-hole hammer, filling the hole with grout, and then driving push piles through the softened grout until refusal. This process ensures a solid soil interface, confirms end-bearing capacity, and achieves drive to refusal.

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