Micropiles, like so many innovations, were created out of necessity. After World War II, there was a great need to reinforce the foundations of structures that were severely damaged and unsafe. Today, the technique is used extensively for foundational repairs, as well as in new construction projects. The following guide answers some commonly asked questions about the micropiling process.

A Brief Guide to Micropiling

What is micropiling used for?

Micropiles are long cylinders made from steel or another strong material and are filled with cement or another substance. These columns are pushed into the ground to transfer loads of weight into deeper levels of soil, acting as additional support for a structure.

Micropiles are commonly used to underpin foundations that are cracked or otherwise vulnerable. The technique lowers the footing of an existing foundation so it sits on more supportive soil. The piles distribute and support weight more evenly and effectively than shallower foundations, helping to repair or strengthen the base of the structure. Micropiles are also useful in new construction settings when the surrounding soil is already taxed by nearby buildings.

How does it work?

A hole is drilled in the ground, and a casing is placed into it and stabilized by a clay slurry. A reinforcement cage made from rebar is added on top, and a cement-based grout is applied as support for the foundation.

What are the benefits?

Micropiling can hold up against various soil conditions, so it’s a versatile and highly stable technique. This type of foundation also holds up well in an earthquake. It’s able to be installed through obstructions, on inclines, and in tight spaces. The process is relatively fast and quiet compared to other methods, which makes it ideal for a quick turnaround in residential areas.

When is it used?

Since micropiling has been found to hold up well during seismic events, it’s often used in areas where earthquakes are common, whether in new construction or as a retrofitting solution. This foundation option makes structures more secure in places with rocky soil, as well. In neighborhoods and other areas where buildings are close together, micropiles are often used since many other methods can’t be squeezed in.

If you need a micropile foundation installed, reach out to The Dwyer Company in West Chester, OH. They also serve clients throughout Lexington and Louisville, KY, offering many solutions for stabilizing soil, repairing foundations, and lifting concrete. They're dedicated to ensuring you understand everything about the process, so they’re happy to answer any questions you may have. Visit them online to learn more about their services, and call (513) 777-0998 to schedule a free estimate.