Micropiles are small diameter (5 inch to 12 inch) piles that can be installed in almost any type of ground where piles are required, with design loads as small as three tons and as high as 500 tons. They are termed “piles” because they involve driving a small diameter tube and forcing grout or concrete into it, as with large drilled piles.

Also known as minipiles, pin piles, needle piles or root piles, micropiles offer alternatives to conventional piling techniques, particularly in restricted access or low headroom situations.  They involve increasing degrees of soil compaction where the soil is too weak to carry the loads of a convention press pile.

Micro piles are drilled and grouted reinforced piles typically used for structural support where conventional deep foundation elements cannot be installed due to project constraints such as limited work space or where heavy machinery cannot be used.

Micropile installation causes minimal disturbance to structures, soil and the environment. Installation equipment usually consists of self-contained drill units, similar to those used for tieback anchor installation. Micro piles can be used in soil or bedrock. They can be installed for new construction or for existing foundation remediation.

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