Geotechnical Exploration & Foundation Evaluation
- Location Jacksonville, FL (Duval County)
- Owner Private Acreage Lot Development
- Markets Residential, Geotechnical Engineering
- Services Geotechnical Exploration, Subsurface Investigation, Laboratory Testing, Foundation & Earthwork Recommendations
Project Description
NicNevol Engineering Services performed a geotechnical exploration and evaluation for a private development lot located at 1666 Lane Ave. in Jacksonville, FL. The purpose of the study was to assess foundation soils, groundwater conditions, and surface water control measures to support future development and stormwater detention pond design.
The field program included one (1) Standard Penetration Test (SPT) boring advanced to 15 ft and one infiltration test. Subsurface conditions consisted of sandy topsoil with organics underlain by silty sands, a thin clayey sand layer, and soft limestone at approximately 14 ft. Groundwater was encountered at 2.25–2.5 ft below ground surface, with estimated seasonal high levels near 1.75–2 ft.
Laboratory testing included soil classification, moisture content, and permeability. Engineering recommendations were developed for clearing and grubbing, site compaction, structural fill selection, and groundwater control during construction to ensure stability and long-term performance.
NicNevol Responsibilities
- Conducting subsurface exploration with one SPT boring (15 ft) and infiltration test.
- Performing laboratory soil classification and permeability testing.
- Evaluating groundwater and infiltration characteristics.
- Developing recommendations for site preparation, compaction, and structural fill.
- Providing guidelines for groundwater drawdown and site grading.
- Delivering final geotechnical report with design parameters and recommendations.
Project Highlights
- 1 SPT boring (15 ft) + 1 infiltration test performed.
- Subsurface: sandy topsoil, silty sands, thin clayey sand, limestone at ~14 ft.
- Groundwater encountered at 2.25–2.5 ft (seasonal high ≈1.75–2 ft).
- Infiltration rate: 0.8 ft/day.
- Recommendations: 95% Modified Proctor compaction, use of select structural fill, and groundwater drawdown during construction.