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Micro piles are relatively small diameter, usually 3 to 12 inch diameter, high capacity deep foundation elements. These drilled and grouted reinforced piles are 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 or enhancement.
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