Micropiles are small diameter piles, typically 8" nominal, capable of being constructed in any ground condition or enviroment. Nevertheless, they are capable of supporting significant foundation loads. These foundation elements are constructed similar to drilled piles, except that the reinforcement is a single high capacity threadbar encapsulated in high strength grout. Often, a permanent casing is utilized in the upper portion of the micropile to provide additional lateral resistance. Typically, multiple micropiles are placed in a grid beneath the structure’s foundation. The tremendous surface area of the micro pile grid provides exceptional frictional adherence to the native soil, and is the source of this system’s strength.