In FHWA-RD-96-016 “Micropiles are small diameter drilled and grouted reinforced piles used for both structural support and in situ earth reinforcement.” Typically less than 12” in diameter, design capacities frequently exceed 100 kips. Some of our installations have been successfully tested to over 300 kips or over 150 tons. Micropiles are frequently used where a deep foundation system is required in difficult substrata conditions, or where driven piles or large diameter systems are impractical due to subsurface obstructions, or limitations presented by existing buildings at or adjacent to the project site.
