Tampa, FL
The Project
The Challenge
The Solution
FREE INSPECTION REQUEST
Market: Commercial
Solution: Soil Stabilization & Foundation Repair
Services: AP600 One‑Part Polyurethane Injections (Excavation Assist)
A new wall was planned adjacent to the existing building. Introducing additional load without first addressing underlying soil conditions could have resulted in:
– Differential settlement between the old and new structures
– Structural cracking or joint separation
– Long-term maintenance liabilities
The site required precise targeting to ensure that only the affected zones were treated; misaligned injection patterns could impact nearby utilities or create unnecessary costs.
Healthcare facilities demand zero tolerance for structural risk. Any soil movement beneath load-bearing elements can compromise adjacent construction, utilities, and interior finishes. The hospital required a proactive foundation repair and soil stabilization solution that could be performed safely, cleanly, and efficiently without disrupting critical operations.
Cracks had already formed at the base of the building, indicating that the supporting soils had experienced movement over time. While prior construction efforts attempted to compact or treat the soil, the methods used decades ago lacked the precision and verification standards available today.
Performing soil stabilization and foundation repair at a major hospital requires:
Traditional excavation or underpinning would have been disruptive, time-consuming, and operationally challenging.
The subsurface conditions reflected dense but inconsistent soils likely influenced by historic construction activity. While some areas exhibited relatively compact material, others contained weak pockets that allowed settlement to occur over time.
In commercial structures of this age, soil variability is common due to: – Older compaction standards
– Construction staging and backfill variability
– Long-term vibration and loading cycles
These inconsistencies reduce uniform load distribution beneath foundations, leading to cracks and minor differential movement.
The appropriate solution required targeted soil stabilization and foundation repair, not surface-level cosmetic correction.
Helicon deployed AP600 one-part polyurethane chemical grout, specifically selected for excavation assist and structural soil stabilization in commercial settings.
AP600 is engineered to: – Penetrate weak soil zones
– Expand in a controlled manner
– Increase soil density and bearing capacity
– Provide rapid curing and immediate performance
– Minimize disruption to surrounding structures
Unlike traditional cementitious grouting, AP600 does not introduce excessive dead load and can be precisely controlled in confined spaces.
Injection Mapping
Before installation, Helicon carefully mapped injection locations to ensure accurate targeting of the affected wall zones. Each injection point was strategically placed to reinforce soil beneath the existing foundation while preparing the ground for new wall construction.
Total Injection Points: 68
A total of 68 injection points were installed to achieve uniform soil stabilization across the treatment area.
Controlled Injection Process
At each location: 1. Small-diameter injection ports were installed.
2. AP600 polyurethane was introduced under controlled pressure.
3. Expansion filled voids and densified loose soil pockets.
4. Soil bearing capacity increased as the material cured.
Technicians monitored material take and ground response in real time to ensure optimal densification without over-pressurization.
Enhanced Bearing Capacity
The treated soils now provide improved load distribution beneath the existing wall and future structural elements.
Differential Settlement Risk Mitigated
By strengthening weak soil zones, Helicon significantly reduced the likelihood of future movement between the existing building and the new wall.
Non-Invasive Execution
No large-scale excavation.
No demolition.
No structural downtime.
The hospital maintained operations throughout the stabilization process.
This soil stabilization and foundation repair solution ensures that both the current building and new construction are supported by reinforced subsurface conditions designed for longevity.
Helicon is Florida’s trusted leader in soil stabilization, foundation repair, helical pier installation, concrete lifting, and sinkhole remediation. We serve commercial and healthcare clients throughout Tampa Bay, providing engineered solutions that protect structures from the ground up.
If your commercial property in Tampa or Hillsborough County requires professional soil stabilization and foundation repair, Helicon delivers engineered polyurethane solutions designed for long-term performance.
Call 844-HELICON today to schedule a free inspection and consultation.
FREE INSPECTION REQUEST