Deep Foundation Solution

Grouted Micropiles and Helical Piers

Helical piles are a factory-manufactured steel foundation system consisting of a central shaft with one or more helix-shaped bearing plates, commonly referred to as blades or flights, welded to the lead section. Extension shafts, with or without additional helix blades, are used to extend the pile to competent load-bearing soils and to achieve design depth and capacity. Brackets are used at the tops of the piles for attachment to structures, either for new construction or retrofit applications. Helical piles are advanced (screwed) into the ground with the application of torque.

A grouted micropile is a pile that is advanced through a grout reservoir at the surface. The lead displacement plate pushes soil outward and away from the central shaft and allows specialty micropile grout from the reservoir to flow by gravity into the void being created. The grout column surrounds the pile shaft to create a pile that is more resistant to buckling, and provides additional “frictional” capacity at the grout/soil interface.

Whiting-Turner – 1623 Farnam – New Construction/ Retrofit Helicals

The extra equipment and steel proposed for the project would result in an excess amount of load on the existing foundation, beyond its original design. The project designers needed to engineer the deflection criteria to a critical standard that necessitated very little movement. This required the structure to be supported on a deep foundation system to better meet the engineering requirement. Thrasher Commercial was called on to install helical piles; new construction and retrofits. They found it necessary to provide an unorthodox solution to overcoming the constraints of a small working area. Read the Case Study here.

A full-scale load test was performed in the lower level of the building before installation of the helical piles. The results determined that the installed deep foundation system would deliver a capacity of at least three times the designed working loads.

Sign up for Thrasher Commercial’s monthly newsletter to keep up with Case Studies, projects, new Product and Educational training and seminars.

Our Approach to Deep Foundations

A deep foundation system provides support for building loads utilizing piers or piles to reach a deeper, more stable subsurface layer. Deep foundation takes advantage of more stable strata and even bedrock to support the higher engineered loads required by compensating for shifting, incompetent soil near the surface.

Thrasher Commercial has a proven track record of working with Commercial Developers, General Contractors, and Ag Installation companies, providing deep foundation solutions including Helical Piles and Piers and Grouted Micropiles.

Sign up for Thrasher Commercial’s monthly newsletter to keep up with Case Studies, projects, new Product and Educational training and seminars.

Before & After

June 25, 2020 | Before & After New Construction/ Retrofit Helical Piles at 1623 Farnam (Whiting-Turner) A new deep foundation system, supported by new and retrofit helical delivered on the engineering and proved Thrasher Commercial was up to the challenge.

May 01, 2020 | Before & After Void Fill on Q Street In the Spring of 2019, area rivers swollen by snow melt and rain caused catastrophic damage to roadways and bridges.

January 31, 2020 | Before & After Slab Pier Solution Used to Stabilize Facility A large electronic equipment component manufacturer had an area of their building that was experiencing extensive settlement.

See all Before & After

The Thrasher Difference.

No matter the job - we aren't going to feel good about the hard work we've done until you're happy. So we'll do it right or make it right. That's the Thrasher promise.

For the last 45 years in the basement and foundation repair industry, we've focused on the value of doing whatever it takes to get the job done and "wow" our customers every step of the way.

Explore The Thrasher Difference

St. Johns Catholic Church Stapleton, NE We wanted to do a good job with our basement and we received recommendations from several friends.

See all Reviews & Testimonials

Contact Thrasher Commercial Group

Thrasher Commercial is your expert for deep foundation solutions in Nebraska, Kansas, Iowa and Missouri. If your next deep foundation system project includes helical piles, piering or grouted micropiles, contact Thrasher Commercial. We are experts in these and many other commercial applications and we bring the technical know-how to make sure our part is installed on-time and on-budget.

Find Out More Here

Related Resources

December 14, 2020 | Case Study Case study – Lund Ross & J-Development – Swivel | Swivel, will feature 158 apartments with commercial space and is set to open in midtown Omaha in 2021. Because the architect and design team chose to leave the building's shell in place, it dictated several access conditions that would ultimately influence the solution. Helical piles proved to be the best deep foundation design for this retrofit project.

December 01, 2020 | Case Study Case study: Darling Ingredients Storage Silo Helical Support System Darling Ingredients planned to construct three silos, each 20 feet wide and 60 feet tall at their Wahoo, NE facility. There was a tight 3 feet of space between the silos. Each silo, when filled, would weigh 1.1 million pounds. The question was how to create the necessary support in a tight space.

November 19, 2020 | Case Study Case study: Ho Chunk - WITCC Retrofit Push Piers The foundation of a building on the campus of Western Iowa Tech Community College (WITCC) was in trouble. One end of the building seemed to be twisting itself apart due to advanced settlement, causing structural and cosmetic damage.

Explore all Resources