Micropiles are high-capacity deep foundation piles, typically between 5 and 12 inches in diameter, are generally comprised of high-strength steel casing, rebar, and grout. They can extend to depths of 200 feet, and achieve workloads of over 200 tons. Micropiles are used to transfer structural load through unsuitable soils. Thus, micropiles are a solution when Helical Piles or other deep foundation methods may not work.
The main advantage to using micropiles is that they can be installed with large or small drilling equipment. This low access drill is Shore’s specialty, and makes micropiles the ideal solution for low overhead conditions, such as inside buildings.
A standard piling solution could prove difficult in a limited access area – depending on the plan, a facility’s operations can be disrupted or outright halted during installation. Micropile work can often be done without interrupting or halting daily operations.
Some sites may have more challenging requirements involving installation. Micropiles are good for environments where minimal vibration is required. It’s an ideal choice for urban environments. Also, due to their flexibility in size, range, and drilling methods, they can be used in ground conditions that could be considered more difficult for other deep foundations. For example, micropiles are a good option in areas with either natural or man-made obstructions. They can also be used on a site with sensitive ground or structures nearby that would be adversely affected by hammer or vibration driven piles.
Micropiles are primarily used for:
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