The Roberts Ramp Garage in Fargo, North Dakota, required deep foundation support for a five-story elevated parking structure. Challenging subsurface conditions, strict jobsite requirements for low noise and vibration, and the need for a high-capacity, cost-effective solution made PierTech’s Hercules™ Pile system the ideal choice.
To meet the structural demands of the project, PierTech supplied 10 ¾-inch diameter Hercules™ Piles with a proprietary tip engineered specifically for the region’s soil profile. Each pile utilized 18-inch and 32-inch helices, configured in groups of 3 to 6 piles per pier cap to distribute the load effectively.
The piles were driven to depths ranging from 100 to 120 feet, penetrating dense glacial till, with each pile designed for an ultimate capacity of 800 kips. To reach these depths, pile sections were field-welded in 20- to 25-foot lengths, maintaining structural integrity throughout installation.
The piles were installed using a CAT 349 excavator paired with a 230,000 ft-lbs PierTech drive head to generate the torque required for the dense soils. The Hercules™ system allowed the contractor to advance through the glacial till without the noise, vibration, or extensive excavation typical of driven or drilled foundations.
Static and dynamic load testing was performed to verify performance, with all piles meeting or exceeding the engineer’s capacity requirements.
PierTech’s Hercules™ Piles provided:
800-kip ultimate capacity per pile, verified through load testing.
Low noise and zero vibration, protecting adjacent properties and infrastructure.
Fast, efficient installation despite challenging soil and extreme depths.
A customized solution engineered for local conditions, ensuring long-term structural reliability.
For the Roberts Ramp Garage, traditional driven piles or drilled shafts would have resulted in significant noise, vibration, and cost, along with longer timelines. PierTech’s high-capacity helical solution allowed for rapid installation, verified performance, and minimal disruption—making it the optimal foundation system for this urban, sensitive project.
Need a deep foundation solution for a high-capacity, low-disturbance project?
Contact PierTech™ today to learn how our Hercules™ Pile System can deliver results for your next commercial or industrial build.
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