Professional Engineering Services
- Location Jacksonville, FL (Duval County)
- Owner Thomas Fancello – Private Residence
- Markets Residential, Geotechnical Engineering
- Services Geotechnical Exploration, Subsurface Investigation, Laboratory Testing, Foundation Recommendations
Project Description
NicNevol Engineering Services performed a geotechnical exploration for a proposed single-family residence at 226 River Hills Drive, along Pottsburg Creek in Jacksonville, FL. The study evaluated subsurface conditions and groundwater to provide shallow foundation and site-prep recommendations, including two SPT borings (45 ft and 30 ft) and laboratory testing. Subsurface soils consist of fine sands over silty sands, transitioning to very dense sands with silt/gravel at depth; groundwater was observed ~13.75–14 ft below grade.
NicNevol Responsibilities
- Conducting SPT borings (45 ft and 30 ft) with CME-55 rig and logging soils.
- Collecting and analyzing samples for classification and moisture/fines content.
- Evaluating groundwater depth and seasonal variation.
- Providing foundation and site preparation recommendations.
- Preparing compaction & structural fill guidelines for construction.
Project Highlights
- Subsurface profile: fine sands (0–15 ft), silty sands (15–30 ft), very dense sands with silt/gravel below 30 ft.
- Groundwater encountered ~13.75–14 ft below grade.
- Recommended shallow spread footings at ≥2 ft depth on compacted soils or structural fill.
- Design allowable bearing capacity ≈ 2,500 psf; compaction to 95% Modified Proctor.