Dick's HOS STL Galleria - Saint Louis, MO
REN designed and installed 50 drilled and grouted micropiles to support major structural improvements within and adjacent to an occupied retail facility.
Project Introduction
The Dick’s House of Sports project at the St. Louis Galleria required new foundations for a clear-span structural system, an elevator shaft serving the facility’s upper levels, interior climbing-wall elements, and signage. Because the work occurred within and adjacent to an occupied structure, settlement control, vibration limitation, access, and constructability were critical considerations throughout the project.
REN provided both foundation engineering and specialty construction services. The firm served as Engineer of Record for the micropile foundation system and prepared sealed Missouri PE calculations and drawings in accordance with the governing building code, FHWA micropile guidance, applicable ACI standards, and project requirements.
REN installed a total of 50 drilled and grouted micropiles across the project’s structural elements. The micropiles were designed for approximately 90 kips of axial load per pile and were socketed into limestone bedrock to provide reliable support and limit long-term settlement. Five of the micropiles were installed specifically to support the new elevator shaft.
Key Highlights
- Designed and installed 50 drilled and grouted micropiles
- Served as Engineer of Record for the complete micropile foundation system
- Prepared sealed Missouri PE drawings and structural calculations
- Designed the micropiles for approximately 90 kips of axial load per pile
- Socketed the micropiles into limestone bedrock for dependable foundation support
- Installed five dedicated micropiles to support the new elevator shaft
- Supported the clear-span structure, climbing wall, signage, and other interior improvements
- Completed the work within and adjacent to an occupied retail facility
- Addressed settlement, vibration, restricted access, and constructability requirements
- Selected a bedrock-supported micropile system to reduce long-term settlement risk
Conclusion
By combining Engineer-of-Record design services with specialty micropile installation, REN delivered a coordinated foundation solution for the Dick’s House of Sports improvements. The 50 completed micropiles provided bedrock-supported foundations for the project’s structural components while addressing the settlement-control, vibration, access, and construction challenges associated with working inside an occupied retail facility.
